// 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 "chrome/browser/ui/views/tabs/tab.h"
#include <limits>
#include "base/command_line.h"
#include "base/debug/alias.h"
#include "base/strings/utf_string_conversions.h"
#include "chrome/browser/defaults.h"
#include "chrome/browser/themes/theme_properties.h"
#include "chrome/browser/ui/browser.h"
#include "chrome/browser/ui/tab_contents/core_tab_helper.h"
#include "chrome/browser/ui/tabs/tab_resources.h"
#include "chrome/browser/ui/tabs/tab_utils.h"
#include "chrome/browser/ui/view_ids.h"
#include "chrome/browser/ui/views/tabs/media_indicator_button.h"
#include "chrome/browser/ui/views/tabs/tab_controller.h"
#include "chrome/browser/ui/views/theme_image_mapper.h"
#include "chrome/browser/ui/views/touch_uma/touch_uma.h"
#include "chrome/common/chrome_switches.h"
#include "chrome/grit/generated_resources.h"
#include "content/public/browser/user_metrics.h"
#include "grit/theme_resources.h"
#include "third_party/skia/include/effects/SkGradientShader.h"
#include "ui/accessibility/ax_view_state.h"
#include "ui/aura/env.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/base/models/list_selection_model.h"
#include "ui/base/resource/resource_bundle.h"
#include "ui/base/theme_provider.h"
#include "ui/gfx/animation/animation_container.h"
#include "ui/gfx/animation/multi_animation.h"
#include "ui/gfx/animation/throb_animation.h"
#include "ui/gfx/canvas.h"
#include "ui/gfx/color_analysis.h"
#include "ui/gfx/favicon_size.h"
#include "ui/gfx/image/image_skia_operations.h"
#include "ui/gfx/path.h"
#include "ui/gfx/rect_conversions.h"
#include "ui/gfx/skia_util.h"
#include "ui/resources/grit/ui_resources.h"
#include "ui/views/border.h"
#include "ui/views/controls/button/image_button.h"
#include "ui/views/controls/label.h"
#include "ui/views/rect_based_targeting_utils.h"
#include "ui/views/view_targeter.h"
#include "ui/views/widget/tooltip_manager.h"
#include "ui/views/widget/widget.h"
#include "ui/views/window/non_client_view.h"
using base::UserMetricsAction;
namespace {
// Padding around the "content" of a tab, occupied by the tab border graphics.
const int kLeftPadding = 22;
const int kTopPadding = 4;
const int kRightPadding = 17;
const int kBottomPadding = 2;
// Height of the shadow at the top of the tab image assets.
const int kDropShadowHeight = 4;
// How long the pulse throb takes.
const int kPulseDurationMs = 200;
// Width of touch tabs.
static const int kTouchWidth = 120;
static const int kToolbarOverlap = 1;
static const int kFaviconTitleSpacing = 4;
static const int kViewSpacing = 3;
static const int kStandardTitleWidth = 175;
// When a non-mini-tab becomes a mini-tab the width of the tab animates. If
// the width of a mini-tab is >= kMiniTabRendererAsNormalTabWidth then the tab
// is rendered as a normal tab. This is done to avoid having the title
// immediately disappear when transitioning a tab from normal to mini-tab.
static const int kMiniTabRendererAsNormalTabWidth =
browser_defaults::kMiniTabWidth + 30;
// How opaque to make the hover state (out of 1).
static const double kHoverOpacity = 0.33;
// Opacity for non-active selected tabs.
static const double kSelectedTabOpacity = .45;
// Selected (but not active) tabs have their throb value scaled down by this.
static const double kSelectedTabThrobScale = .5;
// Durations for the various parts of the mini tab title animation.
static const int kMiniTitleChangeAnimationDuration1MS = 1600;
static const int kMiniTitleChangeAnimationStart1MS = 0;
static const int kMiniTitleChangeAnimationEnd1MS = 1900;
static const int kMiniTitleChangeAnimationDuration2MS = 0;
static const int kMiniTitleChangeAnimationDuration3MS = 550;
static const int kMiniTitleChangeAnimationStart3MS = 150;
static const int kMiniTitleChangeAnimationEnd3MS = 800;
static const int kMiniTitleChangeAnimationIntervalMS = 40;
// Offset from the right edge for the start of the mini title change animation.
static const int kMiniTitleChangeInitialXOffset = 6;
// Radius of the radial gradient used for mini title change animation.
static const int kMiniTitleChangeGradientRadius = 20;
// Colors of the gradient used during the mini title change animation.
static const SkColor kMiniTitleChangeGradientColor1 = SK_ColorWHITE;
static const SkColor kMiniTitleChangeGradientColor2 =
SkColorSetARGB(0, 255, 255, 255);
// Max number of images to cache. This has to be at least two since rounding
// errors may lead to tabs in the same tabstrip having different sizes.
const size_t kMaxImageCacheSize = 4;
// Height of the miniature tab strip in immersive mode.
const int kImmersiveTabHeight = 3;
// Height of the small tab indicator rectangles in immersive mode.
const int kImmersiveBarHeight = 2;
// Color for active and inactive tabs in the immersive mode light strip. These
// should be a little brighter than the color of the normal art assets for tabs,
// which for active tabs is 230, 230, 230 and for inactive is 184, 184, 184.
const SkColor kImmersiveActiveTabColor = SkColorSetRGB(235, 235, 235);
const SkColor kImmersiveInactiveTabColor = SkColorSetRGB(190, 190, 190);
// The minimum opacity (out of 1) when a tab (either active or inactive) is
// throbbing in the immersive mode light strip.
const double kImmersiveTabMinThrobOpacity = 0.66;
// Number of steps in the immersive mode loading animation.
const int kImmersiveLoadingStepCount = 32;
const char kTabCloseButtonName[] = "TabCloseButton";
void DrawIconAtLocation(gfx::Canvas* canvas,
const gfx::ImageSkia& image,
int image_offset,
int dst_x,
int dst_y,
int icon_width,
int icon_height,
bool filter,
const SkPaint& paint) {
// NOTE: the clipping is a work around for 69528, it shouldn't be necessary.
canvas->Save();
canvas->ClipRect(gfx::Rect(dst_x, dst_y, icon_width, icon_height));
canvas->DrawImageInt(image,
image_offset, 0, icon_width, icon_height,
dst_x, dst_y, icon_width, icon_height,
filter, paint);
canvas->Restore();
}
// Draws the icon image at the center of |bounds|.
void DrawIconCenter(gfx::Canvas* canvas,
const gfx::ImageSkia& image,
int image_offset,
int icon_width,
int icon_height,
const gfx::Rect& bounds,
bool filter,
const SkPaint& paint) {
// Center the image within bounds.
int dst_x = bounds.x() - (icon_width - bounds.width()) / 2;
int dst_y = bounds.y() - (icon_height - bounds.height()) / 2;
DrawIconAtLocation(canvas, image, image_offset, dst_x, dst_y, icon_width,
icon_height, filter, paint);
}
chrome::HostDesktopType GetHostDesktopType(views::View* view) {
// Widget is NULL when tabs are detached.
views::Widget* widget = view->GetWidget();
return chrome::GetHostDesktopTypeForNativeView(
widget ? widget->GetNativeView() : NULL);
}
// Stop()s |animation| and then deletes it. We do this rather than just deleting
// so that the delegate is notified before the destruction.
void StopAndDeleteAnimation(scoped_ptr<gfx::Animation> animation) {
if (animation)
animation->Stop();
}
} // namespace
////////////////////////////////////////////////////////////////////////////////
// FaviconCrashAnimation
//
// A custom animation subclass to manage the favicon crash animation.
class Tab::FaviconCrashAnimation : public gfx::LinearAnimation,
public gfx::AnimationDelegate {
public:
explicit FaviconCrashAnimation(Tab* target)
: gfx::LinearAnimation(1000, 25, this),
target_(target) {
}
virtual ~FaviconCrashAnimation() {}
// gfx::Animation overrides:
virtual void AnimateToState(double state) OVERRIDE {
const double kHidingOffset = 27;
if (state < .5) {
target_->SetFaviconHidingOffset(
static_cast<int>(floor(kHidingOffset * 2.0 * state)));
} else {
target_->DisplayCrashedFavicon();
target_->SetFaviconHidingOffset(
static_cast<int>(
floor(kHidingOffset - ((state - .5) * 2.0 * kHidingOffset))));
}
}
// gfx::AnimationDelegate overrides:
virtual void AnimationCanceled(const gfx::Animation* animation) OVERRIDE {
target_->SetFaviconHidingOffset(0);
}
private:
Tab* target_;
DISALLOW_COPY_AND_ASSIGN(FaviconCrashAnimation);
};
////////////////////////////////////////////////////////////////////////////////
// TabCloseButton
//
// This is a Button subclass that causes middle clicks to be forwarded to the
// parent View by explicitly not handling them in OnMousePressed.
class Tab::TabCloseButton : public views::ImageButton,
public views::MaskedTargeterDelegate {
public:
explicit TabCloseButton(Tab* tab)
: views::ImageButton(tab),
tab_(tab) {
SetEventTargeter(
scoped_ptr<views::ViewTargeter>(new views::ViewTargeter(this)));
}
virtual ~TabCloseButton() {}
// views::View:
virtual View* GetTooltipHandlerForPoint(const gfx::Point& point) OVERRIDE {
// Tab close button has no children, so tooltip handler should be the same
// as the event handler.
// In addition, a hit test has to be performed for the point (as
// GetTooltipHandlerForPoint() is responsible for it).
if (!HitTestPoint(point))
return NULL;
return GetEventHandlerForPoint(point);
}
virtual bool OnMousePressed(const ui::MouseEvent& event) OVERRIDE {
tab_->controller_->OnMouseEventInTab(this, event);
bool handled = ImageButton::OnMousePressed(event);
// Explicitly mark midle-mouse clicks as non-handled to ensure the tab
// sees them.
return event.IsOnlyMiddleMouseButton() ? false : handled;
}
virtual void OnMouseMoved(const ui::MouseEvent& event) OVERRIDE {
tab_->controller_->OnMouseEventInTab(this, event);
CustomButton::OnMouseMoved(event);
}
virtual void OnMouseReleased(const ui::MouseEvent& event) OVERRIDE {
tab_->controller_->OnMouseEventInTab(this, event);
CustomButton::OnMouseReleased(event);
}
virtual void OnGestureEvent(ui::GestureEvent* event) OVERRIDE {
// Consume all gesture events here so that the parent (Tab) does not
// start consuming gestures.
ImageButton::OnGestureEvent(event);
event->SetHandled();
}
virtual const char* GetClassName() const OVERRIDE {
return kTabCloseButtonName;
}
private:
// Returns the rectangular bounds of parent tab's visible region in the
// local coordinate space of |this|.
gfx::Rect GetTabBounds() const {
gfx::Path tab_mask;
tab_->GetHitTestMask(&tab_mask);
gfx::RectF tab_bounds_f(gfx::SkRectToRectF(tab_mask.getBounds()));
views::View::ConvertRectToTarget(tab_, this, &tab_bounds_f);
return gfx::ToEnclosingRect(tab_bounds_f);
}
// Returns the rectangular bounds of the tab close button in the local
// coordinate space of |this|, not including clipped regions on the top
// or bottom of the button. |tab_bounds| is the rectangular bounds of
// the parent tab's visible region in the local coordinate space of |this|.
gfx::Rect GetTabCloseButtonBounds(const gfx::Rect& tab_bounds) const {
gfx::Rect button_bounds(GetContentsBounds());
button_bounds.set_x(GetMirroredXForRect(button_bounds));
int top_overflow = tab_bounds.y() - button_bounds.y();
int bottom_overflow = button_bounds.bottom() - tab_bounds.bottom();
if (top_overflow > 0)
button_bounds.set_y(tab_bounds.y());
else if (bottom_overflow > 0)
button_bounds.set_height(button_bounds.height() - bottom_overflow);
return button_bounds;
}
// views::ViewTargeterDelegate:
virtual View* TargetForRect(View* root, const gfx::Rect& rect) OVERRIDE {
CHECK_EQ(root, this);
if (!views::UsePointBasedTargeting(rect))
return ViewTargeterDelegate::TargetForRect(root, rect);
// Ignore the padding set on the button.
gfx::Rect contents_bounds = GetContentsBounds();
contents_bounds.set_x(GetMirroredXForRect(contents_bounds));
// Include the padding in hit-test for touch events.
if (aura::Env::GetInstance()->is_touch_down())
contents_bounds = GetLocalBounds();
return contents_bounds.Intersects(rect) ? this : parent();
}
// views:MaskedTargeterDelegate:
virtual bool GetHitTestMask(gfx::Path* mask) const OVERRIDE {
DCHECK(mask);
mask->reset();
// The parent tab may be partially occluded by another tab if we are
// in stacked tab mode, which means that the tab close button may also
// be partially occluded. Define the hit test mask of the tab close
// button to be the intersection of the parent tab's visible bounds
// and the bounds of the tab close button.
gfx::Rect tab_bounds(GetTabBounds());
gfx::Rect button_bounds(GetTabCloseButtonBounds(tab_bounds));
gfx::Rect intersection(gfx::IntersectRects(tab_bounds, button_bounds));
if (!intersection.IsEmpty()) {
mask->addRect(RectToSkRect(intersection));
return true;
}
return false;
}
virtual bool DoesIntersectRect(const View* target,
const gfx::Rect& rect) const OVERRIDE {
CHECK_EQ(target, this);
// If the request is not made in response to a gesture, use the
// default implementation.
if (views::UsePointBasedTargeting(rect))
return MaskedTargeterDelegate::DoesIntersectRect(target, rect);
// The hit test request is in response to a gesture. Return false if any
// part of the tab close button is hidden from the user.
// TODO(tdanderson): Consider always returning the intersection if the
// non-rectangular shape of the tab can be accounted for.
gfx::Rect tab_bounds(GetTabBounds());
gfx::Rect button_bounds(GetTabCloseButtonBounds(tab_bounds));
if (!tab_bounds.Contains(button_bounds))
return false;
return MaskedTargeterDelegate::DoesIntersectRect(target, rect);
}
Tab* tab_;
DISALLOW_COPY_AND_ASSIGN(TabCloseButton);
};
////////////////////////////////////////////////////////////////////////////////
// ImageCacheEntry
Tab::ImageCacheEntry::ImageCacheEntry()
: resource_id(-1),
scale_factor(ui::SCALE_FACTOR_NONE) {
}
Tab::ImageCacheEntry::~ImageCacheEntry() {}
////////////////////////////////////////////////////////////////////////////////
// Tab, statics:
// static
const char Tab::kViewClassName[] = "Tab";
Tab::TabImage Tab::tab_active_ = {0};
Tab::TabImage Tab::tab_inactive_ = {0};
Tab::TabImage Tab::tab_alpha_ = {0};
Tab::ImageCache* Tab::image_cache_ = NULL;
////////////////////////////////////////////////////////////////////////////////
// Tab, public:
Tab::Tab(TabController* controller)
: controller_(controller),
closing_(false),
dragging_(false),
detached_(false),
favicon_hiding_offset_(0),
loading_animation_frame_(0),
immersive_loading_step_(0),
should_display_crashed_favicon_(false),
close_button_(NULL),
media_indicator_button_(NULL),
title_(new views::Label()),
tab_activated_with_last_tap_down_(false),
hover_controller_(this),
showing_icon_(false),
showing_media_indicator_(false),
showing_close_button_(false),
close_button_color_(0) {
DCHECK(controller);
InitTabResources();
// So we get don't get enter/exit on children and don't prematurely stop the
// hover.
set_notify_enter_exit_on_child(true);
set_id(VIEW_ID_TAB);
title_->SetHorizontalAlignment(gfx::ALIGN_TO_HEAD);
title_->SetElideBehavior(gfx::FADE_TAIL);
title_->SetAutoColorReadabilityEnabled(false);
title_->SetText(CoreTabHelper::GetDefaultTitle());
AddChildView(title_);
SetEventTargeter(
scoped_ptr<views::ViewTargeter>(new views::ViewTargeter(this)));
// Add the Close Button.
close_button_ = new TabCloseButton(this);
ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
close_button_->SetImage(views::CustomButton::STATE_NORMAL,
rb.GetImageSkiaNamed(IDR_CLOSE_1));
close_button_->SetImage(views::CustomButton::STATE_HOVERED,
rb.GetImageSkiaNamed(IDR_CLOSE_1_H));
close_button_->SetImage(views::CustomButton::STATE_PRESSED,
rb.GetImageSkiaNamed(IDR_CLOSE_1_P));
close_button_->SetAccessibleName(
l10n_util::GetStringUTF16(IDS_ACCNAME_CLOSE));
// Disable animation so that the red danger sign shows up immediately
// to help avoid mis-clicks.
close_button_->SetAnimationDuration(0);
AddChildView(close_button_);
set_context_menu_controller(this);
}
Tab::~Tab() {
}
void Tab::set_animation_container(gfx::AnimationContainer* container) {
animation_container_ = container;
hover_controller_.SetAnimationContainer(container);
}
bool Tab::IsActive() const {
return controller_->IsActiveTab(this);
}
bool Tab::IsSelected() const {
return controller_->IsTabSelected(this);
}
void Tab::SetData(const TabRendererData& data) {
if (data_.Equals(data))
return;
TabRendererData old(data_);
data_ = data;
base::string16 title = data_.title;
if (title.empty()) {
title = data_.loading ?
l10n_util::GetStringUTF16(IDS_TAB_LOADING_TITLE) :
CoreTabHelper::GetDefaultTitle();
} else {
Browser::FormatTitleForDisplay(&title);
}
title_->SetText(title);
if (data_.IsCrashed()) {
if (!should_display_crashed_favicon_ && !IsPerformingCrashAnimation()) {
data_.media_state = TAB_MEDIA_STATE_NONE;
#if defined(OS_CHROMEOS)
// On Chrome OS, we reload killed tabs automatically when the user
// switches to them. Don't display animations for these unless they're
// selected (i.e. in the foreground) -- we won't reload these
// automatically since we don't want to get into a crash loop.
if (IsSelected() ||
data_.crashed_status != base::TERMINATION_STATUS_PROCESS_WAS_KILLED)
StartCrashAnimation();
#else
StartCrashAnimation();
#endif
}
} else {
if (IsPerformingCrashAnimation())
StopCrashAnimation();
ResetCrashedFavicon();
}
if (data_.media_state != old.media_state)
GetMediaIndicatorButton()->TransitionToMediaState(data_.media_state);
if (old.mini != data_.mini) {
StopAndDeleteAnimation(
mini_title_change_animation_.PassAs<gfx::Animation>());
}
DataChanged(old);
Layout();
SchedulePaint();
}
void Tab::UpdateLoadingAnimation(TabRendererData::NetworkState state) {
if (state == data_.network_state &&
state == TabRendererData::NETWORK_STATE_NONE) {
// If the network state is none and hasn't changed, do nothing. Otherwise we
// need to advance the animation frame.
return;
}
TabRendererData::NetworkState old_state = data_.network_state;
data_.network_state = state;
AdvanceLoadingAnimation(old_state, state);
}
void Tab::StartPulse() {
pulse_animation_.reset(new gfx::ThrobAnimation(this));
pulse_animation_->SetSlideDuration(kPulseDurationMs);
if (animation_container_.get())
pulse_animation_->SetContainer(animation_container_.get());
pulse_animation_->StartThrobbing(std::numeric_limits<int>::max());
}
void Tab::StopPulse() {
StopAndDeleteAnimation(pulse_animation_.PassAs<gfx::Animation>());
}
void Tab::StartMiniTabTitleAnimation() {
if (!data().mini)
return;
if (!mini_title_change_animation_) {
gfx::MultiAnimation::Parts parts;
parts.push_back(
gfx::MultiAnimation::Part(kMiniTitleChangeAnimationDuration1MS,
gfx::Tween::EASE_OUT));
parts.push_back(
gfx::MultiAnimation::Part(kMiniTitleChangeAnimationDuration2MS,
gfx::Tween::ZERO));
parts.push_back(
gfx::MultiAnimation::Part(kMiniTitleChangeAnimationDuration3MS,
gfx::Tween::EASE_IN));
parts[0].start_time_ms = kMiniTitleChangeAnimationStart1MS;
parts[0].end_time_ms = kMiniTitleChangeAnimationEnd1MS;
parts[2].start_time_ms = kMiniTitleChangeAnimationStart3MS;
parts[2].end_time_ms = kMiniTitleChangeAnimationEnd3MS;
base::TimeDelta timeout =
base::TimeDelta::FromMilliseconds(kMiniTitleChangeAnimationIntervalMS);
mini_title_change_animation_.reset(new gfx::MultiAnimation(parts, timeout));
if (animation_container_.get())
mini_title_change_animation_->SetContainer(animation_container_.get());
mini_title_change_animation_->set_delegate(this);
}
mini_title_change_animation_->Start();
}
void Tab::StopMiniTabTitleAnimation() {
StopAndDeleteAnimation(mini_title_change_animation_.PassAs<gfx::Animation>());
}
// static
gfx::Size Tab::GetBasicMinimumUnselectedSize() {
InitTabResources();
gfx::Size minimum_size;
minimum_size.set_width(kLeftPadding + kRightPadding);
// Since we use image images, the real minimum height of the image is
// defined most accurately by the height of the end cap images.
minimum_size.set_height(tab_active_.image_l->height());
return minimum_size;
}
gfx::Size Tab::GetMinimumUnselectedSize() {
return GetBasicMinimumUnselectedSize();
}
// static
gfx::Size Tab::GetMinimumSelectedSize() {
gfx::Size minimum_size = GetBasicMinimumUnselectedSize();
minimum_size.set_width(
kLeftPadding + gfx::kFaviconSize + kRightPadding);
return minimum_size;
}
// static
gfx::Size Tab::GetStandardSize() {
gfx::Size standard_size = GetBasicMinimumUnselectedSize();
standard_size.set_width(
standard_size.width() + kFaviconTitleSpacing + kStandardTitleWidth);
return standard_size;
}
// static
int Tab::GetTouchWidth() {
return kTouchWidth;
}
// static
int Tab::GetMiniWidth() {
return browser_defaults::kMiniTabWidth;
}
// static
int Tab::GetImmersiveHeight() {
return kImmersiveTabHeight;
}
////////////////////////////////////////////////////////////////////////////////
// Tab, AnimationDelegate overrides:
void Tab::AnimationProgressed(const gfx::Animation* animation) {
// Ignore if the pulse animation is being performed on active tab because
// it repaints the same image. See |Tab::PaintTabBackground()|.
if (animation == pulse_animation_.get() && IsActive())
return;
SchedulePaint();
}
void Tab::AnimationCanceled(const gfx::Animation* animation) {
SchedulePaint();
}
void Tab::AnimationEnded(const gfx::Animation* animation) {
SchedulePaint();
}
////////////////////////////////////////////////////////////////////////////////
// Tab, views::ButtonListener overrides:
void Tab::ButtonPressed(views::Button* sender, const ui::Event& event) {
if (media_indicator_button_ && media_indicator_button_->visible()) {
if (media_indicator_button_->enabled())
content::RecordAction(UserMetricsAction("CloseTab_MuteToggleAvailable"));
else if (data_.media_state == TAB_MEDIA_STATE_AUDIO_PLAYING)
content::RecordAction(UserMetricsAction("CloseTab_AudioIndicator"));
else
content::RecordAction(UserMetricsAction("CloseTab_RecordingIndicator"));
} else {
content::RecordAction(UserMetricsAction("CloseTab_NoMediaIndicator"));
}
const CloseTabSource source =
(event.type() == ui::ET_MOUSE_RELEASED &&
(event.flags() & ui::EF_FROM_TOUCH) == 0) ? CLOSE_TAB_FROM_MOUSE :
CLOSE_TAB_FROM_TOUCH;
DCHECK_EQ(close_button_, sender);
controller_->CloseTab(this, source);
if (event.type() == ui::ET_GESTURE_TAP)
TouchUMA::RecordGestureAction(TouchUMA::GESTURE_TABCLOSE_TAP);
}
////////////////////////////////////////////////////////////////////////////////
// Tab, views::ContextMenuController overrides:
void Tab::ShowContextMenuForView(views::View* source,
const gfx::Point& point,
ui::MenuSourceType source_type) {
if (!closing())
controller_->ShowContextMenuForTab(this, point, source_type);
}
////////////////////////////////////////////////////////////////////////////////
// Tab, views::MaskedTargeterDelegate overrides:
bool Tab::GetHitTestMask(gfx::Path* mask) const {
DCHECK(mask);
// When the window is maximized we don't want to shave off the edges or top
// shadow of the tab, such that the user can click anywhere along the top
// edge of the screen to select a tab. Ditto for immersive fullscreen.
const views::Widget* widget = GetWidget();
bool include_top_shadow =
widget && (widget->IsMaximized() || widget->IsFullscreen());
TabResources::GetHitTestMask(width(), height(), include_top_shadow, mask);
// It is possible for a portion of the tab to be occluded if tabs are
// stacked, so modify the hit test mask to only include the visible
// region of the tab.
gfx::Rect clip;
controller_->ShouldPaintTab(this, &clip);
if (clip.size().GetArea()) {
SkRect intersection(mask->getBounds());
intersection.intersect(RectToSkRect(clip));
mask->reset();
mask->addRect(intersection);
}
return true;
}
////////////////////////////////////////////////////////////////////////////////
// Tab, views::View overrides:
void Tab::OnPaint(gfx::Canvas* canvas) {
// Don't paint if we're narrower than we can render correctly. (This should
// only happen during animations).
if (width() < GetMinimumUnselectedSize().width() && !data().mini)
return;
gfx::Rect clip;
if (!controller_->ShouldPaintTab(this, &clip))
return;
if (!clip.IsEmpty()) {
canvas->Save();
canvas->ClipRect(clip);
}
if (controller_->IsImmersiveStyle())
PaintImmersiveTab(canvas);
else
PaintTab(canvas);
if (!clip.IsEmpty())
canvas->Restore();
}
void Tab::Layout() {
gfx::Rect lb = GetContentsBounds();
if (lb.IsEmpty())
return;
lb.Inset(kLeftPadding, kTopPadding, kRightPadding, kBottomPadding);
showing_icon_ = ShouldShowIcon();
favicon_bounds_.SetRect(lb.x(), lb.y(), 0, 0);
if (showing_icon_) {
favicon_bounds_.set_size(gfx::Size(gfx::kFaviconSize, gfx::kFaviconSize));
favicon_bounds_.set_y(lb.y() + (lb.height() - gfx::kFaviconSize + 1) / 2);
MaybeAdjustLeftForMiniTab(&favicon_bounds_);
}
showing_close_button_ = ShouldShowCloseBox();
if (showing_close_button_) {
// If the ratio of the close button size to tab width exceeds the maximum.
// The close button should be as large as possible so that there is a larger
// hit-target for touch events. So the close button bounds extends to the
// edges of the tab. However, the larger hit-target should be active only
// for mouse events, and the close-image should show up in the right place.
// So a border is added to the button with necessary padding. The close
// button (BaseTab::TabCloseButton) makes sure the padding is a hit-target
// only for touch events.
close_button_->SetBorder(views::Border::NullBorder());
const gfx::Size close_button_size(close_button_->GetPreferredSize());
const int top = lb.y() + (lb.height() - close_button_size.height() + 1) / 2;
const int bottom = height() - (close_button_size.height() + top);
const int left = kViewSpacing;
const int right = width() - (lb.width() + close_button_size.width() + left);
close_button_->SetBorder(
views::Border::CreateEmptyBorder(top, left, bottom, right));
close_button_->SetPosition(gfx::Point(lb.width(), 0));
close_button_->SizeToPreferredSize();
}
close_button_->SetVisible(showing_close_button_);
showing_media_indicator_ = ShouldShowMediaIndicator();
if (showing_media_indicator_) {
views::ImageButton* const button = GetMediaIndicatorButton();
const gfx::Size image_size(button->GetPreferredSize());
const int right = showing_close_button_ ?
close_button_->x() + close_button_->GetInsets().left() : lb.right();
gfx::Rect bounds(
std::max(lb.x(), right - image_size.width()),
lb.y() + (lb.height() - image_size.height() + 1) / 2,
image_size.width(),
image_size.height());
MaybeAdjustLeftForMiniTab(&bounds);
button->SetBoundsRect(bounds);
button->SetVisible(true);
} else if (media_indicator_button_) {
media_indicator_button_->SetVisible(false);
}
// Size the title to fill the remaining width and use all available height.
bool show_title = !data().mini || width() >= kMiniTabRendererAsNormalTabWidth;
if (show_title) {
int title_left = favicon_bounds_.right() + kFaviconTitleSpacing;
int title_width = lb.width() - title_left;
if (showing_media_indicator_) {
title_width = media_indicator_button_->x() - kViewSpacing - title_left;
} else if (close_button_->visible()) {
// Allow the title to overlay the close button's empty border padding.
title_width = close_button_->x() + close_button_->GetInsets().left() -
kViewSpacing - title_left;
}
gfx::Rect rect(title_left, lb.y(), std::max(title_width, 0), lb.height());
const int title_height = title_->GetPreferredSize().height();
if (title_height > rect.height()) {
rect.set_y(lb.y() - (title_height - rect.height()) / 2);
rect.set_height(title_height);
}
title_->SetBoundsRect(rect);
}
title_->SetVisible(show_title);
}
void Tab::OnThemeChanged() {
LoadTabImages();
}
const char* Tab::GetClassName() const {
return kViewClassName;
}
bool Tab::GetTooltipText(const gfx::Point& p, base::string16* tooltip) const {
// Note: Anything that affects the tooltip text should be accounted for when
// calling TooltipTextChanged() from Tab::DataChanged().
*tooltip = chrome::AssembleTabTooltipText(data_.title, data_.media_state);
return !tooltip->empty();
}
bool Tab::GetTooltipTextOrigin(const gfx::Point& p, gfx::Point* origin) const {
origin->set_x(title_->x() + 10);
origin->set_y(-views::TooltipManager::GetTooltipHeight() - 4);
return true;
}
bool Tab::OnMousePressed(const ui::MouseEvent& event) {
controller_->OnMouseEventInTab(this, event);
// Allow a right click from touch to drag, which corresponds to a long click.
if (event.IsOnlyLeftMouseButton() ||
(event.IsOnlyRightMouseButton() && event.flags() & ui::EF_FROM_TOUCH)) {
ui::ListSelectionModel original_selection;
original_selection.Copy(controller_->GetSelectionModel());
// Changing the selection may cause our bounds to change. If that happens
// the location of the event may no longer be valid. Create a copy of the
// event in the parents coordinate, which won't change, and recreate an
// event after changing so the coordinates are correct.
ui::MouseEvent event_in_parent(event, static_cast<View*>(this), parent());
if (controller_->SupportsMultipleSelection()) {
if (event.IsShiftDown() && event.IsControlDown()) {
controller_->AddSelectionFromAnchorTo(this);
} else if (event.IsShiftDown()) {
controller_->ExtendSelectionTo(this);
} else if (event.IsControlDown()) {
controller_->ToggleSelected(this);
if (!IsSelected()) {
// Don't allow dragging non-selected tabs.
return false;
}
} else if (!IsSelected()) {
controller_->SelectTab(this);
}
} else if (!IsSelected()) {
controller_->SelectTab(this);
}
ui::MouseEvent cloned_event(event_in_parent, parent(),
static_cast<View*>(this));
controller_->MaybeStartDrag(this, cloned_event, original_selection);
}
return true;
}
bool Tab::OnMouseDragged(const ui::MouseEvent& event) {
controller_->ContinueDrag(this, event);
return true;
}
void Tab::OnMouseReleased(const ui::MouseEvent& event) {
controller_->OnMouseEventInTab(this, event);
// Notify the drag helper that we're done with any potential drag operations.
// Clean up the drag helper, which is re-created on the next mouse press.
// In some cases, ending the drag will schedule the tab for destruction; if
// so, bail immediately, since our members are already dead and we shouldn't
// do anything else except drop the tab where it is.
if (controller_->EndDrag(END_DRAG_COMPLETE))
return;
// Close tab on middle click, but only if the button is released over the tab
// (normal windows behavior is to discard presses of a UI element where the
// releases happen off the element).
if (event.IsMiddleMouseButton()) {
if (HitTestPoint(event.location())) {
controller_->CloseTab(this, CLOSE_TAB_FROM_MOUSE);
} else if (closing_) {
// We're animating closed and a middle mouse button was pushed on us but
// we don't contain the mouse anymore. We assume the user is clicking
// quicker than the animation and we should close the tab that falls under
// the mouse.
Tab* closest_tab = controller_->GetTabAt(this, event.location());
if (closest_tab)
controller_->CloseTab(closest_tab, CLOSE_TAB_FROM_MOUSE);
}
} else if (event.IsOnlyLeftMouseButton() && !event.IsShiftDown() &&
!event.IsControlDown()) {
// If the tab was already selected mouse pressed doesn't change the
// selection. Reset it now to handle the case where multiple tabs were
// selected.
controller_->SelectTab(this);
if (media_indicator_button_ && media_indicator_button_->visible() &&
media_indicator_button_->bounds().Contains(event.location())) {
content::RecordAction(UserMetricsAction("TabMediaIndicator_Clicked"));
}
}
}
void Tab::OnMouseCaptureLost() {
controller_->EndDrag(END_DRAG_CAPTURE_LOST);
}
void Tab::OnMouseEntered(const ui::MouseEvent& event) {
hover_controller_.Show(views::GlowHoverController::SUBTLE);
}
void Tab::OnMouseMoved(const ui::MouseEvent& event) {
hover_controller_.SetLocation(event.location());
controller_->OnMouseEventInTab(this, event);
}
void Tab::OnMouseExited(const ui::MouseEvent& event) {
hover_controller_.Hide();
}
void Tab::OnGestureEvent(ui::GestureEvent* event) {
switch (event->type()) {
case ui::ET_GESTURE_TAP_DOWN: {
// TAP_DOWN is only dispatched for the first touch point.
DCHECK_EQ(1, event->details().touch_points());
// See comment in OnMousePressed() as to why we copy the event.
ui::GestureEvent event_in_parent(*event, static_cast<View*>(this),
parent());
ui::ListSelectionModel original_selection;
original_selection.Copy(controller_->GetSelectionModel());
tab_activated_with_last_tap_down_ = !IsActive();
if (!IsSelected())
controller_->SelectTab(this);
gfx::Point loc(event->location());
views::View::ConvertPointToScreen(this, &loc);
ui::GestureEvent cloned_event(event_in_parent, parent(),
static_cast<View*>(this));
controller_->MaybeStartDrag(this, cloned_event, original_selection);
break;
}
case ui::ET_GESTURE_END:
controller_->EndDrag(END_DRAG_COMPLETE);
break;
case ui::ET_GESTURE_SCROLL_UPDATE:
controller_->ContinueDrag(this, *event);
break;
default:
break;
}
event->SetHandled();
}
void Tab::GetAccessibleState(ui::AXViewState* state) {
state->role = ui::AX_ROLE_TAB;
state->name = data_.title;
state->AddStateFlag(ui::AX_STATE_MULTISELECTABLE);
state->AddStateFlag(ui::AX_STATE_SELECTABLE);
controller_->UpdateTabAccessibilityState(this, state);
if (IsSelected())
state->AddStateFlag(ui::AX_STATE_SELECTED);
}
////////////////////////////////////////////////////////////////////////////////
// Tab, private
void Tab::MaybeAdjustLeftForMiniTab(gfx::Rect* bounds) const {
if (!data().mini || width() >= kMiniTabRendererAsNormalTabWidth)
return;
const int mini_delta = kMiniTabRendererAsNormalTabWidth - GetMiniWidth();
const int ideal_delta = width() - GetMiniWidth();
const int ideal_x = (GetMiniWidth() - bounds->width()) / 2;
bounds->set_x(bounds->x() + static_cast<int>(
(1 - static_cast<float>(ideal_delta) / static_cast<float>(mini_delta)) *
(ideal_x - bounds->x())));
}
void Tab::DataChanged(const TabRendererData& old) {
if (data().media_state != old.media_state || data().title != old.title)
TooltipTextChanged();
if (data().blocked == old.blocked)
return;
if (data().blocked)
StartPulse();
else
StopPulse();
}
void Tab::PaintTab(gfx::Canvas* canvas) {
// See if the model changes whether the icons should be painted.
const bool show_icon = ShouldShowIcon();
const bool show_media_indicator = ShouldShowMediaIndicator();
const bool show_close_button = ShouldShowCloseBox();
if (show_icon != showing_icon_ ||
show_media_indicator != showing_media_indicator_ ||
show_close_button != showing_close_button_) {
Layout();
}
PaintTabBackground(canvas);
const SkColor title_color = GetThemeProvider()->GetColor(IsSelected() ?
ThemeProperties::COLOR_TAB_TEXT :
ThemeProperties::COLOR_BACKGROUND_TAB_TEXT);
title_->SetVisible(!data().mini ||
width() > kMiniTabRendererAsNormalTabWidth);
title_->SetEnabledColor(title_color);
if (show_icon)
PaintIcon(canvas);
// If the close button color has changed, generate a new one.
if (!close_button_color_ || title_color != close_button_color_) {
close_button_color_ = title_color;
ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
close_button_->SetBackground(close_button_color_,
rb.GetImageSkiaNamed(IDR_CLOSE_1),
rb.GetImageSkiaNamed(IDR_CLOSE_1_MASK));
}
}
void Tab::PaintImmersiveTab(gfx::Canvas* canvas) {
// Use transparency for the draw-attention animation.
int alpha = 255;
if (pulse_animation_ && pulse_animation_->is_animating() && !data().mini) {
alpha = pulse_animation_->CurrentValueBetween(
255, static_cast<int>(255 * kImmersiveTabMinThrobOpacity));
}
// Draw a gray rectangle to represent the tab. This works for mini-tabs as
// well as regular ones. The active tab has a brigher bar.
SkColor color =
IsActive() ? kImmersiveActiveTabColor : kImmersiveInactiveTabColor;
gfx::Rect bar_rect = GetImmersiveBarRect();
canvas->FillRect(bar_rect, SkColorSetA(color, alpha));
// Paint network activity indicator.
// TODO(jamescook): Replace this placeholder animation with a real one.
// For now, let's go with a Cylon eye effect, but in blue.
if (data().network_state != TabRendererData::NETWORK_STATE_NONE) {
const SkColor kEyeColor = SkColorSetARGB(alpha, 71, 138, 217);
int eye_width = bar_rect.width() / 3;
int eye_offset = bar_rect.width() * immersive_loading_step_ /
kImmersiveLoadingStepCount;
if (eye_offset + eye_width < bar_rect.width()) {
// Draw a single indicator strip because it fits inside |bar_rect|.
gfx::Rect eye_rect(
bar_rect.x() + eye_offset, 0, eye_width, kImmersiveBarHeight);
canvas->FillRect(eye_rect, kEyeColor);
} else {
// Draw two indicators to simulate the eye "wrapping around" to the left
// side. The first part fills the remainder of the bar.
int right_eye_width = bar_rect.width() - eye_offset;
gfx::Rect right_eye_rect(
bar_rect.x() + eye_offset, 0, right_eye_width, kImmersiveBarHeight);
canvas->FillRect(right_eye_rect, kEyeColor);
// The second part parts the remaining |eye_width| on the left.
int left_eye_width = eye_offset + eye_width - bar_rect.width();
gfx::Rect left_eye_rect(
bar_rect.x(), 0, left_eye_width, kImmersiveBarHeight);
canvas->FillRect(left_eye_rect, kEyeColor);
}
}
}
void Tab::PaintTabBackground(gfx::Canvas* canvas) {
if (IsActive()) {
PaintActiveTabBackground(canvas);
} else {
if (mini_title_change_animation_ &&
mini_title_change_animation_->is_animating()) {
PaintInactiveTabBackgroundWithTitleChange(canvas);
} else {
PaintInactiveTabBackground(canvas);
}
double throb_value = GetThrobValue();
if (throb_value > 0) {
canvas->SaveLayerAlpha(static_cast<int>(throb_value * 0xff),
GetLocalBounds());
PaintActiveTabBackground(canvas);
canvas->Restore();
}
}
}
void Tab::PaintInactiveTabBackgroundWithTitleChange(gfx::Canvas* canvas) {
// Render the inactive tab background. We'll use this for clipping.
gfx::Canvas background_canvas(size(), canvas->image_scale(), false);
PaintInactiveTabBackground(&background_canvas);
gfx::ImageSkia background_image(background_canvas.ExtractImageRep());
// Draw a radial gradient to hover_canvas.
gfx::Canvas hover_canvas(size(), canvas->image_scale(), false);
int radius = kMiniTitleChangeGradientRadius;
int x0 = width() + radius - kMiniTitleChangeInitialXOffset;
int x1 = radius;
int x2 = -radius;
int x;
if (mini_title_change_animation_->current_part_index() == 0) {
x = mini_title_change_animation_->CurrentValueBetween(x0, x1);
} else if (mini_title_change_animation_->current_part_index() == 1) {
x = x1;
} else {
x = mini_title_change_animation_->CurrentValueBetween(x1, x2);
}
SkPoint center_point;
center_point.iset(x, 0);
SkColor colors[2] = { kMiniTitleChangeGradientColor1,
kMiniTitleChangeGradientColor2 };
skia::RefPtr<SkShader> shader = skia::AdoptRef(
SkGradientShader::CreateRadial(
center_point, SkIntToScalar(radius), colors, NULL, 2,
SkShader::kClamp_TileMode));
SkPaint paint;
paint.setShader(shader.get());
hover_canvas.DrawRect(gfx::Rect(x - radius, -radius, radius * 2, radius * 2),
paint);
// Draw the radial gradient clipped to the background into hover_image.
gfx::ImageSkia hover_image = gfx::ImageSkiaOperations::CreateMaskedImage(
gfx::ImageSkia(hover_canvas.ExtractImageRep()), background_image);
// Draw the tab background to the canvas.
canvas->DrawImageInt(background_image, 0, 0);
// And then the gradient on top of that.
if (mini_title_change_animation_->current_part_index() == 2) {
uint8 alpha = mini_title_change_animation_->CurrentValueBetween(255, 0);
canvas->DrawImageInt(hover_image, 0, 0, alpha);
} else {
canvas->DrawImageInt(hover_image, 0, 0);
}
}
void Tab::PaintInactiveTabBackground(gfx::Canvas* canvas) {
int tab_id;
int frame_id;
views::Widget* widget = GetWidget();
GetTabIdAndFrameId(widget, &tab_id, &frame_id);
// Explicitly map the id so we cache correctly.
const chrome::HostDesktopType host_desktop_type = GetHostDesktopType(this);
tab_id = chrome::MapThemeImage(host_desktop_type, tab_id);
// HasCustomImage() is only true if the theme provides the image. However,
// even if the theme does not provide a tab background, the theme machinery
// will make one if given a frame image.
ui::ThemeProvider* theme_provider = GetThemeProvider();
const bool theme_provided_image = theme_provider->HasCustomImage(tab_id) ||
(frame_id != 0 && theme_provider->HasCustomImage(frame_id));
const bool can_cache = !theme_provided_image &&
!hover_controller_.ShouldDraw();
if (can_cache) {
ui::ScaleFactor scale_factor =
ui::GetSupportedScaleFactor(canvas->image_scale());
gfx::ImageSkia cached_image(GetCachedImage(tab_id, size(), scale_factor));
if (cached_image.width() == 0) {
gfx::Canvas tmp_canvas(size(), canvas->image_scale(), false);
PaintInactiveTabBackgroundUsingResourceId(&tmp_canvas, tab_id);
cached_image = gfx::ImageSkia(tmp_canvas.ExtractImageRep());
SetCachedImage(tab_id, scale_factor, cached_image);
}
canvas->DrawImageInt(cached_image, 0, 0);
} else {
PaintInactiveTabBackgroundUsingResourceId(canvas, tab_id);
}
}
void Tab::PaintInactiveTabBackgroundUsingResourceId(gfx::Canvas* canvas,
int tab_id) {
// WARNING: the inactive tab background may be cached. If you change what it
// is drawn from you may need to update whether it can be cached.
// The tab image needs to be lined up with the background image
// so that it feels partially transparent. These offsets represent the tab
// position within the frame background image.
int offset = GetMirroredX() + background_offset_.x();
gfx::ImageSkia* tab_bg = GetThemeProvider()->GetImageSkiaNamed(tab_id);
TabImage* tab_image = &tab_active_;
TabImage* tab_inactive_image = &tab_inactive_;
TabImage* alpha = &tab_alpha_;
// If the theme is providing a custom background image, then its top edge
// should be at the top of the tab. Otherwise, we assume that the background
// image is a composited foreground + frame image.
int bg_offset_y = GetThemeProvider()->HasCustomImage(tab_id) ?
0 : background_offset_.y();
// We need a gfx::Canvas object to be able to extract the image from.
// We draw everything to this canvas and then output it to the canvas
// parameter in addition to using it to mask the hover glow if needed.
gfx::Canvas background_canvas(size(), canvas->image_scale(), false);
// Draw left edge. Don't draw over the toolbar, as we're not the foreground
// tab.
gfx::ImageSkia tab_l = gfx::ImageSkiaOperations::CreateTiledImage(
*tab_bg, offset, bg_offset_y, tab_image->l_width, height());
gfx::ImageSkia theme_l =
gfx::ImageSkiaOperations::CreateMaskedImage(tab_l, *alpha->image_l);
background_canvas.DrawImageInt(theme_l,
0, 0, theme_l.width(), theme_l.height() - kToolbarOverlap,
0, 0, theme_l.width(), theme_l.height() - kToolbarOverlap,
false);
// Draw right edge. Again, don't draw over the toolbar.
gfx::ImageSkia tab_r = gfx::ImageSkiaOperations::CreateTiledImage(*tab_bg,
offset + width() - tab_image->r_width, bg_offset_y,
tab_image->r_width, height());
gfx::ImageSkia theme_r =
gfx::ImageSkiaOperations::CreateMaskedImage(tab_r, *alpha->image_r);
background_canvas.DrawImageInt(theme_r,
0, 0, theme_r.width(), theme_r.height() - kToolbarOverlap,
width() - theme_r.width(), 0, theme_r.width(),
theme_r.height() - kToolbarOverlap, false);
// Draw center. Instead of masking out the top portion we simply skip over
// it by incrementing by GetDropShadowHeight(), since it's a simple
// rectangle. And again, don't draw over the toolbar.
background_canvas.TileImageInt(*tab_bg,
offset + tab_image->l_width,
bg_offset_y + kDropShadowHeight,
tab_image->l_width,
kDropShadowHeight,
width() - tab_image->l_width - tab_image->r_width,
height() - kDropShadowHeight - kToolbarOverlap);
canvas->DrawImageInt(
gfx::ImageSkia(background_canvas.ExtractImageRep()), 0, 0);
if (!GetThemeProvider()->HasCustomImage(tab_id) &&
hover_controller_.ShouldDraw()) {
hover_controller_.Draw(canvas, gfx::ImageSkia(
background_canvas.ExtractImageRep()));
}
// Now draw the highlights/shadows around the tab edge.
canvas->DrawImageInt(*tab_inactive_image->image_l, 0, 0);
canvas->TileImageInt(*tab_inactive_image->image_c,
tab_inactive_image->l_width, 0,
width() - tab_inactive_image->l_width -
tab_inactive_image->r_width,
height());
canvas->DrawImageInt(*tab_inactive_image->image_r,
width() - tab_inactive_image->r_width, 0);
}
void Tab::PaintActiveTabBackground(gfx::Canvas* canvas) {
gfx::ImageSkia* tab_background =
GetThemeProvider()->GetImageSkiaNamed(IDR_THEME_TOOLBAR);
int offset = GetMirroredX() + background_offset_.x();
TabImage* tab_image = &tab_active_;
TabImage* alpha = &tab_alpha_;
// Draw left edge.
gfx::ImageSkia tab_l = gfx::ImageSkiaOperations::CreateTiledImage(
*tab_background, offset, 0, tab_image->l_width, height());
gfx::ImageSkia theme_l =
gfx::ImageSkiaOperations::CreateMaskedImage(tab_l, *alpha->image_l);
canvas->DrawImageInt(theme_l, 0, 0);
// Draw right edge.
gfx::ImageSkia tab_r = gfx::ImageSkiaOperations::CreateTiledImage(
*tab_background,
offset + width() - tab_image->r_width, 0, tab_image->r_width, height());
gfx::ImageSkia theme_r =
gfx::ImageSkiaOperations::CreateMaskedImage(tab_r, *alpha->image_r);
canvas->DrawImageInt(theme_r, width() - tab_image->r_width, 0);
// Draw center. Instead of masking out the top portion we simply skip over it
// by incrementing by GetDropShadowHeight(), since it's a simple rectangle.
canvas->TileImageInt(*tab_background,
offset + tab_image->l_width,
kDropShadowHeight,
tab_image->l_width,
kDropShadowHeight,
width() - tab_image->l_width - tab_image->r_width,
height() - kDropShadowHeight);
// Now draw the highlights/shadows around the tab edge.
canvas->DrawImageInt(*tab_image->image_l, 0, 0);
canvas->TileImageInt(*tab_image->image_c, tab_image->l_width, 0,
width() - tab_image->l_width - tab_image->r_width, height());
canvas->DrawImageInt(*tab_image->image_r, width() - tab_image->r_width, 0);
}
void Tab::PaintIcon(gfx::Canvas* canvas) {
gfx::Rect bounds = favicon_bounds_;
if (bounds.IsEmpty())
return;
bounds.set_x(GetMirroredXForRect(bounds));
if (data().network_state != TabRendererData::NETWORK_STATE_NONE) {
// Paint network activity (aka throbber) animation frame.
ui::ThemeProvider* tp = GetThemeProvider();
gfx::ImageSkia frames(*tp->GetImageSkiaNamed(
(data().network_state == TabRendererData::NETWORK_STATE_WAITING) ?
IDR_THROBBER_WAITING : IDR_THROBBER));
int icon_size = frames.height();
int image_offset = loading_animation_frame_ * icon_size;
DrawIconCenter(canvas, frames, image_offset,
icon_size, icon_size,
bounds, false, SkPaint());
} else if (should_display_crashed_favicon_) {
// Paint crash favicon.
ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
gfx::ImageSkia crashed_favicon(*rb.GetImageSkiaNamed(IDR_SAD_FAVICON));
bounds.set_y(bounds.y() + favicon_hiding_offset_);
DrawIconCenter(canvas, crashed_favicon, 0,
crashed_favicon.width(),
crashed_favicon.height(),
bounds, true, SkPaint());
} else if (!data().favicon.isNull()) {
// Paint the normal favicon.
DrawIconCenter(canvas, data().favicon, 0,
data().favicon.width(),
data().favicon.height(),
bounds, true, SkPaint());
}
}
void Tab::AdvanceLoadingAnimation(TabRendererData::NetworkState old_state,
TabRendererData::NetworkState state) {
static bool initialized = false;
static int loading_animation_frame_count = 0;
static int waiting_animation_frame_count = 0;
static int waiting_to_loading_frame_count_ratio = 0;
if (!initialized) {
initialized = true;
ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
gfx::ImageSkia loading_animation(*rb.GetImageSkiaNamed(IDR_THROBBER));
loading_animation_frame_count =
loading_animation.width() / loading_animation.height();
gfx::ImageSkia waiting_animation(*rb.GetImageSkiaNamed(
IDR_THROBBER_WAITING));
waiting_animation_frame_count =
waiting_animation.width() / waiting_animation.height();
waiting_to_loading_frame_count_ratio =
waiting_animation_frame_count / loading_animation_frame_count;
base::debug::Alias(&loading_animation_frame_count);
base::debug::Alias(&waiting_animation_frame_count);
CHECK_NE(0, waiting_to_loading_frame_count_ratio) <<
"Number of frames in IDR_THROBBER must be equal to or greater " <<
"than the number of frames in IDR_THROBBER_WAITING. Please " <<
"investigate how this happened and update http://crbug.com/132590, " <<
"this is causing crashes in the wild.";
}
// The waiting animation is the reverse of the loading animation, but at a
// different rate - the following reverses and scales the animation_frame_
// so that the frame is at an equivalent position when going from one
// animation to the other.
if (state != old_state) {
loading_animation_frame_ = loading_animation_frame_count -
(loading_animation_frame_ / waiting_to_loading_frame_count_ratio);
}
if (state == TabRendererData::NETWORK_STATE_WAITING) {
loading_animation_frame_ = (loading_animation_frame_ + 1) %
waiting_animation_frame_count;
// Waiting steps backwards.
immersive_loading_step_ =
(immersive_loading_step_ - 1 + kImmersiveLoadingStepCount) %
kImmersiveLoadingStepCount;
} else if (state == TabRendererData::NETWORK_STATE_LOADING) {
loading_animation_frame_ = (loading_animation_frame_ + 1) %
loading_animation_frame_count;
immersive_loading_step_ = (immersive_loading_step_ + 1) %
kImmersiveLoadingStepCount;
} else {
loading_animation_frame_ = 0;
immersive_loading_step_ = 0;
}
if (controller_->IsImmersiveStyle())
SchedulePaintInRect(GetImmersiveBarRect());
else
ScheduleIconPaint();
}
int Tab::IconCapacity() const {
if (height() < GetMinimumUnselectedSize().height())
return 0;
const int available_width =
std::max(0, width() - kLeftPadding - kRightPadding);
const int width_per_icon = gfx::kFaviconSize;
const int kPaddingBetweenIcons = 2;
if (available_width >= width_per_icon &&
available_width < (width_per_icon + kPaddingBetweenIcons)) {
return 1;
}
return available_width / (width_per_icon + kPaddingBetweenIcons);
}
bool Tab::ShouldShowIcon() const {
return chrome::ShouldTabShowFavicon(
IconCapacity(), data().mini, IsActive(), data().show_icon,
media_indicator_button_ ? media_indicator_button_->showing_media_state() :
data_.media_state);
}
bool Tab::ShouldShowMediaIndicator() const {
return chrome::ShouldTabShowMediaIndicator(
IconCapacity(), data().mini, IsActive(), data().show_icon,
media_indicator_button_ ? media_indicator_button_->showing_media_state() :
data_.media_state);
}
bool Tab::ShouldShowCloseBox() const {
return chrome::ShouldTabShowCloseButton(
IconCapacity(), data().mini, IsActive());
}
double Tab::GetThrobValue() {
const bool is_selected = IsSelected();
const double min = is_selected ? kSelectedTabOpacity : 0;
const double scale = is_selected ? kSelectedTabThrobScale : 1;
// Showing both the pulse and title change animation at the same time is too
// much.
if (pulse_animation_ && pulse_animation_->is_animating() &&
(!mini_title_change_animation_ ||
!mini_title_change_animation_->is_animating())) {
return pulse_animation_->GetCurrentValue() * kHoverOpacity * scale + min;
}
if (hover_controller_.ShouldDraw()) {
return kHoverOpacity * hover_controller_.GetAnimationValue() * scale +
min;
}
return is_selected ? kSelectedTabOpacity : 0;
}
void Tab::SetFaviconHidingOffset(int offset) {
favicon_hiding_offset_ = offset;
ScheduleIconPaint();
}
void Tab::DisplayCrashedFavicon() {
should_display_crashed_favicon_ = true;
}
void Tab::ResetCrashedFavicon() {
should_display_crashed_favicon_ = false;
}
void Tab::StopCrashAnimation() {
crash_icon_animation_.reset();
}
void Tab::StartCrashAnimation() {
crash_icon_animation_.reset(new FaviconCrashAnimation(this));
crash_icon_animation_->Start();
}
bool Tab::IsPerformingCrashAnimation() const {
return crash_icon_animation_.get() && data_.IsCrashed();
}
void Tab::ScheduleIconPaint() {
gfx::Rect bounds = favicon_bounds_;
if (bounds.IsEmpty())
return;
// Extends the area to the bottom when sad_favicon is animating.
if (IsPerformingCrashAnimation())
bounds.set_height(height() - bounds.y());
bounds.set_x(GetMirroredXForRect(bounds));
SchedulePaintInRect(bounds);
}
gfx::Rect Tab::GetImmersiveBarRect() const {
// The main bar is as wide as the normal tab's horizontal top line.
// This top line of the tab extends a few pixels left and right of the
// center image due to pixels in the rounded corner images.
const int kBarPadding = 1;
int main_bar_left = tab_active_.l_width - kBarPadding;
int main_bar_right = width() - tab_active_.r_width + kBarPadding;
return gfx::Rect(
main_bar_left, 0, main_bar_right - main_bar_left, kImmersiveBarHeight);
}
void Tab::GetTabIdAndFrameId(views::Widget* widget,
int* tab_id,
int* frame_id) const {
if (widget &&
widget->GetTopLevelWidget()->ShouldWindowContentsBeTransparent()) {
*tab_id = IDR_THEME_TAB_BACKGROUND_V;
*frame_id = 0;
} else if (data().incognito) {
*tab_id = IDR_THEME_TAB_BACKGROUND_INCOGNITO;
*frame_id = IDR_THEME_FRAME_INCOGNITO;
} else {
*tab_id = IDR_THEME_TAB_BACKGROUND;
*frame_id = IDR_THEME_FRAME;
}
}
MediaIndicatorButton* Tab::GetMediaIndicatorButton() {
if (!media_indicator_button_) {
media_indicator_button_ = new MediaIndicatorButton();
AddChildView(media_indicator_button_); // Takes ownership.
}
return media_indicator_button_;
}
////////////////////////////////////////////////////////////////////////////////
// Tab, private static:
// static
void Tab::InitTabResources() {
static bool initialized = false;
if (initialized)
return;
initialized = true;
image_cache_ = new ImageCache();
// Load the tab images once now, and maybe again later if the theme changes.
LoadTabImages();
}
// static
void Tab::LoadTabImages() {
// We're not letting people override tab images just yet.
ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
tab_alpha_.image_l = rb.GetImageSkiaNamed(IDR_TAB_ALPHA_LEFT);
tab_alpha_.image_r = rb.GetImageSkiaNamed(IDR_TAB_ALPHA_RIGHT);
tab_active_.image_l = rb.GetImageSkiaNamed(IDR_TAB_ACTIVE_LEFT);
tab_active_.image_c = rb.GetImageSkiaNamed(IDR_TAB_ACTIVE_CENTER);
tab_active_.image_r = rb.GetImageSkiaNamed(IDR_TAB_ACTIVE_RIGHT);
tab_active_.l_width = tab_active_.image_l->width();
tab_active_.r_width = tab_active_.image_r->width();
tab_inactive_.image_l = rb.GetImageSkiaNamed(IDR_TAB_INACTIVE_LEFT);
tab_inactive_.image_c = rb.GetImageSkiaNamed(IDR_TAB_INACTIVE_CENTER);
tab_inactive_.image_r = rb.GetImageSkiaNamed(IDR_TAB_INACTIVE_RIGHT);
tab_inactive_.l_width = tab_inactive_.image_l->width();
tab_inactive_.r_width = tab_inactive_.image_r->width();
}
// static
gfx::ImageSkia Tab::GetCachedImage(int resource_id,
const gfx::Size& size,
ui::ScaleFactor scale_factor) {
for (ImageCache::const_iterator i = image_cache_->begin();
i != image_cache_->end(); ++i) {
if (i->resource_id == resource_id && i->scale_factor == scale_factor &&
i->image.size() == size) {
return i->image;
}
}
return gfx::ImageSkia();
}
// static
void Tab::SetCachedImage(int resource_id,
ui::ScaleFactor scale_factor,
const gfx::ImageSkia& image) {
DCHECK_NE(scale_factor, ui::SCALE_FACTOR_NONE);
ImageCacheEntry entry;
entry.resource_id = resource_id;
entry.scale_factor = scale_factor;
entry.image = image;
image_cache_->push_front(entry);
if (image_cache_->size() > kMaxImageCacheSize)
image_cache_->pop_back();
}