diff options
Diffstat (limited to 'draw.c')
| -rw-r--r-- | draw.c | 163 |
1 files changed, 163 insertions, 0 deletions
@@ -0,0 +1,163 @@ +/* + * (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 "draw.h" +#include "util.h" + +static void +drawborder(Display *dpy, Brush *b) +{ + XPoint points[5]; + XSetLineAttributes(dpy, b->gc, 1, LineSolid, CapButt, JoinMiter); + XSetForeground(dpy, b->gc, b->color.border); + points[0].x = b->rect.x; + points[0].y = b->rect.y; + points[1].x = b->rect.width - 1; + points[1].y = 0; + points[2].x = 0; + points[2].y = b->rect.height - 1; + points[3].x = -(b->rect.width - 1); + points[3].y = 0; + points[4].x = 0; + points[4].y = -(b->rect.height - 1); + XDrawLines(dpy, b->drawable, b->gc, points, 5, CoordModePrevious); +} + +void +draw(Display *dpy, Brush *b) +{ + unsigned int x, y, w, h, len; + static char buf[256]; + XGCValues gcv; + + XSetForeground(dpy, b->gc, b->color.bg); + XFillRectangles(dpy, b->drawable, b->gc, &b->rect, 1); + + if(b->border) + drawborder(dpy, b); + + if(!b->text) + return; + + len = strlen(b->text); + if(len >= sizeof(buf)) + len = sizeof(buf) - 1; + memcpy(buf, b->text, len); + buf[len] = 0; + + h = b->font->ascent + b->font->descent; + y = b->rect.y + (b->rect.height / 2) - (h / 2) + b->font->ascent; + x = b->rect.x + (h / 2); + + /* shorten text if necessary */ + while(len && (w = textwidth_l(b->font, buf, len)) > b->rect.width - h) + buf[--len] = 0; + + if(w > b->rect.width) + return; /* too long */ + + gcv.foreground = b->color.fg; + gcv.background = b->color.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 +xloadcolor(Display *dpy, Colormap cmap, const char *colstr) +{ + XColor color; + XAllocNamedColor(dpy, cmap, colstr, &color, &color); + return color.pixel; +} + +void +loadcolor(Display *dpy, int screen, Color *c, + const char *bg, const char *fg, const char *border) +{ + Colormap cmap = DefaultColormap(dpy, screen); + c->bg = xloadcolor(dpy, cmap, bg); + c->fg = xloadcolor(dpy, cmap, fg); + c->border = xloadcolor(dpy, cmap, border); +} + +unsigned int +textwidth_l(Fnt *font, char *text, unsigned int len) +{ + if(font->set) { + XRectangle r; + XmbTextExtents(font->set, text, len, 0, &r); + return r.width; + } + return XTextWidth(font->xfont, text, len); +} + +unsigned int +textwidth(Fnt *font, char *text) +{ + return textwidth_l(font, text, strlen(text)); +} + +void +loadfont(Display *dpy, Fnt *font, const char *fontstr) +{ + char **missing, *def; + int n; + + missing = 0; + 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 = 0; + } + } + 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 = 0; + font->xfont = XLoadQueryFont(dpy, fontstr); + if (!font->xfont) + font->xfont = XLoadQueryFont(dpy, "fixed"); + if (!font->xfont) + error("error, cannot load 'fixed' font\n"); + font->ascent = font->xfont->ascent; + font->descent = font->xfont->descent; + } +} |