/**
* _cairo_beos_bitmap_to_surface:
*
* Returns an addrefed image surface for a BBitmap. The bitmap need not outlive
* the surface.
**/
static cairo_image_surface_t*
_cairo_beos_bitmap_to_surface (BBitmap* bitmap)
{
color_space format = bitmap->ColorSpace();
if (format != B_RGB32 && format != B_RGBA32) {
BBitmap bmp(bitmap->Bounds(), B_RGB32, true);
BView view(bitmap->Bounds(), "Cairo bitmap drawing view",
B_FOLLOW_ALL_SIDES, 0);
bmp.AddChild(&view);
view.LockLooper();
view.DrawBitmap(bitmap, BPoint(0.0, 0.0));
view.Sync();
cairo_image_surface_t* imgsurf = _cairo_beos_bitmap_to_surface(&bmp);
view.UnlockLooper();
bmp.RemoveChild(&view);
return imgsurf;
}
cairo_format_t cformat = format == B_RGB32 ? CAIRO_FORMAT_RGB24
: CAIRO_FORMAT_ARGB32;
BRect bounds(bitmap->Bounds());
unsigned char* bits = reinterpret_cast<unsigned char*>(bitmap->Bits());
int width = bounds.IntegerWidth() + 1;
int height = bounds.IntegerHeight() + 1;
unsigned char* premultiplied;
if (cformat == CAIRO_FORMAT_ARGB32) {
premultiplied = premultiply_rgba(bits, width, height,
bitmap->BytesPerRow());
} else {
premultiplied = reinterpret_cast<unsigned char*>(
_cairo_malloc_ab(bitmap->BytesPerRow(), height));
if (premultiplied)
memcpy(premultiplied, bits, bitmap->BytesPerRow() * height);
}
if (!premultiplied)
return NULL;
cairo_image_surface_t* surf = reinterpret_cast<cairo_image_surface_t*>
(cairo_image_surface_create_for_data(premultiplied,
cformat,
width,
height,
bitmap->BytesPerRow()));
if (surf->base.status)
free(premultiplied);
else
_cairo_image_surface_assume_ownership_of_data(surf);
return surf;
}
void
BitmapImage::PixmapComplete ()
{
MoonPixbuf *pixbuf;
SetProgress (1.0);
if (!loader) {
if (!moon_error)
moon_error = new MoonError (MoonError::EXCEPTION, 4001, "no loader");
goto failed;
}
loader->Close (moon_error == NULL ? &moon_error : NULL);
if (moon_error)
goto failed;
if (!(pixbuf = loader->GetPixbuf ())) {
moon_error = new MoonError (MoonError::EXCEPTION, 4001, "failed to create image data");
goto failed;
}
SetPixelWidth (pixbuf->GetWidth ());
SetPixelHeight (pixbuf->GetHeight ());
// PixelFormat has been dropped and only Pbgra32 is supported
// http://blogs.msdn.com/silverlight_sdk/archive/2009/07/01/breaking-changes-document-errata-silverlight-3.aspx
// not clear if '3' channel is still supported (converted to 4) in SL3
if (pixbuf->GetNumChannels () == 4) {
SetBitmapData (premultiply_rgba (pixbuf), true);
} else {
SetBitmapData (expand_rgb_to_argb (pixbuf), true);
}
Invalidate ();
delete loader;
loader = NULL;
if (HasHandlers (ImageOpenedEvent))
Emit (ImageOpenedEvent, new RoutedEventArgs ());
return;
failed:
ImageErrorEventArgs *args = NULL;
if (HasHandlers (ImageFailedEvent))
args = new ImageErrorEventArgs (*moon_error);
CleanupLoader ();
if (args)
Emit (ImageFailedEvent, args);
}
