]>
Dogcows Code - chaz/openbox/blob - render/font.c
71302467ad7c25da44f379f46a8999a146c6345b
1 /* -*- indent-tabs-mode: nil; tab-width: 4; c-basic-offset: 4; -*-
3 font.c for the Openbox window manager
4 Copyright (c) 2003 Ben Jansens
5 Copyright (c) 2003 Derek Foreman
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 See the COPYING file for a copy of the GNU General Public License.
27 #include <X11/Xft/Xft.h>
33 #define ELIPSES_LENGTH(font) \
34 (font->elipses_length + (font->shadow ? font->offset : 0))
36 #define OB_SHADOW "shadow"
37 #define OB_SHADOW_OFFSET "shadowoffset"
38 #define OB_SHADOW_ALPHA "shadowtint"
40 FcObjectType objs
[] = {
41 { OB_SHADOW
, FcTypeBool
},
42 { OB_SHADOW_OFFSET
, FcTypeInteger
},
43 { OB_SHADOW_ALPHA
, FcTypeInteger
}
47 PangoContext
*context
;
49 static gboolean started
= FALSE
;
51 static void font_startup(void)
54 g_warning(_("Couldn't initialize Xft."));
60 /* these will never be freed, but we will need them until we shut down anyway */
61 pfm
= pango_xft_get_font_map(RrDisplay(NULL
), RrScreen(NULL
));
62 context
= pango_xft_get_context(RrDisplay(NULL
), RrScreen(NULL
));
63 #endif /* USE_PANGO */
64 /* Here we are teaching xft about the shadow, shadowoffset & shadowtint */
65 FcNameRegisterObjectTypes(objs
, (sizeof(objs
) / sizeof(objs
[0])));
68 static void measure_font(RrFont
*f
)
70 /* xOff, yOff is the normal spacing to the next glyph. */
73 /* measure an elipses */
74 XftTextExtentsUtf8(RrDisplay(f
->inst
), f
->xftfont
,
75 (FcChar8
*)ELIPSES
, strlen(ELIPSES
), &info
);
76 f
->elipses_length
= (signed) info
.xOff
;
79 static RrFont
*openfont(const RrInstance
*inst
, gchar
*fontstring
)
81 /* This function is called for each font in the theme file. */
82 /* It returns a pointer to a RrFont struct after filling it. */
84 FcPattern
*pat
, *match
;
89 guchar
*tmp_string
= NULL
;
91 #endif /* USE_PANGO */
93 if (!(pat
= XftNameParse(fontstring
)))
96 match
= XftFontMatch(RrDisplay(inst
), RrScreen(inst
), pat
, &res
);
97 FcPatternDestroy(pat
);
101 out
= g_new(RrFont
, 1);
104 /* printf("\n\n%s\n\n",fontstring);
105 FcPatternPrint(match); */
107 out
->pango_font_description
= pango_font_description_new();
109 if (FcPatternGetString(match
, "family", 0, &tmp_string
) != FcResultTypeMismatch
) {
110 pango_font_description_set_family(out
->pango_font_description
, (gchar
*)tmp_string
);
113 if (FcPatternGetString(match
, "style", 0, &tmp_string
) != FcResultTypeMismatch
) {
115 if (!strcasecmp("bold", (gchar
*)tmp_string
)) {
116 pango_font_description_set_weight(out
->pango_font_description
, PANGO_WEIGHT_BOLD
);
119 else if (!strcasecmp("italic", (gchar
*)tmp_string
)) {
120 pango_font_description_set_style(out
->pango_font_description
, PANGO_STYLE_ITALIC
);
125 if (FcPatternGetInteger(match
, "pixelsize", 0, &tmp_int
) != FcResultTypeMismatch
) {
126 /* TODO: is PANGO_SCALE correct ?? */
127 pango_font_description_set_size(out
->pango_font_description
, tmp_int
*PANGO_SCALE
);
130 PangoFontset
*pfs
= pango_font_map_load_fontset(pfm
, context
, out
->pango_font_description
, NULL
);
131 PangoFontMetrics
*metrics
= pango_fontset_get_metrics(pfs
);
132 out
->pango_ascent
= pango_font_metrics_get_ascent(metrics
);
133 out
->pango_descent
= pango_font_metrics_get_descent(metrics
);
134 pango_font_metrics_unref(metrics
);
135 #endif /* USE_PANGO */
137 if (FcPatternGetBool(match
, OB_SHADOW
, 0, &out
->shadow
) != FcResultMatch
)
140 if (FcPatternGetInteger(match
, OB_SHADOW_OFFSET
, 0, &out
->offset
) !=
144 if (FcPatternGetInteger(match
, OB_SHADOW_ALPHA
, 0, &tint
) != FcResultMatch
)
146 if (tint
> 100) tint
= 100;
147 else if (tint
< -100) tint
= -100;
150 font
= XftFontOpenPattern(RrDisplay(inst
), match
);
152 FcPatternDestroy(match
);
159 /* FcPatternDestroy(match); */
160 #endif /* USE_PANGO */
166 RrFont
*RrFontOpen(const RrInstance
*inst
, gchar
*fontstring
)
175 if ((out
= openfont(inst
, fontstring
)))
177 g_warning(_("Unable to load font: %s\n"), fontstring
);
178 g_warning(_("Trying fallback font: %s\n"), "sans");
180 if ((out
= openfont(inst
, "sans")))
182 g_warning(_("Unable to load font: %s\n"), "sans");
187 void RrFontClose(RrFont
*f
)
190 XftFontClose(RrDisplay(f
->inst
), f
->xftfont
);
194 pango_font_description_free(f
->pango_font_description
);
198 static void font_measure_full(const RrFont
*f
, const gchar
*str
,
204 pl
= pango_layout_new (context
);
205 pango_layout_set_text(pl
, str
, -1);
206 pango_layout_set_font_description(pl
, f
->pango_font_description
);
207 pango_layout_set_single_paragraph_mode(pl
, TRUE
);
208 pango_layout_get_pixel_extents(pl
, NULL
, &rect
);
209 *x
= rect
.width
+ (f
->shadow
? ABS(f
->offset
) : 0);
210 *y
= rect
.height
+ (f
->shadow
? ABS(f
->offset
) : 0);
216 XftTextExtentsUtf8(RrDisplay(f
->inst
), f
->xftfont
,
217 (const FcChar8
*)str
, strlen(str
), &info
);
219 *x
= (signed) info
.xOff
+ (f
->shadow
? ABS(f
->offset
) : 0);
220 *y
= info
.height
+ (f
->shadow
? ABS(f
->offset
) : 0);
221 #endif /* USE_PANGO */
224 RrSize
*RrFontMeasureString(const RrFont
*f
, const gchar
*str
)
227 size
= g_new(RrSize
, 1);
228 font_measure_full (f
, str
, &size
->width
, &size
->height
);
232 gint
RrFontHeight(const RrFont
*f
)
235 return (f
->pango_ascent
239 return f
->xftfont
->ascent
+ f
->xftfont
->descent
+
240 (f
->shadow
? f
->offset
: 0);
244 gint
RrFontMaxCharWidth(const RrFont
*f
)
246 return (signed) f
->xftfont
->max_advance_width
;
249 void RrFontDraw(XftDraw
*d
, RrTextureText
*t
, RrRect
*area
)
257 gboolean shortened
= FALSE
;
260 PangoLayoutLine
*pll
;
263 pl
= pango_layout_new (context
);
264 #endif /* USE_PANGO */
266 /* center vertically */
267 #ifndef USE_PANGO /* We have to wait for the text string with pango */
269 (area
->height
- RrFontHeight(t
->font
)) / 2;
271 /* the +2 and -4 leave a small blank edge on the sides */
276 text
= g_string_new(t
->string
);
278 l
= g_utf8_strlen(text
->str
, -1);
279 font_measure_full(t
->font
, text
->str
, &mw
, &mh
);
280 while (l
&& mw
> area
->width
) {
282 /* remove a character from the middle */
283 text
= g_string_erase(text
, l
-- / 2, 1);
284 /* if the elipses are too large, don't show them at all */
285 if (ELIPSES_LENGTH(t
->font
) > area
->width
)
287 font_measure_full(t
->font
, text
->str
, &mw
, &mh
);
288 mw
+= ELIPSES_LENGTH(t
->font
);
291 text
= g_string_insert(text
, (l
+ 1) / 2, ELIPSES
);
296 l
= strlen(text
->str
); /* number of bytes */
299 pango_layout_set_text(pl
, text
->str
, -1);
300 pango_layout_set_font_description(pl
, t
->font
->pango_font_description
);
301 pango_layout_set_single_paragraph_mode(pl
, TRUE
);
302 pango_layout_set_width(pl
, w
* PANGO_SCALE
);
303 pango_layout_set_ellipsize(pl
, PANGO_ELLIPSIZE_MIDDLE
);
304 /* This doesn't work with layout_line() of course */
305 /* pango_layout_set_alignment(pl, (PangoAlignment)(t->justify)); */
306 pango_layout_get_pixel_extents(pl
, NULL
, &rect
);
310 /* go to great lengths to center the text while keeping the baseline in
312 t
->font
->pango_descent
/ PANGO_SCALE
;
314 #endif /* USE_PANGO */
316 switch (t
->justify
) {
317 case RR_JUSTIFY_LEFT
:
319 case RR_JUSTIFY_RIGHT
:
322 case RR_JUSTIFY_CENTER
:
327 if (t
->font
->shadow
) {
328 if (t
->font
->tint
>= 0) {
332 c
.color
.alpha
= 0xffff * t
->font
->tint
/ 100;
333 c
.pixel
= BlackPixel(RrDisplay(t
->font
->inst
),
334 RrScreen(t
->font
->inst
));
336 c
.color
.red
= 0xffff;
337 c
.color
.green
= 0xffff;
338 c
.color
.blue
= 0xffff;
339 c
.color
.alpha
= 0xffff * -t
->font
->tint
/ 100;
340 c
.pixel
= WhitePixel(RrDisplay(t
->font
->inst
),
341 RrScreen(t
->font
->inst
));
344 XftDrawStringUtf8(d
, &c
, t
->font
->xftfont
, x
+ t
->font
->offset
,
345 t
->font
->xftfont
->ascent
+ y
+ t
->font
->offset
,
346 (FcChar8
*)text
->str
, l
);
347 #else /* USE_PANGO */
349 pango_xft_render_layout_line(d
, &c
, pll
= pango_layout_get_line(pl
, 0),
350 (x
+ t
->font
->offset
) * PANGO_SCALE
,
351 (y
+ t
->font
->offset
) * PANGO_SCALE
);
352 #endif /* USE_PANGO */
354 c
.color
.red
= t
->color
->r
| t
->color
->r
<< 8;
355 c
.color
.green
= t
->color
->g
| t
->color
->g
<< 8;
356 c
.color
.blue
= t
->color
->b
| t
->color
->b
<< 8;
357 c
.color
.alpha
= 0xff | 0xff << 8; /* fully opaque text */
358 c
.pixel
= t
->color
->pixel
;
361 XftDrawStringUtf8(d
, &c
, t
->font
->xftfont
, x
,
362 t
->font
->xftfont
->ascent
+ y
,
363 (FcChar8
*)text
->str
, l
);
364 #else /* USE_PANGO */
365 /* This looks retarded, but layout_line() bases y on the baseline, while
366 * layout() bases y on the top of the ink layout shit ass fucking crap.
367 * We want the baseline to always be in the same place, thusly, we use
369 * The actual line doesn't need to be freed */
370 pango_xft_render_layout_line(d
, &c
, pll
= pango_layout_get_line(pl
, 0),
371 x
* PANGO_SCALE
, y
* PANGO_SCALE
);
375 g_string_free(text
, TRUE
);
This page took 0.081029 seconds and 4 git commands to generate.