blob: a6f21729980f9cdffcb45cf05a365729a27e30e9 [file] [log] [blame]
// 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.
#include "base/memory/ref_counted.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::RefCountedThreadSafe<
CustomThemeSupplier, content::BrowserThread::DeleteOnFileThread> {
enum ThemeType {
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|.
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;
virtual ~CustomThemeSupplier();
friend struct content::BrowserThread::DeleteOnThread<
friend class base::DeleteHelper<CustomThemeSupplier>;
ThemeType theme_type_;