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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, 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 /* Draw themed border */
  36 static void nc_paint (HTHEME theme, HWND hwnd, HRGN region)
  37 {
  38     HRGN cliprgn = region;
  39     DWORD exStyle = GetWindowLongW (hwnd, GWL_EXSTYLE);
  40     if (exStyle & WS_EX_CLIENTEDGE)
  41     {
  42         HDC dc;
  43         RECT r;
  44         int cxEdge = GetSystemMetrics (SM_CXEDGE),
  45             cyEdge = GetSystemMetrics (SM_CYEDGE);
  46
  47         GetWindowRect(hwnd, &r);
  48
  49         /* New clipping region passed to default proc to exclude border */
  50         cliprgn = CreateRectRgn (r.left + cxEdge, r.top + cyEdge,
  51             r.right - cxEdge, r.bottom - cyEdge);
  52         if (region != (HRGN)1)
  53             CombineRgn (cliprgn, cliprgn, region, RGN_AND);
  54         OffsetRect(&r, -r.left, -r.top);
  55
  56         dc = GetDCEx(hwnd, region, DCX_WINDOW|DCX_INTERSECTRGN);
  57         OffsetRect(&r, -r.left, -r.top);
  58
  59         if (IsThemeBackgroundPartiallyTransparent (theme, 0, 0))
  60             DrawThemeParentBackground(hwnd, dc, &r);
  61         DrawThemeBackground (theme, dc, 0, 0, &r, 0);
  62         ReleaseDC(hwnd, dc);
  63     }
  64
  65     /* Call default proc to get the scrollbars etc. painted */
  66     DefWindowProcW (hwnd, WM_NCPAINT, (WPARAM)cliprgn, 0);
  67 }
  68
  69 /**********************************************************************
  70  * The list control subclass window proc.
  71  */
  72 LRESULT CALLBACK THEMING_ListBoxSubclassProc (HWND hwnd, UINT msg,
  73                                               WPARAM wParam, LPARAM lParam,
  74                                               ULONG_PTR dwRefData)
  75 {
  76     const WCHAR* themeClass = WC_LISTBOXW;
  77     HTHEME theme;
  78     LRESULT result;
  79
  80     switch (msg)
  81     {
  82     case WM_CREATE:
  83         result = THEMING_CallOriginalClass  (hwnd, msg, wParam, lParam);
  84         OpenThemeData( hwnd, themeClass );
  85         return result;
  86
  87     case WM_DESTROY:
  88         theme = GetWindowTheme( hwnd );
  89         CloseThemeData ( theme );
  90         return THEMING_CallOriginalClass (hwnd, msg, wParam, lParam);
  91
  92     case WM_THEMECHANGED:
  93         theme = GetWindowTheme( hwnd );
  94         CloseThemeData ( theme );
  95         OpenThemeData( hwnd, themeClass );
  96         break;
  97
  98     case WM_SYSCOLORCHANGE:
  99         theme = GetWindowTheme( hwnd );
 100         if (!theme) return THEMING_CallOriginalClass (hwnd, msg, wParam, lParam);
 101         /* Do nothing. When themed, a WM_THEMECHANGED will be received, too,
 102          * which will do the repaint. */
 103         break;
 104
 105     case WM_NCPAINT:
 106         theme = GetWindowTheme( hwnd );
 107         if (!theme) return THEMING_CallOriginalClass (hwnd, msg, wParam, lParam);
 108         nc_paint (theme, hwnd, (HRGN)wParam);
 109         break;
 110
 111     default:
 112         /* Call old proc */
 113         return THEMING_CallOriginalClass (hwnd, msg, wParam, lParam);
 114     }
 115     return 0;
 116 }