diff options
Diffstat (limited to 'draw.c')
| -rw-r--r-- | draw.c | 171 |
1 files changed, 171 insertions, 0 deletions
@@ -0,0 +1,171 @@ +/* + * (C)opyright MMIV-MMVI Anselm R. Garbe <garbeam at gmail dot com> + * See LICENSE file for license details. + */ + +#include <stdio.h> +#include <string.h> + +#include "dmenu.h" + +static void +drawborder(Display *dpy, Brush *b) +{ + XPoint points[5]; + XSetLineAttributes(dpy, b->gc, 1, LineSolid, CapButt, JoinMiter); + XSetForeground(dpy, b->gc, b->border); + points[0].x = b->x; + points[0].y = b->y; + points[1].x = b->w - 1; + points[1].y = 0; + points[2].x = 0; + points[2].y = b->h - 1; + points[3].x = -(b->w - 1); + points[3].y = 0; + points[4].x = 0; + points[4].y = -(b->h - 1); + XDrawLines(dpy, b->drawable, b->gc, points, 5, CoordModePrevious); +} + +void +draw(Display *dpy, Brush *b, Bool border, const char *text) +{ + unsigned int x, y, w, h, len; + static char buf[256]; + XGCValues gcv; + XRectangle r = { b->x, b->y, b->w, b->h }; + + XSetForeground(dpy, b->gc, b->bg); + XFillRectangles(dpy, b->drawable, b->gc, &r, 1); + + w = 0; + if(border) + drawborder(dpy, b); + + if(!text) + return; + + len = strlen(text); + if(len >= sizeof(buf)) + len = sizeof(buf) - 1; + memcpy(buf, text, len); + buf[len] = 0; + + h = b->font.ascent + b->font.descent; + y = b->y + (b->h / 2) - (h / 2) + b->font.ascent; + x = b->x + (h / 2); + + /* shorten text if necessary */ + while(len && (w = textnw(&b->font, buf, len)) > b->w - h) + buf[--len] = 0; + + if(w > b->w) + return; /* too long */ + + gcv.foreground = b->fg; + gcv.background = b->bg; + if(b->font.set) { + XChangeGC(dpy, b->gc, GCForeground | GCBackground, &gcv); + XmbDrawImageString(dpy, b->drawable, b->font.set, b->gc, + x, y, buf, len); + } + else { + gcv.font = b->font.xfont->fid; + XChangeGC(dpy, b->gc, GCForeground | GCBackground | GCFont, &gcv); + XDrawImageString(dpy, b->drawable, b->gc, x, y, buf, len); + } +} + +static unsigned long +xloadcolors(Display *dpy, Colormap cmap, const char *colstr) +{ + XColor color; + XAllocNamedColor(dpy, cmap, colstr, &color, &color); + return color.pixel; +} + +void +loadcolors(Display *dpy, int screen, Brush *b, + const char *bg, const char *fg, const char *border) +{ + Colormap cmap = DefaultColormap(dpy, screen); + b->bg = xloadcolors(dpy, cmap, bg); + b->fg = xloadcolors(dpy, cmap, fg); + b->border = xloadcolors(dpy, cmap, border); +} + +unsigned int +textnw(Fnt *font, char *text, unsigned int len) +{ + XRectangle r; + if(font->set) { + XmbTextExtents(font->set, text, len, NULL, &r); + return r.width; + } + return XTextWidth(font->xfont, text, len); +} + +unsigned int +textw(Fnt *font, char *text) +{ + return textnw(font, text, strlen(text)); +} + +unsigned int +texth(Fnt *font) +{ + return font->height + 4; +} + +void +loadfont(Display *dpy, Fnt *font, const char *fontstr) +{ + char **missing, *def; + int n; + + missing = NULL; + def = "?"; + setlocale(LC_ALL, ""); + if(font->set) + XFreeFontSet(dpy, font->set); + font->set = XCreateFontSet(dpy, fontstr, &missing, &n, &def); + if(missing) { + while(n--) + fprintf(stderr, "missing fontset: %s\n", missing[n]); + XFreeStringList(missing); + if(font->set) { + XFreeFontSet(dpy, font->set); + font->set = NULL; + } + } + if(font->set) { + XFontSetExtents *font_extents; + XFontStruct **xfonts; + char **font_names; + unsigned int i; + + font->ascent = font->descent = 0; + font_extents = XExtentsOfFontSet(font->set); + n = XFontsOfFontSet(font->set, &xfonts, &font_names); + for(i = 0, font->ascent = 0, font->descent = 0; i < n; i++) { + if(font->ascent < (*xfonts)->ascent) + font->ascent = (*xfonts)->ascent; + if(font->descent < (*xfonts)->descent) + font->descent = (*xfonts)->descent; + xfonts++; + } + } + else { + if(font->xfont) + XFreeFont(dpy, font->xfont); + font->xfont = NULL; + font->xfont = XLoadQueryFont(dpy, fontstr); + if (!font->xfont) + font->xfont = XLoadQueryFont(dpy, "fixed"); + if (!font->xfont) + eprint("error, cannot load 'fixed' font\n"); + font->ascent = font->xfont->ascent; + font->descent = font->xfont->descent; + } + font->height = font->ascent + font->descent; +} |