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// Copyright 2011 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_TREES_LAYER_TREE_SETTINGS_H_
#define CC_TREES_LAYER_TREE_SETTINGS_H_
#include <stddef.h>
#include <vector>
#include "base/time/time.h"
#include "cc/base/cc_export.h"
#include "cc/debug/layer_tree_debug_state.h"
#include "cc/output/managed_memory_policy.h"
#include "cc/output/renderer_settings.h"
#include "cc/scheduler/scheduler_settings.h"
#include "cc/tiles/tile_manager_settings.h"
#include "third_party/skia/include/core/SkColor.h"
#include "ui/gfx/geometry/size.h"
namespace cc {
class CC_EXPORT LayerTreeSettings {
public:
LayerTreeSettings();
LayerTreeSettings(const LayerTreeSettings& other);
virtual ~LayerTreeSettings();
bool operator==(const LayerTreeSettings& other) const;
SchedulerSettings ToSchedulerSettings() const;
TileManagerSettings ToTileManagerSettings() const;
RendererSettings renderer_settings;
bool single_thread_proxy_scheduler = true;
bool main_frame_before_activation_enabled = false;
bool using_synchronous_renderer_compositor = false;
bool enable_latency_recovery = true;
bool can_use_lcd_text = true;
bool use_distance_field_text = false;
bool gpu_rasterization_forced = false;
bool async_worker_context_enabled = false;
int gpu_rasterization_msaa_sample_count = 0;
float gpu_rasterization_skewport_target_time_in_seconds = 0.2f;
bool create_low_res_tiling = false;
enum ScrollbarAnimator {
NO_ANIMATOR,
ANDROID_OVERLAY,
AURA_OVERLAY,
};
ScrollbarAnimator scrollbar_animator = NO_ANIMATOR;
base::TimeDelta scrollbar_show_delay;
base::TimeDelta scrollbar_fade_out_delay;
base::TimeDelta scrollbar_fade_out_resize_delay;
base::TimeDelta scrollbar_fade_out_duration;
base::TimeDelta scrollbar_thinning_duration;
SkColor solid_color_scrollbar_color = SK_ColorWHITE;
bool timeout_and_draw_when_animation_checkerboards = true;
bool layer_transforms_should_scale_layer_contents = false;
bool layers_always_allowed_lcd_text = false;
float minimum_contents_scale = 0.0625f;
float low_res_contents_scale_factor = 0.25f;
float top_controls_show_threshold = 0.5f;
float top_controls_hide_threshold = 0.5f;
double background_animation_rate = 1.0;
gfx::Size default_tile_size;
gfx::Size max_untiled_layer_size;
gfx::Size minimum_occlusion_tracking_size;
// 3000 pixels should give sufficient area for prepainting.
// Note this value is specified with an ideal contents scale in mind. That
// is, the ideal tiling would use this value as the padding.
// TODO(vmpstr): Figure out a better number that doesn't depend on scale.
int tiling_interest_area_padding = 3000;
float skewport_target_time_in_seconds = 1.0f;
int skewport_extrapolation_limit_in_screen_pixels = 2000;
size_t max_memory_for_prepaint_percentage = 100;
bool use_zero_copy = false;
bool use_partial_raster = false;
bool enable_elastic_overscroll = false;
bool ignore_root_layer_flings = false;
size_t scheduled_raster_task_limit = 32;
bool use_occlusion_for_tile_prioritization = false;
bool verify_clip_tree_calculations = false;
// TODO(khushalsagar): Enable for all client and remove this flag if possible.
// See crbug/com/696864.
bool image_decode_tasks_enabled = false;
bool use_layer_lists = false;
int max_staging_buffer_usage_in_bytes = 32 * 1024 * 1024;
ManagedMemoryPolicy gpu_memory_policy;
ManagedMemoryPolicy software_memory_policy;
size_t gpu_decoded_image_budget_bytes = 96 * 1024 * 1024;
size_t software_decoded_image_budget_bytes = 128 * 1024 * 1024;
int max_preraster_distance_in_screen_pixels = 1000;
bool enable_color_correct_rendering = false;
// TODO(sunxd): remove this flag when filter demoting and aa of mask layers
// are implemented.
bool enable_mask_tiling = false;
// If set to true, the compositor may selectively defer image decodes to the
// Image Decode Service and raster tiles without images until the decode is
// ready.
bool enable_checker_imaging = false;
LayerTreeDebugState initial_debug_state;
};
} // namespace cc
#endif // CC_TREES_LAYER_TREE_SETTINGS_H_
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