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-rw-r--r-- | src/lib/freetype/ftglyph.inc | 435 |
1 files changed, 0 insertions, 435 deletions
diff --git a/src/lib/freetype/ftglyph.inc b/src/lib/freetype/ftglyph.inc deleted file mode 100644 index 0d4acc99..00000000 --- a/src/lib/freetype/ftglyph.inc +++ /dev/null @@ -1,435 +0,0 @@ -(***************************************************************************) -(* *) -(* ftglyph.h *) -(* *) -(* FreeType convenience functions to handle glyphs (specification). *) -(* *) -(* Copyright 1996-2001, 2002, 2003, 2006 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. *) -(* *) -(***************************************************************************) -(***************************************************************************) -(* Pascal port by the UltraStar Deluxe Team *) -(***************************************************************************) - - - (*************************************************************************) - (* *) - (* This file contains the definition of several convenience functions *) - (* that can be used by client applications to easily retrieve glyph *) - (* bitmaps and outlines from a given face. *) - (* *) - (* These functions should be optional if you are writing a font server *) - (* or text layout engine on top of FreeType. However, they are pretty *) - (* handy for many other simple uses of the library. *) - (* *) - (*************************************************************************) - - (*************************************************************************) - (* *) - (* <Section> *) - (* glyph_management *) - (* *) - (* <Title> *) - (* Glyph Management *) - (* *) - (* <Abstract> *) - (* Generic interface to manage individual glyph data. *) - (* *) - (* <Description> *) - (* This section contains definitions used to manage glyph data *) - (* through generic FT_Glyph objects. Each of them can contain a *) - (* bitmap, a vector outline, or even images in other formats. *) - (* *) - (*************************************************************************) - -{$IFDEF TYPE_DECL} - - (* forward declaration to a private type *) - PFT_Glyph_Class = Pointer; - - - (*************************************************************************) - (* *) - (* <Type> *) - (* FT_Glyph *) - (* *) - (* <Description> *) - (* Handle to an object used to model generic glyph images. It is a *) - (* pointer to the @FT_GlyphRec structure and can contain a glyph *) - (* bitmap or pointer. *) - (* *) - (* <Note> *) - (* Glyph objects are not owned by the library. You must thus release *) - (* them manually (through @FT_Done_Glyph) _before_ calling *) - (* @FT_Done_FreeType. *) - (* *) - FT_Glyph = ^FT_GlyphRec; - - (*************************************************************************) - (* *) - (* <Struct> *) - (* FT_GlyphRec *) - (* *) - (* <Description> *) - (* The root glyph structure contains a given glyph image plus its *) - (* advance width in 16.16 fixed float format. *) - (* *) - (* <Fields> *) - (* library :: A handle to the FreeType library object. *) - (* *) - (* clazz :: A pointer to the glyph's class. Private. *) - (* *) - (* format :: The format of the glyph's image. *) - (* *) - (* advance :: A 16.16 vector that gives the glyph's advance width. *) - (* *) - FT_GlyphRec = record - library_: FT_Library; - clazz: PFT_Glyph_Class; - format: FT_Glyph_Format; - advance: FT_Vector; - end; - - - (*************************************************************************) - (* *) - (* <Type> *) - (* FT_BitmapGlyph *) - (* *) - (* <Description> *) - (* A handle to an object used to model a bitmap glyph image. This is *) - (* a sub-class of @FT_Glyph, and a pointer to @FT_BitmapGlyphRec. *) - (* *) - FT_BitmapGlyph = ^FT_BitmapGlyphRec; - - (*************************************************************************) - (* *) - (* <Struct> *) - (* FT_BitmapGlyphRec *) - (* *) - (* <Description> *) - (* A structure used for bitmap glyph images. This really is a *) - (* `sub-class' of `FT_GlyphRec'. *) - (* *) - (* <Fields> *) - (* root :: The root FT_Glyph fields. *) - (* *) - (* left :: The left-side bearing, i.e., the horizontal distance *) - (* from the current pen position to the left border of the *) - (* glyph bitmap. *) - (* *) - (* top :: The top-side bearing, i.e., the vertical distance from *) - (* the current pen position to the top border of the glyph *) - (* bitmap. This distance is positive for upwards-y! *) - (* *) - (* bitmap :: A descriptor for the bitmap. *) - (* *) - (* <Note> *) - (* You can typecast FT_Glyph to FT_BitmapGlyph if you have *) - (* glyph->format == FT_GLYPH_FORMAT_BITMAP. This lets you access *) - (* the bitmap's contents easily. *) - (* *) - (* The corresponding pixel buffer is always owned by the BitmapGlyph *) - (* and is thus created and destroyed with it. *) - (* *) - FT_BitmapGlyphRec = record - root: FT_GlyphRec; - left: FT_Int; - top: FT_Int; - bitmap: FT_Bitmap; - end; - - - (*************************************************************************) - (* *) - (* <Type> *) - (* FT_OutlineGlyph *) - (* *) - (* <Description> *) - (* A handle to an object used to model an outline glyph image. This *) - (* is a sub-class of @FT_Glyph, and a pointer to @FT_OutlineGlyphRec. *) - (* *) - FT_OutlineGlyph = ^FT_OutlineGlyphRec; - - - (*************************************************************************) - (* *) - (* <Struct> *) - (* FT_OutlineGlyphRec *) - (* *) - (* <Description> *) - (* A structure used for outline (vectorial) glyph images. This *) - (* really is a `sub-class' of `FT_GlyphRec'. *) - (* *) - (* <Fields> *) - (* root :: The root FT_Glyph fields. *) - (* *) - (* outline :: A descriptor for the outline. *) - (* *) - (* <Note> *) - (* You can typecast FT_Glyph to FT_OutlineGlyph if you have *) - (* glyph->format == FT_GLYPH_FORMAT_OUTLINE. This lets you access *) - (* the outline's content easily. *) - (* *) - (* As the outline is extracted from a glyph slot, its coordinates are *) - (* expressed normally in 26.6 pixels, unless the flag *) - (* FT_LOAD_NO_SCALE was used in FT_Load_Glyph() or FT_Load_Char(). *) - (* *) - (* The outline's tables are always owned by the object and are *) - (* destroyed with it. *) - (* *) - FT_OutlineGlyphRec = record - root: FT_GlyphRec; - outline: FT_Outline; - end; - -{$ELSE TYPE_DECL} - - (*************************************************************************) - (* *) - (* <Function> *) - (* FT_Get_Glyph *) - (* *) - (* <Description> *) - (* A function used to extract a glyph image from a slot. *) - (* *) - (* <Input> *) - (* slot :: A handle to the source glyph slot. *) - (* *) - (* <Output> *) - (* aglyph :: A handle to the glyph object. *) - (* *) - (* <Return> *) - (* FreeType error code. 0 means success. *) - (* *) - function FT_Get_Glyph( - slot: FT_GlyphSlot; - out aglyph: FT_Glyph ): FT_Error; - cdecl; external ft_lib name 'FT_Get_Glyph'; - - (*************************************************************************) - (* *) - (* <Function> *) - (* FT_Glyph_Copy *) - (* *) - (* <Description> *) - (* A function used to copy a glyph image. Note that the created *) - (* @FT_Glyph object must be released with @FT_Done_Glyph. *) - (* *) - (* <Input> *) - (* source :: A handle to the source glyph object. *) - (* *) - (* <Output> *) - (* target :: A handle to the target glyph object. 0~in case of *) - (* error. *) - (* *) - (* <Return> *) - (* FreeType error code. 0~means success. *) - (* *) - function FT_Glyph_Copy(source: FT_Glyph; - var target: FT_Glyph ): FT_Error; - cdecl; external ft_lib name 'FT_Glyph_Copy'; - -{$ENDIF TYPE_DECL} -{$IFDEF TYPE_DECL} - - (*************************************************************************) - (* *) - (* <Enum> *) - (* FT_Glyph_BBox_Mode *) - (* *) - (* <Description> *) - (* The mode how the values of @FT_Glyph_Get_CBox are returned. *) - (* *) - (* <Values> *) - (* FT_GLYPH_BBOX_UNSCALED :: *) - (* Return unscaled font units. *) - (* *) - (* FT_GLYPH_BBOX_SUBPIXELS :: *) - (* Return unfitted 26.6 coordinates. *) - (* *) - (* FT_GLYPH_BBOX_GRIDFIT :: *) - (* Return grid-fitted 26.6 coordinates. *) - (* *) - (* FT_GLYPH_BBOX_TRUNCATE :: *) - (* Return coordinates in integer pixels. *) - (* *) - (* FT_GLYPH_BBOX_PIXELS :: *) - (* Return grid-fitted pixel coordinates. *) - (* *) - FT_Glyph_BBox_Mode = cint; -{$ELSE TYPE_DECL} -const - FT_GLYPH_BBOX_UNSCALED = 0; - FT_GLYPH_BBOX_SUBPIXELS = 0; - FT_GLYPH_BBOX_GRIDFIT = 1; - FT_GLYPH_BBOX_TRUNCATE = 2; - FT_GLYPH_BBOX_PIXELS = 3; - - - (*************************************************************************) - (* *) - (* <Function> *) - (* FT_Glyph_Get_CBox *) - (* *) - (* <Description> *) - (* Return a glyph's `control box'. The control box encloses all the *) - (* outline's points, including Bézier control points. Though it *) - (* coincides with the exact bounding box for most glyphs, it can be *) - (* slightly larger in some situations (like when rotating an outline *) - (* which contains Bézier outside arcs). *) - (* *) - (* Computing the control box is very fast, while getting the bounding *) - (* box can take much more time as it needs to walk over all segments *) - (* and arcs in the outline. To get the latter, you can use the *) - (* `ftbbox' component which is dedicated to this single task. *) - (* *) - (* <Input> *) - (* glyph :: A handle to the source glyph object. *) - (* *) - (* mode :: The mode which indicates how to interpret the returned *) - (* bounding box values. *) - (* *) - (* <Output> *) - (* acbox :: The glyph coordinate bounding box. Coordinates are *) - (* expressed in 1/64th of pixels if it is grid-fitted. *) - (* *) - (* <Note> *) - (* Coordinates are relative to the glyph origin, using the Y-upwards *) - (* convention. *) - (* *) - (* If the glyph has been loaded with @FT_LOAD_NO_SCALE, `bbox_mode' *) - (* must be set to @FT_GLYPH_BBOX_UNSCALED to get unscaled font *) - (* units in 26.6 pixel format. The value @FT_GLYPH_BBOX_SUBPIXELS *) - (* is another name for this constant. *) - (* *) - (* Note that the maximum coordinates are exclusive, which means that *) - (* one can compute the width and height of the glyph image (be it in *) - (* integer or 26.6 pixels) as: *) - (* *) - (* { *) - (* width = bbox.xMax - bbox.xMin; *) - (* height = bbox.yMax - bbox.yMin; *) - (* } *) - (* *) - (* Note also that for 26.6 coordinates, if `bbox_mode' is set to *) - (* @FT_GLYPH_BBOX_GRIDFIT, the coordinates will also be grid-fitted, *) - (* which corresponds to: *) - (* *) - (* { *) - (* bbox.xMin = FLOOR(bbox.xMin); *) - (* bbox.yMin = FLOOR(bbox.yMin); *) - (* bbox.xMax = CEILING(bbox.xMax); *) - (* bbox.yMax = CEILING(bbox.yMax); *) - (* } *) - (* *) - (* To get the bbox in pixel coordinates, set `bbox_mode' to *) - (* @FT_GLYPH_BBOX_TRUNCATE. *) - (* *) - (* To get the bbox in grid-fitted pixel coordinates, set `bbox_mode' *) - (* to @FT_GLYPH_BBOX_PIXELS. *) - (* *) - procedure FT_Glyph_Get_CBox( glyph: FT_Glyph; - bbox_mode: FT_UInt; - out acbox: FT_BBox ); - cdecl; external ft_lib name 'FT_Glyph_Get_CBox'; - - - (*************************************************************************) - (* *) - (* <Function> *) - (* FT_Glyph_To_Bitmap *) - (* *) - (* <Description> *) - (* Converts a given glyph object to a bitmap glyph object. *) - (* *) - (* <InOut> *) - (* the_glyph :: A pointer to a handle to the target glyph. *) - (* *) - (* <Input> *) - (* render_mode :: An enumeration that describe how the data is *) - (* rendered. *) - (* *) - (* origin :: A pointer to a vector used to translate the glyph *) - (* image before rendering. Can be 0 (if no *) - (* translation). The origin is expressed in *) - (* 26.6 pixels. *) - (* *) - (* destroy :: A boolean that indicates that the original glyph *) - (* image should be destroyed by this function. It is *) - (* never destroyed in case of error. *) - (* *) - (* <Return> *) - (* FreeType error code. 0 means success. *) - (* *) - (* <Note> *) - (* The glyph image is translated with the `origin' vector before *) - (* rendering. *) - (* *) - (* The first parameter is a pointer to a FT_Glyph handle, that will *) - (* be replaced by this function. Typically, you would use (omitting *) - (* error handling): *) - (* *) - (* *) - (* { *) - (* FT_Glyph glyph; *) - (* FT_BitmapGlyph glyph_bitmap; *) - (* *) - (* *) - (* // load glyph *) - (* error = FT_Load_Char( face, glyph_index, FT_LOAD_DEFAUT ); *) - (* *) - (* // extract glyph image *) - (* error = FT_Get_Glyph( face->glyph, &glyph ); *) - (* *) - (* // convert to a bitmap (default render mode + destroy old) *) - (* if ( glyph->format != FT_GLYPH_FORMAT_BITMAP ) *) - (* { *) - (* error = FT_Glyph_To_Bitmap( &glyph, FT_RENDER_MODE_DEFAULT, *) - (* 0, 1 ); *) - (* if ( error ) // glyph unchanged *) - (* ... *) - (* } *) - (* *) - (* // access bitmap content by typecasting *) - (* glyph_bitmap = (FT_BitmapGlyph)glyph; *) - (* *) - (* // do funny stuff with it, like blitting/drawing *) - (* ... *) - (* *) - (* // discard glyph image (bitmap or not) *) - (* FT_Done_Glyph( glyph ); *) - (* } *) - (* *) - (* *) - (* This function does nothing if the glyph format isn't scalable. *) - (* *) - function FT_Glyph_To_Bitmap(var the_glyph: FT_Glyph; - render_mode: FT_Render_Mode; - origin: PFT_Vector; - destroy: FT_Bool ): FT_Error; - cdecl; external ft_lib name 'FT_Glyph_To_Bitmap'; - - - (*************************************************************************) - (* *) - (* <Function> *) - (* FT_Done_Glyph *) - (* *) - (* <Description> *) - (* Destroys a given glyph. *) - (* *) - (* <Input> *) - (* glyph :: A handle to the target glyph object. *) - (* *) - procedure FT_Done_Glyph( glyph: FT_Glyph ); - cdecl; external ft_lib name 'FT_Done_Glyph'; - -{$ENDIF TYPE_DECL} |