Zhiyi Zhang : uxtheme: Support drawing themed menu buttons.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 736ae290c93fc933ca9707b59e973777b49d8424
URL:    https://gitlab.winehq.org/wine/wine/-/commit/736ae290c93fc933ca9707b59e97377...

Author: Zhiyi Zhang 
Date:   Sun Oct 23 22:36:47 2022 +0800

uxtheme: Support drawing themed menu buttons.

---

dlls/uxtheme/window.c | 61 ++++++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 60 insertions(+), 1 deletion(-)

diff --git a/dlls/uxtheme/window.c b/dlls/uxtheme/window.c
index d94bd8425c7..d059a85b297 100644
--- a/dlls/uxtheme/window.c
+++ b/dlls/uxtheme/window.c
@@ -22,11 +22,70 @@

#include "windef.h"
 #include "winbase.h"
+#include "wingdi.h"
 #include "winuser.h"
 #include "uxthemedll.h"
+#include "vssym32.h"
+
+static void uxtheme_draw_menu_button(HTHEME theme, HWND hwnd, HDC hdc, enum NONCLIENT_BUTTON_TYPE type,
+                                     RECT rect, BOOL down, BOOL grayed)
+{
+    int part, state;
+
+    switch (type)
+    {
+    case MENU_CLOSE_BUTTON:
+        part = WP_MDICLOSEBUTTON;
+        break;
+    case MENU_MIN_BUTTON:
+        part = WP_MDIMINBUTTON;
+        break;
+    case MENU_RESTORE_BUTTON:
+        part = WP_MDIRESTOREBUTTON;
+        break;
+    case MENU_HELP_BUTTON:
+        part = WP_MDIHELPBUTTON;
+        break;
+    /* There is no WP_MDIMAXBUTTON */
+    default:
+        user_api.pNonClientButtonDraw(hwnd, hdc, type, rect, down, grayed);
+        return;
+    }
+
+    if (grayed)
+        state = MINBS_DISABLED;
+    else if (down)
+        state = MINBS_PUSHED;
+    else
+        state = MINBS_NORMAL;
+
+    if (IsThemeBackgroundPartiallyTransparent(theme, part, state))
+        DrawThemeParentBackground(hwnd, hdc, &rect);
+    DrawThemeBackground(theme, hdc, part, state, &rect, NULL);
+}

void WINAPI UXTHEME_NonClientButtonDraw(HWND hwnd, HDC hdc, enum NONCLIENT_BUTTON_TYPE type,
                                         RECT rect, BOOL down, BOOL grayed)
 {
-    user_api.pNonClientButtonDraw(hwnd, hdc, type, rect, down, grayed);
+    HTHEME theme;
+
+    theme = OpenThemeDataForDpi(NULL, L"Window", GetDpiForWindow(hwnd));
+    if (!theme)
+    {
+        user_api.pNonClientButtonDraw(hwnd, hdc, type, rect, down, grayed);
+        return;
+    }
+
+    switch (type)
+    {
+    case MENU_CLOSE_BUTTON:
+    case MENU_MIN_BUTTON:
+    case MENU_MAX_BUTTON:
+    case MENU_RESTORE_BUTTON:
+    case MENU_HELP_BUTTON:
+        uxtheme_draw_menu_button(theme, hwnd, hdc, type, rect, down, grayed);
+        break;
+    }
+
+    CloseThemeData(theme);
 }