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authortoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
committertoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
commit47d455dd55be855e4cc691c32f687f723d9247ee (patch)
tree52e236aaa2576bdb3840ebede26619692fed6d7d /kdvi/TeXFontDefinition.h
downloadtdegraphics-47d455dd55be855e4cc691c32f687f723d9247ee.tar.gz
tdegraphics-47d455dd55be855e4cc691c32f687f723d9247ee.zip
Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.
BUG:215923 git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdegraphics@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da
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+// -*- C++ -*-
+/*
+ * The layout of a font information block.
+ * There is one of these for every loaded font or magnification thereof.
+ * Duplicates are eliminated: this is necessary because of possible recursion
+ * in virtual fonts.
+ *
+ * Also note the strange units. The design size is in 1/2^20 point
+ * units (also called micro-points), and the individual character widths
+ * are in the TFM file in 1/2^20 ems units, i.e., relative to the design size.
+ *
+ * We then change the sizes to SPELL units (unshrunk pixel / 2^16).
+ */
+
+#ifndef _FONT_H
+#define _FONT_H
+
+#include <qintdict.h>
+#include <qstring.h>
+
+#include <stdio.h>
+
+class dviRenderer;
+class TeXFont;
+
+typedef void (dviRenderer::*set_char_proc)(unsigned int, unsigned int);
+
+
+// Per character information for virtual fonts
+
+class macro {
+ public:
+ macro();
+ ~macro();
+
+ unsigned char *pos; /* address of first byte of macro */
+ unsigned char *end; /* address of last+1 byte */
+ Q_INT32 dvi_advance_in_units_of_design_size_by_2e20; /* DVI units to move reference point */
+ bool free_me; // if memory at pos should be returned on destruction
+};
+
+
+class TeXFontDefinition {
+ public:
+ // Currently, kdvi supports fonts with at most 256 characters to
+ // comply with "The DVI Driver Standard, Level 0". If you change
+ // this value here, make sure to go through all the source and
+ // ensure that character numbers are stored in ints rather than
+ // unsigned chars.
+ static const unsigned int max_num_of_chars_in_font = 256;
+ enum font_flags {
+ FONT_IN_USE = 1, // used for housekeeping
+ FONT_LOADED = 2, // if font file has been read
+ FONT_VIRTUAL = 4, // if font is virtual
+ FONT_KPSE_NAME = 8 // if kpathsea has already tried to find the font name
+ };
+
+
+ TeXFontDefinition(QString nfontname, double _displayResolution_in_dpi, Q_UINT32 chk, Q_INT32 _scaled_size_in_DVI_units,
+ class fontPool *pool, double _enlargement);
+ ~TeXFontDefinition();
+
+ void reset();
+ void fontNameReceiver(const QString&);
+
+ // Members for character fonts
+ void setDisplayResolution(double _displayResolution_in_dpi);
+
+ bool isLocated() const {return ((flags & FONT_KPSE_NAME) != 0);}
+ void markAsLocated() {flags |= FONT_KPSE_NAME;}
+
+ void mark_as_used();
+ class fontPool *font_pool; // Pointer to the pool that contains this font.
+ QString fontname; // name of font, such as "cmr10"
+ unsigned char flags; // flags byte (see values below)
+ double enlargement;
+ Q_INT32 scaled_size_in_DVI_units; // Scaled size from the font definition command; in DVI units
+ set_char_proc set_char_p; // proc used to set char
+
+ // Resolution of the display device (resolution will usually be
+ // scaled, according to the zoom)
+ double displayResolution_in_dpi;
+
+ FILE *file; // open font file or NULL
+ QString filename; // name of font file
+
+ TeXFont *font;
+ macro *macrotable; // used by (loaded) virtual fonts
+ QIntDict<TeXFontDefinition> vf_table; // used by (loaded) virtual fonts, list of fonts used by this vf,
+ // acessible by number
+ TeXFontDefinition *first_font; // used by (loaded) virtual fonts, list of fonts used by this vf
+
+#ifdef HAVE_FREETYPE
+ const QString &getFullFontName() const {return fullFontName;}
+ const QString &getFullEncodingName() const {return fullEncodingName;}
+#endif
+ const QString &getFontTypeName() const {return fontTypeName;}
+
+#ifdef HAVE_FREETYPE
+ /** For FREETYPE fonts, which use a map file, this field will
+ contain the full name of the font (e.g. 'Computer Modern'). If
+ the name does not exist, or cannot be found, this field will be
+ QString::null. Only subclasses of TeXFont should write into this
+ field. */
+ QString fullFontName;
+
+ /** For FREETYPE fonts, which use a map file, this field will
+ contain the full name of the font encoding (e.g. 'TexBase1'). If
+ the encoding name does not exist, or cannot be found, this field
+ will be QString::null. Only subclasses of TeXFont should write
+ into this field. */
+ QString fullEncodingName;
+#endif
+
+ private:
+ Q_UINT32 checksum;
+
+ /** This will be set to a human-readable description of the font,
+ e.g. "virtual" or "TeX PK", or "Type 1" */
+ QString fontTypeName;
+
+ // Functions related to virtual fonts
+ void read_VF_index(void );
+};
+
+#endif