-#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 "../src/gettext.h"
-#define _(str) gettext(str)
+ See the COPYING file for a copy of the GNU General Public License.
+*/
-font_open(const std::string &fontstring,
- bool shadow, unsigned char offset, unsigned char tint)
+#include "font.h"
+#include "color.h"
+#include "mask.h"
+#include "theme.h"
+#include "geom.h"
+#include "instance.h"
+#include "gettext.h"
+
+#include <glib.h>
+#include <string.h>
+#include <stdlib.h>
+#include <locale.h>
+
+static void measure_font(const RrInstance *inst, RrFont *f)
{
- assert(screen_num >= 0);
- assert(tint <= CHAR_MAX);
-
- if (!_xft_init) {
- if (!XftInit(0)) {
- printf(_("Couldn't initialize Xft.\n\n"));
- ::exit(3);
- }
-#ifdef DEBUG
- int version = XftGetVersion();
- printf("Using Xft %d.%d.%d (Built against %d.%d.%d).\n",
- version / 10000 % 100, version / 100 % 100, version % 100,
- XFT_MAJOR, XFT_MINOR, XFT_REVISION);
-#endif
- _xft_init = true;
- }
-
- if ((_xftfont = XftFontOpenName(ob_display, _screen_num,
- fontstring)))
- return;
-
- printf(_("Unable to load font: %s\n"), _fontstring.c_str());
- printf(_("Trying fallback font: %s\n"), "fixed");
-
- if ((_xftfont = XftFontOpenName(ob_display, _screen_num,
- "fixed")))
- return;
-
- printf(_("Unable to load font: %s\n"), "fixed");
- printf(_("Aborting!.\n"));
-
- exit(3); // can't continue without a font
+ 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);
}
+RrFont *RrFontOpen(const RrInstance *inst, gchar *name, gint size,
+ RrFontWeight weight, RrFontSlant slant)
+{
+ RrFont *out;
+ PangoWeight pweight;
+ PangoStyle pstyle;
+
+ out = g_new(RrFont, 1);
+ out->inst = inst;
+ out->ref = 1;
+ out->font_desc = pango_font_description_new();
+ out->layout = pango_layout_new(inst->pango);
+
+ switch (weight) {
+ case RR_FONTWEIGHT_LIGHT: pweight = PANGO_WEIGHT_LIGHT; break;
+ case RR_FONTWEIGHT_NORMAL: pweight = PANGO_WEIGHT_NORMAL; break;
+ case RR_FONTWEIGHT_SEMIBOLD: pweight = PANGO_WEIGHT_SEMIBOLD; break;
+ case RR_FONTWEIGHT_BOLD: pweight = PANGO_WEIGHT_BOLD; break;
+ case RR_FONTWEIGHT_ULTRABOLD: pweight = PANGO_WEIGHT_ULTRABOLD; break;
+ default: g_assert_not_reached();
+ }
+
+ switch (slant) {
+ case RR_FONTSLANT_NORMAL: pstyle = PANGO_STYLE_NORMAL; break;
+ case RR_FONTSLANT_ITALIC: pstyle = PANGO_STYLE_ITALIC; break;
+ case RR_FONTSLANT_OBLIQUE: pstyle = PANGO_STYLE_OBLIQUE; break;
+ default: g_assert_not_reached();
+ }
+
+ /* setup the font */
+ pango_font_description_set_family(out->font_desc, name);
+ pango_font_description_set_weight(out->font_desc, pweight);
+ pango_font_description_set_style(out->font_desc, pstyle);
+ pango_font_description_set_size(out->font_desc, size * PANGO_SCALE);
+
+ /* 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);
+
+ /* get the ascent and descent */
+ measure_font(inst, out);
+
+ return out;
+}
-destroy_fonts(void)
+RrFont *RrFontOpenDefault(const RrInstance *inst)
{
- if (_xftfont)
- XftFontClose(ob_display, _xftfont);
+ return RrFontOpen(inst, RrDefaultFontFamily, RrDefaultFontSize,
+ RrDefaultFontWeight, RrDefaultFontSlant);
}
+void RrFontRef(RrFont *f)
+{
+ ++f->ref;
+}
-int font_measure_string(const char *)
+void RrFontClose(RrFont *f)
{
- XGlyphInfo info;
+ if (f) {
+ if (--f->ref < 1) {
+ g_object_unref(f->layout);
+ pango_font_description_free(f->font_desc);
+ g_free(f);
+ }
+ }
+}
- if (string.utf8())
- XftTextExtentsUtf8(**display, _xftfont,
- (FcChar8*)string.c_str(), string.bytes(), &info);
- else
- XftTextExtents8(ob_display, _xftfont,
- (FcChar8*)string.c_str(), string.bytes(), &info);
+static void font_measure_full(const RrFont *f, const gchar *str,
+ gint *x, gint *y, gint shadow_x, gint shadow_y)
+{
+ PangoRectangle rect;
- return (signed) info.xOff + (_shadow ? _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 + ABS(shadow_x);
+ *y = rect.height + ABS(shadow_y);
}
+RrSize *RrFontMeasureString(const RrFont *f, const gchar *str,
+ gint shadow_x, gint shadow_y)
+{
+ RrSize *size;
+ size = g_new(RrSize, 1);
+ font_measure_full(f, str, &size->width, &size->height, shadow_x, shadow_y);
+ return size;
+}
-int font_height(void)
+gint RrFontHeight(const RrFont *f, gint shadow_y)
{
- return (signed) _xftfont->height + (_shadow ? _offset : 0);
+ return (f->ascent + f->descent) / PANGO_SCALE + ABS(shadow_y);
}
+static inline int font_calculate_baseline(RrFont *f, gint height)
+{
+/* 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 */
+}
-int font_max_char_width(void)
+void RrFontDraw(XftDraw *d, RrTextureText *t, RrRect *area)
{
- return (signed) _xftfont->max_advance_width;
+ gint x,y,w,h;
+ XftColor c;
+ gint mw;
+ PangoRectangle rect;
+
+ /* 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 +
+ 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;
+
+ 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;
+ case RR_JUSTIFY_RIGHT:
+ x += (w - mw);
+ break;
+ case RR_JUSTIFY_CENTER:
+ x += (w - mw) / 2;
+ break;
+ }
+
+ if (t->shadow_offset_x || t->shadow_offset_y) {
+ c.color.red = t->shadow_color->r | t->shadow_color->r << 8;
+ c.color.green = t->shadow_color->g | t->shadow_color->g << 8;
+ c.color.blue = t->shadow_color->b | t->shadow_color->b << 8;
+ c.color.alpha = 0xffff * t->shadow_alpha / 255;
+ c.pixel = t->shadow_color->pixel;
+ /* see below... */
+ pango_xft_render_layout_line
+ (d, &c, pango_layout_get_line(t->font->layout, 0),
+ (x + t->shadow_offset_x) * PANGO_SCALE,
+ (y + t->shadow_offset_y) * 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;
+
+ /* 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