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| 1 // Copyright (c) 2012 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 UI_BASE_THEME_PROVIDER_H_ | |
| 6 #define UI_BASE_THEME_PROVIDER_H_ | |
| 7 | |
| 8 #include "base/basictypes.h" | |
| 9 #include "third_party/skia/include/core/SkColor.h" | |
| 10 #include "ui/base/layout.h" | |
| 11 #include "ui/base/ui_base_export.h" | |
| 12 | |
| 13 #if defined(OS_MACOSX) | |
| 14 #ifdef __OBJC__ | |
| 15 @class NSColor; | |
| 16 @class NSGradient; | |
| 17 @class NSImage; | |
| 18 #else | |
| 19 class NSColor; | |
| 20 class NSGradient; | |
| 21 class NSImage; | |
| 22 #endif // __OBJC__ | |
| 23 #endif // OS_* | |
| 24 | |
| 25 class SkBitmap; | |
| 26 | |
| 27 namespace base { | |
| 28 class RefCountedMemory; | |
| 29 } | |
| 30 | |
| 31 namespace gfx { | |
| 32 class ImageSkia; | |
| 33 } | |
| 34 | |
| 35 namespace ui { | |
| 36 | |
| 37 //////////////////////////////////////////////////////////////////////////////// | |
| 38 // | |
| 39 // ThemeProvider | |
| 40 // | |
| 41 // ThemeProvider is an abstract class that defines the API that should be | |
| 42 // implemented to provide bitmaps and color information for a given theme. | |
| 43 // | |
| 44 //////////////////////////////////////////////////////////////////////////////// | |
| 45 | |
| 46 class UI_BASE_EXPORT ThemeProvider { | |
| 47 public: | |
| 48 virtual ~ThemeProvider(); | |
| 49 | |
| 50 // Whether we're using the system theme (which may or may not be the | |
| 51 // same as the default theme). | |
| 52 virtual bool UsingSystemTheme() const = 0; | |
| 53 | |
| 54 // Get the image specified by |id|. An implementation of ThemeProvider should | |
| 55 // have its own source of ids (e.g. an enum, or external resource bundle). | |
| 56 virtual gfx::ImageSkia* GetImageSkiaNamed(int id) const = 0; | |
| 57 | |
| 58 // Get the color specified by |id|. | |
| 59 virtual SkColor GetColor(int id) const = 0; | |
| 60 | |
| 61 // Get the property (e.g. an alignment expressed in an enum, or a width or | |
| 62 // height) specified by |id|. | |
| 63 virtual int GetDisplayProperty(int id) const = 0; | |
| 64 | |
| 65 // Whether we should use the native system frame (typically Aero glass) or | |
| 66 // a custom frame. | |
| 67 virtual bool ShouldUseNativeFrame() const = 0; | |
| 68 | |
| 69 // Whether or not we have a certain image. Used for when the default theme | |
| 70 // doesn't provide a certain image, but custom themes might (badges, etc). | |
| 71 virtual bool HasCustomImage(int id) const = 0; | |
| 72 | |
| 73 // Reads the image data from the theme file into the specified vector. Only | |
| 74 // valid for un-themed resources and the themed IDR_THEME_NTP_* in most | |
| 75 // implementations of ThemeProvider. Returns NULL on error. | |
| 76 virtual base::RefCountedMemory* GetRawData( | |
| 77 int id, | |
| 78 ui::ScaleFactor scale_factor) const = 0; | |
| 79 | |
| 80 #if defined(OS_MACOSX) | |
| 81 // Gets the NSImage with the specified |id|. | |
| 82 virtual NSImage* GetNSImageNamed(int id) const = 0; | |
| 83 | |
| 84 // Gets the NSImage that GetNSImageNamed (above) would return, but returns it | |
| 85 // as a pattern color. | |
| 86 virtual NSColor* GetNSImageColorNamed(int id) const = 0; | |
| 87 | |
| 88 // Gets the NSColor with the specified |id|. | |
| 89 virtual NSColor* GetNSColor(int id) const = 0; | |
| 90 | |
| 91 // Gets the NSColor for tinting with the specified |id|. | |
| 92 virtual NSColor* GetNSColorTint(int id) const = 0; | |
| 93 | |
| 94 // Gets the NSGradient with the specified |id|. | |
| 95 virtual NSGradient* GetNSGradient(int id) const = 0; | |
| 96 #endif | |
| 97 }; | |
| 98 | |
| 99 } // namespace ui | |
| 100 | |
| 101 #endif // UI_BASE_THEME_PROVIDER_H_ | |
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