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// 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 <string_view>
#include "base/memory/ref_counted.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;
} // namespace ui
// 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(std::string_view 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_
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