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// Copyright 2014 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 "components/view_manager/display_manager.h"
#include "base/numerics/safe_conversions.h"
#include "components/gpu/public/interfaces/gpu.mojom.h"
#include "components/surfaces/public/interfaces/quads.mojom.h"
#include "components/surfaces/public/interfaces/surfaces.mojom.h"
#include "components/view_manager/connection_manager.h"
#include "components/view_manager/server_view.h"
#include "components/view_manager/view_coordinate_conversions.h"
#include "mojo/application/public/cpp/application_connection.h"
#include "mojo/application/public/cpp/application_impl.h"
#include "mojo/converters/geometry/geometry_type_converters.h"
#include "mojo/converters/surfaces/surfaces_type_converters.h"
#include "mojo/converters/surfaces/surfaces_utils.h"
#include "mojo/converters/transform/transform_type_converters.h"
using mojo::Rect;
using mojo::Size;
namespace view_manager {
namespace {
void DrawViewTree(mojo::Pass* pass,
const ServerView* view,
const gfx::Vector2d& parent_to_root_origin_offset,
float opacity) {
if (!view->visible())
return;
const gfx::Rect absolute_bounds =
view->bounds() + parent_to_root_origin_offset;
std::vector<const ServerView*> children(view->GetChildren());
const float combined_opacity = opacity * view->opacity();
for (std::vector<const ServerView*>::reverse_iterator it = children.rbegin();
it != children.rend();
++it) {
DrawViewTree(pass, *it, absolute_bounds.OffsetFromOrigin(),
combined_opacity);
}
cc::SurfaceId node_id = view->surface_id();
auto surface_quad_state = mojo::SurfaceQuadState::New();
surface_quad_state->surface = mojo::SurfaceId::From(node_id);
gfx::Transform node_transform;
node_transform.Translate(absolute_bounds.x(), absolute_bounds.y());
const gfx::Rect bounds_at_origin(view->bounds().size());
auto surface_quad = mojo::Quad::New();
surface_quad->material = mojo::Material::MATERIAL_SURFACE_CONTENT;
surface_quad->rect = Rect::From(bounds_at_origin);
surface_quad->opaque_rect = Rect::From(bounds_at_origin);
surface_quad->visible_rect = Rect::From(bounds_at_origin);
surface_quad->needs_blending = true;
surface_quad->shared_quad_state_index =
base::saturated_cast<int32_t>(pass->shared_quad_states.size());
surface_quad->surface_quad_state = surface_quad_state.Pass();
auto sqs = mojo::CreateDefaultSQS(view->bounds().size());
sqs->blend_mode = mojo::SK_XFERMODE_kSrcOver_Mode;
sqs->opacity = combined_opacity;
sqs->content_to_target_transform = mojo::Transform::From(node_transform);
pass->quads.push_back(surface_quad.Pass());
pass->shared_quad_states.push_back(sqs.Pass());
}
} // namespace
DefaultDisplayManager::DefaultDisplayManager(
mojo::ApplicationImpl* app_impl,
const mojo::Callback<void()>& native_viewport_closed_callback)
: app_impl_(app_impl),
connection_manager_(nullptr),
draw_timer_(false, false),
frame_pending_(false),
native_viewport_closed_callback_(native_viewport_closed_callback),
weak_factory_(this) {
metrics_.size = mojo::Size::New();
metrics_.size->width = 800;
metrics_.size->height = 600;
}
void DefaultDisplayManager::Init(
ConnectionManager* connection_manager,
mojo::NativeViewportEventDispatcherPtr event_dispatcher) {
connection_manager_ = connection_manager;
app_impl_->ConnectToService("mojo:native_viewport_service",
&native_viewport_);
native_viewport_.set_error_handler(this);
native_viewport_->Create(metrics_.size->Clone(),
base::Bind(&DefaultDisplayManager::OnMetricsChanged,
weak_factory_.GetWeakPtr()));
native_viewport_->Show();
mojo::ContextProviderPtr context_provider;
native_viewport_->GetContextProvider(GetProxy(&context_provider));
mojo::DisplayFactoryPtr display_factory;
app_impl_->ConnectToService("mojo:surfaces_service", &display_factory);
display_factory->Create(context_provider.Pass(),
nullptr, // returner - we never submit resources.
GetProxy(&display_));
native_viewport_->SetEventDispatcher(event_dispatcher.Pass());
}
DefaultDisplayManager::~DefaultDisplayManager() {
}
void DefaultDisplayManager::SchedulePaint(const ServerView* view,
const gfx::Rect& bounds) {
if (!view->IsDrawn(connection_manager_->root()))
return;
const gfx::Rect root_relative_rect =
ConvertRectBetweenViews(view, connection_manager_->root(), bounds);
if (root_relative_rect.IsEmpty())
return;
dirty_rect_.Union(root_relative_rect);
WantToDraw();
}
void DefaultDisplayManager::SetViewportSize(const gfx::Size& size) {
native_viewport_->SetSize(Size::From(size));
}
const mojo::ViewportMetrics& DefaultDisplayManager::GetViewportMetrics() {
return metrics_;
}
void DefaultDisplayManager::Draw() {
gfx::Rect rect(metrics_.size->width, metrics_.size->height);
auto pass = mojo::CreateDefaultPass(1, rect);
pass->damage_rect = Rect::From(dirty_rect_);
DrawViewTree(pass.get(), connection_manager_->root(), gfx::Vector2d(), 1.0f);
auto frame = mojo::Frame::New();
frame->passes.push_back(pass.Pass());
frame->resources.resize(0u);
frame_pending_ = true;
display_->SubmitFrame(
frame.Pass(),
base::Bind(&DefaultDisplayManager::DidDraw, base::Unretained(this)));
dirty_rect_ = gfx::Rect();
}
void DefaultDisplayManager::DidDraw() {
frame_pending_ = false;
if (!dirty_rect_.IsEmpty())
WantToDraw();
}
void DefaultDisplayManager::WantToDraw() {
if (draw_timer_.IsRunning() || frame_pending_)
return;
draw_timer_.Start(
FROM_HERE, base::TimeDelta(),
base::Bind(&DefaultDisplayManager::Draw, base::Unretained(this)));
}
void DefaultDisplayManager::OnMetricsChanged(mojo::ViewportMetricsPtr metrics) {
metrics_.size = metrics->size.Clone();
metrics_.device_pixel_ratio = metrics->device_pixel_ratio;
gfx::Rect bounds(metrics_.size.To<gfx::Size>());
connection_manager_->root()->SetBounds(bounds);
connection_manager_->ProcessViewportMetricsChanged(metrics_, *metrics);
native_viewport_->RequestMetrics(base::Bind(
&DefaultDisplayManager::OnMetricsChanged, weak_factory_.GetWeakPtr()));
}
void DefaultDisplayManager::OnConnectionError() {
// This is called when the native_viewport is torn down before
// ~DefaultDisplayManager may be called.
native_viewport_closed_callback_.Run();
}
} // namespace view_manager
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