+/* -*- 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.
+
+ 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 "kernel/geom.h"
-#include "kernel/gettext.h"
-#define _(str) gettext(str)
+#include "geom.h"
+#include "instance.h"
+#include "gettext.h"
-#include <X11/Xft/Xft.h>
#include <glib.h>
#include <string.h>
-
-#define ELIPSES "..."
-#define ELIPSES_LENGTH(font) \
- (font->elipses_length + (font->shadow ? font->offset : 0))
+#include <stdlib.h>
+#include <locale.h>
#define OB_SHADOW "shadow"
#define OB_SHADOW_OFFSET "shadowoffset"
static void font_startup(void)
{
if (!XftInit(0)) {
- g_warning(_("Couldn't initialize Xft.\n"));
+ g_warning(_("Couldn't initialize Xft."));
exit(EXIT_FAILURE);
}
+
+ /* Here we are teaching xft about the shadow, shadowoffset & shadowtint */
FcNameRegisterObjectTypes(objs, (sizeof(objs) / sizeof(objs[0])));
}
-static void measure_font(RrFont *f)
+static void measure_font(const RrInstance *inst, RrFont *f)
{
- XGlyphInfo info;
-
- /* measure an elipses */
- XftTextExtentsUtf8(RrDisplay(f->inst), f->xftfont,
- (FcChar8*)ELIPSES, strlen(ELIPSES), &info);
- f->elipses_length = (signed) info.xOff;
+ PangoFontMetrics *metrics;
+ gchar *locale, *p;
+
+ /* get the default language from the locale
+ (based on gtk_get_default_language in gtkmain.c) */
+ locale = g_strdup(setlocale(LC_CTYPE, NULL));
+ if ((p = strchr(locale, '.'))) *p = '\0'; /* strip off the . */
+ if ((p = strchr(locale, '@'))) *p = '\0'; /* strip off the @ */
+
+ /* measure the ascent and descent */
+ metrics = pango_context_get_metrics(inst->pango, f->font_desc,
+ pango_language_from_string(locale));
+ f->ascent = pango_font_metrics_get_ascent(metrics);
+ f->descent = pango_font_metrics_get_descent(metrics);
+ pango_font_metrics_unref(metrics);
+
+ g_free(locale);
}
-static RrFont *openfont(const RrInstance *inst, char *fontstring)
+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;
+ FcPattern *pat;
gint tint;
+ gchar *sval;
+ gint ival;
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;
+ out->font_desc = pango_font_description_new();
+ out->layout = pango_layout_new(inst->pango);
+
+ /* get the data from the parsed xft string */
+
+ /* get the family */
+ if (FcPatternGetString(pat, "family", 0,
+ (FcChar8**)&sval) == FcResultMatch)
+ pango_font_description_set_family(out->font_desc, sval);
+
+ /* get the weight */
+ if (FcPatternGetInteger(pat, "weight", 0, &ival) == FcResultMatch) {
+ if (ival == FC_WEIGHT_LIGHT)
+ pango_font_description_set_weight(out->font_desc,
+ PANGO_WEIGHT_LIGHT);
+ else if (ival == FC_WEIGHT_DEMIBOLD)
+ pango_font_description_set_weight(out->font_desc,
+ PANGO_WEIGHT_SEMIBOLD);
+ else if (ival == FC_WEIGHT_BOLD)
+ pango_font_description_set_weight(out->font_desc,
+ PANGO_WEIGHT_BOLD);
+ else if (ival == FC_WEIGHT_BLACK)
+ pango_font_description_set_weight(out->font_desc,
+ PANGO_WEIGHT_ULTRABOLD);
+ }
- if (FcPatternGetBool(match, OB_SHADOW, 0, &out->shadow) != FcResultMatch)
+ /* get the style/slant */
+ if (FcPatternGetInteger(pat, "slant", 0, &ival) == FcResultMatch) {
+ if (ival == FC_SLANT_ITALIC)
+ pango_font_description_set_style(out->font_desc,
+ PANGO_STYLE_ITALIC);
+ else if (ival == FC_SLANT_OBLIQUE)
+ pango_font_description_set_style(out->font_desc,
+ PANGO_STYLE_OBLIQUE);
+ }
+
+ /* get the size */
+ if (FcPatternGetInteger(pat, "size", 0, &ival) == FcResultMatch)
+ pango_font_description_set_size(out->font_desc, ival * PANGO_SCALE);
+ else if (FcPatternGetInteger(pat, "pixelsize", 0, &ival) == FcResultMatch)
+ pango_font_description_set_absolute_size(out->font_desc,
+ ival * PANGO_SCALE);
+ else
+ pango_font_description_set_size(out->font_desc, 8 * PANGO_SCALE);
+
+ if (FcPatternGetBool(pat, OB_SHADOW, 0, &out->shadow) != FcResultMatch)
out->shadow = FALSE;
- g_message("shadow %d", out->shadow);
- if (FcPatternGetInteger(match, OB_SHADOW_OFFSET, 0, &out->offset) !=
+ if (FcPatternGetInteger(pat, OB_SHADOW_OFFSET, 0, &out->offset) !=
FcResultMatch)
out->offset = 1;
- if (FcPatternGetInteger(match, OB_SHADOW_ALPHA, 0, &tint) != FcResultMatch)
+ if (FcPatternGetInteger(pat, 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) {
- g_free(out);
- return NULL;
- } else
- out->xftfont = font;
+ /* setup the layout */
+ pango_layout_set_font_description(out->layout, out->font_desc);
+ pango_layout_set_single_paragraph_mode(out->layout, TRUE);
+ pango_layout_set_ellipsize(out->layout, PANGO_ELLIPSIZE_MIDDLE);
- measure_font(out);
+ /* get the ascent and descent */
+ measure_font(inst, out);
return out;
}
-RrFont *RrFontOpen(const RrInstance *inst, char *fontstring)
+RrFont *RrFontOpen(const RrInstance *inst, gchar *fontstring)
{
RrFont *out;
void RrFontClose(RrFont *f)
{
if (f) {
- XftFontClose(RrDisplay(f->inst), f->xftfont);
+ g_object_unref(f->layout);
+ pango_font_description_free(f->font_desc);
g_free(f);
}
}
static void font_measure_full(const RrFont *f, const gchar *str,
gint *x, gint *y)
{
- XGlyphInfo info;
+ PangoRectangle rect;
- XftTextExtentsUtf8(RrDisplay(f->inst), f->xftfont,
- (const FcChar8*)str, strlen(str), &info);
-
- *x = (signed) info.xOff + (f->shadow ? ABS(f->offset) : 0);
- *y = info.height + (f->shadow ? ABS(f->offset) : 0);
+ pango_layout_set_text(f->layout, str, -1);
+ pango_layout_set_width(f->layout, -1);
+ pango_layout_get_pixel_extents(f->layout, NULL, &rect);
+ *x = rect.width + (f->shadow ? ABS(f->offset) : 0);
+ *y = rect.height + (f->shadow ? ABS(f->offset) : 0);
}
-int RrFontMeasureString(const RrFont *f, const gchar *str)
+RrSize *RrFontMeasureString(const RrFont *f, const gchar *str)
{
- gint x, y;
- font_measure_full (f, str, &x, &y);
- return x;
+ RrSize *size;
+ size = g_new(RrSize, 1);
+ font_measure_full(f, str, &size->width, &size->height);
+ return size;
}
-int RrFontHeight(const RrFont *f)
+gint RrFontHeight(const RrFont *f)
{
- return f->xftfont->ascent + f->xftfont->descent +
+ return (f->ascent + f->descent) / PANGO_SCALE +
(f->shadow ? f->offset : 0);
}
-int RrFontMaxCharWidth(const RrFont *f)
+static inline int font_calculate_baseline(RrFont *f, gint height)
{
- return (signed) f->xftfont->max_advance_width;
+/* For my own reference:
+ * _________
+ * ^space/2 ^height ^baseline
+ * v_________|_ |
+ * | ^ascent | _ _
+ * | | | | |_ _____ _| |_ _ _
+ * | | | | _/ -_) \ / _| || |
+ * | v_________v \__\___/_\_\\__|\_, |
+ * | ^descent |__/
+ * __________|_v
+ * ^space/2 |
+ * V_________v
+ */
+ return (((height * PANGO_SCALE) /* height of the space in pango units */
+ - (f->ascent + f->descent)) /* minus space taken up by text */
+ / 2 /* divided by two -> half of the empty space (this is the top
+ of the text) */
+ + f->ascent) /* now move down to the baseline */
+ / PANGO_SCALE; /* back to pixels */
}
-void RrFontDraw(XftDraw *d, RrTextureText *t, Rect *area)
+void RrFontDraw(XftDraw *d, RrTextureText *t, RrRect *area)
{
gint x,y,w,h;
XftColor c;
- GString *text;
- gint mw, em, mh;
- size_t l;
- gboolean shortened = FALSE;
+ gint mw;
+ PangoRectangle rect;
- /* center vertically */
+ /* center the text vertically
+ We do this centering based on the 'baseline' since different fonts have
+ different top edges. It looks bad when the whole string is moved when 1
+ character from a non-default language is included in the string */
y = area->y +
- (area->height - RrFontHeight(t->font)) / 2;
+ font_calculate_baseline(t->font, area->height);
+
/* 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_string_new(t->string);
- 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);
- em = ELIPSES_LENGTH(t->font);
- /* if the elipses are too large, don't show them at all */
- if (em > area->width)
- shortened = FALSE;
- font_measure_full(t->font, text->str, &mw, &mh);
- mw += em;
- }
- if (shortened) {
- text = g_string_insert(text, (l + 1) / 2, ELIPSES);
- l += 3;
- }
- if (!l) return;
+ pango_layout_set_text(t->font->layout, t->string, -1);
+ pango_layout_set_width(t->font->layout, w * PANGO_SCALE);
+
+ pango_layout_get_pixel_extents(t->font->layout, NULL, &rect);
+ mw = rect.width;
+ /* pango_layout_set_alignment doesn't work with
+ pango_xft_render_layout_line */
switch (t->justify) {
case RR_JUSTIFY_LEFT:
break;
break;
}
- l = strlen(text->str); /* number of bytes */
-
if (t->font->shadow) {
if (t->font->tint >= 0) {
c.color.red = 0;
c.color.alpha = 0xffff * -t->font->tint / 100;
c.pixel = WhitePixel(RrDisplay(t->font->inst),
RrScreen(t->font->inst));
- }
- XftDrawStringUtf8(d, &c, t->font->xftfont, x + t->font->offset,
- t->font->xftfont->ascent + y + t->font->offset,
- (FcChar8*)text->str, l);
- }
+ }
+ /* see below... */
+ pango_xft_render_layout_line
+ (d, &c, pango_layout_get_line(t->font->layout, 0),
+ (x + t->font->offset) * PANGO_SCALE,
+ (y + t->font->offset) * PANGO_SCALE);
+ }
+
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;
- XftDrawStringUtf8(d, &c, t->font->xftfont, x,
- t->font->xftfont->ascent + y,
- (FcChar8*)text->str, l);
- return;
+ /* layout_line() uses y to specify the baseline
+ The line doesn't need to be freed, it's a part of the layout */
+ pango_xft_render_layout_line
+ (d, &c, pango_layout_get_line(t->font->layout, 0),
+ x * PANGO_SCALE, y * PANGO_SCALE);
}
projects / chaz / openbox / blobdiff