зеркало из https://github.com/mozilla/gecko-dev.git
51 строка
1.7 KiB
C
51 строка
1.7 KiB
C
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef GFX_POINT_H
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#define GFX_POINT_H
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#include "nsMathUtils.h"
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#include "mozilla/gfx/BaseSize.h"
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#include "mozilla/gfx/BasePoint.h"
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#include "nsSize.h"
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#include "nsPoint.h"
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#include "gfxTypes.h"
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typedef nsIntSize gfxIntSize;
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struct THEBES_API gfxSize : public mozilla::gfx::BaseSize<gfxFloat, gfxSize> {
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typedef mozilla::gfx::BaseSize<gfxFloat, gfxSize> Super;
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gfxSize() : Super() {}
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gfxSize(gfxFloat aWidth, gfxFloat aHeight) : Super(aWidth, aHeight) {}
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gfxSize(const nsIntSize& aSize) : Super(aSize.width, aSize.height) {}
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};
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struct THEBES_API gfxPoint : public mozilla::gfx::BasePoint<gfxFloat, gfxPoint> {
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typedef mozilla::gfx::BasePoint<gfxFloat, gfxPoint> Super;
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gfxPoint() : Super() {}
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gfxPoint(gfxFloat aX, gfxFloat aY) : Super(aX, aY) {}
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gfxPoint(const nsIntPoint& aPoint) : Super(aPoint.x, aPoint.y) {}
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// Round() is *not* rounding to nearest integer if the values are negative.
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// They are always rounding as floor(n + 0.5).
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// See https://bugzilla.mozilla.org/show_bug.cgi?id=410748#c14
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// And if you need similar method which is using NS_round(), you should
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// create new |RoundAwayFromZero()| method.
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gfxPoint& Round() {
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x = floor(x + 0.5);
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y = floor(y + 0.5);
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return *this;
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}
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bool WithinEpsilonOf(const gfxPoint& aPoint, gfxFloat aEpsilon) {
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return fabs(aPoint.x - x) < aEpsilon && fabs(aPoint.y - y) < aEpsilon;
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}
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};
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#endif /* GFX_POINT_H */
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