Support for unthemed taskbar (#2369)

* Support for unthemed taskbar

See this discussion:
https://github.com/Open-Shell/Open-Shell-Menu/discussions/2367

* Refactor color handling in StartMenuDLL

Src/Lib/ResourceHelper.cpp

@@ -384,14 +384,14 @@ HICON CreateDisabledIcon( HICON hIcon, int iconSize )
 }
 
 // Loads an image file into a bitmap and optionally resizes it
-HBITMAP LoadImageFile( const wchar_t *path, const SIZE *pSize, bool bUseAlpha, bool bPremultiply, std::vector<unsigned int> *pButtonAnim )
+HBITMAP LoadImageFile( const wchar_t *path, const SIZE *pSize, bool bUseAlpha, bool bPremultiply, std::vector<unsigned int> *pButtonAnim, UINT dpi )
 {
 	HBITMAP srcBmp=NULL;
 	if (_wcsicmp(PathFindExtension(path),L".bmp")==0)
 	{
 		srcBmp=(HBITMAP)LoadImage(NULL,path,IMAGE_BITMAP,0,0,LR_CREATEDIBSECTION|LR_LOADFROMFILE);
 	}
-	if (srcBmp && !pSize)
+	if (srcBmp && !pSize && !dpi)
 		return srcBmp;
 	CComPtr<IWICImagingFactory> pFactory;
 	if (FAILED(pFactory.CoCreateInstance(CLSID_WICImagingFactory)))
@@ -482,6 +482,12 @@ HBITMAP LoadImageFile( const wchar_t *path, const SIZE *pSize, bool bUseAlpha, b
 			else
 				frameHeightD=frameWidthD*frameHeightS/frameWidthS;
 		}
+
+		if (dpi)
+		{
+			frameWidthD=ScaleForDpi(dpi,frameWidthD);
+			frameHeightD=ScaleForDpi(dpi,frameHeightD);
+		}
 	}
 
 	BITMAPINFO bi={0};
@@ -946,7 +952,12 @@ UINT GetDpi(HWND hwnd)
 	return dpi;
 }
 
+int ScaleForDpi(UINT dpi, int value)
+{
+	return MulDiv(value, dpi, USER_DEFAULT_SCREEN_DPI);
+}
+
 int ScaleForDpi(HWND hwnd, int value)
 {
-	return MulDiv(value, GetDpi(hwnd), USER_DEFAULT_SCREEN_DPI);
+	return ScaleForDpi(GetDpi(hwnd), value);
 }

Src/Lib/ResourceHelper.h

@@ -35,7 +35,7 @@ HICON ShExtractIcon( const char *path, int index, int iconSize );
 HBITMAP BitmapFromIcon( HICON hIcon, int iconSize, unsigned int **pBits, bool bDestroyIcon );
 
 // Loads an image file into a bitmap and optionally resizes it
-HBITMAP LoadImageFile( const wchar_t *path, const SIZE *pSize, bool bUseAlpha, bool bPremultiply, std::vector<unsigned int> *pButtonAnim );
+HBITMAP LoadImageFile( const wchar_t *path, const SIZE *pSize, bool bUseAlpha, bool bPremultiply, std::vector<unsigned int> *pButtonAnim, UINT dpi=0 );
 
 // Loads a bitmap from a IMAGE resource
 HBITMAP LoadImageResource( HMODULE hModule, const wchar_t *name, bool bTopDown, bool bPremultiply );
@@ -88,6 +88,8 @@ HFONT CreateFontSetting( const wchar_t *fontStr, int dpi );
 // Return DPI of given window (or system DPI on older systems)
 UINT GetDpi(HWND hwnd = nullptr);
 
+// Scale given value according to given DPI
+int ScaleForDpi(UINT dpi, int value);
 // Scale given value according to DPI of window
 int ScaleForDpi(HWND hwnd, int value);
 

Src/StartMenu/StartMenuDLL/StartButton.cpp

@@ -526,16 +526,16 @@ void CStartButton::LoadBitmap( void )
 	}
 	else
 	{
+		int dpi=GetDpi(GetParent());
 		bool bResource=false;
 		std::vector<unsigned int> buttonAnim;
 		if (*path)
 		{
-			m_Bitmap=LoadImageFile(path,&size,true,true,&buttonAnim);
+			m_Bitmap=LoadImageFile(path,&size,true,true,&buttonAnim,dpi);
 		}
 		if (!m_Bitmap)
 		{
 			int id;
-			int dpi=GetDpi(GetParent());
 			if (dpi<120)
 				id=IDB_BUTTON96;
 			else if (dpi<144)

Src/StartMenu/StartMenuDLL/StartMenuDLL.cpp

@@ -1624,7 +1624,7 @@ static void ComputeTaskbarColors( int *data )
 {
 	bool bDefLook;
 	int look=GetSettingInt(L"TaskbarLook",bDefLook);
-	if (GetWinVersion()<WIN_VER_WIN10 || look==TASKBAR_AEROGLASS || (look==TASKBAR_TRANSPARENT && g_TaskbarTexture))
+	if (GetWinVersion()<WIN_VER_WIN10 || !IsAppThemed() || look==TASKBAR_AEROGLASS || (look==TASKBAR_TRANSPARENT && g_TaskbarTexture))
 	{
 		memset(data,0,16);
 	}
@@ -1872,6 +1872,7 @@ static LRESULT CALLBACK SubclassTaskBarProc( HWND hWnd, UINT uMsg, WPARAM wParam
 		ComputeTaskbarColors(data);
 		WINCOMPATTRDATA attrData={0x13,&data,sizeof(data)};
 		SetWindowCompositionAttribute(hWnd,&attrData);
+		UpdateTaskBars(TASKBAR_UPDATE_TEXTURE);
 		return res;
 	}
 	if ((uMsg==WM_DWMCOLORIZATIONCOLORCHANGED || uMsg==WM_SETTINGCHANGE) && taskBar && taskBar->bCustomLook && SetWindowCompositionAttribute && GetWinVersion()<WIN_VER_WIN10)
@@ -1932,7 +1933,7 @@ static LRESULT CALLBACK SubclassTaskBarProc( HWND hWnd, UINT uMsg, WPARAM wParam
 				WINCOMPATTRDATA attrData={0x13,&data,sizeof(data)};
 				SetWindowCompositionAttribute(hWnd,&attrData);
 			}
-			if (g_TaskbarTexture && IsAppThemed())
+			if (g_TaskbarTexture)
 			{
 				// draw taskbar background (behind start button and separators)
 				PAINTSTRUCT ps;
@@ -2383,12 +2384,19 @@ void UpdateTaskBars( TUpdateTaskbar update )
 					}
 				}
 			}
-			else if (GetWinVersion()<WIN_VER_WIN10 && (!bDefColor || !bDefOpacity))
+			else if ((GetWinVersion()<WIN_VER_WIN10 && (!bDefColor || !bDefOpacity)) || !IsAppThemed())
 			{
 				if (bDefColor && GetWinVersion()>WIN_VER_WIN7)
 				{
-					color=GetSystemGlassColor8();
+					if (IsAppThemed()) 
-					color=((color&0xFF)<<16)|(color&0xFF00)|((color>>16)&0xFF);
+					{
+						color=GetSystemGlassColor8();
+						color=((color&0xFF)<<16)|(color&0xFF00)|((color>>16)&0xFF);
+					}
+					else
+					{
+						color=GetSysColor(COLOR_BTNFACE);
+					}
 				}
 				BITMAPINFO bi={0};
 				bi.bmiHeader.biSize=sizeof(BITMAPINFOHEADER);
@@ -3012,7 +3020,10 @@ static void InitStartMenuDLL( void )
 		if (GetWinVersion()<=WIN_VER_WIN81)
 			g_DrawThemeBackgroundHook=SetIatHook(module,"uxtheme.dll","DrawThemeBackground",DrawThemeBackground2);
 		g_DrawThemeTextHook=SetIatHook(module,"uxtheme.dll","DrawThemeText",DrawThemeText2);
-		g_DrawThemeTextExHook=SetIatHook(module,"uxtheme.dll","DrawThemeTextEx",DrawThemeTextEx2);
+		if (IsAppThemed())
+		{
+			g_DrawThemeTextExHook=SetIatHook(module,"uxtheme.dll","DrawThemeTextEx",DrawThemeTextEx2);
+		}
 		g_DrawThemeTextCtlHook=SetIatHook(GetModuleHandle(L"comctl32.dll"),"uxtheme.dll","DrawThemeText",DrawThemeText2);
 		if (GetWinVersion()>=WIN_VER_WIN10)
 			g_SetWindowCompositionAttributeHook=SetIatHook(module,"user32.dll","SetWindowCompositionAttribute",SetWindowCompositionAttribute2);

appveyor.yml

@@ -21,5 +21,5 @@ deploy:
   on:
     APPVEYOR_ACCOUNT_NAME: passionate-coder
   auth_token:
-    secure: SOu6Y71k0oIxXJR35x+7ZTrqDa3HqUM4kLNJc+DbohPz9zhVHh9O8QYwmI7LI0qslug5L11fo9pZVfVgZttw4eBgooHaX9TNBTTA6sJItkXqMX+M6mKAG7tbI/O3Eg0v
+    secure: SOu6Y71k0oIxXJR35x+7ZeU/+WRW8kaGnCWcbR3OVOd8HeCJwB1Tw3hUJa5EveLGKaGoMKGqAh01Pwc8tWX4xmphZsYYUr09IVjA0+rqgN5VT87CXD6OQxUxBJ7g+9IN
   prerelease: true