text: /*-
   * Copyright (c) 2014 Jason Lingle
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. 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.
   * 3. Neither the name of the author 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 THE AUTHOR ``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 THE AUTHOR 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 GRAPHICS_FONT_H_
  #define GRAPHICS_FONT_H_
  
  #include "bsd.h"
  
  #include "canvas.h"
  
  __BEGIN_DECLS
  
  /**
   * @file
   *
   * Supports rendering characters using codepage 437 with the generic PC font.
   */
  
  #define FONT_CHARW 9
  #define FONT_CHARH 16
  
  /**
   * Returns the number of horizontal pixels taken to render the given string.
   */
  unsigned font_strwidth(const char*);
  /**
   * Renders the given string onto the given canvas.
   *
   * @param lx The X coordinate of the upper left of the first character.
   * @param ly The Y coordinate of the upper left of the first character.
   */
  void font_render(canvas*, signed lx, signed ty,
                   const char*, canvas_pixel);
  
  /**
   * Renders the given character at the given coordinates.
   */
  void font_renderch(canvas*, signed lx, signed ty, unsigned char, canvas_pixel);
  
  __END_DECLS
  
  #endif /* GRAPHICS_FONT_H_ */
  