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 "dmenu.h"
#include <stdio.h>
#include <string.h>
#include <X11/Xlocale.h>
/* static */
static void
drawborder(void)
{
XPoint points[5];
XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
XSetForeground(dpy, dc.gc, dc.border);
points[0].x = dc.x;
points[0].y = dc.y;
points[1].x = dc.w - 1;
points[1].y = 0;
points[2].x = 0;
points[2].y = dc.h - 1;
points[3].x = -(dc.w - 1);
points[3].y = 0;
points[4].x = 0;
points[4].y = -(dc.h - 1);
XDrawLines(dpy, dc.drawable, dc.gc, points, 5, CoordModePrevious);
}
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);
}
/* extern */
void
drawtext(const char *text, Bool invert, Bool border)
{
int x, y, w, h;
static char buf[256];
unsigned int len;
XGCValues gcv;
XRectangle r = { dc.x, dc.y, dc.w, dc.h };
XSetForeground(dpy, dc.gc, invert ? dc.fg : dc.bg);
XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
w = 0;
if(border)
drawborder();
if(!text)
return;
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(w > dc.w)
return; /* too long */
gcv.foreground = invert ? dc.bg : dc.fg;
gcv.background = invert ? dc.fg : dc.bg;
if(dc.font.set) {
XChangeGC(dpy, dc.gc, GCForeground | GCBackground, &gcv);
XmbDrawImageString(dpy, dc.drawable, dc.font.set, dc.gc,
x, y, buf, len);
}
else {
gcv.font = dc.font.xfont->fid;
XChangeGC(dpy, dc.gc, GCForeground | GCBackground | GCFont, &gcv);
XDrawImageString(dpy, dc.drawable, dc.gc, x, y, buf, len);
}
}
unsigned long
getcolor(const char *colstr)
{
Colormap cmap = DefaultColormap(dpy, screen);
XColor color;
XAllocNamedColor(dpy, cmap, colstr, &color, &color);
return color.pixel;
}
void
setfont(const char *fontstr)
{
char **missing, *def;
int i, n;
missing = NULL;
setlocale(LC_ALL, "");
if(dc.font.set)
XFreeFontSet(dpy, dc.font.set);
dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
if(missing) {
XFreeStringList(missing);
if(dc.font.set) {
XFreeFontSet(dpy, dc.font.set);
dc.font.set = NULL;
}
}
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;
}