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      1 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef CHROME_BROWSER_CHROMEOS_LOGIN_USERNAME_VIEW_H_
      6 #define CHROME_BROWSER_CHROMEOS_LOGIN_USERNAME_VIEW_H_
      7 #pragma once
      8 
      9 #include <string>
     10 
     11 #include "views/controls/label.h"
     12 #include "third_party/skia/include/core/SkBitmap.h"
     13 
     14 // Forward declaration.
     15 namespace gfx {
     16   class Rect;
     17 }
     18 
     19 namespace chromeos {
     20 // Label with customized paddings and long text fade out.
     21 class UsernameView : public views::Label {
     22  public:
     23   virtual ~UsernameView() {}
     24 
     25   // Returns the shaped username view to be used on the login screen. If
     26   // |user_small_shape| is true, then one pixel margins are used. This is done
     27   // to match the shape of the scaled frame of the user image. The caller gets
     28   // the ownership.
     29   // Empty |username| stands for guest user.
     30   static UsernameView* CreateShapedUsernameView(const std::wstring& username,
     31                                                 bool use_small_shape);
     32 
     33  protected:
     34   // Constructs username view for the given |username|. Consider using
     35   // |CreateShapedUsernameView| to match the login page style.
     36   // Empty |username| stands for guest user.
     37   UsernameView(const std::wstring& username, bool use_small_shape);
     38 
     39   // Overriden from views::Label.
     40   virtual void OnPaint(gfx::Canvas* canvas);
     41 
     42   // True indicates that this UsernameView is used for a user pod not
     43   // currently selected.
     44   bool use_small_shape() const { return use_small_shape_; }
     45 
     46  private:
     47   // Overriden from View.
     48   virtual gfx::NativeCursor GetCursorForPoint(
     49       ui::EventType event_type,
     50       const gfx::Point& p);
     51   virtual void OnLocaleChanged();
     52 
     53   // Paints username to the bitmap with the bounds given.
     54   void PaintUsername(const gfx::Rect& bounds);
     55 
     56   // Holds painted username.
     57   scoped_ptr<SkBitmap> text_image_;
     58 
     59   // Holds margins width (depends on the height).
     60   int margin_width_;
     61 
     62   // Whether the shape for the smaller view should be used.
     63   bool use_small_shape_;
     64 
     65   // Whether it is a guest.
     66   bool is_guest_;
     67 
     68   DISALLOW_COPY_AND_ASSIGN(UsernameView);
     69 };
     70 
     71 }  // namespace chromeos
     72 
     73 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_USERNAME_VIEW_H_
     74