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Fix ImageList_Read - the root cause of ugly toolbar icons.

This commit is contained in:
Vitaliy Margolen 2003-04-02 23:18:17 +00:00 committed by Alexandre Julliard
parent 462172a3d6
commit 1420acef09
1 changed files with 21 additions and 25 deletions
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40
dlls/comctl32/imagelist.c
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@ -1894,15 +1894,14 @@ static int may_use_dibsection(HDC hdc) {
/* helper for ImageList_Read, see comments below */
static HBITMAP _read_bitmap(LPSTREAM pstm,int ilcFlag,int cx,int cy) {
HDC xdc = 0;
HDC xdc = 0, hBitmapDC =0;
BITMAPFILEHEADER bmfh;
BITMAPINFOHEADER bmih;
int bitsperpixel,palspace,longsperline,width,height;
LPBITMAPINFOHEADER bmihc = NULL;
int result = 0;
HBITMAP hbitmap = 0;
LPBYTE bits = NULL,nbits = NULL;
int nbytesperline,bytesperline;
HBITMAP hbitmap = 0, hDIB = 0;
LPBYTE bits = NULL;
if (!SUCCEEDED(IStream_Read ( pstm, &bmfh, sizeof(bmfh), NULL)) ||
(bmfh.bfType != (('M'<<8)|'B')) ||
@ -1942,44 +1941,41 @@ static HBITMAP _read_bitmap(LPSTREAM pstm,int ilcFlag,int cx,int cy) {
} else
#endif
{
int i,nwidth,nheight;
int i,nwidth,nheight,nRows;
nwidth = width*(height/cy);
nheight = cy;
nRows = (height/cy);
if (bitsperpixel==1)
hbitmap = CreateBitmap(nwidth,nheight,1,1,NULL);
else
hbitmap = CreateCompatibleBitmap(xdc,nwidth,nheight);
/* Might be a bit excessive memory use here */
bits = (LPBYTE)LocalAlloc(LMEM_ZEROINIT,bmihc->biSizeImage);
nbits = (LPBYTE)LocalAlloc(LMEM_ZEROINIT,bmihc->biSizeImage);
hDIB = CreateDIBSection(xdc,(BITMAPINFO*)bmihc,0,(LPVOID*)&bits,0,0);
if (!hDIB)
goto ret1;
if (!SUCCEEDED(IStream_Read( pstm, bits, bmihc->biSizeImage, NULL)))
goto ret1;
hBitmapDC = CreateCompatibleDC(0);
SelectObject(hBitmapDC, hbitmap);
/* Copy the NxM bitmap into a 1x(N*M) bitmap we need, linewise */
/* Do not forget that windows bitmaps are bottom->top */
bytesperline = longsperline*4;
nbytesperline = (height/cy)*bytesperline;
for (i=0;i<height;i++) {
memcpy(
nbits+((height-1-i)%cy)*nbytesperline+(i/cy)*bytesperline,
bits+bytesperline*(height-1-i),
bytesperline
);
TRACE("nRows=%d\n", nRows);
for (i=0; i < nRows; i++){
StretchDIBits(hBitmapDC, width*i, 0, width, cy, 0, cy*(nRows-1-i), width, cy, bits,
(BITMAPINFO*)bmihc, DIB_RGB_COLORS, SRCCOPY);
}
bmihc->biWidth = nwidth;
bmihc->biHeight = nheight;
if (!SetDIBits(xdc,hbitmap,0,nheight,nbits,(BITMAPINFO*)bmihc,0))
goto ret1;
LocalFree((HLOCAL)nbits);
LocalFree((HLOCAL)bits);
result = 1;
}
ret1:
if (xdc) ReleaseDC(0,xdc);
if (bmihc) LocalFree((HLOCAL)bmihc);
if (hDIB) DeleteObject(hDIB);
if (hBitmapDC) DeleteDC(hBitmapDC);
if (!result) {
if (hbitmap) {
DeleteObject(hbitmap);