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// Copyright 2015 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.
syntax = "proto2";
import "display_list_recording_source.proto";
import "layer_position_constraint.proto";
import "point3f.proto";
import "pointf.proto";
import "region.proto";
import "rect.proto";
import "scroll_offset.proto";
import "size.proto";
import "skxfermode.proto";
import "transform.proto";
import "vector2df.proto";
package cc.proto;
option optimize_for = LITE_RUNTIME;
// Identifies the type of cc:Layer a LayerNode represents. It is used to
// facilitate reconstruction of a Layer of the correct type on the client.
enum LayerType {
UNKNOWN = 0;
LAYER = 1;
PICTURE_LAYER = 2;
HEADS_UP_DISPLAY_LAYER = 3;
// TODO(nyquist): Add the rest of the necessary LayerTypes.
};
// Hierarchical structure for serializing the Layer tree.
message LayerNode {
// required
optional int32 id = 1;
// required
optional LayerType type = 2;
optional int32 parent_id = 3;
// A List of all the children of the current LayerNode.
repeated LayerNode children = 4;
optional LayerNode mask_layer = 5;
optional LayerNode replica_layer = 6;
}
// A container for a list of dirty layers.
message LayerUpdate {
// A list of dirty layers.
repeated LayerProperties layers = 1;
}
message LayerProperties {
// required
optional int32 id = 1;
// required
optional bool needs_push_properties = 3;
// required
optional int32 num_dependents_need_push_properties = 4;
// The properties below are only read if |needs_push_properties| is set.
// The Layer base class and each descendant have different proto messages
// for their specific properties.
optional BaseLayerProperties base = 5;
// Only one of these fields may be set per LayerProperties.
// TODO(dtrainor): use a 'oneof' union when it's supported in Chromium. See
// crbug.com/570371.
optional PictureLayerProperties picture = 6;
}
message BaseLayerProperties {
optional Point3F transform_origin = 1;
optional uint32 background_color = 2;
optional Size bounds = 3;
optional int64 transform_free_index = 4;
optional int64 effect_tree_index = 5;
optional int64 clip_tree_index = 6;
optional Vector2dF offset_to_transform_parent = 7;
optional bool double_sided = 8;
optional bool draws_content = 9;
optional bool hide_layer_and_subtree = 10;
optional bool has_render_surface = 11;
// TODO(nyquist): Add support for FilterOperation. See crbug.com/541321.
// repeated FilterOperation filters = 12;
// repeated FilterOperation background_filters = 13;
optional bool masks_to_bounds = 14;
optional uint32 main_thread_scrolling_reasons = 15;
optional bool have_wheel_event_handlers = 16;
optional bool have_scroll_event_handlers = 17;
optional Region non_fast_scrollable_region = 18;
optional Region touch_event_handler_region = 19;
optional int32 scroll_blocks_on = 20;
optional bool contents_opaque = 21;
optional float opacity = 22;
optional SkXfermode.Mode blend_mode = 23;
optional bool is_root_for_isolated_group = 24;
optional PointF position = 25;
optional bool is_container_for_fixed_position_layers = 26;
optional LayerPositionConstraint position_constraint = 27;
optional bool should_flatten_transform = 28;
optional bool should_flatten_transform_from_property_tree = 29;
optional int32 num_layer_or_descendants_with_copy_request = 30;
optional SkXfermode.Mode draw_blend_mode = 31;
optional bool use_parent_backface_visibility = 32;
optional Transform transform = 33;
optional bool transform_is_invertible = 34;
optional int32 sorting_context_id = 35;
optional int32 num_descendants_that_draw_content = 36;
optional int32 scroll_clip_layer_id = 37;
optional bool user_scrollable_horizontal = 38;
optional bool user_scrollable_vertical = 39;
optional int32 scroll_parent_id = 40;
repeated int32 scroll_children_ids = 41;
optional int32 clip_parent_id = 42;
repeated int32 clip_children_ids = 43;
optional ScrollOffset scroll_offset = 44;
optional Vector2dF scroll_compensation_adjustment = 45;
optional Rect update_rect = 46;
optional bool stacking_order_changed = 47;
// TODO(nyquist): Figure out what to do with LayerAnimationController.
// optional LayerAnimationController layer_animation_controller = 48;
// TODO(nyquist): Figure out what to do with FrameTimingRequests.
// repeated FrameTimingRequest frame_timing_requests = 49;
}
message PictureLayerProperties {
optional DisplayListRecordingSource recording_source = 1;
optional Region invalidation = 2;
optional Rect last_updated_visible_layer_rect = 3;
optional bool is_mask = 4;
optional bool nearest_neighbor = 5;
optional int64 update_source_frame_number = 6;
}
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