Adding upstream version 124.0.1.upstream/124.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 405 insertions, 0 deletions

diff --git a/gfx/2d/Point.h b/gfx/2d/Point.h
new file mode 100644
index 0000000000..9000cb4e9a
--- /dev/null
+++ b/gfx/2d/Point.h
@@ -0,0 +1,405 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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 MOZILLA_GFX_POINT_H_
+#define MOZILLA_GFX_POINT_H_
+
+#include "mozilla/Attributes.h"
+#include "Types.h"
+#include "Coord.h"
+#include "BaseCoord.h"
+#include "BasePoint.h"
+#include "BasePoint3D.h"
+#include "BasePoint4D.h"
+#include "BaseSize.h"
+#include "mozilla/Maybe.h"
+#include "mozilla/gfx/NumericTools.h"
+
+#include <cmath>
+#include <type_traits>
+
+namespace mozilla {
+
+template <typename>
+struct IsPixel;
+
+template <>
+struct IsPixel<gfx::UnknownUnits> : std::true_type {};
+
+namespace gfx {
+
+/// Use this for parameters of functions to allow implicit conversions to
+/// integer types but not floating point types.
+/// We use this wrapper to prevent IntSize and IntPoint's constructors to
+/// take foating point values as parameters, and not require their constructors
+/// to have implementations for each permutation of integer types.
+template <typename T>
+struct IntParam {
+  constexpr MOZ_IMPLICIT IntParam(char val) : value(val) {}
+  constexpr MOZ_IMPLICIT IntParam(unsigned char val) : value(val) {}
+  constexpr MOZ_IMPLICIT IntParam(short val) : value(val) {}
+  constexpr MOZ_IMPLICIT IntParam(unsigned short val) : value(val) {}
+  constexpr MOZ_IMPLICIT IntParam(int val) : value(val) {}
+  constexpr MOZ_IMPLICIT IntParam(unsigned int val) : value(val) {}
+  constexpr MOZ_IMPLICIT IntParam(long val) : value(val) {}
+  constexpr MOZ_IMPLICIT IntParam(unsigned long val) : value(val) {}
+  constexpr MOZ_IMPLICIT IntParam(long long val) : value(val) {}
+  constexpr MOZ_IMPLICIT IntParam(unsigned long long val) : value(val) {}
+  template <typename Unit>
+  constexpr MOZ_IMPLICIT IntParam(IntCoordTyped<Unit> val) : value(val) {}
+
+  // Disable the evil ones!
+  MOZ_IMPLICIT IntParam(float val) = delete;
+  MOZ_IMPLICIT IntParam(double val) = delete;
+
+  T value;
+};
+
+template <class Units, class>
+struct PointTyped;
+template <class Units, class>
+struct SizeTyped;
+
+template <class Units>
+struct MOZ_EMPTY_BASES IntPointTyped
+    : public BasePoint<int32_t, IntPointTyped<Units>, IntCoordTyped<Units> >,
+      public Units {
+  static_assert(IsPixel<Units>::value,
+                "'Units' must be a coordinate system tag");
+
+  typedef IntParam<int32_t> ToInt;
+  typedef IntCoordTyped<Units> Coord;
+  typedef BasePoint<int32_t, IntPointTyped<Units>, IntCoordTyped<Units> > Super;
+
+  constexpr IntPointTyped() : Super() {
+    static_assert(sizeof(IntPointTyped) == sizeof(int32_t) * 2,
+                  "Would be unfortunate otherwise!");
+  }
+  constexpr IntPointTyped(ToInt aX, ToInt aY)
+      : Super(Coord(aX.value), Coord(aY.value)) {}
+
+  static IntPointTyped Round(float aX, float aY) {
+    return IntPointTyped(int32_t(floorf(aX + 0.5f)),
+                         int32_t(floorf(aY + 0.5f)));
+  }
+
+  static IntPointTyped Ceil(float aX, float aY) {
+    return IntPointTyped(int32_t(ceilf(aX)), int32_t(ceilf(aY)));
+  }
+
+  static IntPointTyped Floor(float aX, float aY) {
+    return IntPointTyped(int32_t(floorf(aX)), int32_t(floorf(aY)));
+  }
+
+  static IntPointTyped Truncate(float aX, float aY) {
+    return IntPointTyped(int32_t(aX), int32_t(aY));
+  }
+
+  static IntPointTyped Round(const PointTyped<Units, float>& aPoint);
+  static IntPointTyped Ceil(const PointTyped<Units, float>& aPoint);
+  static IntPointTyped Floor(const PointTyped<Units, float>& aPoint);
+  static IntPointTyped Truncate(const PointTyped<Units, float>& aPoint);
+
+  // XXX When all of the code is ported, the following functions to convert to
+  // and from unknown types should be removed.
+
+  static IntPointTyped FromUnknownPoint(
+      const IntPointTyped<UnknownUnits>& aPoint) {
+    return IntPointTyped<Units>(aPoint.x, aPoint.y);
+  }
+
+  IntPointTyped<UnknownUnits> ToUnknownPoint() const {
+    return IntPointTyped<UnknownUnits>(this->x, this->y);
+  }
+
+  IntPointTyped RoundedToMultiple(int32_t aMultiplier) const {
+    return {RoundToMultiple(this->x, aMultiplier),
+            RoundToMultiple(this->y, aMultiplier)};
+  }
+};
+typedef IntPointTyped<UnknownUnits> IntPoint;
+
+template <class Units, class F = Float>
+struct MOZ_EMPTY_BASES PointTyped
+    : public BasePoint<F, PointTyped<Units, F>, CoordTyped<Units, F> >,
+      public Units {
+  static_assert(IsPixel<Units>::value,
+                "'Units' must be a coordinate system tag");
+
+  typedef CoordTyped<Units, F> Coord;
+  typedef BasePoint<F, PointTyped<Units, F>, CoordTyped<Units, F> > Super;
+
+  constexpr PointTyped() : Super() {
+    static_assert(sizeof(PointTyped) == sizeof(F) * 2,
+                  "Would be unfortunate otherwise!");
+  }
+  constexpr PointTyped(F aX, F aY) : Super(Coord(aX), Coord(aY)) {}
+  // The mixed-type constructors (Float, Coord) and (Coord, Float) are needed to
+  // avoid ambiguities because Coord is implicitly convertible to Float.
+  constexpr PointTyped(F aX, Coord aY) : Super(Coord(aX), aY) {}
+  constexpr PointTyped(Coord aX, F aY) : Super(aX, Coord(aY)) {}
+  constexpr PointTyped(Coord aX, Coord aY) : Super(aX.value, aY.value) {}
+  constexpr MOZ_IMPLICIT PointTyped(const IntPointTyped<Units>& point)
+      : Super(F(point.x), F(point.y)) {}
+
+  bool WithinEpsilonOf(const PointTyped<Units, F>& aPoint, F aEpsilon) const {
+    return fabs(aPoint.x - this->x) < aEpsilon &&
+           fabs(aPoint.y - this->y) < aEpsilon;
+  }
+
+  // XXX When all of the code is ported, the following functions to convert to
+  // and from unknown types should be removed.
+
+  static PointTyped<Units, F> FromUnknownPoint(
+      const PointTyped<UnknownUnits, F>& aPoint) {
+    return PointTyped<Units, F>(aPoint.x, aPoint.y);
+  }
+
+  PointTyped<UnknownUnits, F> ToUnknownPoint() const {
+    return PointTyped<UnknownUnits, F>(this->x, this->y);
+  }
+};
+typedef PointTyped<UnknownUnits> Point;
+typedef PointTyped<UnknownUnits, double> PointDouble;
+
+template <class Units>
+IntPointTyped<Units> RoundedToInt(const PointTyped<Units>& aPoint) {
+  return IntPointTyped<Units>::Round(aPoint.x, aPoint.y);
+}
+
+template <class Units>
+IntPointTyped<Units> TruncatedToInt(const PointTyped<Units>& aPoint) {
+  return IntPointTyped<Units>::Truncate(aPoint.x, aPoint.y);
+}
+
+template <class Units, class F = Float>
+struct Point3DTyped : public BasePoint3D<F, Point3DTyped<Units, F> > {
+  static_assert(IsPixel<Units>::value,
+                "'Units' must be a coordinate system tag");
+
+  typedef BasePoint3D<F, Point3DTyped<Units, F> > Super;
+
+  Point3DTyped() : Super() {
+    static_assert(sizeof(Point3DTyped) == sizeof(F) * 3,
+                  "Would be unfortunate otherwise!");
+  }
+  Point3DTyped(F aX, F aY, F aZ) : Super(aX, aY, aZ) {}
+
+  // XXX When all of the code is ported, the following functions to convert to
+  // and from unknown types should be removed.
+
+  static Point3DTyped<Units, F> FromUnknownPoint(
+      const Point3DTyped<UnknownUnits, F>& aPoint) {
+    return Point3DTyped<Units, F>(aPoint.x, aPoint.y, aPoint.z);
+  }
+
+  Point3DTyped<UnknownUnits, F> ToUnknownPoint() const {
+    return Point3DTyped<UnknownUnits, F>(this->x, this->y, this->z);
+  }
+};
+typedef Point3DTyped<UnknownUnits> Point3D;
+typedef Point3DTyped<UnknownUnits, double> PointDouble3D;
+
+template <typename Units>
+IntPointTyped<Units> IntPointTyped<Units>::Round(
+    const PointTyped<Units, float>& aPoint) {
+  return IntPointTyped::Round(aPoint.x, aPoint.y);
+}
+
+template <typename Units>
+IntPointTyped<Units> IntPointTyped<Units>::Ceil(
+    const PointTyped<Units, float>& aPoint) {
+  return IntPointTyped::Ceil(aPoint.x, aPoint.y);
+}
+
+template <typename Units>
+IntPointTyped<Units> IntPointTyped<Units>::Floor(
+    const PointTyped<Units, float>& aPoint) {
+  return IntPointTyped::Floor(aPoint.x, aPoint.y);
+}
+
+template <typename Units>
+IntPointTyped<Units> IntPointTyped<Units>::Truncate(
+    const PointTyped<Units, float>& aPoint) {
+  return IntPointTyped::Truncate(aPoint.x, aPoint.y);
+}
+
+template <class Units, class F = Float>
+struct Point4DTyped : public BasePoint4D<F, Point4DTyped<Units, F> > {
+  static_assert(IsPixel<Units>::value,
+                "'Units' must be a coordinate system tag");
+
+  typedef BasePoint4D<F, Point4DTyped<Units, F> > Super;
+
+  Point4DTyped() : Super() {
+    static_assert(sizeof(Point4DTyped) == sizeof(F) * 4,
+                  "Would be unfortunate otherwise!");
+  }
+  Point4DTyped(F aX, F aY, F aZ, F aW) : Super(aX, aY, aZ, aW) {}
+
+  explicit Point4DTyped(const Point3DTyped<Units, F>& aPoint)
+      : Super(aPoint.x, aPoint.y, aPoint.z, 1) {}
+
+  // XXX When all of the code is ported, the following functions to convert to
+  // and from unknown types should be removed.
+
+  static Point4DTyped<Units, F> FromUnknownPoint(
+      const Point4DTyped<UnknownUnits, F>& aPoint) {
+    return Point4DTyped<Units, F>(aPoint.x, aPoint.y, aPoint.z, aPoint.w);
+  }
+
+  Point4DTyped<UnknownUnits, F> ToUnknownPoint() const {
+    return Point4DTyped<UnknownUnits, F>(this->x, this->y, this->z, this->w);
+  }
+
+  PointTyped<Units, F> As2DPoint() const {
+    return PointTyped<Units, F>(this->x / this->w, this->y / this->w);
+  }
+
+  Point3DTyped<Units, F> As3DPoint() const {
+    return Point3DTyped<Units, F>(this->x / this->w, this->y / this->w,
+                                  this->z / this->w);
+  }
+};
+typedef Point4DTyped<UnknownUnits> Point4D;
+typedef Point4DTyped<UnknownUnits, double> PointDouble4D;
+
+template <class Units>
+struct MOZ_EMPTY_BASES IntSizeTyped
+    : public BaseSize<int32_t, IntSizeTyped<Units>, IntCoordTyped<Units> >,
+      public Units {
+  static_assert(IsPixel<Units>::value,
+                "'Units' must be a coordinate system tag");
+
+  typedef IntCoordTyped<Units> Coord;
+  typedef BaseSize<int32_t, IntSizeTyped<Units>, Coord> Super;
+
+  constexpr IntSizeTyped() : Super() {
+    static_assert(sizeof(IntSizeTyped) == sizeof(int32_t) * 2,
+                  "Would be unfortunate otherwise!");
+  }
+  constexpr IntSizeTyped(Coord aWidth, Coord aHeight)
+      : Super(aWidth.value, aHeight.value) {}
+
+  static IntSizeTyped Round(float aWidth, float aHeight) {
+    return IntSizeTyped(int32_t(floorf(aWidth + 0.5)),
+                        int32_t(floorf(aHeight + 0.5)));
+  }
+
+  static IntSizeTyped Truncate(float aWidth, float aHeight) {
+    return IntSizeTyped(int32_t(aWidth), int32_t(aHeight));
+  }
+
+  static IntSizeTyped Ceil(float aWidth, float aHeight) {
+    return IntSizeTyped(int32_t(ceil(aWidth)), int32_t(ceil(aHeight)));
+  }
+
+  static IntSizeTyped Floor(float aWidth, float aHeight) {
+    return IntSizeTyped(int32_t(floorf(aWidth)), int32_t(floorf(aHeight)));
+  }
+
+  static IntSizeTyped Round(const SizeTyped<Units, float>& aSize);
+  static IntSizeTyped Ceil(const SizeTyped<Units, float>& aSize);
+  static IntSizeTyped Floor(const SizeTyped<Units, float>& aSize);
+  static IntSizeTyped Truncate(const SizeTyped<Units, float>& aSize);
+
+  IntSizeTyped TruncatedToMultiple(int32_t aMultiplier) const {
+    if (aMultiplier == 1) {
+      return *this;
+    }
+    return {RoundDownToMultiple(this->width, aMultiplier),
+            RoundDownToMultiple(this->height, aMultiplier)};
+  }
+
+  IntSizeTyped CeiledToMultiple(int32_t aMultiplier) const {
+    if (aMultiplier == 1) {
+      return *this;
+    }
+    return {RoundUpToMultiple(this->width, aMultiplier),
+            RoundUpToMultiple(this->height, aMultiplier)};
+  }
+
+  // XXX When all of the code is ported, the following functions to convert to
+  // and from unknown types should be removed.
+
+  static IntSizeTyped FromUnknownSize(const IntSizeTyped<UnknownUnits>& aSize) {
+    return IntSizeTyped(aSize.width, aSize.height);
+  }
+
+  IntSizeTyped<UnknownUnits> ToUnknownSize() const {
+    return IntSizeTyped<UnknownUnits>(this->width, this->height);
+  }
+};
+typedef IntSizeTyped<UnknownUnits> IntSize;
+typedef Maybe<IntSize> MaybeIntSize;
+
+template <class Units, class F = Float>
+struct MOZ_EMPTY_BASES SizeTyped
+    : public BaseSize<F, SizeTyped<Units, F>, CoordTyped<Units, F> >,
+      public Units {
+  static_assert(IsPixel<Units>::value,
+                "'Units' must be a coordinate system tag");
+
+  typedef CoordTyped<Units, F> Coord;
+  typedef BaseSize<F, SizeTyped<Units, F>, Coord> Super;
+
+  constexpr SizeTyped() : Super() {
+    static_assert(sizeof(SizeTyped) == sizeof(F) * 2,
+                  "Would be unfortunate otherwise!");
+  }
+  constexpr SizeTyped(Coord aWidth, Coord aHeight) : Super(aWidth, aHeight) {}
+  explicit SizeTyped(const IntSizeTyped<Units>& size)
+      : Super(F(size.width), F(size.height)) {}
+
+  // XXX When all of the code is ported, the following functions to convert to
+  // and from unknown types should be removed.
+
+  static SizeTyped<Units, F> FromUnknownSize(
+      const SizeTyped<UnknownUnits, F>& aSize) {
+    return SizeTyped<Units, F>(aSize.width, aSize.height);
+  }
+
+  SizeTyped<UnknownUnits, F> ToUnknownSize() const {
+    return SizeTyped<UnknownUnits, F>(this->width, this->height);
+  }
+};
+typedef SizeTyped<UnknownUnits> Size;
+typedef SizeTyped<UnknownUnits, double> SizeDouble;
+
+template <class Units>
+IntSizeTyped<Units> RoundedToInt(const SizeTyped<Units>& aSize) {
+  return IntSizeTyped<Units>(int32_t(floorf(aSize.width + 0.5f)),
+                             int32_t(floorf(aSize.height + 0.5f)));
+}
+
+template <typename Units>
+IntSizeTyped<Units> IntSizeTyped<Units>::Round(
+    const SizeTyped<Units, float>& aSize) {
+  return IntSizeTyped::Round(aSize.width, aSize.height);
+}
+
+template <typename Units>
+IntSizeTyped<Units> IntSizeTyped<Units>::Ceil(
+    const SizeTyped<Units, float>& aSize) {
+  return IntSizeTyped::Ceil(aSize.width, aSize.height);
+}
+
+template <typename Units>
+IntSizeTyped<Units> IntSizeTyped<Units>::Floor(
+    const SizeTyped<Units, float>& aSize) {
+  return IntSizeTyped::Floor(aSize.width, aSize.height);
+}
+
+template <typename Units>
+IntSizeTyped<Units> IntSizeTyped<Units>::Truncate(
+    const SizeTyped<Units, float>& aSize) {
+  return IntSizeTyped::Truncate(aSize.width, aSize.height);
+}
+
+}  // namespace gfx
+}  // namespace mozilla
+
+#endif /* MOZILLA_GFX_POINT_H_ */