kc3-lang/ftgl/src/FTSize.h

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• Hash : 1f4a94f8
  Author :
  Date : 2008-04-29T14:39:28
  

  * Since the MIT license is LGPL-compatible, there is no real point in shipping FTGL under a dual license. Consequently removing LGPL references from the code, in agreement with Sean.

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• src/FTSize.h

• /*
   * FTGL - OpenGL font library
   *
   * Copyright (c) 2001-2004 Henry Maddocks <ftgl@opengl.geek.nz>
   *
   * Permission is hereby granted, free of charge, to any person obtaining
   * a copy of this software and associated documentation files (the
   * "Software"), to deal in the Software without restriction, including
   * without limitation the rights to use, copy, modify, merge, publish,
   * distribute, sublicense, and/or sell copies of the Software, and to
   * permit persons to whom the Software is furnished to do so, subject to
   * the following conditions:
   *
   * The above copyright notice and this permission notice shall be
   * included in all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
   * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
   * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
   * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
   * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
   * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
   * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
   */
  
  #ifndef     __FTSize__
  #define     __FTSize__
  
  
  #include <ft2build.h>
  #include FT_FREETYPE_H
  
  #include "ftgl.h"
  
  
  
  /**
   * FTSize class provides an abstraction layer for the Freetype Size.
   *
   * @see "Freetype 2 Documentation"
   *
   */
  class FTGL_EXPORT FTSize
  {
      public:
          /**
           * Default Constructor
           */
           FTSize();
  
          /**
           * Destructor
           */
          virtual ~FTSize();
  
          /**
           * Sets the char size for the current face.
           *
           * This doesn't guarantee that the size was set correctly. Clients
           * should check errors. If an error does occur the size object isn't modified.
           *
           * @param face           Parent face for this size object
           * @param point_size     the face size in points (1/72 inch)
           * @param x_resolution   the horizontal resolution of the target device.
           * @param y_resolution   the vertical resolution of the target device.
           * @return          <code>true</code> if the size has been set. Clients should check Error() for more information if this function returns false()
           */
          bool CharSize(FT_Face* face, unsigned int point_size,
                        unsigned int x_resolution, unsigned int y_resolution);
  
          /**
           * get the char size for the current face.
           *
           * @return The char size in points
           */
          unsigned int CharSize() const;
  
          /**
           * Gets the global ascender height for the face in pixels.
           *
           * @return  Ascender height
           */
          float Ascender() const;
  
          /**
           * Gets the global descender height for the face in pixels.
           *
           * @return  Ascender height
           */
          float Descender() const;
  
          /**
           * Gets the global face height for the face.
           *
           * If the face is scalable this returns the height of the global
           * bounding box which ensures that any glyph will be less than or
           * equal to this height. If the font isn't scalable there is no
           * guarantee that glyphs will not be taller than this value.
           *
           * @return  height in pixels.
           */
          float Height() const;
  
          /**
           * Gets the global face width for the face.
           *
           * If the face is scalable this returns the width of the global
           * bounding box which ensures that any glyph will be less than or
           * equal to this width. If the font isn't scalable this value is
           * the max_advance for the face.
           *
           * @return  width in pixels.
           */
          float Width() const;
  
          /**
           * Gets the underline position for the face.
           *
           * @return  underline position in pixels
           */
          float Underline() const;
  
          /**
           * Queries for errors.
           *
           * @return  The current error code.
           */
          FT_Error Error() const { return err; }
  
      private:
          /**
           * The current Freetype face that this FTSize object relates to.
           */
          FT_Face* ftFace;
  
          /**
           *  The Freetype size.
           */
          FT_Size ftSize;
  
          /**
           *  The size in points.
           */
          unsigned int size;
  
          /**
           *  The horizontal resolution.
           */
          unsigned int xResolution;
  
          /**
           *  The vertical resolution.
           */
          unsigned int yResolution;
  
          /**
           * Current error code. Zero means no error.
           */
          FT_Error err;
  
  };
  
  #endif  //  __FTSize__
  
  

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