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import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

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Roy Tam 2018-01-19 03:59:58 +08:00
commit dcd9973243
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gfx/thebes/RoundedRect.h Normal file
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/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "gfxRect.h"
#include "mozilla/gfx/PathHelpers.h"
namespace mozilla {
/* A rounded rectangle abstraction.
*
* This can represent a rectangle with a different pair of radii on each corner.
*
* Note: CoreGraphics and Direct2D only support rounded rectangle with the same
* radii on all corners. However, supporting CSS's border-radius requires the extra flexibility. */
struct RoundedRect {
typedef mozilla::gfx::RectCornerRadii RectCornerRadii;
RoundedRect(gfxRect &aRect, RectCornerRadii &aCorners) : rect(aRect), corners(aCorners) { }
void Deflate(gfxFloat aTopWidth, gfxFloat aBottomWidth, gfxFloat aLeftWidth, gfxFloat aRightWidth) {
// deflate the internal rect
rect.x += aLeftWidth;
rect.y += aTopWidth;
rect.width = std::max(0., rect.width - aLeftWidth - aRightWidth);
rect.height = std::max(0., rect.height - aTopWidth - aBottomWidth);
corners.radii[NS_CORNER_TOP_LEFT].width = std::max(0., corners.radii[NS_CORNER_TOP_LEFT].width - aLeftWidth);
corners.radii[NS_CORNER_TOP_LEFT].height = std::max(0., corners.radii[NS_CORNER_TOP_LEFT].height - aTopWidth);
corners.radii[NS_CORNER_TOP_RIGHT].width = std::max(0., corners.radii[NS_CORNER_TOP_RIGHT].width - aRightWidth);
corners.radii[NS_CORNER_TOP_RIGHT].height = std::max(0., corners.radii[NS_CORNER_TOP_RIGHT].height - aTopWidth);
corners.radii[NS_CORNER_BOTTOM_LEFT].width = std::max(0., corners.radii[NS_CORNER_BOTTOM_LEFT].width - aLeftWidth);
corners.radii[NS_CORNER_BOTTOM_LEFT].height = std::max(0., corners.radii[NS_CORNER_BOTTOM_LEFT].height - aBottomWidth);
corners.radii[NS_CORNER_BOTTOM_RIGHT].width = std::max(0., corners.radii[NS_CORNER_BOTTOM_RIGHT].width - aRightWidth);
corners.radii[NS_CORNER_BOTTOM_RIGHT].height = std::max(0., corners.radii[NS_CORNER_BOTTOM_RIGHT].height - aBottomWidth);
}
gfxRect rect;
RectCornerRadii corners;
};
} // namespace mozilla