X-Git-Url: http://git.hungrycats.org/cgi-bin/gitweb.cgi?p=xscreensaver;a=blobdiff_plain;f=hacks%2Ffontglide.c;fp=hacks%2Ffontglide.c;h=b9aa2e0c72e93eb189c744ef40a32c30876a9dbb;hp=22a136b4529d11a5a8390f644810522928ef49dc;hb=d5186197bc394e10a4402f7f6d23fbb14103bc50;hpb=6afd6db0ae9396cd7ff897ade597cd5483f49b0e diff --git a/hacks/fontglide.c b/hacks/fontglide.c index 22a136b4..b9aa2e0c 100644 --- a/hacks/fontglide.c +++ b/hacks/fontglide.c @@ -17,7 +17,12 @@ # include "config.h" #endif /* HAVE_CONFIG_H */ -#undef DEBUG + +/* If you turn on DEBUG, this program also masquerades as a tool for + debugging font metrics issues, which is probably only if interest + if you are doing active development on libjwxyz.a itself. + */ +/* #define DEBUG */ #include @@ -31,6 +36,8 @@ #include "screenhack.h" #include "textclient.h" +#include "xft.h" +#include "utf8wc.h" #ifdef HAVE_DOUBLE_BUFFER_EXTENSION #include "xdbe.h" @@ -38,8 +45,15 @@ typedef struct { char *text; - int x, y, width, height; - int ascent, lbearing, rbearing; + + int x, y; /* Position of origin of first character in word */ + + /* These have the same meanings as in XCharStruct: */ + int lbearing; /* origin to leftmost pixel */ + int rbearing; /* origin to rightmost pixel */ + int ascent; /* origin to topmost pixel */ + int descent; /* origin to bottommost pixel */ + int width; /* origin to next word's origin */ int nticks, tick; int start_x, start_y; @@ -50,16 +64,14 @@ typedef struct { typedef struct { int id; - XColor fg; - XColor bg; Bool dark_p; Bool move_chars_p; int width; char *font_name; - XFontStruct *font; - GC fg_gc; + XftFont *xftfont; + XftColor xftcolor_fg, xftcolor_bg; int nwords; word **words; @@ -160,11 +172,16 @@ pick_font_1 (state *s, sentence *se) int count = 0, count2 = 0; int i; - if (se->font) + if (se->xftfont) { - XFreeFont (s->dpy, se->font); + XftFontClose (s->dpy, se->xftfont); + XftColorFree (s->dpy, s->xgwa.visual, s->xgwa.colormap, + &se->xftcolor_fg); + XftColorFree (s->dpy, s->xgwa.visual, s->xgwa.colormap, + &se->xftcolor_bg); + free (se->font_name); - se->font = 0; + se->xftfont = 0; se->font_name = 0; } @@ -203,9 +220,12 @@ pick_font_1 (state *s, sentence *se) names2 = XListFontsWithInfo (s->dpy, names[i], 1000, &count2, &info); if (count2 <= 0) { - fprintf (stderr, "%s: pattern %s\n" - " gave unusable %s\n\n", - progname, pattern, names[i]); +# ifdef DEBUG + if (s->debug_p) + fprintf (stderr, "%s: pattern %s\n" + " gave unusable %s\n\n", + progname, pattern, names[i]); +# endif /* DEBUG */ goto FAIL; } @@ -321,30 +341,98 @@ pick_font_1 (state *s, sentence *se) if (! ok) return False; - se->font = XLoadQueryFont (s->dpy, pattern); + se->xftfont = XftFontOpenXlfd (s->dpy, screen_number (s->xgwa.screen), + pattern); + + /* Sometimes we get fonts with screwed up metrics. For example: + -b&h-lucida-medium-r-normal-sans-40-289-100-100-p-0-iso8859-1 + + When using XDrawString, XTextExtents and XTextExtents16, it is rendered + as a scaled-up bitmap font. The character M has rbearing 70, ascent 68 + and width 78, which is correct for the glyph as rendered. + + But when using XftDrawStringUtf8 and XftTextExtentsUtf8, it is rendered + at the original, smaller, un-scaled size, with rbearing 26, ascent 25 + and... width 77! + + So it's taking the *size* from the unscaled font, the *advancement* from + the scaled-up version, and then *not* actually scaling it up. Awesome. + + So, after loading the font, measure the M, and if its advancement is more + than 20% larger than its rbearing, reject the font. + + ------------------------------------------------------------------------ + + Some observations on this nonsense from Dave Odell: + + 1. -*-lucidatypewriter-bold-r-normal-*-*-480-*-*-*-*-iso8859-1 normally + resolves to /usr/share/fonts/X11/100dpi/lutBS24-ISO8859-1.pcf.gz. + + -*-lucidatypewriter-* is from the 'xfonts-100dpi' package in + Debian/Ubuntu. It's usually (54.46% of systems), but not always, + installed whenever an X.org server (57.96% of systems) is. It might + be a good idea for this and xfonts-75dpi to be recommended + dependencies of XScreenSaver in Debian, but that's neither here nor + there. https://qa.debian.org/popcon.php?package=xorg + https://qa.debian.org/popcon.php?package=xfonts-100dpi + + 2. It normally resolves to the PCF font... but not always. + + Fontconfig has /etc/fonts/conf.d/ (it's /opt/local/etc/fonts/conf.d/ + with MacPorts) containing symlinks to configuration files. And both + Debian and Ubuntu normally has a 70-no-bitmaps.conf, installed as part + of the 'fontconfig-config' package. And the 70-no-bitmaps.conf + symlink... disables bitmap fonts. + + Without bitmap fonts, I get DejaVu Sans. + + 3. There's another symlink of interest here: + /etc/fonts/conf.d/10-scale-bitmap-fonts.conf. This adds space to the + right of glyphs of bitmap fonts when the requested size of the font is + larger than the actual bitmap font. Ubuntu and MacPorts has this one. + + This specifically is causing text to have excessive character spacing. + + (jwz asks: WHY WOULD ANYONE EVER WANT THIS BEHAVIOR?) + + 4. Notice that I'm only talking about Debian and Ubuntu. Other distros + will probably have different symlinks in /etc/fonts/conf.d/. So yes, + this can be an issue on Linux as well as MacOS. + */ + { + XGlyphInfo extents; + int rbearing, width; + float ratio; + float min = 0.8; + + XftTextExtentsUtf8 (s->dpy, se->xftfont, (FcChar8 *) "M", 1, &extents); + rbearing = extents.width - extents.x; + width = extents.xOff; + ratio = rbearing / (float) width; # ifdef DEBUG - if (! se->font) - { - if (s->debug_p) - fprintf (stderr, "%s: unable to load font %s\n", - progname, pattern); - return False; - } + if (s->debug_p) + fprintf (stderr, "%s: M ratio %.2f (%d %d): %s\n", progname, + ratio, rbearing, width, pattern); +# endif + + if (ratio < min && !s->font_override) + { +# ifdef DEBUG + if (s->debug_p) + fprintf (stderr, "%s: skipping font with broken metrics: %s\n", + progname, pattern); +# endif + return False; + } + } + - if (se->font->min_bounds.width == se->font->max_bounds.width && - !s->font_override) +# ifdef DEBUG + if (! se->xftfont) { - /* This is to weed out - "-urw-nimbus mono l-medium-o-normal--*-*-*-*-p-*-iso8859-1" and - "-urw-courier-medium-r-normal--*-*-*-*-p-*-iso8859-1". - We asked for only proportional fonts, but this fixed-width font - shows up anyway -- but it has goofy metrics (see below) so it - looks terrible anyway. - */ if (s->debug_p) - fprintf (stderr, - "%s: skipping bogus monospace non-charcell font: %s\n", + fprintf (stderr, "%s: unable to load font %s\n", progname, pattern); return False; } @@ -354,7 +442,6 @@ pick_font_1 (state *s, sentence *se) # endif /* DEBUG */ se->font_name = strdup (pattern); - XSetFont (s->dpy, se->fg_gc, se->font->fid); return True; } @@ -366,10 +453,11 @@ static void pick_font (state *s, sentence *se) { int i; - for (i = 0; i < 20; i++) + for (i = 0; i < 50; i++) if (pick_font_1 (s, se)) return; - fprintf (stderr, "%s: too many font-loading failures: giving up!\n", progname); + fprintf (stderr, "%s: too many font-loading failures: giving up!\n", + progname); exit (1); } @@ -463,58 +551,67 @@ get_word_text (state *s) } +/* Returns a 1-bit pixmap of the same size as the drawable, + with a 0 wherever the drawable is black. + */ +static Pixmap +make_mask (Screen *screen, Visual *visual, Drawable drawable) +{ + Display *dpy = DisplayOfScreen (screen); + unsigned long black = BlackPixelOfScreen (screen); + Window r; + int x, y; + unsigned int w, h, bw, d; + XImage *out, *in; + Pixmap mask; + GC gc; + + XGetGeometry (dpy, drawable, &r, &x, &y, &w, &h, &bw, &d); + in = XGetImage (dpy, drawable, 0, 0, w, h, ~0L, ZPixmap); + out = XCreateImage (dpy, visual, 1, XYPixmap, 0, 0, w, h, 8, 0); + out->data = (char *) malloc (h * out->bytes_per_line); + for (y = 0; y < h; y++) + for (x = 0; x < w; x++) + XPutPixel (out, x, y, (black != XGetPixel (in, x, y))); + mask = XCreatePixmap (dpy, drawable, w, h, 1L); + gc = XCreateGC (dpy, mask, 0, 0); + XPutImage (dpy, mask, gc, out, 0, 0, 0, 0, w, h); + XFreeGC (dpy, gc); + free (in->data); + free (out->data); + in->data = out->data = 0; + XDestroyImage (in); + XDestroyImage (out); + return mask; +} + + /* Gets some random text, and creates a "word" object from it. */ static word * new_word (state *s, sentence *se, const char *txt, Bool alloc_p) { word *w; - XCharStruct overall; - int dir, ascent, descent; + XGlyphInfo extents; int bw = s->border_width; - int slack; if (!txt) return 0; w = (word *) calloc (1, sizeof(*w)); - XTextExtents (se->font, txt, strlen(txt), &dir, &ascent, &descent, &overall); - - /* Leave a little more slack. Not entirely clear on what's going on here, - but maybe it's fonts with goofy metrics. */ - slack = (overall.ascent + overall.descent) * 0.25; - if (slack < bw*2) slack = bw*2; - overall.lbearing -= slack; - overall.rbearing += slack; - overall.ascent += slack; - overall.descent += slack; - - w->width = overall.rbearing - overall.lbearing; - w->height = overall.ascent + overall.descent; - w->ascent = overall.ascent + bw; - w->lbearing = overall.lbearing - bw; - w->rbearing = overall.width + bw; - -# if 0 - /* The metrics on some fonts are strange -- e.g., - "-urw-nimbus mono l-medium-o-normal--*-*-*-*-p-*-iso8859-1" and - "-urw-courier-medium-r-normal--*-*-*-*-p-*-iso8859-1" both have - an rbearing so wide that it looks like there are two spaces after - each letter. If this character says it has an rbearing that is to - the right of its ink, ignore that. - - #### Of course, this hack only helps when we're in `move_chars_p' mode - and drawing a char at a time -- when we draw the whole word at once, - XDrawString believes the bogus metrics and spaces the font out - crazily anyway. - - Sigh, this causes some text to mis-render in, e.g., - "-adobe-utopia-medium-i-normal--114-*-100-100-p-*-iso8859-1" - (in "ux", we need the rbearing on "r" or we get too much overlap.) - */ - if (w->rbearing > w->width) - w->rbearing = w->width; -# endif /* 0 */ + XftTextExtentsUtf8 (s->dpy, se->xftfont, (FcChar8 *) txt, strlen(txt), + &extents); + + w->lbearing = -extents.x; + w->rbearing = extents.width - extents.x; + w->ascent = extents.y; + w->descent = extents.height - extents.y; + w->width = extents.xOff; + + w->lbearing -= bw; + w->rbearing += bw; + w->descent += bw; + w->ascent += bw; if (s->mode == SCROLL && !alloc_p) abort(); @@ -522,118 +619,84 @@ new_word (state *s, sentence *se, const char *txt, Bool alloc_p) { int i, j; XGCValues gcv; - GC gc0, gc1; + GC gc_fg, gc_bg, gc_black; + XftDraw *xftdraw; + int width = w->rbearing - w->lbearing; + int height = w->ascent + w->descent; + + if (width <= 0) width = 1; + if (height <= 0) height = 1; + + w->pixmap = XCreatePixmap (s->dpy, s->b, width, height, s->xgwa.depth); + xftdraw = XftDrawCreate (s->dpy, w->pixmap, s->xgwa.visual, + s->xgwa.colormap); - if (w->width <= 0) w->width = 1; - if (w->height <= 0) w->height = 1; + gcv.foreground = se->xftcolor_fg.pixel; + gc_fg = XCreateGC (s->dpy, w->pixmap, GCForeground, &gcv); - w->pixmap = XCreatePixmap (s->dpy, s->b, w->width, w->height, 1L); - w->mask = XCreatePixmap (s->dpy, s->b, w->width, w->height, 1L); + gcv.foreground = se->xftcolor_bg.pixel; + gc_bg = XCreateGC (s->dpy, w->pixmap, GCForeground, &gcv); - gcv.font = se->font->fid; - gcv.foreground = 0L; - gcv.background = 1L; - gc0 = XCreateGC (s->dpy, w->pixmap, GCFont|GCForeground|GCBackground, - &gcv); - gcv.foreground = 1L; - gcv.background = 0L; - gc1 = XCreateGC (s->dpy, w->pixmap, GCFont|GCForeground|GCBackground, - &gcv); + gcv.foreground = BlackPixelOfScreen (s->xgwa.screen); + gc_black = XCreateGC (s->dpy, w->pixmap, GCForeground, &gcv); - XFillRectangle (s->dpy, w->mask, gc0, 0, 0, w->width, w->height); - XFillRectangle (s->dpy, w->pixmap, gc0, 0, 0, w->width, w->height); + XFillRectangle (s->dpy, w->pixmap, gc_black, 0, 0, width, height); # ifdef DEBUG if (s->debug_p) { /* bounding box (behind the characters) */ - XDrawRectangle (s->dpy, w->pixmap, (se->dark_p ? gc0 : gc1), - 0, 0, w->width-1, w->height-1); - XDrawRectangle (s->dpy, w->mask, gc1, - 0, 0, w->width-1, w->height-1); - } - - if (s->debug_p > 1) - { - /* bounding box (behind *each* character) */ - char *ss; - int x = 0; - for (ss = txt; *ss; ss++) - { - XTextExtents (se->font, ss, 1, &dir, &ascent, &descent, &overall); - XDrawRectangle (s->dpy, w->pixmap, (se->dark_p ? gc0 : gc1), - x, w->ascent - overall.ascent, - overall.width, - overall.ascent + overall.descent); - XDrawRectangle (s->dpy, w->mask, gc1, - x, w->ascent - overall.ascent, - overall.width, - overall.ascent + overall.descent); - - XDrawRectangle (s->dpy, w->pixmap, (se->dark_p ? gc0 : gc1), - x - overall.lbearing, w->ascent - overall.ascent, - overall.rbearing, - overall.ascent + overall.descent); - XDrawRectangle (s->dpy, w->mask, gc1, - x - overall.lbearing, w->ascent - overall.ascent, - overall.rbearing, - overall.ascent + overall.descent); - - - x += overall.width; - } + XDrawRectangle (s->dpy, w->pixmap, (se->dark_p ? gc_bg : gc_fg), + 0, 0, width-1, height-1); } # endif /* DEBUG */ - /* Draw foreground text */ - XDrawString (s->dpy, w->pixmap, gc1, -w->lbearing, w->ascent, - txt, strlen(txt)); - - /* Cheesy hack to draw a border */ - /* (I should be able to do this in i*2 time instead of i*i time, - but I can't get it right, so fuck it.) */ - XSetFunction (s->dpy, gc1, GXor); + /* Draw background text for border */ for (i = -bw; i <= bw; i++) for (j = -bw; j <= bw; j++) - XCopyArea (s->dpy, w->pixmap, w->mask, gc1, - 0, 0, w->width, w->height, - i, j); + XftDrawStringUtf8 (xftdraw, &se->xftcolor_bg, se->xftfont, + -w->lbearing + i, w->ascent + j, + (FcChar8 *) txt, strlen(txt)); + + /* Draw foreground text */ + XftDrawStringUtf8 (xftdraw, &se->xftcolor_fg, se->xftfont, + -w->lbearing, w->ascent, + (FcChar8 *) txt, strlen(txt)); # ifdef DEBUG if (s->debug_p) { - XSetFunction (s->dpy, gc1, GXcopy); - if (w->ascent != w->height) + if (w->ascent != height) { /* baseline (on top of the characters) */ - XDrawLine (s->dpy, w->pixmap, (se->dark_p ? gc0 : gc1), - 0, w->ascent, w->width-1, w->ascent); - XDrawLine (s->dpy, w->mask, gc1, - 0, w->ascent, w->width-1, w->ascent); + XDrawLine (s->dpy, w->pixmap, (se->dark_p ? gc_bg : gc_fg), + 0, w->ascent, width-1, w->ascent); } - if (w->lbearing != 0) + if (w->lbearing < 0) { /* left edge of charcell */ - XDrawLine (s->dpy, w->pixmap, (se->dark_p ? gc0 : gc1), - w->lbearing, 0, w->lbearing, w->height-1); - XDrawLine (s->dpy, w->mask, gc1, - w->lbearing, 0, w->lbearing, w->height-1); + XDrawLine (s->dpy, w->pixmap, (se->dark_p ? gc_bg : gc_fg), + -w->lbearing, 0, + -w->lbearing, height-1); } if (w->rbearing != w->width) { /* right edge of charcell */ - XDrawLine (s->dpy, w->pixmap, (se->dark_p ? gc0 : gc1), - w->rbearing, 0, w->rbearing, w->height-1); - XDrawLine (s->dpy, w->mask, gc1, - w->rbearing, 0, w->rbearing, w->height-1); + XDrawLine (s->dpy, w->pixmap, (se->dark_p ? gc_bg : gc_fg), + w->width - w->lbearing, 0, + w->width - w->lbearing, height-1); } } # endif /* DEBUG */ - XFreeGC (s->dpy, gc0); - XFreeGC (s->dpy, gc1); + w->mask = make_mask (s->xgwa.screen, s->xgwa.visual, w->pixmap); + + XftDrawDestroy (xftdraw); + XFreeGC (s->dpy, gc_fg); + XFreeGC (s->dpy, gc_bg); + XFreeGC (s->dpy, gc_black); } w->text = strdup (txt); @@ -668,16 +731,21 @@ free_sentence (state *s, sentence *se) int i; for (i = 0; i < se->nwords; i++) free_word (s, se->words[i]); - if (se->words) free (se->words); - - if (se->fg.flags) - XFreeColors (s->dpy, s->xgwa.colormap, &se->fg.pixel, 1, 0); - if (se->bg.flags) - XFreeColors (s->dpy, s->xgwa.colormap, &se->bg.pixel, 1, 0); + if (se->words) + free (se->words); + if (se->font_name) + free (se->font_name); + if (se->fg_gc) + XFreeGC (s->dpy, se->fg_gc); - if (se->font_name) free (se->font_name); - if (se->font) XFreeFont (s->dpy, se->font); - if (se->fg_gc) XFreeGC (s->dpy, se->fg_gc); + if (se->xftfont) + { + XftFontClose (s->dpy, se->xftfont); + XftColorFree (s->dpy, s->xgwa.visual, s->xgwa.colormap, + &se->xftcolor_fg); + XftColorFree (s->dpy, s->xgwa.visual, s->xgwa.colormap, + &se->xftcolor_bg); + } free (se); } @@ -705,53 +773,56 @@ split_words (state *s, sentence *se) word **words2; int nwords2 = 0; int i, j; + + char ***word_chars = (char ***) malloc (se->nwords * sizeof(*word_chars)); for (i = 0; i < se->nwords; i++) - nwords2 += strlen (se->words[i]->text); + { + int L; + word *ow = se->words[i]; + word_chars[i] = utf8_split (ow->text, &L); + nwords2 += L; + } words2 = (word **) calloc (nwords2, sizeof(*words2)); for (i = 0, j = 0; i < se->nwords; i++) { - word *ow = se->words[i]; - int L = strlen (ow->text); + char **chars = word_chars[i]; + word *parent = se->words[i]; + int x = parent->x; + int y = parent->y; + int sx = parent->start_x; + int sy = parent->start_y; + int tx = parent->target_x; + int ty = parent->target_y; int k; - int x = ow->x; - int y = ow->y; - int sx = ow->start_x; - int sy = ow->start_y; - int tx = ow->target_x; - int ty = ow->target_y; - - for (k = 0; k < L; k++) + for (k = 0; chars[k]; k++) { - char t2[2]; - word *w2; - int xoff, yoff; - - t2[0] = ow->text[k]; - t2[1] = 0; - w2 = new_word (s, se, t2, True); + char *t2 = chars[k]; + word *w2 = new_word (s, se, t2, True); words2[j++] = w2; - xoff = (w2->lbearing - ow->lbearing); - yoff = (ow->ascent - w2->ascent); + w2->x = x; + w2->y = y; + w2->start_x = sx; + w2->start_y = sy; + w2->target_x = tx; + w2->target_y = ty; - w2->x = x + xoff; - w2->y = y + yoff; - w2->start_x = sx + xoff; - w2->start_y = sy + yoff; - w2->target_x = tx + xoff; - w2->target_y = ty + yoff; - - x += w2->rbearing; - sx += w2->rbearing; - tx += w2->rbearing; + x += w2->width; + sx += w2->width; + tx += w2->width; } - free_word (s, ow); - se->words[i] = 0; + /* This is not invariant when kerning is involved! */ + /* if (x != parent->x + parent->width) abort(); */ + + free (chars); /* but we retain its contents */ + free_word (s, parent); } + if (j != nwords2) abort(); + free (word_chars); free (se->words); se->words = words2; @@ -766,7 +837,7 @@ static void scatter_sentence (state *s, sentence *se) { int i = 0; - int off = 100; + int off = s->border_width * 4 + 2; int flock_p = ((random() % 4) == 0); int mode = (flock_p ? (random() % 12) : 0); @@ -776,69 +847,32 @@ scatter_sentence (state *s, sentence *se) word *w = se->words[i]; int x, y; int r = (flock_p ? mode : (random() % 4)); - switch (r) - { - /* random positions on the edges */ - - case 0: - x = -off - w->width; - y = random() % s->xgwa.height; - break; - case 1: - x = off + s->xgwa.width; - y = random() % s->xgwa.height; - break; - case 2: - x = random() % s->xgwa.width; - y = -off - w->height; - break; - case 3: - x = random() % s->xgwa.width; - y = off + s->xgwa.height; - break; - - /* straight towards the edges */ - - case 4: - x = -off - w->width; - y = w->target_y; - break; - case 5: - x = off + s->xgwa.width; - y = w->target_y; - break; - case 6: - x = w->target_x; - y = -off - w->height; - break; - case 7: - x = w->target_x; - y = off + s->xgwa.height; - break; - - /* corners */ - - case 8: - x = -off - w->width; - y = -off - w->height; - break; - case 9: - x = -off - w->width; - y = off + s->xgwa.height; - break; - case 10: - x = off + s->xgwa.width; - y = off + s->xgwa.height; - break; - case 11: - x = off + s->xgwa.width; - y = -off - w->height; - break; - - default: - abort(); - break; - } + int left = -(off + w->rbearing); + int top = -(off + w->descent); + int right = off - w->lbearing + s->xgwa.width; + int bottom = off + w->ascent + s->xgwa.height; + + switch (r) { + /* random positions on the edges */ + case 0: x = left; y = random() % s->xgwa.height; break; + case 1: x = right; y = random() % s->xgwa.height; break; + case 2: x = random() % s->xgwa.width; y = top; break; + case 3: x = random() % s->xgwa.width; y = bottom; break; + + /* straight towards the edges */ + case 4: x = left; y = w->target_y; break; + case 5: x = right; y = w->target_y; break; + case 6: x = w->target_x; y = top; break; + case 7: x = w->target_x; y = bottom; break; + + /* corners */ + case 8: x = left; y = top; break; + case 9: x = left; y = bottom; break; + case 10: x = right; y = top; break; + case 11: x = right; y = bottom; break; + + default: abort(); break; + } if (se->anim_state == IN) { @@ -898,7 +932,7 @@ aim_sentence (state *s, sentence *se) } nticks = ((se->words[0]->start_x - se->words[0]->target_x) - / (s->speed * 10)); + / (s->speed * 7)); nticks *= (frand(0.9) + frand(0.9) + frand(0.9)); if (nticks < 2) @@ -954,49 +988,36 @@ sort_sentences (state *s) static void recolor (state *s, sentence *se) { - if (se->fg.flags) - XFreeColors (s->dpy, s->xgwa.colormap, &se->fg.pixel, 1, 0); - if (se->bg.flags) - XFreeColors (s->dpy, s->xgwa.colormap, &se->bg.pixel, 1, 0); - - se->fg.flags = DoRed|DoGreen|DoBlue; - se->bg.flags = DoRed|DoGreen|DoBlue; - - switch (random() % 2) + XRenderColor fg, bg; + + fg.red = (random() % 0x5555) + 0xAAAA; + fg.green = (random() % 0x5555) + 0xAAAA; + fg.blue = (random() % 0x5555) + 0xAAAA; + fg.alpha = 0xFFFF; + bg.red = (random() % 0x5555); + bg.green = (random() % 0x5555); + bg.blue = (random() % 0x5555); + bg.alpha = 0xFFFF; + se->dark_p = False; + + if (random() & 1) { - case 0: /* bright fg, dim bg */ - se->fg.red = (random() % 0x8888) + 0x8888; - se->fg.green = (random() % 0x8888) + 0x8888; - se->fg.blue = (random() % 0x8888) + 0x8888; - se->bg.red = (random() % 0x5555); - se->bg.green = (random() % 0x5555); - se->bg.blue = (random() % 0x5555); - break; - - case 1: /* bright bg, dim fg */ - se->fg.red = (random() % 0x4444); - se->fg.green = (random() % 0x4444); - se->fg.blue = (random() % 0x4444); - se->bg.red = (random() % 0x4444) + 0xCCCC; - se->bg.green = (random() % 0x4444) + 0xCCCC; - se->bg.blue = (random() % 0x4444) + 0xCCCC; - break; - - default: - abort(); - break; + XRenderColor swap = fg; fg = bg; bg = swap; + se->dark_p = True; } -# ifdef DEBUG - if (s->debug_p) - se->dark_p = (se->fg.red*2 + se->fg.green*3 + se->fg.blue < - se->bg.red*2 + se->bg.green*3 + se->bg.blue); -# endif /* DEBUG */ + if (se->xftfont) + { + XftColorFree (s->dpy, s->xgwa.visual, s->xgwa.colormap, + &se->xftcolor_fg); + XftColorFree (s->dpy, s->xgwa.visual, s->xgwa.colormap, + &se->xftcolor_bg); + } - if (XAllocColor (s->dpy, s->xgwa.colormap, &se->fg)) - XSetForeground (s->dpy, se->fg_gc, se->fg.pixel); - if (XAllocColor (s->dpy, s->xgwa.colormap, &se->bg)) - XSetBackground (s->dpy, se->fg_gc, se->bg.pixel); + XftColorAllocValue (s->dpy, s->xgwa.visual, s->xgwa.colormap, &fg, + &se->xftcolor_fg); + XftColorAllocValue (s->dpy, s->xgwa.visual, s->xgwa.colormap, &bg, + &se->xftcolor_bg); } @@ -1082,12 +1103,18 @@ populate_sentence (state *s, sentence *se) break; /* If EOF after some words, end of sentence. */ } - if (! se->font) /* Got a word: need a font now */ + if (! se->xftfont) /* Got a word: need a font now */ { + XGlyphInfo extents; pick_font (s, se); - if (y < se->font->ascent) - y += se->font->ascent; - space = XTextWidth (se->font, " ", 1); + if (y < se->xftfont->ascent) + y += se->xftfont->ascent; + + /* Measure the space character to figure out how much room to + leave between words (since we don't actually render that.) */ + XftTextExtentsUtf8 (s->dpy, se->xftfont, (FcChar8 *) " ", 1, + &extents); + space = extents.xOff; } w = new_word (s, se, txt, !se->move_chars_p); @@ -1120,14 +1147,14 @@ populate_sentence (state *s, sentence *se) line_start = se->nwords; x = left; - y += se->font->ascent; + y += se->xftfont->ascent + se->xftfont->descent; /* If we're close to the bottom of the screen, stop, and unread the current word. (But not if this is the first word, otherwise we might just get stuck on it.) */ if (se->nwords > 0 && - y + se->font->ascent > s->xgwa.height) + y + se->xftfont->ascent + se->xftfont->descent > s->xgwa.height) { unread_word (s, w); /* done = True; */ @@ -1135,17 +1162,17 @@ populate_sentence (state *s, sentence *se) } } - w->target_x = x + w->lbearing; - w->target_y = y - w->ascent; + w->target_x = x; + w->target_y = y; - x += w->rbearing + space; + x += w->width + space; se->width = x; if (se->nwords >= (array_size - 1)) { array_size += 100; - se->words = (word **) realloc (se->words, - array_size * sizeof(*se->words)); + se->words = (word **) + realloc (se->words, array_size * sizeof(*se->words)); if (!se->words) { fprintf (stderr, "%s: out of memory (%d words)\n", @@ -1191,22 +1218,26 @@ populate_sentence (state *s, sentence *se) /* Render a single word object to the screen. */ static void -draw_word (state *s, sentence *se, word *w) +draw_word (state *s, sentence *se, word *word) { - if (! w->pixmap) return; - - if (w->x + w->width < 0 || - w->y + w->height < 0 || - w->x > s->xgwa.width || - w->y > s->xgwa.height) + int x, y, w, h; + if (! word->pixmap) return; + + x = word->x + word->lbearing; + y = word->y - word->ascent; + w = word->rbearing - word->lbearing; + h = word->ascent + word->descent; + + if (x + w < 0 || + y + h < 0 || + x > s->xgwa.width || + y > s->xgwa.height) return; - XSetClipMask (s->dpy, se->fg_gc, w->mask); - XSetClipOrigin (s->dpy, se->fg_gc, w->x, w->y); - XCopyPlane (s->dpy, w->pixmap, s->b, se->fg_gc, - 0, 0, w->width, w->height, - w->x, w->y, - 1L); + XSetClipMask (s->dpy, se->fg_gc, word->mask); + XSetClipOrigin (s->dpy, se->fg_gc, x, y); + XCopyArea (s->dpy, word->pixmap, s->b, se->fg_gc, + 0, 0, w, h, x, y); } @@ -1371,7 +1402,8 @@ draw_sentence (state *s, sentence *se) } -#ifdef DEBUG +#ifdef DEBUG /* All of this stuff is for -debug-metrics mode. */ + static Pixmap scale_ximage (Screen *screen, Window window, XImage *img, int scale, @@ -1456,13 +1488,18 @@ fontglide_draw_metrics (state *s) { unsigned int margin = (s->debug_metrics_antialiasing_p ? 2 : 0); - char txt[2], txt2[80]; + char txt[2], utxt[3], txt2[80]; + XChar2b *txt3 = 0; const char *fn = (s->font_override ? s->font_override : "fixed"); XFontStruct *font = XLoadQueryFont (s->dpy, fn); XFontStruct *font2 = XLoadQueryFont (s->dpy, "fixed"); - XCharStruct c, overall; + XCharStruct c, overall, fake_c; int dir, ascent, descent; int x, y; + XGlyphInfo extents; + XftFont *xftfont; + XftColor xftcolor; + XftDraw *xftdraw; int sc = s->debug_scale; GC gc; unsigned long red = 0xFFFF0000; /* so shoot me */ @@ -1470,7 +1507,7 @@ fontglide_draw_metrics (state *s) unsigned long blue = 0xFF6666FF; unsigned long yellow = 0xFFFFFF00; unsigned long cyan = 0xFF004040; - int i; + int i, j; Drawable dest = s->b ? s->b : s->window; if (sc < 1) sc = 1; @@ -1478,6 +1515,29 @@ fontglide_draw_metrics (state *s) txt[0] = s->debug_metrics_p; txt[1] = 0; + /* Convert Latin1 to UTF-8. */ + if ((unsigned char) txt[0] >= 0xC0) + { + utxt[0] = 0xC3; + utxt[1] = ((unsigned char) txt[0]) & 0xBF; + utxt[2] = 0; + } + else if ((unsigned char) txt[0] >= 0xA0) + { + utxt[0] = 0xC2; + utxt[1] = txt[0]; + utxt[2] = 0; + } + else + { + utxt[0] = txt[0]; + utxt[1] = 0; + } + + txt3 = utf8_to_XChar2b (utxt, 0); + + if (! font) font = font2; + gc = XCreateGC (s->dpy, dest, 0, 0); XSetFont (s->dpy, gc, font->fid); @@ -1485,6 +1545,21 @@ fontglide_draw_metrics (state *s) jwxyz_XSetAntiAliasing (s->dpy, gc, False); # endif + xftfont = XftFontOpenXlfd (s->dpy, screen_number(s->xgwa.screen), fn); + if (! xftfont) + xftfont = XftFontOpenXlfd (s->dpy, screen_number(s->xgwa.screen), "fixed"); + if (! xftfont) + abort(); + + + xftdraw = XftDrawCreate (s->dpy, dest, s->xgwa.visual, + s->xgwa.colormap); + XftColorAllocName (s->dpy, s->xgwa.visual, s->xgwa.colormap, "white", + &xftcolor); + XftTextExtentsUtf8 (s->dpy, xftfont, (FcChar8 *) utxt, strlen(utxt), + &extents); + + XTextExtents (font, txt, strlen(txt), &dir, &ascent, &descent, &overall); c = (s->debug_metrics_p >= font->min_char_or_byte2 @@ -1494,21 +1569,54 @@ fontglide_draw_metrics (state *s) XSetForeground (s->dpy, gc, BlackPixelOfScreen (s->xgwa.screen)); XFillRectangle (s->dpy, dest, gc, 0, 0, s->xgwa.width, s->xgwa.height); - x = (s->xgwa.width - overall.width) / 2; - y = (s->xgwa.height - (2 * sc * (ascent + descent))) / 2; - - for (i = 0; i < 2; i++) + for (j = 0; j < 2; j++) { + Bool xft_p = (j != 0); + int ww = s->xgwa.width / 2 - 20; + x = (ww - overall.width) / 2; + y = (s->xgwa.height - (2 * sc * (ascent + descent))) / 2; + + for (i = 0; i < 2; i++) { - XCharStruct cc = (i == 0 ? c : overall); - int x1 = s->xgwa.width * 0.15; - int x2 = s->xgwa.width * 0.85; - int x3 = s->xgwa.width; + int xoff = (j == 0 ? 0 : ww + 20); + XCharStruct cc; + int x1 = xoff + ww * 0.18; + int x2 = xoff + ww * 0.82; + int x3 = xoff + ww; + int pixw, pixh; + Pixmap p; + + memset (&fake_c, 0, sizeof(fake_c)); + + if (!xft_p && i == 0) + cc = c; + else if (!xft_p && i == 1) + cc = overall; + else if (xft_p && i == 0) + { + /* Measure the glyph in the Xft way */ + XGlyphInfo extents; + XftTextExtentsUtf8 (s->dpy, xftfont, (FcChar8 *) utxt, strlen(utxt), + &extents); + fake_c.lbearing = -extents.x; + fake_c.rbearing = extents.width - extents.x; + fake_c.ascent = extents.y; + fake_c.descent = extents.height - extents.y; + fake_c.width = extents.xOff; + cc = fake_c; + } + else if (xft_p) + { + /* Measure the glyph in the 16-bit way */ + int dir, ascent, descent; + XTextExtents16 (font, txt3, 1, &dir, &ascent, &descent, &fake_c); + cc = fake_c; + } - int pixw = margin * 2 + cc.rbearing - cc.lbearing; - int pixh = margin * 2 + cc.ascent + cc.descent; - Pixmap p = (pixw > 0 && pixh > 0 - ? XCreatePixmap (s->dpy, dest, pixw, pixh, s->xgwa.depth) - : 0); + pixw = margin * 2 + cc.rbearing - cc.lbearing; + pixh = margin * 2 + cc.ascent + cc.descent; + p = (pixw > 0 && pixh > 0 + ? XCreatePixmap (s->dpy, dest, pixw, pixh, s->xgwa.depth) + : 0); if (p) { @@ -1525,10 +1633,28 @@ fontglide_draw_metrics (state *s) # ifdef HAVE_COCOA jwxyz_XSetAntiAliasing (s->dpy, gc2, s->debug_metrics_antialiasing_p); # endif - XDrawString (s->dpy, p, gc2, - -cc.lbearing + margin, - cc.ascent + margin, - txt, strlen(txt)); + + if (xft_p && i == 0) + { + XftDraw *xftdraw2 = XftDrawCreate (s->dpy, p, s->xgwa.visual, + s->xgwa.colormap); + XftDrawStringUtf8 (xftdraw2, &xftcolor, xftfont, + -cc.lbearing + margin, + cc.ascent + margin, + (FcChar8 *) utxt, strlen(utxt)); + XftDrawDestroy (xftdraw2); + } + else if (xft_p) + XDrawString16 (s->dpy, p, gc2, + -cc.lbearing + margin, + cc.ascent + margin, + txt3, 1); + else + XDrawString (s->dpy, p, gc2, + -cc.lbearing + margin, + cc.ascent + margin, + txt, strlen(txt)); + { unsigned x2, y2; XImage *img = XGetImage (s->dpy, p, 0, 0, pixw, pixh, @@ -1557,7 +1683,9 @@ fontglide_draw_metrics (state *s) if (ink & 0xFFFFFF) { XSetFont (s->dpy, gc, font2->fid); - XDrawString (s->dpy, dest, gc, 10, 40, "Ink escape!", 11); + XDrawString (s->dpy, dest, gc, + xoff + 10, 40, + "Ink escape!", 11); } } @@ -1574,7 +1702,8 @@ fontglide_draw_metrics (state *s) img, margin, margin + h - 1, 0, w)) { XSetFont (s->dpy, gc, font2->fid); - XDrawString (s->dpy, dest, gc, 10, 60, + XDrawString (s->dpy, dest, gc, + xoff + 10, 60, "Wasted space: ", 14); } } @@ -1629,7 +1758,7 @@ fontglide_draw_metrics (state *s) XCopyArea (s->dpy, p2, dest, gc, 0, 0, sc*pixw, sc*pixh, - x + sc * (cc.lbearing - margin), + xoff + x + sc * (cc.lbearing - margin), y - sc * (cc.ascent + margin)); XFreePixmap (s->dpy, p); XFreePixmap (s->dpy, p2); @@ -1643,23 +1772,41 @@ fontglide_draw_metrics (state *s) # ifdef HAVE_COCOA jwxyz_XSetAntiAliasing (s->dpy, gc, s->debug_metrics_antialiasing_p); # endif - sprintf (txt2, "%c [XX%cXX] [%c%c%c%c]", - s->debug_metrics_p, s->debug_metrics_p, - s->debug_metrics_p, s->debug_metrics_p, - s->debug_metrics_p, s->debug_metrics_p); - XDrawString (s->dpy, dest, gc, - x + (sc*cc.rbearing/2) - cc.rbearing/2, ascent + 10, - txt2, strlen(txt2)); + sprintf (txt2, "%s [XX%sXX] [%s%s%s%s]", + (xft_p ? utxt : txt), + (xft_p ? utxt : txt), + (xft_p ? utxt : txt), + (xft_p ? utxt : txt), + (xft_p ? utxt : txt), + (xft_p ? utxt : txt)); + + if (xft_p) + XftDrawStringUtf8 (xftdraw, &xftcolor, xftfont, + xoff + x/2 + (sc*cc.rbearing/2) - cc.rbearing/2, + ascent + 10, + (FcChar8 *) txt2, strlen(txt2)); + else + XDrawString (s->dpy, dest, gc, + xoff + x/2 + (sc*cc.rbearing/2) - cc.rbearing/2, + ascent + 10, + txt2, strlen(txt2)); # ifdef HAVE_COCOA jwxyz_XSetAntiAliasing (s->dpy, gc, False); # endif XSetFont (s->dpy, gc, font2->fid); - sprintf (txt2, "%c %3d 0%03o 0x%02x%s", - s->debug_metrics_p, s->debug_metrics_p, - s->debug_metrics_p, s->debug_metrics_p, - (txt[0] < font->min_char_or_byte2 ? " *" : "")); + if (xft_p && utxt[1]) + sprintf (txt2, "0%03o 0%03o %02x %02x", + (unsigned char) utxt[0], (unsigned char) utxt[1], + (unsigned char) utxt[0], (unsigned char) utxt[1]); + else if (xft_p) + txt2[0] = 0; + else + sprintf (txt2, "%c %3d 0%03o 0x%02x%s", + s->debug_metrics_p, s->debug_metrics_p, + s->debug_metrics_p, s->debug_metrics_p, + (txt[0] < font->min_char_or_byte2 ? " *" : "")); XDrawString (s->dpy, dest, gc, - 10, 20, + xoff + 10, 20, txt2, strlen(txt2)); } @@ -1667,23 +1814,32 @@ fontglide_draw_metrics (state *s) jwxyz_XSetAntiAliasing (s->dpy, gc, True); # endif - XSetFont (s->dpy, gc, font2->fid); - - XSetForeground (s->dpy, gc, red); + { + const char *ss = (j == 0 + ? (i == 0 ? "char" : "overall") + : (i == 0 ? "utf8" : "16 bit")); + XSetFont (s->dpy, gc, font2->fid); - sprintf (txt2, "%s ascent %d", - (i == 0 ? "char" : "overall"), - ascent); - XDrawString (s->dpy, dest, gc, 10, y - sc*ascent - 2, - txt2, strlen(txt2)); - XDrawLine (s->dpy, dest, gc, 0, y - sc*ascent, x3, y - sc*ascent); + XSetForeground (s->dpy, gc, red); - sprintf (txt2, "%s descent %d", - (i == 0 ? "char" : "overall"), - descent); - XDrawString (s->dpy, dest, gc, 10, y + sc*descent - 2, - txt2, strlen(txt2)); - XDrawLine (s->dpy, dest, gc, 0, y + sc*descent, x3, y + sc*descent); + sprintf (txt2, "%s ascent %d", ss, ascent); + XDrawString (s->dpy, dest, gc, + xoff + 10, + y - sc*ascent - 2, + txt2, strlen(txt2)); + XDrawLine (s->dpy, dest, gc, + xoff, y - sc*ascent, + x3, y - sc*ascent); + + sprintf (txt2, "%s descent %d", ss, descent); + XDrawString (s->dpy, dest, gc, + xoff + 10, + y + sc*descent - 2, + txt2, strlen(txt2)); + XDrawLine (s->dpy, dest, gc, + xoff, y + sc*descent, + x3, y + sc*descent); + } /* ascent, descent, baseline */ @@ -1692,21 +1848,26 @@ fontglide_draw_metrics (state *s) sprintf (txt2, "ascent %d", cc.ascent); if (cc.ascent != 0) - XDrawString (s->dpy, dest, gc, x1, y - sc*cc.ascent - 2, + XDrawString (s->dpy, dest, gc, + x1, y - sc*cc.ascent - 2, txt2, strlen(txt2)); XDrawLine (s->dpy, dest, gc, - x1, y - sc*cc.ascent, x2, y - sc*cc.ascent); + x1, y - sc*cc.ascent, + x2, y - sc*cc.ascent); sprintf (txt2, "descent %d", cc.descent); if (cc.descent != 0) - XDrawString (s->dpy, dest, gc, x1, y + sc*cc.descent - 2, + XDrawString (s->dpy, dest, gc, + x1, y + sc*cc.descent - 2, txt2, strlen(txt2)); XDrawLine (s->dpy, dest, gc, - x1, y + sc*cc.descent, x2, y + sc*cc.descent); + x1, y + sc*cc.descent, + x2, y + sc*cc.descent); XSetForeground (s->dpy, gc, yellow); strcpy (txt2, "baseline"); - XDrawString (s->dpy, dest, gc, x1, y - 2, + XDrawString (s->dpy, dest, gc, + x1, y - 2, txt2, strlen(txt2)); XDrawLine (s->dpy, dest, gc, x1, y, x2, y); @@ -1717,20 +1878,21 @@ fontglide_draw_metrics (state *s) strcpy (txt2, "origin"); XDrawString (s->dpy, dest, gc, - x + 2, y + sc*(descent + 10), + xoff + x + 2, + y + sc*(descent + 10), txt2, strlen(txt2)); XDrawLine (s->dpy, dest, gc, - x, y - sc*(ascent - 10), - x, y + sc*(descent + 10)); + xoff + x, y - sc*(ascent - 10), + xoff + x, y + sc*(descent + 10)); sprintf (txt2, "width %d", cc.width); XDrawString (s->dpy, dest, gc, - x + sc*cc.width + 2, + xoff + x + sc*cc.width + 2, y + sc*(descent + 10) + 10, txt2, strlen(txt2)); XDrawLine (s->dpy, dest, gc, - x + sc*cc.width, y - sc*(ascent - 10), - x + sc*cc.width, y + sc*(descent + 10)); + xoff + x + sc*cc.width, y - sc*(ascent - 10), + xoff + x + sc*cc.width, y + sc*(descent + 10)); /* lbearing, rbearing */ @@ -1738,23 +1900,26 @@ fontglide_draw_metrics (state *s) XSetForeground (s->dpy, gc, green); sprintf (txt2, "lbearing %d", cc.lbearing); - XDrawString (s->dpy, dest, gc, x + sc*cc.lbearing + 2, + XDrawString (s->dpy, dest, gc, + xoff + x + sc*cc.lbearing + 2, y + sc * descent + 30, txt2, strlen(txt2)); XDrawLine (s->dpy, dest, gc, - x + sc*cc.lbearing, y - sc*ascent, - x + sc*cc.lbearing, y + sc*descent + 20); + xoff + x + sc*cc.lbearing, y - sc*ascent, + xoff + x + sc*cc.lbearing, y + sc*descent + 20); sprintf (txt2, "rbearing %d", cc.rbearing); - XDrawString (s->dpy, dest, gc, x + sc*cc.rbearing + 2, + XDrawString (s->dpy, dest, gc, + xoff + x + sc*cc.rbearing + 2, y + sc * descent + 40, txt2, strlen(txt2)); XDrawLine (s->dpy, dest, gc, - x + sc*cc.rbearing, y - sc*ascent, - x + sc*cc.rbearing, y + sc*descent + 40); + xoff + x + sc*cc.rbearing, y - sc*ascent, + xoff + x + sc*cc.rbearing, y + sc*descent + 40); y += sc * (ascent + descent) * 2; } + } if (dest != s->window) XCopyArea (s->dpy, dest, s->window, s->bg_gc, @@ -1762,7 +1927,14 @@ fontglide_draw_metrics (state *s) XFreeGC (s->dpy, gc); XFreeFont (s->dpy, font); - XFreeFont (s->dpy, font2); + if (font != font2) + XFreeFont (s->dpy, font2); + + XftFontClose (s->dpy, xftfont); + XftColorFree (s->dpy, s->xgwa.visual, s->xgwa.colormap, &xftcolor); + XftDrawDestroy (xftdraw); + free (txt3); + return s->frame_delay; } @@ -2020,7 +2192,13 @@ static const char *fontglide_defaults [] = { "*usePty: false", "*mode: random", ".font: (default)", + + /* I'm not entirely clear on whether the charset of an XLFD has any + meaning when Xft is being used. */ "*fontCharset: iso8859-1", +/*"*fontCharset: iso10646-1", */ +/*"*fontCharset: *-*",*/ + "*fontBorderWidth: 2", "*speed: 1.0", "*linger: 1.0",