void BitmapImage::draw(GraphicsContext* ctxt, const FloatRect& dstRect, const FloatRect& srcRectIn, ColorSpace styleColorSpace, CompositeOperator compositeOp, BlendMode blendMode, ImageOrientationDescription)
{
if (!m_source.initialized())
return;
if (mayFillWithSolidColor())
fillWithSolidColor(ctxt, dstRect, solidColor(), styleColorSpace, compositeOp);
else {
IntRect intSrcRect(srcRectIn);
RefPtr<SharedBitmap> bmp = frameAtIndex(m_currentFrame);
if (bmp) {
if (bmp->width() != m_source.size().width()) {
double scaleFactor = static_cast<double>(bmp->width()) / m_source.size().width();
intSrcRect.setX(stableRound(srcRectIn.x() * scaleFactor));
intSrcRect.setWidth(stableRound(srcRectIn.width() * scaleFactor));
intSrcRect.setY(stableRound(srcRectIn.y() * scaleFactor));
intSrcRect.setHeight(stableRound(srcRectIn.height() * scaleFactor));
}
bmp->draw(ctxt, enclosingIntRect(dstRect), intSrcRect, styleColorSpace, compositeOp, blendMode);
}
}
startAnimation();
}
void SharedBitmap::drawPattern(HDC hdc, const AffineTransform& transform, const FloatRect& tileRectIn, const AffineTransform& patternTransform,
const FloatPoint& phase, ColorSpace styleColorSpace, CompositeOperator op, const FloatRect& destRect, const IntSize& origSourceSize)
{
if (!m_pixels)
return;
if (tileRectIn.width() <= 0 || tileRectIn.height() <= 0)
return;
bool useAlpha = op == CompositeSourceOver && hasAlpha() && is32bit();
int bmpWidth = width();
int bmpHeight = height();
FloatRect tileRect(tileRectIn);
if (bmpWidth != origSourceSize.width()) {
double rate = static_cast<double>(bmpWidth) / origSourceSize.width();
double temp = tileRect.width() * rate;
tileRect.setX(tileRect.x() * rate);
tileRect.setWidth(temp);
temp = tileRect.height() * rate;
tileRect.setY(tileRect.y() * rate);
tileRect.setHeight(temp);
}
OwnPtr<HBITMAP> clippedBmp;
if (tileRect.x() || tileRect.y() || tileRect.width() != bmpWidth || tileRect.height() != bmpHeight) {
BitmapInfo patternBmpInfo;
void* patternPixels;
clippedBmp = clipBitmap(IntRect(tileRect), useAlpha, patternBmpInfo, patternPixels);
if (!clippedBmp)
return;
bmpWidth = tileRect.width();
bmpHeight = tileRect.height();
}
AffineTransform tf = patternTransform * transform;
FloatRect trRect = tf.mapRect(destRect);
RECT clipBox;
int clipType = GetClipBox(hdc, &clipBox);
if (clipType == SIMPLEREGION)
trRect.intersect(FloatRect(clipBox.left, clipBox.top, clipBox.right - clipBox.left, clipBox.bottom - clipBox.top));
else if (clipType == COMPLEXREGION) {
OwnPtr<HRGN> clipRgn = adoptPtr(CreateRectRgn(0, 0, 0, 0));
if (GetClipRgn(hdc, clipRgn.get()) > 0) {
DWORD regionDataSize = GetRegionData(clipRgn.get(), sizeof(RGNDATA), 0);
if (regionDataSize) {
Vector<RGNDATA> regionData(regionDataSize);
GetRegionData(clipRgn.get(), regionDataSize, regionData.data());
RECT* rect = reinterpret_cast<RECT*>(regionData[0].Buffer);
for (DWORD i = 0; i < regionData[0].rdh.nCount; ++i, ++rect)
trRect.intersect(FloatRect(rect->left, rect->top, rect->right - rect->left, rect->bottom - rect->top));
}
}
}
if (trRect.width() <= 0 || trRect.height() <= 0)
return;
trRect.inflate(1);
IntRect visibleDstRect = enclosingIntRect(tf.inverse().mapRect(trRect));
visibleDstRect.intersect(IntRect(destRect));
if (visibleDstRect.width() <= 0 || visibleDstRect.height() <= 0)
return;
trRect = tf.mapRect(visibleDstRect);
RECT dstRectWin = {
stableRound(trRect.x()),
stableRound(trRect.y()),
stableRound(trRect.maxX()),
stableRound(trRect.maxY()),
};
if (dstRectWin.right <= dstRectWin.left || dstRectWin.bottom <= dstRectWin.top)
return;
SIZE bmpSize = { bmpWidth, bmpHeight };
// Relative to destination, in bitmap pixels
POINT phaseWin = { stableRound(visibleDstRect.x() - phase.x()), stableRound(visibleDstRect.y() - phase.y()) };
phaseWin.x = normalizePhase(phaseWin.x, bmpSize.cx);
phaseWin.y = normalizePhase(phaseWin.y, bmpSize.cy);
RECT srcRectWin = {
0,
0,
stableRound(visibleDstRect.maxX()) - stableRound(visibleDstRect.x()),
stableRound(visibleDstRect.maxY()) - stableRound(visibleDstRect.y())
};
if (srcRectWin.right <= 0 || srcRectWin.bottom <= 0)
return;
BitmapInfo bmpInfo = BitmapInfo::createBottomUp(IntSize(srcRectWin.right, srcRectWin.bottom), useAlpha ? BitmapInfo::BitCount32 : BitmapInfo::BitCount16);
void* pixels;
OwnPtr<HBITMAP> hbmpTemp = adoptPtr(CreateDIBSection(0, &bmpInfo, DIB_RGB_COLORS, &pixels, 0, 0));
if (!hbmpTemp)
return;
OwnPtr<HDC> hmemdc = adoptPtr(CreateCompatibleDC(hdc));
HGDIOBJ oldBmp = SelectObject(hmemdc.get(), hbmpTemp.get());
if (clippedBmp)
drawPatternSimple(hmemdc.get(), srcRectWin, clippedBmp.get(), phaseWin);
else if ((op != CompositeSourceOver || canUseDIBits()) && srcRectWin.right <= bmpSize.cx * 2 && srcRectWin.bottom <= bmpSize.cy * 2)
drawPatternSimple(hmemdc.get(), srcRectWin, this, bmpSize, phaseWin);
else if (ensureHandle())
drawPatternSimple(hmemdc.get(), srcRectWin, getHandle(), phaseWin);
else {
void* pixels;
BitmapInfo bmpInfo;
OwnPtr<HBITMAP> hbmp = createHandle(&pixels, &bmpInfo, -1, false);
if (hbmp)
drawPatternSimple(hmemdc.get(), srcRectWin, hbmp.get(), phaseWin);
else {
SelectObject(hmemdc.get(), oldBmp);
return;
}
}
if (useAlpha && hasAlphaBlendSupport()) {
static const BLENDFUNCTION blend = { AC_SRC_OVER, 0, 255, AC_SRC_ALPHA };
bool success = alphaBlendIfSupported(hdc, dstRectWin.left, dstRectWin.top, dstRectWin.right - dstRectWin.left, dstRectWin.bottom - dstRectWin.top,
hmemdc.get(), 0, 0, srcRectWin.right, srcRectWin.bottom, blend);
ASSERT_UNUSED(success, success);
} else if (useAlpha && !hasAlphaBlendSupport() || op == CompositeSourceOver && usesTransparentColor()) {
TransparentBlt(hdc, dstRectWin.left, dstRectWin.top, dstRectWin.right - dstRectWin.left,
dstRectWin.bottom - dstRectWin.top, hmemdc.get(), 0, 0, srcRectWin.right, srcRectWin.bottom, transparentColor());
} else {
DWORD bmpOp = op == CompositeCopy ? SRCCOPY
: op == CompositeSourceOver ? SRCCOPY
: op == CompositeXOR ? PATINVERT
: op == CompositeClear ? WHITENESS
: SRCCOPY; // FIXEME: other types?
StretchDIBits(hdc, dstRectWin.left, dstRectWin.top, dstRectWin.right - dstRectWin.left,
dstRectWin.bottom - dstRectWin.top, 0, 0, srcRectWin.right, srcRectWin.bottom,
pixels, &bmpInfo, DIB_RGB_COLORS, bmpOp);
}
SelectObject(hmemdc.get(), oldBmp);
}
