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Fix code style issues in MacOS embedder (flutter#22270)
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101 changes: 60 additions & 41 deletions
101
shell/platform/darwin/macos/framework/Source/FlutterResizeSynchronizer.h
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,59 +1,78 @@ | ||
| // Copyright 2013 The Flutter Authors. All rights reserved. | ||
| // Use of this source code is governed by a BSD-style license that can be | ||
| // found in the LICENSE file. | ||
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| #import <Cocoa/Cocoa.h> | ||
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| @class FlutterResizeSynchronizer; | ||
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| /** | ||
| * Implemented by FlutterView. | ||
| */ | ||
| @protocol FlutterResizeSynchronizerDelegate | ||
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| // Invoked on raster thread; Delegate should flush the OpenGL context | ||
| - (void)resizeSynchronizerFlush:(FlutterResizeSynchronizer*)synchronizer; | ||
| /** | ||
| * Invoked on raster thread; Delegate should flush the OpenGL context. | ||
| */ | ||
| - (void)resizeSynchronizerFlush:(nonnull FlutterResizeSynchronizer*)synchronizer; | ||
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| // Invoked on platform thread; Delegate should flip the surfaces | ||
| - (void)resizeSynchronizerCommit:(FlutterResizeSynchronizer*)synchronizer; | ||
| /** | ||
| * Invoked on platform thread; Delegate should flip the surfaces. | ||
| */ | ||
| - (void)resizeSynchronizerCommit:(nonnull FlutterResizeSynchronizer*)synchronizer; | ||
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| @end | ||
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| // Encapsulates the logic for blocking platform thread during window resize as | ||
| // well as synchronizing the raster and platform thread during commit (presenting frame) | ||
| // | ||
| // Flow during window resize | ||
| // | ||
| // 1. Platform thread calls [synchronizer beginResize:notify:] | ||
| // This will hold the platform thread until we're ready to display contents. | ||
| // 2. Raster thread calls [synchronizer shouldEnsureSurfaceForSize:] with target size | ||
| // This will return false for any size other than target size | ||
| // 3. Raster thread calls [synchronizer requestCommit] | ||
| // Any commit calls before shouldEnsureSurfaceForSize: is called with the right | ||
| // size are simply ignored; There's no point rasterizing and displaying frames | ||
| // with wrong size. | ||
| // Both delegate methods (flush/commit) will be invoked before beginResize returns | ||
| // | ||
| // Flow during regular operation (no resizing) | ||
| // | ||
| // 1. Raster thread calls [synchronizer requestCommit] | ||
| // This will invoke [delegate flush:] on raster thread and | ||
| // [delegate commit:] on platform thread. The requestCommit call will be blocked | ||
| // until this is done. This is necessary to ensure that rasterizer won't start | ||
| // rasterizing next frame before we flipped the surface, which must be performed | ||
| // on platform thread | ||
| /** | ||
| * Encapsulates the logic for blocking platform thread during window resize as | ||
| * well as synchronizing the raster and platform thread during commit (presenting frame). | ||
| * | ||
| * Flow during window resize | ||
| * | ||
| * 1. Platform thread calls [synchronizer beginResize:notify:] | ||
| * This will hold the platform thread until we're ready to display contents. | ||
| * 2. Raster thread calls [synchronizer shouldEnsureSurfaceForSize:] with target size | ||
| * This will return false for any size other than target size | ||
| * 3. Raster thread calls [synchronizer requestCommit] | ||
| * Any commit calls before shouldEnsureSurfaceForSize: is called with the right | ||
| * size are simply ignored; There's no point rasterizing and displaying frames | ||
| * with wrong size. | ||
| * Both delegate methods (flush/commit) will be invoked before beginResize returns | ||
| * | ||
| * Flow during regular operation (no resizing) | ||
| * | ||
| * 1. Raster thread calls [synchronizer requestCommit] | ||
| * This will invoke [delegate flush:] on raster thread and | ||
| * [delegate commit:] on platform thread. The requestCommit call will be blocked | ||
| * until this is done. This is necessary to ensure that rasterizer won't start | ||
| * rasterizing next frame before we flipped the surface, which must be performed | ||
| * on platform thread | ||
| */ | ||
| @interface FlutterResizeSynchronizer : NSObject | ||
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| - (instancetype)initWithDelegate:(id<FlutterResizeSynchronizerDelegate>)delegate; | ||
| - (nullable instancetype)initWithDelegate:(nonnull id<FlutterResizeSynchronizerDelegate>)delegate; | ||
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| // Blocks the platform thread until | ||
| // - shouldEnsureSurfaceForSize is called with proper size and | ||
| // - requestCommit is called | ||
| // All requestCommit calls before `shouldEnsureSurfaceForSize` is called with | ||
| // expected size are ignored; | ||
| // The notify block is invoked immediately after synchronizer mutex is acquired | ||
| - (void)beginResize:(CGSize)size notify:(dispatch_block_t)notify; | ||
| /** | ||
| * Blocks the platform thread until | ||
| * - shouldEnsureSurfaceForSize is called with proper size and | ||
| * - requestCommit is called | ||
| * All requestCommit calls before `shouldEnsureSurfaceForSize` is called with | ||
| * expected size are ignored; | ||
| * The notify block is invoked immediately after synchronizer mutex is acquired. | ||
| */ | ||
| - (void)beginResize:(CGSize)size notify:(nonnull dispatch_block_t)notify; | ||
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| // Returns whether the view should ensure surfaces with given size; | ||
| // This will be false during resizing for any size other than size specified | ||
| // during beginResize | ||
| - (bool)shouldEnsureSurfaceForSize:(CGSize)size; | ||
| /** | ||
| * Returns whether the view should ensure surfaces with given size; | ||
| * This will be false during resizing for any size other than size specified | ||
| * during beginResize. | ||
| */ | ||
| - (BOOL)shouldEnsureSurfaceForSize:(CGSize)size; | ||
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| // Called from rasterizer thread, will block until delegate resizeSynchronizerCommit: | ||
| // method is called (on platform thread) | ||
| /** | ||
| * Called from rasterizer thread, will block until delegate resizeSynchronizerCommit: | ||
| * method is called (on platform thread). | ||
| */ | ||
| - (void)requestCommit; | ||
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| @end |
114 changes: 64 additions & 50 deletions
114
shell/platform/darwin/macos/framework/Source/FlutterResizeSynchronizer.mm
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7 changes: 6 additions & 1 deletion
7
shell/platform/darwin/macos/framework/Source/FlutterSurfaceManager.h
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