netscape-revival
cmd/xfe/fonts.h
/* -*- Mode: C; tab-width: 8 -*-
fonts.h --- fonts, font selector, and related stuff
Copyright © 1995 Netscape Communications Corporation, all rights reserved.
Created: Erik van der Poel <erik@netscape.com>, 6-Oct-95.
*/
#ifndef __xfe_fonts_h_
#define __xfe_fonts_h_
#include <lo_ele.h>
#include <X11/Xlib.h>
/*
* defines
*/
#define FE_FONT_TYPE_X8 0x1
#define FE_FONT_TYPE_X16 0x2
#define FE_FONT_TYPE_GROUP 0x4
/* the following are macros so that we avoid the overhead of function calls */
#define FE_TEXT_EXTENTS(charset, font, string, len, fontAscent, fontDescent, \
overall) \
do \
{ \
int direction; \
int type; \
\
type = fe_CharSetInfoArray[(charset) & 0xff].type; \
\
if (type == FE_FONT_TYPE_X8) \
{ \
XTextExtents((font), (string), (len), &direction, \
(fontAscent), (fontDescent), (overall)); \
} \
else if (type == FE_FONT_TYPE_X16) \
{ \
XTextExtents16((font), (XChar2b *) (string), (len)/2, \
&direction, (fontAscent), (fontDescent), (overall)); \
} \
else \
{ \
(*fe_CharSetFuncsArray[fe_CharSetInfoArray[(charset) & 0xff]. \
info].textExtents)((font), (string), (len), \
&direction, (fontAscent), (fontDescent), (overall)); \
} \
} while (0)
#define FE_FONT_EXTENTS(charset, font, fontAscent, fontDescent) \
do \
{ \
fe_CharSetInfo *info; \
\
info = &fe_CharSetInfoArray[(charset) & 0xff]; \
\
if (info->type == FE_FONT_TYPE_GROUP) \
{ \
fe_GenericFontExtents(fe_CharSetFuncsArray[ \
fe_CharSetInfoArray[(charset) & 0xff].info]. \
numberOfFonts, (font), (fontAscent), (fontDescent)); \
} \
else \
{ \
*(fontAscent) = ((XFontStruct *) (font))->ascent; \
*(fontDescent) = ((XFontStruct *) (font))->descent; \
} \
} while (0)
#define FE_DRAW_STRING(charset, dpy, d, font, gc, x, y, string, len) \
do \
{ \
int type; \
\
type = fe_CharSetInfoArray[(charset) & 0xff].type; \
\
if (type == FE_FONT_TYPE_X8) \
{ \
XDrawString((dpy), (d), (gc), (x), (y), (string), \
(len)); \
} \
else if (type == FE_FONT_TYPE_X16) \
{ \
XDrawString16((dpy), (d), (gc), (x), (y), \
(XChar2b *) (string), (len)/2); \
} \
else \
{ \
(*fe_CharSetFuncsArray[fe_CharSetInfoArray[(charset) & 0xff]. \
info].drawString)((dpy), (d), (font), \
(gc), (x), (y), (string), (len)); \
} \
} while (0)
#define FE_DRAW_IMAGE_STRING(charset, dpy, d, font, gc, x, y, string, len) \
do \
{ \
int type; \
\
type = fe_CharSetInfoArray[(charset) & 0xff].type; \
\
if (type == FE_FONT_TYPE_X8) \
{ \
XDrawImageString((dpy), (d), (gc), (x), (y), (string), \
(len)); \
} \
else if (type == FE_FONT_TYPE_X16) \
{ \
XDrawImageString16((dpy), (d), (gc), (x), (y), \
(XChar2b *) (string), (len)/2); \
} \
else \
{ \
(*fe_CharSetFuncsArray[fe_CharSetInfoArray[(charset) & 0xff]. \
info].drawImageString)((dpy), (d), \
(font), (gc), (x), (y), (string), (len)); \
} \
} while (0)
#define FE_SET_GC_FONT(charset, gc, font, flags) \
do \
{ \
fe_CharSetInfo *info; \
\
info = &fe_CharSetInfoArray[(charset) & 0xff]; \
\
if (info->type != FE_FONT_TYPE_GROUP) \
{ \
(gc)->font = ((XFontStruct *) (font))->fid; \
*(flags) |= GCFont; \
} \
} while (0)
/*
* typedefs and structs
*/
typedef void *fe_Font;
typedef struct fe_FontFace fe_FontFace;
struct fe_FontFace
{
fe_FontFace *next;
char *longXLFDFontName;
fe_Font font;
};
typedef struct fe_FontSize fe_FontSize;
struct fe_FontSize
{
fe_FontSize *next;
int size;
/* whether the user has selected this size in preferences */
unsigned int selected : 1;
/* 0 = normal, 1 = bold, 2 = italic, 3 = boldItalic */
fe_FontFace *faces[4];
};
typedef struct fe_FontFamily
{
/* displayed name of this family/foundry */
char *name;
/* XLFD name of foundry */
char *foundry;
/* XLFD name of family */
char *family;
/* whether the user has selected this family in preferences */
unsigned int selected : 1;
/* whether not to allow scaling for this family */
unsigned int allowScaling : 1;
/* whether the htmlSizes have been computer or not */
unsigned int htmlSizesComputed : 1;
/* one for each document size, 1-7 */
fe_FontSize *htmlSizes[7];
/* selected size if scaled font */
int scaledSize;
/* pointer to all pixel sizes within this family */
fe_FontSize *pixelSizes;
/* allocated size of pixelSizes array */
short pixelAlloc;
/* actual number of pixel sizes */
short numberOfPixelSizes;
/* pointer to all point sizes within this family */
fe_FontSize *pointSizes;
/* allocated size of pointSizes array */
short pointAlloc;
/* actual number of point sizes */
short numberOfPointSizes;
} fe_FontFamily;
/* one for each pitch: proportional and fixed */
typedef struct fe_FontPitch
{
/* pointer to size menu for this pitch */
Widget sizeMenu;
/* pointer to all families of this charset/pitch */
fe_FontFamily *families;
/* allocated size of families array */
short alloc;
/* actual number of families */
short numberOfFamilies;
/* selected family */
fe_FontFamily *selectedFamily;
} fe_FontPitch;
/* we have one of these per charset */
typedef struct fe_FontCharSet
{
/* displayed name of this charset */
char *name;
/* official MIME name of this charset */
char *mimeName;
/* whether the user has selected this one in the preferences */
unsigned int selected : 1;
/* the two pitches: 0 = proportional and 1 = fixed */
fe_FontPitch pitches[2];
} fe_FontCharSet;
typedef struct fe_CharSetInfo
{
int16 charsetID;
unsigned char type;
unsigned char info;
} fe_CharSetInfo;
typedef fe_Font (*fe_LoadFontFunc)(MWContext *context, char *familyName,
int sizeNum, int fontmask, int charset, int pitch, int faceNum,
Display *dpy);
typedef void (*fe_TextExtentsFunc)(fe_Font font, char *string, int len,
int *dir, int *fontAscent, int *fontDescent, XCharStruct *overall);
typedef void (*fe_DrawStringFunc)(Display *dpy, Drawable d, fe_Font font,
GC gc, int x, int y, char *string, int len);
typedef void (*fe_DrawImageStringFunc)(Display *dpy, Drawable d, fe_Font font,
GC gc, int x, int y, char *string, int len);
typedef struct fe_CharSetFuncs
{
unsigned char numberOfFonts;
fe_LoadFontFunc loadFont;
fe_TextExtentsFunc textExtents;
fe_DrawStringFunc drawString;
fe_DrawImageStringFunc drawImageString;
} fe_CharSetFuncs;
typedef struct fe_FontSettings fe_FontSettings;
struct fe_FontSettings
{
fe_FontSettings *next;
char *spec;
};
/*
* public data
*/
extern fe_FontCharSet fe_FontCharSets[];
extern unsigned char fe_SortedFontCharSets[];
extern fe_CharSetInfo fe_CharSetInfoArray[];
extern fe_CharSetFuncs fe_CharSetFuncsArray[];
/*
* public functions
*/
void fe_ComputeFontSizeTable(fe_FontFamily *family);
void fe_FreeFontGroups(void);
void fe_FreeFonts(void);
void fe_FreeFontSettings(fe_FontSettings *set);
void fe_FreeFontSizeTable(fe_FontFamily *family);
void fe_GenericFontExtents(int num, fe_Font font, int *fontAscent,
int *fontDescent);
char *fe_GetFontCharSetSetting(void);
XtPointer fe_GetFont(MWContext *context, int sizeNum, int fontmask);
XtPointer fe_GetFontOrFontSet(MWContext *context, char *familyName,
int sizeNum, int fontmask, XmFontType *type);
XtPointer fe_GetFontOrFontSetFromFace(MWContext *context, LO_TextAttr *attr,
char *net_font_face, int sizeNum,
int fontmask, XmFontType *type);
fe_FontSettings *fe_GetFontSettings(void);
int fe_GetStrikePosition(int charset, fe_Font font);
int fe_GetUnderlinePosition(int charset);
void fe_InitFonts(Display *dpy);
fe_Font fe_LoadFont(MWContext *context, int16 *charset, char *familyName,
int size, int fontmask);
fe_Font fe_LoadFontFromFace(MWContext *context, LO_TextAttr *attr, int16 *charset,
char *net_font_face, int size, int fontmask);
void fe_ReadFontCharSet(char *charset);
void fe_ReadFontSpec(char *spec);
void fe_SetFontSettings(fe_FontSettings *set);
#endif /* __xfe_fonts_h_ */