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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/touch/touch_observer_hud.h"
#include "ash/shell_window_ids.h"
#include "base/stringprintf.h"
#include "base/utf_string_conversions.h"
#include "ui/aura/event.h"
#include "ui/views/background.h"
#include "ui/views/controls/label.h"
#include "ui/views/layout/box_layout.h"
#include "ui/views/widget/widget.h"
namespace ash {
namespace internal {
TouchObserverHUD::TouchObserverHUD() {
views::View* content = new views::View;
content->SetLayoutManager(new views::BoxLayout(
views::BoxLayout::kVertical, 0, 0, 0));
for (int i = 0; i < kMaxTouchPoints; ++i) {
touch_status_[i] = ui::ET_UNKNOWN;
touch_labels_[i] = new views::Label;
touch_labels_[i]->SetBackgroundColor(SkColorSetARGB(0, 255, 255, 255));
touch_labels_[i]->SetShadowColors(SK_ColorWHITE,
SK_ColorWHITE);
touch_labels_[i]->SetShadowOffset(1, 1);
touch_labels_[i]->SetVisible(false);
content->AddChildView(touch_labels_[i]);
}
widget_.reset(new views::Widget());
views::Widget::InitParams
params(views::Widget::InitParams::TYPE_WINDOW_FRAMELESS);
params.transparent = true;
params.can_activate = false;
params.bounds = gfx::Rect(content->GetPreferredSize());
params.parent = Shell::GetInstance()->GetContainer(
internal::kShellWindowId_OverlayContainer);
widget_->Init(params);
widget_->SetContentsView(content);
widget_->StackAtTop();
widget_->Show();
}
TouchObserverHUD::~TouchObserverHUD() {}
void TouchObserverHUD::UpdateTouchPointLabel(int index) {
const char* status = NULL;
switch (touch_status_[index]) {
case ui::ET_UNKNOWN:
status = " ";
break;
case ui::ET_TOUCH_PRESSED:
status = "P";
break;
case ui::ET_TOUCH_MOVED:
status = "M";
break;
case ui::ET_TOUCH_RELEASED:
status = "R";
break;
case ui::ET_TOUCH_CANCELLED:
status = "C";
break;
default:
status = "?";
break;
}
std::string string = base::StringPrintf("%2d: %s %s",
index, status, touch_positions_[index].ToString().c_str());
touch_labels_[index]->SetText(UTF8ToUTF16(string));
}
bool TouchObserverHUD::PreHandleKeyEvent(aura::Window* target,
aura::KeyEvent* event) OVERRIDE {
return false;
}
bool TouchObserverHUD::PreHandleMouseEvent(aura::Window* target,
aura::MouseEvent* event) OVERRIDE {
return false;
}
ui::TouchStatus TouchObserverHUD::PreHandleTouchEvent(
aura::Window* target,
aura::TouchEvent* event) OVERRIDE {
if (event->touch_id() >= kMaxTouchPoints)
return ui::TOUCH_STATUS_UNKNOWN;
if (event->type() != ui::ET_TOUCH_CANCELLED)
touch_positions_[event->touch_id()] = event->root_location();
touch_status_[event->touch_id()] = event->type();
touch_labels_[event->touch_id()]->SetVisible(true);
UpdateTouchPointLabel(event->touch_id());
widget_->SetSize(widget_->GetContentsView()->GetPreferredSize());
return ui::TOUCH_STATUS_UNKNOWN;
}
ui::GestureStatus TouchObserverHUD::PreHandleGestureEvent(
aura::Window* target,
aura::GestureEvent* event) OVERRIDE {
return ui::GESTURE_STATUS_UNKNOWN;
}
} // namespace internal
} // namespace ash
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