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ab2154bd1b
This greatly improves non-native theme on Windows in presence of fractional DPI (see bug 1657191). This matches what the Windows native theme does, to my knowledge, see ScaleForFrameDPI in nsNativeThemeWin.h. However I think the right fix is to not make these LayoutDeviceInt* things but LayoutDevice*. That's a bigger fix, and fits well as a follow-up to this bug, so let's land this in the meantime. Differential Revision: https://phabricator.services.mozilla.com/D97937
484 lines
17 KiB
C++
484 lines
17 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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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 "mozilla/Maybe.h"
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#include <cmath>
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namespace mozilla {
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template <typename>
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struct IsPixel;
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namespace gfx {
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template <class units, class F>
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struct RectTyped;
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template <class units>
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struct IntMarginTyped : 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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// XXX When all of the code is ported, the following functions to convert
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// to and from unknown types should be removed.
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static IntMarginTyped<units> FromUnknownMargin(
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const IntMarginTyped<UnknownUnits>& aMargin) {
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return IntMarginTyped<units>(aMargin.top, aMargin.right, aMargin.bottom,
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aMargin.left);
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}
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IntMarginTyped<UnknownUnits> ToUnknownMargin() const {
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return IntMarginTyped<UnknownUnits>(this->top, this->right, this->bottom,
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this->left);
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}
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};
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typedef IntMarginTyped<UnknownUnits> IntMargin;
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template <class units, class F = Float>
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struct MarginTyped : public BaseMargin<F, MarginTyped<units, F> >,
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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<F, MarginTyped<units, F> > Super;
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MarginTyped() : Super() {}
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MarginTyped(F aTop, F aRight, F aBottom, F 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(F(aMargin.top), F(aMargin.right), F(aMargin.bottom),
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F(aMargin.left)) {}
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bool WithinEpsilonOf(const MarginTyped& aOther, F aEpsilon) const {
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return fabs(this->left - aOther.left) < aEpsilon &&
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fabs(this->top - aOther.top) < aEpsilon &&
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fabs(this->right - aOther.right) < aEpsilon &&
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fabs(this->bottom - aOther.bottom) < aEpsilon;
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}
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IntMarginTyped<units> Rounded() const {
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return IntMarginTyped<units>(int32_t(std::floor(this->top + 0.5f)),
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int32_t(std::floor(this->right + 0.5f)),
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int32_t(std::floor(this->bottom + 0.5f)),
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int32_t(std::floor(this->left + 0.5f)));
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}
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};
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typedef MarginTyped<UnknownUnits> Margin;
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typedef MarginTyped<UnknownUnits, double> MarginDouble;
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template <class units>
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IntMarginTyped<units> RoundedToInt(const MarginTyped<units>& aMargin) {
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return aMargin.Rounded();
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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>,
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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>,
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IntSizeTyped<units>, IntMarginTyped<units> >
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Super;
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typedef IntRectTyped<units> Self;
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typedef IntParam<int32_t> ToInt;
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IntRectTyped() : Super() {}
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IntRectTyped(const IntPointTyped<units>& aPos,
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const IntSizeTyped<units>& aSize)
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: Super(aPos, aSize) {}
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IntRectTyped(ToInt aX, ToInt aY, ToInt aWidth, ToInt aHeight)
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: Super(aX.value, aY.value, aWidth.value, aHeight.value) {}
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static IntRectTyped<units> RoundIn(float aX, float aY, float aW, float aH) {
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return IntRectTyped<units>::RoundIn(
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RectTyped<units, float>(aX, aY, aW, aH));
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}
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static IntRectTyped<units> RoundOut(float aX, float aY, float aW, float aH) {
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return IntRectTyped<units>::RoundOut(
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RectTyped<units, float>(aX, aY, aW, aH));
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}
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static IntRectTyped<units> Round(float aX, float aY, float aW, float aH) {
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return IntRectTyped<units>::Round(RectTyped<units, float>(aX, aY, aW, aH));
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}
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static IntRectTyped<units> Truncate(float aX, float aY, float aW, float aH) {
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return IntRectTyped<units>(IntPointTyped<units>::Truncate(aX, aY),
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IntSizeTyped<units>::Truncate(aW, aH));
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}
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static IntRectTyped<units> RoundIn(const RectTyped<units, float>& aRect) {
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auto tmp(aRect);
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tmp.RoundIn();
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return IntRectTyped(int32_t(tmp.X()), int32_t(tmp.Y()),
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int32_t(tmp.Width()), int32_t(tmp.Height()));
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}
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static IntRectTyped<units> RoundOut(const RectTyped<units, float>& aRect) {
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auto tmp(aRect);
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tmp.RoundOut();
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return IntRectTyped(int32_t(tmp.X()), int32_t(tmp.Y()),
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int32_t(tmp.Width()), int32_t(tmp.Height()));
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}
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static IntRectTyped<units> Round(const RectTyped<units, float>& aRect) {
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auto tmp(aRect);
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tmp.Round();
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return IntRectTyped(int32_t(tmp.X()), int32_t(tmp.Y()),
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int32_t(tmp.Width()), int32_t(tmp.Height()));
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}
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static IntRectTyped<units> Truncate(const RectTyped<units, float>& aRect) {
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return IntRectTyped::Truncate(aRect.X(), aRect.Y(), aRect.Width(),
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aRect.Height());
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}
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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
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// to and from unknown types should be removed.
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static IntRectTyped<units> FromUnknownRect(
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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(),
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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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// Same as Union(), but in the cases where aRect is non-empty, the union is
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// done while guarding against overflow. If an overflow is detected, Nothing
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// is returned.
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[[nodiscard]] Maybe<Self> SafeUnion(const Self& aRect) const {
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if (this->IsEmpty()) {
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return aRect.Overflows() ? Nothing() : Some(aRect);
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} else if (aRect.IsEmpty()) {
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return Some(*static_cast<const Self*>(this));
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} else {
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return this->SafeUnionEdges(aRect);
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}
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}
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// Same as UnionEdges, but guards against overflow. If an overflow is
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// detected, Nothing is returned.
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[[nodiscard]] Maybe<Self> SafeUnionEdges(const Self& aRect) const {
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if (this->Overflows() || aRect.Overflows()) {
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return Nothing();
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}
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// If neither |this| nor |aRect| overflow, then their XMost/YMost values
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// should be safe to use.
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CheckedInt<int32_t> newX = std::min(this->x, aRect.x);
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CheckedInt<int32_t> newY = std::min(this->y, aRect.y);
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CheckedInt<int32_t> newXMost = std::max(this->XMost(), aRect.XMost());
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CheckedInt<int32_t> newYMost = std::max(this->YMost(), aRect.YMost());
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CheckedInt<int32_t> newW = newXMost - newX;
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CheckedInt<int32_t> newH = newYMost - newY;
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if (!newW.isValid() || !newH.isValid()) {
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return Nothing();
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}
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return Some(Self(newX.value(), newY.value(), newW.value(), newH.value()));
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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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return IntRectTyped<units>::IsEqualEdges(aRect);
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}
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void InflateToMultiple(const IntSizeTyped<units>& aTileSize) {
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if (this->IsEmpty()) {
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return;
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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->SetWidth(xMost - this->x);
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this->SetHeight(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, class F = Float>
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struct RectTyped : public BaseRect<F, RectTyped<units, F>, PointTyped<units, F>,
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SizeTyped<units, F>, MarginTyped<units, F> >,
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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<F, RectTyped<units, F>, PointTyped<units, F>,
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SizeTyped<units, F>, MarginTyped<units, F> >
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Super;
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RectTyped() : Super() {}
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RectTyped(const PointTyped<units, F>& aPos, const SizeTyped<units, F>& aSize)
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: Super(aPos, aSize) {}
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RectTyped(F _x, F _y, F _width, F _height) : Super(_x, _y, _width, _height) {}
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explicit RectTyped(const IntRectTyped<units>& rect)
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: Super(F(rect.X()), F(rect.Y()), F(rect.Width()), F(rect.Height())) {}
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void NudgeToIntegers() {
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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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*aOut =
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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, F>(F(aOut->X()), F(aOut->Y()), F(aOut->Width()),
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F(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
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// and from unknown types should be removed.
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static RectTyped<units, F> FromUnknownRect(
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const RectTyped<UnknownUnits, F>& rect) {
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return RectTyped<units, F>(rect.X(), rect.Y(), rect.Width(), rect.Height());
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}
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RectTyped<UnknownUnits, F> ToUnknownRect() const {
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return RectTyped<UnknownUnits, F>(this->X(), this->Y(), this->Width(),
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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, F>& aRect) const {
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return RectTyped<units, F>::IsEqualEdges(aRect);
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}
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bool WithinEpsilonOf(const RectTyped& aOther, F aEpsilon) const {
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return fabs(this->x - aOther.x) < aEpsilon &&
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fabs(this->y - aOther.y) < aEpsilon &&
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fabs(this->width - aOther.width) < aEpsilon &&
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fabs(this->height - aOther.height) < aEpsilon;
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}
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};
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typedef RectTyped<UnknownUnits> Rect;
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typedef RectTyped<UnknownUnits, double> RectDouble;
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template <class units>
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IntRectTyped<units> RoundedToInt(const RectTyped<units>& aRect) {
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RectTyped<units> copy(aRect);
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copy.Round();
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return IntRectTyped<units>(int32_t(copy.X()), int32_t(copy.Y()),
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int32_t(copy.Width()), int32_t(copy.Height()));
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}
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template <class units>
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bool RectIsInt32Safe(const RectTyped<units>& aRect) {
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float min = (float)std::numeric_limits<std::int32_t>::min();
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float max = (float)std::numeric_limits<std::int32_t>::max();
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return aRect.x > min && aRect.y > min && aRect.width < max &&
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aRect.height < max && aRect.XMost() < max && aRect.YMost() < max;
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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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return IntRectTyped<units>::RoundIn(aRect);
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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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return IntRectTyped<units>::RoundOut(aRect);
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}
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template <class units>
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IntRectTyped<units> TruncatedToInt(const RectTyped<units>& aRect) {
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return IntRectTyped<units>::Truncate(aRect);
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}
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template <class units>
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RectTyped<units> IntRectToRect(const IntRectTyped<units>& aRect) {
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return RectTyped<units>(aRect.X(), aRect.Y(), aRect.Width(), aRect.Height());
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}
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// Convenience functions for intersecting and unioning two rectangles wrapped in
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// Maybes.
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template <typename Rect>
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Maybe<Rect> IntersectMaybeRects(const Maybe<Rect>& a, const Maybe<Rect>& b) {
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if (!a) {
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return b;
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} else if (!b) {
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return a;
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} else {
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return Some(a->Intersect(*b));
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}
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}
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template <typename Rect>
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Maybe<Rect> UnionMaybeRects(const Maybe<Rect>& a, const Maybe<Rect>& b) {
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if (!a) {
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return b;
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} else if (!b) {
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return a;
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} else {
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return Some(a->Union(*b));
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}
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}
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struct RectCornerRadii final {
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Size radii[eCornerCount];
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RectCornerRadii() = default;
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explicit RectCornerRadii(Float radius) {
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for (const auto i : mozilla::AllPhysicalCorners()) {
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radii[i].SizeTo(radius, radius);
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}
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}
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RectCornerRadii(Float radiusX, Float radiusY) {
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for (const auto i : mozilla::AllPhysicalCorners()) {
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radii[i].SizeTo(radiusX, radiusY);
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}
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}
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RectCornerRadii(Float tl, Float tr, Float br, Float bl) {
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radii[eCornerTopLeft].SizeTo(tl, tl);
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radii[eCornerTopRight].SizeTo(tr, tr);
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radii[eCornerBottomRight].SizeTo(br, br);
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radii[eCornerBottomLeft].SizeTo(bl, bl);
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}
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RectCornerRadii(const Size& tl, const Size& tr, const Size& br,
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const Size& bl) {
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radii[eCornerTopLeft] = tl;
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radii[eCornerTopRight] = tr;
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radii[eCornerBottomRight] = br;
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radii[eCornerBottomLeft] = bl;
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}
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const Size& operator[](size_t aCorner) const { return radii[aCorner]; }
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Size& operator[](size_t aCorner) { return radii[aCorner]; }
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bool operator==(const RectCornerRadii& aOther) const {
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return TopLeft() == aOther.TopLeft() && TopRight() == aOther.TopRight() &&
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BottomRight() == aOther.BottomRight() &&
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BottomLeft() == aOther.BottomLeft();
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}
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bool AreRadiiSame() const {
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return TopLeft() == TopRight() && TopLeft() == BottomRight() &&
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TopLeft() == BottomLeft();
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}
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void Scale(Float aXScale, Float aYScale) {
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for (const auto i : mozilla::AllPhysicalCorners()) {
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radii[i].Scale(aXScale, aYScale);
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}
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}
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const Size TopLeft() const { return radii[eCornerTopLeft]; }
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Size& TopLeft() { return radii[eCornerTopLeft]; }
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const Size TopRight() const { return radii[eCornerTopRight]; }
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Size& TopRight() { return radii[eCornerTopRight]; }
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const Size BottomRight() const { return radii[eCornerBottomRight]; }
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Size& BottomRight() { return radii[eCornerBottomRight]; }
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const Size BottomLeft() const { return radii[eCornerBottomLeft]; }
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Size& BottomLeft() { return radii[eCornerBottomLeft]; }
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bool IsEmpty() const {
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return TopLeft().IsEmpty() && TopRight().IsEmpty() &&
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BottomRight().IsEmpty() && BottomLeft().IsEmpty();
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}
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};
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/* A rounded rectangle abstraction.
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*
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* This can represent a rectangle with a different pair of radii on each corner.
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*
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* Note: CoreGraphics and Direct2D only support rounded rectangle with the same
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* radii on all corners. However, supporting CSS's border-radius requires the
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* extra flexibility. */
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struct RoundedRect {
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typedef mozilla::gfx::RectCornerRadii RectCornerRadii;
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RoundedRect(const Rect& aRect, const RectCornerRadii& aCorners)
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: rect(aRect), corners(aCorners) {}
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void Deflate(Float aTopWidth, Float aBottomWidth, Float aLeftWidth,
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Float aRightWidth) {
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// deflate the internal rect
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rect.SetRect(rect.X() + aLeftWidth, rect.Y() + aTopWidth,
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std::max(0.f, rect.Width() - aLeftWidth - aRightWidth),
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std::max(0.f, rect.Height() - aTopWidth - aBottomWidth));
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corners.radii[mozilla::eCornerTopLeft].width = std::max(
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0.f, corners.radii[mozilla::eCornerTopLeft].width - aLeftWidth);
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corners.radii[mozilla::eCornerTopLeft].height = std::max(
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0.f, corners.radii[mozilla::eCornerTopLeft].height - aTopWidth);
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corners.radii[mozilla::eCornerTopRight].width = std::max(
|
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0.f, corners.radii[mozilla::eCornerTopRight].width - aRightWidth);
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corners.radii[mozilla::eCornerTopRight].height = std::max(
|
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0.f, corners.radii[mozilla::eCornerTopRight].height - aTopWidth);
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corners.radii[mozilla::eCornerBottomLeft].width = std::max(
|
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0.f, corners.radii[mozilla::eCornerBottomLeft].width - aLeftWidth);
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corners.radii[mozilla::eCornerBottomLeft].height = std::max(
|
|
0.f, corners.radii[mozilla::eCornerBottomLeft].height - aBottomWidth);
|
|
|
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corners.radii[mozilla::eCornerBottomRight].width = std::max(
|
|
0.f, corners.radii[mozilla::eCornerBottomRight].width - aRightWidth);
|
|
corners.radii[mozilla::eCornerBottomRight].height = std::max(
|
|
0.f, corners.radii[mozilla::eCornerBottomRight].height - aBottomWidth);
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}
|
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Rect rect;
|
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RectCornerRadii corners;
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|
};
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} // namespace gfx
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} // namespace mozilla
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#endif /* MOZILLA_GFX_RECT_H_ */
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