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320 lines
9.8 KiB
C
320 lines
9.8 KiB
C
/*
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* Theming - Combo box control
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*
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* Copyright (c) 2005 by Frank Richter
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*
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*/
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#include <stdarg.h>
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#include <string.h>
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#include <stdlib.h>
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#include "windef.h"
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#include "winbase.h"
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#include "wingdi.h"
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#include "winuser.h"
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#include "uxtheme.h"
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#include "tmschema.h"
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#include "comctl32.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(themingcombo);
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/* Subclass-private state flags */
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#define STATE_NOREDRAW 1
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#define STATE_HOT 2
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/* some constants for metrics, same as in user32 */
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#define COMBO_XBORDERSIZE 2
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#define COMBO_YBORDERSIZE 2
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#define COMBO_EDITBUTTONSPACE 0
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#define EDIT_CONTROL_PADDING 1
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/* paint text of combobox, needed for read-only drop downs. */
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static void paint_text (HWND hwnd, HDC hdc, DWORD dwStyle, COMBOBOXINFO* cbi)
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{
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INT id, size = 0;
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LPWSTR pText = NULL;
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UINT itemState = ODS_COMBOBOXEDIT;
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HFONT font = (HFONT)SendMessageW (hwnd, WM_GETFONT, 0, 0);
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HFONT hPrevFont = (font) ? SelectObject(hdc, font) : 0;
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RECT rectEdit;
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BOOL focused = GetFocus () == hwnd;
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BOOL dropped = cbi->stateButton == STATE_SYSTEM_PRESSED;
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TRACE("\n");
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/* follow Windows combobox that sends a bunch of text
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* inquiries to its listbox while processing WM_PAINT. */
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if( (id = SendMessageW (cbi->hwndList, LB_GETCURSEL, 0, 0) ) != LB_ERR )
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{
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size = SendMessageW (cbi->hwndList, LB_GETTEXTLEN, id, 0);
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if (size == LB_ERR)
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FIXME("LB_ERR probably not handled yet\n");
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if( (pText = HeapAlloc( GetProcessHeap(), 0, (size + 1) * sizeof(WCHAR))) )
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{
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/* size from LB_GETTEXTLEN may be too large, from LB_GETTEXT is accurate */
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size=SendMessageW (cbi->hwndList, LB_GETTEXT, (WPARAM)id, (LPARAM)pText);
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pText[size] = '\0'; /* just in case */
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} else return;
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}
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else
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if( !(dwStyle & (CBS_OWNERDRAWFIXED | CBS_OWNERDRAWVARIABLE)) )
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return;
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/*
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* Give ourselves some space.
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*/
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CopyRect (&rectEdit, &cbi->rcItem);
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InflateRect( &rectEdit, -1, -1 );
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if(dwStyle & (CBS_OWNERDRAWFIXED | CBS_OWNERDRAWVARIABLE))
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{
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DRAWITEMSTRUCT dis;
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HRGN clipRegion;
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UINT ctlid = (UINT)GetWindowLongPtrW( hwnd, GWLP_ID );
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/* setup state for DRAWITEM message. Owner will highlight */
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if ( focused && !dropped )
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itemState |= ODS_SELECTED | ODS_FOCUS;
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/*
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* Save the current clip region.
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* To retrieve the clip region, we need to create one "dummy"
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* clip region.
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*/
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clipRegion = CreateRectRgnIndirect(&rectEdit);
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if (GetClipRgn(hdc, clipRegion)!=1)
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{
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DeleteObject(clipRegion);
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clipRegion=NULL;
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}
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if (!IsWindowEnabled(hwnd) & WS_DISABLED) itemState |= ODS_DISABLED;
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dis.CtlType = ODT_COMBOBOX;
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dis.CtlID = ctlid;
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dis.hwndItem = hwnd;
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dis.itemAction = ODA_DRAWENTIRE;
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dis.itemID = id;
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dis.itemState = itemState;
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dis.hDC = hdc;
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dis.rcItem = rectEdit;
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dis.itemData = SendMessageW(cbi->hwndList, LB_GETITEMDATA,
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(WPARAM)id, 0 );
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/*
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* Clip the DC and have the parent draw the item.
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*/
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IntersectClipRect(hdc,
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rectEdit.left, rectEdit.top,
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rectEdit.right, rectEdit.bottom);
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SendMessageW(GetParent (hwnd), WM_DRAWITEM, ctlid, (LPARAM)&dis );
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/*
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* Reset the clipping region.
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*/
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SelectClipRgn(hdc, clipRegion);
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}
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else
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{
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static const WCHAR empty_stringW[] = { 0 };
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if ( focused && !dropped ) {
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/* highlight */
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FillRect( hdc, &rectEdit, GetSysColorBrush(COLOR_HIGHLIGHT) );
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SetBkColor( hdc, GetSysColor( COLOR_HIGHLIGHT ) );
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SetTextColor( hdc, GetSysColor( COLOR_HIGHLIGHTTEXT ) );
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}
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ExtTextOutW( hdc,
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rectEdit.left + 1,
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rectEdit.top + 1,
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ETO_OPAQUE | ETO_CLIPPED,
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&rectEdit,
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pText ? pText : empty_stringW , size, NULL );
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if ( focused && !dropped )
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DrawFocusRect( hdc, &rectEdit );
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}
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if( hPrevFont )
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SelectObject(hdc, hPrevFont );
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HeapFree( GetProcessHeap(), 0, pText );
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}
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/* paint the combobox */
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static LRESULT paint (HTHEME theme, HWND hwnd, HDC hParamDC, ULONG state)
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{
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PAINTSTRUCT ps;
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HDC hDC;
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COMBOBOXINFO cbi;
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DWORD dwStyle = GetWindowLongW (hwnd, GWL_STYLE);
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hDC = (hParamDC) ? hParamDC
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: BeginPaint( hwnd, &ps);
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TRACE("hdc=%p\n", hDC);
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if( hDC && !(state & STATE_NOREDRAW) )
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{
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RECT frameRect;
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int buttonState;
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cbi.cbSize = sizeof (cbi);
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SendMessageW (hwnd, CB_GETCOMBOBOXINFO, 0, (LPARAM)&cbi);
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/* paint border */
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if ((dwStyle & CBS_DROPDOWNLIST) != CBS_SIMPLE)
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GetClientRect (hwnd, &frameRect);
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else
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{
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CopyRect (&frameRect, &cbi.rcItem);
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InflateRect(&frameRect,
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EDIT_CONTROL_PADDING + COMBO_XBORDERSIZE,
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EDIT_CONTROL_PADDING + COMBO_YBORDERSIZE);
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}
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DrawThemeBackground (theme, hDC, 0,
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IsWindowEnabled (hwnd) ? CBXS_NORMAL : CBXS_DISABLED, &frameRect, NULL);
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/* paint button */
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if (cbi.stateButton != STATE_SYSTEM_INVISIBLE)
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{
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if (!IsWindowEnabled (hwnd))
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buttonState = CBXS_DISABLED;
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else if (cbi.stateButton == STATE_SYSTEM_PRESSED)
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buttonState = CBXS_PRESSED;
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else if (state & STATE_HOT)
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buttonState = CBXS_HOT;
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else
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buttonState = CBXS_NORMAL;
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DrawThemeBackground (theme, hDC, CP_DROPDOWNBUTTON, buttonState,
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&cbi.rcButton, NULL);
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}
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/* paint text, if we need to */
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if ((dwStyle & CBS_DROPDOWNLIST) == CBS_DROPDOWNLIST)
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paint_text (hwnd, hDC, dwStyle, &cbi);
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}
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if( !hParamDC )
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EndPaint(hwnd, &ps);
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return 0;
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}
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/**********************************************************************
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* The combo control subclass window proc.
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*/
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LRESULT CALLBACK THEMING_ComboSubclassProc (HWND hwnd, UINT msg,
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WPARAM wParam, LPARAM lParam,
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ULONG_PTR dwRefData)
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{
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const WCHAR* themeClass = WC_COMBOBOXW;
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HTHEME theme;
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LRESULT result;
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switch (msg)
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{
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case WM_CREATE:
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result = THEMING_CallOriginalClass (hwnd, msg, wParam, lParam);
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OpenThemeData( hwnd, themeClass );
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return result;
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case WM_DESTROY:
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theme = GetWindowTheme( hwnd );
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CloseThemeData ( theme );
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return THEMING_CallOriginalClass (hwnd, msg, wParam, lParam);
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case WM_THEMECHANGED:
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theme = GetWindowTheme( hwnd );
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CloseThemeData ( theme );
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OpenThemeData( hwnd, themeClass );
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break;
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case WM_SYSCOLORCHANGE:
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theme = GetWindowTheme( hwnd );
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if (!theme) return THEMING_CallOriginalClass (hwnd, msg, wParam, lParam);
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/* Do nothing. When themed, a WM_THEMECHANGED will be received, too,
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* which will do the repaint. */
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break;
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case WM_PAINT:
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theme = GetWindowTheme( hwnd );
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if (!theme) return THEMING_CallOriginalClass (hwnd, msg, wParam, lParam);
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return paint (theme, hwnd, (HDC)wParam, dwRefData);
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case WM_SETREDRAW:
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/* Since there doesn't seem to be WM_GETREDRAW, do redraw tracking in
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* the subclass as well. */
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if( wParam )
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dwRefData &= ~STATE_NOREDRAW;
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else
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dwRefData |= STATE_NOREDRAW;
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THEMING_SetSubclassData (hwnd, dwRefData);
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return THEMING_CallOriginalClass (hwnd, msg, wParam, lParam);
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case WM_MOUSEMOVE:
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{
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/* Dropdown button hot-tracking */
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COMBOBOXINFO cbi;
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POINT pt = {LOWORD(lParam), HIWORD(lParam)};
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cbi.cbSize = sizeof (cbi);
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SendMessageW (hwnd, CB_GETCOMBOBOXINFO, 0, (LPARAM)&cbi);
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if (cbi.stateButton != STATE_SYSTEM_INVISIBLE)
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{
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if (PtInRect (&cbi.rcButton, pt))
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{
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if (!(dwRefData & STATE_HOT))
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{
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dwRefData |= STATE_HOT;
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THEMING_SetSubclassData (hwnd, dwRefData);
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RedrawWindow (hwnd, &cbi.rcButton, 0,
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RDW_INVALIDATE | RDW_UPDATENOW);
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}
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}
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else
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{
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if (dwRefData & STATE_HOT)
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{
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dwRefData &= ~STATE_HOT;
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THEMING_SetSubclassData (hwnd, dwRefData);
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RedrawWindow (hwnd, &cbi.rcButton, 0,
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RDW_INVALIDATE | RDW_UPDATENOW);
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}
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}
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}
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}
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return THEMING_CallOriginalClass (hwnd, msg, wParam, lParam);
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default:
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/* Call old proc */
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return THEMING_CallOriginalClass (hwnd, msg, wParam, lParam);
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}
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return 0;
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}
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