bitmap_font.hpp
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上传日期:2020-07-06
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midi
开发平台:
Unix_Linux
- /*****************************************************************************
- * bitmap_font.hpp
- *****************************************************************************
- * Copyright (C) 2004 the VideoLAN team
- * $Id: 8da091eb58c36dc33d3dfa73b54855bbb925a14d $
- *
- * Authors: Cyril Deguet <asmax@via.ecp.fr>
- *
- * 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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
- *****************************************************************************/
- #ifndef BITMAP_FONT_HPP
- #define BITMAP_FONT_HPP
- #include "generic_font.hpp"
- #include <string>
- class GenericBitmap;
- /// Class to handle bitmap fonts
- class BitmapFont: public GenericFont
- {
- public:
- BitmapFont( intf_thread_t *pIntf, const GenericBitmap &rBitmap,
- const string &rType );
- virtual ~BitmapFont() {}
- virtual bool init() { return true; }
- /// Render a string on a bitmap.
- /// If maxWidth != -1, the text is truncated with '...'
- virtual GenericBitmap *drawString( const UString &rString,
- uint32_t color, int maxWidth = -1 ) const;
- /// Get the font size
- virtual int getSize() const { return m_height; }
- private:
- /// Description of a glyph
- struct Glyph_t
- {
- Glyph_t(): m_xPos( -1 ), m_yPos( 0 ) {}
- int m_xPos, m_yPos;
- };
- /// Bitmap
- const GenericBitmap &m_rBitmap;
- /// Glyph size
- int m_width, m_height;
- /// Horizontal advance between two characters
- int m_advance;
- /// Horizontal advance for non-displayable characters
- int m_skip;
- /// Character table
- Glyph_t m_table[256];
- };
- #endif