1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/thebes/RoundedRect.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,40 @@
1.4 +/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
1.5 + * This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#include "gfxRect.h"
1.10 +
1.11 +namespace mozilla {
1.12 +/* A rounded rectangle abstraction.
1.13 + *
1.14 + * This can represent a rectangle with a different pair of radii on each corner.
1.15 + *
1.16 + * Note: CoreGraphics and Direct2D only support rounded rectangle with the same
1.17 + * radii on all corners. However, supporting CSS's border-radius requires the extra flexibility. */
1.18 +struct RoundedRect {
1.19 + RoundedRect(gfxRect &aRect, gfxCornerSizes &aCorners) : rect(aRect), corners(aCorners) { }
1.20 + void Deflate(gfxFloat aTopWidth, gfxFloat aBottomWidth, gfxFloat aLeftWidth, gfxFloat aRightWidth) {
1.21 + // deflate the internal rect
1.22 + rect.x += aLeftWidth;
1.23 + rect.y += aTopWidth;
1.24 + rect.width = std::max(0., rect.width - aLeftWidth - aRightWidth);
1.25 + rect.height = std::max(0., rect.height - aTopWidth - aBottomWidth);
1.26 +
1.27 + corners.sizes[NS_CORNER_TOP_LEFT].width = std::max(0., corners.sizes[NS_CORNER_TOP_LEFT].width - aLeftWidth);
1.28 + corners.sizes[NS_CORNER_TOP_LEFT].height = std::max(0., corners.sizes[NS_CORNER_TOP_LEFT].height - aTopWidth);
1.29 +
1.30 + corners.sizes[NS_CORNER_TOP_RIGHT].width = std::max(0., corners.sizes[NS_CORNER_TOP_RIGHT].width - aRightWidth);
1.31 + corners.sizes[NS_CORNER_TOP_RIGHT].height = std::max(0., corners.sizes[NS_CORNER_TOP_RIGHT].height - aTopWidth);
1.32 +
1.33 + corners.sizes[NS_CORNER_BOTTOM_LEFT].width = std::max(0., corners.sizes[NS_CORNER_BOTTOM_LEFT].width - aLeftWidth);
1.34 + corners.sizes[NS_CORNER_BOTTOM_LEFT].height = std::max(0., corners.sizes[NS_CORNER_BOTTOM_LEFT].height - aBottomWidth);
1.35 +
1.36 + corners.sizes[NS_CORNER_BOTTOM_RIGHT].width = std::max(0., corners.sizes[NS_CORNER_BOTTOM_RIGHT].width - aRightWidth);
1.37 + corners.sizes[NS_CORNER_BOTTOM_RIGHT].height = std::max(0., corners.sizes[NS_CORNER_BOTTOM_RIGHT].height - aBottomWidth);
1.38 + }
1.39 + gfxRect rect;
1.40 + gfxCornerSizes corners;
1.41 +};
1.42 +
1.43 +} // namespace mozilla
