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