dwm/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"
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#include <stdio.h>
#include <string.h>
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#include <X11/Xlocale.h>
/* static */
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static unsigned int
textnw(const char *text, unsigned int len)
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{
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XRectangle r;
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if(dc.font.set) {
XmbTextExtents(dc.font.set, text, len, NULL, &r);
return r.width;
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}
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return XTextWidth(dc.font.xfont, text, len);
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}
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static void
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drawtext(const char *text, Bool invert)
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{
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int x, y, w, h;
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static char buf[256];
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unsigned int len;
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XGCValues gcv;
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XRectangle r = { dc.x, dc.y, dc.w, dc.h };
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XSetForeground(dpy, dc.gc, invert ? dc.fg : dc.bg);
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XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
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if(!text)
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return;
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w = 0;
len = strlen(text);
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if(len >= sizeof(buf))
len = sizeof(buf) - 1;
memcpy(buf, text, len);
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buf[len] = 0;
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h = dc.font.ascent + dc.font.descent;
y = dc.y + (dc.h / 2) - (h / 2) + dc.font.ascent;
x = dc.x + (h / 2);
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/* shorten text if necessary */
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while(len && (w = textnw(buf, len)) > dc.w - h)
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buf[--len] = 0;
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if(w > dc.w)
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return; /* too long */
gcv.foreground = invert ? dc.bg : dc.fg;
gcv.background = invert ? dc.fg : dc.bg;
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if(dc.font.set) {
XChangeGC(dpy, dc.gc, GCForeground | GCBackground, &gcv);
XmbDrawImageString(dpy, dc.drawable, dc.font.set, dc.gc,
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x, y, buf, len);
}
else {
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gcv.font = dc.font.xfont->fid;
XChangeGC(dpy, dc.gc, GCForeground | GCBackground | GCFont, &gcv);
XDrawImageString(dpy, dc.drawable, dc.gc, x, y, buf, len);
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}
}
/* extern */
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void
drawall()
{
Client *c;
for(c = clients; c; c = getnext(c->next))
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drawtitle(c);
drawstatus();
}
void
drawstatus()
{
int i, x;
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Bool istile = arrange == dotile;
dc.x = dc.y = 0;
dc.w = bw;
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drawtext(NULL, !istile);
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dc.w = 0;
for(i = 0; i < ntags; i++) {
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dc.x += dc.w;
dc.w = textw(tags[i]);
if(istile)
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drawtext(tags[i], (i == tsel));
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else
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drawtext(tags[i], (i != tsel));
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}
x = dc.x + dc.w;
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dc.w = textw(stext);
dc.x = bx + bw - dc.w;
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drawtext(stext, !istile);
if(sel && ((dc.w = dc.x - x) >= bh)) {
dc.x = x;
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drawtext(sel->name, istile);
}
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XCopyArea(dpy, dc.drawable, barwin, dc.gc, 0, 0, bw, bh, 0, 0);
XSync(dpy, False);
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}
void
drawtitle(Client *c)
{
int i;
Bool istile = arrange == dotile;
if(c == sel) {
drawstatus();
XUnmapWindow(dpy, c->title);
XSetWindowBorder(dpy, c->win, dc.fg);
return;
}
XSetWindowBorder(dpy, c->win, dc.bg);
XMapWindow(dpy, c->title);
dc.x = dc.y = 0;
dc.w = 0;
for(i = 0; i < ntags; i++) {
if(c->tags[i]) {
dc.x += dc.w;
dc.w = textw(tags[i]);
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drawtext(tags[i], !istile);
}
}
dc.x += dc.w;
dc.w = textw(c->name);
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drawtext(c->name, !istile);
XCopyArea(dpy, dc.drawable, c->title, dc.gc, 0, 0, c->tw, c->th, 0, 0);
XSync(dpy, False);
}
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unsigned long
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getcolor(const char *colstr)
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{
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Colormap cmap = DefaultColormap(dpy, screen);
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XColor color;
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XAllocNamedColor(dpy, cmap, colstr, &color, &color);
return color.pixel;
}
void
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setfont(const char *fontstr)
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{
char **missing, *def;
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int i, n;
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missing = NULL;
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setlocale(LC_ALL, "");
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if(dc.font.set)
XFreeFontSet(dpy, dc.font.set);
dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
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if(missing) {
while(n--)
fprintf(stderr, "missing fontset: %s\n", missing[n]);
XFreeStringList(missing);
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if(dc.font.set) {
XFreeFontSet(dpy, dc.font.set);
dc.font.set = NULL;
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}
}
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if(dc.font.set) {
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XFontSetExtents *font_extents;
XFontStruct **xfonts;
char **font_names;
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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;
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xfonts++;
}
}
else {
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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)
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eprint("error, cannot init 'fixed' font\n");
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dc.font.ascent = dc.font.xfont->ascent;
dc.font.descent = dc.font.xfont->descent;
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}
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dc.font.height = dc.font.ascent + dc.font.descent;
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}
unsigned int
textw(const char *text)
{
return textnw(text, strlen(text)) + dc.font.height;
}