| // Copyright 2013 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_THEMES_CUSTOM_THEME_SUPPLIER_H_ |
| #define CHROME_BROWSER_THEMES_CUSTOM_THEME_SUPPLIER_H_ |
| |
| #include "base/macros.h" |
| #include "base/memory/ref_counted.h" |
| #include "base/memory/ref_counted_delete_on_sequence.h" |
| #include "content/public/browser/browser_thread.h" |
| #include "third_party/skia/include/core/SkColor.h" |
| #include "ui/base/layout.h" |
| |
| namespace base { |
| class RefCountedMemory; |
| } |
| |
| namespace color_utils { |
| struct HSL; |
| } |
| |
| namespace gfx { |
| class Image; |
| } |
| |
| // A representation of a theme. All theme properties can be accessed through the |
| // public methods. Subclasses are expected to override all methods which should |
| // provide non-default values. |
| class CustomThemeSupplier |
| : public base::RefCountedDeleteOnSequence<CustomThemeSupplier> { |
| public: |
| enum ThemeType { |
| EXTENSION, |
| NATIVE_X11, |
| SUPERVISED_USER_THEME, |
| }; |
| |
| explicit CustomThemeSupplier(ThemeType type); |
| |
| ThemeType get_theme_type() const { |
| return theme_type_; |
| } |
| |
| // Called when the theme starts being used. |
| virtual void StartUsingTheme(); |
| |
| // Called when the theme is not used anymore. |
| virtual void StopUsingTheme(); |
| |
| // If the theme specifies data for the corresponding |id|, returns true and |
| // writes the corresponding value to the output parameter. These methods |
| // should not return the default data. These methods should only be called |
| // from the UI thread. |
| virtual bool GetTint(int id, color_utils::HSL* hsl) const; |
| virtual bool GetColor(int id, SkColor* color) const; |
| virtual bool GetDisplayProperty(int id, int* result) const; |
| |
| // Returns the theme image for |id|. Returns an empty image if no image is |
| // found for |id|. |
| // TODO(estade): Remove this function; it's not used in Material Design. |
| virtual gfx::Image GetImageNamed(int id); |
| |
| // Returns the raw PNG encoded data for IDR_THEME_NTP_*. This method only |
| // works for the NTP attribution and background resources. |
| virtual base::RefCountedMemory* GetRawData( |
| int id, ui::ScaleFactor scale_factor) const; |
| |
| // Whether this theme provides an image for |id|. |
| virtual bool HasCustomImage(int id) const; |
| |
| protected: |
| virtual ~CustomThemeSupplier(); |
| |
| private: |
| friend class base::RefCountedDeleteOnSequence<CustomThemeSupplier>; |
| friend class base::DeleteHelper<CustomThemeSupplier>; |
| |
| ThemeType theme_type_; |
| |
| DISALLOW_COPY_AND_ASSIGN(CustomThemeSupplier); |
| }; |
| |
| #endif // CHROME_BROWSER_THEMES_CUSTOM_THEME_SUPPLIER_H_ |