C++ (Cpp) cairo_quartz_surface_get_image示例

示例#1

文件： gfxQuartzSurface.cpp 项目： Anachid/mozilla-central

already_AddRefed<gfxImageSurface> gfxQuartzSurface::GetAsImageSurface()
{
    cairo_surface_t *surface = cairo_quartz_surface_get_image(mSurface);
    if (!surface)
        return nsnull;

    nsRefPtr<gfxASurface> img = Wrap(surface);

    // cairo_quartz_surface_get_image returns a referenced image, and thebes
    // shares the refcounts of Cairo surfaces. However, Wrap also adds a
    // reference to the image. We need to remove one of these references
    // explicitly so we don't leak.
    gfxImageSurface* imgSurface = static_cast<gfxImageSurface*> (img.forget().get());
    imgSurface->Release();

    return imgSurface;
}

示例#2

文件： gfxQuartzSurface.cpp 项目： ConradIrwin/gecko-dev

already_AddRefed<gfxImageSurface> gfxQuartzSurface::GetAsImageSurface()
{
    cairo_surface_t *surface = cairo_quartz_surface_get_image(mSurface);
    if (!surface || cairo_surface_status(surface))
        return nullptr;

    nsRefPtr<gfxASurface> img = Wrap(surface);

    // cairo_quartz_surface_get_image returns a referenced image, and thebes
    // shares the refcounts of Cairo surfaces. However, Wrap also adds a
    // reference to the image. We need to remove one of these references
    // explicitly so we don't leak.
    img->Release();

    img->SetOpaqueRect(GetOpaqueRect());

    return img.forget().downcast<gfxImageSurface>();
}