X-Git-Url: https://git.danieliu.xyz/?a=blobdiff_plain;f=draw.c;h=95ff072a9a0cee5329ba8066d05a11a6cd60a69e;hb=1654d6cd6269bc784ee99045edd89e4bda24149f;hp=9142905b8ecd20cf1a12f3321fe2552dabb50a95;hpb=96c65400ccdcb76cf20ec7721920f944e6b490ec;p=dmenu.git diff --git a/draw.c b/draw.c index 9142905..95ff072 100644 --- a/draw.c +++ b/draw.c @@ -1,129 +1,173 @@ /* See LICENSE file for copyright and license details. */ -#include #include #include #include #include #include -#include #include #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 DEFFONT "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); - else - XFreeFont(dc->dpy, dc->font.xfont); - XFreePixmap(dc->dpy, dc->drawable); - XFreeGC(dc->dpy, dc->gc); +drawrect(DC *dc, int x, int y, unsigned int w, unsigned int h, Bool fill, unsigned long color) { + XRectangle r = { dc->x + x, dc->y + y, w, h }; + + if(!fill) { + r.width -= 1; + r.height -= 1; + } + XSetForeground(dc->dpy, dc->gc, color); + (fill ? XFillRectangles : XDrawRectangles)(dc->dpy, dc->canvas, dc->gc, &r, 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[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 : DEFFONT)) { + if(fontstr != NULL) + fprintf(stderr, "cannot load font '%s'\n", fontstr); + if(fontstr == NULL || !loadfont(dc, DEFFONT)) + eprintf("cannot load font '%s'\n", DEFFONT); + } + 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; }