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// Copyright 2016 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/views/mus/screen_mus.h"
// #include "components/mus/public/interfaces/window_manager_constants.mojom.h"
#include "mojo/converters/geometry/geometry_type_converters.h"
#include "mojo/shell/public/cpp/connection.h"
#include "mojo/shell/public/cpp/connector.h"
#include "ui/gfx/display_finder.h"
#include "ui/gfx/display_observer.h"
#include "ui/views/mus/screen_mus_delegate.h"
#include "ui/views/mus/window_manager_frame_values.h"
namespace mojo {
template <>
struct TypeConverter<gfx::Display, mus::mojom::DisplayPtr> {
static gfx::Display Convert(const mus::mojom::DisplayPtr& input) {
gfx::Display result(input->id, input->bounds.To<gfx::Rect>());
result.set_work_area(input->work_area.To<gfx::Rect>());
result.set_device_scale_factor(input->device_pixel_ratio);
switch (input->rotation) {
case mus::mojom::Rotation::VALUE_0:
result.set_rotation(gfx::Display::ROTATE_0);
break;
case mus::mojom::Rotation::VALUE_90:
result.set_rotation(gfx::Display::ROTATE_90);
break;
case mus::mojom::Rotation::VALUE_180:
result.set_rotation(gfx::Display::ROTATE_180);
break;
case mus::mojom::Rotation::VALUE_270:
result.set_rotation(gfx::Display::ROTATE_270);
break;
}
switch (input->touch_support) {
case mus::mojom::TouchSupport::UNKNOWN:
result.set_touch_support(gfx::Display::TOUCH_SUPPORT_UNKNOWN);
break;
case mus::mojom::TouchSupport::AVAILABLE:
result.set_touch_support(gfx::Display::TOUCH_SUPPORT_AVAILABLE);
break;
case mus::mojom::TouchSupport::UNAVAILABLE:
result.set_touch_support(gfx::Display::TOUCH_SUPPORT_UNAVAILABLE);
break;
}
return result;
}
};
template <>
struct TypeConverter<views::WindowManagerFrameValues,
mus::mojom::FrameDecorationValuesPtr> {
static views::WindowManagerFrameValues Convert(
const mus::mojom::FrameDecorationValuesPtr& input) {
views::WindowManagerFrameValues result;
result.normal_insets = input->normal_client_area_insets.To<gfx::Insets>();
result.maximized_insets =
input->maximized_client_area_insets.To<gfx::Insets>();
result.max_title_bar_button_width = input->max_title_bar_button_width;
return result;
}
};
} // namespace mojo
namespace views {
ScreenMus::ScreenMus(ScreenMusDelegate* delegate)
: delegate_(delegate),
primary_display_index_(0),
display_manager_observer_binding_(this) {}
ScreenMus::~ScreenMus() {}
void ScreenMus::Init(mojo::Connector* connector) {
gfx::Screen::SetScreenInstance(this);
connector->ConnectToInterface("mojo:mus", &display_manager_);
display_manager_->AddObserver(
display_manager_observer_binding_.CreateInterfacePtrAndBind());
// We need the set of displays before we can continue. Wait for it.
display_manager_observer_binding_.WaitForIncomingMethodCall();
// The WaitForIncomingMethodCall() should have supplied the set of Displays.
DCHECK(displays_.size());
}
int ScreenMus::FindDisplayIndexById(int64_t id) const {
for (size_t i = 0; i < displays_.size(); ++i) {
if (displays_[i].id() == id)
return static_cast<int>(i);
}
return -1;
}
void ScreenMus::ProcessDisplayChanged(const gfx::Display& changed_display,
bool is_primary) {
const int display_index = FindDisplayIndexById(changed_display.id());
if (display_index == -1) {
displays_.push_back(changed_display);
if (is_primary)
primary_display_index_ = static_cast<int>(displays_.size()) - 1;
FOR_EACH_OBSERVER(gfx::DisplayObserver, observers_,
OnDisplayAdded(changed_display));
return;
}
gfx::Display* local_display = &displays_[display_index];
uint32_t changed_values = 0;
if (is_primary && display_index != primary_display_index_) {
primary_display_index_ = display_index;
// ash::DisplayManager only notifies for the Display gaining primary, not
// the one losing it.
changed_values |= gfx::DisplayObserver::DISPLAY_METRIC_PRIMARY;
}
if (local_display->bounds() != changed_display.bounds()) {
local_display->set_bounds(changed_display.bounds());
changed_values |= gfx::DisplayObserver::DISPLAY_METRIC_BOUNDS;
}
if (local_display->work_area() != changed_display.work_area()) {
local_display->set_work_area(changed_display.work_area());
changed_values |= gfx::DisplayObserver::DISPLAY_METRIC_WORK_AREA;
}
if (local_display->rotation() != changed_display.rotation()) {
local_display->set_rotation(changed_display.rotation());
changed_values |= gfx::DisplayObserver::DISPLAY_METRIC_ROTATION;
}
if (local_display->device_scale_factor() !=
changed_display.device_scale_factor()) {
local_display->set_device_scale_factor(
changed_display.device_scale_factor());
changed_values |= gfx::DisplayObserver::DISPLAY_METRIC_DEVICE_SCALE_FACTOR;
}
FOR_EACH_OBSERVER(gfx::DisplayObserver, observers_,
OnDisplayMetricsChanged(*local_display, changed_values));
}
gfx::Point ScreenMus::GetCursorScreenPoint() {
NOTIMPLEMENTED();
return gfx::Point();
}
gfx::NativeWindow ScreenMus::GetWindowUnderCursor() {
NOTIMPLEMENTED();
return nullptr;
}
gfx::NativeWindow ScreenMus::GetWindowAtScreenPoint(const gfx::Point& point) {
NOTIMPLEMENTED();
return nullptr;
}
gfx::Display ScreenMus::GetPrimaryDisplay() const {
return displays_[primary_display_index_];
}
gfx::Display ScreenMus::GetDisplayNearestWindow(gfx::NativeView view) const {
NOTIMPLEMENTED();
return GetPrimaryDisplay();
}
gfx::Display ScreenMus::GetDisplayNearestPoint(const gfx::Point& point) const {
return *gfx::FindDisplayNearestPoint(displays_, point);
}
int ScreenMus::GetNumDisplays() const {
return static_cast<int>(displays_.size());
}
std::vector<gfx::Display> ScreenMus::GetAllDisplays() const {
return displays_;
}
gfx::Display ScreenMus::GetDisplayMatching(const gfx::Rect& match_rect) const {
const gfx::Display* match =
gfx::FindDisplayWithBiggestIntersection(displays_, match_rect);
return match ? *match : GetPrimaryDisplay();
}
void ScreenMus::AddObserver(gfx::DisplayObserver* observer) {
observers_.AddObserver(observer);
}
void ScreenMus::RemoveObserver(gfx::DisplayObserver* observer) {
observers_.RemoveObserver(observer);
}
void ScreenMus::OnDisplays(mojo::Array<mus::mojom::DisplayPtr> displays) {
// This should only be called once from Init() before any observers have been
// added.
DCHECK(displays_.empty());
displays_ = displays.To<std::vector<gfx::Display>>();
for (size_t i = 0; i < displays.size(); ++i) {
if (displays[i]->is_primary) {
primary_display_index_ = static_cast<int>(i);
// TODO(sky): Make WindowManagerFrameValues per display.
WindowManagerFrameValues frame_values =
displays[i]->frame_decoration_values.To<WindowManagerFrameValues>();
WindowManagerFrameValues::SetInstance(frame_values);
}
}
}
void ScreenMus::OnDisplaysChanged(
mojo::Array<mus::mojom::DisplayPtr> transport_displays) {
for (size_t i = 0; i < transport_displays.size(); ++i) {
const bool is_primary = transport_displays[i]->is_primary;
ProcessDisplayChanged(transport_displays[i].To<gfx::Display>(), is_primary);
if (is_primary) {
WindowManagerFrameValues frame_values =
transport_displays[i]
->frame_decoration_values.To<WindowManagerFrameValues>();
WindowManagerFrameValues::SetInstance(frame_values);
delegate_->OnWindowManagerFrameValuesChanged();
}
}
}
void ScreenMus::OnDisplayRemoved(int64_t id) {
const int index = FindDisplayIndexById(id);
DCHECK_NE(-1, index);
// Another display must become primary before the existing primary is
// removed.
DCHECK_NE(index, primary_display_index_);
const gfx::Display display = displays_[index];
FOR_EACH_OBSERVER(gfx::DisplayObserver, observers_,
OnDisplayRemoved(display));
}
} // namespace views
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