Merge Chromium src@r53293

Change-Id: Ia79acf8670f385cee48c45b0a75371d8e950af34

1 files changed, 102 insertions, 0 deletions

diff --git a/chrome/browser/views/tabs/dragged_tab_view.h b/chrome/browser/views/tabs/dragged_tab_view.h
new file mode 100644
index 0000000..f2ded5a
--- /dev/null
+++ b/chrome/browser/views/tabs/dragged_tab_view.h
@@ -0,0 +1,102 @@
+// 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_VIEWS_TABS_DRAGGED_TAB_VIEW_H_
+#define CHROME_BROWSER_VIEWS_TABS_DRAGGED_TAB_VIEW_H_
+
+#include "build/build_config.h"
+#include "gfx/point.h"
+#include "gfx/size.h"
+#include "views/view.h"
+
+namespace views {
+#if defined(OS_WIN)
+class WidgetWin;
+#elif defined(OS_LINUX)
+class WidgetGtk;
+#endif
+}
+namespace gfx {
+class Point;
+}
+class NativeViewPhotobooth;
+class Tab;
+class TabRenderer;
+
+class DraggedTabView : public views::View {
+ public:
+  // Creates a new DraggedTabView using |renderer| as the View. DraggedTabView
+  // takes ownership of |renderer|.
+  DraggedTabView(views::View* renderer,
+                 const gfx::Point& mouse_tab_offset,
+                 const gfx::Size& contents_size,
+                 const gfx::Size& min_size);
+  virtual ~DraggedTabView();
+
+  // Moves the DraggedTabView 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;
+  }
+
+  // Sets the width of the dragged tab and updates the dragged image.
+  void SetTabWidthAndUpdate(int width, NativeViewPhotobooth* photobooth);
+
+  // Notifies the DraggedTabView that it should update itself.
+  void Update();
+
+ private:
+  // Overridden from views::View:
+  virtual void Paint(gfx::Canvas* canvas);
+  virtual void Layout();
+  virtual gfx::Size GetPreferredSize();
+
+  // Paint the view, when it's not attached to any TabStrip.
+  void PaintDetachedView(gfx::Canvas* canvas);
+
+  // Paint the view, when "Show window contents while dragging" is disabled.
+  void PaintFocusRect(gfx::Canvas* canvas);
+
+  // 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);
+
+  // The window that contains the DraggedTabView.
+#if defined(OS_WIN)
+  scoped_ptr<views::WidgetWin> container_;
+#elif defined(OS_LINUX)
+  scoped_ptr<views::WidgetGtk> container_;
+#endif
+
+  // The renderer that paints the Tab shape.
+  scoped_ptr<views::View> renderer_;
+
+  // True if "Show window contents while dragging" is enabled.
+  bool show_contents_on_drag_;
+
+  // 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.
+  gfx::Size tab_size_;
+
+  // A handle to the DIB containing the current screenshot of the TabContents
+  // we are dragging.
+  NativeViewPhotobooth* photobooth_;
+
+  // Size of the TabContents being dragged.
+  gfx::Size contents_size_;
+
+  DISALLOW_COPY_AND_ASSIGN(DraggedTabView);
+};
+
+#endif  // CHROME_BROWSER_VIEWS_TABS_DRAGGED_TAB_VIEW_H_