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/* -*- 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_FILTERNODECAPTURE_H_
#define MOZILLA_GFX_FILTERNODECAPTURE_H_
#include "2D.h"
#include "Filters.h"
#include <unordered_map>
#include <vector>
#include "mozilla/Variant.h"
namespace mozilla {
namespace gfx {
class FilterNodeCapture final : public FilterNode {
public:
MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(FilterNodeCapture, override)
explicit FilterNodeCapture(FilterType aType)
: mType{aType}, mInputsChanged{true} {}
FilterBackend GetBackendType() override { return FILTER_BACKEND_CAPTURE; }
RefPtr<FilterNode> Validate(DrawTarget* aDT);
template <typename T, typename C>
void Replace(uint32_t aIndex, const T& aValue, C& aContainer) {
// This replace function avoids generating the hash twice.
auto result = aContainer.insert({aIndex, typename C::mapped_type(aValue)});
if (!result.second) {
result.first->second = typename C::mapped_type(aValue);
}
}
void SetInput(uint32_t aIndex, SourceSurface* aSurface) override {
mInputsChanged = true;
Replace(aIndex, RefPtr<SourceSurface>(aSurface), mInputs);
}
void SetInput(uint32_t aIndex, FilterNode* aFilter) override {
mInputsChanged = true;
Replace(aIndex, RefPtr<FilterNode>(aFilter), mInputs);
}
using AttributeValue = Variant<uint32_t, Float, Point, Matrix5x4, Point3D,
Size, IntSize, DeviceColor, Rect, IntRect,
bool, std::vector<Float>, IntPoint, Matrix>;
void SetAttribute(uint32_t aIndex, uint32_t aValue) override {
Replace(aIndex, aValue, mAttributes);
}
void SetAttribute(uint32_t aIndex, Float aValue) override {
Replace(aIndex, aValue, mAttributes);
}
void SetAttribute(uint32_t aIndex, const Point& aValue) override {
Replace(aIndex, aValue, mAttributes);
}
void SetAttribute(uint32_t aIndex, const Matrix5x4& aValue) override {
Replace(aIndex, aValue, mAttributes);
}
void SetAttribute(uint32_t aIndex, const Point3D& aValue) override {
Replace(aIndex, aValue, mAttributes);
}
void SetAttribute(uint32_t aIndex, const Size& aValue) override {
Replace(aIndex, aValue, mAttributes);
}
void SetAttribute(uint32_t aIndex, const IntSize& aValue) override {
Replace(aIndex, aValue, mAttributes);
}
void SetAttribute(uint32_t aIndex, const DeviceColor& aValue) override {
Replace(aIndex, aValue, mAttributes);
}
void SetAttribute(uint32_t aIndex, const Rect& aValue) override {
Replace(aIndex, aValue, mAttributes);
}
void SetAttribute(uint32_t aIndex, const IntRect& aValue) override {
Replace(aIndex, aValue, mAttributes);
}
void SetAttribute(uint32_t aIndex, bool aValue) override {
Replace(aIndex, aValue, mAttributes);
}
virtual void SetAttribute(uint32_t aIndex, const Float* aValues,
uint32_t aSize) override;
void SetAttribute(uint32_t aIndex, const IntPoint& aValue) override {
Replace(aIndex, aValue, mAttributes);
}
void SetAttribute(uint32_t aIndex, const Matrix& aValue) override {
Replace(aIndex, aValue, mAttributes);
}
private:
FilterType mType;
RefPtr<FilterNode> mFilterNodeInternal;
// This only contains attributes that were set since the last validation.
std::unordered_map<uint32_t, AttributeValue> mAttributes;
// This always contains all inputs, so that Validate may be called on input
// filter nodes.
std::unordered_map<uint32_t,
Variant<RefPtr<SourceSurface>, RefPtr<FilterNode>>>
mInputs;
// This is true if SetInput was called since the last validation.
bool mInputsChanged;
};
} // namespace gfx
} // namespace mozilla
#endif