/* FreeType glyph image formats and default raster interface */
/* (specification). */
/* */
-/* Copyright 1996-2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 by */
+/* Copyright 1996-2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, */
+/* 2010 by */
/* David Turner, Robert Wilhelm, and Werner Lemberg. */
/* */
/* This file is part of the FreeType project, and may only be used, */
/* FT_Pos */
/* */
/* <Description> */
- /* The type FT_Pos is a 32-bit integer used to store vectorial */
- /* coordinates. Depending on the context, these can represent */
- /* distances in integer font units, or 16.16, or 26.6 fixed float */
- /* pixel coordinates. */
+ /* The type FT_Pos is used to store vectorial coordinates. Depending */
+ /* on the context, these can represent distances in integer font */
+ /* units, or 16.16, or 26.6 fixed float pixel coordinates. */
/* */
typedef signed long FT_Pos;
/* */
/* yMax :: The vertical maximum (top-most). */
/* */
+ /* <Note> */
+ /* The bounding box is specified with the coordinates of the lower */
+ /* left and the upper right corner. In PostScript, those values are */
+ /* often called (llx,lly) and (urx,ury), respectively. */
+ /* */
+ /* If `yMin' is negative, this value gives the glyph's descender. */
+ /* Otherwise, the glyph doesn't descend below the baseline. */
+ /* Similarly, if `ymax' is positive, this value gives the glyph's */
+ /* ascender. */
+ /* */
+ /* `xMin' gives the horizontal distance from the glyph's origin to */
+ /* the left edge of the glyph's bounding box. If `xMin' is negative, */
+ /* the glyph extends to the left of the origin. */
+ /* */
typedef struct FT_BBox_
{
FT_Pos xMin, yMin;
/* flow. In all cases, the pitch is an offset to add */
/* to a bitmap pointer in order to go down one row. */
/* */
+ /* Note that `padding' means the alignment of a */
+ /* bitmap to a byte border, and FreeType functions */
+ /* normally align to the smallest possible integer */
+ /* value. */
+ /* */
+ /* For the B/W rasterizer, `pitch' is always an even */
+ /* number. */
+ /* */
+ /* To change the pitch of a bitmap (say, to make it a */
+ /* multiple of 4), use @FT_Bitmap_Convert. */
+ /* Alternatively, you might use callback functions to */
+ /* directly render to the application's surface; see */
+ /* the file `example2.cpp' in the tutorial for a */
+ /* demonstration. */
+ /* */
/* buffer :: A typeless pointer to the bitmap buffer. This */
/* value should be aligned on 32-bit boundaries in */
/* most cases. */
/* FT_Outline_ConicToFunc */
/* */
/* <Description> */
- /* A function pointer type use to describe the signature of a `conic */
- /* to' function during outline walking/decomposition. */
+ /* A function pointer type used to describe the signature of a `conic */
+ /* to' function during outline walking or decomposition. */
/* */
/* A `conic to' is emitted to indicate a second-order Bézier arc in */
/* the outline. */
/* */
/* <Description> */
/* A function pointer type used to describe the signature of a `cubic */
- /* to' function during outline walking/decomposition. */
+ /* to' function during outline walking or decomposition. */
/* */
/* A `cubic to' is emitted to indicate a third-order Bézier arc. */
/* */
/* */
/* <Description> */
/* A structure to hold various function pointers used during outline */
- /* decomposition in order to emit segments, conic, and cubic Béziers, */
- /* as well as `move to' and `close to' operations. */
+ /* decomposition in order to emit segments, conic, and cubic Béziers. */
/* */
/* <Fields> */
/* move_to :: The `move to' emitter. */
/* y' = (x << shift) - delta */
/* } */
/* */
- /* Set the value of `shift' and `delta' to~0 to get the original */
+ /* Set the values of `shift' and `delta' to~0 to get the original */
/* point coordinates. */
/* */
typedef struct FT_Outline_Funcs_
projects / platform / framework / web / crosswalk.git / blobdiff