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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/compositor/test/test_compositor_host.h"
#import <AppKit/AppKit.h>
#import <Foundation/Foundation.h>
#include <memory>
#include "base/apple/scoped_nsautorelease_pool.h"
#include "base/compiler_specific.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/stack_allocated.h"
#include "base/task/single_thread_task_runner.h"
#include "components/viz/common/surfaces/local_surface_id.h"
#include "components/viz/common/surfaces/parent_local_surface_id_allocator.h"
#include "ui/accelerated_widget_mac/accelerated_widget_mac.h"
#include "ui/compositor/compositor.h"
#include "ui/gfx/geometry/rect.h"
// AcceleratedTestView provides an NSView class that delegates drawing to a
// ui::Compositor delegate, setting up the NSOpenGLContext as required.
@interface AcceleratedTestView : NSView {
raw_ptr<ui::Compositor> _compositor;
}
// Designated initializer.
- (instancetype)init;
- (void)setCompositor:(ui::Compositor*)compositor;
@end
@implementation AcceleratedTestView
- (instancetype)init {
// The frame will be resized when reparented into the window's view hierarchy.
if ((self = [super initWithFrame:NSZeroRect])) {
self.wantsLayer = YES;
}
return self;
}
- (void)setCompositor:(ui::Compositor*)compositor {
_compositor = compositor;
}
- (void)drawRect:(NSRect)rect {
DCHECK(_compositor) << "Drawing with no compositor set.";
_compositor->ScheduleFullRedraw();
}
@end
namespace ui {
// Tests that use Objective-C memory semantics need to have a top-level
// autoreleasepool set up and initialized prior to execution and drained upon
// exit. The tests will leak otherwise.
class FoundationHost {
public:
FoundationHost(const FoundationHost&) = delete;
FoundationHost& operator=(const FoundationHost&) = delete;
protected:
FoundationHost() = default;
virtual ~FoundationHost() = default;
private:
STACK_ALLOCATED_IGNORE("https://crbug.com/1424190")
base::apple::ScopedNSAutoreleasePool pool_;
};
// Tests that use the AppKit framework need to have the NSApplication
// initialized prior to doing anything with display objects such as windows,
// views, or controls.
class AppKitHost : public FoundationHost {
public:
AppKitHost(const AppKitHost&) = delete;
AppKitHost& operator=(const AppKitHost&) = delete;
protected:
AppKitHost() { [NSApplication sharedApplication]; }
~AppKitHost() override = default;
};
class TestAcceleratedWidgetMacNSView : public AcceleratedWidgetMacNSView {
public:
explicit TestAcceleratedWidgetMacNSView(NSView* view) : view_(view) {}
TestAcceleratedWidgetMacNSView(const TestAcceleratedWidgetMacNSView&) =
delete;
TestAcceleratedWidgetMacNSView& operator=(
const TestAcceleratedWidgetMacNSView&) = delete;
virtual ~TestAcceleratedWidgetMacNSView() = default;
// AcceleratedWidgetMacNSView
void AcceleratedWidgetCALayerParamsUpdated() override {}
private:
NSView* __strong view_ [[maybe_unused]];
};
// TestCompositorHostMac provides a window surface and a coordinated compositor
// for use in the compositor unit tests.
class TestCompositorHostMac : public TestCompositorHost, public AppKitHost {
public:
TestCompositorHostMac(const gfx::Rect& bounds,
ui::ContextFactory* context_factory);
TestCompositorHostMac(const TestCompositorHostMac&) = delete;
TestCompositorHostMac& operator=(const TestCompositorHostMac&) = delete;
~TestCompositorHostMac() override;
private:
// TestCompositorHost:
void Show() override;
ui::Compositor* GetCompositor() override;
gfx::Rect bounds_;
ui::Compositor compositor_;
ui::AcceleratedWidgetMac accelerated_widget_;
std::unique_ptr<TestAcceleratedWidgetMacNSView>
test_accelerated_widget_nsview_;
NSWindow* __strong window_;
viz::ParentLocalSurfaceIdAllocator allocator_;
};
TestCompositorHostMac::TestCompositorHostMac(
const gfx::Rect& bounds,
ui::ContextFactory* context_factory)
: bounds_(bounds),
compositor_(context_factory->AllocateFrameSinkId(),
context_factory,
base::SingleThreadTaskRunner::GetCurrentDefault(),
/*enable_pixel_canvas=*/false) {}
TestCompositorHostMac::~TestCompositorHostMac() {
accelerated_widget_.ResetNSView();
// Release reference to |compositor_|. Important because the |compositor_|
// holds |this| as its delegate, so that reference must be removed here.
[window_.contentView setCompositor:nullptr];
window_.contentView = [[NSView alloc] initWithFrame:NSZeroRect];
[window_ orderOut:nil];
[window_ close];
}
void TestCompositorHostMac::Show() {
DCHECK(!window_);
window_ = [[NSWindow alloc]
initWithContentRect:NSMakeRect(bounds_.x(), bounds_.y(), bounds_.width(),
bounds_.height())
styleMask:NSWindowStyleMaskBorderless
backing:NSBackingStoreBuffered
defer:NO];
window_.releasedWhenClosed = NO;
AcceleratedTestView* view = [[AcceleratedTestView alloc] init];
test_accelerated_widget_nsview_ =
std::make_unique<TestAcceleratedWidgetMacNSView>(view);
allocator_.GenerateId();
accelerated_widget_.SetNSView(test_accelerated_widget_nsview_.get());
compositor_.SetAcceleratedWidget(accelerated_widget_.accelerated_widget());
compositor_.SetScaleAndSize(1.0f, bounds_.size(),
allocator_.GetCurrentLocalSurfaceId());
[view setCompositor:&compositor_];
window_.contentView = view;
[window_ orderFront:nil];
}
ui::Compositor* TestCompositorHostMac::GetCompositor() {
return &compositor_;
}
// static
TestCompositorHost* TestCompositorHost::Create(
const gfx::Rect& bounds,
ui::ContextFactory* context_factory) {
return new TestCompositorHostMac(bounds, context_factory);
}
} // namespace ui
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