-#include "../kernel/openbox.h"
-#include "font.h"
+/* -*- indent-tabs-mode: nil; tab-width: 4; c-basic-offset: 4; -*-
+
+ font.c for the Openbox window manager
+ Copyright (c) 2006 Mikael Magnusson
+ Copyright (c) 2003 Ben Jansens
+ Copyright (c) 2003 Derek Foreman
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
-#include "../kernel/gettext.h"
-#define _(str) gettext(str)
+ See the COPYING file for a copy of the GNU General Public License.
+*/
+
+#include "font.h"
+#include "color.h"
+#include "mask.h"
+#include "theme.h"
+#include "geom.h"
+#include "gettext.h"
#include <X11/Xft/Xft.h>
#include <glib.h>
-#include "../kernel/geom.h"
+#include <string.h>
+#include <stdlib.h>
+#ifdef USE_PANGO
+#include <locale.h>
+#endif
-void font_startup(void)
+#define ELIPSES "..."
+#define ELIPSES_LENGTH(font) \
+ (font->elipses_length + (font->shadow ? font->offset : 0))
+
+#define OB_SHADOW "shadow"
+#define OB_SHADOW_OFFSET "shadowoffset"
+#define OB_SHADOW_ALPHA "shadowtint"
+
+FcObjectType objs[] = {
+ { OB_SHADOW, FcTypeBool },
+ { OB_SHADOW_OFFSET, FcTypeInteger },
+ { OB_SHADOW_ALPHA, FcTypeInteger }
+};
+
+#ifdef USE_PANGO
+static PangoContext *context;
+#endif
+static gboolean started = FALSE;
+
+static void font_startup(void)
{
-#ifdef DEBUG
- int version;
-#endif /* DEBUG */
if (!XftInit(0)) {
- g_warning(_("Couldn't initialize Xft.\n"));
- exit(3);
+ g_warning(_("Couldn't initialize Xft."));
+ exit(EXIT_FAILURE);
}
-#ifdef DEBUG
- version = XftGetVersion();
- g_message("Using Xft %d.%d.%d (Built against %d.%d.%d).",
- version / 10000 % 100, version / 100 % 100, version % 100,
- XFT_MAJOR, XFT_MINOR, XFT_REVISION);
-#endif
+
+#ifdef USE_PANGO
+ g_type_init();
+ /* these will never be freed, but we will need
+ * them until we shut down anyway */
+ context = pango_xft_get_context(RrDisplay(NULL), RrScreen(NULL));
+#endif /* USE_PANGO */
+ /* Here we are teaching xft about the shadow, shadowoffset & shadowtint */
+ FcNameRegisterObjectTypes(objs, (sizeof(objs) / sizeof(objs[0])));
}
-static void measure_height(ObFont *f)
+static void measure_font(RrFont *f)
{
+ /* xOff, yOff is the normal spacing to the next glyph. */
XGlyphInfo info;
- char *str;
- /* XXX add some extended UTF8 characters in here? */
- str = "12345678900-qwertyuiopasdfghjklzxcvbnm"
- "!@#$%^&*()_+QWERTYUIOPASDFGHJKLZXCVBNM"
- "`~[]\\;',./{}|:\"<>?";
+ /* measure an elipses */
+ XftTextExtentsUtf8(RrDisplay(f->inst), f->xftfont,
+ (FcChar8*)ELIPSES, strlen(ELIPSES), &info);
+ f->elipses_length = (signed) info.xOff;
+}
+
+static RrFont *openfont(const RrInstance *inst, gchar *fontstring)
+{
+ /* This function is called for each font in the theme file. */
+ /* It returns a pointer to a RrFont struct after filling it. */
+ RrFont *out;
+ FcPattern *pat, *match;
+ XftFont *font;
+ FcResult res;
+ gint tint;
+#ifdef USE_PANGO
+ guchar *tmp_string = NULL;
+ gint tmp_int;
+#endif /* USE_PANGO */
+
+ if (!(pat = XftNameParse(fontstring)))
+ return NULL;
+
+ match = XftFontMatch(RrDisplay(inst), RrScreen(inst), pat, &res);
+ FcPatternDestroy(pat);
+ if (!match)
+ return NULL;
+
+ out = g_new(RrFont, 1);
+ out->inst = inst;
+#ifdef USE_PANGO
+ out->pango_font_description = pango_font_description_new();
+
+ if (FcPatternGetString(match, "family", 0, &tmp_string) !=
+ FcResultTypeMismatch) {
+ pango_font_description_set_family(out->pango_font_description,
+ (gchar *)tmp_string);
+ tmp_string = NULL;
+ }
+ if (FcPatternGetString(match, "style", 0, &tmp_string) !=
+ FcResultTypeMismatch) {
+ /* Bold ? */
+ if (!strcasecmp("bold", (gchar *)tmp_string)) {
+ pango_font_description_set_weight(out->pango_font_description,
+ PANGO_WEIGHT_BOLD);
+ }
+ /* Italic ? */
+ else if (!strcasecmp("italic", (gchar *)tmp_string)) {
+ pango_font_description_set_style(out->pango_font_description,
+ PANGO_STYLE_ITALIC);
+ }
+ tmp_string = NULL;
+ }
+
+ if (FcPatternGetInteger(match, "pixelsize", 0, &tmp_int) !=
+ FcResultTypeMismatch) {
+ pango_font_description_set_absolute_size(out->pango_font_description,
+ tmp_int*PANGO_SCALE);
+ }
+
+ /* based on gtkmain.c gtk_get_default_language() */
+ gchar *locale, *p;
+ locale = g_strdup(setlocale(LC_CTYPE, NULL));
+ if ((p = strchr(locale, '.')))
+ *p = '\0';
+ if ((p = strchr(locale, '@')))
+ *p = '\0';
+ PangoFontMetrics *metrics =
+ pango_context_get_metrics(context, out->pango_font_description,
+ pango_language_from_string(locale));
+ out->pango_ascent = pango_font_metrics_get_ascent(metrics);
+ out->pango_descent = pango_font_metrics_get_descent(metrics);
+ g_free(locale);
+ pango_font_metrics_unref(metrics);
+#endif /* USE_PANGO */
+
+ if (FcPatternGetBool(match, OB_SHADOW, 0, &out->shadow) != FcResultMatch)
+ out->shadow = FALSE;
+
+ if (FcPatternGetInteger(match, OB_SHADOW_OFFSET, 0, &out->offset) !=
+ FcResultMatch)
+ out->offset = 1;
- XftTextExtentsUtf8(ob_display, f->xftfont,
- (FcChar8*)str, strlen(str), &info);
- f->height = (signed) info.height;
+ if (FcPatternGetInteger(match, OB_SHADOW_ALPHA, 0, &tint) != FcResultMatch)
+ tint = 25;
+ if (tint > 100) tint = 100;
+ else if (tint < -100) tint = -100;
+ out->tint = tint;
+
+ font = XftFontOpenPattern(RrDisplay(inst), match);
+ if (!font) {
+ FcPatternDestroy(match);
+ g_free(out);
+ return NULL;
+ } else
+ out->xftfont = font;
+
+#ifdef USE_PANGO
+ /* FcPatternDestroy(match); */
+#endif /* USE_PANGO */
+ measure_font(out);
+
+ return out;
}
-ObFont *font_open(char *fontstring)
+RrFont *RrFontOpen(const RrInstance *inst, gchar *fontstring)
{
- ObFont *out;
- XftFont *xf;
-
- if ((xf = XftFontOpenName(ob_display, ob_screen, fontstring))) {
- out = g_new(ObFont, 1);
- out->xftfont = xf;
- measure_height(out);
- return out;
+ RrFont *out;
+
+ if (!started) {
+ font_startup();
+ started = TRUE;
}
+
+ if ((out = openfont(inst, fontstring)))
+ return out;
g_warning(_("Unable to load font: %s\n"), fontstring);
g_warning(_("Trying fallback font: %s\n"), "sans");
- if ((xf = XftFontOpenName(ob_display, ob_screen, "sans"))) {
- out = g_new(ObFont, 1);
- out->xftfont = xf;
- measure_height(out);
+ if ((out = openfont(inst, "sans")))
return out;
- }
g_warning(_("Unable to load font: %s\n"), "sans");
- g_warning(_("Aborting!.\n"));
- exit(3); /* can't continue without a font */
+ return NULL;
}
-void font_close(ObFont *f)
+void RrFontClose(RrFont *f)
{
if (f) {
- XftFontClose(ob_display, f->xftfont);
+#ifdef USE_PANGO
+ pango_font_description_free(f->pango_font_description);
+#endif
+ XftFontClose(RrDisplay(f->inst), f->xftfont);
g_free(f);
}
}
-int font_measure_string(ObFont *f, char *str, int shadow, int offset)
+static void font_measure_full(const RrFont *f, const gchar *str,
+ gint *x, gint *y)
{
+#ifdef USE_PANGO
+ PangoLayout *pl;
+ PangoRectangle rect;
+ pl = pango_layout_new (context);
+ pango_layout_set_text(pl, str, -1);
+ pango_layout_set_font_description(pl, f->pango_font_description);
+ pango_layout_set_single_paragraph_mode(pl, TRUE);
+ pango_layout_get_pixel_extents(pl, NULL, &rect);
+ *x = rect.width + (f->shadow ? ABS(f->offset) : 0);
+ *y = rect.height + (f->shadow ? ABS(f->offset) : 0);
+ g_object_unref(pl);
+
+#else
XGlyphInfo info;
- XftTextExtentsUtf8(ob_display, f->xftfont,
- (FcChar8*)str, strlen(str), &info);
+ XftTextExtentsUtf8(RrDisplay(f->inst), f->xftfont,
+ (const FcChar8*)str, strlen(str), &info);
- return (signed) info.xOff + (shadow ? offset : 0);
+ *x = (signed) info.xOff + (f->shadow ? ABS(f->offset) : 0);
+ *y = info.height + (f->shadow ? ABS(f->offset) : 0);
+#endif /* USE_PANGO */
}
-int font_height(ObFont *f, int shadow, int offset)
+RrSize *RrFontMeasureString(const RrFont *f, const gchar *str)
{
- return f->height + (shadow ? offset : 0);
+ RrSize *size;
+ size = g_new(RrSize, 1);
+ font_measure_full (f, str, &size->width, &size->height);
+ return size;
+}
+
+gint RrFontHeight(const RrFont *f)
+{
+#ifdef USE_PANGO
+ return (f->pango_ascent
+ + f->pango_descent
+ ) / PANGO_SCALE +
+ (f->shadow ? f->offset : 0);
+#else
+ return f->xftfont->ascent + f->xftfont->descent +
+ (f->shadow ? f->offset : 0);
+#endif
}
-int font_max_char_width(ObFont *f)
+gint RrFontMaxCharWidth(const RrFont *f)
{
return (signed) f->xftfont->max_advance_width;
}
-void font_draw(XftDraw *d, TextureText *t, Rect *position)
+#ifdef USE_PANGO
+static inline int font_calculate_baseline(RrFont *f, gint height)
{
- int x,y,w,h;
+/* For my own reference:
+ * _________
+ * ^space/2 ^height ^baseline
+ * v_________|_ |
+ * | ^ascent | _ _
+ * | | | | |_ _____ _| |_ _ _
+ * | | | | _/ -_) \ / _| || |
+ * | v_________v \__\___/_\_\\__|\_, |
+ * | ^descent |__/
+ * __________|_v
+ * ^space/2 |
+ * V_________v
+ */
+ int asc = f->pango_ascent;
+ int ascdesc = asc + f->pango_descent;
+ int space = height * PANGO_SCALE - ascdesc;
+ int baseline = space / 2 + asc;
+ return baseline / PANGO_SCALE;
+}
+#endif
+
+void RrFontDraw(XftDraw *d, RrTextureText *t, RrRect *area)
+{
+ gint x,y,w,h;
XftColor c;
- char *text;
- int m;
+ GString *text;
+ gint mw;
+#ifndef USE_PANGO
+ gint mh;
size_t l;
+ gboolean shortened = FALSE;
+#else
+ PangoLayout *pl;
+ PangoRectangle rect;
- y = position->y;
- w = position->width;
- h = position->height;
+ pl = pango_layout_new (context);
+#endif /* USE_PANGO */
- /* accomidate for areas bigger/smaller than Xft thinks the font is tall */
- y -= (2 * (t->font->xftfont->ascent + t->font->xftfont->descent) -
- (t->font->height + h) - 1) / 2;
+ /* center vertically
+ * for xft we pass the top edge of the text for positioning... */
+#ifndef USE_PANGO
+ y = area->y +
+ (area->height - RrFontHeight(t->font)) / 2;
+#else
+ /* but for pango we pass the baseline, since different fonts have
+ * different top edges. It looks stupid when the baseline of "normal"
+ * text jumps up and down when a "strange" character is just added
+ * to the end of the text */
+ y = area->y +
+ font_calculate_baseline(t->font, area->height);
+#endif
+ /* the +2 and -4 leave a small blank edge on the sides */
+ x = area->x + 2;
+ w = area->width - 4;
+ h = area->height;
- text = g_strdup(t->string);
- l = strlen(text);
- m = font_measure_string(t->font, text, t->shadow, t->offset);
- while (l && m > position->width) {
- text[--l] = '\0';
- m = font_measure_string(t->font, text, t->shadow, t->offset);
+ text = g_string_new(t->string);
+#ifndef USE_PANGO
+ l = g_utf8_strlen(text->str, -1);
+ font_measure_full(t->font, text->str, &mw, &mh);
+ while (l && mw > area->width) {
+ shortened = TRUE;
+ /* remove a character from the middle */
+ text = g_string_erase(text, l-- / 2, 1);
+ /* if the elipses are too large, don't show them at all */
+ if (ELIPSES_LENGTH(t->font) > area->width)
+ shortened = FALSE;
+ font_measure_full(t->font, text->str, &mw, &mh);
+ mw += ELIPSES_LENGTH(t->font);
+ }
+ if (shortened) {
+ text = g_string_insert(text, (l + 1) / 2, ELIPSES);
+ l += 3;
}
if (!l) return;
+ l = strlen(text->str); /* number of bytes */
+
+#else
+ pango_layout_set_text(pl, text->str, -1);
+ pango_layout_set_font_description(pl, t->font->pango_font_description);
+ pango_layout_set_single_paragraph_mode(pl, TRUE);
+ pango_layout_set_width(pl, w * PANGO_SCALE);
+ pango_layout_set_ellipsize(pl, PANGO_ELLIPSIZE_MIDDLE);
+ /* This doesn't work with layout_line() of course */
+/* pango_layout_set_alignment(pl, (PangoAlignment)(t->justify)); */
+ pango_layout_get_pixel_extents(pl, NULL, &rect);
+ mw = rect.width;
+
+#endif /* USE_PANGO */
+
switch (t->justify) {
- case Justify_Left:
- x = position->x;
+ case RR_JUSTIFY_LEFT:
break;
- case Justify_Right:
- x = position->x + (w - m);
+ case RR_JUSTIFY_RIGHT:
+ x += (w - mw);
break;
- case Justify_Center:
- x = position->x + (w - m) / 2;
+ case RR_JUSTIFY_CENTER:
+ x += (w - mw) / 2;
break;
}
- if (t->shadow) {
- if (t->tint >= 0) {
+ if (t->font->shadow) {
+ if (t->font->tint >= 0) {
c.color.red = 0;
c.color.green = 0;
c.color.blue = 0;
- c.color.alpha = 0xffff * t->tint / 100; /* transparent shadow */
- c.pixel = BlackPixel(ob_display, ob_screen);
+ c.color.alpha = 0xffff * t->font->tint / 100;
+ c.pixel = BlackPixel(RrDisplay(t->font->inst),
+ RrScreen(t->font->inst));
} else {
- c.color.red = 0xffff * -t->tint / 100;
- c.color.green = 0xffff * -t->tint / 100;
- c.color.blue = 0xffff * -t->tint / 100;
- c.color.alpha = 0xffff * -t->tint / 100; /* transparent shadow */
- c.pixel = WhitePixel(ob_display, ob_screen);
- }
- XftDrawStringUtf8(d, &c, t->font->xftfont, x + t->offset,
- t->font->xftfont->ascent + y + t->offset,
- (FcChar8*)text, l);
- }
+ c.color.red = 0xffff;
+ c.color.green = 0xffff;
+ c.color.blue = 0xffff;
+ c.color.alpha = 0xffff * -t->font->tint / 100;
+ c.pixel = WhitePixel(RrDisplay(t->font->inst),
+ RrScreen(t->font->inst));
+ }
+#ifndef USE_PANGO
+ XftDrawStringUtf8(d, &c, t->font->xftfont, x + t->font->offset,
+ t->font->xftfont->ascent + y + t->font->offset,
+ (FcChar8*)text->str, l);
+#else /* USE_PANGO */
+ /* see below... */
+ pango_xft_render_layout_line(d, &c, pango_layout_get_line(pl, 0),
+ (x + t->font->offset) * PANGO_SCALE,
+ (y + t->font->offset) * PANGO_SCALE);
+#endif /* USE_PANGO */
+ }
c.color.red = t->color->r | t->color->r << 8;
c.color.green = t->color->g | t->color->g << 8;
c.color.blue = t->color->b | t->color->b << 8;
c.color.alpha = 0xff | 0xff << 8; /* fully opaque text */
c.pixel = t->color->pixel;
-
+
+#ifndef USE_PANGO
XftDrawStringUtf8(d, &c, t->font->xftfont, x,
t->font->xftfont->ascent + y,
- (FcChar8*)text, l);
+ (FcChar8*)text->str, l);
+#else /* USE_PANGO */
+ /* layout_line() bases y on the baseline, while layout() bases y on the
+ * top of the ink layout. We want the baseline to always be in the same
+ * place, thusly, we use layout_line()
+ * The actual line doesn't need to be freed (per the pango docs) */
+ pango_xft_render_layout_line(d, &c, pango_layout_get_line(pl, 0),
+ x * PANGO_SCALE, y * PANGO_SCALE);
+ g_object_unref(pl);
+#endif
+
+ g_string_free(text, TRUE);
return;
}
projects / chaz / openbox / blobdiff