Merge to XFA: Update bundled freetype to 2.6.1

third_party/freetype/include/ftstroke.h

Index: third_party/freetype/include/ftstroke.h
diff --git a/third_party/freetype/include/ftstroke.h b/third_party/freetype/include/ftstroke.h
deleted file mode 100644
index bd311709f3470924b4bf56f21a03f83dbe3bdb7e..0000000000000000000000000000000000000000
--- a/third_party/freetype/include/ftstroke.h
+++ /dev/null
@@ -1,785 +0,0 @@
-/***************************************************************************/
-/*                                                                         */
-/*  ftstroke.h                                                             */
-/*                                                                         */
-/*    FreeType path stroker (specification).                               */
-/*                                                                         */
-/*  Copyright 2002-2006, 2008, 2009, 2011-2012, 2014 by                    */
-/*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
-/*                                                                         */
-/*  This file is part of the FreeType project, and may only be used,       */
-/*  modified, and distributed under the terms of the FreeType project      */
-/*  license, LICENSE.TXT.  By continuing to use, modify, or distribute     */
-/*  this file you indicate that you have read the license and              */
-/*  understand and accept it fully.                                        */
-/*                                                                         */
-/***************************************************************************/
-
-
-#ifndef __FT_STROKE_H__
-#define __FT_STROKE_H__
-
-#include <ft2build.h>
-#include FT_OUTLINE_H
-#include FT_GLYPH_H
-
-
-FT_BEGIN_HEADER
-
-
- /************************************************************************
-  *
-  * @section:
-  *    glyph_stroker
-  *
-  * @title:
-  *    Glyph Stroker
-  *
-  * @abstract:
-  *    Generating bordered and stroked glyphs.
-  *
-  * @description:
-  *    This component generates stroked outlines of a given vectorial
-  *    glyph.  It also allows you to retrieve the `outside' and/or the
-  *    `inside' borders of the stroke.
-  *
-  *    This can be useful to generate `bordered' glyph, i.e., glyphs
-  *    displayed with a coloured (and anti-aliased) border around their
-  *    shape.
-  *
-  * @order:
-  *    FT_Stroker
-  *
-  *    FT_Stroker_LineJoin
-  *    FT_Stroker_LineCap
-  *    FT_StrokerBorder
-  *
-  *    FT_Outline_GetInsideBorder
-  *    FT_Outline_GetOutsideBorder
-  *
-  *    FT_Glyph_Stroke
-  *    FT_Glyph_StrokeBorder
-  *
-  *    FT_Stroker_New
-  *    FT_Stroker_Set
-  *    FT_Stroker_Rewind
-  *    FT_Stroker_ParseOutline
-  *    FT_Stroker_Done
-  *
-  *    FT_Stroker_BeginSubPath
-  *    FT_Stroker_EndSubPath
-  *
-  *    FT_Stroker_LineTo
-  *    FT_Stroker_ConicTo
-  *    FT_Stroker_CubicTo
-  *
-  *    FT_Stroker_GetBorderCounts
-  *    FT_Stroker_ExportBorder
-  *    FT_Stroker_GetCounts
-  *    FT_Stroker_Export
-  *
-  */
-
-
- /**************************************************************
-  *
-  * @type:
-  *   FT_Stroker
-  *
-  * @description:
-  *   Opaque handle to a path stroker object.
-  */
-  typedef struct FT_StrokerRec_*  FT_Stroker;
-
-
-  /**************************************************************
-   *
-   * @enum:
-   *   FT_Stroker_LineJoin
-   *
-   * @description:
-   *   These values determine how two joining lines are rendered
-   *   in a stroker.
-   *
-   * @values:
-   *   FT_STROKER_LINEJOIN_ROUND ::
-   *     Used to render rounded line joins.  Circular arcs are used
-   *     to join two lines smoothly.
-   *
-   *   FT_STROKER_LINEJOIN_BEVEL ::
-   *     Used to render beveled line joins.  The outer corner of
-   *     the joined lines is filled by enclosing the triangular
-   *     region of the corner with a straight line between the
-   *     outer corners of each stroke.
-   *
-   *   FT_STROKER_LINEJOIN_MITER_FIXED ::
-   *     Used to render mitered line joins, with fixed bevels if the
-   *     miter limit is exceeded.  The outer edges of the strokes
-   *     for the two segments are extended until they meet at an
-   *     angle.  If the segments meet at too sharp an angle (such
-   *     that the miter would extend from the intersection of the
-   *     segments a distance greater than the product of the miter
-   *     limit value and the border radius), then a bevel join (see
-   *     above) is used instead.  This prevents long spikes being
-   *     created.  FT_STROKER_LINEJOIN_MITER_FIXED generates a miter
-   *     line join as used in PostScript and PDF.
-   *
-   *   FT_STROKER_LINEJOIN_MITER_VARIABLE ::
-   *   FT_STROKER_LINEJOIN_MITER ::
-   *     Used to render mitered line joins, with variable bevels if
-   *     the miter limit is exceeded.  The intersection of the
-   *     strokes is clipped at a line perpendicular to the bisector
-   *     of the angle between the strokes, at the distance from the
-   *     intersection of the segments equal to the product of the
-   *     miter limit value and the border radius.  This prevents
-   *     long spikes being created.
-   *     FT_STROKER_LINEJOIN_MITER_VARIABLE generates a mitered line
-   *     join as used in XPS.  FT_STROKER_LINEJOIN_MITER is an alias
-   *     for FT_STROKER_LINEJOIN_MITER_VARIABLE, retained for
-   *     backwards compatibility.
-   */
-  typedef enum  FT_Stroker_LineJoin_
-  {
-    FT_STROKER_LINEJOIN_ROUND          = 0,
-    FT_STROKER_LINEJOIN_BEVEL          = 1,
-    FT_STROKER_LINEJOIN_MITER_VARIABLE = 2,
-    FT_STROKER_LINEJOIN_MITER          = FT_STROKER_LINEJOIN_MITER_VARIABLE,
-    FT_STROKER_LINEJOIN_MITER_FIXED    = 3
-
-  } FT_Stroker_LineJoin;
-
-
-  /**************************************************************
-   *
-   * @enum:
-   *   FT_Stroker_LineCap
-   *
-   * @description:
-   *   These values determine how the end of opened sub-paths are
-   *   rendered in a stroke.
-   *
-   * @values:
-   *   FT_STROKER_LINECAP_BUTT ::
-   *     The end of lines is rendered as a full stop on the last
-   *     point itself.
-   *
-   *   FT_STROKER_LINECAP_ROUND ::
-   *     The end of lines is rendered as a half-circle around the
-   *     last point.
-   *
-   *   FT_STROKER_LINECAP_SQUARE ::
-   *     The end of lines is rendered as a square around the
-   *     last point.
-   */
-  typedef enum  FT_Stroker_LineCap_
-  {
-    FT_STROKER_LINECAP_BUTT = 0,
-    FT_STROKER_LINECAP_ROUND,
-    FT_STROKER_LINECAP_SQUARE
-
-  } FT_Stroker_LineCap;
-
-
-  /**************************************************************
-   *
-   * @enum:
-   *   FT_StrokerBorder
-   *
-   * @description:
-   *   These values are used to select a given stroke border
-   *   in @FT_Stroker_GetBorderCounts and @FT_Stroker_ExportBorder.
-   *
-   * @values:
-   *   FT_STROKER_BORDER_LEFT ::
-   *     Select the left border, relative to the drawing direction.
-   *
-   *   FT_STROKER_BORDER_RIGHT ::
-   *     Select the right border, relative to the drawing direction.
-   *
-   * @note:
-   *   Applications are generally interested in the `inside' and `outside'
-   *   borders.  However, there is no direct mapping between these and the
-   *   `left' and `right' ones, since this really depends on the glyph's
-   *   drawing orientation, which varies between font formats.
-   *
-   *   You can however use @FT_Outline_GetInsideBorder and
-   *   @FT_Outline_GetOutsideBorder to get these.
-   */
-  typedef enum  FT_StrokerBorder_
-  {
-    FT_STROKER_BORDER_LEFT = 0,
-    FT_STROKER_BORDER_RIGHT
-
-  } FT_StrokerBorder;
-
-
-  /**************************************************************
-   *
-   * @function:
-   *   FT_Outline_GetInsideBorder
-   *
-   * @description:
-   *   Retrieve the @FT_StrokerBorder value corresponding to the
-   *   `inside' borders of a given outline.
-   *
-   * @input:
-   *   outline ::
-   *     The source outline handle.
-   *
-   * @return:
-   *   The border index.  @FT_STROKER_BORDER_RIGHT for empty or invalid
-   *   outlines.
-   */
-  FT_EXPORT( FT_StrokerBorder )
-  FT_Outline_GetInsideBorder( FT_Outline*  outline );
-
-
-  /**************************************************************
-   *
-   * @function:
-   *   FT_Outline_GetOutsideBorder
-   *
-   * @description:
-   *   Retrieve the @FT_StrokerBorder value corresponding to the
-   *   `outside' borders of a given outline.
-   *
-   * @input:
-   *   outline ::
-   *     The source outline handle.
-   *
-   * @return:
-   *   The border index.  @FT_STROKER_BORDER_LEFT for empty or invalid
-   *   outlines.
-   */
-  FT_EXPORT( FT_StrokerBorder )
-  FT_Outline_GetOutsideBorder( FT_Outline*  outline );
-
-
-  /**************************************************************
-   *
-   * @function:
-   *   FT_Stroker_New
-   *
-   * @description:
-   *   Create a new stroker object.
-   *
-   * @input:
-   *   library ::
-   *     FreeType library handle.
-   *
-   * @output:
-   *   astroker ::
-   *     A new stroker object handle.  NULL in case of error.
-   *
-   * @return:
-   *    FreeType error code.  0~means success.
-   */
-  FT_EXPORT( FT_Error )
-  FT_Stroker_New( FT_Library   library,
-                  FT_Stroker  *astroker );
-
-
-  /**************************************************************
-   *
-   * @function:
-   *   FT_Stroker_Set
-   *
-   * @description:
-   *   Reset a stroker object's attributes.
-   *
-   * @input:
-   *   stroker ::
-   *     The target stroker handle.
-   *
-   *   radius ::
-   *     The border radius.
-   *
-   *   line_cap ::
-   *     The line cap style.
-   *
-   *   line_join ::
-   *     The line join style.
-   *
-   *   miter_limit ::
-   *     The miter limit for the FT_STROKER_LINEJOIN_MITER_FIXED and
-   *     FT_STROKER_LINEJOIN_MITER_VARIABLE line join styles,
-   *     expressed as 16.16 fixed-point value.
-   *
-   * @note:
-   *   The radius is expressed in the same units as the outline
-   *   coordinates.
-   *
-   *   This function calls @FT_Stroker_Rewind automatically.
-   */
-  FT_EXPORT( void )
-  FT_Stroker_Set( FT_Stroker           stroker,
-                  FT_Fixed             radius,
-                  FT_Stroker_LineCap   line_cap,
-                  FT_Stroker_LineJoin  line_join,
-                  FT_Fixed             miter_limit );
-
-
-  /**************************************************************
-   *
-   * @function:
-   *   FT_Stroker_Rewind
-   *
-   * @description:
-   *   Reset a stroker object without changing its attributes.
-   *   You should call this function before beginning a new
-   *   series of calls to @FT_Stroker_BeginSubPath or
-   *   @FT_Stroker_EndSubPath.
-   *
-   * @input:
-   *   stroker ::
-   *     The target stroker handle.
-   */
-  FT_EXPORT( void )
-  FT_Stroker_Rewind( FT_Stroker  stroker );
-
-
-  /**************************************************************
-   *
-   * @function:
-   *   FT_Stroker_ParseOutline
-   *
-   * @description:
-   *   A convenience function used to parse a whole outline with
-   *   the stroker.  The resulting outline(s) can be retrieved
-   *   later by functions like @FT_Stroker_GetCounts and @FT_Stroker_Export.
-   *
-   * @input:
-   *   stroker ::
-   *     The target stroker handle.
-   *
-   *   outline ::
-   *     The source outline.
-   *
-   *   opened ::
-   *     A boolean.  If~1, the outline is treated as an open path instead
-   *     of a closed one.
-   *
-   * @return:
-   *   FreeType error code.  0~means success.
-   *
-   * @note:
-   *   If `opened' is~0 (the default), the outline is treated as a closed
-   *   path, and the stroker generates two distinct `border' outlines.
-   *
-   *   If `opened' is~1, the outline is processed as an open path, and the
-   *   stroker generates a single `stroke' outline.
-   *
-   *   This function calls @FT_Stroker_Rewind automatically.
-   */
-  FT_EXPORT( FT_Error )
-  FT_Stroker_ParseOutline( FT_Stroker   stroker,
-                           FT_Outline*  outline,
-                           FT_Bool      opened );
-
-
-  /**************************************************************
-   *
-   * @function:
-   *   FT_Stroker_BeginSubPath
-   *
-   * @description:
-   *   Start a new sub-path in the stroker.
-   *
-   * @input:
-   *   stroker ::
-   *     The target stroker handle.
-   *
-   *   to ::
-   *     A pointer to the start vector.
-   *
-   *   open ::
-   *     A boolean.  If~1, the sub-path is treated as an open one.
-   *
-   * @return:
-   *   FreeType error code.  0~means success.
-   *
-   * @note:
-   *   This function is useful when you need to stroke a path that is
-   *   not stored as an @FT_Outline object.
-   */
-  FT_EXPORT( FT_Error )
-  FT_Stroker_BeginSubPath( FT_Stroker  stroker,
-                           FT_Vector*  to,
-                           FT_Bool     open );
-
-
-  /**************************************************************
-   *
-   * @function:
-   *   FT_Stroker_EndSubPath
-   *
-   * @description:
-   *   Close the current sub-path in the stroker.
-   *
-   * @input:
-   *   stroker ::
-   *     The target stroker handle.
-   *
-   * @return:
-   *   FreeType error code.  0~means success.
-   *
-   * @note:
-   *   You should call this function after @FT_Stroker_BeginSubPath.
-   *   If the subpath was not `opened', this function `draws' a
-   *   single line segment to the start position when needed.
-   */
-  FT_EXPORT( FT_Error )
-  FT_Stroker_EndSubPath( FT_Stroker  stroker );
-
-
-  /**************************************************************
-   *
-   * @function:
-   *   FT_Stroker_LineTo
-   *
-   * @description:
-   *   `Draw' a single line segment in the stroker's current sub-path,
-   *   from the last position.
-   *
-   * @input:
-   *   stroker ::
-   *     The target stroker handle.
-   *
-   *   to ::
-   *     A pointer to the destination point.
-   *
-   * @return:
-   *   FreeType error code.  0~means success.
-   *
-   * @note:
-   *   You should call this function between @FT_Stroker_BeginSubPath and
-   *   @FT_Stroker_EndSubPath.
-   */
-  FT_EXPORT( FT_Error )
-  FT_Stroker_LineTo( FT_Stroker  stroker,
-                     FT_Vector*  to );
-
-
-  /**************************************************************
-   *
-   * @function:
-   *   FT_Stroker_ConicTo
-   *
-   * @description:
-   *   `Draw' a single quadratic Bézier in the stroker's current sub-path,
-   *   from the last position.
-   *
-   * @input:
-   *   stroker ::
-   *     The target stroker handle.
-   *
-   *   control ::
-   *     A pointer to a Bézier control point.
-   *
-   *   to ::
-   *     A pointer to the destination point.
-   *
-   * @return:
-   *   FreeType error code.  0~means success.
-   *
-   * @note:
-   *   You should call this function between @FT_Stroker_BeginSubPath and
-   *   @FT_Stroker_EndSubPath.
-   */
-  FT_EXPORT( FT_Error )
-  FT_Stroker_ConicTo( FT_Stroker  stroker,
-                      FT_Vector*  control,
-                      FT_Vector*  to );
-
-
-  /**************************************************************
-   *
-   * @function:
-   *   FT_Stroker_CubicTo
-   *
-   * @description:
-   *   `Draw' a single cubic Bézier in the stroker's current sub-path,
-   *   from the last position.
-   *
-   * @input:
-   *   stroker ::
-   *     The target stroker handle.
-   *
-   *   control1 ::
-   *     A pointer to the first Bézier control point.
-   *
-   *   control2 ::
-   *     A pointer to second Bézier control point.
-   *
-   *   to ::
-   *     A pointer to the destination point.
-   *
-   * @return:
-   *   FreeType error code.  0~means success.
-   *
-   * @note:
-   *   You should call this function between @FT_Stroker_BeginSubPath and
-   *   @FT_Stroker_EndSubPath.
-   */
-  FT_EXPORT( FT_Error )
-  FT_Stroker_CubicTo( FT_Stroker  stroker,
-                      FT_Vector*  control1,
-                      FT_Vector*  control2,
-                      FT_Vector*  to );
-
-
-  /**************************************************************
-   *
-   * @function:
-   *   FT_Stroker_GetBorderCounts
-   *
-   * @description:
-   *   Call this function once you have finished parsing your paths
-   *   with the stroker.  It returns the number of points and
-   *   contours necessary to export one of the `border' or `stroke'
-   *   outlines generated by the stroker.
-   *
-   * @input:
-   *   stroker ::
-   *     The target stroker handle.
-   *
-   *   border ::
-   *     The border index.
-   *
-   * @output:
-   *   anum_points ::
-   *     The number of points.
-   *
-   *   anum_contours ::
-   *     The number of contours.
-   *
-   * @return:
-   *   FreeType error code.  0~means success.
-   *
-   * @note:
-   *   When an outline, or a sub-path, is `closed', the stroker generates
-   *   two independent `border' outlines, named `left' and `right'.
-   *
-   *   When the outline, or a sub-path, is `opened', the stroker merges
-   *   the `border' outlines with caps.  The `left' border receives all
-   *   points, while the `right' border becomes empty.
-   *
-   *   Use the function @FT_Stroker_GetCounts instead if you want to
-   *   retrieve the counts associated to both borders.
-   */
-  FT_EXPORT( FT_Error )
-  FT_Stroker_GetBorderCounts( FT_Stroker        stroker,
-                              FT_StrokerBorder  border,
-                              FT_UInt          *anum_points,
-                              FT_UInt          *anum_contours );
-
-
-  /**************************************************************
-   *
-   * @function:
-   *   FT_Stroker_ExportBorder
-   *
-   * @description:
-   *   Call this function after @FT_Stroker_GetBorderCounts to
-   *   export the corresponding border to your own @FT_Outline
-   *   structure.
-   *
-   *   Note that this function appends the border points and
-   *   contours to your outline, but does not try to resize its
-   *   arrays.
-   *
-   * @input:
-   *   stroker ::
-   *     The target stroker handle.
-   *
-   *   border ::
-   *     The border index.
-   *
-   *   outline ::
-   *     The target outline handle.
-   *
-   * @note:
-   *   Always call this function after @FT_Stroker_GetBorderCounts to
-   *   get sure that there is enough room in your @FT_Outline object to
-   *   receive all new data.
-   *
-   *   When an outline, or a sub-path, is `closed', the stroker generates
-   *   two independent `border' outlines, named `left' and `right'.
-   *
-   *   When the outline, or a sub-path, is `opened', the stroker merges
-   *   the `border' outlines with caps.  The `left' border receives all
-   *   points, while the `right' border becomes empty.
-   *
-   *   Use the function @FT_Stroker_Export instead if you want to
-   *   retrieve all borders at once.
-   */
-  FT_EXPORT( void )
-  FT_Stroker_ExportBorder( FT_Stroker        stroker,
-                           FT_StrokerBorder  border,
-                           FT_Outline*       outline );
-
-
-  /**************************************************************
-   *
-   * @function:
-   *   FT_Stroker_GetCounts
-   *
-   * @description:
-   *   Call this function once you have finished parsing your paths
-   *   with the stroker.  It returns the number of points and
-   *   contours necessary to export all points/borders from the stroked
-   *   outline/path.
-   *
-   * @input:
-   *   stroker ::
-   *     The target stroker handle.
-   *
-   * @output:
-   *   anum_points ::
-   *     The number of points.
-   *
-   *   anum_contours ::
-   *     The number of contours.
-   *
-   * @return:
-   *   FreeType error code.  0~means success.
-   */
-  FT_EXPORT( FT_Error )
-  FT_Stroker_GetCounts( FT_Stroker  stroker,
-                        FT_UInt    *anum_points,
-                        FT_UInt    *anum_contours );
-
-
-  /**************************************************************
-   *
-   * @function:
-   *   FT_Stroker_Export
-   *
-   * @description:
-   *   Call this function after @FT_Stroker_GetBorderCounts to
-   *   export all borders to your own @FT_Outline structure.
-   *
-   *   Note that this function appends the border points and
-   *   contours to your outline, but does not try to resize its
-   *   arrays.
-   *
-   * @input:
-   *   stroker ::
-   *     The target stroker handle.
-   *
-   *   outline ::
-   *     The target outline handle.
-   */
-  FT_EXPORT( void )
-  FT_Stroker_Export( FT_Stroker   stroker,
-                     FT_Outline*  outline );
-
-
-  /**************************************************************
-   *
-   * @function:
-   *   FT_Stroker_Done
-   *
-   * @description:
-   *   Destroy a stroker object.
-   *
-   * @input:
-   *   stroker ::
-   *     A stroker handle.  Can be NULL.
-   */
-  FT_EXPORT( void )
-  FT_Stroker_Done( FT_Stroker  stroker );
-
-
-  /**************************************************************
-   *
-   * @function:
-   *   FT_Glyph_Stroke
-   *
-   * @description:
-   *   Stroke a given outline glyph object with a given stroker.
-   *
-   * @inout:
-   *   pglyph ::
-   *     Source glyph handle on input, new glyph handle on output.
-   *
-   * @input:
-   *   stroker ::
-   *     A stroker handle.
-   *
-   *   destroy ::
-   *     A Boolean.  If~1, the source glyph object is destroyed
-   *     on success.
-   *
-   * @return:
-   *    FreeType error code.  0~means success.
-   *
-   * @note:
-   *   The source glyph is untouched in case of error.
-   *
-   *   Adding stroke may yield a significantly wider and taller glyph
-   *   depending on how large of a radius was used to stroke the glyph.  You
-   *   may need to manually adjust horizontal and vertical advance amounts
-   *   to account for this added size.
-   */
-  FT_EXPORT( FT_Error )
-  FT_Glyph_Stroke( FT_Glyph    *pglyph,
-                   FT_Stroker   stroker,
-                   FT_Bool      destroy );
-
-
-  /**************************************************************
-   *
-   * @function:
-   *   FT_Glyph_StrokeBorder
-   *
-   * @description:
-   *   Stroke a given outline glyph object with a given stroker, but
-   *   only return either its inside or outside border.
-   *
-   * @inout:
-   *   pglyph ::
-   *     Source glyph handle on input, new glyph handle on output.
-   *
-   * @input:
-   *   stroker ::
-   *     A stroker handle.
-   *
-   *   inside ::
-   *     A Boolean.  If~1, return the inside border, otherwise
-   *     the outside border.
-   *
-   *   destroy ::
-   *     A Boolean.  If~1, the source glyph object is destroyed
-   *     on success.
-   *
-   * @return:
-   *    FreeType error code.  0~means success.
-   *
-   * @note:
-   *   The source glyph is untouched in case of error.
-   *
-   *   Adding stroke may yield a significantly wider and taller glyph
-   *   depending on how large of a radius was used to stroke the glyph.  You
-   *   may need to manually adjust horizontal and vertical advance amounts
-   *   to account for this added size.
-   */
-  FT_EXPORT( FT_Error )
-  FT_Glyph_StrokeBorder( FT_Glyph    *pglyph,
-                         FT_Stroker   stroker,
-                         FT_Bool      inside,
-                         FT_Bool      destroy );
-
-  /* */
-
-FT_END_HEADER
-
-#endif /* __FT_STROKE_H__ */
-
-
-/* END */
-
-
-/* Local Variables: */
-/* coding: utf-8    */
-/* End:             */