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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/. */
#ifndef GFX_RECT_H
#define GFX_RECT_H
#include "gfxTypes.h"
#include "gfxPoint.h"
#include "nsDebug.h"
#include "nsRect.h"
#include "mozilla/gfx/BaseMargin.h"
#include "mozilla/gfx/BaseRect.h"
#include "mozilla/gfx/MatrixFwd.h"
#include "mozilla/Assertions.h"
struct gfxQuad;
struct gfxMargin : public mozilla::gfx::BaseMargin<gfxFloat, gfxMargin> {
typedef mozilla::gfx::BaseMargin<gfxFloat, gfxMargin> Super;
// Constructors
gfxMargin() : Super() {}
gfxMargin(const gfxMargin& aMargin) : Super(aMargin) {}
gfxMargin(gfxFloat aTop, gfxFloat aRight, gfxFloat aBottom, gfxFloat aLeft)
: Super(aTop, aRight, aBottom, aLeft) {}
};
namespace mozilla {
namespace css {
enum Corner {
// this order is important!
eCornerTopLeft = 0,
eCornerTopRight = 1,
eCornerBottomRight = 2,
eCornerBottomLeft = 3,
eNumCorners = 4
};
} // namespace css
} // namespace mozilla
#define NS_CORNER_TOP_LEFT mozilla::css::eCornerTopLeft
#define NS_CORNER_TOP_RIGHT mozilla::css::eCornerTopRight
#define NS_CORNER_BOTTOM_RIGHT mozilla::css::eCornerBottomRight
#define NS_CORNER_BOTTOM_LEFT mozilla::css::eCornerBottomLeft
#define NS_NUM_CORNERS mozilla::css::eNumCorners
#define NS_FOR_CSS_CORNERS(var_) \
for (mozilla::css::Corner var_ = NS_CORNER_TOP_LEFT; \
var_ <= NS_CORNER_BOTTOM_LEFT; \
var_++)
static inline mozilla::css::Corner operator++(mozilla::css::Corner& corner, int) {
NS_PRECONDITION(corner >= NS_CORNER_TOP_LEFT &&
corner < NS_NUM_CORNERS, "Out of range corner");
corner = mozilla::css::Corner(corner + 1);
return corner;
}
struct gfxRect :
public mozilla::gfx::BaseRect<gfxFloat, gfxRect, gfxPoint, gfxSize, gfxMargin> {
typedef mozilla::gfx::BaseRect<gfxFloat, gfxRect, gfxPoint, gfxSize, gfxMargin> Super;
gfxRect() : Super() {}
gfxRect(const gfxPoint& aPos, const gfxSize& aSize) :
Super(aPos, aSize) {}
gfxRect(gfxFloat aX, gfxFloat aY, gfxFloat aWidth, gfxFloat aHeight) :
Super(aX, aY, aWidth, aHeight) {}
/**
* Return true if all components of this rect are within
* aEpsilon of integer coordinates, defined as
* |round(coord) - coord| <= |aEpsilon|
* for x,y,width,height.
*/
bool WithinEpsilonOfIntegerPixels(gfxFloat aEpsilon) const;
gfxPoint AtCorner(mozilla::css::Corner corner) const {
switch (corner) {
case NS_CORNER_TOP_LEFT: return TopLeft();
case NS_CORNER_TOP_RIGHT: return TopRight();
case NS_CORNER_BOTTOM_RIGHT: return BottomRight();
case NS_CORNER_BOTTOM_LEFT: return BottomLeft();
default:
NS_ERROR("Invalid corner!");
break;
}
return gfxPoint(0.0, 0.0);
}
gfxPoint CCWCorner(mozilla::Side side) const {
switch (side) {
case NS_SIDE_TOP: return TopLeft();
case NS_SIDE_RIGHT: return TopRight();
case NS_SIDE_BOTTOM: return BottomRight();
case NS_SIDE_LEFT: return BottomLeft();
}
MOZ_CRASH("Incomplete switch");
}
gfxPoint CWCorner(mozilla::Side side) const {
switch (side) {
case NS_SIDE_TOP: return TopRight();
case NS_SIDE_RIGHT: return BottomRight();
case NS_SIDE_BOTTOM: return BottomLeft();
case NS_SIDE_LEFT: return TopLeft();
}
MOZ_CRASH("Incomplete switch");
}
/* Conditions this border to Cairo's max coordinate space.
* The caller can check IsEmpty() after Condition() -- if it's TRUE,
* the caller can possibly avoid doing any extra rendering.
*/
void Condition();
void Scale(gfxFloat k) {
NS_ASSERTION(k >= 0.0, "Invalid (negative) scale factor");
x *= k;
y *= k;
width *= k;
height *= k;
}
void Scale(gfxFloat sx, gfxFloat sy) {
NS_ASSERTION(sx >= 0.0, "Invalid (negative) scale factor");
NS_ASSERTION(sy >= 0.0, "Invalid (negative) scale factor");
x *= sx;
y *= sy;
width *= sx;
height *= sy;
}
void ScaleInverse(gfxFloat k) {
NS_ASSERTION(k > 0.0, "Invalid (negative) scale factor");
x /= k;
y /= k;
width /= k;
height /= k;
}
/*
* Transform this rectangle with aMatrix, resulting in a gfxQuad.
*/
gfxQuad TransformToQuad(const mozilla::gfx::Matrix4x4 &aMatrix) const;
};
#endif /* GFX_RECT_H */
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