/* -*- 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
#include "color.h"
#include "mask.h"
#include "theme.h"
+#include "geom.h"
#include "gettext.h"
#include <X11/Xft/Xft.h>
#include <glib.h>
#include <string.h>
#include <stdlib.h>
+#ifdef USE_PANGO
+#include <locale.h>
+#endif
#define ELIPSES "..."
#define ELIPSES_LENGTH(font) \
{ OB_SHADOW_ALPHA, FcTypeInteger }
};
+#ifdef USE_PANGO
+static PangoContext *context;
+#endif
static gboolean started = FALSE;
static void font_startup(void)
g_warning(_("Couldn't initialize Xft."));
exit(EXIT_FAILURE);
}
+
+#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_font(RrFont *f)
{
+ /* xOff, yOff is the normal spacing to the next glyph. */
XGlyphInfo info;
/* measure an elipses */
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;
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;
} else
out->xftfont = font;
+#ifdef USE_PANGO
+ /* FcPatternDestroy(match); */
+#endif /* USE_PANGO */
measure_font(out);
return out;
void RrFontClose(RrFont *f)
{
if (f) {
+#ifdef USE_PANGO
+ pango_font_description_free(f->pango_font_description);
+#endif
XftFontClose(RrDisplay(f->inst), f->xftfont);
g_free(f);
}
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(RrDisplay(f->inst), f->xftfont,
*x = (signed) info.xOff + (f->shadow ? ABS(f->offset) : 0);
*y = info.height + (f->shadow ? ABS(f->offset) : 0);
+#endif /* USE_PANGO */
}
-gint 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 + 4;
+ 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);
+ (f->shadow ? f->offset : 0);
+#endif
}
gint RrFontMaxCharWidth(const RrFont *f)
return (signed) f->xftfont->max_advance_width;
}
+#ifdef USE_PANGO
+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
+ */
+ 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;
GString *text;
- gint mw, mh;
+ gint mw;
+#ifndef USE_PANGO
+ gint mh;
size_t l;
gboolean shortened = FALSE;
+#else
+ PangoLayout *pl;
+ PangoRectangle rect;
- /* center vertically */
+ pl = pango_layout_new (context);
+#endif /* USE_PANGO */
+
+ /* 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_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) {
}
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 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));
- }
+ }
+#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->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