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- Fix palette creation. 

- Fix upside down Gif.
- Add support for transparent Gif.
This commit is contained in:
Maxime Bellengé 2004-05-04 02:53:48 +00:00 committed by Alexandre Julliard
parent db50578ddc
commit 90bcfdca87
1 changed files with 74 additions and 3 deletions
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77
dlls/oleaut32/olepicture.c
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@ -118,6 +118,10 @@ typedef struct OLEPictureImpl {
BOOL keepOrigFormat;
HDC hDCCur;
/* Bitmap transparency mask */
HBITMAP hbmMask;
COLORREF rgbTrans;
/* data */
void* data;
int datalen;
@ -212,6 +216,8 @@ static OLEPictureImpl* OLEPictureImpl_Construct(LPPICTDESC pictDesc, BOOL fOwn)
/* dunno about original value */
newObject->keepOrigFormat = TRUE;
newObject->hbmMask = NULL;
if (pictDesc) {
if(pictDesc->cbSizeofstruct != sizeof(PICTDESC)) {
FIXME("struct size = %d\n", pictDesc->cbSizeofstruct);
@ -541,7 +547,25 @@ static HRESULT WINAPI OLEPictureImpl_Render(IPicture *iface, HDC hdc,
hbmpOld = SelectObject(hdcBmp, This->desc.u.bmp.hbitmap);
StretchBlt(hdc, x, y, cx, cy, hdcBmp, xSrc, ySrc, cxSrc, cySrc, SRCCOPY);
if (This->hbmMask) {
HDC hdcMask = CreateCompatibleDC(0);
HBITMAP hOldbm = SelectObject(hdcMask, This->hbmMask);
SetMapMode(hdcMask, MM_ANISOTROPIC);
SetWindowOrgEx(hdcMask, 0, 0, NULL);
SetWindowExtEx(hdcMask, This->himetricWidth, This->himetricHeight, NULL);
SetViewportOrgEx(hdcMask, 0, This->origHeight, NULL);
SetViewportExtEx(hdcMask, This->origWidth, -This->origHeight, NULL);
SetBkColor(hdc, RGB(255, 255, 255));
SetTextColor(hdc, RGB(0, 0, 0));
StretchBlt(hdc, x, y, cx, cy, hdcMask, xSrc, ySrc, cxSrc, cySrc, SRCAND);
StretchBlt(hdc, x, y, cx, cy, hdcBmp, xSrc, ySrc, cxSrc, cySrc, SRCPAINT);
SelectObject(hdcMask, hOldbm);
DeleteDC(hdcMask);
} else
StretchBlt(hdc, x, y, cx, cy, hdcBmp, xSrc, ySrc, cxSrc, cySrc, SRCCOPY);
SelectObject(hdcBmp, hbmpOld);
DeleteDC(hdcBmp);
@ -916,6 +940,8 @@ static HRESULT WINAPI OLEPictureImpl_Load(IPersistStream* iface,IStream*pStm) {
GifImageDesc *gid;
SavedImage *si;
ColorMapObject *cm;
int transparent = -1;
ExtensionBlock *eb;
gd.data = xbuf;
gd.curoff = 0;
@ -945,15 +971,32 @@ static HRESULT WINAPI OLEPictureImpl_Load(IPersistStream* iface,IStream*pStm) {
gid = &(si->ImageDesc);
cm = gid->ColorMap;
if (!cm) cm = gif->SColorMap;
/* look for the transparent color extension */
for (i = 0; i < si->ExtensionBlockCount; ++i) {
eb = si->ExtensionBlocks + i;
if (eb->Function == 0xF9 && eb->ByteCount == 4) {
if ((eb->Bytes[0] & 1) == 1) {
transparent = eb->Bytes[3];
}
}
}
for (i=0;i<(1<<gif->SColorResolution);i++) {
bmi->bmiColors[i].rgbRed = cm->Colors[i].Red;
bmi->bmiColors[i].rgbGreen = cm->Colors[i].Green;
bmi->bmiColors[i].rgbBlue = cm->Colors[i].Blue;
if (i == transparent) {
This->rgbTrans = RGB(bmi->bmiColors[i].rgbRed,
bmi->bmiColors[i].rgbGreen,
bmi->bmiColors[i].rgbBlue);
}
}
/* Map to in picture coordinates */
for (i=0;i<gid->Height;i++)
for (j=0;j<gid->Width;j++)
bytes[(gid->Top+i)*gif->SWidth+gid->Left+j]=si->RasterBits[i*gid->Width+j];
bytes[(gid->Top+(gif->SHeight-i-1))*gif->SWidth+gid->Left+j]=si->RasterBits[i*gid->Width+j];
bmi->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
bmi->bmiHeader.biWidth = gif->SWidth;
bmi->bmiHeader.biHeight = gif->SHeight;
@ -973,8 +1016,36 @@ static HRESULT WINAPI OLEPictureImpl_Load(IPersistStream* iface,IStream*pStm) {
CBM_INIT,
bytes,
bmi,
DIB_PAL_COLORS
DIB_RGB_COLORS
);
if (transparent > -1) {
/* Create the Mask */
HDC hdc = CreateCompatibleDC(0);
HDC hdcMask = CreateCompatibleDC(0);
HBITMAP hOldbitmap;
HBITMAP hOldbitmapmask;
This->hbmMask = CreateBitmap(bmi->bmiHeader.biWidth, bmi->bmiHeader.biHeight, 1, 1, NULL);
hOldbitmap = SelectObject(hdc,This->desc.u.bmp.hbitmap);
hOldbitmapmask = SelectObject(hdcMask, This->hbmMask);
SetBkColor(hdc, This->rgbTrans);
BitBlt(hdcMask, 0, 0, bmi->bmiHeader.biWidth, bmi->bmiHeader.biHeight, hdc, 0, 0, SRCCOPY);
/* We no longer need the original bitmap, so we apply the first
transformation with the mask to speed up the rendering */
SetBkColor(hdc, RGB(0,0,0));
SetTextColor(hdc, RGB(255,255,255));
BitBlt(hdc, 0, 0, bmi->bmiHeader.biWidth, bmi->bmiHeader.biHeight,
hdcMask, 0, 0, SRCAND);
SelectObject(hdc, hOldbitmap);
SelectObject(hdcMask, hOldbitmapmask);
DeleteDC(hdcMask);
DeleteDC(hdc);
}
DeleteDC(hdcref);
This->desc.picType = PICTYPE_BITMAP;
OLEPictureImpl_SetBitmap(This);