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putty-source/unix/gtkfont.c
Simon Tatham 78466a6b68 Stop using GDK's wrapper on the X11 font functions (GdkFont). All X11 
font operations are now done directly using Xlib calls, and the only
interaction with GDK within the x11font mechanism is to get the X ids
for drawables, GCs and the X display itself.

This should remove an obstacle to porting to GTK3, and also makes the
XFontStruct for loaded fonts more readily available, which I hope will
come in handy for another plan I have in mind.

[originally from svn r9289]
2011-09-16 08:49:08 +00:00

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/*
* Unified font management for GTK.
*
* PuTTY is willing to use both old-style X server-side bitmap
* fonts _and_ GTK2/Pango client-side fonts. This requires us to
* do a bit of work to wrap the two wildly different APIs into
* forms the rest of the code can switch between seamlessly, and
* also requires a custom font selector capable of handling both
* types of font.
*/
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include <gtk/gtk.h>
#include <gdk/gdkkeysyms.h>
#include <gdk/gdkx.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/Xatom.h>
#include "putty.h"
#include "gtkfont.h"
#include "tree234.h"
/*
* Future work:
*
* - it would be nice to have a display of the current font name,
* and in particular whether it's client- or server-side,
* during the progress of the font selector.
*
* - it would be nice if we could move the processing of
* underline and VT100 double width into this module, so that
* instead of using the ghastly pixmap-stretching technique
* everywhere we could tell the Pango backend to scale its
* fonts to double size properly and at full resolution.
* However, this requires me to learn how to make Pango stretch
* text to an arbitrary aspect ratio (for double-width only
* text, which perversely is harder than DW+DH), and right now
* I haven't the energy.
*/
/*
* Ad-hoc vtable mechanism to allow font structures to be
* polymorphic.
*
* Any instance of `unifont' used in the vtable functions will
* actually be the first element of a larger structure containing
* data specific to the subtype. This is permitted by the ISO C
* provision that one may safely cast between a pointer to a
* structure and a pointer to its first element.
*/
#define FONTFLAG_CLIENTSIDE 0x0001
#define FONTFLAG_SERVERSIDE 0x0002
#define FONTFLAG_SERVERALIAS 0x0004
#define FONTFLAG_NONMONOSPACED 0x0008
#define FONTFLAG_SORT_MASK 0x0007 /* used to disambiguate font families */
typedef void (*fontsel_add_entry)(void *ctx, const char *realfontname,
const char *family, const char *charset,
const char *style, const char *stylekey,
int size, int flags,
const struct unifont_vtable *fontclass);
struct unifont_vtable {
/*
* `Methods' of the `class'.
*/
unifont *(*create)(GtkWidget *widget, const char *name, int wide, int bold,
int shadowoffset, int shadowalways);
void (*destroy)(unifont *font);
void (*draw_text)(GdkDrawable *target, GdkGC *gc, unifont *font,
int x, int y, const char *string, int len, int wide,
int bold, int cellwidth);
void (*enum_fonts)(GtkWidget *widget,
fontsel_add_entry callback, void *callback_ctx);
char *(*canonify_fontname)(GtkWidget *widget, const char *name, int *size,
int *flags, int resolve_aliases);
char *(*scale_fontname)(GtkWidget *widget, const char *name, int size);
/*
* `Static data members' of the `class'.
*/
const char *prefix;
};
/* ----------------------------------------------------------------------
* X11 font implementation, directly using Xlib calls.
*/
static void x11font_draw_text(GdkDrawable *target, GdkGC *gc, unifont *font,
int x, int y, const char *string, int len,
int wide, int bold, int cellwidth);
static unifont *x11font_create(GtkWidget *widget, const char *name,
int wide, int bold,
int shadowoffset, int shadowalways);
static void x11font_destroy(unifont *font);
static void x11font_enum_fonts(GtkWidget *widget,
fontsel_add_entry callback, void *callback_ctx);
static char *x11font_canonify_fontname(GtkWidget *widget, const char *name,
int *size, int *flags,
int resolve_aliases);
static char *x11font_scale_fontname(GtkWidget *widget, const char *name,
int size);
struct x11font {
struct unifont u;
/*
* Actual font objects. We store a number of these, for
* automatically guessed bold and wide variants.
*
* The parallel array `allocated' indicates whether we've
* tried to fetch a subfont already (thus distinguishing NULL
* because we haven't tried yet from NULL because we tried and
* failed, so that we don't keep trying and failing
* subsequently).
*/
XFontStruct *fonts[4];
int allocated[4];
/*
* `sixteen_bit' is true iff the font object is indexed by
* values larger than a byte. That is, this flag tells us
* whether we use XDrawString or XDrawString16, etc.
*/
int sixteen_bit;
/*
* `variable' is true iff the font is non-fixed-pitch. This
* enables some code which takes greater care over character
* positioning during text drawing.
*/
int variable;
/*
* Data passed in to unifont_create().
*/
int wide, bold, shadowoffset, shadowalways;
};
static const struct unifont_vtable x11font_vtable = {
x11font_create,
x11font_destroy,
x11font_draw_text,
x11font_enum_fonts,
x11font_canonify_fontname,
x11font_scale_fontname,
"server",
};
static char *x11_guess_derived_font_name(XFontStruct *xfs, int bold, int wide)
{
Display *disp = GDK_DISPLAY();
Atom fontprop = XInternAtom(disp, "FONT", False);
unsigned long ret;
if (XGetFontProperty(xfs, fontprop, &ret)) {
char *name = XGetAtomName(disp, (Atom)ret);
if (name && name[0] == '-') {
char *strings[13];
char *dupname, *extrafree = NULL, *ret;
char *p, *q;
int nstr;
p = q = dupname = dupstr(name); /* skip initial minus */
nstr = 0;
while (*p && nstr < lenof(strings)) {
if (*p == '-') {
*p = '\0';
strings[nstr++] = p+1;
}
p++;
}
if (nstr < lenof(strings))
return NULL; /* XLFD was malformed */
if (bold)
strings[2] = "bold";
if (wide) {
/* 4 is `wideness', which obviously may have changed. */
/* 5 is additional style, which may be e.g. `ja' or `ko'. */
strings[4] = strings[5] = "*";
strings[11] = extrafree = dupprintf("%d", 2*atoi(strings[11]));
}
ret = dupcat("-", strings[ 0], "-", strings[ 1], "-", strings[ 2],
"-", strings[ 3], "-", strings[ 4], "-", strings[ 5],
"-", strings[ 6], "-", strings[ 7], "-", strings[ 8],
"-", strings[ 9], "-", strings[10], "-", strings[11],
"-", strings[12], NULL);
sfree(extrafree);
sfree(dupname);
return ret;
}
}
return NULL;
}
static int x11_font_width(XFontStruct *xfs, int sixteen_bit)
{
if (sixteen_bit) {
XChar2b space;
space.byte1 = 0;
space.byte2 = '0';
return XTextWidth16(xfs, &space, 1);
} else {
return XTextWidth(xfs, "0", 1);
}
}
static unifont *x11font_create(GtkWidget *widget, const char *name,
int wide, int bold,
int shadowoffset, int shadowalways)
{
struct x11font *xfont;
XFontStruct *xfs;
Display *disp = GDK_DISPLAY();
Atom charset_registry, charset_encoding, spacing;
unsigned long registry_ret, encoding_ret, spacing_ret;
int pubcs, realcs, sixteen_bit, variable;
int i;
xfs = XLoadQueryFont(disp, name);
if (!xfs)
return NULL;
charset_registry = XInternAtom(disp, "CHARSET_REGISTRY", False);
charset_encoding = XInternAtom(disp, "CHARSET_ENCODING", False);
pubcs = realcs = CS_NONE;
sixteen_bit = FALSE;
variable = TRUE;
if (XGetFontProperty(xfs, charset_registry, &registry_ret) &&
XGetFontProperty(xfs, charset_encoding, &encoding_ret)) {
char *reg, *enc;
reg = XGetAtomName(disp, (Atom)registry_ret);
enc = XGetAtomName(disp, (Atom)encoding_ret);
if (reg && enc) {
char *encoding = dupcat(reg, "-", enc, NULL);
pubcs = realcs = charset_from_xenc(encoding);
/*
* iso10646-1 is the only wide font encoding we
* support. In this case, we expect clients to give us
* UTF-8, which this module must internally convert
* into 16-bit Unicode.
*/
if (!strcasecmp(encoding, "iso10646-1")) {
sixteen_bit = TRUE;
pubcs = realcs = CS_UTF8;
}
/*
* Hack for X line-drawing characters: if the primary
* font is encoded as ISO-8859-1, and has valid glyphs
* in the first 32 char positions, it is assumed that
* those glyphs are the VT100 line-drawing character
* set.
*
* Actually, we'll hack even harder by only checking
* position 0x19 (vertical line, VT100 linedrawing
* `x'). Then we can check it easily by seeing if the
* ascent and descent differ.
*/
if (pubcs == CS_ISO8859_1) {
int dir, asc, desc;
XCharStruct cs;
XChar2b text;
text.byte1 = '\0';
text.byte2 = '\x12';
XTextExtents16(xfs, &text, 1, &dir, &asc, &desc, &cs);
if (asc != desc)
realcs = CS_ISO8859_1_X11;
}
sfree(encoding);
}
}
spacing = XInternAtom(disp, "SPACING", False);
if (XGetFontProperty(xfs, spacing, &spacing_ret)) {
char *spc;
spc = XGetAtomName(disp, (Atom)spacing_ret);
if (spc && strchr("CcMm", spc[0]))
variable = FALSE;
}
xfont = snew(struct x11font);
xfont->u.vt = &x11font_vtable;
xfont->u.width = x11_font_width(xfs, sixteen_bit);
xfont->u.ascent = xfs->ascent;
xfont->u.descent = xfs->descent;
xfont->u.height = xfont->u.ascent + xfont->u.descent;
xfont->u.public_charset = pubcs;
xfont->u.real_charset = realcs;
xfont->fonts[0] = xfs;
xfont->allocated[0] = TRUE;
xfont->sixteen_bit = sixteen_bit;
xfont->variable = variable;
xfont->wide = wide;
xfont->bold = bold;
xfont->shadowoffset = shadowoffset;
xfont->shadowalways = shadowalways;
for (i = 1; i < lenof(xfont->fonts); i++) {
xfont->fonts[i] = NULL;
xfont->allocated[i] = FALSE;
}
return (unifont *)xfont;
}
static void x11font_destroy(unifont *font)
{
Display *disp = GDK_DISPLAY();
struct x11font *xfont = (struct x11font *)font;
int i;
for (i = 0; i < lenof(xfont->fonts); i++)
if (xfont->fonts[i])
XFreeFont(disp, xfont->fonts[i]);
sfree(font);
}
static void x11_alloc_subfont(struct x11font *xfont, int sfid)
{
Display *disp = GDK_DISPLAY();
char *derived_name = x11_guess_derived_font_name
(xfont->fonts[0], sfid & 1, !!(sfid & 2));
xfont->fonts[sfid] = XLoadQueryFont(disp, derived_name);
xfont->allocated[sfid] = TRUE;
sfree(derived_name);
/* Note that xfont->fonts[sfid] may still be NULL, if XLQF failed. */
}
#if !GTK_CHECK_VERSION(2,0,0)
#define GDK_DRAWABLE_XID(d) GDK_WINDOW_XWINDOW(d) /* GTK1's name for this */
#endif
static void x11font_really_draw_text_16(GdkDrawable *target, XFontStruct *xfs,
GC gc, int x, int y,
const XChar2b *string, int nchars,
int shadowoffset,
int fontvariable, int cellwidth)
{
Display *disp = GDK_DISPLAY();
int step, nsteps, centre;
if (fontvariable) {
/*
* In a variable-pitch font, we draw one character at a
* time, and centre it in the character cell.
*/
step = 1;
nsteps = nchars;
centre = TRUE;
} else {
/*
* In a fixed-pitch font, we can draw the whole lot in one go.
*/
step = nchars;
nsteps = 1;
centre = FALSE;
}
while (nsteps-- > 0) {
int X = x;
if (centre)
X += (cellwidth - XTextWidth16(xfs, string, step)) / 2;
XDrawString16(disp, GDK_DRAWABLE_XID(target), gc,
X, y, string, step);
if (shadowoffset)
XDrawString16(disp, GDK_DRAWABLE_XID(target), gc,
X + shadowoffset, y, string, step);
x += cellwidth;
string += step;
}
}
static void x11font_really_draw_text(GdkDrawable *target, XFontStruct *xfs,
GC gc, int x, int y,
const char *string, int nchars,
int shadowoffset,
int fontvariable, int cellwidth)
{
Display *disp = GDK_DISPLAY();
int step, nsteps, centre;
if (fontvariable) {
/*
* In a variable-pitch font, we draw one character at a
* time, and centre it in the character cell.
*/
step = 1;
nsteps = nchars;
centre = TRUE;
} else {
/*
* In a fixed-pitch font, we can draw the whole lot in one go.
*/
step = nchars;
nsteps = 1;
centre = FALSE;
}
while (nsteps-- > 0) {
int X = x;
if (centre)
X += (cellwidth - XTextWidth(xfs, string, step)) / 2;
XDrawString(disp, GDK_DRAWABLE_XID(target), gc,
X, y, string, step);
if (shadowoffset)
XDrawString(disp, GDK_DRAWABLE_XID(target), gc,
X + shadowoffset, y, string, step);
x += cellwidth;
string += step;
}
}
static void x11font_draw_text(GdkDrawable *target, GdkGC *gdkgc, unifont *font,
int x, int y, const char *string, int len,
int wide, int bold, int cellwidth)
{
Display *disp = GDK_DISPLAY();
struct x11font *xfont = (struct x11font *)font;
GC gc = GDK_GC_XGC(gdkgc);
int sfid;
int shadowoffset = 0;
int mult = (wide ? 2 : 1);
wide -= xfont->wide;
bold -= xfont->bold;
/*
* Decide which subfont we're using, and whether we have to
* use shadow bold.
*/
if (xfont->shadowalways && bold) {
shadowoffset = xfont->shadowoffset;
bold = 0;
}
sfid = 2 * wide + bold;
if (!xfont->allocated[sfid])
x11_alloc_subfont(xfont, sfid);
if (bold && !xfont->fonts[sfid]) {
bold = 0;
shadowoffset = xfont->shadowoffset;
sfid = 2 * wide + bold;
if (!xfont->allocated[sfid])
x11_alloc_subfont(xfont, sfid);
}
if (!xfont->fonts[sfid])
return; /* we've tried our best, but no luck */
XSetFont(disp, gc, xfont->fonts[sfid]->fid);
if (xfont->sixteen_bit) {
/*
* This X font has 16-bit character indices, which means
* we expect our string to have been passed in UTF-8.
*/
XChar2b *xcs;
wchar_t *wcs;
int nchars, maxchars, i;
/*
* Convert the input string to wide-character Unicode.
*/
maxchars = 0;
for (i = 0; i < len; i++)
if ((unsigned char)string[i] <= 0x7F ||
(unsigned char)string[i] >= 0xC0)
maxchars++;
wcs = snewn(maxchars+1, wchar_t);
nchars = charset_to_unicode((char **)&string, &len, wcs, maxchars,
CS_UTF8, NULL, NULL, 0);
assert(nchars <= maxchars);
wcs[nchars] = L'\0';
xcs = snewn(nchars, XChar2b);
for (i = 0; i < nchars; i++) {
xcs[i].byte1 = wcs[i] >> 8;
xcs[i].byte2 = wcs[i];
}
x11font_really_draw_text_16(target, xfont->fonts[sfid], gc, x, y,
xcs, nchars, shadowoffset,
xfont->variable, cellwidth * mult);
sfree(xcs);
sfree(wcs);
} else {
x11font_really_draw_text(target, xfont->fonts[sfid], gc, x, y,
string, len, shadowoffset,
xfont->variable, cellwidth * mult);
}
}
static void x11font_enum_fonts(GtkWidget *widget,
fontsel_add_entry callback, void *callback_ctx)
{
char **fontnames;
char *tmp = NULL;
int nnames, i, max, tmpsize;
max = 32768;
while (1) {
fontnames = XListFonts(GDK_DISPLAY(), "*", max, &nnames);
if (nnames >= max) {
XFreeFontNames(fontnames);
max *= 2;
} else
break;
}
tmpsize = 0;
for (i = 0; i < nnames; i++) {
if (fontnames[i][0] == '-') {
/*
* Dismember an XLFD and convert it into the format
* we'll be using in the font selector.
*/
char *components[14];
char *p, *font, *style, *stylekey, *charset;
int j, weightkey, slantkey, setwidthkey;
int thistmpsize, fontsize, flags;
thistmpsize = 4 * strlen(fontnames[i]) + 256;
if (tmpsize < thistmpsize) {
tmpsize = thistmpsize;
tmp = sresize(tmp, tmpsize, char);
}
strcpy(tmp, fontnames[i]);
p = tmp;
for (j = 0; j < 14; j++) {
if (*p)
*p++ = '\0';
components[j] = p;
while (*p && *p != '-')
p++;
}
*p++ = '\0';
/*
* Font name is made up of fields 0 and 1, in reverse
* order with parentheses. (This is what the GTK 1.2 X
* font selector does, and it seems to come out
* looking reasonably sensible.)
*/
font = p;
p += 1 + sprintf(p, "%s (%s)", components[1], components[0]);
/*
* Charset is made up of fields 12 and 13.
*/
charset = p;
p += 1 + sprintf(p, "%s-%s", components[12], components[13]);
/*
* Style is a mixture of quite a lot of the fields,
* with some strange formatting.
*/
style = p;
p += sprintf(p, "%s", components[2][0] ? components[2] :
"regular");
if (!g_strcasecmp(components[3], "i"))
p += sprintf(p, " italic");
else if (!g_strcasecmp(components[3], "o"))
p += sprintf(p, " oblique");
else if (!g_strcasecmp(components[3], "ri"))
p += sprintf(p, " reverse italic");
else if (!g_strcasecmp(components[3], "ro"))
p += sprintf(p, " reverse oblique");
else if (!g_strcasecmp(components[3], "ot"))
p += sprintf(p, " other-slant");
if (components[4][0] && g_strcasecmp(components[4], "normal"))
p += sprintf(p, " %s", components[4]);
if (!g_strcasecmp(components[10], "m"))
p += sprintf(p, " [M]");
if (!g_strcasecmp(components[10], "c"))
p += sprintf(p, " [C]");
if (components[5][0])
p += sprintf(p, " %s", components[5]);
/*
* Style key is the same stuff as above, but with a
* couple of transformations done on it to make it
* sort more sensibly.
*/
p++;
stylekey = p;
if (!g_strcasecmp(components[2], "medium") ||
!g_strcasecmp(components[2], "regular") ||
!g_strcasecmp(components[2], "normal") ||
!g_strcasecmp(components[2], "book"))
weightkey = 0;
else if (!g_strncasecmp(components[2], "demi", 4) ||
!g_strncasecmp(components[2], "semi", 4))
weightkey = 1;
else
weightkey = 2;
if (!g_strcasecmp(components[3], "r"))
slantkey = 0;
else if (!g_strncasecmp(components[3], "r", 1))
slantkey = 2;
else
slantkey = 1;
if (!g_strcasecmp(components[4], "normal"))
setwidthkey = 0;
else
setwidthkey = 1;
p += sprintf(p, "%04d%04d%s%04d%04d%s%04d%04d%s%04d%s%04d%s",
weightkey,
(int)strlen(components[2]), components[2],
slantkey,
(int)strlen(components[3]), components[3],
setwidthkey,
(int)strlen(components[4]), components[4],
(int)strlen(components[10]), components[10],
(int)strlen(components[5]), components[5]);
assert(p - tmp < thistmpsize);
/*
* Size is in pixels, for our application, so we
* derive it directly from the pixel size field,
* number 6.
*/
fontsize = atoi(components[6]);
/*
* Flags: we need to know whether this is a monospaced
* font, which we do by examining the spacing field
* again.
*/
flags = FONTFLAG_SERVERSIDE;
if (!strchr("CcMm", components[10][0]))
flags |= FONTFLAG_NONMONOSPACED;
/*
* Not sure why, but sometimes the X server will
* deliver dummy font types in which fontsize comes
* out as zero. Filter those out.
*/
if (fontsize)
callback(callback_ctx, fontnames[i], font, charset,
style, stylekey, fontsize, flags, &x11font_vtable);
} else {
/*
* This isn't an XLFD, so it must be an alias.
* Transmit it with mostly null data.
*
* It would be nice to work out if it's monospaced
* here, but at the moment I can't see that being
* anything but computationally hideous. Ah well.
*/
callback(callback_ctx, fontnames[i], fontnames[i], NULL,
NULL, NULL, 0, FONTFLAG_SERVERALIAS, &x11font_vtable);
}
}
XFreeFontNames(fontnames);
}
static char *x11font_canonify_fontname(GtkWidget *widget, const char *name,
int *size, int *flags,
int resolve_aliases)
{
/*
* When given an X11 font name to try to make sense of for a
* font selector, we must attempt to load it (to see if it
* exists), and then canonify it by extracting its FONT
* property, which should give its full XLFD even if what we
* originally had was a wildcard.
*
* However, we must carefully avoid canonifying font
* _aliases_, unless specifically asked to, because the font
* selector treats them as worthwhile in their own right.
*/
XFontStruct *xfs;
Display *disp = GDK_DISPLAY();
Atom fontprop, fontprop2;
unsigned long ret;
xfs = XLoadQueryFont(disp, name);
if (!xfs)
return NULL; /* didn't make sense to us, sorry */
fontprop = XInternAtom(disp, "FONT", False);
if (XGetFontProperty(xfs, fontprop, &ret)) {
char *newname = XGetAtomName(disp, (Atom)ret);
if (newname) {
unsigned long fsize = 12;
fontprop2 = XInternAtom(disp, "PIXEL_SIZE", False);
if (XGetFontProperty(xfs, fontprop2, &fsize) && fsize > 0) {
*size = fsize;
XFreeFont(disp, xfs);
if (flags) {
if (name[0] == '-' || resolve_aliases)
*flags = FONTFLAG_SERVERSIDE;
else
*flags = FONTFLAG_SERVERALIAS;
}
return dupstr(name[0] == '-' || resolve_aliases ?
newname : name);
}
}
}
XFreeFont(disp, xfs);
return NULL; /* something went wrong */
}
static char *x11font_scale_fontname(GtkWidget *widget, const char *name,
int size)
{
return NULL; /* shan't */
}
#if GTK_CHECK_VERSION(2,0,0)
/* ----------------------------------------------------------------------
* Pango font implementation (for GTK 2 only).
*/
#if defined PANGO_PRE_1POINT4 && !defined PANGO_PRE_1POINT6
#define PANGO_PRE_1POINT6 /* make life easier for pre-1.4 folk */
#endif
static void pangofont_draw_text(GdkDrawable *target, GdkGC *gc, unifont *font,
int x, int y, const char *string, int len,
int wide, int bold, int cellwidth);
static unifont *pangofont_create(GtkWidget *widget, const char *name,
int wide, int bold,
int shadowoffset, int shadowalways);
static void pangofont_destroy(unifont *font);
static void pangofont_enum_fonts(GtkWidget *widget, fontsel_add_entry callback,
void *callback_ctx);
static char *pangofont_canonify_fontname(GtkWidget *widget, const char *name,
int *size, int *flags,
int resolve_aliases);
static char *pangofont_scale_fontname(GtkWidget *widget, const char *name,
int size);
struct pangofont {
struct unifont u;
/*
* Pango objects.
*/
PangoFontDescription *desc;
PangoFontset *fset;
/*
* The containing widget.
*/
GtkWidget *widget;
/*
* Data passed in to unifont_create().
*/
int bold, shadowoffset, shadowalways;
};
static const struct unifont_vtable pangofont_vtable = {
pangofont_create,
pangofont_destroy,
pangofont_draw_text,
pangofont_enum_fonts,
pangofont_canonify_fontname,
pangofont_scale_fontname,
"client",
};
/*
* This function is used to rigorously validate a
* PangoFontDescription. Later versions of Pango have a nasty
* habit of accepting _any_ old string as input to
* pango_font_description_from_string and returning a font
* description which can actually be used to display text, even if
* they have to do it by falling back to their most default font.
* This is doubtless helpful in some situations, but not here,
* because we need to know if a Pango font string actually _makes
* sense_ in order to fall back to treating it as an X font name
* if it doesn't. So we check that the font family is actually one
* supported by Pango.
*/
static int pangofont_check_desc_makes_sense(PangoContext *ctx,
PangoFontDescription *desc)
{
#ifndef PANGO_PRE_1POINT6
PangoFontMap *map;
#endif
PangoFontFamily **families;
int i, nfamilies, matched;
/*
* Ask Pango for a list of font families, and iterate through
* them to see if one of them matches the family in the
* PangoFontDescription.
*/
#ifndef PANGO_PRE_1POINT6
map = pango_context_get_font_map(ctx);
if (!map)
return FALSE;
pango_font_map_list_families(map, &families, &nfamilies);
#else
pango_context_list_families(ctx, &families, &nfamilies);
#endif
matched = FALSE;
for (i = 0; i < nfamilies; i++) {
if (!g_strcasecmp(pango_font_family_get_name(families[i]),
pango_font_description_get_family(desc))) {
matched = TRUE;
break;
}
}
g_free(families);
return matched;
}
static unifont *pangofont_create(GtkWidget *widget, const char *name,
int wide, int bold,
int shadowoffset, int shadowalways)
{
struct pangofont *pfont;
PangoContext *ctx;
#ifndef PANGO_PRE_1POINT6
PangoFontMap *map;
#endif
PangoFontDescription *desc;
PangoFontset *fset;
PangoFontMetrics *metrics;
desc = pango_font_description_from_string(name);
if (!desc)
return NULL;
ctx = gtk_widget_get_pango_context(widget);
if (!ctx) {
pango_font_description_free(desc);
return NULL;
}
if (!pangofont_check_desc_makes_sense(ctx, desc)) {
pango_font_description_free(desc);
return NULL;
}
#ifndef PANGO_PRE_1POINT6
map = pango_context_get_font_map(ctx);
if (!map) {
pango_font_description_free(desc);
return NULL;
}
fset = pango_font_map_load_fontset(map, ctx, desc,
pango_context_get_language(ctx));
#else
fset = pango_context_load_fontset(ctx, desc,
pango_context_get_language(ctx));
#endif
if (!fset) {
pango_font_description_free(desc);
return NULL;
}
metrics = pango_fontset_get_metrics(fset);
if (!metrics ||
pango_font_metrics_get_approximate_digit_width(metrics) == 0) {
pango_font_description_free(desc);
g_object_unref(fset);
return NULL;
}
pfont = snew(struct pangofont);
pfont->u.vt = &pangofont_vtable;
pfont->u.width =
PANGO_PIXELS(pango_font_metrics_get_approximate_digit_width(metrics));
pfont->u.ascent = PANGO_PIXELS(pango_font_metrics_get_ascent(metrics));
pfont->u.descent = PANGO_PIXELS(pango_font_metrics_get_descent(metrics));
pfont->u.height = pfont->u.ascent + pfont->u.descent;
/* The Pango API is hardwired to UTF-8 */
pfont->u.public_charset = CS_UTF8;
pfont->u.real_charset = CS_UTF8;
pfont->desc = desc;
pfont->fset = fset;
pfont->widget = widget;
pfont->bold = bold;
pfont->shadowoffset = shadowoffset;
pfont->shadowalways = shadowalways;
pango_font_metrics_unref(metrics);
return (unifont *)pfont;
}
static void pangofont_destroy(unifont *font)
{
struct pangofont *pfont = (struct pangofont *)font;
pango_font_description_free(pfont->desc);
g_object_unref(pfont->fset);
sfree(font);
}
static void pangofont_draw_text(GdkDrawable *target, GdkGC *gc, unifont *font,
int x, int y, const char *string, int len,
int wide, int bold, int cellwidth)
{
struct pangofont *pfont = (struct pangofont *)font;
PangoLayout *layout;
PangoRectangle rect;
int shadowbold = FALSE;
if (wide)
cellwidth *= 2;
y -= pfont->u.ascent;
layout = pango_layout_new(gtk_widget_get_pango_context(pfont->widget));
pango_layout_set_font_description(layout, pfont->desc);
if (bold > pfont->bold) {
if (pfont->shadowalways)
shadowbold = TRUE;
else {
PangoFontDescription *desc2 =
pango_font_description_copy_static(pfont->desc);
pango_font_description_set_weight(desc2, PANGO_WEIGHT_BOLD);
pango_layout_set_font_description(layout, desc2);
}
}
while (len > 0) {
int clen, n;
/*
* We want to display every character from this string in
* the centre of its own character cell. In the worst case,
* this requires a separate text-drawing call for each
* character; but in the common case where the font is
* properly fixed-width, we can draw many characters in one
* go which is much faster.
*
* This still isn't really ideal. If you look at what
* happens in the X protocol as a result of all of this, you
* find - naturally enough - that each call to
* gdk_draw_layout() generates a separate set of X RENDER
* operations involving creating a picture, setting a clip
* rectangle, doing some drawing and undoing the whole lot.
* In an ideal world, we should _always_ be able to turn the
* contents of this loop into a single RenderCompositeGlyphs
* operation which internally specifies inter-character
* deltas to get the spacing right, which would give us full
* speed _even_ in the worst case of a non-fixed-width font.
* However, Pango's architecture and documentation are so
* unhelpful that I have no idea how if at all to persuade
* them to do that.
*/
/*
* Start by extracting a single UTF-8 character from the
* string.
*/
clen = 1;
while (clen < len &&
(unsigned char)string[clen] >= 0x80 &&
(unsigned char)string[clen] < 0xC0)
clen++;
n = 1;
/*
* See if that character has the width we expect.
*/
pango_layout_set_text(layout, string, clen);
pango_layout_get_pixel_extents(layout, NULL, &rect);
if (rect.width == cellwidth) {
/*
* Try extracting more characters, for as long as they
* stay well-behaved.
*/
while (clen < len) {
int oldclen = clen;
clen++; /* skip UTF-8 introducer byte */
while (clen < len &&
(unsigned char)string[clen] >= 0x80 &&
(unsigned char)string[clen] < 0xC0)
clen++;
n++;
pango_layout_set_text(layout, string, clen);
pango_layout_get_pixel_extents(layout, NULL, &rect);
if (rect.width != n * cellwidth) {
clen = oldclen;
n--;
break;
}
}
}
pango_layout_set_text(layout, string, clen);
pango_layout_get_pixel_extents(layout, NULL, &rect);
gdk_draw_layout(target, gc, x + (n*cellwidth - rect.width)/2,
y + (pfont->u.height - rect.height)/2, layout);
if (shadowbold)
gdk_draw_layout(target, gc, x + (n*cellwidth - rect.width)/2 + pfont->shadowoffset,
y + (pfont->u.height - rect.height)/2, layout);
len -= clen;
string += clen;
x += n * cellwidth;
}
g_object_unref(layout);
}
/*
* Dummy size value to be used when converting a
* PangoFontDescription of a scalable font to a string for
* internal use.
*/
#define PANGO_DUMMY_SIZE 12
static void pangofont_enum_fonts(GtkWidget *widget, fontsel_add_entry callback,
void *callback_ctx)
{
PangoContext *ctx;
#ifndef PANGO_PRE_1POINT6
PangoFontMap *map;
#endif
PangoFontFamily **families;
int i, nfamilies;
ctx = gtk_widget_get_pango_context(widget);
if (!ctx)
return;
/*
* Ask Pango for a list of font families, and iterate through
* them.
*/
#ifndef PANGO_PRE_1POINT6
map = pango_context_get_font_map(ctx);
if (!map)
return;
pango_font_map_list_families(map, &families, &nfamilies);
#else
pango_context_list_families(ctx, &families, &nfamilies);
#endif
for (i = 0; i < nfamilies; i++) {
PangoFontFamily *family = families[i];
const char *familyname;
int flags;
PangoFontFace **faces;
int j, nfaces;
/*
* Set up our flags for this font family, and get the name
* string.
*/
flags = FONTFLAG_CLIENTSIDE;
#ifndef PANGO_PRE_1POINT4
/*
* In very early versions of Pango, we can't tell
* monospaced fonts from non-monospaced.
*/
if (!pango_font_family_is_monospace(family))
flags |= FONTFLAG_NONMONOSPACED;
#endif
familyname = pango_font_family_get_name(family);
/*
* Go through the available font faces in this family.
*/
pango_font_family_list_faces(family, &faces, &nfaces);
for (j = 0; j < nfaces; j++) {
PangoFontFace *face = faces[j];
PangoFontDescription *desc;
const char *facename;
int *sizes;
int k, nsizes, dummysize;
/*
* Get the face name string.
*/
facename = pango_font_face_get_face_name(face);
/*
* Set up a font description with what we've got so
* far. We'll fill in the size field manually and then
* call pango_font_description_to_string() to give the
* full real name of the specific font.
*/
desc = pango_font_face_describe(face);
/*
* See if this font has a list of specific sizes.
*/
#ifndef PANGO_PRE_1POINT4
pango_font_face_list_sizes(face, &sizes, &nsizes);
#else
/*
* In early versions of Pango, that call wasn't
* supported; we just have to assume everything is
* scalable.
*/
sizes = NULL;
#endif
if (!sizes) {
/*
* Write a single entry with a dummy size.
*/
dummysize = PANGO_DUMMY_SIZE * PANGO_SCALE;
sizes = &dummysize;
nsizes = 1;
}
/*
* If so, go through them one by one.
*/
for (k = 0; k < nsizes; k++) {
char *fullname;
char stylekey[128];
pango_font_description_set_size(desc, sizes[k]);
fullname = pango_font_description_to_string(desc);
/*
* Construct the sorting key for font styles.
*/
{
char *p = stylekey;
int n;
n = pango_font_description_get_weight(desc);
/* Weight: normal, then lighter, then bolder */
if (n <= PANGO_WEIGHT_NORMAL)
n = PANGO_WEIGHT_NORMAL - n;
p += sprintf(p, "%4d", n);
n = pango_font_description_get_style(desc);
p += sprintf(p, " %2d", n);
n = pango_font_description_get_stretch(desc);
/* Stretch: closer to normal sorts earlier */
n = 2 * abs(PANGO_STRETCH_NORMAL - n) +
(n < PANGO_STRETCH_NORMAL);
p += sprintf(p, " %2d", n);
n = pango_font_description_get_variant(desc);
p += sprintf(p, " %2d", n);
}
/*
* Got everything. Hand off to the callback.
* (The charset string is NULL, because only
* server-side X fonts use it.)
*/
callback(callback_ctx, fullname, familyname, NULL, facename,
stylekey,
(sizes == &dummysize ? 0 : PANGO_PIXELS(sizes[k])),
flags, &pangofont_vtable);
g_free(fullname);
}
if (sizes != &dummysize)
g_free(sizes);
pango_font_description_free(desc);
}
g_free(faces);
}
g_free(families);
}
static char *pangofont_canonify_fontname(GtkWidget *widget, const char *name,
int *size, int *flags,
int resolve_aliases)
{
/*
* When given a Pango font name to try to make sense of for a
* font selector, we must normalise it to PANGO_DUMMY_SIZE and
* extract its original size (in pixels) into the `size' field.
*/
PangoContext *ctx;
#ifndef PANGO_PRE_1POINT6
PangoFontMap *map;
#endif
PangoFontDescription *desc;
PangoFontset *fset;
PangoFontMetrics *metrics;
char *newname, *retname;
desc = pango_font_description_from_string(name);
if (!desc)
return NULL;
ctx = gtk_widget_get_pango_context(widget);
if (!ctx) {
pango_font_description_free(desc);
return NULL;
}
if (!pangofont_check_desc_makes_sense(ctx, desc)) {
pango_font_description_free(desc);
return NULL;
}
#ifndef PANGO_PRE_1POINT6
map = pango_context_get_font_map(ctx);
if (!map) {
pango_font_description_free(desc);
return NULL;
}
fset = pango_font_map_load_fontset(map, ctx, desc,
pango_context_get_language(ctx));
#else
fset = pango_context_load_fontset(ctx, desc,
pango_context_get_language(ctx));
#endif
if (!fset) {
pango_font_description_free(desc);
return NULL;
}
metrics = pango_fontset_get_metrics(fset);
if (!metrics ||
pango_font_metrics_get_approximate_digit_width(metrics) == 0) {
pango_font_description_free(desc);
g_object_unref(fset);
return NULL;
}
*size = PANGO_PIXELS(pango_font_description_get_size(desc));
*flags = FONTFLAG_CLIENTSIDE;
pango_font_description_set_size(desc, PANGO_DUMMY_SIZE * PANGO_SCALE);
newname = pango_font_description_to_string(desc);
retname = dupstr(newname);
g_free(newname);
pango_font_metrics_unref(metrics);
pango_font_description_free(desc);
g_object_unref(fset);
return retname;
}
static char *pangofont_scale_fontname(GtkWidget *widget, const char *name,
int size)
{
PangoFontDescription *desc;
char *newname, *retname;
desc = pango_font_description_from_string(name);
if (!desc)
return NULL;
pango_font_description_set_size(desc, size * PANGO_SCALE);
newname = pango_font_description_to_string(desc);
retname = dupstr(newname);
g_free(newname);
pango_font_description_free(desc);
return retname;
}
#endif /* GTK_CHECK_VERSION(2,0,0) */
/* ----------------------------------------------------------------------
* Outermost functions which do the vtable dispatch.
*/
/*
* Complete list of font-type subclasses. Listed in preference
* order for unifont_create(). (That is, in the extremely unlikely
* event that the same font name is valid as both a Pango and an
* X11 font, it will be interpreted as the former in the absence
* of an explicit type-disambiguating prefix.)
*/
static const struct unifont_vtable *unifont_types[] = {
#if GTK_CHECK_VERSION(2,0,0)
&pangofont_vtable,
#endif
&x11font_vtable,
};
/*
* Function which takes a font name and processes the optional
* scheme prefix. Returns the tail of the font name suitable for
* passing to individual font scheme functions, and also provides
* a subrange of the unifont_types[] array above.
*
* The return values `start' and `end' denote a half-open interval
* in unifont_types[]; that is, the correct way to iterate over
* them is
*
* for (i = start; i < end; i++) {...}
*/
static const char *unifont_do_prefix(const char *name, int *start, int *end)
{
int colonpos = strcspn(name, ":");
int i;
if (name[colonpos]) {
/*
* There's a colon prefix on the font name. Use it to work
* out which subclass to use.
*/
for (i = 0; i < lenof(unifont_types); i++) {
if (strlen(unifont_types[i]->prefix) == colonpos &&
!strncmp(unifont_types[i]->prefix, name, colonpos)) {
*start = i;
*end = i+1;
return name + colonpos + 1;
}
}
/*
* None matched, so return an empty scheme list to prevent
* any scheme from being called at all.
*/
*start = *end = 0;
return name + colonpos + 1;
} else {
/*
* No colon prefix, so just use all the subclasses.
*/
*start = 0;
*end = lenof(unifont_types);
return name;
}
}
unifont *unifont_create(GtkWidget *widget, const char *name, int wide,
int bold, int shadowoffset, int shadowalways)
{
int i, start, end;
name = unifont_do_prefix(name, &start, &end);
for (i = start; i < end; i++) {
unifont *ret = unifont_types[i]->create(widget, name, wide, bold,
shadowoffset, shadowalways);
if (ret)
return ret;
}
return NULL; /* font not found in any scheme */
}
void unifont_destroy(unifont *font)
{
font->vt->destroy(font);
}
void unifont_draw_text(GdkDrawable *target, GdkGC *gc, unifont *font,
int x, int y, const char *string, int len,
int wide, int bold, int cellwidth)
{
font->vt->draw_text(target, gc, font, x, y, string, len,
wide, bold, cellwidth);
}
#if GTK_CHECK_VERSION(2,0,0)
/* ----------------------------------------------------------------------
* Implementation of a unified font selector. Used on GTK 2 only;
* for GTK 1 we still use the standard font selector.
*/
typedef struct fontinfo fontinfo;
typedef struct unifontsel_internal {
/* This must be the structure's first element, for cross-casting */
unifontsel u;
GtkListStore *family_model, *style_model, *size_model;
GtkWidget *family_list, *style_list, *size_entry, *size_list;
GtkWidget *filter_buttons[4];
GtkWidget *preview_area;
GdkPixmap *preview_pixmap;
int preview_width, preview_height;
GdkColor preview_fg, preview_bg;
int filter_flags;
tree234 *fonts_by_realname, *fonts_by_selorder;
fontinfo *selected;
int selsize, intendedsize;
int inhibit_response; /* inhibit callbacks when we change GUI controls */
} unifontsel_internal;
/*
* The structure held in the tree234s. All the string members are
* part of the same allocated area, so don't need freeing
* separately.
*/
struct fontinfo {
char *realname;
char *family, *charset, *style, *stylekey;
int size, flags;
/*
* Fallback sorting key, to permit multiple identical entries
* to exist in the selorder tree.
*/
int index;
/*
* Indices mapping fontinfo structures to indices in the list
* boxes. sizeindex is irrelevant if the font is scalable
* (size==0).
*/
int familyindex, styleindex, sizeindex;
/*
* The class of font.
*/
const struct unifont_vtable *fontclass;
};
struct fontinfo_realname_find {
const char *realname;
int flags;
};
static int strnullcasecmp(const char *a, const char *b)
{
int i;
/*
* If exactly one of the inputs is NULL, it compares before
* the other one.
*/
if ((i = (!b) - (!a)) != 0)
return i;
/*
* NULL compares equal.
*/
if (!a)
return 0;
/*
* Otherwise, ordinary strcasecmp.
*/
return g_strcasecmp(a, b);
}
static int fontinfo_realname_compare(void *av, void *bv)
{
fontinfo *a = (fontinfo *)av;
fontinfo *b = (fontinfo *)bv;
int i;
if ((i = strnullcasecmp(a->realname, b->realname)) != 0)
return i;
if ((a->flags & FONTFLAG_SORT_MASK) != (b->flags & FONTFLAG_SORT_MASK))
return ((a->flags & FONTFLAG_SORT_MASK) <
(b->flags & FONTFLAG_SORT_MASK) ? -1 : +1);
return 0;
}
static int fontinfo_realname_find(void *av, void *bv)
{
struct fontinfo_realname_find *a = (struct fontinfo_realname_find *)av;
fontinfo *b = (fontinfo *)bv;
int i;
if ((i = strnullcasecmp(a->realname, b->realname)) != 0)
return i;
if ((a->flags & FONTFLAG_SORT_MASK) != (b->flags & FONTFLAG_SORT_MASK))
return ((a->flags & FONTFLAG_SORT_MASK) <
(b->flags & FONTFLAG_SORT_MASK) ? -1 : +1);
return 0;
}
static int fontinfo_selorder_compare(void *av, void *bv)
{
fontinfo *a = (fontinfo *)av;
fontinfo *b = (fontinfo *)bv;
int i;
if ((i = strnullcasecmp(a->family, b->family)) != 0)
return i;
/*
* Font class comes immediately after family, so that fonts
* from different classes with the same family
*/
if ((a->flags & FONTFLAG_SORT_MASK) != (b->flags & FONTFLAG_SORT_MASK))
return ((a->flags & FONTFLAG_SORT_MASK) <
(b->flags & FONTFLAG_SORT_MASK) ? -1 : +1);
if ((i = strnullcasecmp(a->charset, b->charset)) != 0)
return i;
if ((i = strnullcasecmp(a->stylekey, b->stylekey)) != 0)
return i;
if ((i = strnullcasecmp(a->style, b->style)) != 0)
return i;
if (a->size != b->size)
return (a->size < b->size ? -1 : +1);
if (a->index != b->index)
return (a->index < b->index ? -1 : +1);
return 0;
}
static void unifontsel_deselect(unifontsel_internal *fs)
{
fs->selected = NULL;
gtk_list_store_clear(fs->style_model);
gtk_list_store_clear(fs->size_model);
gtk_widget_set_sensitive(fs->u.ok_button, FALSE);
gtk_widget_set_sensitive(fs->size_entry, FALSE);
}
static void unifontsel_setup_familylist(unifontsel_internal *fs)
{
GtkTreeIter iter;
int i, listindex, minpos = -1, maxpos = -1;
char *currfamily = NULL;
int currflags = -1;
fontinfo *info;
gtk_list_store_clear(fs->family_model);
listindex = 0;
/*
* Search through the font tree for anything matching our
* current filter criteria. When we find one, add its font
* name to the list box.
*/
for (i = 0 ;; i++) {
info = (fontinfo *)index234(fs->fonts_by_selorder, i);
/*
* info may be NULL if we've just run off the end of the
* tree. We must still do a processing pass in that
* situation, in case we had an unfinished font record in
* progress.
*/
if (info && (info->flags &~ fs->filter_flags)) {
info->familyindex = -1;
continue; /* we're filtering out this font */
}
if (!info || strnullcasecmp(currfamily, info->family) ||
currflags != (info->flags & FONTFLAG_SORT_MASK)) {
/*
* We've either finished a family, or started a new
* one, or both.
*/
if (currfamily) {
gtk_list_store_append(fs->family_model, &iter);
gtk_list_store_set(fs->family_model, &iter,
0, currfamily, 1, minpos, 2, maxpos+1, -1);
listindex++;
}
if (info) {
minpos = i;
currfamily = info->family;
currflags = info->flags & FONTFLAG_SORT_MASK;
}
}
if (!info)
break; /* now we're done */
info->familyindex = listindex;
maxpos = i;
}
/*
* If we've just filtered out the previously selected font,
* deselect it thoroughly.
*/
if (fs->selected && fs->selected->familyindex < 0)
unifontsel_deselect(fs);
}
static void unifontsel_setup_stylelist(unifontsel_internal *fs,
int start, int end)
{
GtkTreeIter iter;
int i, listindex, minpos = -1, maxpos = -1, started = FALSE;
char *currcs = NULL, *currstyle = NULL;
fontinfo *info;
gtk_list_store_clear(fs->style_model);
listindex = 0;
started = FALSE;
/*
* Search through the font tree for anything matching our
* current filter criteria. When we find one, add its charset
* and/or style name to the list box.
*/
for (i = start; i <= end; i++) {
if (i == end)
info = NULL;
else
info = (fontinfo *)index234(fs->fonts_by_selorder, i);
/*
* info may be NULL if we've just run off the end of the
* relevant data. We must still do a processing pass in
* that situation, in case we had an unfinished font
* record in progress.
*/
if (info && (info->flags &~ fs->filter_flags)) {
info->styleindex = -1;
continue; /* we're filtering out this font */
}
if (!info || !started || strnullcasecmp(currcs, info->charset) ||
strnullcasecmp(currstyle, info->style)) {
/*
* We've either finished a style/charset, or started a
* new one, or both.
*/
started = TRUE;
if (currstyle) {
gtk_list_store_append(fs->style_model, &iter);
gtk_list_store_set(fs->style_model, &iter,
0, currstyle, 1, minpos, 2, maxpos+1,
3, TRUE, -1);
listindex++;
}
if (info) {
minpos = i;
if (info->charset && strnullcasecmp(currcs, info->charset)) {
gtk_list_store_append(fs->style_model, &iter);
gtk_list_store_set(fs->style_model, &iter,
0, info->charset, 1, -1, 2, -1,
3, FALSE, -1);
listindex++;
}
currcs = info->charset;
currstyle = info->style;
}
}
if (!info)
break; /* now we're done */
info->styleindex = listindex;
maxpos = i;
}
}
static const int unifontsel_default_sizes[] = { 10, 12, 14, 16, 20, 24, 32 };
static void unifontsel_setup_sizelist(unifontsel_internal *fs,
int start, int end)
{
GtkTreeIter iter;
int i, listindex;
char sizetext[40];
fontinfo *info;
gtk_list_store_clear(fs->size_model);
listindex = 0;
/*
* Search through the font tree for anything matching our
* current filter criteria. When we find one, add its font
* name to the list box.
*/
for (i = start; i < end; i++) {
info = (fontinfo *)index234(fs->fonts_by_selorder, i);
if (info->flags &~ fs->filter_flags) {
info->sizeindex = -1;
continue; /* we're filtering out this font */
}
if (info->size) {
sprintf(sizetext, "%d", info->size);
info->sizeindex = listindex;
gtk_list_store_append(fs->size_model, &iter);
gtk_list_store_set(fs->size_model, &iter,
0, sizetext, 1, i, 2, info->size, -1);
listindex++;
} else {
int j;
assert(i == start);
assert(i+1 == end);
for (j = 0; j < lenof(unifontsel_default_sizes); j++) {
sprintf(sizetext, "%d", unifontsel_default_sizes[j]);
gtk_list_store_append(fs->size_model, &iter);
gtk_list_store_set(fs->size_model, &iter, 0, sizetext, 1, i,
2, unifontsel_default_sizes[j], -1);
listindex++;
}
}
}
}
static void unifontsel_set_filter_buttons(unifontsel_internal *fs)
{
int i;
for (i = 0; i < lenof(fs->filter_buttons); i++) {
int flagbit = GPOINTER_TO_INT(gtk_object_get_data
(GTK_OBJECT(fs->filter_buttons[i]),
"user-data"));
gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(fs->filter_buttons[i]),
!!(fs->filter_flags & flagbit));
}
}
static void unifontsel_draw_preview_text(unifontsel_internal *fs)
{
unifont *font;
char *sizename = NULL;
fontinfo *info = fs->selected;
if (info) {
sizename = info->fontclass->scale_fontname
(GTK_WIDGET(fs->u.window), info->realname, fs->selsize);
font = info->fontclass->create(GTK_WIDGET(fs->u.window),
sizename ? sizename : info->realname,
FALSE, FALSE, 0, 0);
} else
font = NULL;
if (fs->preview_pixmap) {
GdkGC *gc = gdk_gc_new(fs->preview_pixmap);
gdk_gc_set_foreground(gc, &fs->preview_bg);
gdk_draw_rectangle(fs->preview_pixmap, gc, 1, 0, 0,
fs->preview_width, fs->preview_height);
gdk_gc_set_foreground(gc, &fs->preview_fg);
if (font) {
/*
* The pangram used here is rather carefully
* constructed: it contains a sequence of very narrow
* letters (`jil') and a pair of adjacent very wide
* letters (`wm').
*
* If the user selects a proportional font, it will be
* coerced into fixed-width character cells when used
* in the actual terminal window. We therefore display
* it the same way in the preview pane, so as to show
* it the way it will actually be displayed - and we
* deliberately pick a pangram which will show the
* resulting miskerning at its worst.
*
* We aren't trying to sell people these fonts; we're
* trying to let them make an informed choice. Better
* that they find out the problems with using
* proportional fonts in terminal windows here than
* that they go to the effort of selecting their font
* and _then_ realise it was a mistake.
*/
info->fontclass->draw_text(fs->preview_pixmap, gc, font,
0, font->ascent,
"bankrupt jilted showmen quiz convex fogey",
41, FALSE, FALSE, font->width);
info->fontclass->draw_text(fs->preview_pixmap, gc, font,
0, font->ascent + font->height,
"BANKRUPT JILTED SHOWMEN QUIZ CONVEX FOGEY",
41, FALSE, FALSE, font->width);
/*
* The ordering of punctuation here is also selected
* with some specific aims in mind. I put ` and '
* together because some software (and people) still
* use them as matched quotes no matter what Unicode
* might say on the matter, so people can quickly
* check whether they look silly in a candidate font.
* The sequence #_@ is there to let people judge the
* suitability of the underscore as an effectively
* alphabetic character (since that's how it's often
* used in practice, at least by programmers).
*/
info->fontclass->draw_text(fs->preview_pixmap, gc, font,
0, font->ascent + font->height * 2,
"0123456789!?,.:;<>()[]{}\\/`'\"+*-=~#_@|%&^$",
42, FALSE, FALSE, font->width);
}
gdk_gc_unref(gc);
gdk_window_invalidate_rect(fs->preview_area->window, NULL, FALSE);
}
if (font)
info->fontclass->destroy(font);
sfree(sizename);
}
static void unifontsel_select_font(unifontsel_internal *fs,
fontinfo *info, int size, int leftlist,
int size_is_explicit)
{
int index;
int minval, maxval;
GtkTreePath *treepath;
GtkTreeIter iter;
fs->inhibit_response = TRUE;
fs->selected = info;
fs->selsize = size;
if (size_is_explicit)
fs->intendedsize = size;
gtk_widget_set_sensitive(fs->u.ok_button, TRUE);
/*
* Find the index of this fontinfo in the selorder list.
*/
index = -1;
findpos234(fs->fonts_by_selorder, info, NULL, &index);
assert(index >= 0);
/*
* Adjust the font selector flags and redo the font family
* list box, if necessary.
*/
if (leftlist <= 0 &&
(fs->filter_flags | info->flags) != fs->filter_flags) {
fs->filter_flags |= info->flags;
unifontsel_set_filter_buttons(fs);
unifontsel_setup_familylist(fs);
}
/*
* Find the appropriate family name and select it in the list.
*/
assert(info->familyindex >= 0);
treepath = gtk_tree_path_new_from_indices(info->familyindex, -1);
gtk_tree_selection_select_path
(gtk_tree_view_get_selection(GTK_TREE_VIEW(fs->family_list)),
treepath);
gtk_tree_view_scroll_to_cell(GTK_TREE_VIEW(fs->family_list),
treepath, NULL, FALSE, 0.0, 0.0);
gtk_tree_model_get_iter(GTK_TREE_MODEL(fs->family_model), &iter, treepath);
gtk_tree_path_free(treepath);
/*
* Now set up the font style list.
*/
gtk_tree_model_get(GTK_TREE_MODEL(fs->family_model), &iter,
1, &minval, 2, &maxval, -1);
if (leftlist <= 1)
unifontsel_setup_stylelist(fs, minval, maxval);
/*
* Find the appropriate style name and select it in the list.
*/
if (info->style) {
assert(info->styleindex >= 0);
treepath = gtk_tree_path_new_from_indices(info->styleindex, -1);
gtk_tree_selection_select_path
(gtk_tree_view_get_selection(GTK_TREE_VIEW(fs->style_list)),
treepath);
gtk_tree_view_scroll_to_cell(GTK_TREE_VIEW(fs->style_list),
treepath, NULL, FALSE, 0.0, 0.0);
gtk_tree_model_get_iter(GTK_TREE_MODEL(fs->style_model),
&iter, treepath);
gtk_tree_path_free(treepath);
/*
* And set up the size list.
*/
gtk_tree_model_get(GTK_TREE_MODEL(fs->style_model), &iter,
1, &minval, 2, &maxval, -1);
if (leftlist <= 2)
unifontsel_setup_sizelist(fs, minval, maxval);
/*
* Find the appropriate size, and select it in the list.
*/
if (info->size) {
assert(info->sizeindex >= 0);
treepath = gtk_tree_path_new_from_indices(info->sizeindex, -1);
gtk_tree_selection_select_path
(gtk_tree_view_get_selection(GTK_TREE_VIEW(fs->size_list)),
treepath);
gtk_tree_view_scroll_to_cell(GTK_TREE_VIEW(fs->size_list),
treepath, NULL, FALSE, 0.0, 0.0);
gtk_tree_path_free(treepath);
size = info->size;
} else {
int j;
for (j = 0; j < lenof(unifontsel_default_sizes); j++)
if (unifontsel_default_sizes[j] == size) {
treepath = gtk_tree_path_new_from_indices(j, -1);
gtk_tree_view_set_cursor(GTK_TREE_VIEW(fs->size_list),
treepath, NULL, FALSE);
gtk_tree_view_scroll_to_cell(GTK_TREE_VIEW(fs->size_list),
treepath, NULL, FALSE, 0.0,
0.0);
gtk_tree_path_free(treepath);
}
}
/*
* And set up the font size text entry box.
*/
{
char sizetext[40];
sprintf(sizetext, "%d", size);
gtk_entry_set_text(GTK_ENTRY(fs->size_entry), sizetext);
}
} else {
if (leftlist <= 2)
unifontsel_setup_sizelist(fs, 0, 0);
gtk_entry_set_text(GTK_ENTRY(fs->size_entry), "");
}
/*
* Grey out the font size edit box if we're not using a
* scalable font.
*/
gtk_entry_set_editable(GTK_ENTRY(fs->size_entry), fs->selected->size == 0);
gtk_widget_set_sensitive(fs->size_entry, fs->selected->size == 0);
unifontsel_draw_preview_text(fs);
fs->inhibit_response = FALSE;
}
static void unifontsel_button_toggled(GtkToggleButton *tb, gpointer data)
{
unifontsel_internal *fs = (unifontsel_internal *)data;
int newstate = gtk_toggle_button_get_active(tb);
int newflags;
int flagbit = GPOINTER_TO_INT(gtk_object_get_data(GTK_OBJECT(tb),
"user-data"));
if (newstate)
newflags = fs->filter_flags | flagbit;
else
newflags = fs->filter_flags & ~flagbit;
if (fs->filter_flags != newflags) {
fs->filter_flags = newflags;
unifontsel_setup_familylist(fs);
}
}
static void unifontsel_add_entry(void *ctx, const char *realfontname,
const char *family, const char *charset,
const char *style, const char *stylekey,
int size, int flags,
const struct unifont_vtable *fontclass)
{
unifontsel_internal *fs = (unifontsel_internal *)ctx;
fontinfo *info;
int totalsize;
char *p;
totalsize = sizeof(fontinfo) + strlen(realfontname) +
(family ? strlen(family) : 0) + (charset ? strlen(charset) : 0) +
(style ? strlen(style) : 0) + (stylekey ? strlen(stylekey) : 0) + 10;
info = (fontinfo *)smalloc(totalsize);
info->fontclass = fontclass;
p = (char *)info + sizeof(fontinfo);
info->realname = p;
strcpy(p, realfontname);
p += 1+strlen(p);
if (family) {
info->family = p;
strcpy(p, family);
p += 1+strlen(p);
} else
info->family = NULL;
if (charset) {
info->charset = p;
strcpy(p, charset);
p += 1+strlen(p);
} else
info->charset = NULL;
if (style) {
info->style = p;
strcpy(p, style);
p += 1+strlen(p);
} else
info->style = NULL;
if (stylekey) {
info->stylekey = p;
strcpy(p, stylekey);
p += 1+strlen(p);
} else
info->stylekey = NULL;
assert(p - (char *)info <= totalsize);
info->size = size;
info->flags = flags;
info->index = count234(fs->fonts_by_selorder);
/*
* It's just conceivable that a misbehaving font enumerator
* might tell us about the same font real name more than once,
* in which case we should silently drop the new one.
*/
if (add234(fs->fonts_by_realname, info) != info) {
sfree(info);
return;
}
/*
* However, we should never get a duplicate key in the
* selorder tree, because the index field carefully
* disambiguates otherwise identical records.
*/
add234(fs->fonts_by_selorder, info);
}
static fontinfo *update_for_intended_size(unifontsel_internal *fs,
fontinfo *info)
{
fontinfo info2, *below, *above;
int pos;
/*
* Copy the info structure. This doesn't copy its dynamic
* string fields, but that's unimportant because all we're
* going to do is to adjust the size field and use it in one
* tree search.
*/
info2 = *info;
info2.size = fs->intendedsize;
/*
* Search in the tree to find the fontinfo structure which
* best approximates the size the user last requested.
*/
below = findrelpos234(fs->fonts_by_selorder, &info2, NULL,
REL234_LE, &pos);
above = index234(fs->fonts_by_selorder, pos+1);
/*
* See if we've found it exactly, which is an easy special
* case. If we have, it'll be in `below' and not `above',
* because we did a REL234_LE rather than REL234_LT search.
*/
if (!fontinfo_selorder_compare(&info2, below))
return below;
/*
* Now we've either found two suitable fonts, one smaller and
* one larger, or we're at one or other extreme end of the
* scale. Find out which, by NULLing out either of below and
* above if it differs from this one in any respect but size
* (and the disambiguating index field). Bear in mind, also,
* that either one might _already_ be NULL if we're at the
* extreme ends of the font list.
*/
if (below) {
info2.size = below->size;
info2.index = below->index;
if (fontinfo_selorder_compare(&info2, below))
below = NULL;
}
if (above) {
info2.size = above->size;
info2.index = above->index;
if (fontinfo_selorder_compare(&info2, above))
above = NULL;
}
/*
* Now return whichever of above and below is non-NULL, if
* that's unambiguous.
*/
if (!above)
return below;
if (!below)
return above;
/*
* And now we really do have to make a choice about whether to
* round up or down. We'll do it by rounding to nearest,
* breaking ties by rounding up.
*/
if (above->size - fs->intendedsize <= fs->intendedsize - below->size)
return above;
else
return below;
}
static void family_changed(GtkTreeSelection *treeselection, gpointer data)
{
unifontsel_internal *fs = (unifontsel_internal *)data;
GtkTreeModel *treemodel;
GtkTreeIter treeiter;
int minval;
fontinfo *info;
if (fs->inhibit_response) /* we made this change ourselves */
return;
if (!gtk_tree_selection_get_selected(treeselection, &treemodel, &treeiter))
return;
gtk_tree_model_get(treemodel, &treeiter, 1, &minval, -1);
info = (fontinfo *)index234(fs->fonts_by_selorder, minval);
info = update_for_intended_size(fs, info);
if (!info)
return; /* _shouldn't_ happen unless font list is completely funted */
if (!info->size)
fs->selsize = fs->intendedsize; /* font is scalable */
unifontsel_select_font(fs, info, info->size ? info->size : fs->selsize,
1, FALSE);
}
static void style_changed(GtkTreeSelection *treeselection, gpointer data)
{
unifontsel_internal *fs = (unifontsel_internal *)data;
GtkTreeModel *treemodel;
GtkTreeIter treeiter;
int minval;
fontinfo *info;
if (fs->inhibit_response) /* we made this change ourselves */
return;
if (!gtk_tree_selection_get_selected(treeselection, &treemodel, &treeiter))
return;
gtk_tree_model_get(treemodel, &treeiter, 1, &minval, -1);
if (minval < 0)
return; /* somehow a charset heading got clicked */
info = (fontinfo *)index234(fs->fonts_by_selorder, minval);
info = update_for_intended_size(fs, info);
if (!info)
return; /* _shouldn't_ happen unless font list is completely funted */
if (!info->size)
fs->selsize = fs->intendedsize; /* font is scalable */
unifontsel_select_font(fs, info, info->size ? info->size : fs->selsize,
2, FALSE);
}
static void size_changed(GtkTreeSelection *treeselection, gpointer data)
{
unifontsel_internal *fs = (unifontsel_internal *)data;
GtkTreeModel *treemodel;
GtkTreeIter treeiter;
int minval, size;
fontinfo *info;
if (fs->inhibit_response) /* we made this change ourselves */
return;
if (!gtk_tree_selection_get_selected(treeselection, &treemodel, &treeiter))
return;
gtk_tree_model_get(treemodel, &treeiter, 1, &minval, 2, &size, -1);
info = (fontinfo *)index234(fs->fonts_by_selorder, minval);
unifontsel_select_font(fs, info, info->size ? info->size : size, 3, TRUE);
}
static void size_entry_changed(GtkEditable *ed, gpointer data)
{
unifontsel_internal *fs = (unifontsel_internal *)data;
const char *text;
int size;
if (fs->inhibit_response) /* we made this change ourselves */
return;
text = gtk_entry_get_text(GTK_ENTRY(ed));
size = atoi(text);
if (size > 0) {
assert(fs->selected->size == 0);
unifontsel_select_font(fs, fs->selected, size, 3, TRUE);
}
}
static void alias_resolve(GtkTreeView *treeview, GtkTreePath *path,
GtkTreeViewColumn *column, gpointer data)
{
unifontsel_internal *fs = (unifontsel_internal *)data;
GtkTreeIter iter;
int minval, newsize;
fontinfo *info, *newinfo;
char *newname;
if (fs->inhibit_response) /* we made this change ourselves */
return;
gtk_tree_model_get_iter(GTK_TREE_MODEL(fs->family_model), &iter, path);
gtk_tree_model_get(GTK_TREE_MODEL(fs->family_model), &iter, 1,&minval, -1);
info = (fontinfo *)index234(fs->fonts_by_selorder, minval);
if (info) {
int flags;
struct fontinfo_realname_find f;
newname = info->fontclass->canonify_fontname
(GTK_WIDGET(fs->u.window), info->realname, &newsize, &flags, TRUE);
f.realname = newname;
f.flags = flags;
newinfo = find234(fs->fonts_by_realname, &f, fontinfo_realname_find);
sfree(newname);
if (!newinfo)
return; /* font name not in our index */
if (newinfo == info)
return; /* didn't change under canonification => not an alias */
unifontsel_select_font(fs, newinfo,
newinfo->size ? newinfo->size : newsize,
1, TRUE);
}
}
static gint unifontsel_expose_area(GtkWidget *widget, GdkEventExpose *event,
gpointer data)
{
unifontsel_internal *fs = (unifontsel_internal *)data;
if (fs->preview_pixmap) {
gdk_draw_pixmap(widget->window,
widget->style->fg_gc[GTK_WIDGET_STATE(widget)],
fs->preview_pixmap,
event->area.x, event->area.y,
event->area.x, event->area.y,
event->area.width, event->area.height);
}
return TRUE;
}
static gint unifontsel_configure_area(GtkWidget *widget,
GdkEventConfigure *event, gpointer data)
{
unifontsel_internal *fs = (unifontsel_internal *)data;
int ox, oy, nx, ny, x, y;
/*
* Enlarge the pixmap, but never shrink it.
*/
ox = fs->preview_width;
oy = fs->preview_height;
x = event->width;
y = event->height;
if (x > ox || y > oy) {
if (fs->preview_pixmap)
gdk_pixmap_unref(fs->preview_pixmap);
nx = (x > ox ? x : ox);
ny = (y > oy ? y : oy);
fs->preview_pixmap = gdk_pixmap_new(widget->window, nx, ny, -1);
fs->preview_width = nx;
fs->preview_height = ny;
unifontsel_draw_preview_text(fs);
}
gdk_window_invalidate_rect(widget->window, NULL, FALSE);
return TRUE;
}
unifontsel *unifontsel_new(const char *wintitle)
{
unifontsel_internal *fs = snew(unifontsel_internal);
GtkWidget *table, *label, *w, *ww, *scroll;
GtkListStore *model;
GtkTreeViewColumn *column;
int lists_height, preview_height, font_width, style_width, size_width;
int i;
fs->inhibit_response = FALSE;
fs->selected = NULL;
{
/*
* Invent some magic size constants.
*/
GtkRequisition req;
label = gtk_label_new("Quite Long Font Name (Foundry)");
gtk_widget_size_request(label, &req);
font_width = req.width;
lists_height = 14 * req.height;
preview_height = 5 * req.height;
gtk_label_set_text(GTK_LABEL(label), "Italic Extra Condensed");
gtk_widget_size_request(label, &req);
style_width = req.width;
gtk_label_set_text(GTK_LABEL(label), "48000");
gtk_widget_size_request(label, &req);
size_width = req.width;
#if GTK_CHECK_VERSION(2,10,0)
g_object_ref_sink(label);
g_object_unref(label);
#else
gtk_object_sink(GTK_OBJECT(label));
#endif
}
/*
* Create the dialog box and initialise the user-visible
* fields in the returned structure.
*/
fs->u.user_data = NULL;
fs->u.window = GTK_WINDOW(gtk_dialog_new());
gtk_window_set_title(fs->u.window, wintitle);
fs->u.cancel_button = gtk_dialog_add_button
(GTK_DIALOG(fs->u.window), GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL);
fs->u.ok_button = gtk_dialog_add_button
(GTK_DIALOG(fs->u.window), GTK_STOCK_OK, GTK_RESPONSE_OK);
gtk_widget_grab_default(fs->u.ok_button);
/*
* Now set up the internal fields, including in particular all
* the controls that actually allow the user to select fonts.
*/
table = gtk_table_new(8, 3, FALSE);
gtk_widget_show(table);
gtk_table_set_col_spacings(GTK_TABLE(table), 8);
#if GTK_CHECK_VERSION(2,4,0)
/* GtkAlignment seems to be the simplest way to put padding round things */
w = gtk_alignment_new(0, 0, 1, 1);
gtk_alignment_set_padding(GTK_ALIGNMENT(w), 8, 8, 8, 8);
gtk_container_add(GTK_CONTAINER(w), table);
gtk_widget_show(w);
#else
w = table;
#endif
gtk_box_pack_start(GTK_BOX(GTK_DIALOG(fs->u.window)->vbox),
w, TRUE, TRUE, 0);
label = gtk_label_new_with_mnemonic("_Font:");
gtk_widget_show(label);
gtk_misc_set_alignment(GTK_MISC(label), 0.0, 0.0);
gtk_table_attach(GTK_TABLE(table), label, 0, 1, 0, 1, GTK_FILL, 0, 0, 0);
/*
* The Font list box displays only a string, but additionally
* stores two integers which give the limits within the
* tree234 of the font entries covered by this list entry.
*/
model = gtk_list_store_new(3, G_TYPE_STRING, G_TYPE_INT, G_TYPE_INT);
w = gtk_tree_view_new_with_model(GTK_TREE_MODEL(model));
gtk_tree_view_set_headers_visible(GTK_TREE_VIEW(w), FALSE);
gtk_label_set_mnemonic_widget(GTK_LABEL(label), w);
gtk_widget_show(w);
column = gtk_tree_view_column_new_with_attributes
("Font", gtk_cell_renderer_text_new(),
"text", 0, (char *)NULL);
gtk_tree_view_column_set_sizing(column, GTK_TREE_VIEW_COLUMN_AUTOSIZE);
gtk_tree_view_append_column(GTK_TREE_VIEW(w), column);
g_signal_connect(G_OBJECT(gtk_tree_view_get_selection(GTK_TREE_VIEW(w))),
"changed", G_CALLBACK(family_changed), fs);
g_signal_connect(G_OBJECT(w), "row-activated",
G_CALLBACK(alias_resolve), fs);
scroll = gtk_scrolled_window_new(NULL, NULL);
gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(scroll),
GTK_SHADOW_IN);
gtk_container_add(GTK_CONTAINER(scroll), w);
gtk_widget_show(scroll);
gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scroll),
GTK_POLICY_AUTOMATIC, GTK_POLICY_ALWAYS);
gtk_widget_set_size_request(scroll, font_width, lists_height);
gtk_table_attach(GTK_TABLE(table), scroll, 0, 1, 1, 3, GTK_FILL,
GTK_EXPAND | GTK_FILL, 0, 0);
fs->family_model = model;
fs->family_list = w;
label = gtk_label_new_with_mnemonic("_Style:");
gtk_widget_show(label);
gtk_misc_set_alignment(GTK_MISC(label), 0.0, 0.0);
gtk_table_attach(GTK_TABLE(table), label, 1, 2, 0, 1, GTK_FILL, 0, 0, 0);
/*
* The Style list box can contain insensitive elements
* (character set headings for server-side fonts), so we add
* an extra column to the list store to hold that information.
*/
model = gtk_list_store_new(4, G_TYPE_STRING, G_TYPE_INT, G_TYPE_INT,
G_TYPE_BOOLEAN);
w = gtk_tree_view_new_with_model(GTK_TREE_MODEL(model));
gtk_tree_view_set_headers_visible(GTK_TREE_VIEW(w), FALSE);
gtk_label_set_mnemonic_widget(GTK_LABEL(label), w);
gtk_widget_show(w);
column = gtk_tree_view_column_new_with_attributes
("Style", gtk_cell_renderer_text_new(),
"text", 0, "sensitive", 3, (char *)NULL);
gtk_tree_view_column_set_sizing(column, GTK_TREE_VIEW_COLUMN_AUTOSIZE);
gtk_tree_view_append_column(GTK_TREE_VIEW(w), column);
g_signal_connect(G_OBJECT(gtk_tree_view_get_selection(GTK_TREE_VIEW(w))),
"changed", G_CALLBACK(style_changed), fs);
scroll = gtk_scrolled_window_new(NULL, NULL);
gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(scroll),
GTK_SHADOW_IN);
gtk_container_add(GTK_CONTAINER(scroll), w);
gtk_widget_show(scroll);
gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scroll),
GTK_POLICY_AUTOMATIC, GTK_POLICY_ALWAYS);
gtk_widget_set_size_request(scroll, style_width, lists_height);
gtk_table_attach(GTK_TABLE(table), scroll, 1, 2, 1, 3, GTK_FILL,
GTK_EXPAND | GTK_FILL, 0, 0);
fs->style_model = model;
fs->style_list = w;
label = gtk_label_new_with_mnemonic("Si_ze:");
gtk_widget_show(label);
gtk_misc_set_alignment(GTK_MISC(label), 0.0, 0.0);
gtk_table_attach(GTK_TABLE(table), label, 2, 3, 0, 1, GTK_FILL, 0, 0, 0);
/*
* The Size label attaches primarily to a text input box so
* that the user can select a size of their choice. The list
* of available sizes is secondary.
*/
fs->size_entry = w = gtk_entry_new();
gtk_label_set_mnemonic_widget(GTK_LABEL(label), w);
gtk_widget_set_size_request(w, size_width, -1);
gtk_widget_show(w);
gtk_table_attach(GTK_TABLE(table), w, 2, 3, 1, 2, GTK_FILL, 0, 0, 0);
g_signal_connect(G_OBJECT(w), "changed", G_CALLBACK(size_entry_changed),
fs);
model = gtk_list_store_new(3, G_TYPE_STRING, G_TYPE_INT, G_TYPE_INT);
w = gtk_tree_view_new_with_model(GTK_TREE_MODEL(model));
gtk_tree_view_set_headers_visible(GTK_TREE_VIEW(w), FALSE);
gtk_widget_show(w);
column = gtk_tree_view_column_new_with_attributes
("Size", gtk_cell_renderer_text_new(),
"text", 0, (char *)NULL);
gtk_tree_view_column_set_sizing(column, GTK_TREE_VIEW_COLUMN_AUTOSIZE);
gtk_tree_view_append_column(GTK_TREE_VIEW(w), column);
g_signal_connect(G_OBJECT(gtk_tree_view_get_selection(GTK_TREE_VIEW(w))),
"changed", G_CALLBACK(size_changed), fs);
scroll = gtk_scrolled_window_new(NULL, NULL);
gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(scroll),
GTK_SHADOW_IN);
gtk_container_add(GTK_CONTAINER(scroll), w);
gtk_widget_show(scroll);
gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scroll),
GTK_POLICY_AUTOMATIC, GTK_POLICY_ALWAYS);
gtk_table_attach(GTK_TABLE(table), scroll, 2, 3, 2, 3, GTK_FILL,
GTK_EXPAND | GTK_FILL, 0, 0);
fs->size_model = model;
fs->size_list = w;
/*
* Preview widget.
*/
fs->preview_area = gtk_drawing_area_new();
fs->preview_pixmap = NULL;
fs->preview_width = 0;
fs->preview_height = 0;
fs->preview_fg.pixel = fs->preview_bg.pixel = 0;
fs->preview_fg.red = fs->preview_fg.green = fs->preview_fg.blue = 0x0000;
fs->preview_bg.red = fs->preview_bg.green = fs->preview_bg.blue = 0xFFFF;
gdk_colormap_alloc_color(gdk_colormap_get_system(), &fs->preview_fg,
FALSE, FALSE);
gdk_colormap_alloc_color(gdk_colormap_get_system(), &fs->preview_bg,
FALSE, FALSE);
gtk_signal_connect(GTK_OBJECT(fs->preview_area), "expose_event",
GTK_SIGNAL_FUNC(unifontsel_expose_area), fs);
gtk_signal_connect(GTK_OBJECT(fs->preview_area), "configure_event",
GTK_SIGNAL_FUNC(unifontsel_configure_area), fs);
gtk_widget_set_size_request(fs->preview_area, 1, preview_height);
gtk_widget_show(fs->preview_area);
ww = fs->preview_area;
w = gtk_frame_new(NULL);
gtk_container_add(GTK_CONTAINER(w), ww);
gtk_widget_show(w);
#if GTK_CHECK_VERSION(2,4,0)
ww = w;
/* GtkAlignment seems to be the simplest way to put padding round things */
w = gtk_alignment_new(0, 0, 1, 1);
gtk_alignment_set_padding(GTK_ALIGNMENT(w), 8, 8, 8, 8);
gtk_container_add(GTK_CONTAINER(w), ww);
gtk_widget_show(w);
#endif
ww = w;
w = gtk_frame_new("Preview of font");
gtk_container_add(GTK_CONTAINER(w), ww);
gtk_widget_show(w);
gtk_table_attach(GTK_TABLE(table), w, 0, 3, 3, 4,
GTK_EXPAND | GTK_FILL, GTK_EXPAND | GTK_FILL, 0, 8);
i = 0;
w = gtk_check_button_new_with_label("Show client-side fonts");
gtk_object_set_data(GTK_OBJECT(w), "user-data",
GINT_TO_POINTER(FONTFLAG_CLIENTSIDE));
gtk_signal_connect(GTK_OBJECT(w), "toggled",
GTK_SIGNAL_FUNC(unifontsel_button_toggled), fs);
gtk_widget_show(w);
fs->filter_buttons[i++] = w;
gtk_table_attach(GTK_TABLE(table), w, 0, 3, 4, 5, GTK_FILL, 0, 0, 0);
w = gtk_check_button_new_with_label("Show server-side fonts");
gtk_object_set_data(GTK_OBJECT(w), "user-data",
GINT_TO_POINTER(FONTFLAG_SERVERSIDE));
gtk_signal_connect(GTK_OBJECT(w), "toggled",
GTK_SIGNAL_FUNC(unifontsel_button_toggled), fs);
gtk_widget_show(w);
fs->filter_buttons[i++] = w;
gtk_table_attach(GTK_TABLE(table), w, 0, 3, 5, 6, GTK_FILL, 0, 0, 0);
w = gtk_check_button_new_with_label("Show server-side font aliases");
gtk_object_set_data(GTK_OBJECT(w), "user-data",
GINT_TO_POINTER(FONTFLAG_SERVERALIAS));
gtk_signal_connect(GTK_OBJECT(w), "toggled",
GTK_SIGNAL_FUNC(unifontsel_button_toggled), fs);
gtk_widget_show(w);
fs->filter_buttons[i++] = w;
gtk_table_attach(GTK_TABLE(table), w, 0, 3, 6, 7, GTK_FILL, 0, 0, 0);
w = gtk_check_button_new_with_label("Show non-monospaced fonts");
gtk_object_set_data(GTK_OBJECT(w), "user-data",
GINT_TO_POINTER(FONTFLAG_NONMONOSPACED));
gtk_signal_connect(GTK_OBJECT(w), "toggled",
GTK_SIGNAL_FUNC(unifontsel_button_toggled), fs);
gtk_widget_show(w);
fs->filter_buttons[i++] = w;
gtk_table_attach(GTK_TABLE(table), w, 0, 3, 7, 8, GTK_FILL, 0, 0, 0);
assert(i == lenof(fs->filter_buttons));
fs->filter_flags = FONTFLAG_CLIENTSIDE | FONTFLAG_SERVERSIDE |
FONTFLAG_SERVERALIAS;
unifontsel_set_filter_buttons(fs);
/*
* Go and find all the font names, and set up our master font
* list.
*/
fs->fonts_by_realname = newtree234(fontinfo_realname_compare);
fs->fonts_by_selorder = newtree234(fontinfo_selorder_compare);
for (i = 0; i < lenof(unifont_types); i++)
unifont_types[i]->enum_fonts(GTK_WIDGET(fs->u.window),
unifontsel_add_entry, fs);
/*
* And set up the initial font names list.
*/
unifontsel_setup_familylist(fs);
fs->selsize = fs->intendedsize = 13; /* random default */
gtk_widget_set_sensitive(fs->u.ok_button, FALSE);
return (unifontsel *)fs;
}
void unifontsel_destroy(unifontsel *fontsel)
{
unifontsel_internal *fs = (unifontsel_internal *)fontsel;
fontinfo *info;
if (fs->preview_pixmap)
gdk_pixmap_unref(fs->preview_pixmap);
freetree234(fs->fonts_by_selorder);
while ((info = delpos234(fs->fonts_by_realname, 0)) != NULL)
sfree(info);
freetree234(fs->fonts_by_realname);
gtk_widget_destroy(GTK_WIDGET(fs->u.window));
sfree(fs);
}
void unifontsel_set_name(unifontsel *fontsel, const char *fontname)
{
unifontsel_internal *fs = (unifontsel_internal *)fontsel;
int i, start, end, size, flags;
const char *fontname2 = NULL;
fontinfo *info;
/*
* Provide a default if given an empty or null font name.
*/
if (!fontname || !*fontname)
fontname = "server:fixed";
/*
* Call the canonify_fontname function.
*/
fontname = unifont_do_prefix(fontname, &start, &end);
for (i = start; i < end; i++) {
fontname2 = unifont_types[i]->canonify_fontname
(GTK_WIDGET(fs->u.window), fontname, &size, &flags, FALSE);
if (fontname2)
break;
}
if (i == end)
return; /* font name not recognised */
/*
* Now look up the canonified font name in our index.
*/
{
struct fontinfo_realname_find f;
f.realname = fontname2;
f.flags = flags;
info = find234(fs->fonts_by_realname, &f, fontinfo_realname_find);
}
/*
* If we've found the font, and its size field is either
* correct or zero (the latter indicating a scalable font),
* then we're done. Otherwise, try looking up the original
* font name instead.
*/
if (!info || (info->size != size && info->size != 0)) {
struct fontinfo_realname_find f;
f.realname = fontname;
f.flags = flags;
info = find234(fs->fonts_by_realname, &f, fontinfo_realname_find);
if (!info || info->size != size)
return; /* font name not in our index */
}
/*
* Now we've got a fontinfo structure and a font size, so we
* know everything we need to fill in all the fields in the
* dialog.
*/
unifontsel_select_font(fs, info, size, 0, TRUE);
}
char *unifontsel_get_name(unifontsel *fontsel)
{
unifontsel_internal *fs = (unifontsel_internal *)fontsel;
char *name;
if (!fs->selected)
return NULL;
if (fs->selected->size == 0) {
name = fs->selected->fontclass->scale_fontname
(GTK_WIDGET(fs->u.window), fs->selected->realname, fs->selsize);
if (name) {
char *ret = dupcat(fs->selected->fontclass->prefix, ":",
name, NULL);
sfree(name);
return ret;
}
}
return dupcat(fs->selected->fontclass->prefix, ":",
fs->selected->realname, NULL);
}
#endif /* GTK_CHECK_VERSION(2,0,0) */
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