int DisplayTree::Render(
const Matrix& transform,
const ColorMatrix* color_matrix,
int clip_width,
int clip_height,
renderer_base& ren_base,
renderer_scanline& ren) const {
if (!visible) return 0;
Matrix m(transform);
if (placement) {
m.premultiply(placement->matrix);
}
m.premultiply(matrix);
const ColorMatrix* color_m = color_matrix;
if (const ColorMatrix* cm = GetColorMatrix()) {
// We don't currently support multiplying color matrices.
assert(color_m == NULL);
color_m = cm;
}
if (shape) {
RenderShape(*shape, m, color_m, clip_width, clip_height, ren_base, ren);
}
for (std::vector<DisplayTree*>::const_iterator it =
children.begin(); it != children.end(); ++it) {
(*it)->Render(m, color_m, clip_width, clip_height, ren_base, ren);
}
return 0;
}
// *************************************************************
// GetImageAttributes()
// *************************************************************
Gdiplus::ImageAttributes* ImageHelper::GetImageAttributes(IImage* img)
{
if (!img) return NULL;
Gdiplus::ImageAttributes* attr = new Gdiplus::ImageAttributes();
attr->SetWrapMode(Gdiplus::WrapModeTileFlipXY);
VARIANT_BOOL useTransparency;
img->get_UseTransparencyColor(&useTransparency);
OLE_COLOR clr1, clr2;
img->get_TransparencyColor(&clr1);
img->get_TransparencyColor2(&clr2);
SetTransparency(*attr, useTransparency ? true : false, clr1, clr2);
Gdiplus::ColorMatrix m = GetColorMatrix(img);
attr->SetColorMatrix(&m);
Gdiplus::REAL gamma;
img->get_Gamma(&gamma);
attr->SetGamma(gamma);
return attr;
}
