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wine/dlls/user32/button.c

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/* File: button.c -- Button type widgets
*
* Copyright (C) 1993 Johannes Ruscheinski
* Copyright (C) 1993 David Metcalfe
* Copyright (C) 1994 Alexandre Julliard
*
* 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. 3, 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
* Styles
* - BS_NOTIFY: is it complete?
* - BS_RIGHTBUTTON: same as BS_LEFTTEXT
* - BS_TYPEMASK
*
* Messages
* - WM_CHAR: Checks a (manual or automatic) check box on '+' or '=', clears it on '-' key.
* - WM_SETFOCUS: For (manual or automatic) radio buttons, send the parent window BN_CLICKED
* - WM_NCCREATE: Turns any BS_OWNERDRAW button into a BS_PUSHBUTTON button.
* - WM_SYSKEYUP
* - BCM_GETIDEALSIZE
* - BCM_GETIMAGELIST
* - BCM_GETTEXTMARGIN
* - BCM_SETIMAGELIST
* - BCM_SETTEXTMARGIN
*
* Notifications
* - BCN_HOTITEMCHANGE
* - BN_DISABLE
* - BN_PUSHED/BN_HILITE
* + BN_KILLFOCUS: is it OK?
* - BN_PAINT
* + BN_SETFOCUS: is it OK?
* - BN_UNPUSHED/BN_UNHILITE
* - NM_CUSTOMDRAW
*
* Structures/Macros/Definitions
* - BUTTON_IMAGELIST
* - NMBCHOTITEM
* - Button_GetIdealSize
* - Button_GetImageList
* - Button_GetTextMargin
* - Button_SetImageList
* - Button_SetTextMargin
*/
#include <stdarg.h>
#include <string.h>
#include <stdlib.h>
#define OEMRESOURCE
#include "windef.h"
#include "winbase.h"
#include "wingdi.h"
#include "wine/winuser16.h"
#include "controls.h"
#include "user_private.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(button);
/* GetWindowLong offsets for window extra information */
#define STATE_GWL_OFFSET 0
#define HFONT_GWL_OFFSET (sizeof(LONG))
#define HIMAGE_GWL_OFFSET (HFONT_GWL_OFFSET+sizeof(HFONT))
#define NB_EXTRA_BYTES (HIMAGE_GWL_OFFSET+sizeof(HANDLE))
/* Button state values */
#define BUTTON_UNCHECKED 0x00
#define BUTTON_CHECKED 0x01
#define BUTTON_3STATE 0x02
#define BUTTON_HIGHLIGHTED 0x04
#define BUTTON_HASFOCUS 0x08
#define BUTTON_NSTATES 0x0F
/* undocumented flags */
#define BUTTON_BTNPRESSED 0x40
#define BUTTON_UNKNOWN2 0x20
#define BUTTON_UNKNOWN3 0x10
#define BUTTON_NOTIFY_PARENT(hWnd, code) \
do { /* Notify parent which has created this button control */ \
TRACE("notification " #code " sent to hwnd=%p\n", GetParent(hWnd)); \
SendMessageW(GetParent(hWnd), WM_COMMAND, \
MAKEWPARAM(GetWindowLongPtrW((hWnd),GWLP_ID), (code)), \
(LPARAM)(hWnd)); \
} while(0)
static UINT BUTTON_CalcLabelRect( HWND hwnd, HDC hdc, RECT *rc );
static void PB_Paint( HWND hwnd, HDC hDC, UINT action );
static void CB_Paint( HWND hwnd, HDC hDC, UINT action );
static void GB_Paint( HWND hwnd, HDC hDC, UINT action );
static void UB_Paint( HWND hwnd, HDC hDC, UINT action );
static void OB_Paint( HWND hwnd, HDC hDC, UINT action );
static void BUTTON_CheckAutoRadioButton( HWND hwnd );
static LRESULT WINAPI ButtonWndProcA( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam );
static LRESULT WINAPI ButtonWndProcW( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam );
#define MAX_BTN_TYPE 12
static const WORD maxCheckState[MAX_BTN_TYPE] =
{
BUTTON_UNCHECKED, /* BS_PUSHBUTTON */
BUTTON_UNCHECKED, /* BS_DEFPUSHBUTTON */
BUTTON_CHECKED, /* BS_CHECKBOX */
BUTTON_CHECKED, /* BS_AUTOCHECKBOX */
BUTTON_CHECKED, /* BS_RADIOBUTTON */
BUTTON_3STATE, /* BS_3STATE */
BUTTON_3STATE, /* BS_AUTO3STATE */
BUTTON_UNCHECKED, /* BS_GROUPBOX */
BUTTON_UNCHECKED, /* BS_USERBUTTON */
BUTTON_CHECKED, /* BS_AUTORADIOBUTTON */
BUTTON_UNCHECKED, /* Not defined */
BUTTON_UNCHECKED /* BS_OWNERDRAW */
};
typedef void (*pfPaint)( HWND hwnd, HDC hdc, UINT action );
static const pfPaint btnPaintFunc[MAX_BTN_TYPE] =
{
PB_Paint, /* BS_PUSHBUTTON */
PB_Paint, /* BS_DEFPUSHBUTTON */
CB_Paint, /* BS_CHECKBOX */
CB_Paint, /* BS_AUTOCHECKBOX */
CB_Paint, /* BS_RADIOBUTTON */
CB_Paint, /* BS_3STATE */
CB_Paint, /* BS_AUTO3STATE */
GB_Paint, /* BS_GROUPBOX */
UB_Paint, /* BS_USERBUTTON */
CB_Paint, /* BS_AUTORADIOBUTTON */
NULL, /* Not defined */
OB_Paint /* BS_OWNERDRAW */
};
static HBITMAP hbitmapCheckBoxes = 0;
static WORD checkBoxWidth = 0, checkBoxHeight = 0;
/*********************************************************************
* button class descriptor
*/
static const WCHAR buttonW[] = {'B','u','t','t','o','n',0};
const struct builtin_class_descr BUTTON_builtin_class =
{
buttonW, /* name */
CS_DBLCLKS | CS_VREDRAW | CS_HREDRAW | CS_PARENTDC, /* style */
ButtonWndProcA, /* procA */
ButtonWndProcW, /* procW */
NB_EXTRA_BYTES, /* extra */
IDC_ARROW, /* cursor */
0 /* brush */
};
static inline LONG get_button_state( HWND hwnd )
{
return GetWindowLongW( hwnd, STATE_GWL_OFFSET );
}
static inline void set_button_state( HWND hwnd, LONG state )
{
SetWindowLongW( hwnd, STATE_GWL_OFFSET, state );
}
static inline HFONT get_button_font( HWND hwnd )
{
return (HFONT)GetWindowLongPtrW( hwnd, HFONT_GWL_OFFSET );
}
static inline void set_button_font( HWND hwnd, HFONT font )
{
SetWindowLongPtrW( hwnd, HFONT_GWL_OFFSET, (LONG_PTR)font );
}
static inline UINT get_button_type( LONG window_style )
{
return (window_style & 0x0f);
}
/* paint a button of any type */
static inline void paint_button( HWND hwnd, LONG style, UINT action )
{
if (btnPaintFunc[style] && IsWindowVisible(hwnd))
{
HDC hdc = GetDC( hwnd );
btnPaintFunc[style]( hwnd, hdc, action );
ReleaseDC( hwnd, hdc );
}
}
/* retrieve the button text; returned buffer must be freed by caller */
static inline WCHAR *get_button_text( HWND hwnd )
{
INT len = 512;
WCHAR *buffer = HeapAlloc( GetProcessHeap(), 0, (len + 1) * sizeof(WCHAR) );
if (buffer) InternalGetWindowText( hwnd, buffer, len + 1 );
return buffer;
}
static void setup_clipping( HWND hwnd, HDC hdc )
{
RECT rc;
GetClientRect( hwnd, &rc );
DPtoLP( hdc, (POINT *)&rc, 2 );
IntersectClipRect( hdc, rc.left, rc.top, rc.right, rc.bottom );
}
/***********************************************************************
* ButtonWndProc_common
*/
static LRESULT ButtonWndProc_common(HWND hWnd, UINT uMsg,
WPARAM wParam, LPARAM lParam, BOOL unicode )
{
RECT rect;
POINT pt;
LONG style = GetWindowLongW( hWnd, GWL_STYLE );
UINT btn_type = get_button_type( style );
LONG state;
HANDLE oldHbitmap;
pt.x = (short)LOWORD(lParam);
pt.y = (short)HIWORD(lParam);
switch (uMsg)
{
case WM_GETDLGCODE:
switch(btn_type)
{
case BS_USERBUTTON:
case BS_PUSHBUTTON: return DLGC_BUTTON | DLGC_UNDEFPUSHBUTTON;
case BS_DEFPUSHBUTTON: return DLGC_BUTTON | DLGC_DEFPUSHBUTTON;
case BS_RADIOBUTTON:
case BS_AUTORADIOBUTTON: return DLGC_BUTTON | DLGC_RADIOBUTTON;
case BS_GROUPBOX: return DLGC_STATIC;
default: return DLGC_BUTTON;
}
case WM_ENABLE:
paint_button( hWnd, btn_type, ODA_DRAWENTIRE );
break;
case WM_CREATE:
if (!hbitmapCheckBoxes)
{
BITMAP bmp;
hbitmapCheckBoxes = LoadBitmapW(0, MAKEINTRESOURCEW(OBM_CHECKBOXES));
GetObjectW( hbitmapCheckBoxes, sizeof(bmp), &bmp );
checkBoxWidth = bmp.bmWidth / 4;
checkBoxHeight = bmp.bmHeight / 3;
}
if (btn_type >= MAX_BTN_TYPE)
return -1; /* abort */
set_button_state( hWnd, BUTTON_UNCHECKED );
return 0;
case WM_ERASEBKGND:
if (btn_type == BS_OWNERDRAW)
{
HDC hdc = (HDC)wParam;
RECT rc;
HBRUSH hBrush;
HWND parent = GetParent(hWnd);
if (!parent) parent = hWnd;
hBrush = (HBRUSH)SendMessageW(parent, WM_CTLCOLORBTN, (WPARAM)hdc, (LPARAM)hWnd);
if (!hBrush) /* did the app forget to call defwindowproc ? */
hBrush = (HBRUSH)DefWindowProcW(parent, WM_CTLCOLORBTN,
(WPARAM)hdc, (LPARAM)hWnd);
GetClientRect(hWnd, &rc);
FillRect(hdc, &rc, hBrush);
}
return 1;
case WM_PRINTCLIENT:
case WM_PAINT:
if (btnPaintFunc[btn_type])
{
PAINTSTRUCT ps;
HDC hdc = wParam ? (HDC)wParam : BeginPaint( hWnd, &ps );
int nOldMode = SetBkMode( hdc, OPAQUE );
(btnPaintFunc[btn_type])( hWnd, hdc, ODA_DRAWENTIRE );
SetBkMode(hdc, nOldMode); /* reset painting mode */
if( !wParam ) EndPaint( hWnd, &ps );
}
break;
case WM_KEYDOWN:
if (wParam == VK_SPACE)
{
SendMessageW( hWnd, BM_SETSTATE, TRUE, 0 );
set_button_state( hWnd, get_button_state( hWnd ) | BUTTON_BTNPRESSED );
}
break;
case WM_LBUTTONDBLCLK:
if(style & BS_NOTIFY ||
btn_type == BS_RADIOBUTTON ||
btn_type == BS_USERBUTTON ||
btn_type == BS_OWNERDRAW)
{
BUTTON_NOTIFY_PARENT(hWnd, BN_DOUBLECLICKED);
break;
}
/* fall through */
case WM_LBUTTONDOWN:
SetCapture( hWnd );
SetFocus( hWnd );
set_button_state( hWnd, get_button_state( hWnd ) | BUTTON_BTNPRESSED );
SendMessageW( hWnd, BM_SETSTATE, TRUE, 0 );
break;
case WM_KEYUP:
if (wParam != VK_SPACE)
break;
/* fall through */
case WM_LBUTTONUP:
state = get_button_state( hWnd );
if (!(state & BUTTON_BTNPRESSED)) break;
state &= BUTTON_NSTATES;
set_button_state( hWnd, state );
if (!(state & BUTTON_HIGHLIGHTED))
{
ReleaseCapture();
break;
}
SendMessageW( hWnd, BM_SETSTATE, FALSE, 0 );
ReleaseCapture();
GetClientRect( hWnd, &rect );
if (uMsg == WM_KEYUP || PtInRect( &rect, pt ))
{
state = get_button_state( hWnd );
switch(btn_type)
{
case BS_AUTOCHECKBOX:
SendMessageW( hWnd, BM_SETCHECK, !(state & BUTTON_CHECKED), 0 );
break;
case BS_AUTORADIOBUTTON:
SendMessageW( hWnd, BM_SETCHECK, TRUE, 0 );
break;
case BS_AUTO3STATE:
SendMessageW( hWnd, BM_SETCHECK,
(state & BUTTON_3STATE) ? 0 : ((state & 3) + 1), 0 );
break;
}
BUTTON_NOTIFY_PARENT(hWnd, BN_CLICKED);
}
break;
case WM_CAPTURECHANGED:
TRACE("WM_CAPTURECHANGED %p\n", hWnd);
state = get_button_state( hWnd );
if (state & BUTTON_BTNPRESSED)
{
state &= BUTTON_NSTATES;
set_button_state( hWnd, state );
if (state & BUTTON_HIGHLIGHTED) SendMessageW( hWnd, BM_SETSTATE, FALSE, 0 );
}
break;
case WM_MOUSEMOVE:
if ((wParam & MK_LBUTTON) && GetCapture() == hWnd)
{
GetClientRect( hWnd, &rect );
SendMessageW( hWnd, BM_SETSTATE, PtInRect(&rect, pt), 0 );
}
break;
case WM_SETTEXT:
{
/* Clear an old text here as Windows does */
HDC hdc = GetDC(hWnd);
HBRUSH hbrush;
RECT client, rc;
HWND parent = GetParent(hWnd);
if (!parent) parent = hWnd;
hbrush = (HBRUSH)SendMessageW(parent, WM_CTLCOLORSTATIC,
(WPARAM)hdc, (LPARAM)hWnd);
if (!hbrush) /* did the app forget to call DefWindowProc ? */
hbrush = (HBRUSH)DefWindowProcW(parent, WM_CTLCOLORSTATIC,
(WPARAM)hdc, (LPARAM)hWnd);
GetClientRect(hWnd, &client);
rc = client;
BUTTON_CalcLabelRect(hWnd, hdc, &rc);
/* Clip by client rect bounds */
if (rc.right > client.right) rc.right = client.right;
if (rc.bottom > client.bottom) rc.bottom = client.bottom;
FillRect(hdc, &rc, hbrush);
ReleaseDC(hWnd, hdc);
if (unicode) DefWindowProcW( hWnd, WM_SETTEXT, wParam, lParam );
else DefWindowProcA( hWnd, WM_SETTEXT, wParam, lParam );
if (btn_type == BS_GROUPBOX) /* Yes, only for BS_GROUPBOX */
InvalidateRect( hWnd, NULL, TRUE );
else
paint_button( hWnd, btn_type, ODA_DRAWENTIRE );
return 1; /* success. FIXME: check text length */
}
case WM_SETFONT:
set_button_font( hWnd, (HFONT)wParam );
if (lParam) InvalidateRect(hWnd, NULL, TRUE);
break;
case WM_GETFONT:
return (LRESULT)get_button_font( hWnd );
case WM_SETFOCUS:
TRACE("WM_SETFOCUS %p\n",hWnd);
set_button_state( hWnd, get_button_state(hWnd) | BUTTON_HASFOCUS );
paint_button( hWnd, btn_type, ODA_FOCUS );
if (style & BS_NOTIFY)
BUTTON_NOTIFY_PARENT(hWnd, BN_SETFOCUS);
break;
case WM_KILLFOCUS:
TRACE("WM_KILLFOCUS %p\n",hWnd);
state = get_button_state( hWnd );
set_button_state( hWnd, state & ~BUTTON_HASFOCUS );
paint_button( hWnd, btn_type, ODA_FOCUS );
if ((state & BUTTON_BTNPRESSED) && GetCapture() == hWnd)
ReleaseCapture();
if (style & BS_NOTIFY)
BUTTON_NOTIFY_PARENT(hWnd, BN_KILLFOCUS);
break;
case WM_SYSCOLORCHANGE:
InvalidateRect( hWnd, NULL, FALSE );
break;
case BM_SETSTYLE16:
case BM_SETSTYLE:
if ((wParam & 0x0f) >= MAX_BTN_TYPE) break;
btn_type = wParam & 0x0f;
style = (style & ~0x0f) | btn_type;
SetWindowLongW( hWnd, GWL_STYLE, style );
/* Only redraw if lParam flag is set.*/
if (lParam)
paint_button( hWnd, btn_type, ODA_DRAWENTIRE );
break;
case BM_CLICK:
SendMessageW( hWnd, WM_LBUTTONDOWN, 0, 0 );
SendMessageW( hWnd, WM_LBUTTONUP, 0, 0 );
break;
case BM_SETIMAGE:
/* Check that image format matches button style */
switch (style & (BS_BITMAP|BS_ICON))
{
case BS_BITMAP:
if (wParam != IMAGE_BITMAP) return 0;
break;
case BS_ICON:
if (wParam != IMAGE_ICON) return 0;
break;
default:
return 0;
}
oldHbitmap = (HBITMAP)SetWindowLongPtrW( hWnd, HIMAGE_GWL_OFFSET, lParam );
InvalidateRect( hWnd, NULL, FALSE );
return (LRESULT)oldHbitmap;
case BM_GETIMAGE:
return GetWindowLongPtrW( hWnd, HIMAGE_GWL_OFFSET );
case BM_GETCHECK16:
case BM_GETCHECK:
return get_button_state( hWnd ) & 3;
case BM_SETCHECK16:
case BM_SETCHECK:
if (wParam > maxCheckState[btn_type]) wParam = maxCheckState[btn_type];
state = get_button_state( hWnd );
if ((btn_type == BS_RADIOBUTTON) || (btn_type == BS_AUTORADIOBUTTON))
{
if (wParam) style |= WS_TABSTOP;
else style &= ~WS_TABSTOP;
SetWindowLongW( hWnd, GWL_STYLE, style );
}
if ((state & 3) != wParam)
{
set_button_state( hWnd, (state & ~3) | wParam );
paint_button( hWnd, btn_type, ODA_SELECT );
}
if ((btn_type == BS_AUTORADIOBUTTON) && (wParam == BUTTON_CHECKED) && (style & WS_CHILD))
BUTTON_CheckAutoRadioButton( hWnd );
break;
case BM_GETSTATE16:
case BM_GETSTATE:
return get_button_state( hWnd );
case BM_SETSTATE16:
case BM_SETSTATE:
state = get_button_state( hWnd );
if (wParam)
{
if (state & BUTTON_HIGHLIGHTED) break;
set_button_state( hWnd, state | BUTTON_HIGHLIGHTED );
}
else
{
if (!(state & BUTTON_HIGHLIGHTED)) break;
set_button_state( hWnd, state & ~BUTTON_HIGHLIGHTED );
}
paint_button( hWnd, btn_type, ODA_SELECT );
break;
case WM_NCHITTEST:
if(btn_type == BS_GROUPBOX) return HTTRANSPARENT;
/* fall through */
default:
return unicode ? DefWindowProcW(hWnd, uMsg, wParam, lParam) :
DefWindowProcA(hWnd, uMsg, wParam, lParam);
}
return 0;
}
/***********************************************************************
* ButtonWndProcW
* The button window procedure. This is just a wrapper which locks
* the passed HWND and calls the real window procedure (with a WND*
* pointer pointing to the locked windowstructure).
*/
static LRESULT WINAPI ButtonWndProcW( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam )
{
if (!IsWindow( hWnd )) return 0;
return ButtonWndProc_common( hWnd, uMsg, wParam, lParam, TRUE );
}
/***********************************************************************
* ButtonWndProcA
*/
static LRESULT WINAPI ButtonWndProcA( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam )
{
if (!IsWindow( hWnd )) return 0;
return ButtonWndProc_common( hWnd, uMsg, wParam, lParam, FALSE );
}
/**********************************************************************
* Convert button styles to flags used by DrawText.
*/
static UINT BUTTON_BStoDT( DWORD style, DWORD ex_style )
{
UINT dtStyle = DT_NOCLIP; /* We use SelectClipRgn to limit output */
/* "Convert" pushlike buttons to pushbuttons */
if (style & BS_PUSHLIKE)
style &= ~0x0F;
if (!(style & BS_MULTILINE))
dtStyle |= DT_SINGLELINE;
else
dtStyle |= DT_WORDBREAK;
switch (style & BS_CENTER)
{
case BS_LEFT: /* DT_LEFT is 0 */ break;
case BS_RIGHT: dtStyle |= DT_RIGHT; break;
case BS_CENTER: dtStyle |= DT_CENTER; break;
default:
/* Pushbutton's text is centered by default */
if (get_button_type(style) <= BS_DEFPUSHBUTTON) dtStyle |= DT_CENTER;
/* all other flavours have left aligned text */
}
if (ex_style & WS_EX_RIGHT) dtStyle = DT_RIGHT | (dtStyle & ~(DT_LEFT | DT_CENTER));
/* DrawText ignores vertical alignment for multiline text,
* but we use these flags to align label manually.
*/
if (get_button_type(style) != BS_GROUPBOX)
{
switch (style & BS_VCENTER)
{
case BS_TOP: /* DT_TOP is 0 */ break;
case BS_BOTTOM: dtStyle |= DT_BOTTOM; break;
case BS_VCENTER: /* fall through */
default: dtStyle |= DT_VCENTER; break;
}
}
else
/* GroupBox's text is always single line and is top aligned. */
dtStyle |= DT_SINGLELINE;
return dtStyle;
}
/**********************************************************************
* BUTTON_CalcLabelRect
*
* Calculates label's rectangle depending on button style.
*
* Returns flags to be passed to DrawText.
* Calculated rectangle doesn't take into account button state
* (pushed, etc.). If there is nothing to draw (no text/image) output
* rectangle is empty, and return value is (UINT)-1.
*/
static UINT BUTTON_CalcLabelRect(HWND hwnd, HDC hdc, RECT *rc)
{
LONG style = GetWindowLongW( hwnd, GWL_STYLE );
LONG ex_style = GetWindowLongW( hwnd, GWL_EXSTYLE );
WCHAR *text;
ICONINFO iconInfo;
BITMAP bm;
UINT dtStyle = BUTTON_BStoDT( style, ex_style );
RECT r = *rc;
INT n;
/* Calculate label rectangle according to label type */
switch (style & (BS_ICON|BS_BITMAP))
{
case BS_TEXT:
if (!(text = get_button_text( hwnd ))) goto empty_rect;
if (!text[0])
{
HeapFree( GetProcessHeap(), 0, text );
goto empty_rect;
}
DrawTextW(hdc, text, -1, &r, dtStyle | DT_CALCRECT);
HeapFree( GetProcessHeap(), 0, text );
break;
case BS_ICON:
if (!GetIconInfo((HICON)GetWindowLongPtrW( hwnd, HIMAGE_GWL_OFFSET ), &iconInfo))
goto empty_rect;
GetObjectW (iconInfo.hbmColor, sizeof(BITMAP), &bm);
r.right = r.left + bm.bmWidth;
r.bottom = r.top + bm.bmHeight;
DeleteObject(iconInfo.hbmColor);
DeleteObject(iconInfo.hbmMask);
break;
case BS_BITMAP:
if (!GetObjectW( (HANDLE)GetWindowLongPtrW( hwnd, HIMAGE_GWL_OFFSET ), sizeof(BITMAP), &bm))
goto empty_rect;
r.right = r.left + bm.bmWidth;
r.bottom = r.top + bm.bmHeight;
break;
default:
empty_rect:
rc->right = r.left;
rc->bottom = r.top;
return (UINT)-1;
}
/* Position label inside bounding rectangle according to
* alignment flags. (calculated rect is always left-top aligned).
* If label is aligned to any side - shift label in opposite
* direction to leave extra space for focus rectangle.
*/
switch (dtStyle & (DT_CENTER|DT_RIGHT))
{
case DT_LEFT: r.left++; r.right++; break;
case DT_CENTER: n = r.right - r.left;
r.left = rc->left + ((rc->right - rc->left) - n) / 2;
r.right = r.left + n; break;
case DT_RIGHT: n = r.right - r.left;
r.right = rc->right - 1;
r.left = r.right - n;
break;
}
switch (dtStyle & (DT_VCENTER|DT_BOTTOM))
{
case DT_TOP: r.top++; r.bottom++; break;
case DT_VCENTER: n = r.bottom - r.top;
r.top = rc->top + ((rc->bottom - rc->top) - n) / 2;
r.bottom = r.top + n; break;
case DT_BOTTOM: n = r.bottom - r.top;
r.bottom = rc->bottom - 1;
r.top = r.bottom - n;
break;
}
*rc = r;
return dtStyle;
}
/**********************************************************************
* BUTTON_DrawTextCallback
*
* Callback function used by DrawStateW function.
*/
static BOOL CALLBACK BUTTON_DrawTextCallback(HDC hdc, LPARAM lp, WPARAM wp, int cx, int cy)
{
RECT rc;
rc.left = 0;
rc.top = 0;
rc.right = cx;
rc.bottom = cy;
DrawTextW(hdc, (LPCWSTR)lp, -1, &rc, (UINT)wp);
return TRUE;
}
/**********************************************************************
* BUTTON_DrawLabel
*
* Common function for drawing button label.
*/
static void BUTTON_DrawLabel(HWND hwnd, HDC hdc, UINT dtFlags, const RECT *rc)
{
DRAWSTATEPROC lpOutputProc = NULL;
LPARAM lp;
WPARAM wp = 0;
HBRUSH hbr = 0;
UINT flags = IsWindowEnabled(hwnd) ? DSS_NORMAL : DSS_DISABLED;
LONG state = get_button_state( hwnd );
LONG style = GetWindowLongW( hwnd, GWL_STYLE );
WCHAR *text = NULL;
/* FIXME: To draw disabled label in Win31 look-and-feel, we probably
* must use DSS_MONO flag and COLOR_GRAYTEXT brush (or maybe DSS_UNION).
* I don't have Win31 on hand to verify that, so I leave it as is.
*/
if ((style & BS_PUSHLIKE) && (state & BUTTON_3STATE))
{
hbr = GetSysColorBrush(COLOR_GRAYTEXT);
flags |= DSS_MONO;
}
switch (style & (BS_ICON|BS_BITMAP))
{
case BS_TEXT:
/* DST_COMPLEX -- is 0 */
lpOutputProc = BUTTON_DrawTextCallback;
if (!(text = get_button_text( hwnd ))) return;
lp = (LPARAM)text;
wp = (WPARAM)dtFlags;
break;
case BS_ICON:
flags |= DST_ICON;
lp = GetWindowLongPtrW( hwnd, HIMAGE_GWL_OFFSET );
break;
case BS_BITMAP:
flags |= DST_BITMAP;
lp = GetWindowLongPtrW( hwnd, HIMAGE_GWL_OFFSET );
break;
default:
return;
}
DrawStateW(hdc, hbr, lpOutputProc, lp, wp, rc->left, rc->top,
rc->right - rc->left, rc->bottom - rc->top, flags);
HeapFree( GetProcessHeap(), 0, text );
}
/**********************************************************************
* Push Button Functions
*/
static void PB_Paint( HWND hwnd, HDC hDC, UINT action )
{
RECT rc, focus_rect, r;
UINT dtFlags, uState;
HPEN hOldPen;
HBRUSH hOldBrush;
INT oldBkMode;
COLORREF oldTxtColor;
HFONT hFont;
LONG state = get_button_state( hwnd );
LONG style = GetWindowLongW( hwnd, GWL_STYLE );
BOOL pushedState = (state & BUTTON_HIGHLIGHTED);
HWND parent;
GetClientRect( hwnd, &rc );
/* Send WM_CTLCOLOR to allow changing the font (the colors are fixed) */
if ((hFont = get_button_font( hwnd ))) SelectObject( hDC, hFont );
parent = GetParent(hwnd);
if (!parent) parent = hwnd;
SendMessageW( parent, WM_CTLCOLORBTN, (WPARAM)hDC, (LPARAM)hwnd );
setup_clipping( hwnd, hDC );
hOldPen = SelectObject(hDC, SYSCOLOR_GetPen(COLOR_WINDOWFRAME));
hOldBrush = SelectObject(hDC,GetSysColorBrush(COLOR_BTNFACE));
oldBkMode = SetBkMode(hDC, TRANSPARENT);
if (get_button_type(style) == BS_DEFPUSHBUTTON)
{
Rectangle(hDC, rc.left, rc.top, rc.right, rc.bottom);
InflateRect( &rc, -1, -1 );
}
uState = DFCS_BUTTONPUSH | DFCS_ADJUSTRECT;
if (style & BS_FLAT)
uState |= DFCS_MONO;
else if (pushedState)
{
if (get_button_type(style) == BS_DEFPUSHBUTTON )
uState |= DFCS_FLAT;
else
uState |= DFCS_PUSHED;
}
if (state & (BUTTON_CHECKED | BUTTON_3STATE))
uState |= DFCS_CHECKED;
DrawFrameControl( hDC, &rc, DFC_BUTTON, uState );
focus_rect = rc;
/* draw button label */
r = rc;
dtFlags = BUTTON_CalcLabelRect(hwnd, hDC, &r);
if (dtFlags == (UINT)-1L)
goto cleanup;
if (pushedState)
OffsetRect(&r, 1, 1);
IntersectClipRect(hDC, rc.left, rc.top, rc.right, rc.bottom);
oldTxtColor = SetTextColor( hDC, GetSysColor(COLOR_BTNTEXT) );
BUTTON_DrawLabel(hwnd, hDC, dtFlags, &r);
SetTextColor( hDC, oldTxtColor );
if (state & BUTTON_HASFOCUS)
{
InflateRect( &focus_rect, -1, -1 );
IntersectRect(&focus_rect, &focus_rect, &rc);
DrawFocusRect( hDC, &focus_rect );
}
cleanup:
SelectObject( hDC, hOldPen );
SelectObject( hDC, hOldBrush );
SetBkMode(hDC, oldBkMode);
}
/**********************************************************************
* Check Box & Radio Button Functions
*/
static void CB_Paint( HWND hwnd, HDC hDC, UINT action )
{
RECT rbox, rtext, client;
HBRUSH hBrush;
int delta;
UINT dtFlags;
HFONT hFont;
LONG state = get_button_state( hwnd );
LONG style = GetWindowLongW( hwnd, GWL_STYLE );
HWND parent;
if (style & BS_PUSHLIKE)
{
PB_Paint( hwnd, hDC, action );
return;
}
GetClientRect(hwnd, &client);
rbox = rtext = client;
if ((hFont = get_button_font( hwnd ))) SelectObject( hDC, hFont );
parent = GetParent(hwnd);
if (!parent) parent = hwnd;
hBrush = (HBRUSH)SendMessageW(parent, WM_CTLCOLORSTATIC,
(WPARAM)hDC, (LPARAM)hwnd);
if (!hBrush) /* did the app forget to call defwindowproc ? */
hBrush = (HBRUSH)DefWindowProcW(parent, WM_CTLCOLORSTATIC,
(WPARAM)hDC, (LPARAM)hwnd );
setup_clipping( hwnd, hDC );
if (style & BS_LEFTTEXT)
{
/* magic +4 is what CTL3D expects */
rtext.right -= checkBoxWidth + 4;
rbox.left = rbox.right - checkBoxWidth;
}
else
{
rtext.left += checkBoxWidth + 4;
rbox.right = checkBoxWidth;
}
/* Since WM_ERASEBKGND does nothing, first prepare background */
if (action == ODA_SELECT) FillRect( hDC, &rbox, hBrush );
if (action == ODA_DRAWENTIRE) FillRect( hDC, &client, hBrush );
/* Draw label */
client = rtext;
dtFlags = BUTTON_CalcLabelRect(hwnd, hDC, &rtext);
/* Only adjust rbox when rtext is valid */
if (dtFlags != (UINT)-1L)
{
rbox.top = rtext.top;
rbox.bottom = rtext.bottom;
}
/* Draw the check-box bitmap */
if (action == ODA_DRAWENTIRE || action == ODA_SELECT)
{
UINT flags;
if ((get_button_type(style) == BS_RADIOBUTTON) ||
(get_button_type(style) == BS_AUTORADIOBUTTON)) flags = DFCS_BUTTONRADIO;
else if (state & BUTTON_3STATE) flags = DFCS_BUTTON3STATE;
else flags = DFCS_BUTTONCHECK;
if (state & (BUTTON_CHECKED | BUTTON_3STATE)) flags |= DFCS_CHECKED;
if (state & BUTTON_HIGHLIGHTED) flags |= DFCS_PUSHED;
if (style & WS_DISABLED) flags |= DFCS_INACTIVE;
/* rbox must have the correct height */
delta = rbox.bottom - rbox.top - checkBoxHeight;
if (style & BS_TOP) {
if (delta > 0) {
rbox.bottom = rbox.top + checkBoxHeight;
} else {
rbox.top -= -delta/2 + 1;
rbox.bottom = rbox.top + checkBoxHeight;
}
} else if (style & BS_BOTTOM) {
if (delta > 0) {
rbox.top = rbox.bottom - checkBoxHeight;
} else {
rbox.bottom += -delta/2 + 1;
rbox.top = rbox.bottom - checkBoxHeight;
}
} else { /* Default */
if (delta > 0) {
int ofs = (delta / 2);
rbox.bottom -= ofs + 1;
rbox.top = rbox.bottom - checkBoxHeight;
} else if (delta < 0) {
int ofs = (-delta / 2);
rbox.top -= ofs + 1;
rbox.bottom = rbox.top + checkBoxHeight;
}
}
DrawFrameControl( hDC, &rbox, DFC_BUTTON, flags );
}
if (dtFlags == (UINT)-1L) /* Noting to draw */
return;
if (action == ODA_DRAWENTIRE)
BUTTON_DrawLabel(hwnd, hDC, dtFlags, &rtext);
/* ... and focus */
if ((action == ODA_FOCUS) ||
((action == ODA_DRAWENTIRE) && (state & BUTTON_HASFOCUS)))
{
rtext.left--;
rtext.right++;
IntersectRect(&rtext, &rtext, &client);
DrawFocusRect( hDC, &rtext );
}
}
/**********************************************************************
* BUTTON_CheckAutoRadioButton
*
* hwnd is checked, uncheck every other auto radio button in group
*/
static void BUTTON_CheckAutoRadioButton( HWND hwnd )
{
HWND parent, sibling, start;
parent = GetParent(hwnd);
/* make sure that starting control is not disabled or invisible */
start = sibling = GetNextDlgGroupItem( parent, hwnd, TRUE );
do
{
if (!sibling) break;
if ((hwnd != sibling) &&
((GetWindowLongW( sibling, GWL_STYLE) & 0x0f) == BS_AUTORADIOBUTTON))
SendMessageW( sibling, BM_SETCHECK, BUTTON_UNCHECKED, 0 );
sibling = GetNextDlgGroupItem( parent, sibling, FALSE );
} while (sibling != start);
}
/**********************************************************************
* Group Box Functions
*/
static void GB_Paint( HWND hwnd, HDC hDC, UINT action )
{
RECT rc, rcFrame;
HBRUSH hbr;
HFONT hFont;
UINT dtFlags;
TEXTMETRICW tm;
LONG style = GetWindowLongW( hwnd, GWL_STYLE );
HWND parent;
if ((hFont = get_button_font( hwnd ))) SelectObject( hDC, hFont );
/* GroupBox acts like static control, so it sends CTLCOLORSTATIC */
parent = GetParent(hwnd);
if (!parent) parent = hwnd;
hbr = (HBRUSH)SendMessageW(parent, WM_CTLCOLORSTATIC, (WPARAM)hDC, (LPARAM)hwnd);
if (!hbr) /* did the app forget to call defwindowproc ? */
hbr = (HBRUSH)DefWindowProcW(parent, WM_CTLCOLORSTATIC,
(WPARAM)hDC, (LPARAM)hwnd);
setup_clipping( hwnd, hDC );
GetClientRect( hwnd, &rc);
rcFrame = rc;
GetTextMetricsW (hDC, &tm);
rcFrame.top += (tm.tmHeight / 2) - 1;
DrawEdge (hDC, &rcFrame, EDGE_ETCHED, BF_RECT | ((style & BS_FLAT) ? BF_FLAT : 0));
InflateRect(&rc, -7, 1);
dtFlags = BUTTON_CalcLabelRect(hwnd, hDC, &rc);
if (dtFlags == (UINT)-1L)
return;
/* Because buttons have CS_PARENTDC class style, there is a chance
* that label will be drawn out of client rect.
* But Windows doesn't clip label's rect, so do I.
*/
/* There is 1-pixel margin at the left, right, and bottom */
rc.left--; rc.right++; rc.bottom++;
FillRect(hDC, &rc, hbr);
rc.left++; rc.right--; rc.bottom--;
BUTTON_DrawLabel(hwnd, hDC, dtFlags, &rc);
}
/**********************************************************************
* User Button Functions
*/
static void UB_Paint( HWND hwnd, HDC hDC, UINT action )
{
RECT rc;
HBRUSH hBrush;
HFONT hFont;
LONG state = get_button_state( hwnd );
HWND parent;
if (action == ODA_SELECT) return;
GetClientRect( hwnd, &rc);
if ((hFont = get_button_font( hwnd ))) SelectObject( hDC, hFont );
parent = GetParent(hwnd);
if (!parent) parent = hwnd;
hBrush = (HBRUSH)SendMessageW(parent, WM_CTLCOLORBTN, (WPARAM)hDC, (LPARAM)hwnd);
if (!hBrush) /* did the app forget to call defwindowproc ? */
hBrush = (HBRUSH)DefWindowProcW(parent, WM_CTLCOLORBTN,
(WPARAM)hDC, (LPARAM)hwnd);
FillRect( hDC, &rc, hBrush );
if ((action == ODA_FOCUS) ||
((action == ODA_DRAWENTIRE) && (state & BUTTON_HASFOCUS)))
DrawFocusRect( hDC, &rc );
}
/**********************************************************************
* Ownerdrawn Button Functions
*/
static void OB_Paint( HWND hwnd, HDC hDC, UINT action )
{
LONG state = get_button_state( hwnd );
DRAWITEMSTRUCT dis;
LONG_PTR id = GetWindowLongPtrW( hwnd, GWLP_ID );
HWND parent;
HFONT hFont, hPrevFont = 0;
dis.CtlType = ODT_BUTTON;
dis.CtlID = id;
dis.itemID = 0;
dis.itemAction = action;
dis.itemState = ((state & BUTTON_HASFOCUS) ? ODS_FOCUS : 0) |
((state & BUTTON_HIGHLIGHTED) ? ODS_SELECTED : 0) |
(IsWindowEnabled(hwnd) ? 0: ODS_DISABLED);
dis.hwndItem = hwnd;
dis.hDC = hDC;
dis.itemData = 0;
GetClientRect( hwnd, &dis.rcItem );
if ((hFont = get_button_font( hwnd ))) hPrevFont = SelectObject( hDC, hFont );
parent = GetParent(hwnd);
if (!parent) parent = hwnd;
SendMessageW( parent, WM_CTLCOLORBTN, (WPARAM)hDC, (LPARAM)hwnd );
setup_clipping( hwnd, hDC );
SendMessageW( GetParent(hwnd), WM_DRAWITEM, id, (LPARAM)&dis );
if (hPrevFont) SelectObject(hDC, hPrevFont);
}
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