зеркало из https://github.com/mozilla/gecko-dev.git
116 строки
3.7 KiB
C
116 строки
3.7 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_RECT_H
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#define GFX_RECT_H
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#include "gfxTypes.h"
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#include "gfxPoint.h"
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#include "nsDebug.h"
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#include "nsRect.h"
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#include "mozilla/gfx/BaseMargin.h"
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#include "mozilla/gfx/BaseRect.h"
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#include "mozilla/gfx/MatrixFwd.h"
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#include "mozilla/Assertions.h"
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struct gfxQuad;
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struct gfxMargin : public mozilla::gfx::BaseMargin<gfxFloat, gfxMargin> {
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typedef mozilla::gfx::BaseMargin<gfxFloat, gfxMargin> Super;
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// Constructors
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gfxMargin() : Super() {}
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gfxMargin(const gfxMargin& aMargin) : Super(aMargin) {}
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gfxMargin(gfxFloat aTop, gfxFloat aRight, gfxFloat aBottom, gfxFloat aLeft)
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: Super(aTop, aRight, aBottom, aLeft) {}
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};
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struct gfxRect :
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public mozilla::gfx::BaseRect<gfxFloat, gfxRect, gfxPoint, gfxSize, gfxMargin> {
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typedef mozilla::gfx::BaseRect<gfxFloat, gfxRect, gfxPoint, gfxSize, gfxMargin> Super;
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gfxRect() : Super() {}
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gfxRect(const gfxPoint& aPos, const gfxSize& aSize) :
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Super(aPos, aSize) {}
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gfxRect(gfxFloat aX, gfxFloat aY, gfxFloat aWidth, gfxFloat aHeight) :
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Super(aX, aY, aWidth, aHeight) {}
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/**
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* Return true if all components of this rect are within
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* aEpsilon of integer coordinates, defined as
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* |round(coord) - coord| <= |aEpsilon|
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* for x,y,width,height.
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*/
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bool WithinEpsilonOfIntegerPixels(gfxFloat aEpsilon) const;
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gfxPoint AtCorner(mozilla::Corner corner) const {
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switch (corner) {
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case mozilla::eCornerTopLeft: return TopLeft();
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case mozilla::eCornerTopRight: return TopRight();
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case mozilla::eCornerBottomRight: return BottomRight();
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case mozilla::eCornerBottomLeft: return BottomLeft();
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}
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return gfxPoint(0.0, 0.0);
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}
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gfxPoint CCWCorner(mozilla::Side side) const {
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switch (side) {
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case mozilla::eSideTop: return TopLeft();
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case mozilla::eSideRight: return TopRight();
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case mozilla::eSideBottom: return BottomRight();
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case mozilla::eSideLeft: return BottomLeft();
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}
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MOZ_CRASH("Incomplete switch");
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}
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gfxPoint CWCorner(mozilla::Side side) const {
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switch (side) {
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case mozilla::eSideTop: return TopRight();
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case mozilla::eSideRight: return BottomRight();
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case mozilla::eSideBottom: return BottomLeft();
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case mozilla::eSideLeft: return TopLeft();
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}
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MOZ_CRASH("Incomplete switch");
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}
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/* Conditions this border to Cairo's max coordinate space.
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* The caller can check IsEmpty() after Condition() -- if it's TRUE,
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* the caller can possibly avoid doing any extra rendering.
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*/
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void Condition();
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void Scale(gfxFloat k) {
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NS_ASSERTION(k >= 0.0, "Invalid (negative) scale factor");
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x *= k;
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y *= k;
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width *= k;
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height *= k;
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}
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void Scale(gfxFloat sx, gfxFloat sy) {
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NS_ASSERTION(sx >= 0.0, "Invalid (negative) scale factor");
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NS_ASSERTION(sy >= 0.0, "Invalid (negative) scale factor");
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x *= sx;
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y *= sy;
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width *= sx;
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height *= sy;
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}
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void ScaleInverse(gfxFloat k) {
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NS_ASSERTION(k > 0.0, "Invalid (negative) scale factor");
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x /= k;
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y /= k;
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width /= k;
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height /= k;
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}
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/*
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* Transform this rectangle with aMatrix, resulting in a gfxQuad.
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*/
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gfxQuad TransformToQuad(const mozilla::gfx::Matrix4x4 &aMatrix) const;
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};
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#endif /* GFX_RECT_H */
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