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107 lines
3.7 KiB
Plaintext
107 lines
3.7 KiB
Plaintext
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* vim: sw=2 ts=8 et :
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*/
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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include LayersSurfaces;
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include LayersMessages;
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include protocol PCompositable;
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include protocol PCompositor;
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include protocol PLayer;
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include protocol PRenderFrame;
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include protocol PTexture;
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include "mozilla/GfxMessageUtils.h";
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using struct mozilla::layers::TextureInfo from "mozilla/layers/CompositorTypes.h";
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using struct mozilla::void_t from "ipc/IPCMessageUtils.h";
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using mozilla::layers::TextureFlags from "mozilla/layers/CompositorTypes.h";
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using class mozilla::layers::APZTestData from "mozilla/layers/APZTestData.h";
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using mozilla::layers::FrameMetrics::ViewID from "FrameMetrics.h";
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/**
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* The layers protocol is spoken between thread contexts that manage
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* layer (sub)trees. The protocol comprises atomically publishing
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* layer subtrees to a "shadow" thread context (which grafts the
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* subtree into its own tree), and atomically updating a published
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* subtree. ("Atomic" in this sense is wrt painting.)
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*/
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namespace mozilla {
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namespace layers {
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union MaybeTransform {
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Matrix4x4;
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void_t;
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};
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sync protocol PLayerTransaction {
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manager PCompositor;
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manages PLayer;
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manages PCompositable;
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manages PTexture;
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child:
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async ParentAsyncMessages(AsyncParentMessageData[] aMessages);
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parent:
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async PLayer();
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async PCompositable(TextureInfo aTextureInfo);
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async PTexture(SurfaceDescriptor aSharedData, TextureFlags aTextureFlags);
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// The isFirstPaint flag can be used to indicate that this is the first update
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// for a particular document.
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sync Update(Edit[] cset, uint64_t id, TargetConfig targetConfig, bool isFirstPaint,
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bool scheduleComposite, uint32_t paintSequenceNumber,
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bool isRepeatTransaction, TimeStamp transactionStart)
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returns (EditReply[] reply);
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// We don't need to send a sync transaction if
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// no transaction operate require a swap.
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async UpdateNoSwap(Edit[] cset, uint64_t id, TargetConfig targetConfig, bool isFirstPaint,
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bool scheduleComposite, uint32_t paintSequenceNumber,
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bool isRepeatTransaction, TimeStamp transactionStart);
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// Testing APIs
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// Enter test mode, set the sample time to sampleTime, and resample
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// animations. sampleTime must not be null.
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sync SetTestSampleTime(TimeStamp sampleTime);
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// Leave test mode and resume normal compositing
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sync LeaveTestMode();
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sync GetOpacity(PLayer layer) returns (float opacity);
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// Returns the value of the transform applied to the layer by animation after
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// factoring out translation components introduced to account for the offset
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// of the corresponding frame and transform origin and after converting to CSS
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// pixels. If the layer is not transformed by animation, the return value will
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// be void_t.
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sync GetAnimationTransform(PLayer layer) returns (MaybeTransform transform);
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// The next time the layer tree is composited, add this async scroll offset in
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// CSS pixels for the given ViewID.
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// Useful for testing rendering of async scrolling.
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async SetAsyncScrollOffset(ViewID id, int32_t x, int32_t y);
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// Drop any front buffers that might be retained on the compositor
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// side.
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async ClearCachedResources();
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// Schedule a composite if one isn't already scheduled.
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async ForceComposite();
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// Get a copy of the compositor-side APZ test data instance for this
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// layers id.
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sync GetAPZTestData() returns (APZTestData data);
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async ChildAsyncMessages(AsyncChildMessageData[] aMessages);
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async __delete__();
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};
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} // namespace layers
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} // namespace mozilla
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