/* See LICENSE file for copyright and license details. */
-#include <ctype.h>
#include <locale.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
-#include <strings.h>
#include <X11/Xlib.h>
#include "draw.h"
-/* macros */
-#define MIN(a, b) ((a) < (b) ? (a) : (b))
-#define MAX(a, b) ((a) > (b) ? (a) : (b))
+#define MAX(a, b) ((a) > (b) ? (a) : (b))
+#define MIN(a, b) ((a) < (b) ? (a) : (b))
+#define DEFAULTFN "fixed"
-/* variables */
-const char *progname;
+static Bool loadfont(DC *dc, const char *fontstr);
void
-cleanupdraw(DC *dc) {
- if(dc->font.set)
- XFreeFontSet(dc->dpy, dc->font.set);
+drawrect(DC *dc, int x, int y, unsigned int w, unsigned int h, Bool fill, unsigned long color) {
+ XSetForeground(dc->dpy, dc->gc, color);
+ if(fill)
+ XFillRectangle(dc->dpy, dc->canvas, dc->gc, dc->x + x, dc->y + y, w, h);
else
- XFreeFont(dc->dpy, dc->font.xfont);
- XFreePixmap(dc->dpy, dc->drawable);
- XFreeGC(dc->dpy, dc->gc);
+ XDrawRectangle(dc->dpy, dc->canvas, dc->gc, dc->x + x, dc->y + y, w-1, h-1);
}
void
-setupdraw(DC *dc, Window w) {
- XWindowAttributes wa;
+drawtext(DC *dc, const char *text, unsigned long col[ColLast]) {
+ char buf[BUFSIZ];
+ size_t mn, n = strlen(text);
- XGetWindowAttributes(dc->dpy, w, &wa);
- dc->drawable = XCreatePixmap(dc->dpy, w, wa.width, wa.height,
- DefaultDepth(dc->dpy, DefaultScreen(dc->dpy)));
- dc->gc = XCreateGC(dc->dpy, w, 0, NULL);
- XSetLineAttributes(dc->dpy, dc->gc, 1, LineSolid, CapButt, JoinMiter);
- if(!dc->font.set)
- XSetFont(dc->dpy, dc->gc, dc->font.xfont->fid);
+ /* shorten text if necessary */
+ for(mn = MIN(n, sizeof buf); textnw(dc, text, mn) + dc->font.height/2 > dc->w; mn--)
+ if(mn == 0)
+ return;
+ memcpy(buf, text, mn);
+ if(mn < n)
+ for(n = MAX(mn-3, 0); n < mn; buf[n++] = '.');
+
+ drawrect(dc, 0, 0, dc->w, dc->h, True, BG(dc, col));
+ drawtextn(dc, buf, mn, col);
}
void
-drawtext(DC *dc, 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(dc->dpy, dc->gc, col[ColBG]);
- XFillRectangles(dc->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(dc, 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(dc->dpy, dc->gc, col[ColFG]);
+drawtextn(DC *dc, const char *text, size_t n, unsigned long col[ColLast]) {
+ int x = dc->x + dc->font.height/2;
+ int y = dc->y + dc->font.ascent+1;
+
+ XSetForeground(dc->dpy, dc->gc, FG(dc, col));
if(dc->font.set)
- XmbDrawString(dc->dpy, dc->drawable, dc->font.set, dc->gc, x, y, buf, len);
- else
- XDrawString(dc->dpy, dc->drawable, dc->gc, x, y, buf, len);
+ XmbDrawString(dc->dpy, dc->canvas, dc->font.set, dc->gc, x, y, text, n);
+ else {
+ XSetFont(dc->dpy, dc->gc, dc->font.xfont->fid);
+ XDrawString(dc->dpy, dc->canvas, dc->gc, x, y, text, n);
+ }
}
void
-eprint(const char *fmt, ...) {
+eprintf(const char *fmt, ...) {
va_list ap;
- fprintf(stderr, "%s: ", progname);
va_start(ap, fmt);
vfprintf(stderr, fmt, ap);
va_end(ap);
+
+ if(fmt[0] != '\0' && fmt[strlen(fmt)-1] == ':') {
+ fputc(' ', stderr);
+ perror(NULL);
+ }
exit(EXIT_FAILURE);
}
+void
+freedc(DC *dc) {
+ if(dc->font.set)
+ XFreeFontSet(dc->dpy, dc->font.set);
+ if(dc->font.xfont)
+ XFreeFont(dc->dpy, dc->font.xfont);
+ if(dc->canvas)
+ XFreePixmap(dc->dpy, dc->canvas);
+ XFreeGC(dc->dpy, dc->gc);
+ XCloseDisplay(dc->dpy);
+ free(dc);
+}
+
unsigned long
getcolor(DC *dc, const char *colstr) {
Colormap cmap = DefaultColormap(dc->dpy, DefaultScreen(dc->dpy));
XColor color;
if(!XAllocNamedColor(dc->dpy, cmap, colstr, &color, &color))
- eprint("cannot allocate color '%s'\n", colstr);
+ eprintf("cannot allocate color '%s'\n", colstr);
return color.pixel;
}
+DC *
+initdc(void) {
+ DC *dc;
+
+ if(!setlocale(LC_CTYPE, "") || !XSupportsLocale())
+ fprintf(stderr, "no locale support\n");
+ if(!(dc = calloc(1, sizeof *dc)))
+ eprintf("cannot malloc %u bytes:", sizeof *dc);
+ if(!(dc->dpy = XOpenDisplay(NULL)))
+ eprintf("cannot open display\n");
+
+ dc->gc = XCreateGC(dc->dpy, DefaultRootWindow(dc->dpy), 0, NULL);
+ XSetLineAttributes(dc->dpy, dc->gc, 1, LineSolid, CapButt, JoinMiter);
+ return dc;
+}
+
void
initfont(DC *dc, const char *fontstr) {
- char *def, **missing = NULL;
+ if(!loadfont(dc, fontstr ? fontstr : DEFAULTFN)) {
+ if(fontstr != NULL)
+ fprintf(stderr, "cannot load font '%s'\n", fontstr);
+ if(fontstr == NULL || !loadfont(dc, DEFAULTFN))
+ eprintf("cannot load font '%s'\n", DEFAULTFN);
+ }
+ dc->font.height = dc->font.ascent + dc->font.descent;
+}
+
+Bool
+loadfont(DC *dc, const char *fontstr) {
+ char *def, **missing;
int i, n;
- if(!fontstr || !*fontstr)
- eprint("cannot load null font\n");
- dc->font.set = XCreateFontSet(dc->dpy, fontstr, &missing, &n, &def);
- if(missing)
- XFreeStringList(missing);
- if(dc->font.set) {
+ if(!*fontstr)
+ return False;
+ if((dc->font.set = XCreateFontSet(dc->dpy, fontstr, &missing, &n, &def))) {
+ char **names;
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++;
+
+ n = XFontsOfFontSet(dc->font.set, &xfonts, &names);
+ for(i = dc->font.ascent = dc->font.descent = 0; i < n; i++) {
+ dc->font.ascent = MAX(dc->font.ascent, xfonts[i]->ascent);
+ dc->font.descent = MAX(dc->font.descent, xfonts[i]->descent);
}
}
- else {
- if(!(dc->font.xfont = XLoadQueryFont(dc->dpy, fontstr))
- && !(dc->font.xfont = XLoadQueryFont(dc->dpy, "fixed")))
- eprint("cannot load font '%s'\n", fontstr);
+ else if((dc->font.xfont = XLoadQueryFont(dc->dpy, fontstr))) {
dc->font.ascent = dc->font.xfont->ascent;
dc->font.descent = dc->font.xfont->descent;
}
- dc->font.height = dc->font.ascent + dc->font.descent;
+ if(missing)
+ XFreeStringList(missing);
+ return (dc->font.set || dc->font.xfont);
}
-int
-textnw(DC *dc, const char *text, unsigned int len) {
- XRectangle r;
+void
+mapdc(DC *dc, Window win, unsigned int w, unsigned int h) {
+ XCopyArea(dc->dpy, dc->canvas, win, dc->gc, 0, 0, w, h, 0, 0);
+}
+
+void
+resizedc(DC *dc, unsigned int w, unsigned int h) {
+ if(dc->canvas)
+ XFreePixmap(dc->dpy, dc->canvas);
+
+ dc->canvas = XCreatePixmap(dc->dpy, DefaultRootWindow(dc->dpy), w, h,
+ DefaultDepth(dc->dpy, DefaultScreen(dc->dpy)));
+ dc->w = w;
+ dc->h = h;
+}
+int
+textnw(DC *dc, const char *text, size_t len) {
if(dc->font.set) {
+ XRectangle r;
+
XmbTextExtents(dc->font.set, text, len, NULL, &r);
return r.width;
}