static HBITMAP imageFromRect(const Frame* frame, IntRect& ir)
{
PaintBehavior oldPaintBehavior = frame->view()->paintBehavior();
frame->view()->setPaintBehavior(oldPaintBehavior | PaintBehaviorFlattenCompositingLayers);
void* bits;
HDC hdc = CreateCompatibleDC(0);
int w = ir.width();
int h = ir.height();
BitmapInfo bmp = BitmapInfo::create(IntSize(w, h));
HBITMAP hbmp = CreateDIBSection(0, &bmp, DIB_RGB_COLORS, static_cast<void**>(&bits), 0, 0);
HBITMAP hbmpOld = static_cast<HBITMAP>(SelectObject(hdc, hbmp));
CGContextRef context = CGBitmapContextCreate(static_cast<void*>(bits), w, h,
8, w * sizeof(RGBQUAD), deviceRGBColorSpaceRef(), kCGBitmapByteOrder32Little | kCGImageAlphaPremultipliedFirst);
CGContextSaveGState(context);
GraphicsContext gc(context);
drawRectIntoContext(ir, frame->view(), &gc);
CGContextRelease(context);
SelectObject(hdc, hbmpOld);
DeleteDC(hdc);
frame->view()->setPaintBehavior(oldPaintBehavior);
return hbmp;
}
HBITMAP imageFromSelection(Frame* frame, bool forceBlackText)
{
frame->view()->setPaintRestriction(forceBlackText ? PaintRestrictionSelectionOnlyBlackText : PaintRestrictionSelectionOnly);
FloatRect fr = frame->selectionRect();
IntRect ir(static_cast<int>(fr.x()), static_cast<int>(fr.y()),
static_cast<int>(fr.width()), static_cast<int>(fr.height()));
void* bits;
HDC hdc = CreateCompatibleDC(0);
int w = ir.width();
int h = ir.height();
BITMAPINFO bmp = { { sizeof(BITMAPINFOHEADER), w, h, 1, 32 } };
HBITMAP hbmp = CreateDIBSection(0, &bmp, DIB_RGB_COLORS, static_cast<void**>(&bits), 0, 0);
HBITMAP hbmpOld = static_cast<HBITMAP>(SelectObject(hdc, hbmp));
CGColorSpaceRef deviceRGB = CGColorSpaceCreateDeviceRGB();
CGContextRef context = CGBitmapContextCreate(static_cast<void*>(bits), w, h,
8, w * sizeof(RGBQUAD), deviceRGB, kCGBitmapByteOrder32Little | kCGImageAlphaPremultipliedFirst);
CGColorSpaceRelease(deviceRGB);
CGContextSaveGState(context);
GraphicsContext gc(context);
frame->document()->updateLayout();
drawRectIntoContext(ir, frame->view(), &gc);
CGContextRelease(context);
SelectObject(hdc, hbmpOld);
DeleteDC(hdc);
frame->view()->setPaintRestriction(PaintRestrictionNone);
return hbmp;
}
