1 /* See LICENSE file for copyright and license details. */
10 #define MAX(a, b) ((a) > (b) ? (a) : (b))
11 #define MIN(a, b) ((a) < (b) ? (a) : (b))
12 #define DEFFONT "fixed"
14 static Bool loadfont(DC *dc, const char *fontstr);
17 drawrect(DC *dc, int x, int y, unsigned int w, unsigned int h, Bool fill, unsigned long color) {
18 XRectangle r = { dc->x + x, dc->y + y, w, h };
24 XSetForeground(dc->dpy, dc->gc, color);
25 (fill ? XFillRectangles : XDrawRectangles)(dc->dpy, dc->canvas, dc->gc, &r, 1);
29 drawtext(DC *dc, const char *text, unsigned long col[ColLast]) {
31 size_t mn, n = strlen(text);
33 /* shorten text if necessary */
34 for(mn = MIN(n, sizeof buf); textnw(dc, text, mn) + dc->font.height/2 > dc->w; mn--)
37 memcpy(buf, text, mn);
39 for(n = MAX(mn-3, 0); n < mn; buf[n++] = '.');
41 drawrect(dc, 0, 0, dc->w, dc->h, True, BG(dc, col));
42 drawtextn(dc, buf, mn, col);
46 drawtextn(DC *dc, const char *text, size_t n, unsigned long col[ColLast]) {
47 int x = dc->x + dc->font.height/2;
48 int y = dc->y + dc->font.ascent+1;
50 XSetForeground(dc->dpy, dc->gc, FG(dc, col));
52 XmbDrawString(dc->dpy, dc->canvas, dc->font.set, dc->gc, x, y, text, n);
54 XSetFont(dc->dpy, dc->gc, dc->font.xfont->fid);
55 XDrawString(dc->dpy, dc->canvas, dc->gc, x, y, text, n);
60 eprintf(const char *fmt, ...) {
64 vfprintf(stderr, fmt, ap);
67 if(fmt[strlen(fmt)-1] == ':') {
77 XFreeFontSet(dc->dpy, dc->font.set);
79 XFreeFont(dc->dpy, dc->font.xfont);
81 XFreePixmap(dc->dpy, dc->canvas);
82 XFreeGC(dc->dpy, dc->gc);
83 XCloseDisplay(dc->dpy);
88 getcolor(DC *dc, const char *colstr) {
89 Colormap cmap = DefaultColormap(dc->dpy, DefaultScreen(dc->dpy));
92 if(!XAllocNamedColor(dc->dpy, cmap, colstr, &color, &color))
93 eprintf("cannot allocate color '%s'\n", colstr);
101 if(!setlocale(LC_CTYPE, "") || !XSupportsLocale())
102 fprintf(stderr, "no locale support\n");
103 if(!(dc = calloc(1, sizeof *dc)))
104 eprintf("cannot malloc %u bytes:", sizeof *dc);
105 if(!(dc->dpy = XOpenDisplay(NULL)))
106 eprintf("cannot open display\n");
108 dc->gc = XCreateGC(dc->dpy, DefaultRootWindow(dc->dpy), 0, NULL);
109 XSetLineAttributes(dc->dpy, dc->gc, 1, LineSolid, CapButt, JoinMiter);
114 initfont(DC *dc, const char *fontstr) {
115 if(!loadfont(dc, fontstr ? fontstr : DEFFONT)) {
117 fprintf(stderr, "cannot load font '%s'\n", fontstr);
118 if(fontstr == NULL || !loadfont(dc, DEFFONT))
119 eprintf("cannot load font '%s'\n", DEFFONT);
121 dc->font.height = dc->font.ascent + dc->font.descent;
125 loadfont(DC *dc, const char *fontstr) {
126 char *def, **missing;
131 if((dc->font.set = XCreateFontSet(dc->dpy, fontstr, &missing, &n, &def))) {
133 XFontStruct **xfonts;
135 n = XFontsOfFontSet(dc->font.set, &xfonts, &names);
136 for(i = dc->font.ascent = dc->font.descent = 0; i < n; i++) {
137 dc->font.ascent = MAX(dc->font.ascent, xfonts[i]->ascent);
138 dc->font.descent = MAX(dc->font.descent, xfonts[i]->descent);
141 else if((dc->font.xfont = XLoadQueryFont(dc->dpy, fontstr))) {
142 dc->font.ascent = dc->font.xfont->ascent;
143 dc->font.descent = dc->font.xfont->descent;
146 XFreeStringList(missing);
147 return (dc->font.set || dc->font.xfont);
151 mapdc(DC *dc, Window win, unsigned int w, unsigned int h) {
152 XCopyArea(dc->dpy, dc->canvas, win, dc->gc, 0, 0, w, h, 0, 0);
156 resizedc(DC *dc, unsigned int w, unsigned int h) {
158 XFreePixmap(dc->dpy, dc->canvas);
160 dc->canvas = XCreatePixmap(dc->dpy, DefaultRootWindow(dc->dpy), w, h,
161 DefaultDepth(dc->dpy, DefaultScreen(dc->dpy)));
167 textnw(DC *dc, const char *text, size_t len) {
171 XmbTextExtents(dc->font.set, text, len, NULL, &r);
174 return XTextWidth(dc->font.xfont, text, len);
178 textw(DC *dc, const char *text) {
179 return textnw(dc, text, strlen(text)) + dc->font.height;