diff options
| -rw-r--r-- | plugins/SendScreenshotPlus/src/Utils.cpp | 86 |
1 files changed, 42 insertions, 44 deletions
diff --git a/plugins/SendScreenshotPlus/src/Utils.cpp b/plugins/SendScreenshotPlus/src/Utils.cpp index 19071611a8..fdfb29f24e 100644 --- a/plugins/SendScreenshotPlus/src/Utils.cpp +++ b/plugins/SendScreenshotPlus/src/Utils.cpp @@ -162,56 +162,54 @@ FIBITMAP* CaptureScreen (HDC hDC,SIZE size,HWND hCapture){ } dib = FIP->FI_CreateDIBFromHBITMAP(hBitmap); - if(hCapture){ - //alpha channel from window is always wrong, - //coz GDI do not draw all in alpha mode. - //we have to create our own new alpha channel. - bool bFixAlpha=true; - bool bInvert=false; - HBRUSH hBr=CreateSolidBrush(RGB(255,255,255));//Create a SolidBrush object for non transparent area - HBITMAP hMask=CreateBitmap(size.cx,size.cy,1,1,NULL);// Create monochrome (1 bit) B+W mask bitmap. - HDC hMaskDC=CreateCompatibleDC(0); - SelectBitmap(hMaskDC,hMask); - HRGN hRgn=CreateRectRgn(0,0,0,0); - if(GetWindowRgn(hCapture,hRgn)==ERROR){ - if((GetWindowLongPtr(hCapture,GWL_EXSTYLE)&WS_EX_LAYERED)){ - BYTE bAlpha=0; - COLORREF crKey=0;//0x00bbggrr - DWORD dwFlags=0; - if(GetLayeredWindowAttributes(hCapture,&crKey,&bAlpha,&dwFlags)) { - //per window transparency (like fading in a whole window). - if((dwFlags&LWA_COLORKEY)){ - SetBkColor(hMemDC,crKey); - BitBlt(hMaskDC,0,0,size.cx,size.cy,hMemDC,0,0,SRCCOPY); - bInvert=true; - }else if((dwFlags&LWA_ALPHA)){ - bFixAlpha=false; - } - }else{//per-pixel transparency (won't use the WM_PAINT) + //alpha channel from window is always wrong and sometimes even for desktop (Win7, no aero) + //coz GDI do not draw all in alpha mode. + //we have to create our own new alpha channel. + bool bFixAlpha=true; + bool bInvert=false; + HBRUSH hBr=CreateSolidBrush(RGB(255,255,255));//Create a SolidBrush object for non transparent area + HBITMAP hMask=CreateBitmap(size.cx,size.cy,1,1,NULL);// Create monochrome (1 bit) B+W mask bitmap. + HDC hMaskDC=CreateCompatibleDC(0); + SelectBitmap(hMaskDC,hMask); + HRGN hRgn=CreateRectRgn(0,0,0,0); + if(hCapture && GetWindowRgn(hCapture,hRgn)==ERROR){ + if((GetWindowLongPtr(hCapture,GWL_EXSTYLE)&WS_EX_LAYERED)){ + BYTE bAlpha=0; + COLORREF crKey=0;//0x00bbggrr + DWORD dwFlags=0; + if(GetLayeredWindowAttributes(hCapture,&crKey,&bAlpha,&dwFlags)) { + //per window transparency (like fading in a whole window). + if((dwFlags&LWA_COLORKEY)){ + SetBkColor(hMemDC,crKey); + BitBlt(hMaskDC,0,0,size.cx,size.cy,hMemDC,0,0,SRCCOPY); + bInvert=true; + }else if((dwFlags&LWA_ALPHA)){ bFixAlpha=false; } - }else{//not layered - fill the window region - SetRectRgn(hRgn,0,0,size.cx,size.cy); - FillRgn(hMaskDC,hRgn,hBr); + }else{//per-pixel transparency (won't use the WM_PAINT) + bFixAlpha=false; } - }else{ -// if(!hDC) SetRectRgn(hRgn,0,0,size.cx,size.cy);//client area only, no transparency + }else{//not layered - fill the window region + SetRectRgn(hRgn,0,0,size.cx,size.cy); FillRgn(hMaskDC,hRgn,hBr); } - DeleteObject(hRgn); - if(bFixAlpha){ - FIBITMAP* dibMask = FIP->FI_CreateDIBFromHBITMAP(hMask); - if(bInvert) FIP->FI_Invert(dibMask); - FIBITMAP* dib8 = FIP->FI_ConvertTo8Bits(dibMask); - //copy the dib8 alpha mask to dib32 main bitmap - FIP->FI_SetChannel(dib,dib8,FICC_ALPHA); - FIP->FI_Unload(dibMask); - FIP->FI_Unload(dib8); - } - DeleteDC(hMaskDC); - DeleteObject(hMask); - DeleteObject(hBr); + }else{ + if(!hCapture) SetRectRgn(hRgn,0,0,size.cx,size.cy);//client area only, no transparency + FillRgn(hMaskDC,hRgn,hBr); + } + DeleteObject(hRgn); + if(bFixAlpha){ + FIBITMAP* dibMask = FIP->FI_CreateDIBFromHBITMAP(hMask); + if(bInvert) FIP->FI_Invert(dibMask); + FIBITMAP* dib8 = FIP->FI_ConvertTo8Bits(dibMask); + //copy the dib8 alpha mask to dib32 main bitmap + FIP->FI_SetChannel(dib,dib8,FICC_ALPHA); + FIP->FI_Unload(dibMask); + FIP->FI_Unload(dib8); } + DeleteDC(hMaskDC); + DeleteObject(hMask); + DeleteObject(hBr); //clean up DeleteDC(hMemDC); DeleteObject(hBitmap); |