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// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef ASH_AMBIENT_RESOURCES_AMBIENT_ANIMATION_STATIC_RESOURCES_H_
#define ASH_AMBIENT_RESOURCES_AMBIENT_ANIMATION_STATIC_RESOURCES_H_
#include <memory>
#include <string_view>
#include "ash/ash_export.h"
#include "base/containers/flat_map.h"
#include "base/memory/scoped_refptr.h"
namespace cc {
class SkottieWrapper;
} // namespace cc
namespace gfx {
class ImageSkia;
} // namespace gfx
namespace ash {
class AmbientUiSettings;
// Loads static resources for a given AmbientUiSettings. "Static" resources
// are those that are fixed for the lifetime of the animation, as opposed to
// dynamic ones that can change between animation cycles (photos from IMAX).
// All resources are only loaded one time internally, so callers are free to
// invoke these methods as many times as desired without having to worry about
// caching the output themselves.
//
// This class is not thread-safe, but it may be bound to any sequence (including
// the UI sequence). It does not do expensive blocking I/O.
class ASH_EXPORT AmbientAnimationStaticResources {
public:
// Creates an AmbientAnimationStaticResources instance that loads resources
// for the given |ui_settings|. Returns nullptr if |ui_settings| is not
// supported.
//
// If |serializable| is true, GetSkottieWrapper() will return an animation
// that can be used for out-of-process rasterization in the graphics pipeline.
// If false, resource creation is cheaper and uses less memory but cannot be
// used for OOP rasterization.
static std::unique_ptr<AmbientAnimationStaticResources> Create(
AmbientUiSettings ui_settings,
bool serializable);
virtual ~AmbientAnimationStaticResources() = default;
// Returns the Lottie animation for these settings. The returned pointer is
// never null and always points to a valid |cc::SkottieWrapper| instance. This
// method can never fail and is cheap to call multiple times (a new animation
// is not re-created every time this is called).
// TODO(esum): Add an argument where the caller specifies whether to load the
// "portrait" or "landscape" version of this animation theme.
virtual const scoped_refptr<cc::SkottieWrapper>& GetSkottieWrapper()
const = 0;
// Returns the image to use for a static asset in the animation, identified by
// the |asset_id|. The |asset_id| is a string identifier specified when the
// animation is built offline by UX and is embedded in the Lottie json file.
// Asset ids are unique within each Lottie file, but not across Lottie files.
//
// Returns an empty ImageSkia instance if the |asset_id| is unknown.
virtual gfx::ImageSkia GetStaticImageAsset(
std::string_view asset_id) const = 0;
// Returns the AmbientUiSettings that the static resources belong to.
virtual const AmbientUiSettings& GetUiSettings() const = 0;
};
} // namespace ash
#endif // ASH_AMBIENT_RESOURCES_AMBIENT_ANIMATION_STATIC_RESOURCES_H_
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