예제 #1
0
파일: border.cpp 프로젝트: 499940913/moon
Size
Border::MeasureOverrideWithError (Size availableSize, MoonError *error)
{
	Size desired = Size (0,0);

	Thickness border = *GetPadding () + *GetBorderThickness ();

	// Get the desired size of our child, and include any margins we set
	VisualTreeWalker walker = VisualTreeWalker (this);
	while (UIElement *child = walker.Step ()) {
		child->MeasureWithError (availableSize.GrowBy (-border), error);
		desired = child->GetDesiredSize ();
	}

	desired = desired.GrowBy (border);

	desired = desired.Min (availableSize);

	return desired;
}
예제 #2
0
파일: media.cpp 프로젝트: snorp/moon
void
Image::Render (cairo_t *cr, Region *region, bool path_only)
{
	ImageSource *source = GetSource ();
	cairo_pattern_t *pattern = NULL;
	cairo_matrix_t matrix;
	
	if (!source)
		return;

	source->Lock ();

	cairo_save (cr);
       
	Size specified (GetActualWidth (), GetActualHeight ());
	Size stretched = ApplySizeConstraints (specified);
	bool adjust = specified != GetRenderSize ();

	if (GetStretch () != StretchUniformToFill)
		specified = specified.Min (stretched);

	Rect paint = Rect (0, 0, specified.width, specified.height);
	
	if (!path_only) {
		Rect image = Rect (0, 0, source->GetPixelWidth (), source->GetPixelHeight ());

		if (GetStretch () == StretchNone)
			paint = paint.Union (image);

		if (image.width == 0.0 && image.height == 0.0)
			goto cleanup;

		pattern = cairo_pattern_create_for_surface (source->GetSurface (cr));
		image_brush_compute_pattern_matrix (&matrix, paint.width, paint.height, 
						    image.width, image.height,
						    GetStretch (), 
						    AlignmentXCenter, AlignmentYCenter, NULL, NULL);
		
		cairo_pattern_set_matrix (pattern, &matrix);
#if MAKE_EVERYTHING_SLOW_AND_BUGGY
		cairo_pattern_set_extend (pattern, CAIRO_EXTEND_PAD);
#endif
		if (cairo_pattern_status (pattern) == CAIRO_STATUS_SUCCESS) {
			cairo_set_source (cr, pattern);
		}
		cairo_pattern_destroy (pattern);
	}

	if (adjust) {
		// FIXME: Propagate error properly
		MoonError error;
		specified = MeasureOverrideWithError (specified, &error);
		paint = Rect ((stretched.width - specified.width) * 0.5, (stretched.height - specified.height) * 0.5, specified.width, specified.height);
	}
	
	if (!path_only)
		RenderLayoutClip (cr);

	paint = paint.Intersection (Rect (0, 0, stretched.width, stretched.height));
	paint.Draw (cr);
	
	if (!path_only)
		cairo_fill (cr);

cleanup:
	cairo_restore (cr);
	source->Unlock ();
}