Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

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

1 files changed, 76 insertions, 0 deletions

diff --git a/dom/svg/SVGMotionSMILType.h b/dom/svg/SVGMotionSMILType.h
new file mode 100644
index 0000000000..8b62641035
--- /dev/null
+++ b/dom/svg/SVGMotionSMILType.h
@@ -0,0 +1,76 @@
+/* -*- 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/. */
+
+/* implementation of SMILType for use by <animateMotion> element */
+
+#ifndef DOM_SVG_SVGMOTIONSMILTYPE_H_
+#define DOM_SVG_SVGMOTIONSMILTYPE_H_
+
+#include "mozilla/gfx/2D.h"
+#include "mozilla/Attributes.h"
+#include "mozilla/SMILType.h"
+
+namespace mozilla {
+
+class SMILValue;
+
+/**
+ * MotionRotateType: Enum to indicate the type of our "rotate" attribute.
+ */
+enum RotateType {
+  eRotateType_Explicit,    // for e.g. rotate="45"/"45deg"/"0.785rad"
+  eRotateType_Auto,        // for rotate="auto"
+  eRotateType_AutoReverse  // for rotate="auto-reverse"
+};
+
+/**
+ * SVGMotionSMILType: Implements the SMILType interface for SMIL animations
+ * from <animateMotion>.
+ *
+ * NOTE: Even though there's technically no "motion" attribute, we behave in
+ * many ways as if there were, for simplicity.
+ */
+class SVGMotionSMILType : public SMILType {
+  using Path = mozilla::gfx::Path;
+
+ public:
+  // Singleton for SMILValue objects to hold onto.
+  static SVGMotionSMILType sSingleton;
+
+ protected:
+  // SMILType Methods
+  // -------------------
+  void Init(SMILValue& aValue) const override;
+  void Destroy(SMILValue& aValue) const override;
+  nsresult Assign(SMILValue& aDest, const SMILValue& aSrc) const override;
+  bool IsEqual(const SMILValue& aLeft, const SMILValue& aRight) const override;
+  nsresult Add(SMILValue& aDest, const SMILValue& aValueToAdd,
+               uint32_t aCount) const override;
+  nsresult SandwichAdd(SMILValue& aDest,
+                       const SMILValue& aValueToAdd) const override;
+  nsresult ComputeDistance(const SMILValue& aFrom, const SMILValue& aTo,
+                           double& aDistance) const override;
+  nsresult Interpolate(const SMILValue& aStartVal, const SMILValue& aEndVal,
+                       double aUnitDistance, SMILValue& aResult) const override;
+
+ public:
+  // Used to generate a transform matrix from an <animateMotion> SMILValue.
+  static gfx::Matrix CreateMatrix(const SMILValue& aSMILVal);
+
+  // Used to generate a SMILValue for the point at the given distance along
+  // the given path.
+  static SMILValue ConstructSMILValue(Path* aPath, float aDist,
+                                      RotateType aRotateType,
+                                      float aRotateAngle);
+
+ private:
+  // Private constructor: prevent instances beyond my singleton.
+  constexpr SVGMotionSMILType() = default;
+};
+
+}  // namespace mozilla
+
+#endif  // DOM_SVG_SVGMOTIONSMILTYPE_H_