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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/accelerators/accelerator_controller.h"
#include "ash/launcher/launcher.h"
#include "ash/launcher/launcher_model.h"
#include "ash/screenshot_delegate.h"
#include "ash/shell.h"
#include "ash/shell_window_ids.h"
#include "ash/wm/window_util.h"
#include "ui/aura/event.h"
#include "ui/aura/root_window.h"
#include "ui/base/accelerators/accelerator.h"
#include "ui/base/accelerators/accelerator_manager.h"
#include "ui/gfx/compositor/debug_utils.h"
#include "ui/gfx/compositor/layer_animation_sequence.h"
#include "ui/gfx/compositor/layer_animator.h"
#include "ui/gfx/compositor/screen_rotation.h"
namespace {
enum AcceleratorAction {
CYCLE_BACKWARD,
CYCLE_FORWARD,
TAKE_SCREENSHOT,
#if !defined(NDEBUG)
ROTATE_SCREEN,
PRINT_LAYER_HIERARCHY,
TOGGLE_ROOT_WINDOW_FULL_SCREEN,
#endif
};
// Accelerators handled by AcceleratorController.
struct AcceleratorData {
ui::KeyboardCode keycode;
bool shift;
bool ctrl;
bool alt;
AcceleratorAction action;
} kAcceleratorData[] = {
{ ui::VKEY_TAB, true, false, true, CYCLE_BACKWARD },
{ ui::VKEY_TAB, false, false, true, CYCLE_FORWARD },
{ ui::VKEY_F5, false, false, false, CYCLE_FORWARD },
{ ui::VKEY_F5, false, true, false, TAKE_SCREENSHOT },
{ ui::VKEY_PRINT, false, false, false, TAKE_SCREENSHOT },
#if !defined(NDEBUG)
{ ui::VKEY_HOME, false, true, false, ROTATE_SCREEN },
{ ui::VKEY_F11, false, true, false, TOGGLE_ROOT_WINDOW_FULL_SCREEN },
{ ui::VKEY_L, false, false, true, PRINT_LAYER_HIERARCHY },
#endif
};
bool HandleCycleWindow(bool forward) {
if (ash::Shell::GetInstance()->IsScreenLocked())
return false;
// Use the same order of the windows in LauncherModel to cycle windows.
ash::LauncherModel* model =
ash::Shell::GetInstance()->launcher()->model();
aura::Window* active_window = ash::GetActiveWindow();
if (!active_window) {
LOG(ERROR) << "No active window";
return false;
}
int active_index = model->ItemIndexByWindow(active_window);
if (active_index < 0) {
VLOG(2) << "Active window not found in the launcher model";
return false;
}
int next_index = (active_index + (forward ? 1 : -1) + model->item_count()) %
model->item_count();
ash::ActivateWindow(model->items()[next_index].window);
return true;
}
#if !defined(NDEBUG)
// Rotates the screen.
bool HandleRotateScreen() {
static int i = 0;
int delta = 0;
switch (i) {
case 0: delta = 90; break;
case 1: delta = 90; break;
case 2: delta = 90; break;
case 3: delta = 90; break;
case 4: delta = -90; break;
case 5: delta = -90; break;
case 6: delta = -90; break;
case 7: delta = -90; break;
case 8: delta = -90; break;
case 9: delta = 180; break;
case 10: delta = 180; break;
case 11: delta = 90; break;
case 12: delta = 180; break;
case 13: delta = 180; break;
}
i = (i + 1) % 14;
aura::RootWindow::GetInstance()->layer()->GetAnimator()->
set_preemption_strategy(ui::LayerAnimator::REPLACE_QUEUED_ANIMATIONS);
scoped_ptr<ui::LayerAnimationSequence> screen_rotation(
new ui::LayerAnimationSequence(new ui::ScreenRotation(delta)));
screen_rotation->AddObserver(aura::RootWindow::GetInstance());
aura::RootWindow::GetInstance()->layer()->GetAnimator()->StartAnimation(
screen_rotation.release());
return true;
}
bool HandleToggleRootWindowFullScreen() {
aura::RootWindow::GetInstance()->ToggleFullScreen();
return true;
}
bool HandlePrintLayerHierarchy() {
aura::RootWindow* root_window = aura::RootWindow::GetInstance();
ui::PrintLayerHierarchy(root_window->layer(),
root_window->last_mouse_location());
return true;
}
#endif
} // namespace
namespace ash {
////////////////////////////////////////////////////////////////////////////////
// AcceleratorController, public:
AcceleratorController::AcceleratorController()
: accelerator_manager_(new ui::AcceleratorManager) {
Init();
}
AcceleratorController::~AcceleratorController() {
}
void AcceleratorController::Init() {
for (size_t i = 0; i < arraysize(kAcceleratorData); ++i) {
ui::Accelerator accelerator(kAcceleratorData[i].keycode,
kAcceleratorData[i].shift,
kAcceleratorData[i].ctrl,
kAcceleratorData[i].alt);
Register(accelerator, this);
accelerators_.insert(std::make_pair(accelerator,
kAcceleratorData[i].action));
}
}
void AcceleratorController::Register(
const ui::Accelerator& accelerator,
ui::AcceleratorTarget* target) {
accelerator_manager_->Register(accelerator, target);
}
void AcceleratorController::Unregister(
const ui::Accelerator& accelerator,
ui::AcceleratorTarget* target) {
accelerator_manager_->Unregister(accelerator, target);
}
void AcceleratorController::UnregisterAll(
ui::AcceleratorTarget* target) {
accelerator_manager_->UnregisterAll(target);
}
bool AcceleratorController::Process(const ui::Accelerator& accelerator) {
return accelerator_manager_->Process(accelerator);
}
void AcceleratorController::SetScreenshotDelegate(
ScreenshotDelegate* screenshot_delegate) {
screenshot_delegate_.reset(screenshot_delegate);
}
////////////////////////////////////////////////////////////////////////////////
// AcceleratorController, ui::AcceleratorTarget implementation:
bool AcceleratorController::AcceleratorPressed(
const ui::Accelerator& accelerator) {
std::map<ui::Accelerator, int>::const_iterator it =
accelerators_.find(accelerator);
DCHECK(it != accelerators_.end());
switch (static_cast<AcceleratorAction>(it->second)) {
case CYCLE_BACKWARD:
return HandleCycleWindow(false);
case CYCLE_FORWARD:
return HandleCycleWindow(true);
case TAKE_SCREENSHOT:
if (screenshot_delegate_.get())
screenshot_delegate_->HandleTakeScreenshot();
// Return true to prevent propagation of the key event.
return true;
#if !defined(NDEBUG)
case ROTATE_SCREEN:
return HandleRotateScreen();
case TOGGLE_ROOT_WINDOW_FULL_SCREEN:
return HandleToggleRootWindowFullScreen();
case PRINT_LAYER_HIERARCHY:
return HandlePrintLayerHierarchy();
#endif
default:
NOTREACHED() << "Unhandled action " << it->second;;
}
return false;
}
bool AcceleratorController::CanHandleAccelerators() const {
return true;
}
} // namespace ash
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