1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
|
/* See LICENSE file for copyright and license details. */
/* enums */
enum { ColFG, ColBG, ColLast };
/* typedefs */
typedef struct {
int x, y, w, h;
unsigned long norm[ColLast];
unsigned long sel[ColLast];
Drawable drawable;
GC gc;
struct {
XFontStruct *xfont;
XFontSet set;
int ascent;
int descent;
int height;
} font;
} DC; /* draw context */
/* forward declarations */
static void dccleanup(void);
static void dcsetup(void);
static void drawtext(const char *text, unsigned long col[ColLast]);
static unsigned long getcolor(const char *colstr);
static void initfont(const char *fontstr);
static int textnw(const char *text, unsigned int len);
static int textw(const char *text);
static DC dc;
void
dccleanup(void) {
if(dc.font.set)
XFreeFontSet(dpy, dc.font.set);
else
XFreeFont(dpy, dc.font.xfont);
XFreePixmap(dpy, dc.drawable);
XFreeGC(dpy, dc.gc);
}
void
dcsetup() {
/* style */
dc.norm[ColBG] = getcolor(normbgcolor);
dc.norm[ColFG] = getcolor(normfgcolor);
dc.sel[ColBG] = getcolor(selbgcolor);
dc.sel[ColFG] = getcolor(selfgcolor);
initfont(font);
/* pixmap */
dc.drawable = XCreatePixmap(dpy, parent, mw, mh, DefaultDepth(dpy, screen));
dc.gc = XCreateGC(dpy, parent, 0, NULL);
XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
if(!dc.font.set)
XSetFont(dpy, dc.gc, dc.font.xfont->fid);
}
void
drawtext(const char *text, unsigned long col[ColLast]) {
char buf[256];
int i, x, y, h, len, olen;
XRectangle r = { dc.x, dc.y, dc.w, dc.h };
XSetForeground(dpy, dc.gc, col[ColBG]);
XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
if(!text)
return;
olen = strlen(text);
h = dc.font.height;
y = dc.y + ((h+2) / 2) - (h / 2) + dc.font.ascent;
x = dc.x + (h / 2);
/* shorten text if necessary */
for(len = MIN(olen, sizeof buf); len && textnw(text, len) > dc.w - h; len--);
if(!len)
return;
memcpy(buf, text, len);
if(len < olen)
for(i = len; i && i > len - 3; buf[--i] = '.');
XSetForeground(dpy, dc.gc, col[ColFG]);
if(dc.font.set)
XmbDrawString(dpy, dc.drawable, dc.font.set, dc.gc, x, y, buf, len);
else
XDrawString(dpy, dc.drawable, dc.gc, x, y, buf, len);
}
unsigned long
getcolor(const char *colstr) {
Colormap cmap = DefaultColormap(dpy, screen);
XColor color;
if(!XAllocNamedColor(dpy, cmap, colstr, &color, &color))
eprint("drawtext: cannot allocate color '%s'\n", colstr);
return color.pixel;
}
void
initfont(const char *fontstr) {
char *def, **missing = NULL;
int i, n;
if(!fontstr || fontstr[0] == '\0')
eprint("drawtext: cannot load font: '%s'\n", fontstr);
dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
if(missing)
XFreeStringList(missing);
if(dc.font.set) {
XFontStruct **xfonts;
char **font_names;
dc.font.ascent = dc.font.descent = 0;
n = XFontsOfFontSet(dc.font.set, &xfonts, &font_names);
for(i = 0; i < n; i++) {
dc.font.ascent = MAX(dc.font.ascent, (*xfonts)->ascent);
dc.font.descent = MAX(dc.font.descent, (*xfonts)->descent);
xfonts++;
}
}
else {
if(!(dc.font.xfont = XLoadQueryFont(dpy, fontstr))
&& !(dc.font.xfont = XLoadQueryFont(dpy, "fixed")))
eprint("drawtext: cannot load font: '%s'\n", fontstr);
dc.font.ascent = dc.font.xfont->ascent;
dc.font.descent = dc.font.xfont->descent;
}
dc.font.height = dc.font.ascent + dc.font.descent;
}
int
textnw(const char *text, unsigned int len) {
XRectangle r;
if(dc.font.set) {
XmbTextExtents(dc.font.set, text, len, NULL, &r);
return r.width;
}
return XTextWidth(dc.font.xfont, text, len);
}
int
textw(const char *text) {
return textnw(text, strlen(text)) + dc.font.height;
}
|
