| // Copyright 2013 The Chromium Authors |
| // 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/memory/ref_counted.h" |
| #include "base/strings/string_piece.h" |
| #include "extensions/common/extension_id.h" |
| #include "third_party/skia/include/core/SkColor.h" |
| #include "ui/base/resource/resource_scale_factor.h" |
| #include "ui/color/color_provider_key.h" |
| |
| namespace base { |
| class RefCountedMemory; |
| } |
| |
| namespace color_utils { |
| struct HSL; |
| } |
| |
| namespace gfx { |
| class Image; |
| } |
| |
| namespace ui { |
| class ColorProvider; |
| class NativeTheme; |
| } |
| |
| // 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 ui::ColorProviderKey::ThemeInitializerSupplier { |
| public: |
| using ThemeInitializerSupplier::ThemeInitializerSupplier; |
| CustomThemeSupplier(const CustomThemeSupplier&) = delete; |
| CustomThemeSupplier& operator=(const CustomThemeSupplier&) = delete; |
| |
| const std::string& extension_id() const { |
| DCHECK_EQ(get_theme_type(), ThemeType::kExtension); |
| return extension_id_; |
| } |
| |
| // 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. |
| bool GetTint(int id, color_utils::HSL* hsl) const override; |
| bool GetColor(int id, SkColor* color) const override; |
| bool GetDisplayProperty(int id, int* result) const override; |
| |
| // Returns the theme image for |id|. Returns an empty image if no image is |
| // found for |id|. |
| virtual gfx::Image GetImageNamed(int id) const; |
| |
| // 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::ResourceScaleFactor scale_factor) const; |
| |
| // Whether this theme provides an image for |id|. |
| bool HasCustomImage(int id) const override; |
| |
| // Returns whether or not the default incognito colors can be used with this |
| // theme. This is a workaround for the IncreasedContrastThemeSupplier that |
| // doesn't supply all the colors it should (http://crbug.com/1045630). |
| virtual bool CanUseIncognitoColors() const; |
| |
| // ui::ColorProviderKey::ThemeInitializerSupplier: |
| void AddColorMixers(ui::ColorProvider* provider, |
| const ui::ColorProviderKey& key) const override { |
| // TODO(pkasting): All classes that override GetColor() should override |
| // this. |
| } |
| |
| virtual ui::NativeTheme* GetNativeTheme() const; |
| |
| protected: |
| ~CustomThemeSupplier() override; |
| |
| void set_extension_id(base::StringPiece id) { |
| DCHECK_EQ(get_theme_type(), ThemeType::kExtension); |
| extension_id_ = id; |
| } |
| |
| private: |
| friend class base::RefCountedThreadSafe<CustomThemeSupplier>; |
| |
| extensions::ExtensionId extension_id_; |
| }; |
| |
| #endif // CHROME_BROWSER_THEMES_CUSTOM_THEME_SUPPLIER_H_ |