| // Copyright 2018 The Chromium Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef UI_VIEWS_CONTROLS_ANIMATED_IMAGE_VIEW_H_ |
| #define UI_VIEWS_CONTROLS_ANIMATED_IMAGE_VIEW_H_ |
| |
| #include <memory> |
| #include <utility> |
| |
| #include "base/memory/raw_ptr.h" |
| #include "base/time/time.h" |
| #include "third_party/abseil-cpp/absl/types/optional.h" |
| #include "ui/base/metadata/metadata_header_macros.h" |
| #include "ui/compositor/compositor_animation_observer.h" |
| #include "ui/gfx/geometry/vector2d.h" |
| #include "ui/lottie/animation.h" |
| #include "ui/views/controls/image_view_base.h" |
| #include "ui/views/metadata/view_factory.h" |
| #include "ui/views/views_export.h" |
| |
| namespace gfx { |
| class Canvas; |
| } |
| |
| namespace ui { |
| class Compositor; |
| } |
| |
| namespace views { |
| |
| ///////////////////////////////////////////////////////////////////////////// |
| // |
| // AnimatedImageView class. |
| // |
| // An AnimatedImageView can display a skia vector animation. The animation paint |
| // size can be set via SetImageSize. The animation is stopped by default. |
| // Use this over AnimatedIconView if you want to play a skottie animation file. |
| // |
| ///////////////////////////////////////////////////////////////////////////// |
| class VIEWS_EXPORT AnimatedImageView : public ImageViewBase, |
| public ui::CompositorAnimationObserver { |
| public: |
| METADATA_HEADER(AnimatedImageView); |
| |
| enum class State { |
| kPlaying, // The animation is currently playing. |
| kStopped // The animation is stopped and paint will raster the first |
| // frame. |
| }; |
| |
| AnimatedImageView(); |
| AnimatedImageView(const AnimatedImageView&) = delete; |
| AnimatedImageView& operator=(const AnimatedImageView&) = delete; |
| ~AnimatedImageView() override; |
| |
| // Set the animated image that should be displayed. Setting an animated image |
| // will result in stopping the current animation. |
| void SetAnimatedImage(std::unique_ptr<lottie::Animation> animated_image); |
| |
| // Plays the animation and must only be called when this view has |
| // access to a widget. |
| // |
| // If a null |playback_config| is provided, the default one is used. |
| void Play(absl::optional<lottie::Animation::PlaybackConfig> playback_config = |
| absl::nullopt); |
| |
| // Stops any animation and resets it to the start frame. |
| void Stop(); |
| |
| // May return null if SetAnimatedImage() has not been called. |
| lottie::Animation* animated_image() { return animated_image_.get(); } |
| |
| // Sets additional translation that will be applied to all future rendered |
| // animation frames. The term "additional" is used because the provided |
| // translation is applied on top of the translation that ImageViewBase already |
| // applies to align the animation appropriately within the view's boundaries. |
| // |
| // Note this is not the same as translating the entire View. This only |
| // translates the animation within the existing content bounds of the View. By |
| // default, there is no additional translation. |
| void SetAdditionalTranslation(gfx::Vector2d additional_translation) { |
| additional_translation_ = std::move(additional_translation); |
| } |
| |
| private: |
| // Overridden from View: |
| void OnPaint(gfx::Canvas* canvas) override; |
| void NativeViewHierarchyChanged() override; |
| void RemovedFromWidget() override; |
| |
| // Overridden from ui::CompositorAnimationObserver: |
| void OnAnimationStep(base::TimeTicks timestamp) override; |
| void OnCompositingShuttingDown(ui::Compositor* compositor) override; |
| |
| // Overridden from ImageViewBase: |
| gfx::Size GetImageSize() const override; |
| |
| void SetCompositorFromWidget(); |
| void ClearCurrentCompositor(); |
| |
| // The current state of the animation. |
| State state_ = State::kStopped; |
| |
| // The compositor associated with the widget of this view. |
| raw_ptr<ui::Compositor> compositor_ = nullptr; |
| |
| // The most recent timestamp at which a paint was scheduled for this view. |
| base::TimeTicks previous_timestamp_; |
| |
| // The underlying lottie animation. |
| std::unique_ptr<lottie::Animation> animated_image_; |
| |
| gfx::Vector2d additional_translation_; |
| }; |
| |
| BEGIN_VIEW_BUILDER(VIEWS_EXPORT, AnimatedImageView, ImageViewBase) |
| VIEW_BUILDER_PROPERTY(std::unique_ptr<lottie::Animation>, AnimatedImage) |
| VIEW_BUILDER_PROPERTY(gfx::Vector2d, AdditionalTranslation) |
| END_VIEW_BUILDER |
| |
| } // namespace views |
| |
| DEFINE_VIEW_BUILDER(VIEWS_EXPORT, AnimatedImageView) |
| |
| #endif // UI_VIEWS_CONTROLS_ANIMATED_IMAGE_VIEW_H_ |