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- // Copyright 2018 The Chromium Authors. All rights reserved.
- // Use of this source code is governed by a BSD-style license that can be
- // found in the LICENSE file.
- #ifndef CC_PAINT_PAINT_WORKLET_INPUT_H_
- #define CC_PAINT_PAINT_WORKLET_INPUT_H_
- #include <string>
- #include <utility>
- #include <vector>
- #include "base/containers/flat_map.h"
- #include "base/memory/ref_counted.h"
- #include "cc/paint/element_id.h"
- #include "cc/paint/paint_export.h"
- #include "cc/paint/paint_image.h"
- #include "third_party/abseil-cpp/absl/types/optional.h"
- #include "third_party/skia/include/core/SkColor.h"
- #include "third_party/skia/include/core/SkRefCnt.h"
- #include "ui/gfx/geometry/size_f.h"
- namespace cc {
- class PaintOpBuffer;
- using PaintRecord = PaintOpBuffer;
- class CC_PAINT_EXPORT PaintWorkletInput
- : public base::RefCountedThreadSafe<PaintWorkletInput> {
- public:
- enum class NativePropertyType {
- kBackgroundColor,
- kClipPath,
- kInvalid,
- };
- // Uniquely identifies a property from the animation system, so that a
- // PaintWorkletInput can specify the properties it depends on to be painted
- // (and for which it must be repainted if their values change).
- //
- // PropertyKey is designed to support both native and custom properties.
- // 1. Custom properties: The same ElementId will be produced for all custom
- // properties for a given element. As such we require the custom property
- // name as an additional key to uniquely identify custom properties.
- // 2. Native properties: When fetching the current value of a native
- // property from property tree, we need the ElementId, plus knowing which
- // tree to fetch the value from, and that's why we need the
- // |native_property_type|.
- // One property key should have either |custom_property_name| or
- // |native_property_type|, and should never have both or neither.
- struct CC_PAINT_EXPORT PropertyKey {
- PropertyKey(const std::string& custom_property_name, ElementId element_id);
- PropertyKey(NativePropertyType native_property_type, ElementId element_id);
- PropertyKey(const PropertyKey&);
- ~PropertyKey();
- bool operator==(const PropertyKey& other) const;
- bool operator!=(const PropertyKey& other) const;
- bool operator<(const PropertyKey&) const;
- absl::optional<std::string> custom_property_name;
- absl::optional<NativePropertyType> native_property_type;
- ElementId element_id;
- };
- // A structure that can hold either a float or color type value, depending
- // on the type of custom property. Only one of |float_val| and |color_val|
- // should hold value at any time; if neither hold value then we should not use
- // this value.
- // This structure is needed so that PaintWorkletProxyClient::Paint can handle
- // both color and float type custom property values at the same time.
- struct CC_PAINT_EXPORT PropertyValue {
- PropertyValue();
- explicit PropertyValue(float value);
- explicit PropertyValue(SkColor4f value);
- PropertyValue(const PropertyValue&);
- ~PropertyValue();
- bool has_value() const;
- void reset();
- absl::optional<float> float_value;
- absl::optional<SkColor4f> color_value;
- };
- virtual gfx::SizeF GetSize() const = 0;
- virtual int WorkletId() const = 0;
- // Return the list of properties used as an input by this PaintWorkletInput.
- // The values for these properties must be provided when dispatching a worklet
- // job for this input.
- using PropertyKeys = std::vector<PropertyKey>;
- virtual const PropertyKeys& GetPropertyKeys() const = 0;
- virtual bool IsCSSPaintWorkletInput() const = 0;
- // True if all the animated frames are opaque. Can be false only if animated
- // frames are colors.
- virtual bool KnownToBeOpaque() const;
- protected:
- friend class base::RefCountedThreadSafe<PaintWorkletInput>;
- virtual ~PaintWorkletInput() = default;
- };
- // PaintWorkletRecordMap ties the input for a PaintWorklet (PaintWorkletInput)
- // to the painted output (a PaintRecord). It also stores the PaintImage::Id for
- // the PaintWorklet to enable efficient invalidation of dirty PaintWorklets.
- using PaintWorkletRecordMap =
- base::flat_map<scoped_refptr<const PaintWorkletInput>,
- std::pair<PaintImage::Id, sk_sp<PaintRecord>>>;
- } // namespace cc
- #endif // CC_PAINT_PAINT_WORKLET_INPUT_H_
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