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wine/dlls/user32/edit.c

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/*
* Edit control
*
* Copyright David W. Metcalfe, 1994
* Copyright William Magro, 1995, 1996
* Copyright Frans van Dorsselaer, 1996, 1997
*
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*
* NOTES
*
* This code was audited for completeness against the documented features
* of Comctl32.dll version 6.0 on Oct. 8, 2004, by Dimitrie O. Paun.
*
* Unless otherwise noted, we believe this code to be complete, as per
* the specification mentioned above.
* If you discover missing features, or bugs, please note them below.
*
* TODO:
* - EDITBALLOONTIP structure
* - EM_GETCUEBANNER/Edit_GetCueBannerText
* - EM_HIDEBALLOONTIP/Edit_HideBalloonTip
* - EM_SETCUEBANNER/Edit_SetCueBannerText
* - EM_SHOWBALLOONTIP/Edit_ShowBalloonTip
* - EM_GETIMESTATUS, EM_SETIMESTATUS
* - EN_ALIGN_LTR_EC
* - EN_ALIGN_RTL_EC
* - ES_OEMCONVERT
*
*/
#include "config.h"
#include <stdarg.h>
#include <string.h>
#include <stdlib.h>
#include "windef.h"
#include "winbase.h"
#include "winnt.h"
#include "wownt32.h"
#include "win.h"
#include "imm.h"
#include "wine/winbase16.h"
#include "wine/winuser16.h"
#include "wine/unicode.h"
#include "controls.h"
#include "user_private.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(edit);
WINE_DECLARE_DEBUG_CHANNEL(combo);
WINE_DECLARE_DEBUG_CHANNEL(relay);
#define BUFLIMIT_INITIAL 30000 /* initial buffer size */
#define GROWLENGTH 32 /* buffers granularity in bytes: must be power of 2 */
#define ROUND_TO_GROW(size) (((size) + (GROWLENGTH - 1)) & ~(GROWLENGTH - 1))
#define HSCROLL_FRACTION 3 /* scroll window by 1/3 width */
/*
* extra flags for EDITSTATE.flags field
*/
#define EF_MODIFIED 0x0001 /* text has been modified */
#define EF_FOCUSED 0x0002 /* we have input focus */
#define EF_UPDATE 0x0004 /* notify parent of changed state */
#define EF_VSCROLL_TRACK 0x0008 /* don't SetScrollPos() since we are tracking the thumb */
#define EF_HSCROLL_TRACK 0x0010 /* don't SetScrollPos() since we are tracking the thumb */
#define EF_AFTER_WRAP 0x0080 /* the caret is displayed after the last character of a
wrapped line, instead of in front of the next character */
#define EF_USE_SOFTBRK 0x0100 /* Enable soft breaks in text. */
#define EF_APP_HAS_HANDLE 0x0200 /* Set when an app sends EM_[G|S]ETHANDLE. We are in sole control of
the text buffer if this is clear. */
typedef enum
{
END_0 = 0, /* line ends with terminating '\0' character */
END_WRAP, /* line is wrapped */
END_HARD, /* line ends with a hard return '\r\n' */
END_SOFT, /* line ends with a soft return '\r\r\n' */
END_RICH /* line ends with a single '\n' */
} LINE_END;
typedef struct tagLINEDEF {
INT length; /* bruto length of a line in bytes */
INT net_length; /* netto length of a line in visible characters */
LINE_END ending;
INT width; /* width of the line in pixels */
INT index; /* line index into the buffer */
struct tagLINEDEF *next;
} LINEDEF;
typedef struct
{
BOOL is_unicode; /* how the control was created */
LPWSTR text; /* the actual contents of the control */
UINT text_length; /* cached length of text buffer (in WCHARs) - use get_text_length() to retrieve */
UINT buffer_size; /* the size of the buffer in characters */
UINT buffer_limit; /* the maximum size to which the buffer may grow in characters */
HFONT font; /* NULL means standard system font */
INT x_offset; /* scroll offset for multi lines this is in pixels
for single lines it's in characters */
INT line_height; /* height of a screen line in pixels */
INT char_width; /* average character width in pixels */
DWORD style; /* sane version of wnd->dwStyle */
WORD flags; /* flags that are not in es->style or wnd->flags (EF_XXX) */
INT undo_insert_count; /* number of characters inserted in sequence */
UINT undo_position; /* character index of the insertion and deletion */
LPWSTR undo_text; /* deleted text */
UINT undo_buffer_size; /* size of the deleted text buffer */
INT selection_start; /* == selection_end if no selection */
INT selection_end; /* == current caret position */
WCHAR password_char; /* == 0 if no password char, and for multi line controls */
INT left_margin; /* in pixels */
INT right_margin; /* in pixels */
RECT format_rect;
INT text_width; /* width of the widest line in pixels for multi line controls
and just line width for single line controls */
INT region_posx; /* Position of cursor relative to region: */
INT region_posy; /* -1: to left, 0: within, 1: to right */
EDITWORDBREAKPROC16 word_break_proc16;
void *word_break_proc; /* 32-bit word break proc: ANSI or Unicode */
INT line_count; /* number of lines */
INT y_offset; /* scroll offset in number of lines */
BOOL bCaptureState; /* flag indicating whether mouse was captured */
BOOL bEnableState; /* flag keeping the enable state */
HWND hwndSelf; /* the our window handle */
HWND hwndParent; /* Handle of parent for sending EN_* messages.
Even if parent will change, EN_* messages
should be sent to the first parent. */
HWND hwndListBox; /* handle of ComboBox's listbox or NULL */
/*
* only for multi line controls
*/
INT lock_count; /* amount of re-entries in the EditWndProc */
INT tabs_count;
LPINT tabs;
LINEDEF *first_line_def; /* linked list of (soft) linebreaks */
HLOCAL hloc32W; /* our unicode local memory block */
HLOCAL16 hloc16; /* alias for 16-bit control receiving EM_GETHANDLE16
or EM_SETHANDLE16 */
HLOCAL hloc32A; /* alias for ANSI control receiving EM_GETHANDLE
or EM_SETHANDLE */
/*
* IME Data
*/
UINT composition_len; /* length of composition, 0 == no composition */
int composition_start; /* the character position for the composition */
} EDITSTATE;
#define SWAP_UINT32(x,y) do { UINT temp = (UINT)(x); (x) = (UINT)(y); (y) = temp; } while(0)
#define ORDER_UINT(x,y) do { if ((UINT)(y) < (UINT)(x)) SWAP_UINT32((x),(y)); } while(0)
/* used for disabled or read-only edit control */
#define EDIT_NOTIFY_PARENT(es, wNotifyCode) \
do \
{ /* Notify parent which has created this edit control */ \
TRACE("notification " #wNotifyCode " sent to hwnd=%p\n", es->hwndParent); \
SendMessageW(es->hwndParent, WM_COMMAND, \
MAKEWPARAM(GetWindowLongPtrW((es->hwndSelf),GWLP_ID), wNotifyCode), \
(LPARAM)(es->hwndSelf)); \
} while(0)
/*********************************************************************
*
* Declarations
*
*/
/*
* These functions have trivial implementations
* We still like to call them internally
* "static inline" makes them more like macro's
*/
static inline BOOL EDIT_EM_CanUndo(const EDITSTATE *es);
static inline void EDIT_EM_EmptyUndoBuffer(EDITSTATE *es);
static inline void EDIT_WM_Clear(EDITSTATE *es);
static inline void EDIT_WM_Cut(EDITSTATE *es);
/*
* Helper functions only valid for one type of control
*/
static void EDIT_BuildLineDefs_ML(EDITSTATE *es, INT iStart, INT iEnd, INT delta, HRGN hrgn);
static void EDIT_CalcLineWidth_SL(EDITSTATE *es);
static LPWSTR EDIT_GetPasswordPointer_SL(EDITSTATE *es);
static void EDIT_MoveDown_ML(EDITSTATE *es, BOOL extend);
static void EDIT_MovePageDown_ML(EDITSTATE *es, BOOL extend);
static void EDIT_MovePageUp_ML(EDITSTATE *es, BOOL extend);
static void EDIT_MoveUp_ML(EDITSTATE *es, BOOL extend);
/*
* Helper functions valid for both single line _and_ multi line controls
*/
static INT EDIT_CallWordBreakProc(EDITSTATE *es, INT start, INT index, INT count, INT action);
static INT EDIT_CharFromPos(EDITSTATE *es, INT x, INT y, LPBOOL after_wrap);
static void EDIT_ConfinePoint(const EDITSTATE *es, LPINT x, LPINT y);
static void EDIT_GetLineRect(EDITSTATE *es, INT line, INT scol, INT ecol, LPRECT rc);
static void EDIT_InvalidateText(EDITSTATE *es, INT start, INT end);
static void EDIT_LockBuffer(EDITSTATE *es);
static BOOL EDIT_MakeFit(EDITSTATE *es, UINT size);
static BOOL EDIT_MakeUndoFit(EDITSTATE *es, UINT size);
static void EDIT_MoveBackward(EDITSTATE *es, BOOL extend);
static void EDIT_MoveEnd(EDITSTATE *es, BOOL extend);
static void EDIT_MoveForward(EDITSTATE *es, BOOL extend);
static void EDIT_MoveHome(EDITSTATE *es, BOOL extend);
static void EDIT_MoveWordBackward(EDITSTATE *es, BOOL extend);
static void EDIT_MoveWordForward(EDITSTATE *es, BOOL extend);
static void EDIT_PaintLine(EDITSTATE *es, HDC hdc, INT line, BOOL rev);
static INT EDIT_PaintText(EDITSTATE *es, HDC hdc, INT x, INT y, INT line, INT col, INT count, BOOL rev);
static void EDIT_SetCaretPos(EDITSTATE *es, INT pos, BOOL after_wrap);
static void EDIT_AdjustFormatRect(EDITSTATE *es);
static void EDIT_SetRectNP(EDITSTATE *es, const RECT *lprc);
static void EDIT_UnlockBuffer(EDITSTATE *es, BOOL force);
static void EDIT_UpdateScrollInfo(EDITSTATE *es);
static INT CALLBACK EDIT_WordBreakProc(LPWSTR s, INT index, INT count, INT action);
/*
* EM_XXX message handlers
*/
static LRESULT EDIT_EM_CharFromPos(EDITSTATE *es, INT x, INT y);
static BOOL EDIT_EM_FmtLines(EDITSTATE *es, BOOL add_eol);
static HLOCAL EDIT_EM_GetHandle(EDITSTATE *es);
static HLOCAL16 EDIT_EM_GetHandle16(EDITSTATE *es);
static INT EDIT_EM_GetLine(EDITSTATE *es, INT line, LPWSTR dst, BOOL unicode);
static LRESULT EDIT_EM_GetSel(const EDITSTATE *es, PUINT start, PUINT end);
static LRESULT EDIT_EM_GetThumb(EDITSTATE *es);
static INT EDIT_EM_LineFromChar(EDITSTATE *es, INT index);
static INT EDIT_EM_LineIndex(const EDITSTATE *es, INT line);
static INT EDIT_EM_LineLength(EDITSTATE *es, INT index);
static BOOL EDIT_EM_LineScroll(EDITSTATE *es, INT dx, INT dy);
static BOOL EDIT_EM_LineScroll_internal(EDITSTATE *es, INT dx, INT dy);
static LRESULT EDIT_EM_PosFromChar(EDITSTATE *es, INT index, BOOL after_wrap);
static void EDIT_EM_ReplaceSel(EDITSTATE *es, BOOL can_undo, LPCWSTR lpsz_replace, BOOL send_update, BOOL honor_limit);
static LRESULT EDIT_EM_Scroll(EDITSTATE *es, INT action);
static void EDIT_EM_ScrollCaret(EDITSTATE *es);
static void EDIT_EM_SetHandle(EDITSTATE *es, HLOCAL hloc);
static void EDIT_EM_SetHandle16(EDITSTATE *es, HLOCAL16 hloc);
static void EDIT_EM_SetLimitText(EDITSTATE *es, UINT limit);
static void EDIT_EM_SetMargins(EDITSTATE *es, INT action, WORD left, WORD right, BOOL repaint);
static void EDIT_EM_SetPasswordChar(EDITSTATE *es, WCHAR c);
static void EDIT_EM_SetSel(EDITSTATE *es, UINT start, UINT end, BOOL after_wrap);
static BOOL EDIT_EM_SetTabStops(EDITSTATE *es, INT count, const INT *tabs);
static BOOL EDIT_EM_SetTabStops16(EDITSTATE *es, INT count, const INT16 *tabs);
static void EDIT_EM_SetWordBreakProc(EDITSTATE *es, void *wbp);
static void EDIT_EM_SetWordBreakProc16(EDITSTATE *es, EDITWORDBREAKPROC16 wbp);
static BOOL EDIT_EM_Undo(EDITSTATE *es);
/*
* WM_XXX message handlers
*/
static void EDIT_WM_Char(EDITSTATE *es, WCHAR c);
static void EDIT_WM_Command(EDITSTATE *es, INT code, INT id, HWND conrtol);
static void EDIT_WM_ContextMenu(EDITSTATE *es, INT x, INT y);
static void EDIT_WM_Copy(EDITSTATE *es);
static LRESULT EDIT_WM_Create(EDITSTATE *es, LPCWSTR name);
static LRESULT EDIT_WM_Destroy(EDITSTATE *es);
static INT EDIT_WM_GetText(const EDITSTATE *es, INT count, LPWSTR dst, BOOL unicode);
static LRESULT EDIT_WM_HScroll(EDITSTATE *es, INT action, INT pos);
static LRESULT EDIT_WM_KeyDown(EDITSTATE *es, INT key);
static LRESULT EDIT_WM_KillFocus(EDITSTATE *es);
static LRESULT EDIT_WM_LButtonDblClk(EDITSTATE *es);
static LRESULT EDIT_WM_LButtonDown(EDITSTATE *es, DWORD keys, INT x, INT y);
static LRESULT EDIT_WM_LButtonUp(EDITSTATE *es);
static LRESULT EDIT_WM_MButtonDown(EDITSTATE *es);
static LRESULT EDIT_WM_MouseMove(EDITSTATE *es, INT x, INT y);
static LRESULT EDIT_WM_NCCreate(HWND hwnd, LPCREATESTRUCTW lpcs, BOOL unicode);
static void EDIT_WM_Paint(EDITSTATE *es, HDC hdc);
static void EDIT_WM_Paste(EDITSTATE *es);
static void EDIT_WM_SetFocus(EDITSTATE *es);
static void EDIT_WM_SetFont(EDITSTATE *es, HFONT font, BOOL redraw);
static void EDIT_WM_SetText(EDITSTATE *es, LPCWSTR text, BOOL unicode);
static void EDIT_WM_Size(EDITSTATE *es, UINT action, INT width, INT height);
static LRESULT EDIT_WM_StyleChanged(EDITSTATE *es, WPARAM which, const STYLESTRUCT *style);
static LRESULT EDIT_WM_SysKeyDown(EDITSTATE *es, INT key, DWORD key_data);
static void EDIT_WM_Timer(EDITSTATE *es);
static LRESULT EDIT_WM_VScroll(EDITSTATE *es, INT action, INT pos);
static void EDIT_UpdateText(EDITSTATE *es, const RECT *rc, BOOL bErase);
static void EDIT_UpdateTextRegion(EDITSTATE *es, HRGN hrgn, BOOL bErase);
static void EDIT_ImeComposition(HWND hwnd, LPARAM CompFlag, EDITSTATE *es);
LRESULT WINAPI EditWndProcA(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam);
LRESULT WINAPI EditWndProcW(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam);
/*********************************************************************
* edit class descriptor
*/
static const WCHAR editW[] = {'E','d','i','t',0};
const struct builtin_class_descr EDIT_builtin_class =
{
editW, /* name */
CS_DBLCLKS | CS_PARENTDC, /* style */
EditWndProcA, /* procA */
EditWndProcW, /* procW */
sizeof(EDITSTATE *), /* extra */
IDC_IBEAM, /* cursor */
0 /* brush */
};
/*********************************************************************
*
* EM_CANUNDO
*
*/
static inline BOOL EDIT_EM_CanUndo(const EDITSTATE *es)
{
return (es->undo_insert_count || strlenW(es->undo_text));
}
/*********************************************************************
*
* EM_EMPTYUNDOBUFFER
*
*/
static inline void EDIT_EM_EmptyUndoBuffer(EDITSTATE *es)
{
es->undo_insert_count = 0;
*es->undo_text = '\0';
}
/*********************************************************************
*
* WM_CLEAR
*
*/
static inline void EDIT_WM_Clear(EDITSTATE *es)
{
static const WCHAR empty_stringW[] = {0};
/* Protect read-only edit control from modification */
if(es->style & ES_READONLY)
return;
EDIT_EM_ReplaceSel(es, TRUE, empty_stringW, TRUE, TRUE);
}
/*********************************************************************
*
* WM_CUT
*
*/
static inline void EDIT_WM_Cut(EDITSTATE *es)
{
EDIT_WM_Copy(es);
EDIT_WM_Clear(es);
}
/**********************************************************************
* get_app_version
*
* Returns the window version in case Wine emulates a later version
* of windows than the application expects.
*
* In a number of cases when windows runs an application that was
* designed for an earlier windows version, windows reverts
* to "old" behaviour of that earlier version.
*
* An example is a disabled edit control that needs to be painted.
* Old style behaviour is to send a WM_CTLCOLOREDIT message. This was
* changed in Win95, NT4.0 by a WM_CTLCOLORSTATIC message _only_ for
* applications with an expected version 0f 4.0 or higher.
*
*/
static DWORD get_app_version(void)
{
static DWORD version;
if (!version)
{
DWORD dwEmulatedVersion;
OSVERSIONINFOW info;
DWORD dwProcVersion = GetProcessVersion(0);
info.dwOSVersionInfoSize = sizeof(OSVERSIONINFOW);
GetVersionExW( &info );
dwEmulatedVersion = MAKELONG( info.dwMinorVersion, info.dwMajorVersion );
/* FIXME: this may not be 100% correct; see discussion on the
* wine developer list in Nov 1999 */
version = dwProcVersion < dwEmulatedVersion ? dwProcVersion : dwEmulatedVersion;
}
return version;
}
static inline UINT get_text_length(EDITSTATE *es)
{
if(es->text_length == (UINT)-1)
es->text_length = strlenW(es->text);
return es->text_length;
}
static inline void text_buffer_changed(EDITSTATE *es)
{
es->text_length = (UINT)-1;
}
static HBRUSH EDIT_NotifyCtlColor(EDITSTATE *es, HDC hdc)
{
HBRUSH hbrush;
UINT msg;
if ( get_app_version() >= 0x40000 && (!es->bEnableState || (es->style & ES_READONLY)))
msg = WM_CTLCOLORSTATIC;
else
msg = WM_CTLCOLOREDIT;
/* why do we notify to es->hwndParent, and we send this one to GetParent()? */
hbrush = (HBRUSH)SendMessageW(GetParent(es->hwndSelf), msg, (WPARAM)hdc, (LPARAM)es->hwndSelf);
if (!hbrush)
hbrush = (HBRUSH)DefWindowProcW(GetParent(es->hwndSelf), msg, (WPARAM)hdc, (LPARAM)es->hwndSelf);
return hbrush;
}
static inline LRESULT DefWindowProcT(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam, BOOL unicode)
{
if(unicode)
return DefWindowProcW(hwnd, msg, wParam, lParam);
else
return DefWindowProcA(hwnd, msg, wParam, lParam);
}
/*********************************************************************
*
* EditWndProc_common
*
* The messages are in the order of the actual integer values
* (which can be found in include/windows.h)
* Wherever possible the 16 bit versions are converted to
* the 32 bit ones, so that we can 'fall through' to the
* helper functions. These are mostly 32 bit (with a few
* exceptions, clearly indicated by a '16' extension to their
* names).
*
*/
static LRESULT WINAPI EditWndProc_common( HWND hwnd, UINT msg,
WPARAM wParam, LPARAM lParam, BOOL unicode )
{
EDITSTATE *es = (EDITSTATE *)GetWindowLongPtrW( hwnd, 0 );
LRESULT result = 0;
TRACE("hwnd=%p msg=%x (%s) wparam=%lx lparam=%lx\n", hwnd, msg, SPY_GetMsgName(msg, hwnd), wParam, lParam);
if (!es && msg != WM_NCCREATE)
return DefWindowProcT(hwnd, msg, wParam, lParam, unicode);
if (es && (msg != WM_DESTROY)) EDIT_LockBuffer(es);
switch (msg) {
case EM_GETSEL16:
wParam = 0;
lParam = 0;
/* fall through */
case EM_GETSEL:
result = EDIT_EM_GetSel(es, (PUINT)wParam, (PUINT)lParam);
break;
case EM_SETSEL16:
if ((short)LOWORD(lParam) == -1)
EDIT_EM_SetSel(es, (UINT)-1, 0, FALSE);
else
EDIT_EM_SetSel(es, LOWORD(lParam), HIWORD(lParam), FALSE);
if (!wParam)
EDIT_EM_ScrollCaret(es);
result = 1;
break;
case EM_SETSEL:
EDIT_EM_SetSel(es, wParam, lParam, FALSE);
EDIT_EM_ScrollCaret(es);
result = 1;
break;
case EM_GETRECT16:
if (lParam)
{
RECT16 *r16 = MapSL(lParam);
r16->left = es->format_rect.left;
r16->top = es->format_rect.top;
r16->right = es->format_rect.right;
r16->bottom = es->format_rect.bottom;
}
break;
case EM_GETRECT:
if (lParam)
CopyRect((LPRECT)lParam, &es->format_rect);
break;
case EM_SETRECT16:
if ((es->style & ES_MULTILINE) && lParam) {
RECT rc;
RECT16 *r16 = MapSL(lParam);
rc.left = r16->left;
rc.top = r16->top;
rc.right = r16->right;
rc.bottom = r16->bottom;
EDIT_SetRectNP(es, &rc);
EDIT_UpdateText(es, NULL, TRUE);
}
break;
case EM_SETRECT:
if ((es->style & ES_MULTILINE) && lParam) {
EDIT_SetRectNP(es, (LPRECT)lParam);
EDIT_UpdateText(es, NULL, TRUE);
}
break;
case EM_SETRECTNP16:
if ((es->style & ES_MULTILINE) && lParam) {
RECT rc;
RECT16 *r16 = MapSL(lParam);
rc.left = r16->left;
rc.top = r16->top;
rc.right = r16->right;
rc.bottom = r16->bottom;
EDIT_SetRectNP(es, &rc);
}
break;
case EM_SETRECTNP:
if ((es->style & ES_MULTILINE) && lParam)
EDIT_SetRectNP(es, (LPRECT)lParam);
break;
case EM_SCROLL16:
case EM_SCROLL:
result = EDIT_EM_Scroll(es, (INT)wParam);
break;
case EM_LINESCROLL16:
wParam = (WPARAM)(INT)(SHORT)HIWORD(lParam);
lParam = (LPARAM)(INT)(SHORT)LOWORD(lParam);
/* fall through */
case EM_LINESCROLL:
result = (LRESULT)EDIT_EM_LineScroll(es, (INT)wParam, (INT)lParam);
break;
case EM_SCROLLCARET16:
case EM_SCROLLCARET:
EDIT_EM_ScrollCaret(es);
result = 1;
break;
case EM_GETMODIFY16:
case EM_GETMODIFY:
result = ((es->flags & EF_MODIFIED) != 0);
break;
case EM_SETMODIFY16:
case EM_SETMODIFY:
if (wParam)
es->flags |= EF_MODIFIED;
else
es->flags &= ~(EF_MODIFIED | EF_UPDATE); /* reset pending updates */
break;
case EM_GETLINECOUNT16:
case EM_GETLINECOUNT:
result = (es->style & ES_MULTILINE) ? es->line_count : 1;
break;
case EM_LINEINDEX16:
if ((INT16)wParam == -1)
wParam = (WPARAM)-1;
/* fall through */
case EM_LINEINDEX:
result = (LRESULT)EDIT_EM_LineIndex(es, (INT)wParam);
break;
case EM_SETHANDLE16:
EDIT_EM_SetHandle16(es, (HLOCAL16)wParam);
break;
case EM_SETHANDLE:
EDIT_EM_SetHandle(es, (HLOCAL)wParam);
break;
case EM_GETHANDLE16:
result = (LRESULT)EDIT_EM_GetHandle16(es);
break;
case EM_GETHANDLE:
result = (LRESULT)EDIT_EM_GetHandle(es);
break;
case EM_GETTHUMB16:
case EM_GETTHUMB:
result = EDIT_EM_GetThumb(es);
break;
/* these messages missing from specs */
case WM_USER+15:
case 0x00bf:
case WM_USER+16:
case 0x00c0:
case WM_USER+19:
case 0x00c3:
case WM_USER+26:
case 0x00ca:
FIXME("undocumented message 0x%x, please report\n", msg);
result = DefWindowProcW(hwnd, msg, wParam, lParam);
break;
case EM_LINELENGTH16:
case EM_LINELENGTH:
result = (LRESULT)EDIT_EM_LineLength(es, (INT)wParam);
break;
case EM_REPLACESEL16:
lParam = (LPARAM)MapSL(lParam);
unicode = FALSE; /* 16-bit message is always ascii */
/* fall through */
case EM_REPLACESEL:
{
LPWSTR textW;
if(unicode)
textW = (LPWSTR)lParam;
else
{
LPSTR textA = (LPSTR)lParam;
INT countW = MultiByteToWideChar(CP_ACP, 0, textA, -1, NULL, 0);
if((textW = HeapAlloc(GetProcessHeap(), 0, countW * sizeof(WCHAR))))
MultiByteToWideChar(CP_ACP, 0, textA, -1, textW, countW);
}
EDIT_EM_ReplaceSel(es, (BOOL)wParam, textW, TRUE, TRUE);
result = 1;
if(!unicode)
HeapFree(GetProcessHeap(), 0, textW);
break;
}
case EM_GETLINE16:
lParam = (LPARAM)MapSL(lParam);
unicode = FALSE; /* 16-bit message is always ascii */
/* fall through */
case EM_GETLINE:
result = (LRESULT)EDIT_EM_GetLine(es, (INT)wParam, (LPWSTR)lParam, unicode);
break;
case EM_LIMITTEXT16:
case EM_SETLIMITTEXT:
EDIT_EM_SetLimitText(es, wParam);
break;
case EM_CANUNDO16:
case EM_CANUNDO:
result = (LRESULT)EDIT_EM_CanUndo(es);
break;
case EM_UNDO16:
case EM_UNDO:
case WM_UNDO:
result = (LRESULT)EDIT_EM_Undo(es);
break;
case EM_FMTLINES16:
case EM_FMTLINES:
result = (LRESULT)EDIT_EM_FmtLines(es, (BOOL)wParam);
break;
case EM_LINEFROMCHAR16:
case EM_LINEFROMCHAR:
result = (LRESULT)EDIT_EM_LineFromChar(es, (INT)wParam);
break;
case EM_SETTABSTOPS16:
result = (LRESULT)EDIT_EM_SetTabStops16(es, (INT)wParam, MapSL(lParam));
break;
case EM_SETTABSTOPS:
result = (LRESULT)EDIT_EM_SetTabStops(es, (INT)wParam, (LPINT)lParam);
break;
case EM_SETPASSWORDCHAR16:
unicode = FALSE; /* 16-bit message is always ascii */
/* fall through */
case EM_SETPASSWORDCHAR:
{
WCHAR charW = 0;
if(unicode)
charW = (WCHAR)wParam;
else
{
CHAR charA = wParam;
MultiByteToWideChar(CP_ACP, 0, &charA, 1, &charW, 1);
}
EDIT_EM_SetPasswordChar(es, charW);
break;
}
case EM_EMPTYUNDOBUFFER16:
case EM_EMPTYUNDOBUFFER:
EDIT_EM_EmptyUndoBuffer(es);
break;
case EM_GETFIRSTVISIBLELINE16:
result = es->y_offset;
break;
case EM_GETFIRSTVISIBLELINE:
result = (es->style & ES_MULTILINE) ? es->y_offset : es->x_offset;
break;
case EM_SETREADONLY16:
case EM_SETREADONLY:
if (wParam) {
SetWindowLongW( hwnd, GWL_STYLE,
GetWindowLongW( hwnd, GWL_STYLE ) | ES_READONLY );
es->style |= ES_READONLY;
} else {
SetWindowLongW( hwnd, GWL_STYLE,
GetWindowLongW( hwnd, GWL_STYLE ) & ~ES_READONLY );
es->style &= ~ES_READONLY;
}
result = 1;
break;
case EM_SETWORDBREAKPROC16:
EDIT_EM_SetWordBreakProc16(es, (EDITWORDBREAKPROC16)lParam);
break;
case EM_SETWORDBREAKPROC:
EDIT_EM_SetWordBreakProc(es, (void *)lParam);
break;
case EM_GETWORDBREAKPROC16:
result = (LRESULT)es->word_break_proc16;
break;
case EM_GETWORDBREAKPROC:
result = (LRESULT)es->word_break_proc;
break;
case EM_GETPASSWORDCHAR16:
unicode = FALSE; /* 16-bit message is always ascii */
/* fall through */
case EM_GETPASSWORDCHAR:
{
if(unicode)
result = es->password_char;
else
{
WCHAR charW = es->password_char;
CHAR charA = 0;
WideCharToMultiByte(CP_ACP, 0, &charW, 1, &charA, 1, NULL, NULL);
result = charA;
}
break;
}
/* The following EM_xxx are new to win95 and don't exist for 16 bit */
case EM_SETMARGINS:
EDIT_EM_SetMargins(es, (INT)wParam, LOWORD(lParam), HIWORD(lParam), TRUE);
break;
case EM_GETMARGINS:
result = MAKELONG(es->left_margin, es->right_margin);
break;
case EM_GETLIMITTEXT:
result = es->buffer_limit;
break;
case EM_POSFROMCHAR:
if ((INT)wParam >= get_text_length(es)) result = -1;
else result = EDIT_EM_PosFromChar(es, (INT)wParam, FALSE);
break;
case EM_CHARFROMPOS:
result = EDIT_EM_CharFromPos(es, (short)LOWORD(lParam), (short)HIWORD(lParam));
break;
/* End of the EM_ messages which were in numerical order; what order
* are these in? vaguely alphabetical?
*/
case WM_NCCREATE:
result = EDIT_WM_NCCreate(hwnd, (LPCREATESTRUCTW)lParam, unicode);
break;
case WM_DESTROY:
result = EDIT_WM_Destroy(es);
es = NULL;
break;
case WM_GETDLGCODE:
result = DLGC_HASSETSEL | DLGC_WANTCHARS | DLGC_WANTARROWS;
if (es->style & ES_MULTILINE)
result |= DLGC_WANTALLKEYS;
if (lParam && (((LPMSG)lParam)->message == WM_KEYDOWN))
{
int vk = (int)((LPMSG)lParam)->wParam;
if (es->hwndListBox)
{
if (vk == VK_RETURN || vk == VK_ESCAPE)
if (SendMessageW(GetParent(hwnd), CB_GETDROPPEDSTATE, 0, 0))
result |= DLGC_WANTMESSAGE;
}
else
{
switch (vk)
{
case VK_ESCAPE:
SendMessageW(GetParent(hwnd), WM_CLOSE, 0, 0);
break;
case VK_TAB:
SendMessageW(GetParent(hwnd), WM_NEXTDLGCTL, (GetKeyState(VK_SHIFT) & 0x8000), 0);
break;
default:
break;
}
}
}
break;
case WM_IME_CHAR:
if (!unicode)
{
WCHAR charW;
CHAR strng[2];
strng[0] = wParam >> 8;
strng[1] = wParam & 0xff;
if (strng[0]) MultiByteToWideChar(CP_ACP, 0, strng, 2, &charW, 1);
else MultiByteToWideChar(CP_ACP, 0, &strng[1], 1, &charW, 1);
EDIT_WM_Char(es, charW);
break;
}
/* fall through */
case WM_CHAR:
{
WCHAR charW;
if(unicode)
charW = wParam;
else
{
CHAR charA = wParam;
MultiByteToWideChar(CP_ACP, 0, &charA, 1, &charW, 1);
}
if (es->hwndListBox)
{
if (charW == VK_RETURN || charW == VK_ESCAPE)
{
if (SendMessageW(GetParent(hwnd), CB_GETDROPPEDSTATE, 0, 0))
{
SendMessageW(GetParent(hwnd), WM_KEYDOWN, charW, 0);
break;
}
}
}
else
{
if (charW == VK_TAB || charW == VK_RETURN)
break;
}
EDIT_WM_Char(es, charW);
break;
}
case WM_CLEAR:
EDIT_WM_Clear(es);
break;
case WM_COMMAND:
EDIT_WM_Command(es, HIWORD(wParam), LOWORD(wParam), (HWND)lParam);
break;
case WM_CONTEXTMENU:
EDIT_WM_ContextMenu(es, (short)LOWORD(lParam), (short)HIWORD(lParam));
break;
case WM_COPY:
EDIT_WM_Copy(es);
break;
case WM_CREATE:
if(unicode)
result = EDIT_WM_Create(es, ((LPCREATESTRUCTW)lParam)->lpszName);
else
{
LPCSTR nameA = ((LPCREATESTRUCTA)lParam)->lpszName;
LPWSTR nameW = NULL;
if(nameA)
{
INT countW = MultiByteToWideChar(CP_ACP, 0, nameA, -1, NULL, 0);
if((nameW = HeapAlloc(GetProcessHeap(), 0, countW * sizeof(WCHAR))))
MultiByteToWideChar(CP_ACP, 0, nameA, -1, nameW, countW);
}
result = EDIT_WM_Create(es, nameW);
HeapFree(GetProcessHeap(), 0, nameW);
}
break;
case WM_CUT:
EDIT_WM_Cut(es);
break;
case WM_ENABLE:
es->bEnableState = (BOOL) wParam;
EDIT_UpdateText(es, NULL, TRUE);
break;
case WM_ERASEBKGND:
/* we do the proper erase in EDIT_WM_Paint */
result = 1;
break;
case WM_GETFONT:
result = (LRESULT)es->font;
break;
case WM_GETTEXT:
result = (LRESULT)EDIT_WM_GetText(es, (INT)wParam, (LPWSTR)lParam, unicode);
break;
case WM_GETTEXTLENGTH:
if (unicode) result = get_text_length(es);
else result = WideCharToMultiByte( CP_ACP, 0, es->text, get_text_length(es),
NULL, 0, NULL, NULL );
break;
case WM_HSCROLL:
result = EDIT_WM_HScroll(es, LOWORD(wParam), (short)HIWORD(wParam));
break;
case WM_KEYDOWN:
result = EDIT_WM_KeyDown(es, (INT)wParam);
break;
case WM_KILLFOCUS:
result = EDIT_WM_KillFocus(es);
break;
case WM_LBUTTONDBLCLK:
result = EDIT_WM_LButtonDblClk(es);
break;
case WM_LBUTTONDOWN:
result = EDIT_WM_LButtonDown(es, wParam, (short)LOWORD(lParam), (short)HIWORD(lParam));
break;
case WM_LBUTTONUP:
result = EDIT_WM_LButtonUp(es);
break;
case WM_MBUTTONDOWN:
result = EDIT_WM_MButtonDown(es);
break;
case WM_MOUSEMOVE:
result = EDIT_WM_MouseMove(es, (short)LOWORD(lParam), (short)HIWORD(lParam));
break;
case WM_PRINTCLIENT:
case WM_PAINT:
EDIT_WM_Paint(es, (HDC)wParam);
break;
case WM_PASTE:
EDIT_WM_Paste(es);
break;
case WM_SETFOCUS:
EDIT_WM_SetFocus(es);
break;
case WM_SETFONT:
EDIT_WM_SetFont(es, (HFONT)wParam, LOWORD(lParam) != 0);
break;
case WM_SETREDRAW:
/* FIXME: actually set an internal flag and behave accordingly */
break;
case WM_SETTEXT:
EDIT_WM_SetText(es, (LPCWSTR)lParam, unicode);
result = TRUE;
break;
case WM_SIZE:
EDIT_WM_Size(es, (UINT)wParam, LOWORD(lParam), HIWORD(lParam));
break;
case WM_STYLECHANGED:
result = EDIT_WM_StyleChanged(es, wParam, (const STYLESTRUCT *)lParam);
break;
case WM_STYLECHANGING:
result = 0; /* See EDIT_WM_StyleChanged */
break;
case WM_SYSKEYDOWN:
result = EDIT_WM_SysKeyDown(es, (INT)wParam, (DWORD)lParam);
break;
case WM_TIMER:
EDIT_WM_Timer(es);
break;
case WM_VSCROLL:
result = EDIT_WM_VScroll(es, LOWORD(wParam), (short)HIWORD(wParam));
break;
case WM_MOUSEWHEEL:
{
int gcWheelDelta = 0;
UINT pulScrollLines = 3;
SystemParametersInfoW(SPI_GETWHEELSCROLLLINES,0, &pulScrollLines, 0);
if (wParam & (MK_SHIFT | MK_CONTROL)) {
result = DefWindowProcW(hwnd, msg, wParam, lParam);
break;
}
gcWheelDelta -= GET_WHEEL_DELTA_WPARAM(wParam);
if (abs(gcWheelDelta) >= WHEEL_DELTA && pulScrollLines)
{
int cLineScroll= (int) min((UINT) es->line_count, pulScrollLines);
cLineScroll *= (gcWheelDelta / WHEEL_DELTA);
result = EDIT_EM_LineScroll(es, 0, cLineScroll);
}
}
break;
/* IME messages to make the edit control IME aware */
case WM_IME_SETCONTEXT:
break;
case WM_IME_STARTCOMPOSITION:
/*
* FIXME in IME: This message is not always sent like it should be
*/
if (es->selection_start != es->selection_end)
{
static const WCHAR empty_stringW[] = {0};
EDIT_EM_ReplaceSel(es, TRUE, empty_stringW, TRUE, TRUE);
}
es->composition_start = es->selection_end;
es->composition_len = 0;
break;
case WM_IME_COMPOSITION:
{
int caret_pos = es->selection_end;
if (es->composition_len == 0)
{
if (es->selection_start != es->selection_end)
{
static const WCHAR empty_stringW[] = {0};
EDIT_EM_ReplaceSel(es, TRUE, empty_stringW, TRUE, TRUE);
}
es->composition_start = es->selection_end;
}
EDIT_ImeComposition(hwnd,lParam,es);
EDIT_SetCaretPos(es, caret_pos, es->flags & EF_AFTER_WRAP);
break;
}
case WM_IME_ENDCOMPOSITION:
es->composition_len= 0;
break;
case WM_IME_COMPOSITIONFULL:
break;
case WM_IME_SELECT:
break;
case WM_IME_CONTROL:
break;
default:
result = DefWindowProcT(hwnd, msg, wParam, lParam, unicode);
break;
}
if (es) EDIT_UnlockBuffer(es, FALSE);
TRACE("hwnd=%p msg=%x (%s) -- 0x%08lx\n", hwnd, msg, SPY_GetMsgName(msg, hwnd), result);
return result;
}
/*********************************************************************
*
* EditWndProcW (USER32.@)
*/
LRESULT WINAPI EditWndProcW(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
return EditWndProc_common(hWnd, uMsg, wParam, lParam, TRUE);
}
/*********************************************************************
*
* EditWndProc (USER32.@)
*/
LRESULT WINAPI EditWndProcA(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
return EditWndProc_common(hWnd, uMsg, wParam, lParam, FALSE);
}
/*********************************************************************
*
* EDIT_BuildLineDefs_ML
*
* Build linked list of text lines.
* Lines can end with '\0' (last line), a character (if it is wrapped),
* a soft return '\r\r\n' or a hard return '\r\n'
*
*/
static void EDIT_BuildLineDefs_ML(EDITSTATE *es, INT istart, INT iend, INT delta, HRGN hrgn)
{
HDC dc;
HFONT old_font = 0;
LPWSTR current_position, cp;
INT fw;
LINEDEF *current_line;
LINEDEF *previous_line;
LINEDEF *start_line;
INT line_index = 0, nstart_line = 0, nstart_index = 0;
INT line_count = es->line_count;
INT orig_net_length;
RECT rc;
if (istart == iend && delta == 0)
return;
dc = GetDC(es->hwndSelf);
if (es->font)
old_font = SelectObject(dc, es->font);
previous_line = NULL;
current_line = es->first_line_def;
/* Find starting line. istart must lie inside an existing line or
* at the end of buffer */
do {
if (istart < current_line->index + current_line->length ||
current_line->ending == END_0)
break;
previous_line = current_line;
current_line = current_line->next;
line_index++;
} while (current_line);
if (!current_line) /* Error occurred start is not inside previous buffer */
{
FIXME(" modification occurred outside buffer\n");
ReleaseDC(es->hwndSelf, dc);
return;
}
/* Remember start of modifications in order to calculate update region */
nstart_line = line_index;
nstart_index = current_line->index;
/* We must start to reformat from the previous line since the modifications
* may have caused the line to wrap upwards. */
if (!(es->style & ES_AUTOHSCROLL) && line_index > 0)
{
line_index--;
current_line = previous_line;
}
start_line = current_line;
fw = es->format_rect.right - es->format_rect.left;
current_position = es->text + current_line->index;
do {
if (current_line != start_line)
{
if (!current_line || current_line->index + delta > current_position - es->text)
{
/* The buffer has been expanded, create a new line and
insert it into the link list */
LINEDEF *new_line = HeapAlloc(GetProcessHeap(), 0, sizeof(LINEDEF));
new_line->next = previous_line->next;
previous_line->next = new_line;
current_line = new_line;
es->line_count++;
}
else if (current_line->index + delta < current_position - es->text)
{
/* The previous line merged with this line so we delete this extra entry */
previous_line->next = current_line->next;
HeapFree(GetProcessHeap(), 0, current_line);
current_line = previous_line->next;
es->line_count--;
continue;
}
else /* current_line->index + delta == current_position */
{
if (current_position - es->text > iend)
break; /* We reached end of line modifications */
/* else recalulate this line */
}
}
current_line->index = current_position - es->text;
orig_net_length = current_line->net_length;
/* Find end of line */
cp = current_position;
while (*cp) {
if (*cp == '\n') break;
if ((*cp == '\r') && (*(cp + 1) == '\n'))
break;
cp++;
}
/* Mark type of line termination */
if (!(*cp)) {
current_line->ending = END_0;
current_line->net_length = strlenW(current_position);
} else if ((cp > current_position) && (*(cp - 1) == '\r')) {
current_line->ending = END_SOFT;
current_line->net_length = cp - current_position - 1;
} else if (*cp == '\n') {
current_line->ending = END_RICH;
current_line->net_length = cp - current_position;
} else {
current_line->ending = END_HARD;
current_line->net_length = cp - current_position;
}
/* Calculate line width */
current_line->width = (INT)LOWORD(GetTabbedTextExtentW(dc,
current_position, current_line->net_length,
es->tabs_count, es->tabs));
/* FIXME: check here for lines that are too wide even in AUTOHSCROLL (> 32767 ???) */
if (!(es->style & ES_AUTOHSCROLL)) {
if (current_line->width > fw) {
INT next = 0;
INT prev;
do {
prev = next;
next = EDIT_CallWordBreakProc(es, current_position - es->text,
prev + 1, current_line->net_length, WB_RIGHT);
current_line->width = (INT)LOWORD(GetTabbedTextExtentW(dc,
current_position, next, es->tabs_count, es->tabs));
} while (current_line->width <= fw);
if (!prev) { /* Didn't find a line break so force a break */
next = 0;
do {
prev = next;
next++;
current_line->width = (INT)LOWORD(GetTabbedTextExtentW(dc,
current_position, next, es->tabs_count, es->tabs));
} while (current_line->width <= fw);
if (!prev)
prev = 1;
}
/* If the first line we are calculating, wrapped before istart, we must
* adjust istart in order for this to be reflected in the update region. */
if (current_line->index == nstart_index && istart > current_line->index + prev)
istart = current_line->index + prev;
/* else if we are updating the previous line before the first line we
* are re-calculating and it expanded */
else if (current_line == start_line &&
current_line->index != nstart_index && orig_net_length < prev)
{
/* Line expanded due to an upwards line wrap so we must partially include
* previous line in update region */
nstart_line = line_index;
nstart_index = current_line->index;
istart = current_line->index + orig_net_length;
}
current_line->net_length = prev;
current_line->ending = END_WRAP;
current_line->width = (INT)LOWORD(GetTabbedTextExtentW(dc, current_position,
current_line->net_length, es->tabs_count, es->tabs));
}
else if (orig_net_length < current_line->net_length &&
current_line == start_line &&
current_line->index != nstart_index) {
/* The previous line expanded but it's still not as wide as the client rect */
/* The expansion is due to an upwards line wrap so we must partially include
it in the update region */
nstart_line = line_index;
nstart_index = current_line->index;
istart = current_line->index + orig_net_length;
}
}
/* Adjust length to include line termination */
switch (current_line->ending) {
case END_SOFT:
current_line->length = current_line->net_length + 3;
break;
case END_RICH:
current_line->length = current_line->net_length + 1;
break;
case END_HARD:
current_line->length = current_line->net_length + 2;
break;
case END_WRAP:
case END_0:
current_line->length = current_line->net_length;
break;
}
es->text_width = max(es->text_width, current_line->width);
current_position += current_line->length;
previous_line = current_line;
current_line = current_line->next;
line_index++;
} while (previous_line->ending != END_0);
/* Finish adjusting line indexes by delta or remove hanging lines */
if (previous_line->ending == END_0)
{
LINEDEF *pnext = NULL;
previous_line->next = NULL;
while (current_line)
{
pnext = current_line->next;
HeapFree(GetProcessHeap(), 0, current_line);
current_line = pnext;
es->line_count--;
}
}
else if (delta != 0)
{
while (current_line)
{
current_line->index += delta;
current_line = current_line->next;
}
}
/* Calculate rest of modification rectangle */
if (hrgn)
{
HRGN tmphrgn;
/*
* We calculate two rectangles. One for the first line which may have
* an indent with respect to the format rect. The other is a format-width
* rectangle that spans the rest of the lines that changed or moved.
*/
rc.top = es->format_rect.top + nstart_line * es->line_height -
(es->y_offset * es->line_height); /* Adjust for vertical scrollbar */
rc.bottom = rc.top + es->line_height;
if ((es->style & ES_CENTER) || (es->style & ES_RIGHT))
rc.left = es->format_rect.left;
else
rc.left = es->format_rect.left + (INT)LOWORD(GetTabbedTextExtentW(dc,
es->text + nstart_index, istart - nstart_index,
es->tabs_count, es->tabs)) - es->x_offset; /* Adjust for horz scroll */
rc.right = es->format_rect.right;
SetRectRgn(hrgn, rc.left, rc.top, rc.right, rc.bottom);
rc.top = rc.bottom;
rc.left = es->format_rect.left;
rc.right = es->format_rect.right;
/*
* If lines were added or removed we must re-paint the remainder of the
* lines since the remaining lines were either shifted up or down.
*/
if (line_count < es->line_count) /* We added lines */
rc.bottom = es->line_count * es->line_height;
else if (line_count > es->line_count) /* We removed lines */
rc.bottom = line_count * es->line_height;
else
rc.bottom = line_index * es->line_height;
rc.bottom += es->format_rect.top;
rc.bottom -= (es->y_offset * es->line_height); /* Adjust for vertical scrollbar */
tmphrgn = CreateRectRgn(rc.left, rc.top, rc.right, rc.bottom);
CombineRgn(hrgn, hrgn, tmphrgn, RGN_OR);
DeleteObject(tmphrgn);
}
if (es->font)
SelectObject(dc, old_font);
ReleaseDC(es->hwndSelf, dc);
}
/*********************************************************************
*
* EDIT_CalcLineWidth_SL
*
*/
static void EDIT_CalcLineWidth_SL(EDITSTATE *es)
{
SIZE size;
LPWSTR text;
HDC dc;
HFONT old_font = 0;
text = EDIT_GetPasswordPointer_SL(es);
dc = GetDC(es->hwndSelf);
if (es->font)
old_font = SelectObject(dc, es->font);
GetTextExtentPoint32W(dc, text, strlenW(text), &size);
if (es->font)
SelectObject(dc, old_font);
ReleaseDC(es->hwndSelf, dc);
if (es->style & ES_PASSWORD)
HeapFree(GetProcessHeap(), 0, text);
es->text_width = size.cx;
}
/*********************************************************************
*
* EDIT_CallWordBreakProc
*
* Call appropriate WordBreakProc (internal or external).
*
* Note: The "start" argument should always be an index referring
* to es->text. The actual wordbreak proc might be
* 16 bit, so we can't always pass any 32 bit LPSTR.
* Hence we assume that es->text is the buffer that holds
* the string under examination (we can decide this for ourselves).
*
*/
static INT EDIT_CallWordBreakProc(EDITSTATE *es, INT start, INT index, INT count, INT action)
{
INT ret;
if (es->word_break_proc16) {
HGLOBAL16 hglob16;
SEGPTR segptr;
INT countA;
WORD args[5];
DWORD result;
countA = WideCharToMultiByte(CP_ACP, 0, es->text + start, count, NULL, 0, NULL, NULL);
hglob16 = GlobalAlloc16(GMEM_MOVEABLE | GMEM_ZEROINIT, countA);
segptr = WOWGlobalLock16(hglob16);
WideCharToMultiByte(CP_ACP, 0, es->text + start, count, MapSL(segptr), countA, NULL, NULL);
args[4] = SELECTOROF(segptr);
args[3] = OFFSETOF(segptr);
args[2] = index;
args[1] = countA;
args[0] = action;
WOWCallback16Ex((DWORD)es->word_break_proc16, WCB16_PASCAL, sizeof(args), args, &result);
ret = LOWORD(result);
GlobalUnlock16(hglob16);
GlobalFree16(hglob16);
}
else if (es->word_break_proc)
{
if(es->is_unicode)
{
EDITWORDBREAKPROCW wbpW = (EDITWORDBREAKPROCW)es->word_break_proc;
TRACE_(relay)("(UNICODE wordbrk=%p,str=%s,idx=%d,cnt=%d,act=%d)\n",
es->word_break_proc, debugstr_wn(es->text + start, count), index, count, action);
ret = wbpW(es->text + start, index, count, action);
}
else
{
EDITWORDBREAKPROCA wbpA = (EDITWORDBREAKPROCA)es->word_break_proc;
INT countA;
CHAR *textA;
countA = WideCharToMultiByte(CP_ACP, 0, es->text + start, count, NULL, 0, NULL, NULL);
textA = HeapAlloc(GetProcessHeap(), 0, countA);
WideCharToMultiByte(CP_ACP, 0, es->text + start, count, textA, countA, NULL, NULL);
TRACE_(relay)("(ANSI wordbrk=%p,str=%s,idx=%d,cnt=%d,act=%d)\n",
es->word_break_proc, debugstr_an(textA, countA), index, countA, action);
ret = wbpA(textA, index, countA, action);
HeapFree(GetProcessHeap(), 0, textA);
}
}
else
ret = EDIT_WordBreakProc(es->text + start, index, count, action);
return ret;
}
/*********************************************************************
*
* EDIT_CharFromPos
*
* Beware: This is not the function called on EM_CHARFROMPOS
* The position _can_ be outside the formatting / client
* rectangle
* The return value is only the character index
*
*/
static INT EDIT_CharFromPos(EDITSTATE *es, INT x, INT y, LPBOOL after_wrap)
{
INT index;
HDC dc;
HFONT old_font = 0;
INT x_high = 0, x_low = 0;
if (es->style & ES_MULTILINE) {
INT line = (y - es->format_rect.top) / es->line_height + es->y_offset;
INT line_index = 0;
LINEDEF *line_def = es->first_line_def;
INT low, high;
while ((line > 0) && line_def->next) {
line_index += line_def->length;
line_def = line_def->next;
line--;
}
x += es->x_offset - es->format_rect.left;
if (es->style & ES_RIGHT)
x -= (es->format_rect.right - es->format_rect.left) - line_def->width;
else if (es->style & ES_CENTER)
x -= ((es->format_rect.right - es->format_rect.left) - line_def->width) / 2;
if (x >= line_def->width) {
if (after_wrap)
*after_wrap = (line_def->ending == END_WRAP);
return line_index + line_def->net_length;
}
if (x <= 0) {
if (after_wrap)
*after_wrap = FALSE;
return line_index;
}
dc = GetDC(es->hwndSelf);
if (es->font)
old_font = SelectObject(dc, es->font);
low = line_index;
high = line_index + line_def->net_length + 1;
while (low < high - 1)
{
INT mid = (low + high) / 2;
INT x_now = LOWORD(GetTabbedTextExtentW(dc, es->text + line_index, mid - line_index, es->tabs_count, es->tabs));
if (x_now > x) {
high = mid;
x_high = x_now;
} else {
low = mid;
x_low = x_now;
}
}
if (abs(x_high - x) + 1 <= abs(x_low - x))
index = high;
else
index = low;
if (after_wrap)
*after_wrap = ((index == line_index + line_def->net_length) &&
(line_def->ending == END_WRAP));
} else {
LPWSTR text;
SIZE size;
if (after_wrap)
*after_wrap = FALSE;
x -= es->format_rect.left;
if (!x)
return es->x_offset;
if (!es->x_offset)
{
INT indent = (es->format_rect.right - es->format_rect.left) - es->text_width;
if (es->style & ES_RIGHT)
x -= indent;
else if (es->style & ES_CENTER)
x -= indent / 2;
}
text = EDIT_GetPasswordPointer_SL(es);
dc = GetDC(es->hwndSelf);
if (es->font)
old_font = SelectObject(dc, es->font);
if (x < 0)
{
INT low = 0;
INT high = es->x_offset;
while (low < high - 1)
{
INT mid = (low + high) / 2;
GetTextExtentPoint32W( dc, text + mid,
es->x_offset - mid, &size );
if (size.cx > -x) {
low = mid;
x_low = size.cx;
} else {
high = mid;
x_high = size.cx;
}
}
if (abs(x_high + x) <= abs(x_low + x) + 1)
index = high;
else
index = low;
}
else
{
INT low = es->x_offset;
INT high = get_text_length(es) + 1;
while (low < high - 1)
{
INT mid = (low + high) / 2;
GetTextExtentPoint32W( dc, text + es->x_offset,
mid - es->x_offset, &size );
if (size.cx > x) {
high = mid;
x_high = size.cx;
} else {
low = mid;
x_low = size.cx;
}
}
if (abs(x_high - x) <= abs(x_low - x) + 1)
index = high;
else
index = low;
}
if (es->style & ES_PASSWORD)
HeapFree(GetProcessHeap(), 0, text);
}
if (es->font)
SelectObject(dc, old_font);
ReleaseDC(es->hwndSelf, dc);
return index;
}
/*********************************************************************
*
* EDIT_ConfinePoint
*
* adjusts the point to be within the formatting rectangle
* (so CharFromPos returns the nearest _visible_ character)
*
*/
static void EDIT_ConfinePoint(const EDITSTATE *es, LPINT x, LPINT y)
{
*x = min(max(*x, es->format_rect.left), es->format_rect.right - 1);
*y = min(max(*y, es->format_rect.top), es->format_rect.bottom - 1);
}
/*********************************************************************
*
* EDIT_GetLineRect
*
* Calculates the bounding rectangle for a line from a starting
* column to an ending column.
*
*/
static void EDIT_GetLineRect(EDITSTATE *es, INT line, INT scol, INT ecol, LPRECT rc)
{
INT line_index = EDIT_EM_LineIndex(es, line);
if (es->style & ES_MULTILINE)
rc->top = es->format_rect.top + (line - es->y_offset) * es->line_height;
else
rc->top = es->format_rect.top;
rc->bottom = rc->top + es->line_height;
rc->left = (scol == 0) ? es->format_rect.left : (short)LOWORD(EDIT_EM_PosFromChar(es, line_index + scol, TRUE));
rc->right = (ecol == -1) ? es->format_rect.right : (short)LOWORD(EDIT_EM_PosFromChar(es, line_index + ecol, TRUE));
}
/*********************************************************************
*
* EDIT_GetPasswordPointer_SL
*
* note: caller should free the (optionally) allocated buffer
*
*/
static LPWSTR EDIT_GetPasswordPointer_SL(EDITSTATE *es)
{
if (es->style & ES_PASSWORD) {
INT len = get_text_length(es);
LPWSTR text = HeapAlloc(GetProcessHeap(), 0, (len + 1) * sizeof(WCHAR));
text[len] = '\0';
while(len) text[--len] = es->password_char;
return text;
} else
return es->text;
}
/*********************************************************************
*
* EDIT_LockBuffer
*
* This acts as a LocalLock16(), but it locks only once. This way
* you can call it whenever you like, without unlocking.
*
* Initially the edit control allocates a HLOCAL32 buffer
* (32 bit linear memory handler). However, 16 bit application
* might send an EM_GETHANDLE message and expect a HLOCAL16 (16 bit SEG:OFF
* handler). From that moment on we have to keep using this 16 bit memory
* handler, because it is supposed to be valid at all times after EM_GETHANDLE.
* What we do is create a HLOCAL16 buffer, copy the text, and do pointer
* conversion.
*
*/
static void EDIT_LockBuffer(EDITSTATE *es)
{
STACK16FRAME* stack16 = MapSL(PtrToUlong(NtCurrentTeb()->WOW32Reserved));
HINSTANCE16 hInstance = GetWindowLongPtrW( es->hwndSelf, GWLP_HINSTANCE );
if (!es->text) {
CHAR *textA = NULL;
UINT countA = 0;
BOOL _16bit = FALSE;
if(es->hloc32W)
{
if(es->hloc32A)
{
TRACE("Synchronizing with 32-bit ANSI buffer\n");
textA = LocalLock(es->hloc32A);
countA = strlen(textA) + 1;
}
else if(es->hloc16)
{
HANDLE16 oldDS = stack16->ds;
TRACE("Synchronizing with 16-bit ANSI buffer\n");
stack16->ds = hInstance;
textA = MapSL(LocalLock16(es->hloc16));
stack16->ds = oldDS;
countA = strlen(textA) + 1;
_16bit = TRUE;
}
}
else {
ERR("no buffer ... please report\n");
return;
}
if(textA)
{
HLOCAL hloc32W_new;
UINT countW_new = MultiByteToWideChar(CP_ACP, 0, textA, countA, NULL, 0);
TRACE("%d bytes translated to %d WCHARs\n", countA, countW_new);
if(countW_new > es->buffer_size + 1)
{
UINT alloc_size = ROUND_TO_GROW(countW_new * sizeof(WCHAR));
TRACE("Resizing 32-bit UNICODE buffer from %d+1 to %d WCHARs\n", es->buffer_size, countW_new);
hloc32W_new = LocalReAlloc(es->hloc32W, alloc_size, LMEM_MOVEABLE | LMEM_ZEROINIT);
if(hloc32W_new)
{
es->hloc32W = hloc32W_new;
es->buffer_size = LocalSize(hloc32W_new)/sizeof(WCHAR) - 1;
TRACE("Real new size %d+1 WCHARs\n", es->buffer_size);
}
else
WARN("FAILED! Will synchronize partially\n");
}
}
/*TRACE("Locking 32-bit UNICODE buffer\n");*/
es->text = LocalLock(es->hloc32W);
if(textA)
{
MultiByteToWideChar(CP_ACP, 0, textA, countA, es->text, es->buffer_size + 1);
if(_16bit)
{
HANDLE16 oldDS = stack16->ds;
stack16->ds = hInstance;
LocalUnlock16(es->hloc16);
stack16->ds = oldDS;
}
else
LocalUnlock(es->hloc32A);
}
}
if(es->flags & EF_APP_HAS_HANDLE) text_buffer_changed(es);
es->lock_count++;
}
/*********************************************************************
*
* EDIT_SL_InvalidateText
*
* Called from EDIT_InvalidateText().
* Does the job for single-line controls only.
*
*/
static void EDIT_SL_InvalidateText(EDITSTATE *es, INT start, INT end)
{
RECT line_rect;
RECT rc;
EDIT_GetLineRect(es, 0, start, end, &line_rect);
if (IntersectRect(&rc, &line_rect, &es->format_rect))
EDIT_UpdateText(es, &rc, TRUE);
}
/*********************************************************************
*
* EDIT_ML_InvalidateText
*
* Called from EDIT_InvalidateText().
* Does the job for multi-line controls only.
*
*/
static void EDIT_ML_InvalidateText(EDITSTATE *es, INT start, INT end)
{
INT vlc = (es->format_rect.bottom - es->format_rect.top) / es->line_height;
INT sl = EDIT_EM_LineFromChar(es, start);
INT el = EDIT_EM_LineFromChar(es, end);
INT sc;
INT ec;
RECT rc1;
RECT rcWnd;
RECT rcLine;
RECT rcUpdate;
INT l;
if ((el < es->y_offset) || (sl > es->y_offset + vlc))
return;
sc = start - EDIT_EM_LineIndex(es, sl);
ec = end - EDIT_EM_LineIndex(es, el);
if (sl < es->y_offset) {
sl = es->y_offset;
sc = 0;
}
if (el > es->y_offset + vlc) {
el = es->y_offset + vlc;
ec = EDIT_EM_LineLength(es, EDIT_EM_LineIndex(es, el));
}
GetClientRect(es->hwndSelf, &rc1);
IntersectRect(&rcWnd, &rc1, &es->format_rect);
if (sl == el) {
EDIT_GetLineRect(es, sl, sc, ec, &rcLine);
if (IntersectRect(&rcUpdate, &rcWnd, &rcLine))
EDIT_UpdateText(es, &rcUpdate, TRUE);
} else {
EDIT_GetLineRect(es, sl, sc,
EDIT_EM_LineLength(es,
EDIT_EM_LineIndex(es, sl)),
&rcLine);
if (IntersectRect(&rcUpdate, &rcWnd, &rcLine))
EDIT_UpdateText(es, &rcUpdate, TRUE);
for (l = sl + 1 ; l < el ; l++) {
EDIT_GetLineRect(es, l, 0,
EDIT_EM_LineLength(es,
EDIT_EM_LineIndex(es, l)),
&rcLine);
if (IntersectRect(&rcUpdate, &rcWnd, &rcLine))
EDIT_UpdateText(es, &rcUpdate, TRUE);
}
EDIT_GetLineRect(es, el, 0, ec, &rcLine);
if (IntersectRect(&rcUpdate, &rcWnd, &rcLine))
EDIT_UpdateText(es, &rcUpdate, TRUE);
}
}
/*********************************************************************
*
* EDIT_InvalidateText
*
* Invalidate the text from offset start up to, but not including,
* offset end. Useful for (re)painting the selection.
* Regions outside the linewidth are not invalidated.
* end == -1 means end == TextLength.
* start and end need not be ordered.
*
*/
static void EDIT_InvalidateText(EDITSTATE *es, INT start, INT end)
{
if (end == start)
return;
if (end == -1)
end = get_text_length(es);
if (end < start) {
INT tmp = start;
start = end;
end = tmp;
}
if (es->style & ES_MULTILINE)
EDIT_ML_InvalidateText(es, start, end);
else
EDIT_SL_InvalidateText(es, start, end);
}
/*********************************************************************
*
* EDIT_MakeFit
*
* Try to fit size + 1 characters in the buffer.
*/
static BOOL EDIT_MakeFit(EDITSTATE *es, UINT size)
{
HLOCAL hNew32W;
if (size <= es->buffer_size)
return TRUE;
TRACE("trying to ReAlloc to %d+1 characters\n", size);
/* Force edit to unlock it's buffer. es->text now NULL */
EDIT_UnlockBuffer(es, TRUE);
if (es->hloc32W) {
UINT alloc_size = ROUND_TO_GROW((size + 1) * sizeof(WCHAR));
if ((hNew32W = LocalReAlloc(es->hloc32W, alloc_size, LMEM_MOVEABLE | LMEM_ZEROINIT))) {
TRACE("Old 32 bit handle %p, new handle %p\n", es->hloc32W, hNew32W);
es->hloc32W = hNew32W;
es->buffer_size = LocalSize(hNew32W)/sizeof(WCHAR) - 1;
}
}
EDIT_LockBuffer(es);
if (es->buffer_size < size) {
WARN("FAILED ! We now have %d+1\n", es->buffer_size);
EDIT_NOTIFY_PARENT(es, EN_ERRSPACE);
return FALSE;
} else {
TRACE("We now have %d+1\n", es->buffer_size);
return TRUE;
}
}
/*********************************************************************
*
* EDIT_MakeUndoFit
*
* Try to fit size + 1 bytes in the undo buffer.
*
*/
static BOOL EDIT_MakeUndoFit(EDITSTATE *es, UINT size)
{
UINT alloc_size;
if (size <= es->undo_buffer_size)
return TRUE;
TRACE("trying to ReAlloc to %d+1\n", size);
alloc_size = ROUND_TO_GROW((size + 1) * sizeof(WCHAR));
if ((es->undo_text = HeapReAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, es->undo_text, alloc_size))) {
es->undo_buffer_size = alloc_size/sizeof(WCHAR) - 1;
return TRUE;
}
else
{
WARN("FAILED ! We now have %d+1\n", es->undo_buffer_size);
return FALSE;
}
}
/*********************************************************************
*
* EDIT_MoveBackward
*
*/
static void EDIT_MoveBackward(EDITSTATE *es, BOOL extend)
{
INT e = es->selection_end;
if (e) {
e--;
if ((es->style & ES_MULTILINE) && e &&
(es->text[e - 1] == '\r') && (es->text[e] == '\n')) {
e--;
if (e && (es->text[e - 1] == '\r'))
e--;
}
}
EDIT_EM_SetSel(es, extend ? es->selection_start : e, e, FALSE);
EDIT_EM_ScrollCaret(es);
}
/*********************************************************************
*
* EDIT_MoveDown_ML
*
* Only for multi line controls
* Move the caret one line down, on a column with the nearest
* x coordinate on the screen (might be a different column).
*
*/
static void EDIT_MoveDown_ML(EDITSTATE *es, BOOL extend)
{
INT s = es->selection_start;
INT e = es->selection_end;
BOOL after_wrap = (es->flags & EF_AFTER_WRAP);
LRESULT pos = EDIT_EM_PosFromChar(es, e, after_wrap);
INT x = (short)LOWORD(pos);
INT y = (short)HIWORD(pos);
e = EDIT_CharFromPos(es, x, y + es->line_height, &after_wrap);
if (!extend)
s = e;
EDIT_EM_SetSel(es, s, e, after_wrap);
EDIT_EM_ScrollCaret(es);
}
/*********************************************************************
*
* EDIT_MoveEnd
*
*/
static void EDIT_MoveEnd(EDITSTATE *es, BOOL extend)
{
BOOL after_wrap = FALSE;
INT e;
/* Pass a high value in x to make sure of receiving the end of the line */
if (es->style & ES_MULTILINE)
e = EDIT_CharFromPos(es, 0x3fffffff,
HIWORD(EDIT_EM_PosFromChar(es, es->selection_end, es->flags & EF_AFTER_WRAP)), &after_wrap);
else
e = get_text_length(es);
EDIT_EM_SetSel(es, extend ? es->selection_start : e, e, after_wrap);
EDIT_EM_ScrollCaret(es);
}
/*********************************************************************
*
* EDIT_MoveForward
*
*/
static void EDIT_MoveForward(EDITSTATE *es, BOOL extend)
{
INT e = es->selection_end;
if (es->text[e]) {
e++;
if ((es->style & ES_MULTILINE) && (es->text[e - 1] == '\r')) {
if (es->text[e] == '\n')
e++;
else if ((es->text[e] == '\r') && (es->text[e + 1] == '\n'))
e += 2;
}
}
EDIT_EM_SetSel(es, extend ? es->selection_start : e, e, FALSE);
EDIT_EM_ScrollCaret(es);
}
/*********************************************************************
*
* EDIT_MoveHome
*
* Home key: move to beginning of line.
*
*/
static void EDIT_MoveHome(EDITSTATE *es, BOOL extend)
{
INT e;
/* Pass the x_offset in x to make sure of receiving the first position of the line */
if (es->style & ES_MULTILINE)
e = EDIT_CharFromPos(es, -es->x_offset,
HIWORD(EDIT_EM_PosFromChar(es, es->selection_end, es->flags & EF_AFTER_WRAP)), NULL);
else
e = 0;
EDIT_EM_SetSel(es, extend ? es->selection_start : e, e, FALSE);
EDIT_EM_ScrollCaret(es);
}
/*********************************************************************
*
* EDIT_MovePageDown_ML
*
* Only for multi line controls
* Move the caret one page down, on a column with the nearest
* x coordinate on the screen (might be a different column).
*
*/
static void EDIT_MovePageDown_ML(EDITSTATE *es, BOOL extend)
{
INT s = es->selection_start;
INT e = es->selection_end;
BOOL after_wrap = (es->flags & EF_AFTER_WRAP);
LRESULT pos = EDIT_EM_PosFromChar(es, e, after_wrap);
INT x = (short)LOWORD(pos);
INT y = (short)HIWORD(pos);
e = EDIT_CharFromPos(es, x,
y + (es->format_rect.bottom - es->format_rect.top),
&after_wrap);
if (!extend)
s = e;
EDIT_EM_SetSel(es, s, e, after_wrap);
EDIT_EM_ScrollCaret(es);
}
/*********************************************************************
*
* EDIT_MovePageUp_ML
*
* Only for multi line controls
* Move the caret one page up, on a column with the nearest
* x coordinate on the screen (might be a different column).
*
*/
static void EDIT_MovePageUp_ML(EDITSTATE *es, BOOL extend)
{
INT s = es->selection_start;
INT e = es->selection_end;
BOOL after_wrap = (es->flags & EF_AFTER_WRAP);
LRESULT pos = EDIT_EM_PosFromChar(es, e, after_wrap);
INT x = (short)LOWORD(pos);
INT y = (short)HIWORD(pos);
e = EDIT_CharFromPos(es, x,
y - (es->format_rect.bottom - es->format_rect.top),
&after_wrap);
if (!extend)
s = e;
EDIT_EM_SetSel(es, s, e, after_wrap);
EDIT_EM_ScrollCaret(es);
}
/*********************************************************************
*
* EDIT_MoveUp_ML
*
* Only for multi line controls
* Move the caret one line up, on a column with the nearest
* x coordinate on the screen (might be a different column).
*
*/
static void EDIT_MoveUp_ML(EDITSTATE *es, BOOL extend)
{
INT s = es->selection_start;
INT e = es->selection_end;
BOOL after_wrap = (es->flags & EF_AFTER_WRAP);
LRESULT pos = EDIT_EM_PosFromChar(es, e, after_wrap);
INT x = (short)LOWORD(pos);
INT y = (short)HIWORD(pos);
e = EDIT_CharFromPos(es, x, y - es->line_height, &after_wrap);
if (!extend)
s = e;
EDIT_EM_SetSel(es, s, e, after_wrap);
EDIT_EM_ScrollCaret(es);
}
/*********************************************************************
*
* EDIT_MoveWordBackward
*
*/
static void EDIT_MoveWordBackward(EDITSTATE *es, BOOL extend)
{
INT s = es->selection_start;
INT e = es->selection_end;
INT l;
INT ll;
INT li;
l = EDIT_EM_LineFromChar(es, e);
ll = EDIT_EM_LineLength(es, e);
li = EDIT_EM_LineIndex(es, l);
if (e - li == 0) {
if (l) {
li = EDIT_EM_LineIndex(es, l - 1);
e = li + EDIT_EM_LineLength(es, li);
}
} else {
e = li + EDIT_CallWordBreakProc(es, li, e - li, ll, WB_LEFT);
}
if (!extend)
s = e;
EDIT_EM_SetSel(es, s, e, FALSE);
EDIT_EM_ScrollCaret(es);
}
/*********************************************************************
*
* EDIT_MoveWordForward
*
*/
static void EDIT_MoveWordForward(EDITSTATE *es, BOOL extend)
{
INT s = es->selection_start;
INT e = es->selection_end;
INT l;
INT ll;
INT li;
l = EDIT_EM_LineFromChar(es, e);
ll = EDIT_EM_LineLength(es, e);
li = EDIT_EM_LineIndex(es, l);
if (e - li == ll) {
if ((es->style & ES_MULTILINE) && (l != es->line_count - 1))
e = EDIT_EM_LineIndex(es, l + 1);
} else {
e = li + EDIT_CallWordBreakProc(es,
li, e - li + 1, ll, WB_RIGHT);
}
if (!extend)
s = e;
EDIT_EM_SetSel(es, s, e, FALSE);
EDIT_EM_ScrollCaret(es);
}
/*********************************************************************
*
* EDIT_PaintLine
*
*/
static void EDIT_PaintLine(EDITSTATE *es, HDC dc, INT line, BOOL rev)
{
INT s = es->selection_start;
INT e = es->selection_end;
INT li;
INT ll;
INT x;
INT y;
LRESULT pos;
if (es->style & ES_MULTILINE) {
INT vlc = (es->format_rect.bottom - es->format_rect.top) / es->line_height;
if ((line < es->y_offset) || (line > es->y_offset + vlc) || (line >= es->line_count))
return;
} else if (line)
return;
TRACE("line=%d\n", line);
pos = EDIT_EM_PosFromChar(es, EDIT_EM_LineIndex(es, line), FALSE);
x = (short)LOWORD(pos);
y = (short)HIWORD(pos);
li = EDIT_EM_LineIndex(es, line);
ll = EDIT_EM_LineLength(es, li);
s = min(es->selection_start, es->selection_end);
e = max(es->selection_start, es->selection_end);
s = min(li + ll, max(li, s));
e = min(li + ll, max(li, e));
if (rev && (s != e) &&
((es->flags & EF_FOCUSED) || (es->style & ES_NOHIDESEL))) {
x += EDIT_PaintText(es, dc, x, y, line, 0, s - li, FALSE);
x += EDIT_PaintText(es, dc, x, y, line, s - li, e - s, TRUE);
x += EDIT_PaintText(es, dc, x, y, line, e - li, li + ll - e, FALSE);
} else
x += EDIT_PaintText(es, dc, x, y, line, 0, ll, FALSE);
}
/*********************************************************************
*
* EDIT_PaintText
*
*/
static INT EDIT_PaintText(EDITSTATE *es, HDC dc, INT x, INT y, INT line, INT col, INT count, BOOL rev)
{
COLORREF BkColor;
COLORREF TextColor;
LOGFONTW underline_font;
HFONT hUnderline = 0;
HFONT old_font = 0;
INT ret;
INT li;
INT BkMode;
SIZE size;
if (!count)
return 0;
BkMode = GetBkMode(dc);
BkColor = GetBkColor(dc);
TextColor = GetTextColor(dc);
if (rev) {
if (es->composition_len == 0)
{
SetBkColor(dc, GetSysColor(COLOR_HIGHLIGHT));
SetTextColor(dc, GetSysColor(COLOR_HIGHLIGHTTEXT));
SetBkMode( dc, OPAQUE);
}
else
{
HFONT current = GetCurrentObject(dc,OBJ_FONT);
GetObjectW(current,sizeof(LOGFONTW),&underline_font);
underline_font.lfUnderline = TRUE;
hUnderline = CreateFontIndirectW(&underline_font);
old_font = SelectObject(dc,hUnderline);
}
}
li = EDIT_EM_LineIndex(es, line);
if (es->style & ES_MULTILINE) {
ret = (INT)LOWORD(TabbedTextOutW(dc, x, y, es->text + li + col, count,
es->tabs_count, es->tabs, es->format_rect.left - es->x_offset));
} else {
LPWSTR text = EDIT_GetPasswordPointer_SL(es);
TextOutW(dc, x, y, text + li + col, count);
GetTextExtentPoint32W(dc, text + li + col, count, &size);
ret = size.cx;
if (es->style & ES_PASSWORD)
HeapFree(GetProcessHeap(), 0, text);
}
if (rev) {
if (es->composition_len == 0)
{
SetBkColor(dc, BkColor);
SetTextColor(dc, TextColor);
SetBkMode( dc, BkMode);
}
else
{
if (old_font)
SelectObject(dc,old_font);
if (hUnderline)
DeleteObject(hUnderline);
}
}
return ret;
}
/*********************************************************************
*
* EDIT_SetCaretPos
*
*/
static void EDIT_SetCaretPos(EDITSTATE *es, INT pos,
BOOL after_wrap)
{
LRESULT res = EDIT_EM_PosFromChar(es, pos, after_wrap);
TRACE("%d - %dx%d\n", pos, (short)LOWORD(res), (short)HIWORD(res));
SetCaretPos((short)LOWORD(res), (short)HIWORD(res));
}
/*********************************************************************
*
* EDIT_AdjustFormatRect
*
* Adjusts the format rectangle for the current font and the
* current client rectangle.
*
*/
static void EDIT_AdjustFormatRect(EDITSTATE *es)
{
RECT ClientRect;
es->format_rect.right = max(es->format_rect.right, es->format_rect.left + es->char_width);
if (es->style & ES_MULTILINE)
{
INT fw, vlc, max_x_offset, max_y_offset;
vlc = (es->format_rect.bottom - es->format_rect.top) / es->line_height;
es->format_rect.bottom = es->format_rect.top + max(1, vlc) * es->line_height;
/* correct es->x_offset */
fw = es->format_rect.right - es->format_rect.left;
max_x_offset = es->text_width - fw;
if(max_x_offset < 0) max_x_offset = 0;
if(es->x_offset > max_x_offset)
es->x_offset = max_x_offset;
/* correct es->y_offset */
max_y_offset = es->line_count - vlc;
if(max_y_offset < 0) max_y_offset = 0;
if(es->y_offset > max_y_offset)
es->y_offset = max_y_offset;
/* force scroll info update */
EDIT_UpdateScrollInfo(es);
}
else
/* Windows doesn't care to fix text placement for SL controls */
es->format_rect.bottom = es->format_rect.top + es->line_height;
/* Always stay within the client area */
GetClientRect(es->hwndSelf, &ClientRect);
es->format_rect.bottom = min(es->format_rect.bottom, ClientRect.bottom);
if ((es->style & ES_MULTILINE) && !(es->style & ES_AUTOHSCROLL))
EDIT_BuildLineDefs_ML(es, 0, get_text_length(es), 0, NULL);
EDIT_SetCaretPos(es, es->selection_end, es->flags & EF_AFTER_WRAP);
}
/*********************************************************************
*
* EDIT_SetRectNP
*
* note: this is not (exactly) the handler called on EM_SETRECTNP
* it is also used to set the rect of a single line control
*
*/
static void EDIT_SetRectNP(EDITSTATE *es, const RECT *rc)
{
LONG_PTR ExStyle;
INT bw, bh;
ExStyle = GetWindowLongPtrW(es->hwndSelf, GWL_EXSTYLE);
CopyRect(&es->format_rect, rc);
if (ExStyle & WS_EX_CLIENTEDGE) {
es->format_rect.left++;
es->format_rect.right--;
if (es->format_rect.bottom - es->format_rect.top
>= es->line_height + 2)
{
es->format_rect.top++;
es->format_rect.bottom--;
}
}
else if (es->style & WS_BORDER) {
bw = GetSystemMetrics(SM_CXBORDER) + 1;
bh = GetSystemMetrics(SM_CYBORDER) + 1;
es->format_rect.left += bw;
es->format_rect.right -= bw;
if (es->format_rect.bottom - es->format_rect.top
>= es->line_height + 2 * bh)
{
es->format_rect.top += bh;
es->format_rect.bottom -= bh;
}
}
es->format_rect.left += es->left_margin;
es->format_rect.right -= es->right_margin;
EDIT_AdjustFormatRect(es);
}
/*********************************************************************
*
* EDIT_UnlockBuffer
*
*/
static void EDIT_UnlockBuffer(EDITSTATE *es, BOOL force)
{
/* Edit window might be already destroyed */
if(!IsWindow(es->hwndSelf))
{
WARN("edit hwnd %p already destroyed\n", es->hwndSelf);
return;
}
if (!es->lock_count) {
ERR("lock_count == 0 ... please report\n");
return;
}
if (!es->text) {
ERR("es->text == 0 ... please report\n");
return;
}
if (force || (es->lock_count == 1)) {
if (es->hloc32W) {
CHAR *textA = NULL;
UINT countA = 0;
UINT countW = get_text_length(es) + 1;
STACK16FRAME* stack16 = NULL;
HANDLE16 oldDS = 0;
if(es->hloc32A)
{
UINT countA_new = WideCharToMultiByte(CP_ACP, 0, es->text, countW, NULL, 0, NULL, NULL);
TRACE("Synchronizing with 32-bit ANSI buffer\n");
TRACE("%d WCHARs translated to %d bytes\n", countW, countA_new);
countA = LocalSize(es->hloc32A);
if(countA_new > countA)
{
HLOCAL hloc32A_new;
UINT alloc_size = ROUND_TO_GROW(countA_new);
TRACE("Resizing 32-bit ANSI buffer from %d to %d bytes\n", countA, alloc_size);
hloc32A_new = LocalReAlloc(es->hloc32A, alloc_size, LMEM_MOVEABLE | LMEM_ZEROINIT);
if(hloc32A_new)
{
es->hloc32A = hloc32A_new;
countA = LocalSize(hloc32A_new);
TRACE("Real new size %d bytes\n", countA);
}
else
WARN("FAILED! Will synchronize partially\n");
}
textA = LocalLock(es->hloc32A);
}
else if(es->hloc16)
{
UINT countA_new = WideCharToMultiByte(CP_ACP, 0, es->text, countW, NULL, 0, NULL, NULL);
TRACE("Synchronizing with 16-bit ANSI buffer\n");
TRACE("%d WCHARs translated to %d bytes\n", countW, countA_new);
stack16 = MapSL(PtrToUlong(NtCurrentTeb()->WOW32Reserved));
oldDS = stack16->ds;
stack16->ds = GetWindowLongPtrW( es->hwndSelf, GWLP_HINSTANCE );
countA = LocalSize16(es->hloc16);
if(countA_new > countA)
{
HLOCAL16 hloc16_new;
UINT alloc_size = ROUND_TO_GROW(countA_new);
TRACE("Resizing 16-bit ANSI buffer from %d to %d bytes\n", countA, alloc_size);
hloc16_new = LocalReAlloc16(es->hloc16, alloc_size, LMEM_MOVEABLE | LMEM_ZEROINIT);
if(hloc16_new)
{
es->hloc16 = hloc16_new;
countA = LocalSize16(hloc16_new);
TRACE("Real new size %d bytes\n", countA);
}
else
WARN("FAILED! Will synchronize partially\n");
}
textA = MapSL(LocalLock16(es->hloc16));
}
if(textA)
{
WideCharToMultiByte(CP_ACP, 0, es->text, countW, textA, countA, NULL, NULL);
if(stack16)
LocalUnlock16(es->hloc16);
else
LocalUnlock(es->hloc32A);
}
if (stack16) stack16->ds = oldDS;
LocalUnlock(es->hloc32W);
es->text = NULL;
}
else {
ERR("no buffer ... please report\n");
return;
}
}
es->lock_count--;
}
/*********************************************************************
*
* EDIT_UpdateScrollInfo
*
*/
static void EDIT_UpdateScrollInfo(EDITSTATE *es)
{
if ((es->style & WS_VSCROLL) && !(es->flags & EF_VSCROLL_TRACK))
{
SCROLLINFO si;
si.cbSize = sizeof(SCROLLINFO);
si.fMask = SIF_PAGE | SIF_POS | SIF_RANGE | SIF_DISABLENOSCROLL;
si.nMin = 0;
si.nMax = es->line_count - 1;
si.nPage = (es->format_rect.bottom - es->format_rect.top) / es->line_height;
si.nPos = es->y_offset;
TRACE("SB_VERT, nMin=%d, nMax=%d, nPage=%d, nPos=%d\n",
si.nMin, si.nMax, si.nPage, si.nPos);
SetScrollInfo(es->hwndSelf, SB_VERT, &si, TRUE);
}
if ((es->style & WS_HSCROLL) && !(es->flags & EF_HSCROLL_TRACK))
{
SCROLLINFO si;
si.cbSize = sizeof(SCROLLINFO);
si.fMask = SIF_PAGE | SIF_POS | SIF_RANGE | SIF_DISABLENOSCROLL;
si.nMin = 0;
si.nMax = es->text_width - 1;
si.nPage = es->format_rect.right - es->format_rect.left;
si.nPos = es->x_offset;
TRACE("SB_HORZ, nMin=%d, nMax=%d, nPage=%d, nPos=%d\n",
si.nMin, si.nMax, si.nPage, si.nPos);
SetScrollInfo(es->hwndSelf, SB_HORZ, &si, TRUE);
}
}
/*********************************************************************
*
* EDIT_WordBreakProc
*
* Find the beginning of words.
* Note: unlike the specs for a WordBreakProc, this function only
* allows to be called without linebreaks between s[0] up to
* s[count - 1]. Remember it is only called
* internally, so we can decide this for ourselves.
*
*/
static INT CALLBACK EDIT_WordBreakProc(LPWSTR s, INT index, INT count, INT action)
{
INT ret = 0;
TRACE("s=%p, index=%d, count=%d, action=%d\n", s, index, count, action);
if(!s) return 0;
switch (action) {
case WB_LEFT:
if (!count)
break;
if (index)
index--;
if (s[index] == ' ') {
while (index && (s[index] == ' '))
index--;
if (index) {
while (index && (s[index] != ' '))
index--;
if (s[index] == ' ')
index++;
}
} else {
while (index && (s[index] != ' '))
index--;
if (s[index] == ' ')
index++;
}
ret = index;
break;
case WB_RIGHT:
if (!count)
break;
if (index)
index--;
if (s[index] == ' ')
while ((index < count) && (s[index] == ' ')) index++;
else {
while (s[index] && (s[index] != ' ') && (index < count))
index++;
while ((s[index] == ' ') && (index < count)) index++;
}
ret = index;
break;
case WB_ISDELIMITER:
ret = (s[index] == ' ');
break;
default:
ERR("unknown action code, please report !\n");
break;
}
return ret;
}
/*********************************************************************
*
* EM_CHARFROMPOS
*
* returns line number (not index) in high-order word of result.
* NB : Q137805 is unclear about this. POINT * pointer in lParam apply
* to Richedit, not to the edit control. Original documentation is valid.
* FIXME: do the specs mean to return -1 if outside client area or
* if outside formatting rectangle ???
*
*/
static LRESULT EDIT_EM_CharFromPos(EDITSTATE *es, INT x, INT y)
{
POINT pt;
RECT rc;
INT index;
pt.x = x;
pt.y = y;
GetClientRect(es->hwndSelf, &rc);
if (!PtInRect(&rc, pt))
return -1;
index = EDIT_CharFromPos(es, x, y, NULL);
return MAKELONG(index, EDIT_EM_LineFromChar(es, index));
}
/*********************************************************************
*
* EM_FMTLINES
*
* Enable or disable soft breaks.
*
* This means: insert or remove the soft linebreak character (\r\r\n).
* Take care to check if the text still fits the buffer after insertion.
* If not, notify with EN_ERRSPACE.
*
*/
static BOOL EDIT_EM_FmtLines(EDITSTATE *es, BOOL add_eol)
{
es->flags &= ~EF_USE_SOFTBRK;
if (add_eol) {
es->flags |= EF_USE_SOFTBRK;
FIXME("soft break enabled, not implemented\n");
}
return add_eol;
}
/*********************************************************************
*
* EM_GETHANDLE
*
* Hopefully this won't fire back at us.
* We always start with a fixed buffer in the local heap.
* Despite of the documentation says that the local heap is used
* only if DS_LOCALEDIT flag is set, NT and 2000 always allocate
* buffer on the local heap.
*
*/
static HLOCAL EDIT_EM_GetHandle(EDITSTATE *es)
{
HLOCAL hLocal;
if (!(es->style & ES_MULTILINE))
return 0;
if(es->is_unicode)
hLocal = es->hloc32W;
else
{
if(!es->hloc32A)
{
CHAR *textA;
UINT countA, alloc_size;
TRACE("Allocating 32-bit ANSI alias buffer\n");
countA = WideCharToMultiByte(CP_ACP, 0, es->text, -1, NULL, 0, NULL, NULL);
alloc_size = ROUND_TO_GROW(countA);
if(!(es->hloc32A = LocalAlloc(LMEM_MOVEABLE | LMEM_ZEROINIT, alloc_size)))
{
ERR("Could not allocate %d bytes for 32-bit ANSI alias buffer\n", alloc_size);
return 0;
}
textA = LocalLock(es->hloc32A);
WideCharToMultiByte(CP_ACP, 0, es->text, -1, textA, countA, NULL, NULL);
LocalUnlock(es->hloc32A);
}
hLocal = es->hloc32A;
}
es->flags |= EF_APP_HAS_HANDLE;
TRACE("Returning %p, LocalSize() = %ld\n", hLocal, LocalSize(hLocal));
return hLocal;
}
/*********************************************************************
*
* EM_GETHANDLE16
*
* Hopefully this won't fire back at us.
* We always start with a buffer in 32 bit linear memory.
* However, with this message a 16 bit application requests
* a handle of 16 bit local heap memory, where it expects to find
* the text.
* It's a pitty that from this moment on we have to use this
* local heap, because applications may rely on the handle
* in the future.
*
* In this function we'll try to switch to local heap.
*/
static HLOCAL16 EDIT_EM_GetHandle16(EDITSTATE *es)
{
CHAR *textA;
UINT countA, alloc_size;
STACK16FRAME* stack16;
HANDLE16 oldDS;
if (!(es->style & ES_MULTILINE))
return 0;
if (es->hloc16)
return es->hloc16;
stack16 = MapSL(PtrToUlong(NtCurrentTeb()->WOW32Reserved));
oldDS = stack16->ds;
stack16->ds = GetWindowLongPtrW( es->hwndSelf, GWLP_HINSTANCE );
if (!LocalHeapSize16()) {
if (!LocalInit16(stack16->ds, 0, GlobalSize16(stack16->ds))) {
ERR("could not initialize local heap\n");
goto done;
}
TRACE("local heap initialized\n");
}
countA = WideCharToMultiByte(CP_ACP, 0, es->text, -1, NULL, 0, NULL, NULL);
alloc_size = ROUND_TO_GROW(countA);
TRACE("Allocating 16-bit ANSI alias buffer\n");
if (!(es->hloc16 = LocalAlloc16(LMEM_MOVEABLE | LMEM_ZEROINIT, alloc_size))) {
ERR("could not allocate new 16 bit buffer\n");
goto done;
}
if (!(textA = MapSL(LocalLock16( es->hloc16)))) {
ERR("could not lock new 16 bit buffer\n");
LocalFree16(es->hloc16);
es->hloc16 = 0;
goto done;
}
WideCharToMultiByte(CP_ACP, 0, es->text, -1, textA, countA, NULL, NULL);
LocalUnlock16(es->hloc16);
es->flags |= EF_APP_HAS_HANDLE;
TRACE("Returning %04X, LocalSize() = %d\n", es->hloc16, LocalSize16(es->hloc16));
done:
stack16->ds = oldDS;
return es->hloc16;
}
/*********************************************************************
*
* EM_GETLINE
*
*/
static INT EDIT_EM_GetLine(EDITSTATE *es, INT line, LPWSTR dst, BOOL unicode)
{
LPWSTR src;
INT line_len, dst_len;
INT i;
if (es->style & ES_MULTILINE) {
if (line >= es->line_count)
return 0;
} else
line = 0;
i = EDIT_EM_LineIndex(es, line);
src = es->text + i;
line_len = EDIT_EM_LineLength(es, i);
dst_len = *(WORD *)dst;
if(unicode)
{
if(dst_len <= line_len)
{
memcpy(dst, src, dst_len * sizeof(WCHAR));
return dst_len;
}
else /* Append 0 if enough space */
{
memcpy(dst, src, line_len * sizeof(WCHAR));
dst[line_len] = 0;
return line_len;
}
}
else
{
INT ret = WideCharToMultiByte(CP_ACP, 0, src, line_len, (LPSTR)dst, dst_len, NULL, NULL);
if(!ret && line_len) /* Insufficient buffer size */
return dst_len;
if(ret < dst_len) /* Append 0 if enough space */
((LPSTR)dst)[ret] = 0;
return ret;
}
}
/*********************************************************************
*
* EM_GETSEL
*
*/
static LRESULT EDIT_EM_GetSel(const EDITSTATE *es, PUINT start, PUINT end)
{
UINT s = es->selection_start;
UINT e = es->selection_end;
ORDER_UINT(s, e);
if (start)
*start = s;
if (end)
*end = e;
return MAKELONG(s, e);
}
/*********************************************************************
*
* EM_GETTHUMB
*
* FIXME: is this right ? (or should it be only VSCROLL)
* (and maybe only for edit controls that really have their
* own scrollbars) (and maybe only for multiline controls ?)
* All in all: very poorly documented
*
*/
static LRESULT EDIT_EM_GetThumb(EDITSTATE *es)
{
return MAKELONG(EDIT_WM_VScroll(es, EM_GETTHUMB16, 0),
EDIT_WM_HScroll(es, EM_GETTHUMB16, 0));
}
/*********************************************************************
*
* EM_LINEFROMCHAR
*
*/
static INT EDIT_EM_LineFromChar(EDITSTATE *es, INT index)
{
INT line;
LINEDEF *line_def;
if (!(es->style & ES_MULTILINE))
return 0;
if (index > (INT)get_text_length(es))
return es->line_count - 1;
if (index == -1)
index = min(es->selection_start, es->selection_end);
line = 0;
line_def = es->first_line_def;
index -= line_def->length;
while ((index >= 0) && line_def->next) {
line++;
line_def = line_def->next;
index -= line_def->length;
}
return line;
}
/*********************************************************************
*
* EM_LINEINDEX
*
*/
static INT EDIT_EM_LineIndex(const EDITSTATE *es, INT line)
{
INT line_index;
const LINEDEF *line_def;
if (!(es->style & ES_MULTILINE))
return 0;
if (line >= es->line_count)
return -1;
line_index = 0;
line_def = es->first_line_def;
if (line == -1) {
INT index = es->selection_end - line_def->length;
while ((index >= 0) && line_def->next) {
line_index += line_def->length;
line_def = line_def->next;
index -= line_def->length;
}
} else {
while (line > 0) {
line_index += line_def->length;
line_def = line_def->next;
line--;
}
}
return line_index;
}
/*********************************************************************
*
* EM_LINELENGTH
*
*/
static INT EDIT_EM_LineLength(EDITSTATE *es, INT index)
{
LINEDEF *line_def;
if (!(es->style & ES_MULTILINE))
return get_text_length(es);
if (index == -1) {
/* get the number of remaining non-selected chars of selected lines */
INT32 l; /* line number */
INT32 li; /* index of first char in line */
INT32 count;
l = EDIT_EM_LineFromChar(es, es->selection_start);
/* # chars before start of selection area */
count = es->selection_start - EDIT_EM_LineIndex(es, l);
l = EDIT_EM_LineFromChar(es, es->selection_end);
/* # chars after end of selection */
li = EDIT_EM_LineIndex(es, l);
count += li + EDIT_EM_LineLength(es, li) - es->selection_end;
return count;
}
line_def = es->first_line_def;
index -= line_def->length;
while ((index >= 0) && line_def->next) {
line_def = line_def->next;
index -= line_def->length;
}
return line_def->net_length;
}
/*********************************************************************
*
* EM_LINESCROLL
*
* NOTE: dx is in average character widths, dy - in lines;
*
*/
static BOOL EDIT_EM_LineScroll(EDITSTATE *es, INT dx, INT dy)
{
if (!(es->style & ES_MULTILINE))
return FALSE;
dx *= es->char_width;
return EDIT_EM_LineScroll_internal(es, dx, dy);
}
/*********************************************************************
*
* EDIT_EM_LineScroll_internal
*
* Version of EDIT_EM_LineScroll for internal use.
* It doesn't refuse if ES_MULTILINE is set and assumes that
* dx is in pixels, dy - in lines.
*
*/
static BOOL EDIT_EM_LineScroll_internal(EDITSTATE *es, INT dx, INT dy)
{
INT nyoff;
INT x_offset_in_pixels;
INT lines_per_page = (es->format_rect.bottom - es->format_rect.top) /
es->line_height;
if (es->style & ES_MULTILINE)
{
x_offset_in_pixels = es->x_offset;
}
else
{
dy = 0;
x_offset_in_pixels = (short)LOWORD(EDIT_EM_PosFromChar(es, es->x_offset, FALSE));
}
if (-dx > x_offset_in_pixels)
dx = -x_offset_in_pixels;
if (dx > es->text_width - x_offset_in_pixels)
dx = es->text_width - x_offset_in_pixels;
nyoff = max(0, es->y_offset + dy);
if (nyoff >= es->line_count - lines_per_page)
nyoff = max(0, es->line_count - lines_per_page);
dy = (es->y_offset - nyoff) * es->line_height;
if (dx || dy) {
RECT rc1;
RECT rc;
es->y_offset = nyoff;
if(es->style & ES_MULTILINE)
es->x_offset += dx;
else
es->x_offset += dx / es->char_width;
GetClientRect(es->hwndSelf, &rc1);
IntersectRect(&rc, &rc1, &es->format_rect);
ScrollWindowEx(es->hwndSelf, -dx, dy,
NULL, &rc, NULL, NULL, SW_INVALIDATE);
/* force scroll info update */
EDIT_UpdateScrollInfo(es);
}
if (dx && !(es->flags & EF_HSCROLL_TRACK))
EDIT_NOTIFY_PARENT(es, EN_HSCROLL);
if (dy && !(es->flags & EF_VSCROLL_TRACK))
EDIT_NOTIFY_PARENT(es, EN_VSCROLL);
return TRUE;
}
/*********************************************************************
*
* EM_POSFROMCHAR
*
*/
static LRESULT EDIT_EM_PosFromChar(EDITSTATE *es, INT index, BOOL after_wrap)
{
INT len = get_text_length(es);
INT l;
INT li;
INT x;
INT y = 0;
INT w;
INT lw = 0;
INT ll = 0;
HDC dc;
HFONT old_font = 0;
SIZE size;
LINEDEF *line_def;
index = min(index, len);
dc = GetDC(es->hwndSelf);
if (es->font)
old_font = SelectObject(dc, es->font);
if (es->style & ES_MULTILINE) {
l = EDIT_EM_LineFromChar(es, index);
y = (l - es->y_offset) * es->line_height;
li = EDIT_EM_LineIndex(es, l);
if (after_wrap && (li == index) && l) {
INT l2 = l - 1;
line_def = es->first_line_def;
while (l2) {
line_def = line_def->next;
l2--;
}
if (line_def->ending == END_WRAP) {
l--;
y -= es->line_height;
li = EDIT_EM_LineIndex(es, l);
}
}
line_def = es->first_line_def;
while (line_def->index != li)
line_def = line_def->next;
ll = line_def->net_length;
lw = line_def->width;
w = es->format_rect.right - es->format_rect.left;
if (es->style & ES_RIGHT)
{
x = LOWORD(GetTabbedTextExtentW(dc, es->text + li + (index - li), ll - (index - li),
es->tabs_count, es->tabs)) - es->x_offset;
x = w - x;
}
else if (es->style & ES_CENTER)
{
x = LOWORD(GetTabbedTextExtentW(dc, es->text + li, index - li,
es->tabs_count, es->tabs)) - es->x_offset;
x += (w - lw) / 2;
}
else /* ES_LEFT */
{
x = LOWORD(GetTabbedTextExtentW(dc, es->text + li, index - li,
es->tabs_count, es->tabs)) - es->x_offset;
}
} else {
LPWSTR text = EDIT_GetPasswordPointer_SL(es);
if (index < es->x_offset) {
GetTextExtentPoint32W(dc, text + index,
es->x_offset - index, &size);
x = -size.cx;
} else {
GetTextExtentPoint32W(dc, text + es->x_offset,
index - es->x_offset, &size);
x = size.cx;
if (!es->x_offset && (es->style & (ES_RIGHT | ES_CENTER)))
{
w = es->format_rect.right - es->format_rect.left;
if (w > es->text_width)
{
if (es->style & ES_RIGHT)
x += w - es->text_width;
else if (es->style & ES_CENTER)
x += (w - es->text_width) / 2;
}
}
}
y = 0;
if (es->style & ES_PASSWORD)
HeapFree(GetProcessHeap(), 0, text);
}
x += es->format_rect.left;
y += es->format_rect.top;
if (es->font)
SelectObject(dc, old_font);
ReleaseDC(es->hwndSelf, dc);
return MAKELONG((INT16)x, (INT16)y);
}
/*********************************************************************
*
* EM_REPLACESEL
*
* FIXME: handle ES_NUMBER and ES_OEMCONVERT here
*
*/
static void EDIT_EM_ReplaceSel(EDITSTATE *es, BOOL can_undo, LPCWSTR lpsz_replace, BOOL send_update, BOOL honor_limit)
{
UINT strl = strlenW(lpsz_replace);
UINT tl = get_text_length(es);
UINT utl;
UINT s;
UINT e;
UINT i;
UINT size;
LPWSTR p;
HRGN hrgn = 0;
LPWSTR buf = NULL;
UINT bufl = 0;
TRACE("%s, can_undo %d, send_update %d\n",
debugstr_w(lpsz_replace), can_undo, send_update);
s = es->selection_start;
e = es->selection_end;
if ((s == e) && !strl)
return;
ORDER_UINT(s, e);
size = tl - (e - s) + strl;
if (!size)
es->text_width = 0;
/* Issue the EN_MAXTEXT notification and continue with replacing text
* such that buffer limit is honored. */
if ((honor_limit) && (size > es->buffer_limit)) {
EDIT_NOTIFY_PARENT(es, EN_MAXTEXT);
/* Buffer limit can be smaller than the actual length of text in combobox */
if (es->buffer_limit < (tl - (e-s)))
strl = 0;
else
strl = es->buffer_limit - (tl - (e-s));
}
if (!EDIT_MakeFit(es, tl - (e - s) + strl))
return;
if (e != s) {
/* there is something to be deleted */
TRACE("deleting stuff.\n");
bufl = e - s;
buf = HeapAlloc(GetProcessHeap(), 0, (bufl + 1) * sizeof(WCHAR));
if (!buf) return;
memcpy(buf, es->text + s, bufl * sizeof(WCHAR));
buf[bufl] = 0; /* ensure 0 termination */
/* now delete */
strcpyW(es->text + s, es->text + e);
text_buffer_changed(es);
}
if (strl) {
/* there is an insertion */
tl = get_text_length(es);
TRACE("inserting stuff (tl %d, strl %d, selstart %d (%s), text %s)\n", tl, strl, s, debugstr_w(es->text + s), debugstr_w(es->text));
for (p = es->text + tl ; p >= es->text + s ; p--)
p[strl] = p[0];
for (i = 0 , p = es->text + s ; i < strl ; i++)
p[i] = lpsz_replace[i];
if(es->style & ES_UPPERCASE)
CharUpperBuffW(p, strl);
else if(es->style & ES_LOWERCASE)
CharLowerBuffW(p, strl);
text_buffer_changed(es);
}
if (es->style & ES_MULTILINE)
{
INT st = min(es->selection_start, es->selection_end);
INT vlc = (es->format_rect.bottom - es->format_rect.top) / es->line_height;
hrgn = CreateRectRgn(0, 0, 0, 0);
EDIT_BuildLineDefs_ML(es, st, st + strl,
strl - abs(es->selection_end - es->selection_start), hrgn);
/* if text is too long undo all changes */
if (honor_limit && !(es->style & ES_AUTOVSCROLL) && (es->line_count > vlc)) {
if (strl)
strcpyW(es->text + e, es->text + e + strl);
if (e != s)
for (i = 0 , p = es->text ; i < e - s ; i++)
p[i + s] = buf[i];
text_buffer_changed(es);
EDIT_BuildLineDefs_ML(es, s, e,
abs(es->selection_end - es->selection_start) - strl, hrgn);
strl = 0;
e = s;
hrgn = CreateRectRgn(0, 0, 0, 0);
EDIT_NOTIFY_PARENT(es, EN_MAXTEXT);
}
}
else {
INT fw = es->format_rect.right - es->format_rect.left;
EDIT_CalcLineWidth_SL(es);
/* remove chars that don't fit */
if (honor_limit && !(es->style & ES_AUTOHSCROLL) && (es->text_width > fw)) {
while ((es->text_width > fw) && s + strl >= s) {
strcpyW(es->text + s + strl - 1, es->text + s + strl);
strl--;
EDIT_CalcLineWidth_SL(es);
}
text_buffer_changed(es);
EDIT_NOTIFY_PARENT(es, EN_MAXTEXT);
}
}
if (e != s) {
if (can_undo) {
utl = strlenW(es->undo_text);
if (!es->undo_insert_count && (*es->undo_text && (s == es->undo_position))) {
/* undo-buffer is extended to the right */
EDIT_MakeUndoFit(es, utl + e - s);
memcpy(es->undo_text + utl, buf, (e - s)*sizeof(WCHAR));
(es->undo_text + utl)[e - s] = 0; /* ensure 0 termination */
} else if (!es->undo_insert_count && (*es->undo_text && (e == es->undo_position))) {
/* undo-buffer is extended to the left */
EDIT_MakeUndoFit(es, utl + e - s);
for (p = es->undo_text + utl ; p >= es->undo_text ; p--)
p[e - s] = p[0];
for (i = 0 , p = es->undo_text ; i < e - s ; i++)
p[i] = buf[i];
es->undo_position = s;
} else {
/* new undo-buffer */
EDIT_MakeUndoFit(es, e - s);
memcpy(es->undo_text, buf, (e - s)*sizeof(WCHAR));
es->undo_text[e - s] = 0; /* ensure 0 termination */
es->undo_position = s;
}
/* any deletion makes the old insertion-undo invalid */
es->undo_insert_count = 0;
} else
EDIT_EM_EmptyUndoBuffer(es);
}
if (strl) {
if (can_undo) {
if ((s == es->undo_position) ||
((es->undo_insert_count) &&
(s == es->undo_position + es->undo_insert_count)))
/*
* insertion is new and at delete position or
* an extension to either left or right
*/
es->undo_insert_count += strl;
else {
/* new insertion undo */
es->undo_position = s;
es->undo_insert_count = strl;
/* new insertion makes old delete-buffer invalid */
*es->undo_text = '\0';
}
} else
EDIT_EM_EmptyUndoBuffer(es);
}
if (bufl)
HeapFree(GetProcessHeap(), 0, buf);
s += strl;
/* If text has been deleted and we're right or center aligned then scroll rightward */
if (es->style & (ES_RIGHT | ES_CENTER))
{
INT delta = strl - abs(es->selection_end - es->selection_start);
if (delta < 0 && es->x_offset)
{
if (abs(delta) > es->x_offset)
es->x_offset = 0;
else
es->x_offset += delta;
}
}
EDIT_EM_SetSel(es, s, s, FALSE);
es->flags |= EF_MODIFIED;
if (send_update) es->flags |= EF_UPDATE;
if (hrgn)
{
EDIT_UpdateTextRegion(es, hrgn, TRUE);
DeleteObject(hrgn);
}
else
EDIT_UpdateText(es, NULL, TRUE);
EDIT_EM_ScrollCaret(es);
/* force scroll info update */
EDIT_UpdateScrollInfo(es);
if(send_update || (es->flags & EF_UPDATE))
{
es->flags &= ~EF_UPDATE;
EDIT_NOTIFY_PARENT(es, EN_CHANGE);
}
}
/*********************************************************************
*
* EM_SCROLL
*
*/
static LRESULT EDIT_EM_Scroll(EDITSTATE *es, INT action)
{
INT dy;
if (!(es->style & ES_MULTILINE))
return (LRESULT)FALSE;
dy = 0;
switch (action) {
case SB_LINEUP:
if (es->y_offset)
dy = -1;
break;
case SB_LINEDOWN:
if (es->y_offset < es->line_count - 1)
dy = 1;
break;
case SB_PAGEUP:
if (es->y_offset)
dy = -(es->format_rect.bottom - es->format_rect.top) / es->line_height;
break;
case SB_PAGEDOWN:
if (es->y_offset < es->line_count - 1)
dy = (es->format_rect.bottom - es->format_rect.top) / es->line_height;
break;
default:
return (LRESULT)FALSE;
}
if (dy) {
INT vlc = (es->format_rect.bottom - es->format_rect.top) / es->line_height;
/* check if we are going to move too far */
if(es->y_offset + dy > es->line_count - vlc)
dy = es->line_count - vlc - es->y_offset;
/* Notification is done in EDIT_EM_LineScroll */
if(dy)
EDIT_EM_LineScroll(es, 0, dy);
}
return MAKELONG((INT16)dy, (BOOL16)TRUE);
}
/*********************************************************************
*
* EM_SCROLLCARET
*
*/
static void EDIT_EM_ScrollCaret(EDITSTATE *es)
{
if (es->style & ES_MULTILINE) {
INT l;
INT li;
INT vlc;
INT ww;
INT cw = es->char_width;
INT x;
INT dy = 0;
INT dx = 0;
l = EDIT_EM_LineFromChar(es, es->selection_end);
li = EDIT_EM_LineIndex(es, l);
x = (short)LOWORD(EDIT_EM_PosFromChar(es, es->selection_end, es->flags & EF_AFTER_WRAP));
vlc = (es->format_rect.bottom - es->format_rect.top) / es->line_height;
if (l >= es->y_offset + vlc)
dy = l - vlc + 1 - es->y_offset;
if (l < es->y_offset)
dy = l - es->y_offset;
ww = es->format_rect.right - es->format_rect.left;
if (x < es->format_rect.left)
dx = x - es->format_rect.left - ww / HSCROLL_FRACTION / cw * cw;
if (x > es->format_rect.right)
dx = x - es->format_rect.left - (HSCROLL_FRACTION - 1) * ww / HSCROLL_FRACTION / cw * cw;
if (dy || dx || (es->y_offset && (es->line_count - es->y_offset < vlc)))
{
/* check if we are going to move too far */
if(es->x_offset + dx + ww > es->text_width)
dx = es->text_width - ww - es->x_offset;
if(dx || dy || (es->y_offset && (es->line_count - es->y_offset < vlc)))
EDIT_EM_LineScroll_internal(es, dx, dy);
}
} else {
INT x;
INT goal;
INT format_width;
x = (short)LOWORD(EDIT_EM_PosFromChar(es, es->selection_end, FALSE));
format_width = es->format_rect.right - es->format_rect.left;
if (x < es->format_rect.left) {
goal = es->format_rect.left + format_width / HSCROLL_FRACTION;
do {
es->x_offset--;
x = (short)LOWORD(EDIT_EM_PosFromChar(es, es->selection_end, FALSE));
} while ((x < goal) && es->x_offset);
/* FIXME: use ScrollWindow() somehow to improve performance */
EDIT_UpdateText(es, NULL, TRUE);
} else if (x > es->format_rect.right) {
INT x_last;
INT len = get_text_length(es);
goal = es->format_rect.right - format_width / HSCROLL_FRACTION;
do {
es->x_offset++;
x = (short)LOWORD(EDIT_EM_PosFromChar(es, es->selection_end, FALSE));
x_last = (short)LOWORD(EDIT_EM_PosFromChar(es, len, FALSE));
} while ((x > goal) && (x_last > es->format_rect.right));
/* FIXME: use ScrollWindow() somehow to improve performance */
EDIT_UpdateText(es, NULL, TRUE);
}
}
if(es->flags & EF_FOCUSED)
EDIT_SetCaretPos(es, es->selection_end, es->flags & EF_AFTER_WRAP);
}
/*********************************************************************
*
* EM_SETHANDLE
*
* FIXME: ES_LOWERCASE, ES_UPPERCASE, ES_OEMCONVERT, ES_NUMBER ???
*
*/
static void EDIT_EM_SetHandle(EDITSTATE *es, HLOCAL hloc)
{
if (!(es->style & ES_MULTILINE))
return;
if (!hloc) {
WARN("called with NULL handle\n");
return;
}
EDIT_UnlockBuffer(es, TRUE);
if(es->hloc16)
{
STACK16FRAME* stack16 = MapSL(PtrToUlong(NtCurrentTeb()->WOW32Reserved));
HANDLE16 oldDS = stack16->ds;
stack16->ds = GetWindowLongPtrW( es->hwndSelf, GWLP_HINSTANCE );
LocalFree16(es->hloc16);
stack16->ds = oldDS;
es->hloc16 = 0;
}
if(es->is_unicode)
{
if(es->hloc32A)
{
LocalFree(es->hloc32A);
es->hloc32A = NULL;
}
es->hloc32W = hloc;
}
else
{
INT countW, countA;
HLOCAL hloc32W_new;
WCHAR *textW;
CHAR *textA;
countA = LocalSize(hloc);
textA = LocalLock(hloc);
countW = MultiByteToWideChar(CP_ACP, 0, textA, countA, NULL, 0);
if(!(hloc32W_new = LocalAlloc(LMEM_MOVEABLE | LMEM_ZEROINIT, countW * sizeof(WCHAR))))
{
ERR("Could not allocate new unicode buffer\n");
return;
}
textW = LocalLock(hloc32W_new);
MultiByteToWideChar(CP_ACP, 0, textA, countA, textW, countW);
LocalUnlock(hloc32W_new);
LocalUnlock(hloc);
if(es->hloc32W)
LocalFree(es->hloc32W);
es->hloc32W = hloc32W_new;
es->hloc32A = hloc;
}
es->buffer_size = LocalSize(es->hloc32W)/sizeof(WCHAR) - 1;
es->flags |= EF_APP_HAS_HANDLE;
EDIT_LockBuffer(es);
es->x_offset = es->y_offset = 0;
es->selection_start = es->selection_end = 0;
EDIT_EM_EmptyUndoBuffer(es);
es->flags &= ~EF_MODIFIED;
es->flags &= ~EF_UPDATE;
EDIT_BuildLineDefs_ML(es, 0, get_text_length(es), 0, NULL);
EDIT_UpdateText(es, NULL, TRUE);
EDIT_EM_ScrollCaret(es);
/* force scroll info update */
EDIT_UpdateScrollInfo(es);
}
/*********************************************************************
*
* EM_SETHANDLE16
*
* FIXME: ES_LOWERCASE, ES_UPPERCASE, ES_OEMCONVERT, ES_NUMBER ???
*
*/
static void EDIT_EM_SetHandle16(EDITSTATE *es, HLOCAL16 hloc)
{
STACK16FRAME* stack16 = MapSL(PtrToUlong(NtCurrentTeb()->WOW32Reserved));
HINSTANCE16 hInstance = GetWindowLongPtrW( es->hwndSelf, GWLP_HINSTANCE );
HANDLE16 oldDS = stack16->ds;
INT countW, countA;
HLOCAL hloc32W_new;
WCHAR *textW;
CHAR *textA;
if (!(es->style & ES_MULTILINE))
return;
if (!hloc) {
WARN("called with NULL handle\n");
return;
}
EDIT_UnlockBuffer(es, TRUE);
if(es->hloc32A)
{
LocalFree(es->hloc32A);
es->hloc32A = NULL;
}
stack16->ds = hInstance;
countA = LocalSize16(hloc);
textA = MapSL(LocalLock16(hloc));
countW = MultiByteToWideChar(CP_ACP, 0, textA, countA, NULL, 0);
if(!(hloc32W_new = LocalAlloc(LMEM_MOVEABLE | LMEM_ZEROINIT, countW * sizeof(WCHAR))))
{
ERR("Could not allocate new unicode buffer\n");
return;
}
textW = LocalLock(hloc32W_new);
MultiByteToWideChar(CP_ACP, 0, textA, countA, textW, countW);
LocalUnlock(hloc32W_new);
LocalUnlock16(hloc);
stack16->ds = oldDS;
if(es->hloc32W)
LocalFree(es->hloc32W);
es->hloc32W = hloc32W_new;
es->hloc16 = hloc;
es->buffer_size = LocalSize(es->hloc32W)/sizeof(WCHAR) - 1;
es->flags |= EF_APP_HAS_HANDLE;
EDIT_LockBuffer(es);
es->x_offset = es->y_offset = 0;
es->selection_start = es->selection_end = 0;
EDIT_EM_EmptyUndoBuffer(es);
es->flags &= ~EF_MODIFIED;
es->flags &= ~EF_UPDATE;
EDIT_BuildLineDefs_ML(es, 0, get_text_length(es), 0, NULL);
EDIT_UpdateText(es, NULL, TRUE);
EDIT_EM_ScrollCaret(es);
/* force scroll info update */
EDIT_UpdateScrollInfo(es);
}
/*********************************************************************
*
* EM_SETLIMITTEXT
*
* NOTE: this version currently implements WinNT limits
*
*/
static void EDIT_EM_SetLimitText(EDITSTATE *es, UINT limit)
{
if (!limit) limit = ~0u;
if (!(es->style & ES_MULTILINE)) limit = min(limit, 0x7ffffffe);
es->buffer_limit = limit;
}
/*********************************************************************
*
* EM_SETMARGINS
*
* EC_USEFONTINFO is used as a left or right value i.e. lParam and not as an
* action wParam despite what the docs say. EC_USEFONTINFO calculates the
* margin according to the textmetrics of the current font.
*
* FIXME - With TrueType or vector fonts EC_USEFONTINFO currently sets one third
* of the char's width as the margin, but this is not how Windows handles this.
* For all other fonts Windows sets the margins to zero.
*
* FIXME - When EC_USEFONTINFO is used the margins only change if the
* edit control is equal to or larger than a certain size.
* Interestingly if one subtracts both the left and right margins from
* this size one always seems to get an even number. The extents of
* the (four character) string "'**'" match this quite closely, so
* we'll use this until we come up with a better idea.
*/
static int calc_min_set_margin_size(HDC dc, INT left, INT right)
{
WCHAR magic_string[] = {'\'','*','*','\'', 0};
SIZE sz;
GetTextExtentPointW(dc, magic_string, sizeof(magic_string)/sizeof(WCHAR) - 1, &sz);
return sz.cx + left + right;
}
static void EDIT_EM_SetMargins(EDITSTATE *es, INT action,
WORD left, WORD right, BOOL repaint)
{
TEXTMETRICW tm;
INT default_left_margin = 0; /* in pixels */
INT default_right_margin = 0; /* in pixels */
/* Set the default margins depending on the font */
if (es->font && (left == EC_USEFONTINFO || right == EC_USEFONTINFO)) {
HDC dc = GetDC(es->hwndSelf);
HFONT old_font = SelectObject(dc, es->font);
GetTextMetricsW(dc, &tm);
/* The default margins are only non zero for TrueType or Vector fonts */
if (tm.tmPitchAndFamily & ( TMPF_VECTOR | TMPF_TRUETYPE )) {
int min_size;
RECT rc;
/* This must be calculated more exactly! But how? */
default_left_margin = tm.tmAveCharWidth / 2;
default_right_margin = tm.tmAveCharWidth / 2;
min_size = calc_min_set_margin_size(dc, default_left_margin, default_right_margin);
GetClientRect(es->hwndSelf, &rc);
if(rc.right - rc.left < min_size) {
default_left_margin = es->left_margin;
default_right_margin = es->right_margin;
}
}
SelectObject(dc, old_font);
ReleaseDC(es->hwndSelf, dc);
}
if (action & EC_LEFTMARGIN) {
es->format_rect.left -= es->left_margin;
if (left != EC_USEFONTINFO)
es->left_margin = left;
else
es->left_margin = default_left_margin;
es->format_rect.left += es->left_margin;
}
if (action & EC_RIGHTMARGIN) {
es->format_rect.right += es->right_margin;
if (right != EC_USEFONTINFO)
es->right_margin = right;
else
es->right_margin = default_right_margin;
es->format_rect.right -= es->right_margin;
}
if (action & (EC_LEFTMARGIN | EC_RIGHTMARGIN)) {
EDIT_AdjustFormatRect(es);
if (repaint) EDIT_UpdateText(es, NULL, TRUE);
}
TRACE("left=%d, right=%d\n", es->left_margin, es->right_margin);
}
/*********************************************************************
*
* EM_SETPASSWORDCHAR
*
*/
static void EDIT_EM_SetPasswordChar(EDITSTATE *es, WCHAR c)
{
LONG style;
if (es->style & ES_MULTILINE)
return;
if (es->password_char == c)
return;
style = GetWindowLongW( es->hwndSelf, GWL_STYLE );
es->password_char = c;
if (c) {
SetWindowLongW( es->hwndSelf, GWL_STYLE, style | ES_PASSWORD );
es->style |= ES_PASSWORD;
} else {
SetWindowLongW( es->hwndSelf, GWL_STYLE, style & ~ES_PASSWORD );
es->style &= ~ES_PASSWORD;
}
EDIT_UpdateText(es, NULL, TRUE);
}
/*********************************************************************
*
* EDIT_EM_SetSel
*
* note: unlike the specs say: the order of start and end
* _is_ preserved in Windows. (i.e. start can be > end)
* In other words: this handler is OK
*
*/
static void EDIT_EM_SetSel(EDITSTATE *es, UINT start, UINT end, BOOL after_wrap)
{
UINT old_start = es->selection_start;
UINT old_end = es->selection_end;
UINT len = get_text_length(es);
if (start == (UINT)-1) {
start = es->selection_end;
end = es->selection_end;
} else {
start = min(start, len);
end = min(end, len);
}
es->selection_start = start;
es->selection_end = end;
if (after_wrap)
es->flags |= EF_AFTER_WRAP;
else
es->flags &= ~EF_AFTER_WRAP;
/* Compute the necessary invalidation region. */
/* Note that we don't need to invalidate regions which have
* "never" been selected, or those which are "still" selected.
* In fact, every time we hit a selection boundary, we can
* *toggle* whether we need to invalidate. Thus we can optimize by
* *sorting* the interval endpoints. Let's assume that we sort them
* in this order:
* start <= end <= old_start <= old_end
* Knuth 5.3.1 (p 183) asssures us that this can be done optimally
* in 5 comparisons; ie it's impossible to do better than the
* following: */
ORDER_UINT(end, old_end);
ORDER_UINT(start, old_start);
ORDER_UINT(old_start, old_end);
ORDER_UINT(start, end);
/* Note that at this point 'end' and 'old_start' are not in order, but
* start is definitely the min. and old_end is definitely the max. */
if (end != old_start)
{
/*
* One can also do
* ORDER_UINT32(end, old_start);
* EDIT_InvalidateText(es, start, end);
* EDIT_InvalidateText(es, old_start, old_end);
* in place of the following if statement.
* (That would complete the optimal five-comparison four-element sort.)
*/
if (old_start > end )
{
EDIT_InvalidateText(es, start, end);
EDIT_InvalidateText(es, old_start, old_end);
}
else
{
EDIT_InvalidateText(es, start, old_start);
EDIT_InvalidateText(es, end, old_end);
}
}
else EDIT_InvalidateText(es, start, old_end);
}
/*********************************************************************
*
* EM_SETTABSTOPS
*
*/
static BOOL EDIT_EM_SetTabStops(EDITSTATE *es, INT count, const INT *tabs)
{
if (!(es->style & ES_MULTILINE))
return FALSE;
HeapFree(GetProcessHeap(), 0, es->tabs);
es->tabs_count = count;
if (!count)
es->tabs = NULL;
else {
es->tabs = HeapAlloc(GetProcessHeap(), 0, count * sizeof(INT));
memcpy(es->tabs, tabs, count * sizeof(INT));
}
return TRUE;
}
/*********************************************************************
*
* EM_SETTABSTOPS16
*
*/
static BOOL EDIT_EM_SetTabStops16(EDITSTATE *es, INT count, const INT16 *tabs)
{
if (!(es->style & ES_MULTILINE))
return FALSE;
HeapFree(GetProcessHeap(), 0, es->tabs);
es->tabs_count = count;
if (!count)
es->tabs = NULL;
else {
INT i;
es->tabs = HeapAlloc(GetProcessHeap(), 0, count * sizeof(INT));
for (i = 0 ; i < count ; i++)
es->tabs[i] = *tabs++;
}
return TRUE;
}
/*********************************************************************
*
* EM_SETWORDBREAKPROC
*
*/
static void EDIT_EM_SetWordBreakProc(EDITSTATE *es, void *wbp)
{
if (es->word_break_proc == wbp)
return;
es->word_break_proc = wbp;
es->word_break_proc16 = NULL;
if ((es->style & ES_MULTILINE) && !(es->style & ES_AUTOHSCROLL)) {
EDIT_BuildLineDefs_ML(es, 0, get_text_length(es), 0, NULL);
EDIT_UpdateText(es, NULL, TRUE);
}
}
/*********************************************************************
*
* EM_SETWORDBREAKPROC16
*
*/
static void EDIT_EM_SetWordBreakProc16(EDITSTATE *es, EDITWORDBREAKPROC16 wbp)
{
if (es->word_break_proc16 == wbp)
return;
es->word_break_proc = NULL;
es->word_break_proc16 = wbp;
if ((es->style & ES_MULTILINE) && !(es->style & ES_AUTOHSCROLL)) {
EDIT_BuildLineDefs_ML(es, 0, get_text_length(es), 0, NULL);
EDIT_UpdateText(es, NULL, TRUE);
}
}
/*********************************************************************
*
* EM_UNDO / WM_UNDO
*
*/
static BOOL EDIT_EM_Undo(EDITSTATE *es)
{
INT ulength;
LPWSTR utext;
/* As per MSDN spec, for a single-line edit control,
the return value is always TRUE */
if( es->style & ES_READONLY )
return !(es->style & ES_MULTILINE);
ulength = strlenW(es->undo_text);
utext = HeapAlloc(GetProcessHeap(), 0, (ulength + 1) * sizeof(WCHAR));
strcpyW(utext, es->undo_text);
TRACE("before UNDO:insertion length = %d, deletion buffer = %s\n",
es->undo_insert_count, debugstr_w(utext));
EDIT_EM_SetSel(es, es->undo_position, es->undo_position + es->undo_insert_count, FALSE);
EDIT_EM_EmptyUndoBuffer(es);
EDIT_EM_ReplaceSel(es, TRUE, utext, TRUE, TRUE);
EDIT_EM_SetSel(es, es->undo_position, es->undo_position + es->undo_insert_count, FALSE);
/* send the notification after the selection start and end are set */
EDIT_NOTIFY_PARENT(es, EN_CHANGE);
EDIT_EM_ScrollCaret(es);
HeapFree(GetProcessHeap(), 0, utext);
TRACE("after UNDO:insertion length = %d, deletion buffer = %s\n",
es->undo_insert_count, debugstr_w(es->undo_text));
return TRUE;
}
/*********************************************************************
*
* WM_CHAR
*
*/
static void EDIT_WM_Char(EDITSTATE *es, WCHAR c)
{
BOOL control;
control = GetKeyState(VK_CONTROL) & 0x8000;
switch (c) {
case '\r':
/* If the edit doesn't want the return and it's not a multiline edit, do nothing */
if(!(es->style & ES_MULTILINE) && !(es->style & ES_WANTRETURN))
break;
case '\n':
if (es->style & ES_MULTILINE) {
if (es->style & ES_READONLY) {
EDIT_MoveHome(es, FALSE);
EDIT_MoveDown_ML(es, FALSE);
} else {
static const WCHAR cr_lfW[] = {'\r','\n',0};
EDIT_EM_ReplaceSel(es, TRUE, cr_lfW, TRUE, TRUE);
}
}
break;
case '\t':
if ((es->style & ES_MULTILINE) && !(es->style & ES_READONLY))
{
static const WCHAR tabW[] = {'\t',0};
EDIT_EM_ReplaceSel(es, TRUE, tabW, TRUE, TRUE);
}
break;
case VK_BACK:
if (!(es->style & ES_READONLY) && !control) {
if (es->selection_start != es->selection_end)
EDIT_WM_Clear(es);
else {
/* delete character left of caret */
EDIT_EM_SetSel(es, (UINT)-1, 0, FALSE);
EDIT_MoveBackward(es, TRUE);
EDIT_WM_Clear(es);
}
}
break;
case 0x03: /* ^C */
if (!(es->style & ES_PASSWORD))
SendMessageW(es->hwndSelf, WM_COPY, 0, 0);
break;
case 0x16: /* ^V */
if (!(es->style & ES_READONLY))
SendMessageW(es->hwndSelf, WM_PASTE, 0, 0);
break;
case 0x18: /* ^X */
if (!((es->style & ES_READONLY) || (es->style & ES_PASSWORD)))
SendMessageW(es->hwndSelf, WM_CUT, 0, 0);
break;
case 0x1A: /* ^Z */
if (!(es->style & ES_READONLY))
SendMessageW(es->hwndSelf, WM_UNDO, 0, 0);
break;
default:
/*If Edit control style is ES_NUMBER allow users to key in only numeric values*/
if( (es->style & ES_NUMBER) && !( c >= '0' && c <= '9') )
break;
if (!(es->style & ES_READONLY) && (c >= ' ') && (c != 127)) {
WCHAR str[2];
str[0] = c;
str[1] = '\0';
EDIT_EM_ReplaceSel(es, TRUE, str, TRUE, TRUE);
}
break;
}
}
/*********************************************************************
*
* WM_COMMAND
*
*/
static void EDIT_WM_Command(EDITSTATE *es, INT code, INT id, HWND control)
{
if (code || control)
return;
switch (id) {
case EM_UNDO:
EDIT_EM_Undo(es);
break;
case WM_CUT:
EDIT_WM_Cut(es);
break;
case WM_COPY:
EDIT_WM_Copy(es);
break;
case WM_PASTE:
EDIT_WM_Paste(es);
break;
case WM_CLEAR:
EDIT_WM_Clear(es);
break;
case EM_SETSEL:
EDIT_EM_SetSel(es, 0, (UINT)-1, FALSE);
EDIT_EM_ScrollCaret(es);
break;
default:
ERR("unknown menu item, please report\n");
break;
}
}
/*********************************************************************
*
* WM_CONTEXTMENU
*
* Note: the resource files resource/sysres_??.rc cannot define a
* single popup menu. Hence we use a (dummy) menubar
* containing the single popup menu as its first item.
*
* FIXME: the message identifiers have been chosen arbitrarily,
* hence we use MF_BYPOSITION.
* We might as well use the "real" values (anybody knows ?)
* The menu definition is in resources/sysres_??.rc.
* Once these are OK, we better use MF_BYCOMMAND here
* (as we do in EDIT_WM_Command()).
*
*/
static void EDIT_WM_ContextMenu(EDITSTATE *es, INT x, INT y)
{
HMENU menu = LoadMenuA(user32_module, "EDITMENU");
HMENU popup = GetSubMenu(menu, 0);
UINT start = es->selection_start;
UINT end = es->selection_end;
ORDER_UINT(start, end);
/* undo */
EnableMenuItem(popup, 0, MF_BYPOSITION | (EDIT_EM_CanUndo(es) && !(es->style & ES_READONLY) ? MF_ENABLED : MF_GRAYED));
/* cut */
EnableMenuItem(popup, 2, MF_BYPOSITION | ((end - start) && !(es->style & ES_PASSWORD) && !(es->style & ES_READONLY) ? MF_ENABLED : MF_GRAYED));
/* copy */
EnableMenuItem(popup, 3, MF_BYPOSITION | ((end - start) && !(es->style & ES_PASSWORD) ? MF_ENABLED : MF_GRAYED));
/* paste */
EnableMenuItem(popup, 4, MF_BYPOSITION | (IsClipboardFormatAvailable(CF_UNICODETEXT) && !(es->style & ES_READONLY) ? MF_ENABLED : MF_GRAYED));
/* delete */
EnableMenuItem(popup, 5, MF_BYPOSITION | ((end - start) && !(es->style & ES_READONLY) ? MF_ENABLED : MF_GRAYED));
/* select all */
EnableMenuItem(popup, 7, MF_BYPOSITION | (start || (end != get_text_length(es)) ? MF_ENABLED : MF_GRAYED));
if (x == -1 && y == -1) /* passed via VK_APPS press/release */
{
RECT rc;
/* Windows places the menu at the edit's center in this case */
GetClientRect(es->hwndSelf, &rc);
MapWindowPoints(es->hwndSelf, 0, (POINT *)&rc, 2);
x = rc.left + (rc.right - rc.left) / 2;
y = rc.top + (rc.bottom - rc.top) / 2;
}
TrackPopupMenu(popup, TPM_LEFTALIGN | TPM_RIGHTBUTTON, x, y, 0, es->hwndSelf, NULL);
DestroyMenu(menu);
}
/*********************************************************************
*
* WM_COPY
*
*/
static void EDIT_WM_Copy(EDITSTATE *es)
{
INT s = min(es->selection_start, es->selection_end);
INT e = max(es->selection_start, es->selection_end);
HGLOBAL hdst;
LPWSTR dst;
DWORD len;
if (e == s) return;
len = e - s;
hdst = GlobalAlloc(GMEM_MOVEABLE | GMEM_DDESHARE, (len + 1) * sizeof(WCHAR));
dst = GlobalLock(hdst);
memcpy(dst, es->text + s, len * sizeof(WCHAR));
dst[len] = 0; /* ensure 0 termination */
TRACE("%s\n", debugstr_w(dst));
GlobalUnlock(hdst);
OpenClipboard(es->hwndSelf);
EmptyClipboard();
SetClipboardData(CF_UNICODETEXT, hdst);
CloseClipboard();
}
/*********************************************************************
*
* WM_CREATE
*
*/
static LRESULT EDIT_WM_Create(EDITSTATE *es, LPCWSTR name)
{
RECT clientRect;
TRACE("%s\n", debugstr_w(name));
/*
* To initialize some final structure members, we call some helper
* functions. However, since the EDITSTATE is not consistent (i.e.
* not fully initialized), we should be very careful which
* functions can be called, and in what order.
*/
EDIT_WM_SetFont(es, 0, FALSE);
EDIT_EM_EmptyUndoBuffer(es);
/* We need to calculate the format rect
(applications may send EM_SETMARGINS before the control gets visible) */
GetClientRect(es->hwndSelf, &clientRect);
EDIT_SetRectNP(es, &clientRect);
if (name && *name) {
EDIT_EM_ReplaceSel(es, FALSE, name, FALSE, FALSE);
/* if we insert text to the editline, the text scrolls out
* of the window, as the caret is placed after the insert
* pos normally; thus we reset es->selection... to 0 and
* update caret
*/
es->selection_start = es->selection_end = 0;
/* Adobe Photoshop does NOT like this. and MSDN says that EN_CHANGE
* Messages are only to be sent when the USER does something to
* change the contents. So I am removing this EN_CHANGE
*
* EDIT_NOTIFY_PARENT(es, EN_CHANGE);
*/
EDIT_EM_ScrollCaret(es);
}
/* force scroll info update */
EDIT_UpdateScrollInfo(es);
/* The rule seems to return 1 here for success */
/* Power Builder masked edit controls will crash */
/* if not. */
/* FIXME: is that in all cases so ? */
return 1;
}
/*********************************************************************
*
* WM_DESTROY
*
*/
static LRESULT EDIT_WM_Destroy(EDITSTATE *es)
{
LINEDEF *pc, *pp;
if (es->hloc32W) {
while (LocalUnlock(es->hloc32W)) ;
LocalFree(es->hloc32W);
}
if (es->hloc32A) {
while (LocalUnlock(es->hloc32A)) ;
LocalFree(es->hloc32A);
}
if (es->hloc16) {
STACK16FRAME* stack16 = MapSL(PtrToUlong(NtCurrentTeb()->WOW32Reserved));
HANDLE16 oldDS = stack16->ds;
stack16->ds = GetWindowLongPtrW( es->hwndSelf, GWLP_HINSTANCE );
while (LocalUnlock16(es->hloc16)) ;
LocalFree16(es->hloc16);
stack16->ds = oldDS;
}
pc = es->first_line_def;
while (pc)
{
pp = pc->next;
HeapFree(GetProcessHeap(), 0, pc);
pc = pp;
}
SetWindowLongPtrW( es->hwndSelf, 0, 0 );
HeapFree(GetProcessHeap(), 0, es);
return 0;
}
/*********************************************************************
*
* WM_GETTEXT
*
*/
static INT EDIT_WM_GetText(const EDITSTATE *es, INT count, LPWSTR dst, BOOL unicode)
{
if(!count) return 0;
if(unicode)
{
lstrcpynW(dst, es->text, count);
return strlenW(dst);
}
else
{
LPSTR textA = (LPSTR)dst;
if (!WideCharToMultiByte(CP_ACP, 0, es->text, -1, textA, count, NULL, NULL))
textA[count - 1] = 0; /* ensure 0 termination */
return strlen(textA);
}
}
/*********************************************************************
*
* WM_HSCROLL
*
*/
static LRESULT EDIT_WM_HScroll(EDITSTATE *es, INT action, INT pos)
{
INT dx;
INT fw;
if (!(es->style & ES_MULTILINE))
return 0;
if (!(es->style & ES_AUTOHSCROLL))
return 0;
dx = 0;
fw = es->format_rect.right - es->format_rect.left;
switch (action) {
case SB_LINELEFT:
TRACE("SB_LINELEFT\n");
if (es->x_offset)
dx = -es->char_width;
break;
case SB_LINERIGHT:
TRACE("SB_LINERIGHT\n");
if (es->x_offset < es->text_width)
dx = es->char_width;
break;
case SB_PAGELEFT:
TRACE("SB_PAGELEFT\n");
if (es->x_offset)
dx = -fw / HSCROLL_FRACTION / es->char_width * es->char_width;
break;
case SB_PAGERIGHT:
TRACE("SB_PAGERIGHT\n");
if (es->x_offset < es->text_width)
dx = fw / HSCROLL_FRACTION / es->char_width * es->char_width;
break;
case SB_LEFT:
TRACE("SB_LEFT\n");
if (es->x_offset)
dx = -es->x_offset;
break;
case SB_RIGHT:
TRACE("SB_RIGHT\n");
if (es->x_offset < es->text_width)
dx = es->text_width - es->x_offset;
break;
case SB_THUMBTRACK:
TRACE("SB_THUMBTRACK %d\n", pos);
es->flags |= EF_HSCROLL_TRACK;
if(es->style & WS_HSCROLL)
dx = pos - es->x_offset;
else
{
INT fw, new_x;
/* Sanity check */
if(pos < 0 || pos > 100) return 0;
/* Assume default scroll range 0-100 */
fw = es->format_rect.right - es->format_rect.left;
new_x = pos * (es->text_width - fw) / 100;
dx = es->text_width ? (new_x - es->x_offset) : 0;
}
break;
case SB_THUMBPOSITION:
TRACE("SB_THUMBPOSITION %d\n", pos);
es->flags &= ~EF_HSCROLL_TRACK;
if(GetWindowLongW( es->hwndSelf, GWL_STYLE ) & WS_HSCROLL)
dx = pos - es->x_offset;
else
{
INT fw, new_x;
/* Sanity check */
if(pos < 0 || pos > 100) return 0;
/* Assume default scroll range 0-100 */
fw = es->format_rect.right - es->format_rect.left;
new_x = pos * (es->text_width - fw) / 100;
dx = es->text_width ? (new_x - es->x_offset) : 0;
}
if (!dx) {
/* force scroll info update */
EDIT_UpdateScrollInfo(es);
EDIT_NOTIFY_PARENT(es, EN_HSCROLL);
}
break;
case SB_ENDSCROLL:
TRACE("SB_ENDSCROLL\n");
break;
/*
* FIXME : the next two are undocumented !
* Are we doing the right thing ?
* At least Win 3.1 Notepad makes use of EM_GETTHUMB this way,
* although it's also a regular control message.
*/
case EM_GETTHUMB: /* this one is used by NT notepad */
case EM_GETTHUMB16:
{
LRESULT ret;
if(GetWindowLongW( es->hwndSelf, GWL_STYLE ) & WS_HSCROLL)
ret = GetScrollPos(es->hwndSelf, SB_HORZ);
else
{
/* Assume default scroll range 0-100 */
INT fw = es->format_rect.right - es->format_rect.left;
ret = es->text_width ? es->x_offset * 100 / (es->text_width - fw) : 0;
}
TRACE("EM_GETTHUMB: returning %ld\n", ret);
return ret;
}
case EM_LINESCROLL16:
TRACE("EM_LINESCROLL16\n");
dx = pos;
break;
default:
ERR("undocumented WM_HSCROLL action %d (0x%04x), please report\n",
action, action);
return 0;
}
if (dx)
{
INT fw = es->format_rect.right - es->format_rect.left;
/* check if we are going to move too far */
if(es->x_offset + dx + fw > es->text_width)
dx = es->text_width - fw - es->x_offset;
if(dx)
EDIT_EM_LineScroll_internal(es, dx, 0);
}
return 0;
}
/*********************************************************************
*
* EDIT_CheckCombo
*
*/
static BOOL EDIT_CheckCombo(EDITSTATE *es, UINT msg, INT key)
{
HWND hLBox = es->hwndListBox;
HWND hCombo;
BOOL bDropped;
int nEUI;
if (!hLBox)
return FALSE;
hCombo = GetParent(es->hwndSelf);
bDropped = TRUE;
nEUI = 0;
TRACE_(combo)("[%p]: handling msg %x (%x)\n", es->hwndSelf, msg, key);
if (key == VK_UP || key == VK_DOWN)
{
if (SendMessageW(hCombo, CB_GETEXTENDEDUI, 0, 0))
nEUI = 1;
if (msg == WM_KEYDOWN || nEUI)
bDropped = (BOOL)SendMessageW(hCombo, CB_GETDROPPEDSTATE, 0, 0);
}
switch (msg)
{
case WM_KEYDOWN:
if (!bDropped && nEUI && (key == VK_UP || key == VK_DOWN))
{
/* make sure ComboLBox pops up */
SendMessageW(hCombo, CB_SETEXTENDEDUI, FALSE, 0);
key = VK_F4;
nEUI = 2;
}
SendMessageW(hLBox, WM_KEYDOWN, (WPARAM)key, 0);
break;
case WM_SYSKEYDOWN: /* Handle Alt+up/down arrows */
if (nEUI)
SendMessageW(hCombo, CB_SHOWDROPDOWN, bDropped ? FALSE : TRUE, 0);
else
SendMessageW(hLBox, WM_KEYDOWN, (WPARAM)VK_F4, 0);
break;
}
if(nEUI == 2)
SendMessageW(hCombo, CB_SETEXTENDEDUI, TRUE, 0);
return TRUE;
}
/*********************************************************************
*
* WM_KEYDOWN
*
* Handling of special keys that don't produce a WM_CHAR
* (i.e. non-printable keys) & Backspace & Delete
*
*/
static LRESULT EDIT_WM_KeyDown(EDITSTATE *es, INT key)
{
BOOL shift;
BOOL control;
if (GetKeyState(VK_MENU) & 0x8000)
return 0;
shift = GetKeyState(VK_SHIFT) & 0x8000;
control = GetKeyState(VK_CONTROL) & 0x8000;
switch (key) {
case VK_F4:
case VK_UP:
if (EDIT_CheckCombo(es, WM_KEYDOWN, key) || key == VK_F4)
break;
/* fall through */
case VK_LEFT:
if ((es->style & ES_MULTILINE) && (key == VK_UP))
EDIT_MoveUp_ML(es, shift);
else
if (control)
EDIT_MoveWordBackward(es, shift);
else
EDIT_MoveBackward(es, shift);
break;
case VK_DOWN:
if (EDIT_CheckCombo(es, WM_KEYDOWN, key))
break;
/* fall through */
case VK_RIGHT:
if ((es->style & ES_MULTILINE) && (key == VK_DOWN))
EDIT_MoveDown_ML(es, shift);
else if (control)
EDIT_MoveWordForward(es, shift);
else
EDIT_MoveForward(es, shift);
break;
case VK_HOME:
EDIT_MoveHome(es, shift);
break;
case VK_END:
EDIT_MoveEnd(es, shift);
break;
case VK_PRIOR:
if (es->style & ES_MULTILINE)
EDIT_MovePageUp_ML(es, shift);
else
EDIT_CheckCombo(es, WM_KEYDOWN, key);
break;
case VK_NEXT:
if (es->style & ES_MULTILINE)
EDIT_MovePageDown_ML(es, shift);
else
EDIT_CheckCombo(es, WM_KEYDOWN, key);
break;
case VK_DELETE:
if (!(es->style & ES_READONLY) && !(shift && control)) {
if (es->selection_start != es->selection_end) {
if (shift)
EDIT_WM_Cut(es);
else
EDIT_WM_Clear(es);
} else {
if (shift) {
/* delete character left of caret */
EDIT_EM_SetSel(es, (UINT)-1, 0, FALSE);
EDIT_MoveBackward(es, TRUE);
EDIT_WM_Clear(es);
} else if (control) {
/* delete to end of line */
EDIT_EM_SetSel(es, (UINT)-1, 0, FALSE);
EDIT_MoveEnd(es, TRUE);
EDIT_WM_Clear(es);
} else {
/* delete character right of caret */
EDIT_EM_SetSel(es, (UINT)-1, 0, FALSE);
EDIT_MoveForward(es, TRUE);
EDIT_WM_Clear(es);
}
}
}
break;
case VK_INSERT:
if (shift) {
if (!(es->style & ES_READONLY))
EDIT_WM_Paste(es);
} else if (control)
EDIT_WM_Copy(es);
break;
case VK_RETURN:
/* If the edit doesn't want the return send a message to the default object */
if(!(es->style & ES_WANTRETURN))
{
HWND hwndParent = GetParent(es->hwndSelf);
DWORD dw = SendMessageW( hwndParent, DM_GETDEFID, 0, 0 );
if (HIWORD(dw) == DC_HASDEFID)
{
SendMessageW( hwndParent, WM_COMMAND,
MAKEWPARAM( LOWORD(dw), BN_CLICKED ),
(LPARAM)GetDlgItem( hwndParent, LOWORD(dw) ) );
}
else
SendMessageW( hwndParent, WM_COMMAND, IDOK, (LPARAM)GetDlgItem( hwndParent, IDOK ) );
}
break;
}
return 0;
}
/*********************************************************************
*
* WM_KILLFOCUS
*
*/
static LRESULT EDIT_WM_KillFocus(EDITSTATE *es)
{
es->flags &= ~EF_FOCUSED;
DestroyCaret();
if(!(es->style & ES_NOHIDESEL))
EDIT_InvalidateText(es, es->selection_start, es->selection_end);
EDIT_NOTIFY_PARENT(es, EN_KILLFOCUS);
return 0;
}
/*********************************************************************
*
* WM_LBUTTONDBLCLK
*
* The caret position has been set on the WM_LBUTTONDOWN message
*
*/
static LRESULT EDIT_WM_LButtonDblClk(EDITSTATE *es)
{
INT s;
INT e = es->selection_end;
INT l;
INT li;
INT ll;
es->bCaptureState = TRUE;
SetCapture(es->hwndSelf);
l = EDIT_EM_LineFromChar(es, e);
li = EDIT_EM_LineIndex(es, l);
ll = EDIT_EM_LineLength(es, e);
s = li + EDIT_CallWordBreakProc(es, li, e - li, ll, WB_LEFT);
e = li + EDIT_CallWordBreakProc(es, li, e - li, ll, WB_RIGHT);
EDIT_EM_SetSel(es, s, e, FALSE);
EDIT_EM_ScrollCaret(es);
es->region_posx = es->region_posy = 0;
SetTimer(es->hwndSelf, 0, 100, NULL);
return 0;
}
/*********************************************************************
*
* WM_LBUTTONDOWN
*
*/
static LRESULT EDIT_WM_LButtonDown(EDITSTATE *es, DWORD keys, INT x, INT y)
{
INT e;
BOOL after_wrap;
es->bCaptureState = TRUE;
SetCapture(es->hwndSelf);
EDIT_ConfinePoint(es, &x, &y);
e = EDIT_CharFromPos(es, x, y, &after_wrap);
EDIT_EM_SetSel(es, (keys & MK_SHIFT) ? es->selection_start : e, e, after_wrap);
EDIT_EM_ScrollCaret(es);
es->region_posx = es->region_posy = 0;
SetTimer(es->hwndSelf, 0, 100, NULL);
if (!(es->flags & EF_FOCUSED))
SetFocus(es->hwndSelf);
return 0;
}
/*********************************************************************
*
* WM_LBUTTONUP
*
*/
static LRESULT EDIT_WM_LButtonUp(EDITSTATE *es)
{
if (es->bCaptureState) {
KillTimer(es->hwndSelf, 0);
if (GetCapture() == es->hwndSelf) ReleaseCapture();
}
es->bCaptureState = FALSE;
return 0;
}
/*********************************************************************
*
* WM_MBUTTONDOWN
*
*/
static LRESULT EDIT_WM_MButtonDown(EDITSTATE *es)
{
SendMessageW(es->hwndSelf, WM_PASTE, 0, 0);
return 0;
}
/*********************************************************************
*
* WM_MOUSEMOVE
*
*/
static LRESULT EDIT_WM_MouseMove(EDITSTATE *es, INT x, INT y)
{
INT e;
BOOL after_wrap;
INT prex, prey;
/* If the mouse has been captured by process other than the edit control itself,
* the windows edit controls will not select the strings with mouse move.
*/
if (!es->bCaptureState || GetCapture() != es->hwndSelf)
return 0;
/*
* FIXME: gotta do some scrolling if outside client
* area. Maybe reset the timer ?
*/
prex = x; prey = y;
EDIT_ConfinePoint(es, &x, &y);
es->region_posx = (prex < x) ? -1 : ((prex > x) ? 1 : 0);
es->region_posy = (prey < y) ? -1 : ((prey > y) ? 1 : 0);
e = EDIT_CharFromPos(es, x, y, &after_wrap);
EDIT_EM_SetSel(es, es->selection_start, e, after_wrap);
EDIT_SetCaretPos(es,es->selection_end,es->flags & EF_AFTER_WRAP);
return 0;
}
/*********************************************************************
*
* WM_NCCREATE
*
* See also EDIT_WM_StyleChanged
*/
static LRESULT EDIT_WM_NCCreate(HWND hwnd, LPCREATESTRUCTW lpcs, BOOL unicode)
{
EDITSTATE *es;
UINT alloc_size;
TRACE("Creating %s edit control, style = %08x\n",
unicode ? "Unicode" : "ANSI", lpcs->style);
if (!(es = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*es))))
return FALSE;
SetWindowLongPtrW( hwnd, 0, (LONG_PTR)es );
/*
* Note: since the EDITSTATE has not been fully initialized yet,
* we can't use any API calls that may send
* WM_XXX messages before WM_NCCREATE is completed.
*/
es->is_unicode = unicode;
es->style = lpcs->style;
es->bEnableState = !(es->style & WS_DISABLED);
es->hwndSelf = hwnd;
/* Save parent, which will be notified by EN_* messages */
es->hwndParent = lpcs->hwndParent;
if (es->style & ES_COMBO)
es->hwndListBox = GetDlgItem(es->hwndParent, ID_CB_LISTBOX);
/* Number overrides lowercase overrides uppercase (at least it
* does in Win95). However I'll bet that ES_NUMBER would be
* invalid under Win 3.1.
*/
if (es->style & ES_NUMBER) {
; /* do not override the ES_NUMBER */
} else if (es->style & ES_LOWERCASE) {
es->style &= ~ES_UPPERCASE;
}
if (es->style & ES_MULTILINE) {
es->buffer_limit = BUFLIMIT_INITIAL;
if (es->style & WS_VSCROLL)
es->style |= ES_AUTOVSCROLL;
if (es->style & WS_HSCROLL)
es->style |= ES_AUTOHSCROLL;
es->style &= ~ES_PASSWORD;
if ((es->style & ES_CENTER) || (es->style & ES_RIGHT)) {
/* Confirmed - RIGHT overrides CENTER */
if (es->style & ES_RIGHT)
es->style &= ~ES_CENTER;
es->style &= ~WS_HSCROLL;
es->style &= ~ES_AUTOHSCROLL;
}
} else {
es->buffer_limit = BUFLIMIT_INITIAL;
if ((es->style & ES_RIGHT) && (es->style & ES_CENTER))
es->style &= ~ES_CENTER;
es->style &= ~WS_HSCROLL;
es->style &= ~WS_VSCROLL;
if (es->style & ES_PASSWORD)
es->password_char = '*';
}
alloc_size = ROUND_TO_GROW((es->buffer_size + 1) * sizeof(WCHAR));
if(!(es->hloc32W = LocalAlloc(LMEM_MOVEABLE | LMEM_ZEROINIT, alloc_size)))
return FALSE;
es->buffer_size = LocalSize(es->hloc32W)/sizeof(WCHAR) - 1;
if (!(es->undo_text = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, (es->buffer_size + 1) * sizeof(WCHAR))))
return FALSE;
es->undo_buffer_size = es->buffer_size;
if (es->style & ES_MULTILINE)
if (!(es->first_line_def = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(LINEDEF))))
return FALSE;
es->line_count = 1;
/*
* In Win95 look and feel, the WS_BORDER style is replaced by the
* WS_EX_CLIENTEDGE style for the edit control. This gives the edit
* control a nonclient area so we don't need to draw the border.
* If WS_BORDER without WS_EX_CLIENTEDGE is specified we shouldn't have
* a nonclient area and we should handle painting the border ourselves.
*
* When making modifications please ensure that the code still works
* for edit controls created directly with style 0x50800000, exStyle 0
* (which should have a single pixel border)
*/
if (lpcs->dwExStyle & WS_EX_CLIENTEDGE)
es->style &= ~WS_BORDER;
else if (es->style & WS_BORDER)
SetWindowLongW(hwnd, GWL_STYLE, es->style & ~WS_BORDER);
return TRUE;
}
/*********************************************************************
*
* WM_PAINT
*
*/
static void EDIT_WM_Paint(EDITSTATE *es, HDC hdc)
{
PAINTSTRUCT ps;
INT i;
HDC dc;
HFONT old_font = 0;
RECT rc;
RECT rcClient;
RECT rcLine;
RECT rcRgn;
HBRUSH brush;
HBRUSH old_brush;
INT bw, bh;
BOOL rev = es->bEnableState &&
((es->flags & EF_FOCUSED) ||
(es->style & ES_NOHIDESEL));
dc = hdc ? hdc : BeginPaint(es->hwndSelf, &ps);
GetClientRect(es->hwndSelf, &rcClient);
/* get the background brush */
brush = EDIT_NotifyCtlColor(es, dc);
/* paint the border and the background */
IntersectClipRect(dc, rcClient.left, rcClient.top, rcClient.right, rcClient.bottom);
if(es->style & WS_BORDER) {
bw = GetSystemMetrics(SM_CXBORDER);
bh = GetSystemMetrics(SM_CYBORDER);
rc = rcClient;
if(es->style & ES_MULTILINE) {
if(es->style & WS_HSCROLL) rc.bottom+=bh;
if(es->style & WS_VSCROLL) rc.right+=bw;
}
/* Draw the frame. Same code as in nonclient.c */
old_brush = SelectObject(dc, GetSysColorBrush(COLOR_WINDOWFRAME));
PatBlt(dc, rc.left, rc.top, rc.right - rc.left, bh, PATCOPY);
PatBlt(dc, rc.left, rc.top, bw, rc.bottom - rc.top, PATCOPY);
PatBlt(dc, rc.left, rc.bottom - 1, rc.right - rc.left, -bw, PATCOPY);
PatBlt(dc, rc.right - 1, rc.top, -bw, rc.bottom - rc.top, PATCOPY);
SelectObject(dc, old_brush);
/* Keep the border clean */
IntersectClipRect(dc, rc.left+bw, rc.top+bh,
max(rc.right-bw, rc.left+bw), max(rc.bottom-bh, rc.top+bh));
}
GetClipBox(dc, &rc);
FillRect(dc, &rc, brush);
IntersectClipRect(dc, es->format_rect.left,
es->format_rect.top,
es->format_rect.right,
es->format_rect.bottom);
if (es->style & ES_MULTILINE) {
rc = rcClient;
IntersectClipRect(dc, rc.left, rc.top, rc.right, rc.bottom);
}
if (es->font)
old_font = SelectObject(dc, es->font);
if (!es->bEnableState)
SetTextColor(dc, GetSysColor(COLOR_GRAYTEXT));
GetClipBox(dc, &rcRgn);
if (es->style & ES_MULTILINE) {
INT vlc = (es->format_rect.bottom - es->format_rect.top) / es->line_height;
for (i = es->y_offset ; i <= min(es->y_offset + vlc, es->y_offset + es->line_count - 1) ; i++) {
EDIT_GetLineRect(es, i, 0, -1, &rcLine);
if (IntersectRect(&rc, &rcRgn, &rcLine))
EDIT_PaintLine(es, dc, i, rev);
}
} else {
EDIT_GetLineRect(es, 0, 0, -1, &rcLine);
if (IntersectRect(&rc, &rcRgn, &rcLine))
EDIT_PaintLine(es, dc, 0, rev);
}
if (es->font)
SelectObject(dc, old_font);
if (!hdc)
EndPaint(es->hwndSelf, &ps);
}
/*********************************************************************
*
* WM_PASTE
*
*/
static void EDIT_WM_Paste(EDITSTATE *es)
{
HGLOBAL hsrc;
LPWSTR src;
/* Protect read-only edit control from modification */
if(es->style & ES_READONLY)
return;
OpenClipboard(es->hwndSelf);
if ((hsrc = GetClipboardData(CF_UNICODETEXT))) {
src = (LPWSTR)GlobalLock(hsrc);
EDIT_EM_ReplaceSel(es, TRUE, src, TRUE, TRUE);
GlobalUnlock(hsrc);
}
else if (es->style & ES_PASSWORD) {
/* clear selected text in password edit box even with empty clipboard */
const WCHAR empty_strW[] = { 0 };
EDIT_EM_ReplaceSel(es, TRUE, empty_strW, TRUE, TRUE);
}
CloseClipboard();
}
/*********************************************************************
*
* WM_SETFOCUS
*
*/
static void EDIT_WM_SetFocus(EDITSTATE *es)
{
es->flags |= EF_FOCUSED;
if (!(es->style & ES_NOHIDESEL))
EDIT_InvalidateText(es, es->selection_start, es->selection_end);
/* single line edit updates itself */
if (!(es->style & ES_MULTILINE))
{
HDC hdc = GetDC(es->hwndSelf);
EDIT_WM_Paint(es, hdc);
ReleaseDC(es->hwndSelf, hdc);
}
CreateCaret(es->hwndSelf, 0, 2, es->line_height);
EDIT_SetCaretPos(es, es->selection_end,
es->flags & EF_AFTER_WRAP);
ShowCaret(es->hwndSelf);
EDIT_NOTIFY_PARENT(es, EN_SETFOCUS);
}
/*********************************************************************
*
* WM_SETFONT
*
* With Win95 look the margins are set to default font value unless
* the system font (font == 0) is being set, in which case they are left
* unchanged.
*
*/
static void EDIT_WM_SetFont(EDITSTATE *es, HFONT font, BOOL redraw)
{
TEXTMETRICW tm;
HDC dc;
HFONT old_font = 0;
RECT clientRect;
es->font = font;
dc = GetDC(es->hwndSelf);
if (font)
old_font = SelectObject(dc, font);
GetTextMetricsW(dc, &tm);
es->line_height = tm.tmHeight;
es->char_width = tm.tmAveCharWidth;
if (font)
SelectObject(dc, old_font);
ReleaseDC(es->hwndSelf, dc);
/* Reset the format rect and the margins */
GetClientRect(es->hwndSelf, &clientRect);
EDIT_SetRectNP(es, &clientRect);
EDIT_EM_SetMargins(es, EC_LEFTMARGIN | EC_RIGHTMARGIN,
EC_USEFONTINFO, EC_USEFONTINFO, FALSE);
if (es->style & ES_MULTILINE)
EDIT_BuildLineDefs_ML(es, 0, get_text_length(es), 0, NULL);
else
EDIT_CalcLineWidth_SL(es);
if (redraw)
EDIT_UpdateText(es, NULL, TRUE);
if (es->flags & EF_FOCUSED) {
DestroyCaret();
CreateCaret(es->hwndSelf, 0, 2, es->line_height);
EDIT_SetCaretPos(es, es->selection_end,
es->flags & EF_AFTER_WRAP);
ShowCaret(es->hwndSelf);
}
}
/*********************************************************************
*
* WM_SETTEXT
*
* NOTES
* For multiline controls (ES_MULTILINE), reception of WM_SETTEXT triggers:
* The modified flag is reset. No notifications are sent.
*
* For single-line controls, reception of WM_SETTEXT triggers:
* The modified flag is reset. EN_UPDATE and EN_CHANGE notifications are sent.
*
*/
static void EDIT_WM_SetText(EDITSTATE *es, LPCWSTR text, BOOL unicode)
{
LPWSTR textW = NULL;
if (!unicode && text)
{
LPCSTR textA = (LPCSTR)text;
INT countW = MultiByteToWideChar(CP_ACP, 0, textA, -1, NULL, 0);
textW = HeapAlloc(GetProcessHeap(), 0, countW * sizeof(WCHAR));
if (textW)
MultiByteToWideChar(CP_ACP, 0, textA, -1, textW, countW);
text = textW;
}
if (es->flags & EF_UPDATE)
/* fixed this bug once; complain if we see it about to happen again. */
ERR("SetSel may generate UPDATE message whose handler may reset "
"selection.\n");
EDIT_EM_SetSel(es, 0, (UINT)-1, FALSE);
if (text)
{
TRACE("%s\n", debugstr_w(text));
EDIT_EM_ReplaceSel(es, FALSE, text, FALSE, FALSE);
if(!unicode)
HeapFree(GetProcessHeap(), 0, textW);
}
else
{
static const WCHAR empty_stringW[] = {0};
TRACE("<NULL>\n");
EDIT_EM_ReplaceSel(es, FALSE, empty_stringW, FALSE, FALSE);
}
es->x_offset = 0;
es->flags &= ~EF_MODIFIED;
EDIT_EM_SetSel(es, 0, 0, FALSE);
/* Send the notification after the selection start and end have been set
* edit control doesn't send notification on WM_SETTEXT
* if it is multiline, or it is part of combobox
*/
if( !((es->style & ES_MULTILINE) || es->hwndListBox))
{
EDIT_NOTIFY_PARENT(es, EN_UPDATE);
EDIT_NOTIFY_PARENT(es, EN_CHANGE);
}
EDIT_EM_ScrollCaret(es);
EDIT_UpdateScrollInfo(es);
}
/*********************************************************************
*
* WM_SIZE
*
*/
static void EDIT_WM_Size(EDITSTATE *es, UINT action, INT width, INT height)
{
if ((action == SIZE_MAXIMIZED) || (action == SIZE_RESTORED)) {
RECT rc;
TRACE("width = %d, height = %d\n", width, height);
SetRect(&rc, 0, 0, width, height);
EDIT_SetRectNP(es, &rc);
EDIT_UpdateText(es, NULL, TRUE);
}
}
/*********************************************************************
*
* WM_STYLECHANGED
*
* This message is sent by SetWindowLong on having changed either the Style
* or the extended style.
*
* We ensure that the window's version of the styles and the EDITSTATE's agree.
*
* See also EDIT_WM_NCCreate
*
* It appears that the Windows version of the edit control allows the style
* (as retrieved by GetWindowLong) to be any value and maintains an internal
* style variable which will generally be different. In this function we
* update the internal style based on what changed in the externally visible
* style.
*
* Much of this content as based upon the MSDN, especially:
* Platform SDK Documentation -> User Interface Services ->
* Windows User Interface -> Edit Controls -> Edit Control Reference ->
* Edit Control Styles
*/
static LRESULT EDIT_WM_StyleChanged ( EDITSTATE *es, WPARAM which, const STYLESTRUCT *style)
{
if (GWL_STYLE == which) {
DWORD style_change_mask;
DWORD new_style;
/* Only a subset of changes can be applied after the control
* has been created.
*/
style_change_mask = ES_UPPERCASE | ES_LOWERCASE |
ES_NUMBER;
if (es->style & ES_MULTILINE)
style_change_mask |= ES_WANTRETURN;
new_style = style->styleNew & style_change_mask;
/* Number overrides lowercase overrides uppercase (at least it
* does in Win95). However I'll bet that ES_NUMBER would be
* invalid under Win 3.1.
*/
if (new_style & ES_NUMBER) {
; /* do not override the ES_NUMBER */
} else if (new_style & ES_LOWERCASE) {
new_style &= ~ES_UPPERCASE;
}
es->style = (es->style & ~style_change_mask) | new_style;
} else if (GWL_EXSTYLE == which) {
; /* FIXME - what is needed here */
} else {
WARN ("Invalid style change %ld\n",which);
}
return 0;
}
/*********************************************************************
*
* WM_SYSKEYDOWN
*
*/
static LRESULT EDIT_WM_SysKeyDown(EDITSTATE *es, INT key, DWORD key_data)
{
if ((key == VK_BACK) && (key_data & 0x2000)) {
if (EDIT_EM_CanUndo(es))
EDIT_EM_Undo(es);
return 0;
} else if (key == VK_UP || key == VK_DOWN) {
if (EDIT_CheckCombo(es, WM_SYSKEYDOWN, key))
return 0;
}
return DefWindowProcW(es->hwndSelf, WM_SYSKEYDOWN, (WPARAM)key, (LPARAM)key_data);
}
/*********************************************************************
*
* WM_TIMER
*
*/
static void EDIT_WM_Timer(EDITSTATE *es)
{
if (es->region_posx < 0) {
EDIT_MoveBackward(es, TRUE);
} else if (es->region_posx > 0) {
EDIT_MoveForward(es, TRUE);
}
/*
* FIXME: gotta do some vertical scrolling here, like
* EDIT_EM_LineScroll(hwnd, 0, 1);
*/
}
/*********************************************************************
*
* WM_VSCROLL
*
*/
static LRESULT EDIT_WM_VScroll(EDITSTATE *es, INT action, INT pos)
{
INT dy;
if (!(es->style & ES_MULTILINE))
return 0;
if (!(es->style & ES_AUTOVSCROLL))
return 0;
dy = 0;
switch (action) {
case SB_LINEUP:
case SB_LINEDOWN:
case SB_PAGEUP:
case SB_PAGEDOWN:
TRACE("action %d (%s)\n", action, (action == SB_LINEUP ? "SB_LINEUP" :
(action == SB_LINEDOWN ? "SB_LINEDOWN" :
(action == SB_PAGEUP ? "SB_PAGEUP" :
"SB_PAGEDOWN"))));
EDIT_EM_Scroll(es, action);
return 0;
case SB_TOP:
TRACE("SB_TOP\n");
dy = -es->y_offset;
break;
case SB_BOTTOM:
TRACE("SB_BOTTOM\n");
dy = es->line_count - 1 - es->y_offset;
break;
case SB_THUMBTRACK:
TRACE("SB_THUMBTRACK %d\n", pos);
es->flags |= EF_VSCROLL_TRACK;
if(es->style & WS_VSCROLL)
dy = pos - es->y_offset;
else
{
/* Assume default scroll range 0-100 */
INT vlc, new_y;
/* Sanity check */
if(pos < 0 || pos > 100) return 0;
vlc = (es->format_rect.bottom - es->format_rect.top) / es->line_height;
new_y = pos * (es->line_count - vlc) / 100;
dy = es->line_count ? (new_y - es->y_offset) : 0;
TRACE("line_count=%d, y_offset=%d, pos=%d, dy = %d\n",
es->line_count, es->y_offset, pos, dy);
}
break;
case SB_THUMBPOSITION:
TRACE("SB_THUMBPOSITION %d\n", pos);
es->flags &= ~EF_VSCROLL_TRACK;
if(es->style & WS_VSCROLL)
dy = pos - es->y_offset;
else
{
/* Assume default scroll range 0-100 */
INT vlc, new_y;
/* Sanity check */
if(pos < 0 || pos > 100) return 0;
vlc = (es->format_rect.bottom - es->format_rect.top) / es->line_height;
new_y = pos * (es->line_count - vlc) / 100;
dy = es->line_count ? (new_y - es->y_offset) : 0;
TRACE("line_count=%d, y_offset=%d, pos=%d, dy = %d\n",
es->line_count, es->y_offset, pos, dy);
}
if (!dy)
{
/* force scroll info update */
EDIT_UpdateScrollInfo(es);
EDIT_NOTIFY_PARENT(es, EN_VSCROLL);
}
break;
case SB_ENDSCROLL:
TRACE("SB_ENDSCROLL\n");
break;
/*
* FIXME : the next two are undocumented !
* Are we doing the right thing ?
* At least Win 3.1 Notepad makes use of EM_GETTHUMB this way,
* although it's also a regular control message.
*/
case EM_GETTHUMB: /* this one is used by NT notepad */
case EM_GETTHUMB16:
{
LRESULT ret;
if(GetWindowLongW( es->hwndSelf, GWL_STYLE ) & WS_VSCROLL)
ret = GetScrollPos(es->hwndSelf, SB_VERT);
else
{
/* Assume default scroll range 0-100 */
INT vlc = (es->format_rect.bottom - es->format_rect.top) / es->line_height;
ret = es->line_count ? es->y_offset * 100 / (es->line_count - vlc) : 0;
}
TRACE("EM_GETTHUMB: returning %ld\n", ret);
return ret;
}
case EM_LINESCROLL16:
TRACE("EM_LINESCROLL16 %d\n", pos);
dy = pos;
break;
default:
ERR("undocumented WM_VSCROLL action %d (0x%04x), please report\n",
action, action);
return 0;
}
if (dy)
EDIT_EM_LineScroll(es, 0, dy);
return 0;
}
/*********************************************************************
*
* EDIT_UpdateText
*
*/
static void EDIT_UpdateTextRegion(EDITSTATE *es, HRGN hrgn, BOOL bErase)
{
if (es->flags & EF_UPDATE) {
es->flags &= ~EF_UPDATE;
EDIT_NOTIFY_PARENT(es, EN_UPDATE);
}
InvalidateRgn(es->hwndSelf, hrgn, bErase);
}
/*********************************************************************
*
* EDIT_UpdateText
*
*/
static void EDIT_UpdateText(EDITSTATE *es, const RECT *rc, BOOL bErase)
{
if (es->flags & EF_UPDATE) {
es->flags &= ~EF_UPDATE;
EDIT_NOTIFY_PARENT(es, EN_UPDATE);
}
InvalidateRect(es->hwndSelf, rc, bErase);
}
/********************************************************************
*
* The Following code is to handle inline editing from IMEs
*/
static void EDIT_GetCompositionStr(HWND hwnd, LPARAM CompFlag, EDITSTATE *es)
{
LONG buflen;
LPWSTR lpCompStr = NULL;
HIMC hIMC;
LPSTR lpCompStrAttr = NULL;
DWORD dwBufLenAttr;
if (!(hIMC = ImmGetContext(hwnd)))
return;
buflen = ImmGetCompositionStringW(hIMC, GCS_COMPSTR, NULL, 0);
if (buflen < 0)
{
ImmReleaseContext(hwnd, hIMC);
return;
}
lpCompStr = HeapAlloc(GetProcessHeap(),0,buflen + sizeof(WCHAR));
if (!lpCompStr)
{
ERR("Unable to allocate IME CompositionString\n");
ImmReleaseContext(hwnd,hIMC);
return;
}
if (buflen)
ImmGetCompositionStringW(hIMC, GCS_COMPSTR, lpCompStr, buflen);
lpCompStr[buflen/sizeof(WCHAR)] = 0;
if (CompFlag & GCS_COMPATTR)
{
/*
* We do not use the attributes yet. it would tell us what characters
* are in transition and which are converted or decided upon
*/
dwBufLenAttr = ImmGetCompositionStringW(hIMC, GCS_COMPATTR, NULL, 0);
if (dwBufLenAttr)
{
dwBufLenAttr ++;
lpCompStrAttr = HeapAlloc(GetProcessHeap(),0,dwBufLenAttr+1);
if (!lpCompStrAttr)
{
ERR("Unable to allocate IME Attribute String\n");
HeapFree(GetProcessHeap(),0,lpCompStr);
ImmReleaseContext(hwnd,hIMC);
return;
}
ImmGetCompositionStringW(hIMC,GCS_COMPATTR, lpCompStrAttr,
dwBufLenAttr);
lpCompStrAttr[dwBufLenAttr] = 0;
}
else
lpCompStrAttr = NULL;
}
/* check for change in composition start */
if (es->selection_end < es->composition_start)
es->composition_start = es->selection_end;
/* replace existing selection string */
es->selection_start = es->composition_start;
if (es->composition_len > 0)
es->selection_end = es->composition_start + es->composition_len;
else
es->selection_end = es->selection_start;
EDIT_EM_ReplaceSel(es, FALSE, lpCompStr, TRUE, TRUE);
es->composition_len = abs(es->composition_start - es->selection_end);
es->selection_start = es->composition_start;
es->selection_end = es->selection_start + es->composition_len;
HeapFree(GetProcessHeap(),0,lpCompStrAttr);
HeapFree(GetProcessHeap(),0,lpCompStr);
ImmReleaseContext(hwnd,hIMC);
}
static void EDIT_GetResultStr(HWND hwnd, EDITSTATE *es)
{
LONG buflen;
LPWSTR lpResultStr;
HIMC hIMC;
if ( !(hIMC = ImmGetContext(hwnd)))
return;
buflen = ImmGetCompositionStringW(hIMC, GCS_RESULTSTR, NULL, 0);
if (buflen <= 0)
{
ImmReleaseContext(hwnd, hIMC);
return;
}
lpResultStr = HeapAlloc(GetProcessHeap(),0, buflen+sizeof(WCHAR));
if (!lpResultStr)
{
ERR("Unable to alloc buffer for IME string\n");
ImmReleaseContext(hwnd, hIMC);
return;
}
ImmGetCompositionStringW(hIMC, GCS_RESULTSTR, lpResultStr, buflen);
lpResultStr[buflen/sizeof(WCHAR)] = 0;
/* check for change in composition start */
if (es->selection_end < es->composition_start)
es->composition_start = es->selection_end;
es->selection_start = es->composition_start;
es->selection_end = es->composition_start + es->composition_len;
EDIT_EM_ReplaceSel(es, TRUE, lpResultStr, TRUE, TRUE);
es->composition_start = es->selection_end;
es->composition_len = 0;
HeapFree(GetProcessHeap(),0,lpResultStr);
ImmReleaseContext(hwnd, hIMC);
}
static void EDIT_ImeComposition(HWND hwnd, LPARAM CompFlag, EDITSTATE *es)
{
if (CompFlag & GCS_RESULTSTR)
EDIT_GetResultStr(hwnd,es);
if (CompFlag & GCS_COMPSTR)
EDIT_GetCompositionStr(hwnd, CompFlag, es);
}
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