C++ (Cpp) Brush::Fill Examples

Example #1

File: border.cpp Project: 499940913/moon

void 
Border::Render (cairo_t *cr, Region *region, bool path_only)
{
	Brush *background = GetBackground ();
	Brush *border_brush = GetBorderBrush ();

	cairo_save (cr);
	if (!path_only)
		RenderLayoutClip (cr);

	CornerRadius r = *GetCornerRadius ();
	CornerRadius *round =  &r;
	Thickness thickness = *GetBorderThickness ();
	Rect paint_border = extents;
	Rect paint_background = paint_border.GrowBy (-thickness);

	CornerRadius inner_adjusted = *round;
	inner_adjusted.topLeft = MAX (round->topLeft - MAX (thickness.left, thickness.top) * .5, 0);
	inner_adjusted.topRight = MAX (round->topRight - MAX (thickness.right, thickness.top) * .5, 0);
	inner_adjusted.bottomRight = MAX (round->bottomRight - MAX (thickness.right, thickness.bottom) * .5, 0);
	inner_adjusted.bottomLeft = MAX (round->bottomLeft - MAX (thickness.left, thickness.bottom) * .5, 0);

	CornerRadius outer_adjusted = *round;
	outer_adjusted.topLeft = outer_adjusted.topLeft ? MAX (round->topLeft + MAX (thickness.left, thickness.top) * .5, 0) : 0;
	outer_adjusted.topRight = outer_adjusted.topRight ? MAX (round->topRight + MAX (thickness.right, thickness.top) * .5, 0) : 0;
	outer_adjusted.bottomRight = outer_adjusted.bottomRight ? MAX (round->bottomRight + MAX (thickness.right, thickness.bottom) * .5, 0) : 0;
	outer_adjusted.bottomLeft = outer_adjusted.bottomLeft ? MAX (round->bottomLeft + MAX (thickness.left, thickness.bottom) * .5, 0) : 0;

	/* 
	 * NOTE filling this way can leave alpha artifacts between the border fill and bg fill
	 * but some simple inspection of the ms results make me think that is what happens there
	 * too.
	 */
	cairo_new_path (cr);
	cairo_set_fill_rule (cr, CAIRO_FILL_RULE_EVEN_ODD);

	if (border_brush && !paint_border.IsEmpty ()) {
		border_brush->SetupBrush (cr, paint_border);

		paint_border.Draw (cr, &outer_adjusted);
		paint_background.Draw (cr, &inner_adjusted);

		if (!path_only)
			border_brush->Fill (cr);
	}

	if (background && !paint_background.IsEmpty ()) {
		background->SetupBrush (cr, paint_background);

		paint_background.Draw (cr, &inner_adjusted);

		if (!path_only)
			background->Fill (cr);
	}
	
	cairo_restore (cr);
}