// 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/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 "grit/generated_resources.h"
#include "grit/theme_resources.h"
#include "grit/ui_resources.h"
#include "third_party/skia/include/effects/SkGradientShader.h"
#include "ui/base/accessibility/accessible_view_state.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/base/layout.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/font.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/gfx/text_elider.h"
#include "ui/views/border.h"
#include "ui/views/controls/button/image_button.h"
#include "ui/views/rect_based_targeting_utils.h"
#include "ui/views/widget/tooltip_manager.h"
#include "ui/views/widget/widget.h"
#include "ui/views/window/non_client_view.h"
#if defined(OS_WIN)
#include "win8/util/win8_util.h"
#endif
#if defined(USE_ASH)
#include "ui/aura/env.h"
#endif
namespace {
// Padding around the "content" of a tab, occupied by the tab border graphics.
int left_padding() {
static int value = -1;
if (value == -1) {
switch (ui::GetDisplayLayout()) {
case ui::LAYOUT_DESKTOP:
value = 22;
break;
case ui::LAYOUT_TOUCH:
value = 30;
break;
default:
NOTREACHED();
}
}
return value;
}
int top_padding() {
static int value = -1;
if (value == -1) {
switch (ui::GetDisplayLayout()) {
case ui::LAYOUT_DESKTOP:
value = 7;
break;
case ui::LAYOUT_TOUCH:
value = 10;
break;
default:
NOTREACHED();
}
}
return value;
}
int right_padding() {
static int value = -1;
if (value == -1) {
switch (ui::GetDisplayLayout()) {
case ui::LAYOUT_DESKTOP:
value = 17;
break;
case ui::LAYOUT_TOUCH:
value = 21;
break;
default:
NOTREACHED();
}
}
return value;
}
int bottom_padding() {
static int value = -1;
if (value == -1) {
switch (ui::GetDisplayLayout()) {
case ui::LAYOUT_DESKTOP:
value = 5;
break;
case ui::LAYOUT_TOUCH:
value = 7;
break;
default:
NOTREACHED();
}
}
return value;
}
// Height of the shadow at the top of the tab image assets.
int drop_shadow_height() {
static int value = -1;
if (value == -1) {
switch (ui::GetDisplayLayout()) {
case ui::LAYOUT_DESKTOP:
value = 4;
break;
case ui::LAYOUT_TOUCH:
value = 5;
break;
default:
NOTREACHED();
}
}
return value;
}
// Size of icon used for throbber and favicon next to tab title.
int tab_icon_size() {
static int value = -1;
if (value == -1) {
switch (ui::GetDisplayLayout()) {
case ui::LAYOUT_DESKTOP:
value = gfx::kFaviconSize;
break;
case ui::LAYOUT_TOUCH:
value = 20;
break;
default:
NOTREACHED();
}
}
return value;
}
// 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;
// Additional vertical offset for title text relative to top of tab.
// Ash text rendering may be different than Windows.
static const int kTitleTextOffsetYAsh = 1;
static const int kTitleTextOffsetY = 0;
static const int kTitleCloseButtonSpacing = 3;
static const int kStandardTitleWidth = 175;
// Additional vertical offset for close button relative to top of tab.
// Ash needs this to match the text vertical position.
static const int kCloseButtonVertFuzzAsh = 1;
static const int kCloseButtonVertFuzz = 0;
// Additional horizontal offset for close button relative to title text.
static const int kCloseButtonHorzFuzz = 3;
// 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);
}
} // 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:
explicit TabCloseButton(Tab* tab) : views::ImageButton(tab), tab_(tab) {}
virtual ~TabCloseButton() {}
// Overridden from views::View.
virtual View* GetEventHandlerForRect(const gfx::Rect& rect) OVERRIDE {
if (!views::UsePointBasedTargeting(rect))
return View::GetEventHandlerForRect(rect);
// Ignore the padding set on the button.
gfx::Rect contents_bounds = GetContentsBounds();
contents_bounds.set_x(GetMirroredXForRect(contents_bounds));
// TODO(tdanderson): Remove this ifdef if rect-based targeting
// is turned on by default.
#if defined(USE_ASH)
// Include the padding in hit-test for touch events.
if (aura::Env::GetInstance()->is_touch_down())
contents_bounds = GetLocalBounds();
#elif defined(OS_WIN)
// TODO(sky): Use local-bounds if a touch-point is active.
// http://crbug.com/145258
#endif
return contents_bounds.Intersects(rect) ? this : parent();
}
// Overridden from 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 {
if (tab_->controller())
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 {
if (tab_->controller())
tab_->controller()->OnMouseEventInTab(this, event);
CustomButton::OnMouseMoved(event);
}
virtual void OnMouseReleased(const ui::MouseEvent& event) OVERRIDE {
if (tab_->controller())
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 bool HasHitTestMask() const OVERRIDE {
return true;
}
virtual void GetHitTestMask(HitTestSource source,
gfx::Path* path) const OVERRIDE {
// Use the button's contents bounds (which does not include padding)
// and the hit test mask of our parent |tab_| to determine if the
// button is hidden behind another tab.
gfx::Path tab_mask;
tab_->GetHitTestMask(source, &tab_mask);
gfx::Rect button_bounds(GetContentsBounds());
button_bounds.set_x(GetMirroredXForRect(button_bounds));
gfx::RectF tab_bounds_f(gfx::SkRectToRectF(tab_mask.getBounds()));
views::View::ConvertRectToTarget(tab_, this, &tab_bounds_f);
gfx::Rect tab_bounds = gfx::ToEnclosingRect(tab_bounds_f);
// If either the top or bottom of the tab close button is clipped,
// do not consider these regions to be part of the button's 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);
// If the hit test request is in response to a gesture, |path| should be
// empty unless the entire tab close button is visible to the user. Hit
// test requests in response to a mouse event should always set |path|
// to be the visible portion of the tab close button, even if it is
// partially hidden behind another tab.
path->reset();
gfx::Rect intersection(gfx::IntersectRects(tab_bounds, button_bounds));
if (!intersection.IsEmpty()) {
// TODO(tdanderson): Consider always returning the intersection if
// the non-rectangular shape of the tabs can be accounted for.
if (source == HIT_TEST_SOURCE_TOUCH &&
!tab_bounds.Contains(button_bounds))
return;
path->addRect(RectToSkRect(intersection));
}
}
virtual const char* GetClassName() const OVERRIDE {
return kTabCloseButtonName;
}
private:
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";
// static
Tab::TabImage Tab::tab_alpha_ = {0};
Tab::TabImage Tab::tab_active_ = {0};
Tab::TabImage Tab::tab_inactive_ = {0};
// static
gfx::Font* Tab::font_ = NULL;
// static
int Tab::font_height_ = 0;
// static
Tab::ImageCache* Tab::image_cache_ = NULL;
////////////////////////////////////////////////////////////////////////////////
// Tab, public:
Tab::Tab(TabController* controller)
: controller_(controller),
closing_(false),
dragging_(false),
favicon_hiding_offset_(0),
loading_animation_frame_(0),
immersive_loading_step_(0),
should_display_crashed_favicon_(false),
animating_media_state_(TAB_MEDIA_STATE_NONE),
theme_provider_(NULL),
tab_activated_with_last_gesture_begin_(false),
hover_controller_(this),
showing_icon_(false),
showing_media_indicator_(false),
showing_close_button_(false),
close_button_color_(0) {
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);
// 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() ? controller()->IsActiveTab(this) : true;
}
bool Tab::IsSelected() const {
return controller() ? controller()->IsTabSelected(this) : true;
}
void Tab::SetData(const TabRendererData& data) {
if (data_.Equals(data))
return;
TabRendererData old(data_);
data_ = data;
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) {
if (data_.media_state != TAB_MEDIA_STATE_NONE)
animating_media_state_ = data_.media_state;
StartMediaIndicatorAnimation();
}
if (old.mini != data_.mini) {
if (tab_animation_.get() && tab_animation_->is_animating()) {
tab_animation_->Stop();
tab_animation_.reset(NULL);
}
}
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() {
gfx::ThrobAnimation* animation = new gfx::ThrobAnimation(this);
animation->SetSlideDuration(kPulseDurationMs);
if (animation_container_.get())
animation->SetContainer(animation_container_.get());
animation->StartThrobbing(std::numeric_limits<int>::max());
tab_animation_.reset(animation);
}
void Tab::StopPulse() {
if (!tab_animation_.get())
return;
tab_animation_->Stop();
tab_animation_.reset(NULL);
}
void Tab::StartMiniTabTitleAnimation() {
// We can only do this animation if the tab is mini because we will
// upcast tab_animation back to MultiAnimation when we draw.
if (!data().mini)
return;
if (!tab_animation_.get()) {
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);
gfx::MultiAnimation* animation = new gfx::MultiAnimation(parts, timeout);
if (animation_container_.get())
animation->SetContainer(animation_container_.get());
animation->set_delegate(this);
tab_animation_.reset(animation);
}
tab_animation_->Start();
}
void Tab::StopMiniTabTitleAnimation() {
if (!tab_animation_.get())
return;
tab_animation_->Stop();
tab_animation_.reset(NULL);
}
// static
gfx::Size Tab::GetBasicMinimumUnselectedSize() {
InitTabResources();
gfx::Size minimum_size;
minimum_size.set_width(left_padding() + right_padding());
// 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(
left_padding() + gfx::kFaviconSize + right_padding());
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 == tab_animation_.get() && IsActive())
return;
SchedulePaint();
}
void Tab::AnimationCanceled(const gfx::Animation* animation) {
if (media_indicator_animation_ == animation)
animating_media_state_ = data_.media_state;
SchedulePaint();
}
void Tab::AnimationEnded(const gfx::Animation* animation) {
if (media_indicator_animation_ == animation)
animating_media_state_ = data_.media_state;
SchedulePaint();
}
////////////////////////////////////////////////////////////////////////////////
// Tab, views::ButtonListener overrides:
void Tab::ButtonPressed(views::Button* sender, const ui::Event& event) {
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 (controller() && !closing())
controller()->ShowContextMenuForTab(this, point, source_type);
}
////////////////////////////////////////////////////////////////////////////////
// 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()) {
if (!controller()->ShouldPaintTab(this, &clip))
return;
if (!clip.IsEmpty()) {
canvas->Save();
canvas->ClipRect(clip);
}
}
if (controller() && 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(
left_padding(), top_padding(), right_padding(), bottom_padding());
// The height of the content of the Tab is the largest of the favicon,
// the title text and the close button graphic.
int content_height = std::max(tab_icon_size(), font_height_);
close_button_->set_border(NULL);
gfx::Size close_button_size(close_button_->GetPreferredSize());
content_height = std::max(content_height, close_button_size.height());
// Size the Favicon.
showing_icon_ = ShouldShowIcon();
if (showing_icon_) {
// Use the size of the favicon as apps use a bigger favicon size.
int favicon_top = top_padding() + content_height / 2 - tab_icon_size() / 2;
int favicon_left = lb.x();
favicon_bounds_.SetRect(favicon_left, favicon_top,
tab_icon_size(), tab_icon_size());
MaybeAdjustLeftForMiniTab(&favicon_bounds_);
} else {
favicon_bounds_.SetRect(lb.x(), lb.y(), 0, 0);
}
// Size the Close button.
showing_close_button_ = ShouldShowCloseBox();
const bool is_host_desktop_type_ash =
GetHostDesktopType(this) == chrome::HOST_DESKTOP_TYPE_ASH;
if (showing_close_button_) {
const int close_button_vert_fuzz = is_host_desktop_type_ash ?
kCloseButtonVertFuzzAsh : kCloseButtonVertFuzz;
int close_button_top = top_padding() + close_button_vert_fuzz +
(content_height - close_button_size.height()) / 2;
// 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.
int top_border = close_button_top;
int bottom_border = height() - (close_button_size.height() + top_border);
int left_border = kCloseButtonHorzFuzz;
int right_border = width() - (lb.width() + close_button_size.width() +
left_border);
close_button_->set_border(views::Border::CreateEmptyBorder(top_border,
left_border, bottom_border, right_border));
close_button_->SetPosition(gfx::Point(lb.width(), 0));
close_button_->SizeToPreferredSize();
close_button_->SetVisible(true);
} else {
close_button_->SetBounds(0, 0, 0, 0);
close_button_->SetVisible(false);
}
showing_media_indicator_ = ShouldShowMediaIndicator();
if (showing_media_indicator_) {
const gfx::Image& media_indicator_image =
chrome::GetTabMediaIndicatorImage(animating_media_state_);
media_indicator_bounds_.set_width(media_indicator_image.Width());
media_indicator_bounds_.set_height(media_indicator_image.Height());
media_indicator_bounds_.set_y(
top_padding() +
(content_height - media_indicator_bounds_.height()) / 2);
const int right = showing_close_button_ ?
close_button_->x() + close_button_->GetInsets().left() : lb.right();
media_indicator_bounds_.set_x(
std::max(lb.x(), right - media_indicator_bounds_.width()));
MaybeAdjustLeftForMiniTab(&media_indicator_bounds_);
} else {
media_indicator_bounds_.SetRect(lb.x(), lb.y(), 0, 0);
}
const int title_text_offset = is_host_desktop_type_ash ?
kTitleTextOffsetYAsh : kTitleTextOffsetY;
int title_left = favicon_bounds_.right() + kFaviconTitleSpacing;
int title_top = top_padding() + title_text_offset +
(content_height - font_height_) / 2;
// Size the Title text to fill the remaining space.
if (!data().mini || width() >= kMiniTabRendererAsNormalTabWidth) {
// If the user has big fonts, the title will appear rendered too far down
// on the y-axis if we use the regular top padding, so we need to adjust it
// so that the text appears centered.
gfx::Size minimum_size = GetMinimumUnselectedSize();
int text_height = title_top + font_height_ + bottom_padding();
if (text_height > minimum_size.height())
title_top -= (text_height - minimum_size.height()) / 2;
int title_width;
if (showing_media_indicator_) {
title_width = media_indicator_bounds_.x() - kTitleCloseButtonSpacing -
title_left;
} else if (close_button_->visible()) {
// The close button has an empty border with some padding (see details
// above where the close-button's bounds is set). Allow the title to
// overlap the empty padding.
title_width = close_button_->x() + close_button_->GetInsets().left() -
kTitleCloseButtonSpacing - title_left;
} else {
title_width = lb.width() - title_left;
}
title_width = std::max(title_width, 0);
title_bounds_.SetRect(title_left, title_top, title_width, font_height_);
} else {
title_bounds_.SetRect(title_left, title_top, 0, 0);
}
// Certain UI elements within the Tab (the favicon, etc.) are not represented
// as child Views (which is the preferred method). Instead, these UI elements
// are drawn directly on the canvas from within Tab::OnPaint(). The Tab's
// child Views (for example, the Tab's close button which is a views::Button
// instance) are automatically mirrored by the mirroring infrastructure in
// views. The elements Tab draws directly on the canvas need to be manually
// mirrored if the View's layout is right-to-left.
title_bounds_.set_x(GetMirroredXForRect(title_bounds_));
}
void Tab::OnThemeChanged() {
LoadTabImages();
}
const char* Tab::GetClassName() const {
return kViewClassName;
}
bool Tab::HasHitTestMask() const {
return true;
}
void Tab::GetHitTestMask(HitTestSource source, gfx::Path* path) const {
// 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, path);
// 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.
if (controller()) {
gfx::Rect clip;
controller()->ShouldPaintTab(this, &clip);
if (clip.size().GetArea()) {
SkRect intersection(path->getBounds());
intersection.intersect(RectToSkRect(clip));
path->reset();
path->addRect(intersection);
}
}
}
bool Tab::GetTooltipText(const gfx::Point& p, base::string16* tooltip) const {
// TODO(miu): Rectify inconsistent tooltip behavior. http://crbug.com/310947
if (data_.media_state != TAB_MEDIA_STATE_NONE) {
*tooltip = chrome::AssembleTabTooltipText(data_.title, data_.media_state);
return true;
}
if (data_.title.empty())
return false;
// Only show the tooltip if the title is truncated.
if (font_->GetStringWidth(data_.title) > GetTitleBounds().width()) {
*tooltip = data_.title;
return true;
}
return false;
}
bool Tab::GetTooltipTextOrigin(const gfx::Point& p, gfx::Point* origin) const {
origin->set_x(title_bounds_.x() + 10);
origin->set_y(-views::TooltipManager::GetTooltipHeight() - 4);
return true;
}
ui::ThemeProvider* Tab::GetThemeProvider() const {
ui::ThemeProvider* tp = View::GetThemeProvider();
return tp ? tp : theme_provider_;
}
bool Tab::OnMousePressed(const ui::MouseEvent& event) {
if (!controller())
return false;
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) {
if (controller())
controller()->ContinueDrag(this, event);
return true;
}
void Tab::OnMouseReleased(const ui::MouseEvent& event) {
if (!controller())
return;
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);
}
}
void Tab::OnMouseCaptureLost() {
if (controller())
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());
if (controller())
controller()->OnMouseEventInTab(this, event);
}
void Tab::OnMouseExited(const ui::MouseEvent& event) {
hover_controller_.Hide();
}
void Tab::OnGestureEvent(ui::GestureEvent* event) {
if (!controller()) {
event->SetHandled();
return;
}
switch (event->type()) {
case ui::ET_GESTURE_BEGIN: {
if (event->details().touch_points() != 1)
return;
// 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_gesture_begin_ = !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::AccessibleViewState* state) {
state->role = ui::AccessibilityTypes::ROLE_PAGETAB;
state->name = data_.title;
}
////////////////////////////////////////////////////////////////////////////////
// Tab, private
const gfx::Rect& Tab::GetTitleBounds() const {
return title_bounds_;
}
const gfx::Rect& Tab::GetIconBounds() const {
return favicon_bounds_;
}
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().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);
SkColor title_color = GetThemeProvider()->
GetColor(IsSelected() ?
ThemeProperties::COLOR_TAB_TEXT :
ThemeProperties::COLOR_BACKGROUND_TAB_TEXT);
if (!data().mini || width() > kMiniTabRendererAsNormalTabWidth)
PaintTitle(canvas, title_color);
if (show_icon)
PaintIcon(canvas);
if (show_media_indicator)
PaintMediaIndicator(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 (tab_animation_ &&
tab_animation_->is_animating() &&
!data().mini) {
alpha = tab_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 (tab_animation_.get() &&
tab_animation_->is_animating() &&
data().mini) {
gfx::MultiAnimation* animation =
static_cast<gfx::MultiAnimation*>(tab_animation_.get());
PaintInactiveTabBackgroundWithTitleChange(canvas, animation);
} 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,
gfx::MultiAnimation* animation) {
// 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 (animation->current_part_index() == 0) {
x = animation->CurrentValueBetween(x0, x1);
} else if (animation->current_part_index() == 1) {
x = x1;
} else {
x = 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 (animation->current_part_index() == 2) {
uint8 alpha = 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 + drop_shadow_height(),
tab_image->l_width,
drop_shadow_height(),
width() - tab_image->l_width - tab_image->r_width,
height() - drop_shadow_height() - 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,
drop_shadow_height(),
tab_image->l_width,
drop_shadow_height(),
width() - tab_image->l_width - tab_image->r_width,
height() - drop_shadow_height());
// 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 = GetIconBounds();
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::PaintMediaIndicator(gfx::Canvas* canvas) {
if (media_indicator_bounds_.IsEmpty() || !media_indicator_animation_)
return;
gfx::Rect bounds = media_indicator_bounds_;
bounds.set_x(GetMirroredXForRect(bounds));
SkPaint paint;
paint.setAntiAlias(true);
double opaqueness = media_indicator_animation_->GetCurrentValue();
if (data_.media_state == TAB_MEDIA_STATE_NONE)
opaqueness = 1.0 - opaqueness; // Fading out, not in.
paint.setAlpha(opaqueness * SK_AlphaOPAQUE);
const gfx::ImageSkia& media_indicator_image =
*(chrome::GetTabMediaIndicatorImage(animating_media_state_).
ToImageSkia());
DrawIconAtLocation(canvas, media_indicator_image, 0,
bounds.x(), bounds.y(), media_indicator_image.width(),
media_indicator_image.height(), true, paint);
}
void Tab::PaintTitle(gfx::Canvas* canvas, SkColor title_color) {
// Paint the Title.
base::string16 title = data().title;
if (title.empty()) {
title = data().loading ?
l10n_util::GetStringUTF16(IDS_TAB_LOADING_TITLE) :
CoreTabHelper::GetDefaultTitle();
} else {
Browser::FormatTitleForDisplay(&title);
}
canvas->DrawFadeTruncatingStringRect(title, gfx::Canvas::TruncateFadeTail,
gfx::FontList(*font_), title_color, GetTitleBounds());
}
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() && controller()->IsImmersiveStyle())
SchedulePaintInRect(GetImmersiveBarRect());
else
ScheduleIconPaint();
}
int Tab::IconCapacity() const {
if (height() < GetMinimumUnselectedSize().height())
return 0;
const int available_width =
std::max(0, width() - left_padding() - right_padding());
const int width_per_icon = tab_icon_size();
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,
animating_media_state_);
}
bool Tab::ShouldShowMediaIndicator() const {
return chrome::ShouldTabShowMediaIndicator(
IconCapacity(), data().mini, IsActive(), data().show_icon,
animating_media_state_);
}
bool Tab::ShouldShowCloseBox() const {
return chrome::ShouldTabShowCloseButton(
IconCapacity(), data().mini, IsActive());
}
double Tab::GetThrobValue() {
bool is_selected = IsSelected();
double min = is_selected ? kSelectedTabOpacity : 0;
double scale = is_selected ? kSelectedTabThrobScale : 1;
if (!data().mini) {
if (tab_animation_.get() && tab_animation_->is_animating())
return tab_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::StartMediaIndicatorAnimation() {
media_indicator_animation_ =
chrome::CreateTabMediaIndicatorFadeAnimation(data_.media_state);
media_indicator_animation_->set_delegate(this);
media_indicator_animation_->Start();
}
void Tab::ScheduleIconPaint() {
gfx::Rect bounds = GetIconBounds();
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()->ShouldUseNativeFrame()) {
*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;
#if defined(OS_WIN)
} else if (win8::IsSingleWindowMetroMode()) {
*tab_id = IDR_THEME_TAB_BACKGROUND_V;
*frame_id = 0;
#endif
} else {
*tab_id = IDR_THEME_TAB_BACKGROUND;
*frame_id = IDR_THEME_FRAME;
}
}
////////////////////////////////////////////////////////////////////////////////
// Tab, private static:
// static
void Tab::InitTabResources() {
static bool initialized = false;
if (initialized)
return;
initialized = true;
ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
font_ = new gfx::Font(rb.GetFont(ui::ResourceBundle::BaseFont));
font_height_ = font_->GetHeight();
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();
}