X-Git-Url: https://git.danieliu.xyz/?a=blobdiff_plain;f=draw.c;h=9142905b8ecd20cf1a12f3321fe2552dabb50a95;hb=723361fa124aa666d637e3fc9f5df1210a9e02b4;hp=bd11091e97d283f50ddd726538ad2d666b7e3de3;hpb=c69f397bb9a2234173726e5703eee8c123afacb4;p=dmenu.git diff --git a/draw.c b/draw.c index bd11091..9142905 100644 --- a/draw.c +++ b/draw.c @@ -1,124 +1,136 @@ -/* (C)opyright MMIV-MMVI Anselm R. Garbe - * See LICENSE file for license details. - */ -#include "dmenu.h" +/* See LICENSE file for copyright and license details. */ +#include +#include +#include #include +#include #include +#include +#include +#include "draw.h" -/* static */ +/* macros */ +#define MIN(a, b) ((a) < (b) ? (a) : (b)) +#define MAX(a, b) ((a) > (b) ? (a) : (b)) -static unsigned int -textnw(const char *text, unsigned int len) { - XRectangle r; +/* variables */ +const char *progname; - if(dc.font.set) { - XmbTextExtents(dc.font.set, text, len, NULL, &r); - return r.width; - } - return XTextWidth(dc.font.xfont, text, len); +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); } -/* extern */ +void +setupdraw(DC *dc, Window w) { + XWindowAttributes wa; + + 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); +} void -drawtext(const char *text, unsigned long col[ColLast]) { - int x, y, w, h; - static char buf[256]; - unsigned int len, olen; - XGCValues gcv; - XRectangle r = { dc.x, dc.y, dc.w, dc.h }; - - XSetForeground(dpy, dc.gc, col[ColBG]); - XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1); +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; - w = 0; - olen = len = strlen(text); - if(len >= sizeof buf) - len = sizeof buf - 1; - memcpy(buf, text, len); - buf[len] = 0; - h = dc.font.ascent + dc.font.descent; - y = dc.y + (dc.h / 2) - (h / 2) + dc.font.ascent; - x = dc.x + (h / 2); + 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 */ - while(len && (w = textnw(buf, len)) > dc.w - h) - buf[--len] = 0; - if(len < olen) { - if(len > 1) - buf[len - 1] = '.'; - if(len > 2) - buf[len - 2] = '.'; - if(len > 3) - buf[len - 3] = '.'; - } - if(w > dc.w) - return; /* too long */ - gcv.foreground = col[ColFG]; - if(dc.font.set) { - XChangeGC(dpy, dc.gc, GCForeground, &gcv); - XmbDrawString(dpy, dc.drawable, dc.font.set, dc.gc, - x, y, buf, len); - } - else { - gcv.font = dc.font.xfont->fid; - XChangeGC(dpy, dc.gc, GCForeground | GCFont, &gcv); - XDrawString(dpy, dc.drawable, dc.gc, x, y, buf, len); - } + 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]); + 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); +} + +void +eprint(const char *fmt, ...) { + va_list ap; + + fprintf(stderr, "%s: ", progname); + va_start(ap, fmt); + vfprintf(stderr, fmt, ap); + va_end(ap); + exit(EXIT_FAILURE); } unsigned long -getcolor(const char *colstr) { - Colormap cmap = DefaultColormap(dpy, screen); +getcolor(DC *dc, const char *colstr) { + Colormap cmap = DefaultColormap(dc->dpy, DefaultScreen(dc->dpy)); XColor color; - if(!XAllocNamedColor(dpy, cmap, colstr, &color, &color)) - eprint("error, cannot allocate color '%s'\n", colstr); + if(!XAllocNamedColor(dc->dpy, cmap, colstr, &color, &color)) + eprint("cannot allocate color '%s'\n", colstr); return color.pixel; } void -setfont(const char *fontstr) { - char *def, **missing; +initfont(DC *dc, const char *fontstr) { + char *def, **missing = NULL; int i, n; - missing = NULL; - if(dc.font.set) - XFreeFontSet(dpy, dc.font.set); - dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def); + 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) { - XFontSetExtents *font_extents; + if(dc->font.set) { XFontStruct **xfonts; char **font_names; - dc.font.ascent = dc.font.descent = 0; - font_extents = XExtentsOfFontSet(dc.font.set); - n = XFontsOfFontSet(dc.font.set, &xfonts, &font_names); - for(i = 0, dc.font.ascent = 0, dc.font.descent = 0; i < n; i++) { - if(dc.font.ascent < (*xfonts)->ascent) - dc.font.ascent = (*xfonts)->ascent; - if(dc.font.descent < (*xfonts)->descent) - dc.font.descent = (*xfonts)->descent; + 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++; } } else { - if(dc.font.xfont) - XFreeFont(dpy, dc.font.xfont); - dc.font.xfont = NULL; - dc.font.xfont = XLoadQueryFont(dpy, fontstr); - if (!dc.font.xfont) - dc.font.xfont = XLoadQueryFont(dpy, "fixed"); - if (!dc.font.xfont) - eprint("error, cannot init 'fixed' font\n"); - dc.font.ascent = dc.font.xfont->ascent; - dc.font.descent = dc.font.xfont->descent; + if(!(dc->font.xfont = XLoadQueryFont(dc->dpy, fontstr)) + && !(dc->font.xfont = XLoadQueryFont(dc->dpy, "fixed"))) + eprint("cannot load font '%s'\n", fontstr); + dc->font.ascent = dc->font.xfont->ascent; + dc->font.descent = dc->font.xfont->descent; + } + dc->font.height = dc->font.ascent + dc->font.descent; +} + +int +textnw(DC *dc, const char *text, unsigned int len) { + XRectangle r; + + if(dc->font.set) { + XmbTextExtents(dc->font.set, text, len, NULL, &r); + return r.width; } - dc.font.height = dc.font.ascent + dc.font.descent; + return XTextWidth(dc->font.xfont, text, len); } -unsigned int -textw(const char *text) { - return textnw(text, strlen(text)) + dc.font.height; +int +textw(DC *dc, const char *text) { + return textnw(dc, text, strlen(text)) + dc->font.height; }