Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

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

1 files changed, 125 insertions, 0 deletions

diff --git a/dom/svg/SVGViewBoxSMILType.cpp b/dom/svg/SVGViewBoxSMILType.cpp
new file mode 100644
index 0000000000..8952308162
--- /dev/null
+++ b/dom/svg/SVGViewBoxSMILType.cpp
@@ -0,0 +1,125 @@
+/* -*- 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/. */
+
+#include "SVGViewBoxSMILType.h"
+
+#include "mozilla/SMILValue.h"
+#include "nsDebug.h"
+#include "SVGAnimatedViewBox.h"
+#include <math.h>
+
+namespace mozilla {
+
+/*static*/
+SVGViewBoxSMILType SVGViewBoxSMILType::sSingleton;
+
+void SVGViewBoxSMILType::Init(SMILValue& aValue) const {
+  MOZ_ASSERT(aValue.IsNull(), "Unexpected value type");
+
+  aValue.mU.mPtr = new SVGViewBox();
+  aValue.mType = this;
+}
+
+void SVGViewBoxSMILType::Destroy(SMILValue& aValue) const {
+  MOZ_ASSERT(aValue.mType == this, "Unexpected SMIL value");
+  delete static_cast<SVGViewBox*>(aValue.mU.mPtr);
+  aValue.mU.mPtr = nullptr;
+  aValue.mType = SMILNullType::Singleton();
+}
+
+nsresult SVGViewBoxSMILType::Assign(SMILValue& aDest,
+                                    const SMILValue& aSrc) const {
+  MOZ_ASSERT(aDest.mType == aSrc.mType, "Incompatible SMIL types");
+  MOZ_ASSERT(aDest.mType == this, "Unexpected SMIL value");
+
+  const SVGViewBox* src = static_cast<const SVGViewBox*>(aSrc.mU.mPtr);
+  SVGViewBox* dst = static_cast<SVGViewBox*>(aDest.mU.mPtr);
+  *dst = *src;
+  return NS_OK;
+}
+
+bool SVGViewBoxSMILType::IsEqual(const SMILValue& aLeft,
+                                 const SMILValue& aRight) const {
+  MOZ_ASSERT(aLeft.mType == aRight.mType, "Incompatible SMIL types");
+  MOZ_ASSERT(aLeft.mType == this, "Unexpected type for SMIL value");
+
+  const SVGViewBox* leftBox = static_cast<const SVGViewBox*>(aLeft.mU.mPtr);
+  const SVGViewBox* rightBox = static_cast<SVGViewBox*>(aRight.mU.mPtr);
+  return *leftBox == *rightBox;
+}
+
+nsresult SVGViewBoxSMILType::Add(SMILValue& aDest, const SMILValue& aValueToAdd,
+                                 uint32_t aCount) const {
+  MOZ_ASSERT(aValueToAdd.mType == aDest.mType, "Trying to add invalid types");
+  MOZ_ASSERT(aValueToAdd.mType == this, "Unexpected source type");
+
+  // See https://bugzilla.mozilla.org/show_bug.cgi?id=541884#c3 and the two
+  // comments that follow that one for arguments for and against allowing
+  // viewBox to be additive.
+
+  return NS_ERROR_FAILURE;
+}
+
+nsresult SVGViewBoxSMILType::ComputeDistance(const SMILValue& aFrom,
+                                             const SMILValue& aTo,
+                                             double& aDistance) const {
+  MOZ_ASSERT(aFrom.mType == aTo.mType, "Trying to compare different types");
+  MOZ_ASSERT(aFrom.mType == this, "Unexpected source type");
+
+  const SVGViewBox* from = static_cast<const SVGViewBox*>(aFrom.mU.mPtr);
+  const SVGViewBox* to = static_cast<const SVGViewBox*>(aTo.mU.mPtr);
+
+  if (from->none || to->none) {
+    return NS_ERROR_FAILURE;
+  }
+
+  // We use the distances between the edges rather than the difference between
+  // the x, y, width and height for the "distance". This is necessary in
+  // order for the "distance" result that we calculate to be the same for a
+  // given change in the left side as it is for an equal change in the opposite
+  // side. See https://bugzilla.mozilla.org/show_bug.cgi?id=541884#c12
+
+  float dLeft = to->x - from->x;
+  float dTop = to->y - from->y;
+  float dRight = (to->x + to->width) - (from->x + from->width);
+  float dBottom = (to->y + to->height) - (from->y + from->height);
+
+  aDistance = std::sqrt(dLeft * dLeft + dTop * dTop + dRight * dRight +
+                        dBottom * dBottom);
+
+  return NS_OK;
+}
+
+nsresult SVGViewBoxSMILType::Interpolate(const SMILValue& aStartVal,
+                                         const SMILValue& aEndVal,
+                                         double aUnitDistance,
+                                         SMILValue& aResult) const {
+  MOZ_ASSERT(aStartVal.mType == aEndVal.mType,
+             "Trying to interpolate different types");
+  MOZ_ASSERT(aStartVal.mType == this, "Unexpected types for interpolation");
+  MOZ_ASSERT(aResult.mType == this, "Unexpected result type");
+
+  const SVGViewBox* start = static_cast<const SVGViewBox*>(aStartVal.mU.mPtr);
+  const SVGViewBox* end = static_cast<const SVGViewBox*>(aEndVal.mU.mPtr);
+
+  if (start->none || end->none) {
+    return NS_ERROR_FAILURE;
+  }
+
+  SVGViewBox* current = static_cast<SVGViewBox*>(aResult.mU.mPtr);
+
+  float x = (start->x + (end->x - start->x) * aUnitDistance);
+  float y = (start->y + (end->y - start->y) * aUnitDistance);
+  float width = (start->width + (end->width - start->width) * aUnitDistance);
+  float height =
+      (start->height + (end->height - start->height) * aUnitDistance);
+
+  *current = SVGViewBox(x, y, width, height);
+
+  return NS_OK;
+}
+
+}  // namespace mozilla