The Tor Browser: gfx/thebes/RoundedRect.h@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-

     2  * This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 #include "gfxRect.h"

     8 namespace mozilla {

     9 /* A rounded rectangle abstraction.

    10  *

    11  * This can represent a rectangle with a different pair of radii on each corner.

    12  *

    13  * Note: CoreGraphics and Direct2D only support rounded rectangle with the same

    14  * radii on all corners. However, supporting CSS's border-radius requires the extra flexibility. */

    15 struct RoundedRect {

    16     RoundedRect(gfxRect &aRect, gfxCornerSizes &aCorners) : rect(aRect), corners(aCorners) { }

    17     void Deflate(gfxFloat aTopWidth, gfxFloat aBottomWidth, gfxFloat aLeftWidth, gfxFloat aRightWidth) {

    18         // deflate the internal rect

    19         rect.x += aLeftWidth;

    20         rect.y += aTopWidth;

    21         rect.width = std::max(0., rect.width - aLeftWidth - aRightWidth);

    22         rect.height = std::max(0., rect.height - aTopWidth - aBottomWidth);

    24         corners.sizes[NS_CORNER_TOP_LEFT].width  = std::max(0., corners.sizes[NS_CORNER_TOP_LEFT].width - aLeftWidth);

    25         corners.sizes[NS_CORNER_TOP_LEFT].height = std::max(0., corners.sizes[NS_CORNER_TOP_LEFT].height - aTopWidth);

    27         corners.sizes[NS_CORNER_TOP_RIGHT].width  = std::max(0., corners.sizes[NS_CORNER_TOP_RIGHT].width - aRightWidth);

    28         corners.sizes[NS_CORNER_TOP_RIGHT].height = std::max(0., corners.sizes[NS_CORNER_TOP_RIGHT].height - aTopWidth);

    30         corners.sizes[NS_CORNER_BOTTOM_LEFT].width  = std::max(0., corners.sizes[NS_CORNER_BOTTOM_LEFT].width - aLeftWidth);

    31         corners.sizes[NS_CORNER_BOTTOM_LEFT].height = std::max(0., corners.sizes[NS_CORNER_BOTTOM_LEFT].height - aBottomWidth);

    33         corners.sizes[NS_CORNER_BOTTOM_RIGHT].width  = std::max(0., corners.sizes[NS_CORNER_BOTTOM_RIGHT].width - aRightWidth);

    34         corners.sizes[NS_CORNER_BOTTOM_RIGHT].height = std::max(0., corners.sizes[NS_CORNER_BOTTOM_RIGHT].height - aBottomWidth);

    35     }

    36     gfxRect rect;

    37     gfxCornerSizes corners;

    38 };

    40 } // namespace mozilla

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