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// Copyright (c) 2009 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 APP_THEME_PROVIDER_H_
#define APP_THEME_PROVIDER_H_
#include "base/basictypes.h"
#include "third_party/skia/include/core/SkColor.h"
#if defined(OS_LINUX)
#include <gdk/gdk.h>
#endif
class SkBitmap;
////////////////////////////////////////////////////////////////////////////////
//
// ThemeProvider
//
// ThemeProvider is an abstract class that defines the API that should be
// implemented to provide bitmaps and color information for a given theme.
//
////////////////////////////////////////////////////////////////////////////////
class ThemeProvider {
public:
virtual ~ThemeProvider() { }
// Get the bitmap specified by |id|. An implementation of ThemeProvider should
// have its own source of ids (e.g. an enum, or external resource bundle).
virtual SkBitmap* GetBitmapNamed(int id) = 0;
// Get the color specified by |id|.
virtual SkColor GetColor(int id) = 0;
#if defined(OS_LINUX)
// Gets the GdkPixbuf with the specified |id|. Returns a pointer to a shared
// instance of the GdkPixbuf. This shared GdkPixbuf is owned by the theme
// provider and should not be freed.
//
// The bitmap is assumed to exist. This function will log in release, and
// assert in debug mode if it does not. On failure, this will return a
// pointer to a shared empty placeholder bitmap so it will be visible what
// is missing.
virtual GdkPixbuf* GetPixbufNamed(int id) = 0;
#endif
};
#endif // APP_THEME_PROVIDER_H_
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