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// Copyright (c) 2011 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/launcher/tabbed_launcher_button.h"
#include <algorithm>
#include "ash/launcher/launcher_button_host.h"
#include "grit/ui_resources.h"
#include "ui/base/animation/multi_animation.h"
#include "ui/base/resource/resource_bundle.h"
#include "ui/gfx/canvas.h"
#include "ui/gfx/image/image.h"
#include "ui/gfx/insets.h"
namespace aura_shell {
namespace internal {
// The images drawn inside the background tab are drawn at this offset from
// the edge.
const int kBgImageContentInset = 12;
// Padding between each of the images.
const int kImagePadding = 8;
// Insets used in painting the background if it's rendered bigger than the size
// of the background image. See ImagePainter::CreateImagePainter for how these
// are interpreted.
const int kBgTopInset = 12;
const int kBgLeftInset = 30;
const int kBgBottomInset = 12;
const int kBgRightInset = 8;
TabbedLauncherButton::AnimationDelegateImpl::AnimationDelegateImpl(
TabbedLauncherButton* host)
: host_(host) {
}
TabbedLauncherButton::AnimationDelegateImpl::~AnimationDelegateImpl() {
}
void TabbedLauncherButton::AnimationDelegateImpl::AnimationEnded(
const ui::Animation* animation) {
AnimationProgressed(animation);
// Hide the image when the animation is done. We'll show it again the next
// time SetImages is invoked.
host_->show_image_ = false;
}
void TabbedLauncherButton::AnimationDelegateImpl::AnimationProgressed(
const ui::Animation* animation) {
if (host_->animation_->current_part_index() == 1)
host_->SchedulePaint();
}
// static
TabbedLauncherButton::ImageSet* TabbedLauncherButton::bg_image_1_ = NULL;
TabbedLauncherButton::ImageSet* TabbedLauncherButton::bg_image_2_ = NULL;
TabbedLauncherButton::ImageSet* TabbedLauncherButton::bg_image_3_ = NULL;
TabbedLauncherButton::TabbedLauncherButton(views::ButtonListener* listener,
LauncherButtonHost* host)
: views::ImageButton(listener),
host_(host),
ALLOW_THIS_IN_INITIALIZER_LIST(animation_delegate_(this)),
show_image_(true),
ALLOW_THIS_IN_INITIALIZER_LIST(hover_controller_(this)) {
if (!bg_image_1_) {
bg_image_1_ = CreateImageSet(IDR_AURA_LAUNCHER_TABBED_BROWSER_1,
IDR_AURA_LAUNCHER_TABBED_BROWSER_1_PUSHED,
IDR_AURA_LAUNCHER_TABBED_BROWSER_1_HOT);
bg_image_2_ = CreateImageSet(IDR_AURA_LAUNCHER_TABBED_BROWSER_2,
IDR_AURA_LAUNCHER_TABBED_BROWSER_2_PUSHED,
IDR_AURA_LAUNCHER_TABBED_BROWSER_2_HOT);
bg_image_3_ = CreateImageSet(IDR_AURA_LAUNCHER_TABBED_BROWSER_3,
IDR_AURA_LAUNCHER_TABBED_BROWSER_3_PUSHED,
IDR_AURA_LAUNCHER_TABBED_BROWSER_3_HOT);
}
SetImageAlignment(views::ImageButton::ALIGN_CENTER,
views::ImageButton::ALIGN_MIDDLE);
}
TabbedLauncherButton::~TabbedLauncherButton() {
}
void TabbedLauncherButton::PrepareForImageChange() {
if (!show_image_ || (animation_.get() && animation_->is_animating()))
return;
// Pause for 500ms, then ease out for 200ms.
ui::MultiAnimation::Parts animation_parts;
animation_parts.push_back(ui::MultiAnimation::Part(500, ui::Tween::ZERO));
animation_parts.push_back(ui::MultiAnimation::Part(200, ui::Tween::EASE_OUT));
animation_.reset(new ui::MultiAnimation(animation_parts));
animation_->set_continuous(false);
animation_->set_delegate(&animation_delegate_);
animation_->Start();
}
void TabbedLauncherButton::SetImages(const LauncherTabbedImages& images) {
animation_.reset();
show_image_ = true;
images_ = images;
ImageSet* set;
if (images_.size() <= 1)
set = bg_image_1_;
else if (images_.size() == 2)
set = bg_image_2_;
else
set = bg_image_3_;
SetImage(BS_NORMAL, set->normal_image);
SetImage(BS_HOT, set->hot_image);
SetImage(BS_PUSHED, set->pushed_image);
SchedulePaint();
}
void TabbedLauncherButton::OnPaint(gfx::Canvas* canvas) {
ImageButton::OnPaint(canvas);
hover_controller_.Draw(canvas, *bg_image_1_->normal_image);
if (images_.empty() || images_[0].image.empty() || !show_image_)
return;
bool save_layer = (animation_.get() && animation_->is_animating() &&
animation_->current_part_index() == 1);
if (save_layer)
canvas->SaveLayerAlpha(animation_->CurrentValueBetween(255, 0));
// Only show the first icon.
// TODO(sky): if we settle on just 1 icon, then we should simplify surrounding
// code (don't use a vector of images).
int x = (width() - images_[0].image.width()) / 2;
int y = (height() - images_[0].image.height()) / 2 + 1;
canvas->DrawBitmapInt(images_[0].image, x, y);
if (save_layer)
canvas->Restore();
}
bool TabbedLauncherButton::OnMousePressed(const views::MouseEvent& event) {
ImageButton::OnMousePressed(event);
host_->MousePressedOnButton(this, event);
hover_controller_.HideImmediately();
return true;
}
void TabbedLauncherButton::OnMouseReleased(const views::MouseEvent& event) {
host_->MouseReleasedOnButton(this, false);
ImageButton::OnMouseReleased(event);
hover_controller_.Show();
}
void TabbedLauncherButton::OnMouseCaptureLost() {
host_->MouseReleasedOnButton(this, true);
ImageButton::OnMouseCaptureLost();
hover_controller_.Hide();
}
bool TabbedLauncherButton::OnMouseDragged(const views::MouseEvent& event) {
ImageButton::OnMouseDragged(event);
host_->MouseDraggedOnButton(this, event);
return true;
}
void TabbedLauncherButton::OnMouseEntered(const views::MouseEvent& event) {
ImageButton::OnMouseEntered(event);
hover_controller_.Show();
}
void TabbedLauncherButton::OnMouseMoved(const views::MouseEvent& event) {
ImageButton::OnMouseMoved(event);
hover_controller_.SetLocation(event.location());
}
void TabbedLauncherButton::OnMouseExited(const views::MouseEvent& event) {
ImageButton::OnMouseExited(event);
hover_controller_.Hide();
}
// static
TabbedLauncherButton::ImageSet* TabbedLauncherButton::CreateImageSet(
int normal_id,
int pushed_id,
int hot_id) {
ImageSet* set = new ImageSet;
ResourceBundle& rb = ResourceBundle::GetSharedInstance();
set->normal_image = new SkBitmap(*rb.GetImageNamed(normal_id).ToSkBitmap());
set->pushed_image = new SkBitmap(*rb.GetImageNamed(pushed_id).ToSkBitmap());
set->hot_image = new SkBitmap(*rb.GetImageNamed(hot_id).ToSkBitmap());
return set;
}
} // namespace internal
} // namespace aura_shell
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