wrench_icon_painter.h revision d0247b1b59f9c528cb6df88b4f2b9afaf80d181e 
1// Copyright (c) 2013 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_UI_TOOLBAR_WRENCH_ICON_PAINTER_H_
6#define CHROME_BROWSER_UI_TOOLBAR_WRENCH_ICON_PAINTER_H_
7
8#include "base/compiler_specific.h"
9#include "base/gtest_prod_util.h"
10#include "base/memory/scoped_ptr.h"
11#include "chrome/browser/ui/global_error/global_error.h"
12#include "chrome/browser/upgrade_detector.h"
13#include "ui/gfx/animation/animation_delegate.h"
14#include "ui/gfx/image/image_skia.h"
15
16namespace gfx {
17class Canvas;
18class MultiAnimation;
19class Rect;
20}
21namespace ui {
22class ThemeProvider;
23}
24
25// This class is used to draw the wrench icon. It can signify severity levels
26// by changing the wrench icon to different colors.
27class WrenchIconPainter : gfx::AnimationDelegate {
28 public:
29  enum BezelType {
30    BEZEL_NONE,
31    BEZEL_HOVER,
32    BEZEL_PRESSED,
33  };
34
35  enum Severity {
36    SEVERITY_NONE,
37    SEVERITY_LOW,
38    SEVERITY_MEDIUM,
39    SEVERITY_HIGH,
40  };
41
42  class Delegate {
43   public:
44    virtual void ScheduleWrenchIconPaint() = 0;
45   protected:
46    virtual ~Delegate() {}
47  };
48
49  // Map an upgrade level to a severity level.
50  static Severity SeverityFromUpgradeLevel(
51      UpgradeDetector::UpgradeNotificationAnnoyanceLevel level);
52
53  // Checks if the wrench icon should be animated for the given upgrade level.
54  static bool ShouldAnimateUpgradeLevel(
55      UpgradeDetector::UpgradeNotificationAnnoyanceLevel level);
56
57  // Get the severity level for global errors.
58  static Severity GlobalErrorSeverity();
59
60  explicit WrenchIconPainter(Delegate* delegate);
61  virtual ~WrenchIconPainter();
62
63  // If |severity| is not |SEVERITY_NONE| then the wrench icon is colored to
64  // match the severity level.
65  void SetSeverity(Severity severity, bool animate);
66
67  // A badge drawn on the top left.
68  void set_badge(const gfx::ImageSkia& badge) { badge_ = badge; }
69
70  void Paint(gfx::Canvas* canvas,
71             ui::ThemeProvider* theme_provider,
72             const gfx::Rect& rect,
73             BezelType bezel_type);
74
75 private:
76  FRIEND_TEST_ALL_PREFIXES(WrenchIconPainterTest, PaintCallback);
77
78  // AnimationDelegate:
79  virtual void AnimationProgressed(const gfx::Animation* animation) OVERRIDE;
80
81  // Gets the image ID used to draw bars for the current severity level.
82  int GetCurrentSeverityImageID() const;
83
84  Delegate* delegate_;
85  Severity severity_;
86  gfx::ImageSkia badge_;
87  scoped_ptr<gfx::MultiAnimation> animation_;
88
89  DISALLOW_COPY_AND_ASSIGN(WrenchIconPainter);
90};
91
92#endif  // CHROME_BROWSER_UI_TOOLBAR_WRENCH_ICON_PAINTER_H_
93