reactos/dll/win32/comctl32/theme_listbox.c

   1 /*
   2  * Theming - List box control
   3  *
   4  * Copyright (c) 2005 by Frank Richter
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  *
  20  */
  21
  22 #include <stdarg.h>
  23 #include <string.h>
  24 #include <stdlib.h>
  25
  26 #include "windef.h"
  27 #include "winbase.h"
  28 #include "wingdi.h"
  29 #include "winuser.h"
  30 #include "uxtheme.h"
  31 #include "tmschema.h"
  32 #include "comctl32.h"
  33 #include "wine/debug.h"
  34
  35 WINE_DEFAULT_DEBUG_CHANNEL(theminglistbox);
  36
  37 /* Draw themed border */
  38 static void nc_paint (HTHEME theme, HWND hwnd, HRGN region)
  39 {
  40     HRGN cliprgn = region;
  41     DWORD exStyle = GetWindowLongW (hwnd, GWL_EXSTYLE);
  42     if (exStyle & WS_EX_CLIENTEDGE)
  43     {
  44         HDC dc;
  45         RECT r;
  46         int cxEdge = GetSystemMetrics (SM_CXEDGE),
  47             cyEdge = GetSystemMetrics (SM_CYEDGE);
  48
  49         GetWindowRect(hwnd, &r);
  50
  51         /* New clipping region passed to default proc to exclude border */
  52         cliprgn = CreateRectRgn (r.left + cxEdge, r.top + cyEdge,
  53             r.right - cxEdge, r.bottom - cyEdge);
  54         if (region != (HRGN)1)
  55             CombineRgn (cliprgn, cliprgn, region, RGN_AND);
  56         OffsetRect(&r, -r.left, -r.top);
  57
  58         dc = GetDCEx(hwnd, region, DCX_WINDOW|DCX_INTERSECTRGN);
  59         OffsetRect(&r, -r.left, -r.top);
  60
  61         if (IsThemeBackgroundPartiallyTransparent (theme, 0, 0))
  62             DrawThemeParentBackground(hwnd, dc, &r);
  63         DrawThemeBackground (theme, dc, 0, 0, &r, 0);
  64         ReleaseDC(hwnd, dc);
  65     }
  66
  67     /* Call default proc to get the scrollbars etc. painted */
  68     DefWindowProcW (hwnd, WM_NCPAINT, (WPARAM)cliprgn, 0);
  69 }
  70
  71 /**********************************************************************
  72  * The list control subclass window proc.
  73  */
  74 LRESULT CALLBACK THEMING_ListBoxSubclassProc (HWND hwnd, UINT msg,
  75                                               WPARAM wParam, LPARAM lParam,
  76                                               ULONG_PTR dwRefData)
  77 {
  78     const WCHAR* themeClass = WC_LISTBOXW;
  79     HTHEME theme;
  80     LRESULT result;
  81
  82     switch (msg)
  83     {
  84     case WM_CREATE:
  85         result = THEMING_CallOriginalClass  (hwnd, msg, wParam, lParam);
  86         OpenThemeData( hwnd, themeClass );
  87         return result;
  88
  89     case WM_DESTROY:
  90         theme = GetWindowTheme( hwnd );
  91         CloseThemeData ( theme );
  92         return THEMING_CallOriginalClass (hwnd, msg, wParam, lParam);
  93
  94     case WM_THEMECHANGED:
  95         theme = GetWindowTheme( hwnd );
  96         CloseThemeData ( theme );
  97         OpenThemeData( hwnd, themeClass );
  98         break;
  99
 100     case WM_SYSCOLORCHANGE:
 101         theme = GetWindowTheme( hwnd );
 102         if (!theme) return THEMING_CallOriginalClass (hwnd, msg, wParam, lParam);
 103         /* Do nothing. When themed, a WM_THEMECHANGED will be received, too,
 104          * which will do the repaint. */
 105         break;
 106
 107     case WM_NCPAINT:
 108         theme = GetWindowTheme( hwnd );
 109         if (!theme) return THEMING_CallOriginalClass (hwnd, msg, wParam, lParam);
 110         nc_paint (theme, hwnd, (HRGN)wParam);
 111         break;
 112
 113     default:
 114         /* Call old proc */
 115         return THEMING_CallOriginalClass (hwnd, msg, wParam, lParam);
 116     }
 117     return 0;
 118 }