--- /dev/null
+/*
+ * 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.
+ *
+ * - all the GDK font functions used in the x11font subclass are
+ * deprecated, so one day they may go away. When this happens -
+ * or before, if I'm feeling proactive - it oughtn't to be too
+ * difficult in principle to convert the whole thing to use
+ * actual Xlib font calls.
+ *
+ * - 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;
+};
+
+/* ----------------------------------------------------------------------
+ * GDK-based X11 font implementation.
+ */
+
+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).
+ */
+ GdkFont *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 gdk_draw_text_wc() or gdk_draw_text().
+ */
+ 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",
+};
+
+char *x11_guess_derived_font_name(GdkFont *font, int bold, int wide)
+{
+ XFontStruct *xfs = GDK_FONT_XFONT(font);
+ Display *disp = GDK_FONT_XDISPLAY(font);
+ 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(GdkFont *font, int sixteen_bit)
+{
+ if (sixteen_bit) {
+ XChar2b space;
+ space.byte1 = 0;
+ space.byte2 = '0';
+ return gdk_text_width(font, (const gchar *)&space, 2);
+ } else {
+ return gdk_char_width(font, '0');
+ }
+}
+
+static unifont *x11font_create(GtkWidget *widget, const char *name,
+ int wide, int bold,
+ int shadowoffset, int shadowalways)
+{
+ struct x11font *xfont;
+ GdkFont *font;
+ XFontStruct *xfs;
+ Display *disp;
+ Atom charset_registry, charset_encoding, spacing;
+ unsigned long registry_ret, encoding_ret, spacing_ret;
+ int pubcs, realcs, sixteen_bit, variable;
+ int i;
+
+ font = gdk_font_load(name);
+ if (!font)
+ return NULL;
+
+ xfs = GDK_FONT_XFONT(font);
+ disp = GDK_FONT_XDISPLAY(font);
+
+ 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, ®istry_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 lb, rb, wid, asc, desc;
+ gchar text[2];
+
+ text[1] = '\0';
+ text[0] = '\x12';
+ gdk_string_extents(font, text, &lb, &rb, &wid, &asc, &desc);
+ 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(font, sixteen_bit);
+ xfont->u.ascent = font->ascent;
+ xfont->u.descent = font->descent;
+ xfont->u.height = xfont->u.ascent + xfont->u.descent;
+ xfont->u.public_charset = pubcs;
+ xfont->u.real_charset = realcs;
+ xfont->fonts[0] = font;
+ 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)
+{
+ struct x11font *xfont = (struct x11font *)font;
+ int i;
+
+ for (i = 0; i < lenof(xfont->fonts); i++)
+ if (xfont->fonts[i])
+ gdk_font_unref(xfont->fonts[i]);
+ sfree(font);
+}
+
+static void x11_alloc_subfont(struct x11font *xfont, int sfid)
+{
+ char *derived_name = x11_guess_derived_font_name
+ (xfont->fonts[0], sfid & 1, !!(sfid & 2));
+ xfont->fonts[sfid] = gdk_font_load(derived_name); /* may be NULL */
+ xfont->allocated[sfid] = TRUE;
+ sfree(derived_name);
+}
+
+static void x11font_really_draw_text(GdkDrawable *target, GdkFont *font,
+ GdkGC *gc, int x, int y,
+ const gchar *string, int clen, int nchars,
+ int shadowbold, int shadowoffset,
+ int fontvariable, int cellwidth)
+{
+ int step = clen * nchars, nsteps = 1, centre = FALSE;
+
+ if (fontvariable) {
+ /*
+ * In a variable-pitch font, we draw one character at a
+ * time, and centre it in the character cell.
+ */
+ step = clen;
+ nsteps = nchars;
+ centre = TRUE;
+ }
+
+ while (nsteps-- > 0) {
+ int X = x;
+ if (centre)
+ X += (cellwidth - gdk_text_width(font, string, step)) / 2;
+
+ gdk_draw_text(target, font, gc, X, y, string, step);
+ if (shadowbold)
+ gdk_draw_text(target, font, gc, X + shadowoffset, y, string, step);
+
+ x += cellwidth;
+ string += step;
+ }
+}
+
+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)
+{
+ struct x11font *xfont = (struct x11font *)font;
+ int sfid;
+ int shadowbold = FALSE;
+ 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) {
+ shadowbold = TRUE;
+ bold = 0;
+ }
+ sfid = 2 * wide + bold;
+ if (!xfont->allocated[sfid])
+ x11_alloc_subfont(xfont, sfid);
+ if (bold && !xfont->fonts[sfid]) {
+ bold = 0;
+ shadowbold = TRUE;
+ 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 */
+
+ 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(target, xfont->fonts[sfid], gc, x, y,
+ (gchar *)xcs, 2, nchars,
+ shadowbold, xfont->shadowoffset,
+ xfont->variable, cellwidth * mult);
+ sfree(xcs);
+ sfree(wcs);
+ } else {
+ x11font_really_draw_text(target, xfont->fonts[sfid], gc, x, y,
+ string, 1, len,
+ shadowbold, xfont->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.
+ */
+ GdkFont *font = gdk_font_load(name);
+ XFontStruct *xfs;
+ Display *disp;
+ Atom fontprop, fontprop2;
+ unsigned long ret;
+
+ if (!font)
+ return NULL; /* didn't make sense to us, sorry */
+
+ gdk_font_ref(font);
+
+ xfs = GDK_FONT_XFONT(font);
+ disp = GDK_FONT_XDISPLAY(font);
+ 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;
+ gdk_font_unref(font);
+ if (flags) {
+ if (name[0] == '-' || resolve_aliases)
+ *flags = FONTFLAG_SERVERSIDE;
+ else
+ *flags = FONTFLAG_SERVERALIAS;
+ }
+ return dupstr(name[0] == '-' || resolve_aliases ?
+ newname : name);
+ }
+ }
+ }
+
+ gdk_font_unref(font);
+ 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;
+
+ /*
+ * Extract a single UTF-8 character from the string.
+ */
+ clen = 1;
+ while (clen < len &&
+ (unsigned char)string[clen] >= 0x80 &&
+ (unsigned char)string[clen] < 0xC0)
+ clen++;
+
+ pango_layout_set_text(layout, string, clen);
+ pango_layout_get_pixel_extents(layout, NULL, &rect);
+ gdk_draw_layout(target, gc, x + (cellwidth - rect.width)/2,
+ y + (pfont->u.height - rect.height)/2, layout);
+ if (shadowbold)
+ gdk_draw_layout(target, gc, x + (cellwidth - rect.width)/2 + pfont->shadowoffset,
+ y + (pfont->u.height - rect.height)/2, layout);
+
+ len -= clen;
+ string += clen;
+ x += 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) */
projects / u / mdw / putty / commitdiff