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LASi::PostscriptDocument

LASi::PostscriptDocument Class Reference

Composes Postscript document as three separate and independant streams for header, body and footer. More...

#include <LASi.h>

List of all members.

Public Member Functions

 PostscriptDocument ()
 ~PostscriptDocument ()
void setFont (const char *const family="sans", LASi::FontStyle=LASi::NORMAL_STYLE, LASi::FontWeight=LASi::NORMAL_WEIGHT, LASi::FontVariant=LASi::NORMAL_VARIANT, LASi::FontStretch=LASi::NORMAL_STRETCH)
 Sets the font that all subsequent text written to bodyStream() or footerStream() will be rendered with.
void setFontSize (const double size)
 Sets the font size, in points, that all subsequent text written to bodyStream() or footerStream() will be rendered with.
std::ostringstream & osHeader ()
 Returns stream for Postscript header.
oPostscriptStream & osBody ()
 Returns stream for Postscript body.
oPostscriptStream & osFooter ()
 Returns stream for Postscript footer.
void write (std::ostream &os, double llx=0, double lly=0, double urx=0, double ury=0)
 Closes all streams and writes completed Postscript document to os.
void get_dimensions (const char *s, double *lineSpacing, double *xAdvance=NULL, double *yMin=NULL, double *yMax=NULL)
 Return string dimensions: lineSpacing: inter-line spacing xAdvance: width of the string yMin: y-coordinate bounding the lowest descender, Indic under-consonantal vowel, etc.
void get_dimensions (std::string s, double *lineSpacing, double *xAdvance=NULL, double *yMin=NULL, double *yMax=NULL)

Protected Types

typedef std::map< GlyphId,
FreetypeGlyphMgr > 		GlyphMap
 Maps glyph routine name to FT_Glyph instance.
typedef void(PostscriptDocument::* GLYPH_FUNC )(const GlyphMap::value_type &, void *contextData)
 Pointer to a function that takes a reference to a glyph and to x and y coordinates.

Protected Member Functions

void invoke_glyph_routine (const GlyphMap::value_type &, void *contextData)
void accrue_dimensions (const GlyphMap::value_type &, void *contextData1)
void for_each_glyph_do (const std::string &, const GLYPH_FUNC, void *contextData)
 Decomposes string into glyphs and applies GLYPH_FUNC to each glyph.
PangoContext * pangoContext () const
std::string glyphProcName () const
double getFontSize ()

Friends

class write_glyph_routine_to_stream
class show

Classes

class  GlyphId
 For internal use only. More...
class  write_glyph_routine_to_stream
 For internal use only. More...

Detailed Description

Composes Postscript document as three separate and independant streams for header, body and footer.

Body and footer streams respond to LASi::show applicator which generates Postscript commands to display a string by using glyph routines instead of a Postscript font.

Member Typedef Documentation

typedef void(PostscriptDocument::* LASi::PostscriptDocument::GLYPH_FUNC)(const GlyphMap::value_type &, void *contextData) [protected]
 

Pointer to a function that takes a reference to a glyph and to x and y coordinates.

May return new x and y coordinates.

typedef std::map<GlyphId, FreetypeGlyphMgr> LASi::PostscriptDocument::GlyphMap [protected]
 

Maps glyph routine name to FT_Glyph instance.

Constructor & Destructor Documentation

LASi::PostscriptDocument::PostscriptDocument (   ) 
 

LASi::PostscriptDocument::~PostscriptDocument (   ) 
 

Member Function Documentation

void LASi::PostscriptDocument::accrue_dimensions (  const GlyphMap::value_type &  ,
void *  contextData1
)  [protected]
 

void LASi::PostscriptDocument::for_each_glyph_do (  const std::string &  ,
const   GLYPH_FUNC,
void *  contextData
)  [protected]
 

Decomposes string into glyphs and applies GLYPH_FUNC to each glyph.

void LASi::PostscriptDocument::get_dimensions (  std::string  s,
double *  lineSpacing,
double *  xAdvance = NULL,
double *  yMin = NULL,
double *  yMax = NULL
) 
 

void LASi::PostscriptDocument::get_dimensions (  const char *  s,
double *  lineSpacing,
double *  xAdvance = NULL,
double *  yMin = NULL,
double *  yMax = NULL
) 
 

Return string dimensions: lineSpacing: inter-line spacing xAdvance: width of the string yMin: y-coordinate bounding the lowest descender, Indic under-consonantal vowel, etc.

yMax: y-coordinate bounding the highest ascender, diacritic, Indic over-letter vowel, etc.

double LASi::PostscriptDocument::getFontSize (   )  [inline, protected]
 

Returns:
font size in points (1/72 in.)

std::string LASi::PostscriptDocument::glyphProcName (   )  const [protected]
 

Returns:
name of Postscript glyph routine

void LASi::PostscriptDocument::invoke_glyph_routine (  const GlyphMap::value_type &  ,
void *  contextData
)  [protected]
 

oPostscriptStream& LASi::PostscriptDocument::osBody (   )  [inline]
 

Returns stream for Postscript body.

oPostscriptStream& LASi::PostscriptDocument::osFooter (   )  [inline]
 

Returns stream for Postscript footer.

std::ostringstream& LASi::PostscriptDocument::osHeader (   )  [inline]
 

Returns stream for Postscript header.

PangoContext* LASi::PostscriptDocument::pangoContext (   )  const [protected]
 

void LASi::PostscriptDocument::setFont (  const char *const   family = "sans",
LASi::FontStyle  = LASi::NORMAL_STYLE,
LASi::FontWeight  = LASi::NORMAL_WEIGHT,
LASi::FontVariant  = LASi::NORMAL_VARIANT,
LASi::FontStretch  = LASi::NORMAL_STRETCH
) 
 

Sets the font that all subsequent text written to bodyStream() or footerStream() will be rendered with.

void LASi::PostscriptDocument::setFontSize (  const double  size  )  [inline]
 

Sets the font size, in points, that all subsequent text written to bodyStream() or footerStream() will be rendered with.

void LASi::PostscriptDocument::write (  std::ostream &  os,
double  llx = 0,
double  lly = 0,
double  urx = 0,
double  ury = 0
) 
 

Closes all streams and writes completed Postscript document to os.

Header will include glyph routines for all text glyphs in body and footer.

2006.05.01.ET Addendum: To create an EPS document, just include the the four BoundingBox coordinates llx, lly, urx, ury (dimensions in points). These are optional parameters -- When not included, you'll get a regular PS document. When included, you'll get an EPS document.

Friends And Related Function Documentation

friend class show [friend]
 

friend class write_glyph_routine_to_stream [friend]
 

The documentation for this class was generated from the following file:
Generated on Mon Aug 28 14:25:44 2006 for LASi by  doxygen 1.4.4