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Dogcows Code - chaz/openbox/blob - render/font.c
5 #include "kernel/geom.h"
6 #include "kernel/gettext.h"
7 #define _(str) gettext(str)
9 #include <X11/Xft/Xft.h>
14 #define ELIPSES_LENGTH(font, shadow, offset) \
15 (font->elipses_length + (shadow ? offset : 0))
17 static gboolean started
= FALSE
;
19 static void font_startup(void)
25 g_warning(_("Couldn't initialize Xft.\n"));
29 version
= XftGetVersion();
30 g_message("Using Xft %d.%d.%d (Built against %d.%d.%d).",
31 version
/ 10000 % 100, version
/ 100 % 100, version
% 100,
32 XFT_MAJOR
, XFT_MINOR
, XFT_REVISION
);
36 static void measure_font(RrFont
*f
)
40 /* measure an elipses */
41 XftTextExtentsUtf8(RrDisplay(f
->inst
), f
->xftfont
,
42 (FcChar8
*)ELIPSES
, strlen(ELIPSES
), &info
);
43 f
->elipses_length
= (signed) info
.xOff
;
46 RrFont
*RrFontOpen(const RrInstance
*inst
, char *fontstring
)
56 if ((xf
= XftFontOpenName(RrDisplay(inst
), RrScreen(inst
), fontstring
))) {
57 out
= g_new(RrFont
, 1);
63 g_warning(_("Unable to load font: %s\n"), fontstring
);
64 g_warning(_("Trying fallback font: %s\n"), "sans");
66 if ((xf
= XftFontOpenName(RrDisplay(inst
), RrScreen(inst
), "sans"))) {
67 out
= g_new(RrFont
, 1);
73 g_warning(_("Unable to load font: %s\n"), "sans");
74 g_warning(_("Aborting!.\n"));
76 exit(3); /* can't continue without a font */
79 void RrFontClose(RrFont
*f
)
82 XftFontClose(RrDisplay(f
->inst
), f
->xftfont
);
87 static void font_measure_full(const RrFont
*f
, const gchar
*str
,
88 gint shadow
, gint offset
, gint
*x
, gint
*y
)
92 XftTextExtentsUtf8(RrDisplay(f
->inst
), f
->xftfont
,
93 (const FcChar8
*)str
, strlen(str
), &info
);
95 *x
= (signed) info
.xOff
+ (shadow
? ABS(offset
) : 0);
96 *y
= info
.height
+ (shadow
? ABS(offset
) : 0);
99 int RrFontMeasureString(const RrFont
*f
, const gchar
*str
,
100 gint shadow
, gint offset
)
103 font_measure_full (f
, str
, shadow
, offset
, &x
, &y
);
107 int RrFontHeight(const RrFont
*f
, gint shadow
, gint offset
)
109 return f
->xftfont
->ascent
+ f
->xftfont
->descent
+ (shadow
? offset
: 0);
112 int RrFontMaxCharWidth(const RrFont
*f
)
114 return (signed) f
->xftfont
->max_advance_width
;
117 void RrFontDraw(XftDraw
*d
, RrTextureText
*t
, Rect
*area
)
124 gboolean shortened
= FALSE
;
126 /* center vertically */
128 (area
->height
- RrFontHeight(t
->font
, t
->shadow
, t
->offset
)) / 2;
132 text
= g_string_new(t
->string
);
133 l
= g_utf8_strlen(text
->str
, -1);
134 font_measure_full(t
->font
, text
->str
, t
->shadow
, t
->offset
, &mw
, &mh
);
135 while (l
&& mw
> area
->width
) {
137 /* remove a character from the middle */
138 text
= g_string_erase(text
, l
-- / 2, 1);
139 em
= ELIPSES_LENGTH(t
->font
, t
->shadow
, t
->offset
);
140 /* if the elipses are too large, don't show them at all */
141 if (em
> area
->width
)
143 font_measure_full(t
->font
, text
->str
, t
->shadow
, t
->offset
, &mw
, &mh
);
147 text
= g_string_insert(text
, (l
+ 1) / 2, ELIPSES
);
152 switch (t
->justify
) {
153 case RR_JUSTIFY_LEFT
:
156 case RR_JUSTIFY_RIGHT
:
157 x
= area
->x
+ (w
- mw
);
159 case RR_JUSTIFY_CENTER
:
160 x
= area
->x
+ (w
- mw
) / 2;
164 l
= strlen(text
->str
); /* number of bytes */
171 c
.color
.alpha
= 0xffff * t
->tint
/ 100; /* transparent shadow */
172 c
.pixel
= BlackPixel(RrDisplay(t
->font
->inst
),
173 RrScreen(t
->font
->inst
));
175 c
.color
.red
= 0xffff * -t
->tint
/ 100;
176 c
.color
.green
= 0xffff * -t
->tint
/ 100;
177 c
.color
.blue
= 0xffff * -t
->tint
/ 100;
178 c
.color
.alpha
= 0xffff * -t
->tint
/ 100; /* transparent shadow */
179 c
.pixel
= WhitePixel(RrDisplay(t
->font
->inst
),
180 RrScreen(t
->font
->inst
));
182 XftDrawStringUtf8(d
, &c
, t
->font
->xftfont
, x
+ t
->offset
,
183 t
->font
->xftfont
->ascent
+ y
+ t
->offset
,
184 (FcChar8
*)text
->str
, l
);
186 c
.color
.red
= t
->color
->r
| t
->color
->r
<< 8;
187 c
.color
.green
= t
->color
->g
| t
->color
->g
<< 8;
188 c
.color
.blue
= t
->color
->b
| t
->color
->b
<< 8;
189 c
.color
.alpha
= 0xff | 0xff << 8; /* fully opaque text */
190 c
.pixel
= t
->color
->pixel
;
192 XftDrawStringUtf8(d
, &c
, t
->font
->xftfont
, x
,
193 t
->font
->xftfont
->ascent
+ y
,
194 (FcChar8
*)text
->str
, l
);
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