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// Copyright (c) 2012 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 "ash/monitor/multi_monitor_manager.h"
#include <string>
#include <vector>
#include "base/command_line.h"
#include "base/stl_util.h"
#include "base/string_split.h"
#include "ui/aura/aura_switches.h"
#include "ui/aura/env.h"
#include "ui/aura/monitor.h"
#include "ui/aura/root_window.h"
#include "ui/aura/root_window_host.h"
#include "ui/gfx/rect.h"
#include "ui/aura/window_property.h"
DECLARE_WINDOW_PROPERTY_TYPE(aura::Monitor*);
namespace ash {
namespace internal {
namespace {
aura::Monitor* Copy(aura::Monitor* m) {
aura::Monitor* monitor = new aura::Monitor;
monitor->set_bounds(m->bounds());
return monitor;
}
} // namespace
DEFINE_WINDOW_PROPERTY_KEY(aura::Monitor*, kMonitorKey, NULL);
using std::string;
using std::vector;
using aura::Monitor;
using aura::RootWindow;
using aura::Window;
MultiMonitorManager::MultiMonitorManager() {
Init();
}
MultiMonitorManager::~MultiMonitorManager() {
// All monitors must have been deleted when root windows are deleted.
DCHECK(!monitors_.size());
}
// static
void MultiMonitorManager::AddRemoveMonitor() {
MultiMonitorManager* manager = static_cast<MultiMonitorManager*>(
aura::Env::GetInstance()->monitor_manager());
manager->AddRemoveMonitorImpl();
}
void MultiMonitorManager::CycleMonitor() {
MultiMonitorManager* manager = static_cast<MultiMonitorManager*>(
aura::Env::GetInstance()->monitor_manager());
manager->CycleMonitorImpl();
}
void MultiMonitorManager::OnNativeMonitorsChanged(
const std::vector<const aura::Monitor*>& new_monitors) {
size_t min = std::min(monitors_.size(), new_monitors.size());
// For m19, we only care about 1st monitor as primary, and
// don't differentiate the rest of monitors as all secondary
// monitors have the same content.
// TODO(oshima): Fix this so that we can differentiate outputs
// and keep a content on one monitor stays on the same monitor
// when a monitor is added or removed.
for (size_t i = 0; i < min; ++i) {
Monitor* current_monitor = monitors_[i];
const Monitor* new_monitor = new_monitors[i];
if (current_monitor->bounds() != new_monitor->bounds()) {
current_monitor->set_bounds(new_monitor->bounds());
NotifyBoundsChanged(current_monitor);
}
}
if (monitors_.size() < new_monitors.size()) {
// New monitors added
for (size_t i = min; i < new_monitors.size(); ++i) {
Monitor* monitor = new Monitor();
monitor->set_bounds(new_monitors[i]->bounds());
monitors_.push_back(monitor);
NotifyMonitorAdded(monitor);
}
} else {
// Monitors are removed. We keep the monitor for the primary
// monitor (at index 0) because it needs the monitor information
// even if it doesn't exit.
while (monitors_.size() > new_monitors.size() && monitors_.size() > 1) {
Monitor* monitor = monitors_.back();
// Monitor object is deleted in OnWindowDestroying.
NotifyMonitorRemoved(monitor);
DCHECK(find(monitors_.begin(), monitors_.end(), monitor) ==
monitors_.end());
}
}
}
RootWindow* MultiMonitorManager::CreateRootWindowForMonitor(
Monitor* monitor) {
RootWindow* root_window = new RootWindow(monitor->bounds());
root_window->AddObserver(this);
root_window->AddRootWindowObserver(this);
root_window->SetProperty(kMonitorKey, monitor);
return root_window;
}
const Monitor* MultiMonitorManager::GetMonitorNearestWindow(
const Window* window) const {
if (!window) {
MultiMonitorManager* manager = const_cast<MultiMonitorManager*>(this);
return manager->GetMonitorAt(0);
}
const RootWindow* root = window->GetRootWindow();
return root ? root->GetProperty(kMonitorKey) : NULL;
}
const Monitor* MultiMonitorManager::GetMonitorNearestPoint(
const gfx::Point& point) const {
// TODO(oshima): For m19, mouse is constrained within
// the primary window.
MultiMonitorManager* manager = const_cast<MultiMonitorManager*>(this);
return manager->GetMonitorAt(0);
}
Monitor* MultiMonitorManager::GetMonitorAt(size_t index) {
return index < monitors_.size() ? monitors_[index] : NULL;
}
size_t MultiMonitorManager::GetNumMonitors() const {
return monitors_.size();
}
Monitor* MultiMonitorManager::GetMonitorNearestWindow(const Window* window) {
const MonitorManager* manager = this;
return const_cast<Monitor*>(manager->GetMonitorNearestWindow(window));
}
void MultiMonitorManager::OnRootWindowResized(const aura::RootWindow* root,
const gfx::Size& old_size) {
if (!use_fullscreen_host_window()) {
Monitor* monitor = root->GetProperty(kMonitorKey);
monitor->set_size(root->GetHostSize());
NotifyBoundsChanged(monitor);
}
}
void MultiMonitorManager::OnWindowDestroying(Window* window) {
RootWindow* root = static_cast<RootWindow*>(window);
root->RemoveObserver(this);
// Don't remove RootWindowObserver because the observer list in
// RootWindowObserver class has already been destroyed by this time.
Monitor* monitor = window->GetProperty(kMonitorKey);
monitors_.erase(std::find(monitors_.begin(), monitors_.end(), monitor));
delete monitor;
}
void MultiMonitorManager::Init() {
// TODO(oshima): Move this logic to MonitorChangeObserver.
const string size_str = CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
switches::kAuraHostWindowSize);
vector<string> parts;
base::SplitString(size_str, ',', &parts);
for (vector<string>::const_iterator iter = parts.begin();
iter != parts.end(); ++iter) {
monitors_.push_back(CreateMonitorFromSpec(*iter));
}
if (monitors_.empty())
monitors_.push_back(CreateMonitorFromSpec("" /* default */));
}
void MultiMonitorManager::AddRemoveMonitorImpl() {
std::vector<const Monitor*> new_monitors;
if (monitors_.size() > 1) {
// Remove if there is more than one monitor.
int count = monitors_.size() - 1;
for (Monitors::const_iterator iter = monitors_.begin(); count-- > 0; ++iter)
new_monitors.push_back(Copy(*iter));
} else {
// Add if there is only one monitor.
new_monitors.push_back(Copy(monitors_[0]));
aura::Monitor* extra_monitor = new Monitor;
extra_monitor->set_bounds(gfx::Rect(100, 100, 1440, 800));
new_monitors.push_back(extra_monitor);
}
if (new_monitors.size())
OnNativeMonitorsChanged(new_monitors);
STLDeleteContainerPointers(new_monitors.begin(), new_monitors.end());
}
void MultiMonitorManager::CycleMonitorImpl() {
if (monitors_.size() > 1) {
std::vector<const Monitor*> new_monitors;
for (Monitors::const_iterator iter = monitors_.begin() + 1;
iter != monitors_.end(); ++iter)
new_monitors.push_back(Copy(*iter));
new_monitors.push_back(Copy(monitors_.front()));
OnNativeMonitorsChanged(new_monitors);
STLDeleteContainerPointers(new_monitors.begin(), new_monitors.end());
}
}
} // namespace internal
} // namespace ash
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