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view draw.c @ 452:026aba558fdf

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added some comments
author Anselm R. Garbe <arg@10kloc.org>
date Mon, 11 Sep 2006 07:40:41 +0200
parents fc9d35252ab4
children 9d23330a5268
line source
1 /*
2 * (C)opyright MMIV-MMVI Anselm R. Garbe <garbeam at gmail dot com>
3 * See LICENSE file for license details.
4 */
5 #include "dwm.h"
6 #include <stdio.h>
7 #include <string.h>
8 #include <X11/Xlocale.h>
9
10 /* static */
11
12 static unsigned int
13 textnw(const char *text, unsigned int len)
14 {
15 XRectangle r;
16
17 if(dc.font.set) {
18 XmbTextExtents(dc.font.set, text, len, NULL, &r);
19 return r.width;
20 }
21 return XTextWidth(dc.font.xfont, text, len);
22 }
23
24 static void
25 drawtext(const char *text, unsigned long col[ColLast], Bool highlight)
26 {
27 int x, y, w, h;
28 static char buf[256];
29 unsigned int len, olen;
30 XGCValues gcv;
31 XRectangle r = { dc.x, dc.y, dc.w, dc.h };
32
33 XSetForeground(dpy, dc.gc, col[ColBG]);
34 XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
35
36 if(!text)
37 return;
38
39 w = 0;
40 olen = len = strlen(text);
41 if(len >= sizeof(buf))
42 len = sizeof(buf) - 1;
43 memcpy(buf, text, len);
44 buf[len] = 0;
45
46 h = dc.font.ascent + dc.font.descent;
47 y = dc.y + (dc.h / 2) - (h / 2) + dc.font.ascent;
48 x = dc.x + (h / 2);
49
50 /* shorten text if necessary */
51 while(len && (w = textnw(buf, len)) > dc.w - h)
52 buf[--len] = 0;
53 if(len < olen) {
54 if(len > 1)
55 buf[len - 1] = '.';
56 if(len > 2)
57 buf[len - 2] = '.';
58 if(len > 3)
59 buf[len - 3] = '.';
60 }
61
62 if(w > dc.w)
63 return; /* too long */
64 gcv.foreground = col[ColFG];
65 if(dc.font.set) {
66 XChangeGC(dpy, dc.gc, GCForeground, &gcv);
67 XmbDrawString(dpy, dc.drawable, dc.font.set, dc.gc, x, y, buf, len);
68 }
69 else {
70 gcv.font = dc.font.xfont->fid;
71 XChangeGC(dpy, dc.gc, GCForeground | GCFont, &gcv);
72 XDrawString(dpy, dc.drawable, dc.gc, x, y, buf, len);
73 }
74 if(highlight) {
75 r.x = dc.x + 2;
76 r.y = dc.y + 2;
77 r.width = r.height = 3;
78 XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
79 }
80 }
81
82 /* extern */
83
84 void
85 drawall()
86 {
87 Client *c;
88
89 for(c = clients; c; c = getnext(c->next))
90 drawtitle(c);
91 drawstatus();
92 }
93
94 void
95 drawstatus()
96 {
97 int i, x;
98
99 dc.x = dc.y = 0;
100
101 for(i = 0; i < ntags; i++) {
102 dc.w = textw(tags[i]);
103 if(seltag[i])
104 drawtext(tags[i], dc.sel, sel && sel->tags[i]);
105 else
106 drawtext(tags[i], dc.norm, sel && sel->tags[i]);
107 dc.x += dc.w;
108 }
109
110 dc.w = bmw;
111 drawtext(arrange == dotile ? TILESYMBOL : FLOATSYMBOL, dc.status, False);
112
113 x = dc.x + dc.w;
114 dc.w = textw(stext);
115 dc.x = bx + bw - dc.w;
116 if(dc.x < x) {
117 dc.x = x;
118 dc.w = bw - x;
119 }
120 drawtext(stext, dc.status, False);
121
122 if((dc.w = dc.x - x) > bh) {
123 dc.x = x;
124 if(sel)
125 drawtext(sel->name, dc.sel, False);
126 else
127 drawtext(NULL, dc.norm, False);
128 }
129 XCopyArea(dpy, dc.drawable, barwin, dc.gc, 0, 0, bw, bh, 0, 0);
130 XSync(dpy, False);
131 }
132
133 void
134 drawtitle(Client *c)
135 {
136 if(c == sel && issel) {
137 drawstatus();
138 XUnmapWindow(dpy, c->twin);
139 XSetWindowBorder(dpy, c->win, dc.sel[ColBG]);
140 return;
141 }
142
143 XSetWindowBorder(dpy, c->win, dc.norm[ColBG]);
144 XMapWindow(dpy, c->twin);
145 dc.x = dc.y = 0;
146 dc.w = c->tw;
147 drawtext(c->name, dc.norm, False);
148 XCopyArea(dpy, dc.drawable, c->twin, dc.gc, 0, 0, c->tw, c->th, 0, 0);
149 XSync(dpy, False);
150 }
151
152 unsigned long
153 getcolor(const char *colstr)
154 {
155 Colormap cmap = DefaultColormap(dpy, screen);
156 XColor color;
157
158 XAllocNamedColor(dpy, cmap, colstr, &color, &color);
159 return color.pixel;
160 }
161
162 void
163 setfont(const char *fontstr)
164 {
165 char **missing, *def;
166 int i, n;
167
168 missing = NULL;
169 setlocale(LC_ALL, "");
170 if(dc.font.set)
171 XFreeFontSet(dpy, dc.font.set);
172 dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
173 if(missing) {
174 while(n--)
175 fprintf(stderr, "missing fontset: %s\n", missing[n]);
176 XFreeStringList(missing);
177 if(dc.font.set) {
178 XFreeFontSet(dpy, dc.font.set);
179 dc.font.set = NULL;
180 }
181 }
182 if(dc.font.set) {
183 XFontSetExtents *font_extents;
184 XFontStruct **xfonts;
185 char **font_names;
186
187 dc.font.ascent = dc.font.descent = 0;
188 font_extents = XExtentsOfFontSet(dc.font.set);
189 n = XFontsOfFontSet(dc.font.set, &xfonts, &font_names);
190 for(i = 0, dc.font.ascent = 0, dc.font.descent = 0; i < n; i++) {
191 if(dc.font.ascent < (*xfonts)->ascent)
192 dc.font.ascent = (*xfonts)->ascent;
193 if(dc.font.descent < (*xfonts)->descent)
194 dc.font.descent = (*xfonts)->descent;
195 xfonts++;
196 }
197 }
198 else {
199 if(dc.font.xfont)
200 XFreeFont(dpy, dc.font.xfont);
201 dc.font.xfont = NULL;
202 dc.font.xfont = XLoadQueryFont(dpy, fontstr);
203 if (!dc.font.xfont)
204 dc.font.xfont = XLoadQueryFont(dpy, "fixed");
205 if (!dc.font.xfont)
206 eprint("error, cannot init 'fixed' font\n");
207 dc.font.ascent = dc.font.xfont->ascent;
208 dc.font.descent = dc.font.xfont->descent;
209 }
210 dc.font.height = dc.font.ascent + dc.font.descent;
211 }
212
213 unsigned int
214 textw(const char *text)
215 {
216 return textnw(text, strlen(text)) + dc.font.height;
217 }