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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/wm/ash_native_cursor_manager.h"
#include "ash/display/cursor_window_controller.h"
#include "ash/display/window_tree_host_manager.h"
#include "ash/shell.h"
#include "base/logging.h"
#include "ui/aura/env.h"
#include "ui/aura/window_event_dispatcher.h"
#include "ui/aura/window_tree_host.h"
#include "ui/base/cursor/cursor.h"
#include "ui/base/cursor/image_cursors.h"
#include "ui/base/layout.h"
namespace ash {
namespace {
void SetCursorOnAllRootWindows(gfx::NativeCursor cursor) {
aura::Window::Windows root_windows =
Shell::GetInstance()->GetAllRootWindows();
for (aura::Window::Windows::iterator iter = root_windows.begin();
iter != root_windows.end(); ++iter)
(*iter)->GetHost()->SetCursor(cursor);
#if defined(OS_CHROMEOS)
Shell::GetInstance()
->window_tree_host_manager()
->cursor_window_controller()
->SetCursor(cursor);
#endif
}
void NotifyCursorVisibilityChange(bool visible) {
aura::Window::Windows root_windows =
Shell::GetInstance()->GetAllRootWindows();
for (aura::Window::Windows::iterator iter = root_windows.begin();
iter != root_windows.end(); ++iter)
(*iter)->GetHost()->OnCursorVisibilityChanged(visible);
#if defined(OS_CHROMEOS)
Shell::GetInstance()
->window_tree_host_manager()
->cursor_window_controller()
->SetVisibility(visible);
#endif
}
void NotifyMouseEventsEnableStateChange(bool enabled) {
aura::Window::Windows root_windows =
Shell::GetInstance()->GetAllRootWindows();
for (aura::Window::Windows::iterator iter = root_windows.begin();
iter != root_windows.end(); ++iter)
(*iter)->GetHost()->dispatcher()->OnMouseEventsEnableStateChanged(enabled);
// Mirror window never process events.
}
} // namespace
AshNativeCursorManager::AshNativeCursorManager()
: native_cursor_enabled_(true),
image_cursors_(new ui::ImageCursors) {
}
AshNativeCursorManager::~AshNativeCursorManager() {
}
void AshNativeCursorManager::SetNativeCursorEnabled(bool enabled) {
native_cursor_enabled_ = enabled;
::wm::CursorManager* cursor_manager =
Shell::GetInstance()->cursor_manager();
SetCursor(cursor_manager->GetCursor(), cursor_manager);
}
void AshNativeCursorManager::SetDisplay(
const gfx::Display& display,
::wm::NativeCursorManagerDelegate* delegate) {
DCHECK(display.is_valid());
// Use the platform's device scale factor instead of the display's, which
// might have been adjusted for the UI scale.
const float original_scale = Shell::GetInstance()->display_manager()->
GetDisplayInfo(display.id()).device_scale_factor();
#if defined(OS_CHROMEOS)
// And use the nearest resource scale factor.
const float cursor_scale = ui::GetScaleForScaleFactor(
ui::GetSupportedScaleFactor(original_scale));
#else
// TODO(oshima): crbug.com/143619
const float cursor_scale = original_scale;
#endif
if (image_cursors_->SetDisplay(display, cursor_scale))
SetCursor(delegate->GetCursor(), delegate);
#if defined(OS_CHROMEOS)
Shell::GetInstance()
->window_tree_host_manager()
->cursor_window_controller()
->SetDisplay(display);
#endif
}
void AshNativeCursorManager::SetCursor(
gfx::NativeCursor cursor,
::wm::NativeCursorManagerDelegate* delegate) {
if (native_cursor_enabled_) {
image_cursors_->SetPlatformCursor(&cursor);
} else {
gfx::NativeCursor invisible_cursor(ui::kCursorNone);
image_cursors_->SetPlatformCursor(&invisible_cursor);
if (cursor == ui::kCursorCustom) {
// Fall back to the default pointer cursor for now. (crbug.com/476078)
// TODO(oshima): support custom cursor.
cursor = ui::kCursorPointer;
} else {
cursor.SetPlatformCursor(invisible_cursor.platform());
}
}
cursor.set_device_scale_factor(image_cursors_->GetScale());
delegate->CommitCursor(cursor);
if (delegate->IsCursorVisible())
SetCursorOnAllRootWindows(cursor);
}
void AshNativeCursorManager::SetCursorSet(
ui::CursorSetType cursor_set,
::wm::NativeCursorManagerDelegate* delegate) {
image_cursors_->SetCursorSet(cursor_set);
delegate->CommitCursorSet(cursor_set);
// Sets the cursor to reflect the scale change immediately.
if (delegate->IsCursorVisible())
SetCursor(delegate->GetCursor(), delegate);
#if defined(OS_CHROMEOS)
Shell::GetInstance()
->window_tree_host_manager()
->cursor_window_controller()
->SetCursorSet(cursor_set);
#endif
}
void AshNativeCursorManager::SetVisibility(
bool visible,
::wm::NativeCursorManagerDelegate* delegate) {
delegate->CommitVisibility(visible);
if (visible) {
SetCursor(delegate->GetCursor(), delegate);
} else {
gfx::NativeCursor invisible_cursor(ui::kCursorNone);
image_cursors_->SetPlatformCursor(&invisible_cursor);
SetCursorOnAllRootWindows(invisible_cursor);
}
NotifyCursorVisibilityChange(visible);
}
void AshNativeCursorManager::SetMouseEventsEnabled(
bool enabled,
::wm::NativeCursorManagerDelegate* delegate) {
delegate->CommitMouseEventsEnabled(enabled);
if (enabled) {
aura::Env::GetInstance()->set_last_mouse_location(
disabled_cursor_location_);
} else {
disabled_cursor_location_ = aura::Env::GetInstance()->last_mouse_location();
}
SetVisibility(delegate->IsCursorVisible(), delegate);
NotifyMouseEventsEnableStateChange(enabled);
}
} // namespace ash
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