Reland: Use labels to display views tab titles.

chrome/browser/ui/views/tabs/tab.h

Index: chrome/browser/ui/views/tabs/tab.h
diff --git a/chrome/browser/ui/views/tabs/tab.h b/chrome/browser/ui/views/tabs/tab.h
index d5b71cdef3c8f3104d686a13cadec324f0df8aa8..349c7707f6410ee42d06b3ffc5e68578ef936a54 100644
--- a/chrome/browser/ui/views/tabs/tab.h
+++ b/chrome/browser/ui/views/tabs/tab.h
@@ -1,378 +1,370 @@
-// 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.
-
-#ifndef CHROME_BROWSER_UI_VIEWS_TABS_TAB_H_
-#define CHROME_BROWSER_UI_VIEWS_TABS_TAB_H_
-
-#include <list>
-#include <string>
-
-#include "base/memory/ref_counted.h"
-#include "base/memory/scoped_ptr.h"
-#include "chrome/browser/ui/views/tabs/tab_renderer_data.h"
-#include "ui/base/layout.h"
-#include "ui/gfx/animation/animation_delegate.h"
-#include "ui/gfx/point.h"
-#include "ui/views/context_menu_controller.h"
-#include "ui/views/controls/button/button.h"
-#include "ui/views/controls/glow_hover_controller.h"
-#include "ui/views/view.h"
-
-class TabController;
-
-namespace gfx {
-class Animation;
-class AnimationContainer;
-class Font;
-class LinearAnimation;
-class MultiAnimation;
-}
-namespace views {
-class ImageButton;
-}
-
-///////////////////////////////////////////////////////////////////////////////
-//
-//  A View that renders a Tab in a TabStrip.
-//
-///////////////////////////////////////////////////////////////////////////////
-class Tab : public gfx::AnimationDelegate,
-            public views::ButtonListener,
-            public views::ContextMenuController,
-            public views::View {
- public:
-  // The menu button's class name.
-  static const char kViewClassName[];
-
-  explicit Tab(TabController* controller);
-  virtual ~Tab();
-
-  // Used to set/check whether this Tab is being animated closed.
-  void set_closing(bool closing) { closing_ = closing; }
-  bool closing() const { return closing_; }
-
-  // See description above field.
-  void set_dragging(bool dragging) { dragging_ = dragging; }
-  bool dragging() const { return dragging_; }
-
-  // Sets the container all animations run from.
-  void set_animation_container(gfx::AnimationContainer* container);
-
-  // Returns true if this tab is the active tab.
-  bool IsActive() const;
-
-  // Returns true if the tab is selected.
-  bool IsSelected() const;
-
-  // Sets the data this tabs displays. Invokes DataChanged.
-  void SetData(const TabRendererData& data);
-  const TabRendererData& data() const { return data_; }
-
-  // Sets the network state. If the network state changes NetworkStateChanged is
-  // invoked.
-  void UpdateLoadingAnimation(TabRendererData::NetworkState state);
-
-  // Starts/Stops a pulse animation.
-  void StartPulse();
-  void StopPulse();
-
-  // Start/stop the mini-tab title animation.
-  void StartMiniTabTitleAnimation();
-  void StopMiniTabTitleAnimation();
-
-  // Set the background offset used to match the image in the inactive tab
-  // to the frame image.
-  void set_background_offset(const gfx::Point& offset) {
-    background_offset_ = offset;
-  }
-
-  // Returns true if this tab became the active tab selected in
-  // response to the last ui::ET_GESTURE_BEGIN gesture dispatched to
-  // this tab. Only used for collecting UMA metrics.
-  // See ash/touch/touch_uma.cc.
-  bool tab_activated_with_last_gesture_begin() const {
-    return tab_activated_with_last_gesture_begin_;
-  }
-
-  views::GlowHoverController* hover_controller() {
-    return &hover_controller_;
-  }
-
-  // Returns the minimum possible size of a single unselected Tab.
-  static gfx::Size GetMinimumUnselectedSize();
-  // Returns the minimum possible size of a selected Tab. Selected tabs must
-  // always show a close button and have a larger minimum size than unselected
-  // tabs.
-  static gfx::Size GetMinimumSelectedSize();
-  // Returns the preferred size of a single Tab, assuming space is
-  // available.
-  static gfx::Size GetStandardSize();
-
-  // Returns the width for touch tabs.
-  static int GetTouchWidth();
-
-  // Returns the width for mini-tabs. Mini-tabs always have this width.
-  static int GetMiniWidth();
-
-  // Returns the height for immersive mode tabs.
-  static int GetImmersiveHeight();
-
- private:
-  friend class TabTest;
-  FRIEND_TEST_ALL_PREFIXES(TabTest, CloseButtonLayout);
-
-  friend class TabStripTest;
-  FRIEND_TEST_ALL_PREFIXES(TabStripTest, TabHitTestMaskWhenStacked);
-  FRIEND_TEST_ALL_PREFIXES(TabStripTest, ClippedTabCloseButton);
-
-  // The animation object used to swap the favicon with the sad tab icon.
-  class FaviconCrashAnimation;
-  class TabCloseButton;
-
-  // Contains a cached image and the values used to generate it.
-  struct ImageCacheEntry {
-    ImageCacheEntry();
-    ~ImageCacheEntry();
-
-    // ID of the resource used.
-    int resource_id;
-
-    // Scale factor we're drawing it.
-    ui::ScaleFactor scale_factor;
-
-    // The image.
-    gfx::ImageSkia image;
-  };
-
-  typedef std::list<ImageCacheEntry> ImageCache;
-
-  // Overridden from gfx::AnimationDelegate:
-  virtual void AnimationProgressed(const gfx::Animation* animation) OVERRIDE;
-  virtual void AnimationCanceled(const gfx::Animation* animation) OVERRIDE;
-  virtual void AnimationEnded(const gfx::Animation* animation) OVERRIDE;
-
-  // Overridden from views::ButtonListener:
-  virtual void ButtonPressed(views::Button* sender,
-                             const ui::Event& event) OVERRIDE;
-
-  // Overridden from views::ContextMenuController:
-  virtual void ShowContextMenuForView(views::View* source,
-                                      const gfx::Point& point,
-                                      ui::MenuSourceType source_type) OVERRIDE;
-
-  // Overridden from views::View:
-  virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE;
-  virtual void Layout() OVERRIDE;
-  virtual void OnThemeChanged() OVERRIDE;
-  virtual const char* GetClassName() const OVERRIDE;
-  virtual bool HasHitTestMask() const OVERRIDE;
-  virtual void GetHitTestMask(HitTestSource source,
-                              gfx::Path* path) const OVERRIDE;
-  virtual bool GetTooltipText(const gfx::Point& p,
-                              base::string16* tooltip) const OVERRIDE;
-  virtual bool GetTooltipTextOrigin(const gfx::Point& p,
-                                    gfx::Point* origin) const OVERRIDE;
-  virtual bool OnMousePressed(const ui::MouseEvent& event) OVERRIDE;
-  virtual bool OnMouseDragged(const ui::MouseEvent& event) OVERRIDE;
-  virtual void OnMouseReleased(const ui::MouseEvent& event) OVERRIDE;
-  virtual void OnMouseCaptureLost() OVERRIDE;
-  virtual void OnMouseEntered(const ui::MouseEvent& event) OVERRIDE;
-  virtual void OnMouseMoved(const ui::MouseEvent& event) OVERRIDE;
-  virtual void OnMouseExited(const ui::MouseEvent& event) OVERRIDE;
-  virtual void GetAccessibleState(ui::AXViewState* state) OVERRIDE;
-
-  // Overridden from ui::EventHandler:
-  virtual void OnGestureEvent(ui::GestureEvent* event) OVERRIDE;
-
-  // Returns the bounds of the title and icon.
-  const gfx::Rect& GetTitleBounds() const;
-  const gfx::Rect& GetIconBounds() const;
-
-  // Invoked from Layout to adjust the position of the favicon or media
-  // indicator for mini tabs.
-  void MaybeAdjustLeftForMiniTab(gfx::Rect* bounds) const;
-
-  // Invoked from SetData after |data_| has been updated to the new data.
-  void DataChanged(const TabRendererData& old);
-
-  // Paint with the normal tab style.
-  void PaintTab(gfx::Canvas* canvas);
-
-  // Paint with the "immersive mode" light-bar style.
-  void PaintImmersiveTab(gfx::Canvas* canvas);
-
-  // Paint various portions of the Tab
-  void PaintTabBackground(gfx::Canvas* canvas);
-  void PaintInactiveTabBackgroundWithTitleChange(
-      gfx::Canvas* canvas,
-      gfx::MultiAnimation* animation);
-  void PaintInactiveTabBackground(gfx::Canvas* canvas);
-  void PaintInactiveTabBackgroundUsingResourceId(gfx::Canvas* canvas,
-                                                 int tab_id);
-  void PaintActiveTabBackground(gfx::Canvas* canvas);
-
-  // Paints the favicon, media indicator icon, etc., mirrored for RTL if needed.
-  void PaintIcon(gfx::Canvas* canvas);
-  void PaintMediaIndicator(gfx::Canvas* canvas);
-  void PaintTitle(gfx::Canvas* canvas, SkColor title_color);
-
-  // Invoked if data_.network_state changes, or the network_state is not none.
-  void AdvanceLoadingAnimation(TabRendererData::NetworkState old_state,
-                               TabRendererData::NetworkState state);
-
-  // Returns the number of favicon-size elements that can fit in the tab's
-  // current size.
-  int IconCapacity() const;
-
-  // Returns whether the Tab should display a favicon.
-  bool ShouldShowIcon() const;
-
-  // Returns whether the Tab should display the media indicator.
-  bool ShouldShowMediaIndicator() const;
-
-  // Returns whether the Tab should display a close button.
-  bool ShouldShowCloseBox() const;
-
-  // Gets the throb value for the tab. When a tab is not selected the
-  // active background is drawn at |GetThrobValue()|%. This is used for hover,
-  // mini tab title change and pulsing.
-  double GetThrobValue();
-
-  // Set the temporary offset for the favicon. This is used during the crash
-  // animation.
-  void SetFaviconHidingOffset(int offset);
-
-  void DisplayCrashedFavicon();
-  void ResetCrashedFavicon();
-
-  void StopCrashAnimation();
-  void StartCrashAnimation();
-
-  // Returns true if the crash animation is currently running.
-  bool IsPerformingCrashAnimation() const;
-
-  // Starts the media indicator fade-in/out animation. There's no stop method
-  // because this is not a continuous animation.
-  void StartMediaIndicatorAnimation();
-
-  // Schedules repaint task for icon.
-  void ScheduleIconPaint();
-
-  // Returns the rectangle for the light bar in immersive mode.
-  gfx::Rect GetImmersiveBarRect() const;
-
-  // Gets the tab id and frame id.
-  void GetTabIdAndFrameId(views::Widget* widget,
-                          int* tab_id,
-                          int* frame_id) const;
-
-  // Performs a one-time initialization of static resources such as tab images.
-  static void InitTabResources();
-
-  // Returns the minimum possible size of a single unselected Tab, not
-  // including considering touch mode.
-  static gfx::Size GetBasicMinimumUnselectedSize();
-
-  // Loads the images to be used for the tab background.
-  static void LoadTabImages();
-
-  // Returns the cached image for the specified arguments, or an empty image if
-  // there isn't one cached.
-  static gfx::ImageSkia GetCachedImage(int resource_id,
-                                       const gfx::Size& size,
-                                       ui::ScaleFactor scale_factor);
-
-  // Caches the specified image.
-  static void SetCachedImage(int resource_id,
-                             ui::ScaleFactor scale_factor,
-                             const gfx::ImageSkia& image);
-
-  // The controller, never NULL.
-  TabController* controller_;
-
-  TabRendererData data_;
-
-  // True if the tab is being animated closed.
-  bool closing_;
-
-  // True if the tab is being dragged.
-  bool dragging_;
-
-  // The offset used to animate the favicon location. This is used when the tab
-  // crashes.
-  int favicon_hiding_offset_;
-
-  // The current index of the loading animation. The range varies depending on
-  // whether the tab is loading or waiting, see AdvanceLoadingAnimation().
-  int loading_animation_frame_;
-
-  // Step in the immersive loading progress indicator.
-  int immersive_loading_step_;
-
-  bool should_display_crashed_favicon_;
-
-  // Whole-tab throbbing "pulse" animation.
-  scoped_ptr<gfx::Animation> tab_animation_;
-
-  // Crash icon animation (in place of favicon).
-  scoped_ptr<gfx::LinearAnimation> crash_icon_animation_;
-
-  // Media indicator fade-in/out animation (i.e., only on show/hide, not a
-  // continuous animation).
-  scoped_ptr<gfx::Animation> media_indicator_animation_;
-  TabMediaState animating_media_state_;
-
-  scoped_refptr<gfx::AnimationContainer> animation_container_;
-
-  views::ImageButton* close_button_;
-
-  bool tab_activated_with_last_gesture_begin_;
-
-  views::GlowHoverController hover_controller_;
-
-  // The bounds of various sections of the display.
-  gfx::Rect favicon_bounds_;
-  gfx::Rect title_bounds_;
-  gfx::Rect media_indicator_bounds_;
-
-  // The offset used to paint the inactive background image.
-  gfx::Point background_offset_;
-
-  struct TabImage {
-    gfx::ImageSkia* image_l;
-    gfx::ImageSkia* image_c;
-    gfx::ImageSkia* image_r;
-    int l_width;
-    int r_width;
-  };
-  static TabImage tab_active_;
-  static TabImage tab_inactive_;
-  static TabImage tab_alpha_;
-
-  // Whether we're showing the icon. It is cached so that we can detect when it
-  // changes and layout appropriately.
-  bool showing_icon_;
-
-  // Whether we're showing the media indicator. It is cached so that we can
-  // detect when it changes and layout appropriately.
-  bool showing_media_indicator_;
-
-  // Whether we are showing the close button. It is cached so that we can
-  // detect when it changes and layout appropriately.
-  bool showing_close_button_;
-
-  // The current color of the close button.
-  SkColor close_button_color_;
-
-  static gfx::Font* font_;
-  static int font_height_;
-
-  // As the majority of the tabs are inactive, and painting tabs is slowish,
-  // we cache a handful of the inactive tab backgrounds here.
-  static ImageCache* image_cache_;
-
-  DISALLOW_COPY_AND_ASSIGN(Tab);
-};
-
-#endif  // CHROME_BROWSER_UI_VIEWS_TABS_TAB_H_
+// 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.
+
+#ifndef CHROME_BROWSER_UI_VIEWS_TABS_TAB_H_
+#define CHROME_BROWSER_UI_VIEWS_TABS_TAB_H_
+
+#include <list>
+#include <string>
+
+#include "base/memory/ref_counted.h"
+#include "base/memory/scoped_ptr.h"
+#include "chrome/browser/ui/views/tabs/tab_renderer_data.h"
+#include "ui/base/layout.h"
+#include "ui/gfx/animation/animation_delegate.h"
+#include "ui/gfx/point.h"
+#include "ui/views/context_menu_controller.h"
+#include "ui/views/controls/button/button.h"
+#include "ui/views/controls/glow_hover_controller.h"
+#include "ui/views/view.h"
+
+class TabController;
+
+namespace gfx {
+class Animation;
+class AnimationContainer;
+class LinearAnimation;
+class MultiAnimation;
+}
+namespace views {
+class ImageButton;
+class Label;
+}
+
+///////////////////////////////////////////////////////////////////////////////
+//
+//  A View that renders a Tab in a TabStrip.
+//
+///////////////////////////////////////////////////////////////////////////////
+class Tab : public gfx::AnimationDelegate,
+            public views::ButtonListener,
+            public views::ContextMenuController,
+            public views::View {
+ public:
+  // The menu button's class name.
+  static const char kViewClassName[];
+
+  explicit Tab(TabController* controller);
+  virtual ~Tab();
+
+  // Used to set/check whether this Tab is being animated closed.
+  void set_closing(bool closing) { closing_ = closing; }
+  bool closing() const { return closing_; }
+
+  // See description above field.
+  void set_dragging(bool dragging) { dragging_ = dragging; }
+  bool dragging() const { return dragging_; }
+
+  // Sets the container all animations run from.
+  void set_animation_container(gfx::AnimationContainer* container);
+
+  // Returns true if this tab is the active tab.
+  bool IsActive() const;
+
+  // Returns true if the tab is selected.
+  bool IsSelected() const;
+
+  // Sets the data this tabs displays. Invokes DataChanged.
+  void SetData(const TabRendererData& data);
+  const TabRendererData& data() const { return data_; }
+
+  // Sets the network state. If the network state changes NetworkStateChanged is
+  // invoked.
+  void UpdateLoadingAnimation(TabRendererData::NetworkState state);
+
+  // Starts/Stops a pulse animation.
+  void StartPulse();
+  void StopPulse();
+
+  // Start/stop the mini-tab title animation.
+  void StartMiniTabTitleAnimation();
+  void StopMiniTabTitleAnimation();
+
+  // Set the background offset used to match the image in the inactive tab
+  // to the frame image.
+  void set_background_offset(const gfx::Point& offset) {
+    background_offset_ = offset;
+  }
+
+  // Returns true if this tab became the active tab selected in
+  // response to the last ui::ET_GESTURE_BEGIN gesture dispatched to
+  // this tab. Only used for collecting UMA metrics.
+  // See ash/touch/touch_uma.cc.
+  bool tab_activated_with_last_gesture_begin() const {
+    return tab_activated_with_last_gesture_begin_;
+  }
+
+  views::GlowHoverController* hover_controller() {
+    return &hover_controller_;
+  }
+
+  // Returns the minimum possible size of a single unselected Tab.
+  static gfx::Size GetMinimumUnselectedSize();
+  // Returns the minimum possible size of a selected Tab. Selected tabs must
+  // always show a close button and have a larger minimum size than unselected
+  // tabs.
+  static gfx::Size GetMinimumSelectedSize();
+  // Returns the preferred size of a single Tab, assuming space is
+  // available.
+  static gfx::Size GetStandardSize();
+
+  // Returns the width for touch tabs.
+  static int GetTouchWidth();
+
+  // Returns the width for mini-tabs. Mini-tabs always have this width.
+  static int GetMiniWidth();
+
+  // Returns the height for immersive mode tabs.
+  static int GetImmersiveHeight();
+
+ private:
+  friend class TabTest;
+  FRIEND_TEST_ALL_PREFIXES(TabTest, CloseButtonLayout);
+
+  friend class TabStripTest;
+  FRIEND_TEST_ALL_PREFIXES(TabStripTest, TabHitTestMaskWhenStacked);
+  FRIEND_TEST_ALL_PREFIXES(TabStripTest, ClippedTabCloseButton);
+
+  // The animation object used to swap the favicon with the sad tab icon.
+  class FaviconCrashAnimation;
+  class TabCloseButton;
+
+  // Contains a cached image and the values used to generate it.
+  struct ImageCacheEntry {
+    ImageCacheEntry();
+    ~ImageCacheEntry();
+
+    // ID of the resource used.
+    int resource_id;
+
+    // Scale factor we're drawing it.
+    ui::ScaleFactor scale_factor;
+
+    // The image.
+    gfx::ImageSkia image;
+  };
+
+  typedef std::list<ImageCacheEntry> ImageCache;
+
+  // Overridden from gfx::AnimationDelegate:
+  virtual void AnimationProgressed(const gfx::Animation* animation) OVERRIDE;
+  virtual void AnimationCanceled(const gfx::Animation* animation) OVERRIDE;
+  virtual void AnimationEnded(const gfx::Animation* animation) OVERRIDE;
+
+  // Overridden from views::ButtonListener:
+  virtual void ButtonPressed(views::Button* sender,
+                             const ui::Event& event) OVERRIDE;
+
+  // Overridden from views::ContextMenuController:
+  virtual void ShowContextMenuForView(views::View* source,
+                                      const gfx::Point& point,
+                                      ui::MenuSourceType source_type) OVERRIDE;
+
+  // Overridden from views::View:
+  virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE;
+  virtual void Layout() OVERRIDE;
+  virtual void OnThemeChanged() OVERRIDE;
+  virtual const char* GetClassName() const OVERRIDE;
+  virtual bool HasHitTestMask() const OVERRIDE;
+  virtual void GetHitTestMask(HitTestSource source,
+                              gfx::Path* path) const OVERRIDE;
+  virtual bool GetTooltipText(const gfx::Point& p,
+                              base::string16* tooltip) const OVERRIDE;
+  virtual bool GetTooltipTextOrigin(const gfx::Point& p,
+                                    gfx::Point* origin) const OVERRIDE;
+  virtual bool OnMousePressed(const ui::MouseEvent& event) OVERRIDE;
+  virtual bool OnMouseDragged(const ui::MouseEvent& event) OVERRIDE;
+  virtual void OnMouseReleased(const ui::MouseEvent& event) OVERRIDE;
+  virtual void OnMouseCaptureLost() OVERRIDE;
+  virtual void OnMouseEntered(const ui::MouseEvent& event) OVERRIDE;
+  virtual void OnMouseMoved(const ui::MouseEvent& event) OVERRIDE;
+  virtual void OnMouseExited(const ui::MouseEvent& event) OVERRIDE;
+  virtual void GetAccessibleState(ui::AXViewState* state) OVERRIDE;
+
+  // Overridden from ui::EventHandler:
+  virtual void OnGestureEvent(ui::GestureEvent* event) OVERRIDE;
+
+  // Invoked from Layout to adjust the position of the favicon or media
+  // indicator for mini tabs.
+  void MaybeAdjustLeftForMiniTab(gfx::Rect* bounds) const;
+
+  // Invoked from SetData after |data_| has been updated to the new data.
+  void DataChanged(const TabRendererData& old);
+
+  // Paint with the normal tab style.
+  void PaintTab(gfx::Canvas* canvas);
+
+  // Paint with the "immersive mode" light-bar style.
+  void PaintImmersiveTab(gfx::Canvas* canvas);
+
+  // Paint various portions of the Tab
+  void PaintTabBackground(gfx::Canvas* canvas);
+  void PaintInactiveTabBackgroundWithTitleChange(
+      gfx::Canvas* canvas,
+      gfx::MultiAnimation* animation);
+  void PaintInactiveTabBackground(gfx::Canvas* canvas);
+  void PaintInactiveTabBackgroundUsingResourceId(gfx::Canvas* canvas,
+                                                 int tab_id);
+  void PaintActiveTabBackground(gfx::Canvas* canvas);
+
+  // Paints the favicon and media indicator icon, mirrored for RTL if needed.
+  void PaintIcon(gfx::Canvas* canvas);
+  void PaintMediaIndicator(gfx::Canvas* canvas);
+
+  // Invoked if data_.network_state changes, or the network_state is not none.
+  void AdvanceLoadingAnimation(TabRendererData::NetworkState old_state,
+                               TabRendererData::NetworkState state);
+
+  // Returns the number of favicon-size elements that can fit in the tab's
+  // current size.
+  int IconCapacity() const;
+
+  // Returns whether the Tab should display a favicon.
+  bool ShouldShowIcon() const;
+
+  // Returns whether the Tab should display the media indicator.
+  bool ShouldShowMediaIndicator() const;
+
+  // Returns whether the Tab should display a close button.
+  bool ShouldShowCloseBox() const;
+
+  // Gets the throb value for the tab. When a tab is not selected the
+  // active background is drawn at |GetThrobValue()|%. This is used for hover,
+  // mini tab title change and pulsing.
+  double GetThrobValue();
+
+  // Set the temporary offset for the favicon. This is used during the crash
+  // animation.
+  void SetFaviconHidingOffset(int offset);
+
+  void DisplayCrashedFavicon();
+  void ResetCrashedFavicon();
+
+  void StopCrashAnimation();
+  void StartCrashAnimation();
+
+  // Returns true if the crash animation is currently running.
+  bool IsPerformingCrashAnimation() const;
+
+  // Starts the media indicator fade-in/out animation. There's no stop method
+  // because this is not a continuous animation.
+  void StartMediaIndicatorAnimation();
+
+  // Schedules repaint task for icon.
+  void ScheduleIconPaint();
+
+  // Returns the rectangle for the light bar in immersive mode.
+  gfx::Rect GetImmersiveBarRect() const;
+
+  // Gets the tab id and frame id.
+  void GetTabIdAndFrameId(views::Widget* widget,
+                          int* tab_id,
+                          int* frame_id) const;
+
+  // Performs a one-time initialization of static resources such as tab images.
+  static void InitTabResources();
+
+  // Returns the minimum possible size of a single unselected Tab, not
+  // including considering touch mode.
+  static gfx::Size GetBasicMinimumUnselectedSize();
+
+  // Loads the images to be used for the tab background.
+  static void LoadTabImages();
+
+  // Returns the cached image for the specified arguments, or an empty image if
+  // there isn't one cached.
+  static gfx::ImageSkia GetCachedImage(int resource_id,
+                                       const gfx::Size& size,
+                                       ui::ScaleFactor scale_factor);
+
+  // Caches the specified image.
+  static void SetCachedImage(int resource_id,
+                             ui::ScaleFactor scale_factor,
+                             const gfx::ImageSkia& image);
+
+  // The controller, never NULL.
+  TabController* controller_;
+
+  TabRendererData data_;
+
+  // True if the tab is being animated closed.
+  bool closing_;
+
+  // True if the tab is being dragged.
+  bool dragging_;
+
+  // The offset used to animate the favicon location. This is used when the tab
+  // crashes.
+  int favicon_hiding_offset_;
+
+  // The current index of the loading animation. The range varies depending on
+  // whether the tab is loading or waiting, see AdvanceLoadingAnimation().
+  int loading_animation_frame_;
+
+  // Step in the immersive loading progress indicator.
+  int immersive_loading_step_;
+
+  bool should_display_crashed_favicon_;
+
+  // Whole-tab throbbing "pulse" animation.
+  scoped_ptr<gfx::Animation> tab_animation_;
+
+  // Crash icon animation (in place of favicon).
+  scoped_ptr<gfx::LinearAnimation> crash_icon_animation_;
+
+  // Media indicator fade-in/out animation (i.e., only on show/hide, not a
+  // continuous animation).
+  scoped_ptr<gfx::Animation> media_indicator_animation_;
+  TabMediaState animating_media_state_;
+
+  scoped_refptr<gfx::AnimationContainer> animation_container_;
+
+  views::ImageButton* close_button_;
+  views::Label* title_;
+
+  bool tab_activated_with_last_gesture_begin_;
+
+  views::GlowHoverController hover_controller_;
+
+  // The bounds of various sections of the display.
+  gfx::Rect favicon_bounds_;
+  gfx::Rect media_indicator_bounds_;
+
+  // The offset used to paint the inactive background image.
+  gfx::Point background_offset_;
+
+  struct TabImage {
+    gfx::ImageSkia* image_l;
+    gfx::ImageSkia* image_c;
+    gfx::ImageSkia* image_r;
+    int l_width;
+    int r_width;
+  };
+  static TabImage tab_active_;
+  static TabImage tab_inactive_;
+  static TabImage tab_alpha_;
+
+  // Whether we're showing the icon. It is cached so that we can detect when it
+  // changes and layout appropriately.
+  bool showing_icon_;
+
+  // Whether we're showing the media indicator. It is cached so that we can
+  // detect when it changes and layout appropriately.
+  bool showing_media_indicator_;
+
+  // Whether we are showing the close button. It is cached so that we can
+  // detect when it changes and layout appropriately.
+  bool showing_close_button_;
+
+  // The current color of the close button.
+  SkColor close_button_color_;
+
+  // As the majority of the tabs are inactive, and painting tabs is slowish,
+  // we cache a handful of the inactive tab backgrounds here.
+  static ImageCache* image_cache_;
+
+  DISALLOW_COPY_AND_ASSIGN(Tab);
+};
+
+#endif  // CHROME_BROWSER_UI_VIEWS_TABS_TAB_H_