/*************************************************************************** rendfont.h Rendering system font management. **************************************************************************** Copyright Aaron Giles All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. * Neither the name 'MAME' nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY AARON GILES ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL AARON GILES BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. ***************************************************************************/ #ifndef __RENDFONT_H__ #define __RENDFONT_H__ #include "render.h" //************************************************************************** // TYPE DEFINITIONS //************************************************************************** // ======================> render_font // a render_font describes and provides an interface to a font class render_font { friend class render_manager; friend resource_pool_object::~resource_pool_object(); // construction/destruction render_font(render_manager &manager, const char *filename); virtual ~render_font(); public: // getters render_manager &manager() const { return m_manager; } // size queries INT32 pixel_height() const { return m_height; } float char_width(float height, float aspect, unicode_char ch); float string_width(float height, float aspect, const char *string); float utf8string_width(float height, float aspect, const char *utf8string); // texture/bitmap queries render_texture *get_char_texture_and_bounds(float height, float aspect, unicode_char ch, render_bounds &bounds); void get_scaled_bitmap_and_bounds(bitmap_t &dest, float height, float aspect, unicode_char chnum, rectangle &bounds); private: // a glyph describes a single glyph class glyph { public: INT32 width; // width from this character to the next INT32 xoffs, yoffs; // X and Y offset from baseline to top,left of bitmap INT32 bmwidth, bmheight; // width and height of bitmap const char * rawdata; // pointer to the raw data for this one bitmap_t * bitmap; // pointer to the bitmap containing the raw data render_texture * texture; // pointer to a texture for rendering and sizing }; // internal format enum format { FF_UNKNOWN, FF_TEXT, FF_CACHED, FF_OSD }; // helpers glyph &get_char(unicode_char chnum); void char_expand(unicode_char chnum, glyph &ch); bool load_cached_bdf(const char *filename); bool load_bdf(); bool load_cached(mame_file *file, UINT32 hash); bool save_cached(const char *filename, UINT32 hash); // internal state render_manager & m_manager; format m_format; // format of font data int m_height; // height of the font, from ascent to descent int m_yoffs; // y offset from baseline to descent float m_scale; // 1 / height precomputed glyph * m_glyphs[256]; // array of glyph subtables const char * m_rawdata; // pointer to the raw data for the font UINT64 m_rawsize; // size of the raw font data osd_font m_osdfont; // handle to the OSD font // constants static const int CACHED_CHAR_SIZE = 12; static const int CACHED_HEADER_SIZE = 16; static const int CACHED_BDF_HASH_SIZE = 1024; }; #endif /* __RENDFONT_H__ */