mirror of
https://github.com/classilla/tenfourfox.git
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149 lines
4.8 KiB
C++
149 lines
4.8 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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namespace mozilla {
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namespace css {
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enum Corner {
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// this order is important!
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eCornerTopLeft = 0,
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eCornerTopRight = 1,
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eCornerBottomRight = 2,
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eCornerBottomLeft = 3,
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eNumCorners = 4
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};
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} // namespace css
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} // namespace mozilla
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#define NS_CORNER_TOP_LEFT mozilla::css::eCornerTopLeft
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#define NS_CORNER_TOP_RIGHT mozilla::css::eCornerTopRight
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#define NS_CORNER_BOTTOM_RIGHT mozilla::css::eCornerBottomRight
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#define NS_CORNER_BOTTOM_LEFT mozilla::css::eCornerBottomLeft
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#define NS_NUM_CORNERS mozilla::css::eNumCorners
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#define NS_FOR_CSS_CORNERS(var_) \
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for (mozilla::css::Corner var_ = NS_CORNER_TOP_LEFT; \
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var_ <= NS_CORNER_BOTTOM_LEFT; \
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var_++)
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static inline mozilla::css::Corner operator++(mozilla::css::Corner& corner, int) {
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NS_PRECONDITION(corner >= NS_CORNER_TOP_LEFT &&
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corner < NS_NUM_CORNERS, "Out of range corner");
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corner = mozilla::css::Corner(corner + 1);
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return corner;
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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::css::Corner corner) const {
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switch (corner) {
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case NS_CORNER_TOP_LEFT: return TopLeft();
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case NS_CORNER_TOP_RIGHT: return TopRight();
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case NS_CORNER_BOTTOM_RIGHT: return BottomRight();
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case NS_CORNER_BOTTOM_LEFT: return BottomLeft();
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default:
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NS_ERROR("Invalid corner!");
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break;
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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 NS_SIDE_TOP: return TopLeft();
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case NS_SIDE_RIGHT: return TopRight();
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case NS_SIDE_BOTTOM: return BottomRight();
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case NS_SIDE_LEFT: 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 NS_SIDE_TOP: return TopRight();
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case NS_SIDE_RIGHT: return BottomRight();
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case NS_SIDE_BOTTOM: return BottomLeft();
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case NS_SIDE_LEFT: 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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