dlls/uxtheme/window.c

   1 /*
   2  * Window theming support
   3  *
   4  * Copyright 2022 Zhiyi Zhang for CodeWeavers
   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 #include <stdarg.h>
  22
  23 #include "windef.h"
  24 #include "winbase.h"
  25 #include "wingdi.h"
  26 #include "winuser.h"
  27 #include "uxthemedll.h"
  28 #include "vssym32.h"
  29
  30 static void uxtheme_draw_menu_button(HTHEME theme, HWND hwnd, HDC hdc, enum NONCLIENT_BUTTON_TYPE type,
  31                                      RECT rect, BOOL down, BOOL grayed)
  32 {
  33     int part, state;
  34
  35     switch (type)
  36     {
  37     case MENU_CLOSE_BUTTON:
  38         part = WP_MDICLOSEBUTTON;
  39         break;
  40     case MENU_MIN_BUTTON:
  41         part = WP_MDIMINBUTTON;
  42         break;
  43     case MENU_RESTORE_BUTTON:
  44         part = WP_MDIRESTOREBUTTON;
  45         break;
  46     case MENU_HELP_BUTTON:
  47         part = WP_MDIHELPBUTTON;
  48         break;
  49     /* There is no WP_MDIMAXBUTTON */
  50     default:
  51         user_api.pNonClientButtonDraw(hwnd, hdc, type, rect, down, grayed);
  52         return;
  53     }
  54
  55     if (grayed)
  56         state = MINBS_DISABLED;
  57     else if (down)
  58         state = MINBS_PUSHED;
  59     else
  60         state = MINBS_NORMAL;
  61
  62     if (IsThemeBackgroundPartiallyTransparent(theme, part, state))
  63         DrawThemeParentBackground(hwnd, hdc, &rect);
  64     DrawThemeBackground(theme, hdc, part, state, &rect, NULL);
  65 }
  66
  67 void WINAPI UXTHEME_NonClientButtonDraw(HWND hwnd, HDC hdc, enum NONCLIENT_BUTTON_TYPE type,
  68                                         RECT rect, BOOL down, BOOL grayed)
  69 {
  70     HTHEME theme;
  71
  72     theme = OpenThemeDataForDpi(NULL, L"Window", GetDpiForWindow(hwnd));
  73     if (!theme)
  74     {
  75         user_api.pNonClientButtonDraw(hwnd, hdc, type, rect, down, grayed);
  76         return;
  77     }
  78
  79     switch (type)
  80     {
  81     case MENU_CLOSE_BUTTON:
  82     case MENU_MIN_BUTTON:
  83     case MENU_MAX_BUTTON:
  84     case MENU_RESTORE_BUTTON:
  85     case MENU_HELP_BUTTON:
  86         uxtheme_draw_menu_button(theme, hwnd, hdc, type, rect, down, grayed);
  87         break;
  88     }
  89
  90     CloseThemeData(theme);
  91 }