开通博客赚积分
发布资源赚积分
分类

源码开发语言/平台
当前位置：首页 > 源码/资料 > 游戏 > 其他游戏 > 查看源码
ftoutln.h
资源名称：wow-313-source.rar　[点击查看]
上传用户：yisoukefu
上传日期：2020-08-09
资源大小：39506k
文件大小：31k
源码类别：

其他游戏

开发平台：

Visual C++

ftoutln.h：源码内容
  1. /***************************************************************************/
  2. /*                                                                         */
  3. /*  ftoutln.h                                                              */
  4. /*                                                                         */
  5. /*    Support for the FT_Outline type used to store glyph shapes of        */
  6. /*    most scalable font formats (specification).                          */
  7. /*                                                                         */
  8. /*  Copyright 1996-2001, 2002, 2003, 2005, 2006, 2007 by                   */
  9. /*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
  10. /*                                                                         */
  11. /*  This file is part of the FreeType project, and may only be used,       */
  12. /*  modified, and distributed under the terms of the FreeType project      */
  13. /*  license, LICENSE.TXT.  By continuing to use, modify, or distribute     */
  14. /*  this file you indicate that you have read the license and              */
  15. /*  understand and accept it fully.                                        */
  16. /*                                                                         */
  17. /***************************************************************************/
  20. #ifndef __FTOUTLN_H__
  21. #define __FTOUTLN_H__
  24. #include <ft2build.h>
  25. #include FT_FREETYPE_H
  27. #ifdef FREETYPE_H
  28. #error "freetype.h of FreeType 1 has been loaded!"
  29. #error "Please fix the directory search order for header files"
  30. #error "so that freetype.h of FreeType 2 is found first."
  31. #endif
  34. FT_BEGIN_HEADER
  37.   /*************************************************************************/
  38.   /*                                                                       */
  39.   /* <Section>                                                             */
  40.   /*    outline_processing                                                 */
  41.   /*                                                                       */
  42.   /* <Title>                                                               */
  43.   /*    Outline Processing                                                 */
  44.   /*                                                                       */
  45.   /* <Abstract>                                                            */
  46.   /*    Functions to create, transform, and render vectorial glyph images. */
  47.   /*                                                                       */
  48.   /* <Description>                                                         */
  49.   /*    This section contains routines used to create and destroy scalable */
  50.   /*    glyph images known as `outlines'.  These can also be measured,     */
  51.   /*    transformed, and converted into bitmaps and pixmaps.               */
  52.   /*                                                                       */
  53.   /* <Order>                                                               */
  54.   /*    FT_Outline                                                         */
  55.   /*    FT_OUTLINE_FLAGS                                                   */
  56.   /*    FT_Outline_New                                                     */
  57.   /*    FT_Outline_Done                                                    */
  58.   /*    FT_Outline_Copy                                                    */
  59.   /*    FT_Outline_Translate                                               */
  60.   /*    FT_Outline_Transform                                               */
  61.   /*    FT_Outline_Embolden                                                */
  62.   /*    FT_Outline_Reverse                                                 */
  63.   /*    FT_Outline_Check                                                   */
  64.   /*                                                                       */
  65.   /*    FT_Outline_Get_CBox                                                */
  66.   /*    FT_Outline_Get_BBox                                                */
  67.   /*                                                                       */
  68.   /*    FT_Outline_Get_Bitmap                                              */
  69.   /*    FT_Outline_Render                                                  */
  70.   /*                                                                       */
  71.   /*    FT_Outline_Decompose                                               */
  72.   /*    FT_Outline_Funcs                                                   */
  73.   /*    FT_Outline_MoveTo_Func                                             */
  74.   /*    FT_Outline_LineTo_Func                                             */
  75.   /*    FT_Outline_ConicTo_Func                                            */
  76.   /*    FT_Outline_CubicTo_Func                                            */
  77.   /*                                                                       */
  78.   /*************************************************************************/
  81.   /*************************************************************************/
  82.   /*                                                                       */
  83.   /* <Function>                                                            */
  84.   /*    FT_Outline_Decompose                                               */
  85.   /*                                                                       */
  86.   /* <Description>                                                         */
  87.   /*    Walks over an outline's structure to decompose it into individual  */
  88.   /*    segments and Bézier arcs.  This function is also able to emit      */
  89.   /*    `move to' and `close to' operations to indicate the start and end  */
  90.   /*    of new contours in the outline.                                    */
  91.   /*                                                                       */
  92.   /* <Input>                                                               */
  93.   /*    outline        :: A pointer to the source target.                  */
  94.   /*                                                                       */
  95.   /*    func_interface :: A table of `emitters', i.e,. function pointers   */
  96.   /*                      called during decomposition to indicate path     */
  97.   /*                      operations.                                      */
  98.   /*                                                                       */
  99.   /* <InOut>                                                               */
  100.   /*    user           :: A typeless pointer which is passed to each       */
  101.   /*                      emitter during the decomposition.  It can be     */
  102.   /*                      used to store the state during the               */
  103.   /*                      decomposition.                                   */
  104.   /*                                                                       */
  105.   /* <Return>                                                              */
  106.   /*    FreeType error code.  0 means success.                             */
  107.   /*                                                                       */
  108.   FT_EXPORT( FT_Error )
  109.   FT_Outline_Decompose( FT_Outline*              outline,
  110.                         const FT_Outline_Funcs*  func_interface,
  111.                         void*                    user );
  114.   /*************************************************************************/
  115.   /*                                                                       */
  116.   /* <Function>                                                            */
  117.   /*    FT_Outline_New                                                     */
  118.   /*                                                                       */
  119.   /* <Description>                                                         */
  120.   /*    Creates a new outline of a given size.                             */
  121.   /*                                                                       */
  122.   /* <Input>                                                               */
  123.   /*    library     :: A handle to the library object from where the       */
  124.   /*                   outline is allocated.  Note however that the new    */
  125.   /*                   outline will *not* necessarily be *freed*, when     */
  126.   /*                   destroying the library, by @FT_Done_FreeType.       */
  127.   /*                                                                       */
  128.   /*    numPoints   :: The maximal number of points within the outline.    */
  129.   /*                                                                       */
  130.   /*    numContours :: The maximal number of contours within the outline.  */
  131.   /*                                                                       */
  132.   /* <Output>                                                              */
  133.   /*    anoutline   :: A handle to the new outline.  NULL in case of       */
  134.   /*                   error.                                              */
  135.   /*                                                                       */
  136.   /* <Return>                                                              */
  137.   /*    FreeType error code.  0 means success.                             */
  138.   /*                                                                       */
  139.   /* <Note>                                                                */
  140.   /*    The reason why this function takes a `library' parameter is simply */
  141.   /*    to use the library's memory allocator.                             */
  142.   /*                                                                       */
  143.   FT_EXPORT( FT_Error )
  144.   FT_Outline_New( FT_Library   library,
  145.                   FT_UInt      numPoints,
  146.                   FT_Int       numContours,
  147.                   FT_Outline  *anoutline );
  150.   FT_EXPORT( FT_Error )
  151.   FT_Outline_New_Internal( FT_Memory    memory,
  152.                            FT_UInt      numPoints,
  153.                            FT_Int       numContours,
  154.                            FT_Outline  *anoutline );
  157.   /*************************************************************************/
  158.   /*                                                                       */
  159.   /* <Function>                                                            */
  160.   /*    FT_Outline_Done                                                    */
  161.   /*                                                                       */
  162.   /* <Description>                                                         */
  163.   /*    Destroys an outline created with @FT_Outline_New.                  */
  164.   /*                                                                       */
  165.   /* <Input>                                                               */
  166.   /*    library :: A handle of the library object used to allocate the     */
  167.   /*               outline.                                                */
  168.   /*                                                                       */
  169.   /*    outline :: A pointer to the outline object to be discarded.        */
  170.   /*                                                                       */
  171.   /* <Return>                                                              */
  172.   /*    FreeType error code.  0 means success.                             */
  173.   /*                                                                       */
  174.   /* <Note>                                                                */
  175.   /*    If the outline's `owner' field is not set, only the outline        */
  176.   /*    descriptor will be released.                                       */
  177.   /*                                                                       */
  178.   /*    The reason why this function takes an `library' parameter is       */
  179.   /*    simply to use ft_mem_free().                                       */
  180.   /*                                                                       */
  181.   FT_EXPORT( FT_Error )
  182.   FT_Outline_Done( FT_Library   library,
  183.                    FT_Outline*  outline );
  186.   FT_EXPORT( FT_Error )
  187.   FT_Outline_Done_Internal( FT_Memory    memory,
  188.                             FT_Outline*  outline );
  191.   /*************************************************************************/
  192.   /*                                                                       */
  193.   /* <Function>                                                            */
  194.   /*    FT_Outline_Check                                                   */
  195.   /*                                                                       */
  196.   /* <Description>                                                         */
  197.   /*    Check the contents of an outline descriptor.                       */
  198.   /*                                                                       */
  199.   /* <Input>                                                               */
  200.   /*    outline :: A handle to a source outline.                           */
  201.   /*                                                                       */
  202.   /* <Return>                                                              */
  203.   /*    FreeType error code.  0 means success.                             */
  204.   /*                                                                       */
  205.   FT_EXPORT( FT_Error )
  206.   FT_Outline_Check( FT_Outline*  outline );
  209.   /*************************************************************************/
  210.   /*                                                                       */
  211.   /* <Function>                                                            */
  212.   /*    FT_Outline_Get_CBox                                                */
  213.   /*                                                                       */
  214.   /* <Description>                                                         */
  215.   /*    Returns an outline's `control box'.  The control box encloses all  */
  216.   /*    the outline's points, including Bézier control points.  Though it  */
  217.   /*    coincides with the exact bounding box for most glyphs, it can be   */
  218.   /*    slightly larger in some situations (like when rotating an outline  */
  219.   /*    which contains Bézier outside arcs).                               */
  220.   /*                                                                       */
  221.   /*    Computing the control box is very fast, while getting the bounding */
  222.   /*    box can take much more time as it needs to walk over all segments  */
  223.   /*    and arcs in the outline.  To get the latter, you can use the       */
  224.   /*    `ftbbox' component which is dedicated to this single task.         */
  225.   /*                                                                       */
  226.   /* <Input>                                                               */
  227.   /*    outline :: A pointer to the source outline descriptor.             */
  228.   /*                                                                       */
  229.   /* <Output>                                                              */
  230.   /*    acbox   :: The outline's control box.                              */
  231.   /*                                                                       */
  232.   FT_EXPORT( void )
  233.   FT_Outline_Get_CBox( const FT_Outline*  outline,
  234.                        FT_BBox           *acbox );
  237.   /*************************************************************************/
  238.   /*                                                                       */
  239.   /* <Function>                                                            */
  240.   /*    FT_Outline_Translate                                               */
  241.   /*                                                                       */
  242.   /* <Description>                                                         */
  243.   /*    Applies a simple translation to the points of an outline.          */
  244.   /*                                                                       */
  245.   /* <InOut>                                                               */
  246.   /*    outline :: A pointer to the target outline descriptor.             */
  247.   /*                                                                       */
  248.   /* <Input>                                                               */
  249.   /*    xOffset :: The horizontal offset.                                  */
  250.   /*                                                                       */
  251.   /*    yOffset :: The vertical offset.                                    */
  252.   /*                                                                       */
  253.   FT_EXPORT( void )
  254.   FT_Outline_Translate( const FT_Outline*  outline,
  255.                         FT_Pos             xOffset,
  256.                         FT_Pos             yOffset );
  259.   /*************************************************************************/
  260.   /*                                                                       */
  261.   /* <Function>                                                            */
  262.   /*    FT_Outline_Copy                                                    */
  263.   /*                                                                       */
  264.   /* <Description>                                                         */
  265.   /*    Copies an outline into another one.  Both objects must have the    */
  266.   /*    same sizes (number of points & number of contours) when this       */
  267.   /*    function is called.                                                */
  268.   /*                                                                       */
  269.   /* <Input>                                                               */
  270.   /*    source :: A handle to the source outline.                          */
  271.   /*                                                                       */
  272.   /* <Output>                                                              */
  273.   /*    target :: A handle to the target outline.                          */
  274.   /*                                                                       */
  275.   /* <Return>                                                              */
  276.   /*    FreeType error code.  0 means success.                             */
  277.   /*                                                                       */
  278.   FT_EXPORT( FT_Error )
  279.   FT_Outline_Copy( const FT_Outline*  source,
  280.                    FT_Outline        *target );
  283.   /*************************************************************************/
  284.   /*                                                                       */
  285.   /* <Function>                                                            */
  286.   /*    FT_Outline_Transform                                               */
  287.   /*                                                                       */
  288.   /* <Description>                                                         */
  289.   /*    Applies a simple 2x2 matrix to all of an outline's points.  Useful */
  290.   /*    for applying rotations, slanting, flipping, etc.                   */
  291.   /*                                                                       */
  292.   /* <InOut>                                                               */
  293.   /*    outline :: A pointer to the target outline descriptor.             */
  294.   /*                                                                       */
  295.   /* <Input>                                                               */
  296.   /*    matrix  :: A pointer to the transformation matrix.                 */
  297.   /*                                                                       */
  298.   /* <Note>                                                                */
  299.   /*    You can use @FT_Outline_Translate if you need to translate the     */
  300.   /*    outline's points.                                                  */
  301.   /*                                                                       */
  302.   FT_EXPORT( void )
  303.   FT_Outline_Transform( const FT_Outline*  outline,
  304.                         const FT_Matrix*   matrix );
  307.   /*************************************************************************/
  308.   /*                                                                       */
  309.   /* <Function>                                                            */
  310.   /*    FT_Outline_Embolden                                                */
  311.   /*                                                                       */
  312.   /* <Description>                                                         */
  313.   /*    Emboldens an outline.  The new outline will be at most 4 times     */
  314.   /*    `strength' pixels wider and higher.  You may think of the left and */
  315.   /*    bottom borders as unchanged.                                       */
  316.   /*                                                                       */
  317.   /*    Negative `strength' values to reduce the outline thickness are     */
  318.   /*    possible also.                                                     */
  319.   /*                                                                       */
  320.   /* <InOut>                                                               */
  321.   /*    outline  :: A handle to the target outline.                        */
  322.   /*                                                                       */
  323.   /* <Input>                                                               */
  324.   /*    strength :: How strong the glyph is emboldened.  Expressed in      */
  325.   /*                26.6 pixel format.                                     */
  326.   /*                                                                       */
  327.   /* <Return>                                                              */
  328.   /*    FreeType error code.  0 means success.                             */
  329.   /*                                                                       */
  330.   /* <Note>                                                                */
  331.   /*    The used algorithm to increase or decrease the thickness of the    */
  332.   /*    glyph doesn't change the number of points; this means that certain */
  333.   /*    situations like acute angles or intersections are sometimes        */
  334.   /*    handled incorrectly.                                               */
  335.   /*                                                                       */
  336.   /*    Example call:                                                      */
  337.   /*                                                                       */
  338.   /*    {                                                                  */
  339.   /*      FT_Load_Glyph( face, index, FT_LOAD_DEFAULT );                   */
  340.   /*      if ( face->slot->format == FT_GLYPH_FORMAT_OUTLINE )             */
  341.   /*        FT_Outline_Embolden( &face->slot->outline, strength );         */
  342.   /*    }                                                                  */
  343.   /*                                                                       */
  344.   FT_EXPORT( FT_Error )
  345.   FT_Outline_Embolden( FT_Outline*  outline,
  346.                        FT_Pos       strength );
  349.   /*************************************************************************/
  350.   /*                                                                       */
  351.   /* <Function>                                                            */
  352.   /*    FT_Outline_Reverse                                                 */
  353.   /*                                                                       */
  354.   /* <Description>                                                         */
  355.   /*    Reverses the drawing direction of an outline.  This is used to     */
  356.   /*    ensure consistent fill conventions for mirrored glyphs.            */
  357.   /*                                                                       */
  358.   /* <InOut>                                                               */
  359.   /*    outline :: A pointer to the target outline descriptor.             */
  360.   /*                                                                       */
  361.   /* <Note>                                                                */
  362.   /*    This functions toggles the bit flag @FT_OUTLINE_REVERSE_FILL in    */
  363.   /*    the outline's `flags' field.                                       */
  364.   /*                                                                       */
  365.   /*    It shouldn't be used by a normal client application, unless it     */
  366.   /*    knows what it is doing.                                            */
  367.   /*                                                                       */
  368.   FT_EXPORT( void )
  369.   FT_Outline_Reverse( FT_Outline*  outline );
  372.   /*************************************************************************/
  373.   /*                                                                       */
  374.   /* <Function>                                                            */
  375.   /*    FT_Outline_Get_Bitmap                                              */
  376.   /*                                                                       */
  377.   /* <Description>                                                         */
  378.   /*    Renders an outline within a bitmap.  The outline's image is simply */
  379.   /*    OR-ed to the target bitmap.                                        */
  380.   /*                                                                       */
  381.   /* <Input>                                                               */
  382.   /*    library :: A handle to a FreeType library object.                  */
  383.   /*                                                                       */
  384.   /*    outline :: A pointer to the source outline descriptor.             */
  385.   /*                                                                       */
  386.   /* <InOut>                                                               */
  387.   /*    abitmap :: A pointer to the target bitmap descriptor.              */
  388.   /*                                                                       */
  389.   /* <Return>                                                              */
  390.   /*    FreeType error code.  0 means success.                             */
  391.   /*                                                                       */
  392.   /* <Note>                                                                */
  393.   /*    This function does NOT CREATE the bitmap, it only renders an       */
  394.   /*    outline image within the one you pass to it!                       */
  395.   /*                                                                       */
  396.   /*    It will use the raster corresponding to the default glyph format.  */
  397.   /*                                                                       */
  398.   FT_EXPORT( FT_Error )
  399.   FT_Outline_Get_Bitmap( FT_Library        library,
  400.                          FT_Outline*       outline,
  401.                          const FT_Bitmap  *abitmap );
  404.   /*************************************************************************/
  405.   /*                                                                       */
  406.   /* <Function>                                                            */
  407.   /*    FT_Outline_Render                                                  */
  408.   /*                                                                       */
  409.   /* <Description>                                                         */
  410.   /*    Renders an outline within a bitmap using the current scan-convert. */
  411.   /*    This functions uses an @FT_Raster_Params structure as an argument, */
  412.   /*    allowing advanced features like direct composition, translucency,  */
  413.   /*    etc.                                                               */
  414.   /*                                                                       */
  415.   /* <Input>                                                               */
  416.   /*    library :: A handle to a FreeType library object.                  */
  417.   /*                                                                       */
  418.   /*    outline :: A pointer to the source outline descriptor.             */
  419.   /*                                                                       */
  420.   /* <InOut>                                                               */
  421.   /*    params  :: A pointer to an @FT_Raster_Params structure used to     */
  422.   /*               describe the rendering operation.                       */
  423.   /*                                                                       */
  424.   /* <Return>                                                              */
  425.   /*    FreeType error code.  0 means success.                             */
  426.   /*                                                                       */
  427.   /* <Note>                                                                */
  428.   /*    You should know what you are doing and how @FT_Raster_Params works */
  429.   /*    to use this function.                                              */
  430.   /*                                                                       */
  431.   /*    The field `params.source' will be set to `outline' before the scan */
  432.   /*    converter is called, which means that the value you give to it is  */
  433.   /*    actually ignored.                                                  */
  434.   /*                                                                       */
  435.   FT_EXPORT( FT_Error )
  436.   FT_Outline_Render( FT_Library         library,
  437.                      FT_Outline*        outline,
  438.                      FT_Raster_Params*  params );
  441.  /**************************************************************************
  442.   *
  443.   * @enum:
  444.   *   FT_Orientation
  445.   *
  446.   * @description:
  447.   *   A list of values used to describe an outline's contour orientation.
  448.   *
  449.   *   The TrueType and Postscript specifications use different conventions
  450.   *   to determine whether outline contours should be filled or unfilled.
  451.   *
  452.   * @values:
  453.   *   FT_ORIENTATION_TRUETYPE ::
  454.   *     According to the TrueType specification, clockwise contours must
  455.   *     be filled, and counter-clockwise ones must be unfilled.
  456.   *
  457.   *   FT_ORIENTATION_POSTSCRIPT ::
  458.   *     According to the Postscript specification, counter-clockwise contours
  459.   *     must be filled, and clockwise ones must be unfilled.
  460.   *
  461.   *   FT_ORIENTATION_FILL_RIGHT ::
  462.   *     This is identical to @FT_ORIENTATION_TRUETYPE, but is used to
  463.   *     remember that in TrueType, everything that is to the right of
  464.   *     the drawing direction of a contour must be filled.
  465.   *
  466.   *   FT_ORIENTATION_FILL_LEFT ::
  467.   *     This is identical to @FT_ORIENTATION_POSTSCRIPT, but is used to
  468.   *     remember that in Postscript, everything that is to the left of
  469.   *     the drawing direction of a contour must be filled.
  470.   *
  471.   *   FT_ORIENTATION_NONE ::
  472.   *     The orientation cannot be determined.  That is, different parts of
  473.   *     the glyph have different orientation.
  474.   *
  475.   */
  476.   typedef enum
  477.   {
  478.     FT_ORIENTATION_TRUETYPE   = 0,
  479.     FT_ORIENTATION_POSTSCRIPT = 1,
  480.     FT_ORIENTATION_FILL_RIGHT = FT_ORIENTATION_TRUETYPE,
  481.     FT_ORIENTATION_FILL_LEFT  = FT_ORIENTATION_POSTSCRIPT,
  482.     FT_ORIENTATION_NONE
  484.   } FT_Orientation;
  487.  /**************************************************************************
  488.   *
  489.   * @function:
  490.   *   FT_Outline_Get_Orientation
  491.   *
  492.   * @description:
  493.   *   This function analyzes a glyph outline and tries to compute its
  494.   *   fill orientation (see @FT_Orientation).  This is done by computing
  495.   *   the direction of each global horizontal and/or vertical extrema
  496.   *   within the outline.
  497.   *
  498.   *   Note that this will return @FT_ORIENTATION_TRUETYPE for empty
  499.   *   outlines.
  500.   *
  501.   * @input:
  502.   *   outline ::
  503.   *     A handle to the source outline.
  504.   *
  505.   * @return:
  506.   *   The orientation.
  507.   *
  508.   */
  509.   FT_EXPORT( FT_Orientation )
  510.   FT_Outline_Get_Orientation( FT_Outline*  outline );
  513.   /* */
  516. FT_END_HEADER
  518. #endif /* __FTOUTLN_H__ */
  521. /* END */
  524. /* Local Variables: */
  525. /* coding: utf-8    */
  526. /* End:             */