diff options
Diffstat (limited to 'draw.c')
| -rw-r--r-- | draw.c | 176 |
1 files changed, 0 insertions, 176 deletions
@@ -1,176 +0,0 @@ -/* See LICENSE file for copyright and license details. */ -#include <locale.h> -#include <stdarg.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <X11/Xlib.h> -#include "draw.h" - -#define MAX(a, b) ((a) > (b) ? (a) : (b)) -#define MIN(a, b) ((a) < (b) ? (a) : (b)) -#define DEFAULTFN "fixed" - -static Bool loadfont(DC *dc, const char *fontstr); - -void -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 - XDrawRectangle(dc->dpy, dc->canvas, dc->gc, dc->x + x, dc->y + y, w-1, h-1); -} - -void -drawtext(DC *dc, const char *text, unsigned long col[ColLast]) { - char buf[BUFSIZ]; - size_t mn, n = strlen(text); - - /* 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 -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->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 -eprintf(const char *fmt, ...) { - va_list ap; - - 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)) - 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) { - 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, **names; - int i, n = 1; - XFontStruct **xfonts; - - if(!*fontstr) - return False; - if((dc->font.set = XCreateFontSet(dc->dpy, fontstr, &missing, &n, &def))) - n = XFontsOfFontSet(dc->font.set, &xfonts, &names); - else if((dc->font.xfont = XLoadQueryFont(dc->dpy, fontstr))) - xfonts = &dc->font.xfont; - else - n = 0; - - for(i = 0; i < n; i++) { - dc->font.ascent = MAX(dc->font.ascent, xfonts[i]->ascent); - dc->font.descent = MAX(dc->font.descent, xfonts[i]->descent); - dc->font.width = MAX(dc->font.width, xfonts[i]->max_bounds.width); - } - if(missing) - XFreeStringList(missing); - return (dc->font.set || dc->font.xfont); -} - -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; - } - return XTextWidth(dc->font.xfont, text, len); -} - -int -textw(DC *dc, const char *text) { - return textnw(dc, text, strlen(text)) + dc->font.height; -} |