Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

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

1 files changed, 243 insertions, 0 deletions

diff --git a/dom/svg/SVGFilters.h b/dom/svg/SVGFilters.h
new file mode 100644
index 0000000000..5ecec2a445
--- /dev/null
+++ b/dom/svg/SVGFilters.h
@@ -0,0 +1,243 @@
+/* -*- 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 DOM_SVG_SVGFILTERS_H_
+#define DOM_SVG_SVGFILTERS_H_
+
+#include "mozilla/Attributes.h"
+#include "mozilla/dom/SVGElement.h"
+#include "FilterDescription.h"
+#include "nsImageLoadingContent.h"
+#include "SVGAnimatedLength.h"
+#include "SVGAnimatedNumber.h"
+#include "SVGAnimatedNumberPair.h"
+#include "SVGAnimatedString.h"
+
+namespace mozilla {
+class SVGFilterInstance;
+
+namespace dom {
+
+struct SVGStringInfo {
+  SVGStringInfo(const SVGAnimatedString* aString, SVGElement* aElement)
+      : mString(aString), mElement(aElement) {}
+
+  const SVGAnimatedString* mString;
+  SVGElement* mElement;
+};
+
+using SVGFEBase = SVGElement;
+
+#define NS_SVG_FE_CID                                \
+  {                                                  \
+    0x60483958, 0xd229, 0x4a77, {                    \
+      0x96, 0xb2, 0x62, 0x3e, 0x69, 0x95, 0x1e, 0x0e \
+    }                                                \
+  }
+
+/**
+ * Base class for filter primitive elements
+ * Children of those elements e.g. feMergeNode
+ * derive from SVGFEUnstyledElement instead
+ */
+class SVGFE : public SVGFEBase {
+  friend class mozilla::SVGFilterInstance;
+
+ protected:
+  using SourceSurface = mozilla::gfx::SourceSurface;
+  using Size = mozilla::gfx::Size;
+  using IntRect = mozilla::gfx::IntRect;
+  using ColorSpace = mozilla::gfx::ColorSpace;
+  using FilterPrimitiveDescription = mozilla::gfx::FilterPrimitiveDescription;
+
+  explicit SVGFE(already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo)
+      : SVGFEBase(std::move(aNodeInfo)) {}
+  virtual ~SVGFE() = default;
+
+ public:
+  using PrimitiveAttributes = mozilla::gfx::PrimitiveAttributes;
+
+  ColorSpace GetInputColorSpace(int32_t aInputIndex,
+                                ColorSpace aUnchangedInputColorSpace) {
+    return OperatesOnSRGB(aInputIndex,
+                          aUnchangedInputColorSpace == ColorSpace::SRGB)
+               ? ColorSpace::SRGB
+               : ColorSpace::LinearRGB;
+  }
+
+  // This is only called for filter primitives without inputs. For primitives
+  // with inputs, the output color model is the same as of the first input.
+  ColorSpace GetOutputColorSpace() {
+    return ProducesSRGB() ? ColorSpace::SRGB : ColorSpace::LinearRGB;
+  }
+
+  // See http://www.w3.org/TR/SVG/filters.html#FilterPrimitiveSubRegion
+  virtual bool SubregionIsUnionOfRegions() { return true; }
+
+  NS_DECLARE_STATIC_IID_ACCESSOR(NS_SVG_FE_CID)
+
+  // interfaces:
+  NS_DECL_ISUPPORTS_INHERITED
+
+  // SVGElement interface
+  nsresult Clone(mozilla::dom::NodeInfo*, nsINode** aResult) const override = 0;
+
+  bool HasValidDimensions() const override;
+
+  virtual SVGAnimatedString& GetResultImageName() = 0;
+  // Return a list of all image names used as sources. Default is to
+  // return no sources.
+  virtual void GetSourceImageNames(nsTArray<SVGStringInfo>& aSources);
+
+  virtual FilterPrimitiveDescription GetPrimitiveDescription(
+      SVGFilterInstance* aInstance, const IntRect& aFilterSubregion,
+      const nsTArray<bool>& aInputsAreTainted,
+      nsTArray<RefPtr<SourceSurface>>& aInputImages) = 0;
+
+  // returns true if changes to the attribute should cause us to
+  // repaint the filter
+  virtual bool AttributeAffectsRendering(int32_t aNameSpaceID,
+                                         nsAtom* aAttribute) const;
+
+  // Return whether this filter primitive has tainted output. A filter's
+  // output is tainted if it depends on things that the web page is not
+  // allowed to read from, e.g. the source graphic or cross-origin images.
+  // aReferencePrincipal is the node principal of the filtered frame's element.
+  virtual bool OutputIsTainted(const nsTArray<bool>& aInputsAreTainted,
+                               nsIPrincipal* aReferencePrincipal);
+
+  static nsIntRect GetMaxRect() {
+    // Try to avoid overflow errors dealing with this rect. It will
+    // be intersected with some other reasonable-sized rect eventually.
+    return nsIntRect(INT32_MIN / 2, INT32_MIN / 2, INT32_MAX, INT32_MAX);
+  }
+
+  operator nsISupports*() { return static_cast<nsIContent*>(this); }
+
+  // WebIDL
+  already_AddRefed<DOMSVGAnimatedLength> X();
+  already_AddRefed<DOMSVGAnimatedLength> Y();
+  already_AddRefed<DOMSVGAnimatedLength> Width();
+  already_AddRefed<DOMSVGAnimatedLength> Height();
+  already_AddRefed<DOMSVGAnimatedString> Result();
+
+ protected:
+  virtual bool OperatesOnSRGB(int32_t aInputIndex, bool aInputIsAlreadySRGB) {
+    return StyleIsSetToSRGB();
+  }
+
+  // Only called for filter primitives without inputs.
+  virtual bool ProducesSRGB() { return StyleIsSetToSRGB(); }
+
+  bool StyleIsSetToSRGB();
+
+  // SVGElement specializations:
+  LengthAttributesInfo GetLengthInfo() override;
+
+  Size GetKernelUnitLength(SVGFilterInstance* aInstance,
+                           SVGAnimatedNumberPair* aKernelUnitLength);
+
+  enum { ATTR_X, ATTR_Y, ATTR_WIDTH, ATTR_HEIGHT };
+  SVGAnimatedLength mLengthAttributes[4];
+  static LengthInfo sLengthInfo[4];
+};
+
+NS_DEFINE_STATIC_IID_ACCESSOR(SVGFE, NS_SVG_FE_CID)
+
+using SVGFEUnstyledElementBase = SVGElement;
+
+class SVGFEUnstyledElement : public SVGFEUnstyledElementBase {
+ protected:
+  explicit SVGFEUnstyledElement(
+      already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo)
+      : SVGFEUnstyledElementBase(std::move(aNodeInfo)) {}
+
+ public:
+  nsresult Clone(mozilla::dom::NodeInfo*, nsINode** aResult) const override = 0;
+
+  // returns true if changes to the attribute should cause us to
+  // repaint the filter
+  virtual bool AttributeAffectsRendering(int32_t aNameSpaceID,
+                                         nsAtom* aAttribute) const = 0;
+};
+
+//------------------------------------------------------------
+
+using SVGFELightingElementBase = SVGFE;
+
+class SVGFELightingElement : public SVGFELightingElementBase {
+ protected:
+  explicit SVGFELightingElement(
+      already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo)
+      : SVGFELightingElementBase(std::move(aNodeInfo)) {}
+
+  virtual ~SVGFELightingElement() = default;
+
+ public:
+  // interfaces:
+  NS_INLINE_DECL_REFCOUNTING_INHERITED(SVGFELightingElement,
+                                       SVGFELightingElementBase)
+
+  bool AttributeAffectsRendering(int32_t aNameSpaceID,
+                                 nsAtom* aAttribute) const override;
+  SVGAnimatedString& GetResultImageName() override {
+    return mStringAttributes[RESULT];
+  }
+  void GetSourceImageNames(nsTArray<SVGStringInfo>& aSources) override;
+
+ protected:
+  bool OperatesOnSRGB(int32_t aInputIndex, bool aInputIsAlreadySRGB) override {
+    return true;
+  }
+
+  NumberAttributesInfo GetNumberInfo() override;
+  NumberPairAttributesInfo GetNumberPairInfo() override;
+  StringAttributesInfo GetStringInfo() override;
+
+  mozilla::gfx::LightType ComputeLightAttributes(
+      SVGFilterInstance* aInstance, nsTArray<float>& aFloatAttributes);
+
+  bool AddLightingAttributes(
+      mozilla::gfx::DiffuseLightingAttributes* aAttributes,
+      SVGFilterInstance* aInstance);
+
+  enum {
+    SURFACE_SCALE,
+    DIFFUSE_CONSTANT,
+    SPECULAR_CONSTANT,
+    SPECULAR_EXPONENT
+  };
+  SVGAnimatedNumber mNumberAttributes[4];
+  static NumberInfo sNumberInfo[4];
+
+  enum { KERNEL_UNIT_LENGTH };
+  SVGAnimatedNumberPair mNumberPairAttributes[1];
+  static NumberPairInfo sNumberPairInfo[1];
+
+  enum { RESULT, IN1 };
+  SVGAnimatedString mStringAttributes[2];
+  static StringInfo sStringInfo[2];
+};
+
+using SVGFELightElementBase = SVGFEUnstyledElement;
+
+class SVGFELightElement : public SVGFELightElementBase {
+ protected:
+  explicit SVGFELightElement(
+      already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo)
+      : SVGFELightElementBase(std::move(aNodeInfo)) {}
+
+ public:
+  using PrimitiveAttributes = gfx::PrimitiveAttributes;
+
+  virtual mozilla::gfx::LightType ComputeLightAttributes(
+      SVGFilterInstance* aInstance, nsTArray<float>& aFloatAttributes) = 0;
+};
+
+}  // namespace dom
+}  // namespace mozilla
+
+#endif  // DOM_SVG_SVGFILTERS_H_