mirror of
https://github.com/mozilla/gecko-dev.git
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216 lines
7.2 KiB
C++
216 lines
7.2 KiB
C++
/* -*- Mode: c++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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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 MOZILLA_GFX_RECT_H_
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#define MOZILLA_GFX_RECT_H_
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#include "BaseRect.h"
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#include "BaseMargin.h"
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#include "NumericTools.h"
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#include "Point.h"
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#include "Tools.h"
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#include <cmath>
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namespace mozilla {
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template <typename> struct IsPixel;
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namespace gfx {
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template<class units>
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struct IntMarginTyped:
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public BaseMargin<int32_t, IntMarginTyped<units> >,
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public units {
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static_assert(IsPixel<units>::value,
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"'units' must be a coordinate system tag");
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typedef BaseMargin<int32_t, IntMarginTyped<units> > Super;
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IntMarginTyped() : Super() {}
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IntMarginTyped(int32_t aTop, int32_t aRight, int32_t aBottom, int32_t aLeft) :
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Super(aTop, aRight, aBottom, aLeft) {}
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};
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typedef IntMarginTyped<UnknownUnits> IntMargin;
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template<class units>
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struct MarginTyped:
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public BaseMargin<Float, MarginTyped<units> >,
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public units {
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static_assert(IsPixel<units>::value,
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"'units' must be a coordinate system tag");
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typedef BaseMargin<Float, MarginTyped<units> > Super;
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MarginTyped() : Super() {}
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MarginTyped(Float aTop, Float aRight, Float aBottom, Float aLeft) :
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Super(aTop, aRight, aBottom, aLeft) {}
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explicit MarginTyped(const IntMarginTyped<units>& aMargin) :
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Super(float(aMargin.top), float(aMargin.right),
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float(aMargin.bottom), float(aMargin.left)) {}
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};
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typedef MarginTyped<UnknownUnits> Margin;
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template<class units>
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IntMarginTyped<units> RoundedToInt(const MarginTyped<units>& aMargin)
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{
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return IntMarginTyped<units>(int32_t(floorf(aMargin.top + 0.5f)),
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int32_t(floorf(aMargin.right + 0.5f)),
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int32_t(floorf(aMargin.bottom + 0.5f)),
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int32_t(floorf(aMargin.left + 0.5f)));
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}
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template<class units>
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struct IntRectTyped :
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public BaseRect<int32_t, IntRectTyped<units>, IntPointTyped<units>, IntSizeTyped<units>, IntMarginTyped<units> >,
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public units {
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static_assert(IsPixel<units>::value,
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"'units' must be a coordinate system tag");
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typedef BaseRect<int32_t, IntRectTyped<units>, IntPointTyped<units>, IntSizeTyped<units>, IntMarginTyped<units> > Super;
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IntRectTyped() : Super() {}
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IntRectTyped(const IntPointTyped<units>& aPos, const IntSizeTyped<units>& aSize) :
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Super(aPos, aSize) {}
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IntRectTyped(int32_t _x, int32_t _y, int32_t _width, int32_t _height) :
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Super(_x, _y, _width, _height) {}
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// Rounding isn't meaningful on an integer rectangle.
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void Round() {}
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void RoundIn() {}
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void RoundOut() {}
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// XXX When all of the code is ported, the following functions to convert to and from
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// unknown types should be removed.
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static IntRectTyped<units> FromUnknownRect(const IntRectTyped<UnknownUnits>& rect) {
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return IntRectTyped<units>(rect.x, rect.y, rect.width, rect.height);
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}
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IntRectTyped<UnknownUnits> ToUnknownRect() const {
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return IntRectTyped<UnknownUnits>(this->x, this->y, this->width, this->height);
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}
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bool Overflows() const {
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CheckedInt<int32_t> xMost = this->x;
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xMost += this->width;
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CheckedInt<int32_t> yMost = this->y;
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yMost += this->height;
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return !xMost.isValid() || !yMost.isValid();
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}
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// This is here only to keep IPDL-generated code happy. DO NOT USE.
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bool operator==(const IntRectTyped<units>& aRect) const
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{
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return IntRectTyped<units>::IsEqualEdges(aRect);
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}
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void InflateToMultiple(const IntSizeTyped<units>& aTileSize)
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{
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int32_t yMost = this->YMost();
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int32_t xMost = this->XMost();
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this->x = mozilla::RoundDownToMultiple(this->x, aTileSize.width);
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this->y = mozilla::RoundDownToMultiple(this->y, aTileSize.height);
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xMost = mozilla::RoundUpToMultiple(xMost, aTileSize.width);
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yMost = mozilla::RoundUpToMultiple(yMost, aTileSize.height);
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this->width = xMost - this->x;
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this->height = yMost - this->y;
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}
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};
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typedef IntRectTyped<UnknownUnits> IntRect;
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template<class units>
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struct RectTyped :
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public BaseRect<Float, RectTyped<units>, PointTyped<units>, SizeTyped<units>, MarginTyped<units> >,
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public units {
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static_assert(IsPixel<units>::value,
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"'units' must be a coordinate system tag");
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typedef BaseRect<Float, RectTyped<units>, PointTyped<units>, SizeTyped<units>, MarginTyped<units> > Super;
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RectTyped() : Super() {}
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RectTyped(const PointTyped<units>& aPos, const SizeTyped<units>& aSize) :
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Super(aPos, aSize) {}
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RectTyped(Float _x, Float _y, Float _width, Float _height) :
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Super(_x, _y, _width, _height) {}
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explicit RectTyped(const IntRectTyped<units>& rect) :
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Super(float(rect.x), float(rect.y),
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float(rect.width), float(rect.height)) {}
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void NudgeToIntegers()
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{
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NudgeToInteger(&(this->x));
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NudgeToInteger(&(this->y));
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NudgeToInteger(&(this->width));
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NudgeToInteger(&(this->height));
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}
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bool ToIntRect(IntRectTyped<units> *aOut) const
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{
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*aOut = IntRectTyped<units>(int32_t(this->X()), int32_t(this->Y()),
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int32_t(this->Width()), int32_t(this->Height()));
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return RectTyped<units>(Float(aOut->x), Float(aOut->y),
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Float(aOut->width), Float(aOut->height))
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.IsEqualEdges(*this);
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}
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// XXX When all of the code is ported, the following functions to convert to and from
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// unknown types should be removed.
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static RectTyped<units> FromUnknownRect(const RectTyped<UnknownUnits>& rect) {
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return RectTyped<units>(rect.x, rect.y, rect.width, rect.height);
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}
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RectTyped<UnknownUnits> ToUnknownRect() const {
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return RectTyped<UnknownUnits>(this->x, this->y, this->width, this->height);
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}
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// This is here only to keep IPDL-generated code happy. DO NOT USE.
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bool operator==(const RectTyped<units>& aRect) const
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{
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return RectTyped<units>::IsEqualEdges(aRect);
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}
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};
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typedef RectTyped<UnknownUnits> Rect;
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template<class units>
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IntRectTyped<units> RoundedToInt(const RectTyped<units>& aRect)
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{
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return IntRectTyped<units>(int32_t(floorf(aRect.x + 0.5f)),
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int32_t(floorf(aRect.y + 0.5f)),
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int32_t(floorf(aRect.width + 0.5f)),
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int32_t(floorf(aRect.height + 0.5f)));
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}
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template<class units>
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IntRectTyped<units> RoundedIn(const RectTyped<units>& aRect)
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{
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RectTyped<units> copy(aRect);
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copy.RoundIn();
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return IntRectTyped<units>(int32_t(copy.x),
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int32_t(copy.y),
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int32_t(copy.width),
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int32_t(copy.height));
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}
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template<class units>
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IntRectTyped<units> RoundedOut(const RectTyped<units>& aRect)
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{
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RectTyped<units> copy(aRect);
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copy.RoundOut();
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return IntRectTyped<units>(int32_t(copy.x),
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int32_t(copy.y),
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int32_t(copy.width),
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int32_t(copy.height));
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}
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}
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}
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#endif /* MOZILLA_GFX_RECT_H_ */
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