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      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 "ui/gfx/animation/animation_delegate.h"
     12 #include "ui/gfx/image/image_skia.h"
     13 
     14 namespace gfx {
     15 class Canvas;
     16 class MultiAnimation;
     17 class Rect;
     18 }
     19 namespace ui {
     20 class ThemeProvider;
     21 }
     22 
     23 // This class is used to draw the wrench icon. It can signify severity levels
     24 // by changing the wrench icon to different colors.
     25 class WrenchIconPainter : gfx::AnimationDelegate {
     26  public:
     27   enum BezelType {
     28     BEZEL_NONE,
     29     BEZEL_HOVER,
     30     BEZEL_PRESSED,
     31   };
     32 
     33   enum Severity {
     34     SEVERITY_NONE,
     35     SEVERITY_LOW,
     36     SEVERITY_MEDIUM,
     37     SEVERITY_HIGH,
     38   };
     39 
     40   class Delegate {
     41    public:
     42     virtual void ScheduleWrenchIconPaint() = 0;
     43    protected:
     44     virtual ~Delegate() {}
     45   };
     46 
     47   explicit WrenchIconPainter(Delegate* delegate);
     48   virtual ~WrenchIconPainter();
     49 
     50   // If |severity| is not |SEVERITY_NONE| then the wrench icon is colored to
     51   // match the severity level.
     52   void SetSeverity(Severity severity, bool animate);
     53 
     54   // A badge drawn on the top left.
     55   void set_badge(const gfx::ImageSkia& badge) { badge_ = badge; }
     56 
     57   void Paint(gfx::Canvas* canvas,
     58              ui::ThemeProvider* theme_provider,
     59              const gfx::Rect& rect,
     60              BezelType bezel_type);
     61 
     62  private:
     63   FRIEND_TEST_ALL_PREFIXES(WrenchIconPainterTest, PaintCallback);
     64 
     65   // AnimationDelegate:
     66   virtual void AnimationProgressed(const gfx::Animation* animation) OVERRIDE;
     67 
     68   // Gets the image ID used to draw bars for the current severity level.
     69   int GetCurrentSeverityImageID() const;
     70 
     71   Delegate* delegate_;
     72   Severity severity_;
     73   gfx::ImageSkia badge_;
     74   scoped_ptr<gfx::MultiAnimation> animation_;
     75 
     76   DISALLOW_COPY_AND_ASSIGN(WrenchIconPainter);
     77 };
     78 
     79 #endif  // CHROME_BROWSER_UI_TOOLBAR_WRENCH_ICON_PAINTER_H_
     80