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// Copyright 2013 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 "ui/app_list/views/speech_view.h"
#include "base/strings/utf_string_conversions.h"
#include "grit/ui_resources.h"
#include "grit/ui_strings.h"
#include "third_party/skia/include/core/SkPath.h"
#include "ui/app_list/app_list_model.h"
#include "ui/app_list/app_list_view_delegate.h"
#include "ui/app_list/speech_ui_model.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/base/resource/resource_bundle.h"
#include "ui/gfx/canvas.h"
#include "ui/gfx/path.h"
#include "ui/views/animation/bounds_animator.h"
#include "ui/views/background.h"
#include "ui/views/controls/button/image_button.h"
#include "ui/views/controls/image_view.h"
#include "ui/views/controls/label.h"
#include "ui/views/layout/fill_layout.h"
#include "ui/views/shadow_border.h"
namespace app_list {
namespace {
const int kShadowOffset = 1;
const int kShadowBlur = 4;
const int kSpeechViewMaxHeight = 300;
const int kMicButtonMargin = 12;
const int kTextMargin = 32;
const int kLogoMarginLeft = 30;
const int kLogoMarginTop = 28;
const int kLogoWidth = 104;
const int kLogoHeight = 36;
const int kIndicatorCenterOffsetY = -1;
const int kIndicatorRadiusMinOffset = -3;
const int kIndicatorRadiusMax = 100;
const int kIndicatorAnimationDuration = 100;
const SkColor kShadowColor = SkColorSetARGB(0.3 * 255, 0, 0, 0);
const SkColor kHintTextColor = SkColorSetRGB(119, 119, 119);
const SkColor kResultTextColor = SkColorSetRGB(178, 178, 178);
const SkColor kSoundLevelIndicatorColor = SkColorSetRGB(219, 219, 219);
class SoundLevelIndicator : public views::View {
public:
SoundLevelIndicator();
virtual ~SoundLevelIndicator();
private:
// Overridden from views::View:
virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE;
DISALLOW_COPY_AND_ASSIGN(SoundLevelIndicator);
};
SoundLevelIndicator::SoundLevelIndicator() {}
SoundLevelIndicator::~SoundLevelIndicator() {}
void SoundLevelIndicator::OnPaint(gfx::Canvas* canvas) {
SkPaint paint;
paint.setStyle(SkPaint::kFill_Style);
paint.setColor(kSoundLevelIndicatorColor);
paint.setAntiAlias(true);
canvas->DrawCircle(bounds().CenterPoint(), width() / 2, paint);
}
// MicButton is an image button with circular hit area.
class MicButton : public views::ImageButton {
public:
explicit MicButton(views::ButtonListener* listener);
virtual ~MicButton();
private:
// Overridden from views::View:
virtual bool HasHitTestMask() const OVERRIDE;
virtual void GetHitTestMaskDeprecated(views::View::HitTestSource source,
gfx::Path* mask) const OVERRIDE;
DISALLOW_COPY_AND_ASSIGN(MicButton);
};
MicButton::MicButton(views::ButtonListener* listener)
: views::ImageButton(listener) {}
MicButton::~MicButton() {}
bool MicButton::HasHitTestMask() const {
return true;
}
void MicButton::GetHitTestMaskDeprecated(views::View::HitTestSource source,
gfx::Path* mask) const {
DCHECK(mask);
// The mic button icon is a circle. |source| doesn't matter.
gfx::Rect local_bounds = GetLocalBounds();
int radius = local_bounds.width() / 2 + kIndicatorRadiusMinOffset;
gfx::Point center = local_bounds.CenterPoint();
center.set_y(center.y() + kIndicatorCenterOffsetY);
mask->addCircle(SkIntToScalar(center.x()),
SkIntToScalar(center.y()),
SkIntToScalar(radius));
}
} // namespace
// static
SpeechView::SpeechView(AppListViewDelegate* delegate)
: delegate_(delegate),
logo_(NULL) {
SetBorder(scoped_ptr<views::Border>(
new views::ShadowBorder(kShadowBlur,
kShadowColor,
kShadowOffset, // Vertical offset.
0)));
// To keep the painting order of the border and the background, this class
// actually has a single child of 'container' which has white background and
// contains all components.
views::View* container = new views::View();
container->set_background(
views::Background::CreateSolidBackground(SK_ColorWHITE));
const gfx::ImageSkia& logo_image = delegate_->GetSpeechUI()->logo();
if (!logo_image.isNull()) {
logo_ = new views::ImageView();
logo_->SetImage(&logo_image);
container->AddChildView(logo_);
}
indicator_ = new SoundLevelIndicator();
indicator_->SetVisible(false);
container->AddChildView(indicator_);
mic_button_ = new MicButton(this);
container->AddChildView(mic_button_);
// TODO(mukai): use BoundedLabel to cap 2 lines.
ui::ResourceBundle& bundle = ui::ResourceBundle::GetSharedInstance();
speech_result_ = new views::Label(
base::string16(), bundle.GetFontList(ui::ResourceBundle::LargeFont));
speech_result_->SetHorizontalAlignment(gfx::ALIGN_LEFT);
speech_result_->SetMultiLine(true);
container->AddChildView(speech_result_);
AddChildView(container);
delegate_->GetSpeechUI()->AddObserver(this);
indicator_animator_.reset(new views::BoundsAnimator(container));
indicator_animator_->SetAnimationDuration(kIndicatorAnimationDuration);
indicator_animator_->set_tween_type(gfx::Tween::LINEAR);
Reset();
}
SpeechView::~SpeechView() {
delegate_->GetSpeechUI()->RemoveObserver(this);
}
void SpeechView::Reset() {
OnSpeechRecognitionStateChanged(delegate_->GetSpeechUI()->state());
}
int SpeechView::GetIndicatorRadius(uint8 level) {
int radius_min = mic_button_->width() / 2 + kIndicatorRadiusMinOffset;
int range = kIndicatorRadiusMax - radius_min;
return level * range / kuint8max + radius_min;
}
void SpeechView::Layout() {
views::View* container = child_at(0);
container->SetBoundsRect(GetContentsBounds());
// Because container is a pure View, this class should layout its children.
const gfx::Rect contents_bounds = container->GetContentsBounds();
if (logo_)
logo_->SetBounds(kLogoMarginLeft, kLogoMarginTop, kLogoWidth, kLogoHeight);
gfx::Size mic_size = mic_button_->GetPreferredSize();
gfx::Point mic_origin(
contents_bounds.right() - kMicButtonMargin - mic_size.width(),
contents_bounds.y() + kMicButtonMargin);
mic_button_->SetBoundsRect(gfx::Rect(mic_origin, mic_size));
int speech_width = contents_bounds.width() - kTextMargin * 2;
speech_result_->SizeToFit(speech_width);
int speech_height = speech_result_->GetHeightForWidth(speech_width);
speech_result_->SetBounds(
contents_bounds.x() + kTextMargin,
contents_bounds.bottom() - kTextMargin - speech_height,
speech_width,
speech_height);
}
gfx::Size SpeechView::GetPreferredSize() const {
return gfx::Size(0, kSpeechViewMaxHeight);
}
void SpeechView::ButtonPressed(views::Button* sender, const ui::Event& event) {
delegate_->ToggleSpeechRecognition();
}
void SpeechView::OnSpeechSoundLevelChanged(uint8 level) {
if (!visible() ||
delegate_->GetSpeechUI()->state() == SPEECH_RECOGNITION_NETWORK_ERROR)
return;
gfx::Point origin = mic_button_->bounds().CenterPoint();
int radius = GetIndicatorRadius(level);
origin.Offset(-radius, -radius + kIndicatorCenterOffsetY);
gfx::Rect indicator_bounds =
gfx::Rect(origin, gfx::Size(radius * 2, radius * 2));
if (indicator_->visible()) {
indicator_animator_->AnimateViewTo(indicator_, indicator_bounds);
} else {
indicator_->SetVisible(true);
indicator_->SetBoundsRect(indicator_bounds);
}
}
void SpeechView::OnSpeechResult(const base::string16& result,
bool is_final) {
speech_result_->SetText(result);
speech_result_->SetEnabledColor(kResultTextColor);
}
void SpeechView::OnSpeechRecognitionStateChanged(
SpeechRecognitionState new_state) {
int resource_id = IDR_APP_LIST_SPEECH_MIC_OFF;
if (new_state == SPEECH_RECOGNITION_RECOGNIZING)
resource_id = IDR_APP_LIST_SPEECH_MIC_ON;
else if (new_state == SPEECH_RECOGNITION_IN_SPEECH)
resource_id = IDR_APP_LIST_SPEECH_MIC_RECORDING;
int text_resource_id = IDS_APP_LIST_SPEECH_HINT_TEXT;
if (new_state == SPEECH_RECOGNITION_NETWORK_ERROR) {
text_resource_id = IDS_APP_LIST_SPEECH_NETWORK_ERROR_HINT_TEXT;
indicator_->SetVisible(false);
}
speech_result_->SetText(l10n_util::GetStringUTF16(text_resource_id));
speech_result_->SetEnabledColor(kHintTextColor);
ui::ResourceBundle& bundle = ui::ResourceBundle::GetSharedInstance();
mic_button_->SetImage(views::Button::STATE_NORMAL,
bundle.GetImageSkiaNamed(resource_id));
}
} // namespace app_list
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