1 files changed, 282 insertions, 0 deletions
diff --git a/dom/svg/SVGRectElement.cpp b/dom/svg/SVGRectElement.cpp
new file mode 100644
index 0000000000..53bf78481c
--- /dev/null
+++ b/dom/svg/SVGRectElement.cpp
@@ -0,0 +1,282 @@
+/* -*- 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 "mozilla/dom/SVGRectElement.h"
+#include "mozilla/dom/SVGLengthBinding.h"
+#include "mozilla/dom/SVGRectElementBinding.h"
+#include "mozilla/gfx/2D.h"
+#include "mozilla/gfx/Matrix.h"
+#include "mozilla/gfx/Rect.h"
+#include "mozilla/gfx/PathHelpers.h"
+#include "nsGkAtoms.h"
+#include "SVGGeometryProperty.h"
+#include <algorithm>
+
+NS_IMPL_NS_NEW_SVG_ELEMENT(Rect)
+
+using namespace mozilla::gfx;
+
+namespace mozilla {
+namespace dom {
+
+class DOMSVGAnimatedLength;
+
+JSObject* SVGRectElement::WrapNode(JSContext* aCx,
+                                   JS::Handle<JSObject*> aGivenProto) {
+  return SVGRectElement_Binding::Wrap(aCx, this, aGivenProto);
+}
+
+SVGElement::LengthInfo SVGRectElement::sLengthInfo[6] = {
+    {nsGkAtoms::x, 0, SVGLength_Binding::SVG_LENGTHTYPE_NUMBER,
+     SVGContentUtils::X},
+    {nsGkAtoms::y, 0, SVGLength_Binding::SVG_LENGTHTYPE_NUMBER,
+     SVGContentUtils::Y},
+    {nsGkAtoms::width, 0, SVGLength_Binding::SVG_LENGTHTYPE_NUMBER,
+     SVGContentUtils::X},
+    {nsGkAtoms::height, 0, SVGLength_Binding::SVG_LENGTHTYPE_NUMBER,
+     SVGContentUtils::Y},
+    {nsGkAtoms::rx, 0, SVGLength_Binding::SVG_LENGTHTYPE_NUMBER,
+     SVGContentUtils::X},
+    {nsGkAtoms::ry, 0, SVGLength_Binding::SVG_LENGTHTYPE_NUMBER,
+     SVGContentUtils::Y}};
+
+//----------------------------------------------------------------------
+// Implementation
+
+SVGRectElement::SVGRectElement(
+    already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo)
+    : SVGRectElementBase(std::move(aNodeInfo)) {}
+
+bool SVGRectElement::IsAttributeMapped(const nsAtom* aAttribute) const {
+  return IsInLengthInfo(aAttribute, sLengthInfo) ||
+         SVGRectElementBase::IsAttributeMapped(aAttribute);
+}
+
+namespace SVGT = SVGGeometryProperty::Tags;
+
+//----------------------------------------------------------------------
+// nsINode methods
+
+NS_IMPL_ELEMENT_CLONE_WITH_INIT(SVGRectElement)
+
+//----------------------------------------------------------------------
+
+already_AddRefed<DOMSVGAnimatedLength> SVGRectElement::X() {
+  return mLengthAttributes[ATTR_X].ToDOMAnimatedLength(this);
+}
+
+already_AddRefed<DOMSVGAnimatedLength> SVGRectElement::Y() {
+  return mLengthAttributes[ATTR_Y].ToDOMAnimatedLength(this);
+}
+
+already_AddRefed<DOMSVGAnimatedLength> SVGRectElement::Width() {
+  return mLengthAttributes[ATTR_WIDTH].ToDOMAnimatedLength(this);
+}
+
+already_AddRefed<DOMSVGAnimatedLength> SVGRectElement::Height() {
+  return mLengthAttributes[ATTR_HEIGHT].ToDOMAnimatedLength(this);
+}
+
+already_AddRefed<DOMSVGAnimatedLength> SVGRectElement::Rx() {
+  return mLengthAttributes[ATTR_RX].ToDOMAnimatedLength(this);
+}
+
+already_AddRefed<DOMSVGAnimatedLength> SVGRectElement::Ry() {
+  return mLengthAttributes[ATTR_RY].ToDOMAnimatedLength(this);
+}
+
+//----------------------------------------------------------------------
+// SVGElement methods
+
+/* virtual */
+bool SVGRectElement::HasValidDimensions() const {
+  float width, height;
+
+  if (SVGGeometryProperty::ResolveAll<SVGT::Width, SVGT::Height>(this, &width,
+                                                                 &height)) {
+    return width > 0 && height > 0;
+  }
+  // This function might be called for an element in display:none subtree
+  // (e.g. SMIL animateMotion), we fall back to use SVG attributes.
+  return mLengthAttributes[ATTR_WIDTH].IsExplicitlySet() &&
+         mLengthAttributes[ATTR_WIDTH].GetAnimValInSpecifiedUnits() > 0 &&
+         mLengthAttributes[ATTR_HEIGHT].IsExplicitlySet() &&
+         mLengthAttributes[ATTR_HEIGHT].GetAnimValInSpecifiedUnits() > 0;
+}
+
+SVGElement::LengthAttributesInfo SVGRectElement::GetLengthInfo() {
+  return LengthAttributesInfo(mLengthAttributes, sLengthInfo,
+                              ArrayLength(sLengthInfo));
+}
+
+//----------------------------------------------------------------------
+// SVGGeometryElement methods
+
+bool SVGRectElement::GetGeometryBounds(Rect* aBounds,
+                                       const StrokeOptions& aStrokeOptions,
+                                       const Matrix& aToBoundsSpace,
+                                       const Matrix* aToNonScalingStrokeSpace) {
+  Rect rect;
+  Float rx, ry;
+
+  DebugOnly<bool> ok =
+      SVGGeometryProperty::ResolveAll<SVGT::X, SVGT::Y, SVGT::Width,
+                                      SVGT::Height, SVGT::Rx, SVGT::Ry>(
+          this, &rect.x, &rect.y, &rect.width, &rect.height, &rx, &ry);
+  MOZ_ASSERT(ok, "SVGGeometryProperty::ResolveAll failed");
+
+  if (rect.IsEmpty()) {
+    // Rendering of the element disabled
+    rect.SetEmpty();  // Make sure width/height are zero and not negative
+    // We still want the x/y position from 'rect'
+    *aBounds = aToBoundsSpace.TransformBounds(rect);
+    return true;
+  }
+
+  if (!aToBoundsSpace.IsRectilinear()) {
+    // We can't ignore the radii in this case if we want tight bounds
+    rx = std::max(rx, 0.0f);
+    ry = std::max(ry, 0.0f);
+
+    if (rx != 0 || ry != 0) {
+      return false;
+    }
+  }
+
+  if (aStrokeOptions.mLineWidth > 0.f) {
+    if (aToNonScalingStrokeSpace) {
+      if (aToNonScalingStrokeSpace->IsRectilinear()) {
+        MOZ_ASSERT(!aToNonScalingStrokeSpace->IsSingular());
+        rect = aToNonScalingStrokeSpace->TransformBounds(rect);
+        // Note that, in principle, an author could cause the corners of the
+        // rect to be beveled by specifying stroke-linejoin or setting
+        // stroke-miterlimit to be less than sqrt(2). In that very unlikely
+        // event the bounds that we calculate here may be too big if
+        // aToBoundsSpace is non-rectilinear. This is likely to be so rare it's
+        // not worth handling though.
+        rect.Inflate(aStrokeOptions.mLineWidth / 2.f);
+        Matrix nonScalingToBounds =
+            aToNonScalingStrokeSpace->Inverse() * aToBoundsSpace;
+        *aBounds = nonScalingToBounds.TransformBounds(rect);
+        return true;
+      }
+      return false;
+    }
+    // The "beveled" comment above applies here too
+    rect.Inflate(aStrokeOptions.mLineWidth / 2.f);
+  }
+
+  *aBounds = aToBoundsSpace.TransformBounds(rect);
+  return true;
+}
+
+void SVGRectElement::GetAsSimplePath(SimplePath* aSimplePath) {
+  float x, y, width, height, rx, ry;
+
+  DebugOnly<bool> ok =
+      SVGGeometryProperty::ResolveAll<SVGT::X, SVGT::Y, SVGT::Width,
+                                      SVGT::Height, SVGT::Rx, SVGT::Ry>(
+          this, &x, &y, &width, &height, &rx, &ry);
+  MOZ_ASSERT(ok, "SVGGeometryProperty::ResolveAll failed");
+
+  if (width <= 0 || height <= 0) {
+    aSimplePath->Reset();
+    return;
+  }
+
+  rx = std::max(rx, 0.0f);
+  ry = std::max(ry, 0.0f);
+
+  if (rx != 0 || ry != 0) {
+    aSimplePath->Reset();
+    return;
+  }
+
+  aSimplePath->SetRect(x, y, width, height);
+}
+
+already_AddRefed<Path> SVGRectElement::BuildPath(PathBuilder* aBuilder) {
+  float x, y, width, height, rx, ry;
+
+  if (!SVGGeometryProperty::ResolveAll<SVGT::X, SVGT::Y, SVGT::Width,
+                                       SVGT::Height, SVGT::Rx, SVGT::Ry>(
+          this, &x, &y, &width, &height, &rx, &ry)) {
+    // This function might be called for element in display:none subtree
+    // (e.g. getTotalLength), we fall back to use SVG attributes.
+    GetAnimatedLengthValues(&x, &y, &width, &height, &rx, &ry, nullptr);
+    // If either the 'rx' or the 'ry' attribute isn't set, then we have to
+    // set it to the value of the other:
+    bool hasRx = mLengthAttributes[ATTR_RX].IsExplicitlySet();
+    bool hasRy = mLengthAttributes[ATTR_RY].IsExplicitlySet();
+    if (hasRx && !hasRy) {
+      ry = rx;
+    } else if (hasRy && !hasRx) {
+      rx = ry;
+    }
+  }
+
+  if (width <= 0 || height <= 0) {
+    return nullptr;
+  }
+
+  rx = std::max(rx, 0.0f);
+  ry = std::max(ry, 0.0f);
+
+  if (rx == 0 && ry == 0) {
+    // Optimization for the no rounded corners case.
+    Rect r(x, y, width, height);
+    aBuilder->MoveTo(r.TopLeft());
+    aBuilder->LineTo(r.TopRight());
+    aBuilder->LineTo(r.BottomRight());
+    aBuilder->LineTo(r.BottomLeft());
+    aBuilder->Close();
+  } else {
+    // Clamp rx and ry to half the rect's width and height respectively:
+    rx = std::min(rx, width / 2);
+    ry = std::min(ry, height / 2);
+
+    RectCornerRadii radii(rx, ry);
+    AppendRoundedRectToPath(aBuilder, Rect(x, y, width, height), radii);
+  }
+
+  return aBuilder->Finish();
+}
+
+bool SVGRectElement::IsLengthChangedViaCSS(const ComputedStyle& aNewStyle,
+                                           const ComputedStyle& aOldStyle) {
+  const auto& newSVGReset = *aNewStyle.StyleSVGReset();
+  const auto& oldSVGReset = *aOldStyle.StyleSVGReset();
+  const auto& newPosition = *aNewStyle.StylePosition();
+  const auto& oldPosition = *aOldStyle.StylePosition();
+  return newSVGReset.mX != oldSVGReset.mX || newSVGReset.mY != oldSVGReset.mY ||
+         newPosition.mWidth != oldPosition.mWidth ||
+         newPosition.mHeight != oldPosition.mHeight ||
+         newSVGReset.mRx != oldSVGReset.mRx ||
+         newSVGReset.mRy != oldSVGReset.mRy;
+}
+
+nsCSSPropertyID SVGRectElement::GetCSSPropertyIdForAttrEnum(uint8_t aAttrEnum) {
+  switch (aAttrEnum) {
+    case ATTR_X:
+      return eCSSProperty_x;
+    case ATTR_Y:
+      return eCSSProperty_y;
+    case ATTR_WIDTH:
+      return eCSSProperty_width;
+    case ATTR_HEIGHT:
+      return eCSSProperty_height;
+    case ATTR_RX:
+      return eCSSProperty_rx;
+    case ATTR_RY:
+      return eCSSProperty_ry;
+    default:
+      MOZ_ASSERT_UNREACHABLE("Unknown attr enum");
+      return eCSSProperty_UNKNOWN;
+  }
+}
+
+}  // namespace dom
+}  // namespace mozilla