generic_font.hpp

来自「VLC媒体播放程序」· HPP 代码 · 共 62 行

/*****************************************************************************
 * generic_font.hpp
 *****************************************************************************
 * Copyright (C) 2003 VideoLAN
 * $Id: generic_font.hpp,v 1.1 2004/01/03 23:31:33 asmax Exp $
 *
 * Authors: Cyril Deguet     <[e-mail]>
 *          Olivier Teuli鑢e <[e-mail]>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
 *****************************************************************************/

#ifndef GENERIC_FONT_HPP
#define GENERIC_FONT_HPP

#include "skin_common.hpp"
#include "../utils/pointer.hpp"

class GenericBitmap;
class UString;

/// Base class for fonts
class GenericFont: public SkinObject
{
    public:
        virtual ~GenericFont() {}

        virtual bool init() = 0;

        /// Render a string on a bitmap.
        /// If maxWidth != -1, the text is truncated with '...'
        /// rAscent is filled with the maximum ascent of the glyphs in
        /// the string (for explanations, see:
        /// http://www.freetype.org/freetype2/docs/tutorial/step2.html)
        virtual GenericBitmap *drawString( const UString &rString,
            uint32_t color, int maxWidth = -1 ) const = 0;


        /// Get the font size
        virtual int getSize() const = 0;

    protected:
        GenericFont( intf_thread_t *pIntf ): SkinObject( pIntf ) {}
};

typedef CountedPtr<GenericFont> GenericFontPtr;


#endif