Implements a zoom icon in the Omnibox for Views.

chrome/browser/ui/views/location_bar/zoom_view.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_LOCATION_BAR_ZOOM_VIEW_H_
+#define CHROME_BROWSER_UI_VIEWS_LOCATION_BAR_ZOOM_VIEW_H_
+#pragma once
+
+#include "base/basictypes.h"
+#include "chrome/browser/ui/toolbar/toolbar_model.h"
+#include "chrome/browser/ui/zoom/zoom_controller.h"
+#include "ui/views/controls/image_view.h"
+
+namespace views {
+class KeyEvent;
+class MouseEvent;
+}
+
+// View for the zoom icon in the Omnibox.
+class ZoomView : public views::ImageView {
+ public:
+  explicit ZoomView(ToolbarModel* toolbar_model);
+  virtual ~ZoomView();
+
+  void SetZoomIconState(ZoomController::ZoomIconState zoom_icon_state);
+  void SetZoomIconTooltipPercent(int zoom_percent);
+
+  // Updates the image and its tooltip appropriately, hiding or showing the icon
+  // as needed.
+  void Update();
+
+ private:
+  // views::ImageView:
+  virtual void GetAccessibleState(ui::AccessibleViewState* state) OVERRIDE;
+  virtual bool GetTooltipText(const gfx::Point& p,
+                              string16* tooltip) const OVERRIDE;
+  virtual bool OnMousePressed(const views::MouseEvent& event) OVERRIDE;
+  virtual void OnMouseReleased(const views::MouseEvent& event) OVERRIDE;
+  virtual bool OnKeyPressed(const views::KeyEvent& event) OVERRIDE;
+
+  // Toolbar model used to test whether location bar input is in progress.
+  ToolbarModel* toolbar_model_;
+
+  // The current icon state.
+  ZoomController::ZoomIconState zoom_icon_state_;
+
+  // The current zoom percentage.
+  int zoom_percent_;
+
+  DISALLOW_COPY_AND_ASSIGN(ZoomView);
+};
+
+#endif  // CHROME_BROWSER_UI_VIEWS_LOCATION_BAR_ZOOM_VIEW_H_