draw.c
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/* (C)opyright MMIV-MMVI Anselm R. Garbe <garbeam at gmail dot com>
* See LICENSE file for license details.
*/
#include "dwm.h"
#include <locale.h>
#include <stdio.h>
#include <string.h>
/* static */
static Bool
isoccupied(unsigned int t)
{
Client *c;
for(c = clients; c; c = c->next)
if(c->tags[t])
return True;
return False;
}
static unsigned int
textnw(const char *text, unsigned int len) {
XRectangle r;
if(dc.font.set) {
XmbTextExtents(dc.font.set, text, len, NULL, &r);
return r.width;
}
return XTextWidth(dc.font.xfont, text, len);
}
static void
drawtext(const char *text, unsigned long col[ColLast], Bool filledsquare, Bool emptysquare) {
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 };
XPoint pt[5];
XSetForeground(dpy, dc.gc, col[ColBG]);
XFillRectangles(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);
/* 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);
}
x = (h + 2) / 4;
if(filledsquare) {
r.x = dc.x + 1;
r.y = dc.y + 1;
r.width = r.height = x + 1;
XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
}
else if(emptysquare) {
pt[0].x = dc.x + 1;
pt[0].y = dc.y + 1;
pt[1].x = x;
pt[1].y = 0;
pt[2].x = 0;
pt[2].y = x;
pt[3].x = -x;
pt[3].y = 0;
pt[4].x = 0;
pt[4].y = -x;
XDrawLines(dpy, dc.drawable, dc.gc, pt, 5, CoordModePrevious);
}
}
/* extern */
void
drawall(void) {
Client *c;
for(c = clients; c; c = getnext(c->next))
drawtitle(c);
drawstatus();
}
void
drawstatus(void) {
int i, x;
dc.x = dc.y = 0;
for(i = 0; i < ntags; i++) {
dc.w = textw(tags[i]);
if(seltag[i])
drawtext(tags[i], dc.sel, sel && sel->tags[i], isoccupied(i));
else
drawtext(tags[i], dc.norm, sel && sel->tags[i], isoccupied(i));
dc.x += dc.w;
}
dc.w = bmw;
drawtext(arrange == dofloat ? FLOATSYMBOL : TILESYMBOL, dc.status, False, False);
x = dc.x + dc.w;
dc.w = textw(stext);
dc.x = bw - dc.w;
if(dc.x < x) {
dc.x = x;
dc.w = bw - x;
}
drawtext(stext, dc.status, False, False);
if((dc.w = dc.x - x) > bh) {
dc.x = x;
drawtext(sel ? sel->name : NULL, sel ? dc.sel : dc.norm, False, False);
}
XCopyArea(dpy, dc.drawable, barwin, dc.gc, 0, 0, bw, bh, 0, 0);
XSync(dpy, False);
}
void
drawtitle(Client *c) {
if(c == sel && issel) {
drawstatus();
XUnmapWindow(dpy, c->twin);
XSetWindowBorder(dpy, c->win, dc.sel[ColBG]);
return;
}
XSetWindowBorder(dpy, c->win, dc.norm[ColBG]);
XMapWindow(dpy, c->twin);
dc.x = dc.y = 0;
dc.w = c->tw;
drawtext(c->name, dc.norm, False,False);
XCopyArea(dpy, dc.drawable, c->twin, dc.gc, 0, 0, c->tw, c->th, 0, 0);
XSync(dpy, False);
}
unsigned long
getcolor(const char *colstr) {
Colormap cmap = DefaultColormap(dpy, screen);
XColor color;
if(!XAllocNamedColor(dpy, cmap, colstr, &color, &color))
eprint("error, cannot allocate color '%s'\n", colstr);
return color.pixel;
}
void
setfont(const char *fontstr) {
char *def, *lc, **missing;
int i, n;
lc = setlocale(LC_CTYPE, NULL);
setlocale(LC_CTYPE, "UTF-8");
missing = NULL;
if(dc.font.set)
XFreeFontSet(dpy, dc.font.set);
dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
setlocale(LC_CTYPE, lc);
if(missing) {
while(n--)
fprintf(stderr, "missing fontset: %s\n", missing[n]);
XFreeStringList(missing);
}
if(dc.font.set) {
XFontSetExtents *font_extents;
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;
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;
}
dc.font.height = dc.font.ascent + dc.font.descent;
}
unsigned int
textw(const char *text) {
return textnw(text, strlen(text)) + dc.font.height;
}