Move chrome/browser/gtk to chrome/browser/ui/gtk

chrome/browser/ui/gtk/tabs/dragged_tab_gtk.h

+// Copyright (c) 2010 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_GTK_TABS_DRAGGED_TAB_GTK_H_
+#define CHROME_BROWSER_UI_GTK_TABS_DRAGGED_TAB_GTK_H_
+#pragma once
+
+#include <gtk/gtk.h>
+
+#include "base/callback.h"
+#include "base/scoped_ptr.h"
+#include "base/task.h"
+#include "gfx/canvas.h"
+#include "gfx/point.h"
+#include "gfx/rect.h"
+#include "gfx/size.h"
+#include "ui/base/animation/animation_delegate.h"
+#include "ui/base/animation/slide_animation.h"
+
+class TabContents;
+class TabRendererGtk;
+
+class DraggedTabGtk : public ui::AnimationDelegate {
+ public:
+  DraggedTabGtk(TabContents* datasource,
+                const gfx::Point& mouse_tab_offset,
+                const gfx::Size& contents_size,
+                bool mini);
+  virtual ~DraggedTabGtk();
+
+  // Moves the dragged tab to the appropriate location given the mouse
+  // pointer at |screen_point|.
+  void MoveTo(const gfx::Point& screen_point);
+
+  // Sets the offset of the mouse from the upper left corner of the tab.
+  void set_mouse_tab_offset(const gfx::Point& offset) {
+    mouse_tab_offset_ = offset;
+  }
+
+  // Notifies the dragged tab that it has become attached to a tabstrip.
+  void Attach(int selected_width);
+
+  // Resizes the dragged tab to a width of |width|.
+  void Resize(int width);
+
+  // Notifies the dragged tab that it has been detached from a tabstrip.
+  void Detach();
+
+  // Notifies the dragged tab that it should update itself.
+  void Update();
+
+  // Animates the dragged tab to the specified bounds, then calls back to
+  // |callback|.
+  typedef Callback0::Type AnimateToBoundsCallback;
+  void AnimateToBounds(const gfx::Rect& bounds,
+                       AnimateToBoundsCallback* callback);
+
+  // Returns the size of the dragged tab. Used when attaching to a tabstrip
+  // to determine where to place the tab in the attached tabstrip.
+  const gfx::Size& attached_tab_size() const { return attached_tab_size_; }
+
+  GtkWidget* widget() const { return container_; }
+
+ private:
+  // Overridden from ui::AnimationDelegate:
+  virtual void AnimationProgressed(const ui::Animation* animation);
+  virtual void AnimationEnded(const ui::Animation* animation);
+  virtual void AnimationCanceled(const ui::Animation* animation);
+
+  // Arranges the contents of the dragged tab.
+  void Layout();
+
+  // Gets the preferred size of the dragged tab.
+  gfx::Size GetPreferredSize();
+
+  // Resizes the container to fit the content for the current attachment mode.
+  void ResizeContainer();
+
+  // Utility for scaling a size by the current scaling factor.
+  int ScaleValue(int value);
+
+  // Returns the bounds of the container window.
+  gfx::Rect bounds() const;
+
+  // Sets the color map of the container window to allow the window to be
+  // transparent.
+  void SetContainerColorMap();
+
+  // Sets full transparency for the container window.  This is used if
+  // compositing is available for the screen.
+  void SetContainerTransparency();
+
+  // Sets the shape mask for the container window to emulate a transparent
+  // container window.  This is used if compositing is not available for the
+  // screen.
+  // |surface| represents the tab only (not the render view).
+  void SetContainerShapeMask(cairo_surface_t* surface);
+
+  // expose-event handler that notifies when the tab needs to be redrawn.
+  static gboolean OnExposeEvent(GtkWidget* widget, GdkEventExpose* event,
+                                DraggedTabGtk* dragged_tab);
+
+  // The tab contents that the dragged tab contains.
+  TabContents* data_source_;
+
+  // The window that contains the dragged tab or tab contents.
+  GtkWidget* container_;
+
+  // The fixed widget that we use to contain the tab renderer so that the
+  // tab widget won't be resized.
+  GtkWidget* fixed_;
+
+  // The renderer that paints the dragged tab.
+  scoped_ptr<TabRendererGtk> renderer_;
+
+  // True if the view is currently attached to a tabstrip. Controls rendering
+  // and sizing modes.
+  bool attached_;
+
+  // The unscaled offset of the mouse from the top left of the dragged tab.
+  // This is used to maintain an appropriate offset for the mouse pointer when
+  // dragging scaled and unscaled representations, and also to calculate the
+  // position of detached windows.
+  gfx::Point mouse_tab_offset_;
+
+  // The size of the tab renderer when the dragged tab is attached to a
+  // tabstrip.
+  gfx::Size attached_tab_size_;
+
+  // The dimensions of the TabContents being dragged.
+  gfx::Size contents_size_;
+
+  // The animation used to slide the attached tab to its final location.
+  ui::SlideAnimation close_animation_;
+
+  // A callback notified when the animation is complete.
+  scoped_ptr<Callback0::Type> animation_callback_;
+
+  // The start and end bounds of the animation sequence.
+  gfx::Rect animation_start_bounds_;
+  gfx::Rect animation_end_bounds_;
+
+  DISALLOW_COPY_AND_ASSIGN(DraggedTabGtk);
+};
+
+#endif  // CHROME_BROWSER_UI_GTK_TABS_DRAGGED_TAB_GTK_H_