dll/win32/comctl32/theme_edit.c

   1 /*
   2  * Theming - Edit 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 "comctl32.h"
  23
  24 /* Draw themed border */
  25 static void nc_paint (HTHEME theme, HWND hwnd, HRGN region)
  26 {
  27     HRGN cliprgn = region;
  28     DWORD exStyle = GetWindowLongW (hwnd, GWL_EXSTYLE);
  29     if (exStyle & WS_EX_CLIENTEDGE)
  30     {
  31         HDC dc;
  32         RECT r;
  33         int cxEdge = GetSystemMetrics (SM_CXEDGE),
  34             cyEdge = GetSystemMetrics (SM_CYEDGE);
  35         int part = EP_EDITTEXT;
  36         int state = ETS_NORMAL;
  37         DWORD dwStyle = GetWindowLongW (hwnd, GWL_STYLE);
  38
  39         if (!IsWindowEnabled (hwnd))
  40             state = ETS_DISABLED;
  41         else if (dwStyle & ES_READONLY)
  42             state = ETS_READONLY;
  43         else if (GetFocus() == hwnd)
  44             state = ETS_FOCUSED;
  45
  46         GetWindowRect(hwnd, &r);
  47
  48         /* New clipping region passed to default proc to exclude border */
  49         cliprgn = CreateRectRgn (r.left + cxEdge, r.top + cyEdge,
  50             r.right - cxEdge, r.bottom - cyEdge);
  51         if (region != (HRGN)1)
  52             CombineRgn (cliprgn, cliprgn, region, RGN_AND);
  53         OffsetRect(&r, -r.left, -r.top);
  54
  55         dc = GetDCEx(hwnd, region, DCX_WINDOW|DCX_INTERSECTRGN);
  56         OffsetRect(&r, -r.left, -r.top);
  57
  58         if (IsThemeBackgroundPartiallyTransparent (theme, part, state))
  59             DrawThemeParentBackground(hwnd, dc, &r);
  60         DrawThemeBackground (theme, dc, part, state, &r, 0);
  61         ReleaseDC(hwnd, dc);
  62     }
  63
  64     /* Call default proc to get the scrollbars etc. also painted */
  65     DefWindowProcW (hwnd, WM_NCPAINT, (WPARAM)cliprgn, 0);
  66 }
  67
  68 /**********************************************************************
  69  * The edit control subclass window proc.
  70  */
  71 LRESULT CALLBACK THEMING_EditSubclassProc (HWND hwnd, UINT msg,
  72                                            WPARAM wParam, LPARAM lParam,
  73                                            ULONG_PTR dwRefData)
  74 {
  75     const WCHAR* themeClass = WC_EDITW;
  76     HTHEME theme;
  77     LRESULT result;
  78
  79     switch (msg)
  80     {
  81     case WM_CREATE:
  82         result = THEMING_CallOriginalClass  (hwnd, msg, wParam, lParam);
  83         OpenThemeData( hwnd, themeClass );
  84         return result;
  85
  86     case WM_DESTROY:
  87         theme = GetWindowTheme( hwnd );
  88         CloseThemeData ( theme );
  89         return THEMING_CallOriginalClass (hwnd, msg, wParam, lParam);
  90
  91     case WM_THEMECHANGED:
  92         theme = GetWindowTheme( hwnd );
  93         CloseThemeData ( theme );
  94         OpenThemeData( hwnd, themeClass );
  95         break;
  96
  97     case WM_SYSCOLORCHANGE:
  98         theme = GetWindowTheme( hwnd );
  99         if (!theme) return THEMING_CallOriginalClass (hwnd, msg, wParam, lParam);
 100         /* Do nothing. When themed, a WM_THEMECHANGED will be received, too,
 101          * which will do the repaint. */
 102         break;
 103
 104     case WM_NCPAINT:
 105         theme = GetWindowTheme( hwnd );
 106         if (!theme) return THEMING_CallOriginalClass (hwnd, msg, wParam, lParam);
 107         nc_paint (theme, hwnd, (HRGN)wParam);
 108         break;
 109
 110     case WM_ENABLE:
 111         theme = GetWindowTheme( hwnd );
 112         if (theme) RedrawWindow (hwnd, NULL, NULL,
 113             RDW_FRAME | RDW_INVALIDATE | RDW_UPDATENOW);
 114         return THEMING_CallOriginalClass (hwnd, msg, wParam, lParam);
 115
 116     default:
 117         /* Call old proc */
 118         return THEMING_CallOriginalClass (hwnd, msg, wParam, lParam);
 119     }
 120     return 0;
 121 }