| // Copyright 2018 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. |
| |
| #include "ui/accelerated_widget_mac/display_ca_layer_tree.h" |
| |
| #import <Cocoa/Cocoa.h> |
| #include <IOSurface/IOSurface.h> |
| |
| #include "base/debug/dump_without_crashing.h" |
| #include "base/mac/mac_util.h" |
| #include "base/mac/scoped_cftyperef.h" |
| #include "base/mac/sdk_forward_declarations.h" |
| #include "base/trace_event/trace_event.h" |
| #include "ui/base/cocoa/animation_utils.h" |
| #include "ui/base/cocoa/remote_layer_api.h" |
| #include "ui/gfx/geometry/dip_util.h" |
| |
| @interface CALayer (PrivateAPI) |
| - (void)setContentsChanged; |
| @end |
| |
| namespace ui { |
| namespace { |
| |
| // The maximum number of times to dump before throttling (to avoid sending |
| // thousands of crash dumps). |
| const int kMaxCrashDumps = 10; |
| |
| } // namespace |
| |
| DisplayCALayerTree::DisplayCALayerTree(CALayer* root_layer) |
| : root_layer_([root_layer retain]) { |
| // Disable the fade-in animation as the layers are added. |
| ScopedCAActionDisabler disabler; |
| |
| // Add a flipped transparent layer as a child, so that we don't need to |
| // fiddle with the position of sub-layers -- they will always be at the |
| // origin. |
| flipped_layer_.reset([[CALayer alloc] init]); |
| [flipped_layer_ setGeometryFlipped:YES]; |
| [flipped_layer_ setAnchorPoint:CGPointMake(0, 0)]; |
| [flipped_layer_ |
| setAutoresizingMask:kCALayerWidthSizable | kCALayerHeightSizable]; |
| [root_layer_ addSublayer:flipped_layer_]; |
| } |
| |
| DisplayCALayerTree::~DisplayCALayerTree() { |
| // Disable the fade-out animation as the view is removed. |
| ScopedCAActionDisabler disabler; |
| |
| [flipped_layer_ removeFromSuperlayer]; |
| [remote_layer_ removeFromSuperlayer]; |
| [io_surface_layer_ removeFromSuperlayer]; |
| remote_layer_.reset(); |
| io_surface_layer_.reset(); |
| } |
| |
| void DisplayCALayerTree::UpdateCALayerTree( |
| const gfx::CALayerParams& ca_layer_params) { |
| // Remote layers are the most common case. |
| if (ca_layer_params.ca_context_id) { |
| GotCALayerFrame(ca_layer_params.ca_context_id); |
| return; |
| } |
| |
| // IOSurfaces can be sent from software compositing, or if remote layers are |
| // manually disabled. |
| if (ca_layer_params.io_surface_mach_port) { |
| base::ScopedCFTypeRef<IOSurfaceRef> io_surface( |
| IOSurfaceLookupFromMachPort(ca_layer_params.io_surface_mach_port)); |
| if (io_surface) { |
| GotIOSurfaceFrame(io_surface, ca_layer_params.pixel_size, |
| ca_layer_params.scale_factor); |
| return; |
| } |
| LOG(ERROR) << "Unable to open IOSurface for frame."; |
| static int dump_counter = kMaxCrashDumps; |
| if (dump_counter) { |
| dump_counter -= 1; |
| base::debug::DumpWithoutCrashing(); |
| } |
| } |
| |
| // Warn if the frame specified neither. |
| if (ca_layer_params.io_surface_mach_port && !ca_layer_params.ca_context_id) |
| LOG(ERROR) << "Frame had neither valid CAContext nor valid IOSurface."; |
| |
| // If there was an error or if the frame specified nothing, then clear all |
| // contents. |
| if (io_surface_layer_ || remote_layer_) { |
| ScopedCAActionDisabler disabler; |
| [io_surface_layer_ removeFromSuperlayer]; |
| io_surface_layer_.reset(); |
| [remote_layer_ removeFromSuperlayer]; |
| remote_layer_.reset(); |
| } |
| } |
| |
| void DisplayCALayerTree::GotCALayerFrame(uint32_t ca_context_id) { |
| // Early-out if the remote layer has not changed. |
| if ([remote_layer_ contextId] == ca_context_id) |
| return; |
| |
| TRACE_EVENT0("ui", "DisplayCALayerTree::GotCAContextFrame"); |
| ScopedCAActionDisabler disabler; |
| |
| // Create the new CALayerHost. |
| base::scoped_nsobject<CALayerHost> new_remote_layer( |
| [[CALayerHost alloc] init]); |
| [new_remote_layer setContextId:ca_context_id]; |
| [new_remote_layer |
| setAutoresizingMask:kCALayerMaxXMargin | kCALayerMaxYMargin]; |
| |
| // Update the local CALayer tree. |
| [flipped_layer_ addSublayer:new_remote_layer]; |
| [remote_layer_ removeFromSuperlayer]; |
| remote_layer_ = new_remote_layer; |
| |
| // Ensure that the IOSurface layer be removed. |
| if (io_surface_layer_) { |
| [io_surface_layer_ removeFromSuperlayer]; |
| io_surface_layer_.reset(); |
| } |
| } |
| |
| void DisplayCALayerTree::GotIOSurfaceFrame( |
| base::ScopedCFTypeRef<IOSurfaceRef> io_surface, |
| const gfx::Size& pixel_size, |
| float scale_factor) { |
| DCHECK(io_surface); |
| TRACE_EVENT0("ui", "DisplayCALayerTree::GotIOSurfaceFrame"); |
| ScopedCAActionDisabler disabler; |
| |
| // Create (if needed) and update the IOSurface layer with new content. |
| if (!io_surface_layer_) { |
| io_surface_layer_.reset([[CALayer alloc] init]); |
| [io_surface_layer_ setContentsGravity:kCAGravityTopLeft]; |
| [io_surface_layer_ setAnchorPoint:CGPointMake(0, 0)]; |
| [flipped_layer_ addSublayer:io_surface_layer_]; |
| } |
| id new_contents = static_cast<id>(io_surface.get()); |
| if (new_contents && new_contents == [io_surface_layer_ contents]) |
| [io_surface_layer_ setContentsChanged]; |
| else |
| [io_surface_layer_ setContents:new_contents]; |
| gfx::Size bounds_dip = gfx::ConvertSizeToDIP(scale_factor, pixel_size); |
| [io_surface_layer_ |
| setBounds:CGRectMake(0, 0, bounds_dip.width(), bounds_dip.height())]; |
| if ([io_surface_layer_ contentsScale] != scale_factor) |
| [io_surface_layer_ setContentsScale:scale_factor]; |
| |
| // Ensure that the remote layer be removed. |
| if (remote_layer_) { |
| [remote_layer_ removeFromSuperlayer]; |
| remote_layer_.reset(); |
| } |
| } |
| |
| } // namespace ui |