renamed draw into drw
[dwm.git] / drw.c
1 /* See LICENSE file for copyright and license details. */
2 #include <stdio.h>
3 #include <stdlib.h>
4 #include <string.h>
5 #include <X11/Xlib.h>
6
7 #include "drw.h"
8 #include "util.h"
9
10 Drw *
11 drw_create(Display *dpy, int screen, Window win, unsigned int w, unsigned int h) {
12 Drw *drw = (Drw *)calloc(1, sizeof(Drw));
13 drw->dpy = dpy;
14 drw->screen = screen;
15 drw->win = win;
16 drw->w = w;
17 drw->h = h;
18 drw->drwable = XCreatePixmap(dpy, win, w, h, DefaultDepth(dpy, screen));
19 drw->gc = XCreateGC(dpy, win, 0, NULL);
20 XSetLineAttributes(dpy, drw->gc, 1, LineSolid, CapButt, JoinMiter);
21 return drw;
22 }
23
24 void
25 drw_resize(Drw *drw, unsigned int w, unsigned int h) {
26 if(!drw)
27 return;
28 drw->w = w;
29 drw->h = h;
30 XFreePixmap(drw->dpy, drw->drwable);
31 drw->drwable = XCreatePixmap(drw->dpy, drw->win, w, h, DefaultDepth(drw->dpy, drw->screen));
32 }
33
34 void
35 drw_free(Drw *drw) {
36 XFreePixmap(drw->dpy, drw->drwable);
37 XFreeGC(drw->dpy, drw->gc);
38 free(drw);
39 }
40
41 Fnt *
42 drw_font_create(Drw *drw, const char *fontname) {
43 Fnt *font;
44 char *def, **missing;
45 int n;
46
47 if(!drw)
48 return NULL;
49 font = (Fnt *)calloc(1, sizeof(Fnt));
50 font->set = XCreateFontSet(drw->dpy, fontname, &missing, &n, &def);
51 if(missing) {
52 while(n--)
53 fprintf(stderr, "drw: missing fontset: %s\n", missing[n]);
54 XFreeStringList(missing);
55 }
56 if(font->set) {
57 XFontStruct **xfonts;
58 char **font_names;
59 XExtentsOfFontSet(font->set);
60 n = XFontsOfFontSet(font->set, &xfonts, &font_names);
61 while(n--) {
62 font->ascent = MAX(font->ascent, (*xfonts)->ascent);
63 font->descent = MAX(font->descent,(*xfonts)->descent);
64 xfonts++;
65 }
66 }
67 else {
68 if(!(font->xfont = XLoadQueryFont(drw->dpy, fontname))
69 && !(font->xfont = XLoadQueryFont(drw->dpy, "fixed")))
70 die("error, cannot load font: '%s'\n", fontname);
71 font->ascent = font->xfont->ascent;
72 font->descent = font->xfont->descent;
73 }
74 font->h = font->ascent + font->descent;
75 return font;
76 }
77
78 void
79 drw_font_free(Drw *drw, Fnt *font) {
80 if(!drw || !font)
81 return;
82 if(font->set)
83 XFreeFontSet(drw->dpy, font->set);
84 else
85 XFreeFont(drw->dpy, font->xfont);
86 free(font);
87 }
88
89 Clr *
90 drw_clr_create(Drw *drw, const char *clrname) {
91 Clr *clr = (Clr *)calloc(1, sizeof(Clr));
92 Colormap cmap = DefaultColormap(drw->dpy, drw->screen);
93 XColor color;
94
95 if(!XAllocNamedColor(drw->dpy, cmap, clrname, &color, &color))
96 die("error, cannot allocate color '%s'\n", clrname);
97 clr->rgb = color.pixel;
98 return clr;
99 }
100
101 void
102 drw_clr_free(Drw *drw, Clr *clr) {
103 if(!clr)
104 return;
105 free(clr);
106 }
107
108 void
109 drw_setfont(Drw *drw, Fnt *font) {
110 if(!drw)
111 return;
112 drw->font = font;
113 }
114
115 void
116 drw_setfg(Drw *drw, Clr *clr) {
117 if(!drw)
118 return;
119 drw->fg = clr;
120 }
121
122 void
123 drw_setbg(Drw *drw, Clr *clr) {
124 if(!drw)
125 return;
126 drw->bg = clr;
127 }
128
129 void
130 drw_rect(Drw *drw, int x, int y, unsigned int w, unsigned int h, Bool filled, Bool empty, Bool invert) {
131 int dx;
132
133 if(!drw || !drw->font || !drw->fg || !drw->bg)
134 return;
135 XSetForeground(drw->dpy, drw->gc, invert ? drw->bg->rgb : drw->fg->rgb);
136 dx = (drw->font->ascent + drw->font->descent + 2) / 4;
137 if(filled)
138 XFillRectangle(drw->dpy, drw->drwable, drw->gc, x+1, y+1, dx+1, dx+1);
139 else if(empty)
140 XDrawRectangle(drw->dpy, drw->drwable, drw->gc, x+1, y+1, dx, dx);
141 }
142
143 void
144 drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, const char *text, Bool invert) {
145 char buf[256];
146 int i, tx, ty, len, olen;
147 Extnts tex;
148
149 if(!drw || !drw->fg || !drw->bg)
150 return;
151 XSetForeground(drw->dpy, drw->gc, invert ? drw->fg->rgb : drw->bg->rgb);
152 XFillRectangle(drw->dpy, drw->drwable, drw->gc, x, y, w, h);
153 if(!text || !drw->font)
154 return;
155 olen = strlen(text);
156 drw_getexts(drw, text, olen, &tex);
157 ty = y + (h / 2) - tex.yOff;
158 tx = x + tex.xOff;
159 /* shorten text if necessary */
160 for(len = MIN(olen, sizeof buf); len && tex.w > w - tex.h; len--)
161 drw_getexts(drw, text, len, &tex);
162 if(!len)
163 return;
164 memcpy(buf, text, len);
165 if(len < olen)
166 for(i = len; i && i > len - 3; buf[--i] = '.');
167 XSetForeground(drw->dpy, drw->gc, invert ? drw->bg->rgb : drw->fg->rgb);
168 if(drw->font->set)
169 XmbDrawString(drw->dpy, drw->drwable, drw->font->set, drw->gc, tx, ty, buf, len);
170 else
171 XDrawString(drw->dpy, drw->drwable, drw->gc, tx, ty, buf, len);
172 }
173
174 void
175 drw_map(Drw *drw, int x, int y, unsigned int w, unsigned int h) {
176 if(!drw)
177 return;
178 XCopyArea(drw->dpy, drw->drwable, drw->win, drw->gc, x, y, w, h, x, y);
179 XSync(drw->dpy, False);
180 }
181
182
183 void
184 drw_getexts(Drw *drw, const char *text, unsigned int len, Extnts *tex) {
185 XRectangle r;
186
187 if(!drw || !drw->font || !text)
188 return;
189 if(drw->font->set) {
190 XmbTextExtents(drw->font->set, text, len, NULL, &r);
191 tex->xOff = r.x;
192 tex->yOff = r.y;
193 tex->w = r.width;
194 tex->h = r.height;
195 }
196 else {
197 tex->h = drw->font->ascent + drw->font->descent;
198 tex->w = XTextWidth(drw->font->xfont, text, len);
199 tex->xOff = tex->h / 2;
200 tex->yOff = (tex->h / 2) + drw->font->ascent;
201 }
202 }