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Implemented background transparency on animation control for avi 

composed of 8 bpp(or less) image. I added support for 8 bpp or more,
but it has not been tested.
This commit is contained in:
Francois Methot 2000-08-16 12:44:52 +00:00 committed by Alexandre Julliard
parent aa04597a91
commit 587cc122dc
1 changed files with 106 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

114
dlls/comctl32/animate.c
View File

@ -69,6 +69,9 @@ typedef struct
int nToFrame;
int nLoop;
int currFrame;
/* Background frame info*/
HBITMAP bkgFrameb;
LPDWORD bkColor;
} ANIMATE_INFO;
#define ANIMATE_GetInfoPtr(hWnd) ((ANIMATE_INFO *)GetWindowLongA(hWnd, 0))
@ -110,6 +113,8 @@ static BOOL ANIMATE_LoadResA(ANIMATE_INFO *infoPtr, HINSTANCE hInst, LPSTR lpNam
GlobalFree((HGLOBAL)lpAvi);
return FALSE;
}
infoPtr->bkgFrameb=(HBITMAP)NULL;
return TRUE;
}
@ -154,6 +159,11 @@ static void ANIMATE_Free(ANIMATE_INFO *infoPtr)
if (infoPtr->hMMio) {
ANIMATE_DoStop(infoPtr);
infoPtr->fnmmioClose(infoPtr->hMMio, 0);
if (infoPtr->bkgFrameb) {
DeleteObject(infoPtr->bkgFrameb);
infoPtr->bkgFrameb=(HBITMAP)NULL;
infoPtr->bkColor=NULL;
}
if (infoPtr->hRes) {
FreeResource(infoPtr->hRes);
infoPtr->hRes = 0;
@ -190,16 +200,104 @@ static LRESULT ANIMATE_PaintFrame(ANIMATE_INFO* infoPtr, HDC hDC)
{
if (!hDC || !infoPtr->inbih)
return TRUE;
if (infoPtr->hic)
StretchDIBits(hDC, 0, 0, infoPtr->outbih->biWidth, infoPtr->outbih->biHeight,
0, 0, infoPtr->outbih->biWidth, infoPtr->outbih->biHeight,
infoPtr->outdata, (LPBITMAPINFO)infoPtr->outbih, DIB_RGB_COLORS,
if (infoPtr->hic){
if (GetWindowLongA(infoPtr->hWnd, GWL_STYLE) & ACS_TRANSPARENT){
FIXME("TRANSPARENCY NOT SUPPORTED(NOT TESTED) FOR COMPRESSED IMAGE\n");
}
StretchDIBits(hDC, 0, 0, infoPtr->outbih->biWidth, infoPtr->outbih->biHeight,
0, 0, infoPtr->outbih->biWidth, infoPtr->outbih->biHeight,
infoPtr->outdata, (LPBITMAPINFO)infoPtr->outbih, DIB_RGB_COLORS,
SRCCOPY);
}
else{
if (GetWindowLongA(infoPtr->hWnd, GWL_STYLE) & ACS_TRANSPARENT){
HBITMAP hbmMem, hbmMem2,hbmMem3;
HDC hdcSrc, hdcMask, hdcMem;
hdcSrc = CreateCompatibleDC(hDC);
hdcMask = CreateCompatibleDC(hDC);
hdcMem = CreateCompatibleDC(hDC);
/* create a Black and white bitmap */
hbmMem = CreateCompatibleBitmap( hDC,infoPtr->inbih->biWidth,infoPtr->inbih->biHeight);
hbmMem2 = CreateBitmap(infoPtr->inbih->biWidth, infoPtr->inbih->biHeight, 1, 1, NULL);
hbmMem3 = CreateCompatibleBitmap( hDC,infoPtr->inbih->biWidth,infoPtr->inbih->biHeight);
SelectObject( hdcSrc, hbmMem);
StretchDIBits(hdcSrc, 0, 0, infoPtr->inbih->biWidth, infoPtr->inbih->biHeight,
0, 0, infoPtr->inbih->biWidth, infoPtr->inbih->biHeight,
infoPtr->indata, (LPBITMAPINFO)infoPtr->inbih, DIB_RGB_COLORS,
SRCCOPY);
else
StretchDIBits(hDC, 0, 0, infoPtr->inbih->biWidth, infoPtr->inbih->biHeight,
0, 0, infoPtr->inbih->biWidth, infoPtr->inbih->biHeight,
infoPtr->indata, (LPBITMAPINFO)infoPtr->inbih, DIB_RGB_COLORS,
if (infoPtr->bkgFrameb==(HBITMAP)NULL)
{
infoPtr->bkgFrameb = CreateCompatibleBitmap( hDC,infoPtr->inbih->biWidth,infoPtr->inbih->biHeight);
SelectObject( hdcMem, infoPtr->bkgFrameb);
BitBlt(hdcMem, 0, 0, infoPtr->inbih->biWidth, infoPtr->inbih->biHeight, hDC, 0, 0, SRCCOPY);
/* Get the transparent color from the first frame*/
if (infoPtr->inbih->biBitCount<=8)
infoPtr->bkColor = (LPVOID)((LPSTR)infoPtr->inbih + (WORD)(((LPBITMAPINFO)infoPtr->inbih)->bmiHeader.biSize));
else
infoPtr->bkColor = (LPVOID)GetPixel(hdcSrc, 0, 0);
}
/* Need the copy of the original destination HDC*/
SelectObject( hdcSrc, infoPtr->bkgFrameb);
SelectObject( hdcMem, hbmMem3);
BitBlt(hdcMem, 0, 0, infoPtr->inbih->biWidth, infoPtr->inbih->biHeight, hdcSrc, 0, 0, SRCCOPY);
SelectObject( hdcSrc, hbmMem);
SelectObject( hdcMask, hbmMem2);
/*Windows converts a color source into monochrome when the destination is
monochrome. In this situation, all pixels in the color bitmap that are the same color
as the background color become 1s, and all the other pixels are converted to 0s. */
if (infoPtr->inbih->biBitCount<=8)
SetBkColor(hdcSrc, infoPtr->bkColor[(((BYTE*)infoPtr->indata)[0])]);
else{ /* has not been tested with more then 8 bpp */
FIXME("Has not been test with more than 8bpp, errors are possible\n");
SetBkColor(hdcSrc, (COLORREF)infoPtr->bkColor);
}
BitBlt(hdcMask, 0, 0, infoPtr->inbih->biWidth, infoPtr->inbih->biHeight, hdcSrc, 0, 0, SRCCOPY);
/*During a blt operation with a color destination, a monochrome source bitmap
(and/or a brush when applicable) is converted to color on the fly before the
actual ROP is carried out on the bits. The 0 (black) pixels in the monochrome
bitmap are converted to the destination's text (foreground) color, and the 1
(white) pixels are converted to the background color. */
SetBkColor(hdcSrc, RGB(0,0,0)); // 1s --> black (0x000000)
SetTextColor(hdcSrc, RGB(255,255,255)); // 0s --> white (0xFFFFFF)
BitBlt(hdcSrc, 0, 0, infoPtr->inbih->biWidth, infoPtr->inbih->biHeight, hdcMask, 0, 0, SRCAND);
SetBkColor(hdcMem, RGB(255,255,255)); // 0s --> white (0xFFFFFF)
SetTextColor(hdcMem, RGB(0,0,0)); // 1s --> black (0x000000)
BitBlt(hdcMem, 0, 0, infoPtr->inbih->biWidth, infoPtr->inbih->biHeight, hdcMask, 0, 0, SRCAND);
BitBlt(hdcMem, 0, 0, infoPtr->inbih->biWidth, infoPtr->inbih->biHeight, hdcSrc, 0, 0, SRCPAINT);
BitBlt(hDC, 0, 0, infoPtr->inbih->biWidth, infoPtr->inbih->biHeight, hdcMem, 0, 0, SRCCOPY);
DeleteDC(hdcMem);
DeleteDC(hdcSrc);
DeleteDC(hdcMask);
DeleteObject(hbmMem);
DeleteObject(hbmMem2);
DeleteObject(hbmMem3);
}
else{
StretchDIBits(hDC, 0, 0, infoPtr->inbih->biWidth, infoPtr->inbih->biHeight,
0, 0, infoPtr->inbih->biWidth, infoPtr->inbih->biHeight,
infoPtr->indata, (LPBITMAPINFO)infoPtr->inbih, DIB_RGB_COLORS,
SRCCOPY);
}
}
return TRUE;
}