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// Copyright 2025 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CC_TILES_TILE_MANAGER_CLIENT_H_
#define CC_TILES_TILE_MANAGER_CLIENT_H_
#include <stddef.h>
#include <memory>
#include "cc/cc_export.h"
#include "cc/paint/target_color_params.h"
#include "cc/tiles/raster_tile_priority_queue.h"
#include "cc/tiles/tile_priority.h"
#include "components/viz/common/resources/shared_image_format.h"
#include "ui/gfx/display_color_spaces.h"
namespace cc {
class DisplayItemList;
class EvictionTilePriorityQueue;
class PaintImage;
class Tile;
class TilesWithResourceIterator;
class CC_EXPORT TileManagerClient {
public:
// Called when all tiles marked as required for activation are ready to draw.
virtual void NotifyReadyToActivate() = 0;
// Called when all tiles marked as required for draw are ready to draw.
virtual void NotifyReadyToDraw() = 0;
// Called when all tile tasks started by the most recent call to PrepareTiles
// are completed.
virtual void NotifyAllTileTasksCompleted() = 0;
// Called when the visible representation of a tile might have changed. Some
// examples are:
// - Tile version initialized.
// - Tile resources freed.
// - Tile marked for on-demand raster.
virtual void NotifyTileStateChanged(const Tile* tile,
bool update_damage = true) = 0;
// Given an empty raster tile priority queue, this will build a priority queue
// that will return tiles in the order in which they should be rasterized.
// Note if the queue was previously built, Reset must be called on it.
virtual std::unique_ptr<RasterTilePriorityQueue> BuildRasterQueue(
TreePriority tree_priority,
RasterTilePriorityQueue::Type type) = 0;
// Given an empty eviction tile priority queue, this will build a priority
// queue that will return tiles in the order in which they should be evicted.
// Note if the queue was previously built, Reset must be called on it.
virtual std::unique_ptr<EvictionTilePriorityQueue> BuildEvictionQueue(
TreePriority tree_priority) = 0;
// Returns an iterator over all the tiles that have a resource.
virtual std::unique_ptr<TilesWithResourceIterator>
CreateTilesWithResourceIterator() = 0;
// Informs the client that due to the currently rasterizing (or scheduled to
// be rasterized) tiles, we will be in a position that will likely require a
// draw. This can be used to preemptively start a frame.
virtual void SetIsLikelyToRequireADraw(bool is_likely_to_require_a_draw) = 0;
// Requests the color parameters in which the tiles should be rasterized.
virtual TargetColorParams GetTargetColorParams(
gfx::ContentColorUsage content_color_usage) const = 0;
// Returns the format to use for the tiles.
virtual viz::SharedImageFormat GetTileFormat() const = 0;
// Requests that a pending tree be scheduled to invalidate content on the
// pending on active tree. This is currently used when tiles that are
// rasterized with missing images need to be invalidated.
virtual void RequestImplSideInvalidationForCheckerImagedTiles() = 0;
// Returns the frame index to display for the given image on the given tree.
virtual size_t GetFrameIndexForImage(const PaintImage& paint_image,
WhichTree tree) const = 0;
// Returns the sample count to use if MSAA is enabled for a tile.
virtual int GetMSAASampleCountForRaster(
const DisplayItemList& display_list) const = 0;
// True if there is a pending tree.
virtual bool HasPendingTree() = 0;
protected:
virtual ~TileManagerClient() {}
};
} // namespace cc
#endif // CC_TILES_TILE_MANAGER_CLIENT_H_
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