LASi
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Composes Postscript document as three separate and independant streams for header, body and footer. More...
#include <LASi.h>
Classes | |
class | GlyphId |
For internal use only. More... | |
class | write_glyph_routine_to_stream |
For internal use only. More... |
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 *contextData) |
void | for_each_glyph_do (const std::string &, const GLYPH_FUNC, void *contextData, bool applyOffset=false) |
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 |
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.
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Pointer to a function that takes a reference to a glyph and to x and y coordinates.
May return new x and y coordinates.
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Maps glyph routine name to FT_Glyph instance.
LASi::PostscriptDocument::PostscriptDocument | ( | ) |
LASi::PostscriptDocument::~PostscriptDocument | ( | ) |
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Decomposes string into glyphs and applies GLYPH_FUNC to each glyph.
void LASi::PostscriptDocument::get_dimensions | ( | const char * | s, |
double * | lineSpacing, | ||
double * | xAdvance = NULL , |
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double * | yMin = NULL , |
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double * | yMax = NULL |
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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.
void LASi::PostscriptDocument::get_dimensions | ( | std::string | s, |
double * | lineSpacing, | ||
double * | xAdvance = NULL , |
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double * | yMin = NULL , |
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double * | yMax = NULL |
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Returns stream for Postscript body.
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Returns stream for Postscript footer.
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Returns stream for Postscript header.
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void LASi::PostscriptDocument::setFont | ( | const char *const | family = "sans" , |
LASi::FontStyle | = LASi::NORMAL_STYLE , |
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LASi::FontWeight | = LASi::NORMAL_WEIGHT , |
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LASi::FontVariant | = LASi::NORMAL_VARIANT , |
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LASi::FontStretch | = LASi::NORMAL_STRETCH |
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Sets the font that all subsequent text written to bodyStream() or footerStream() will be rendered with.
Referenced by LASi::setFont::apply().
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Sets the font size, in points, that all subsequent text written to bodyStream() or footerStream() will be rendered with.
Referenced by LASi::setFontSize::apply().
void LASi::PostscriptDocument::write | ( | std::ostream & | os, |
double | llx = 0 , |
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double | lly = 0 , |
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double | urx = 0 , |
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double | ury = 0 |
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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.
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