draw.c

   1 /*
   2  * (C)opyright MMIV-MMVI Anselm R. Garbe <garbeam at gmail dot com>
   3  * See LICENSE file for license details.
   4  */
   5 #include "dwm.h"
   6 #include <stdio.h>
   7 #include <string.h>
   8 #include <X11/Xlocale.h>
   9
  10 /* static */
  11
  12 static unsigned int
  13 textnw(const char *text, unsigned int len)
  14 {
  15         XRectangle r;
  16
  17         if(dc.font.set) {
  18                 XmbTextExtents(dc.font.set, text, len, NULL, &r);
  19                 return r.width;
  20         }
  21         return XTextWidth(dc.font.xfont, text, len);
  22 }
  23
  24 static void
  25 drawtext(const char *text, Bool invert)
  26 {
  27         int x, y, w, h;
  28         static char buf[256];
  29         unsigned int len;
  30         XGCValues gcv;
  31         XPoint points[5];
  32         XRectangle r = { dc.x, dc.y, dc.w, dc.h };
  33
  34         XSetForeground(dpy, dc.gc, invert ? dc.fg : dc.bg);
  35         XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
  36         if(!text)
  37                 return;
  38
  39         w = 0;
  40         len = strlen(text);
  41         if(len >= sizeof(buf))
  42                 len = sizeof(buf) - 1;
  43         memcpy(buf, text, len);
  44         buf[len] = 0;
  45
  46         h = dc.font.ascent + dc.font.descent;
  47         y = dc.y + (dc.h / 2) - (h / 2) + dc.font.ascent;
  48         x = dc.x + (h / 2);
  49
  50         /* shorten text if necessary */
  51         while(len && (w = textnw(buf, len)) > dc.w - h)
  52                 buf[--len] = 0;
  53
  54         if(w > dc.w)
  55                 return; /* too long */
  56
  57         gcv.foreground = invert ? dc.bg : dc.fg;
  58         gcv.background = invert ? dc.fg : dc.bg;
  59         if(dc.font.set) {
  60                 XChangeGC(dpy, dc.gc, GCForeground | GCBackground, &gcv);
  61                 XmbDrawImageString(dpy, dc.drawable, dc.font.set, dc.gc,
  62                                 x, y, buf, len);
  63         }
  64         else {
  65                 gcv.font = dc.font.xfont->fid;
  66                 XChangeGC(dpy, dc.gc, GCForeground | GCBackground | GCFont, &gcv);
  67                 XDrawImageString(dpy, dc.drawable, dc.gc, x, y, buf, len);
  68         }
  69
  70         XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
  71         points[0].x = dc.x;
  72         points[0].y = dc.y;
  73         points[1].x = dc.w - 1;
  74         points[1].y = 0;
  75         points[2].x = 0;
  76         points[2].y = dc.h - 1;
  77         points[3].x = -(dc.w - 1);
  78         points[3].y = 0;
  79         points[4].x = 0;
  80         points[4].y = -(dc.h - 1);
  81         XDrawLines(dpy, dc.drawable, dc.gc, points, 5, CoordModePrevious);
  82 }
  83
  84 /* extern */
  85
  86 void
  87 drawall()
  88 {
  89         Client *c;
  90
  91         for(c = clients; c; c = getnext(c->next))
  92                 drawtitle(c);
  93         drawstatus();
  94 }
  95
  96 void
  97 drawstatus()
  98 {
  99         int i, x;
 100         Bool istile = arrange == dotile;
 101
 102         dc.x = dc.y = 0;
 103         dc.w = bw;
 104         drawtext(NULL, !istile);
 105
 106         dc.w = 0;
 107         for(i = 0; i < ntags; i++) {
 108                 dc.x += dc.w;
 109                 dc.w = textw(tags[i]);
 110                 if(istile)
 111                         drawtext(tags[i], (i == tsel));
 112                 else
 113                         drawtext(tags[i], (i != tsel));
 114         }
 115         x = dc.x + dc.w;
 116         dc.w = textw(stext);
 117         dc.x = bx + bw - dc.w;
 118         drawtext(stext, !istile);
 119         if(sel && ((dc.w = dc.x - x) >= bh)) {
 120                 dc.x = x;
 121                 drawtext(sel->name, istile);
 122         }
 123         XCopyArea(dpy, dc.drawable, barwin, dc.gc, 0, 0, bw, bh, 0, 0);
 124         XSync(dpy, False);
 125 }
 126
 127 void
 128 drawtitle(Client *c)
 129 {
 130         int i;
 131         Bool istile = arrange == dotile;
 132
 133         if(c == sel) {
 134                 drawstatus();
 135                 XUnmapWindow(dpy, c->title);
 136                 XSetWindowBorder(dpy, c->win, dc.fg);
 137                 return;
 138         }
 139
 140         XSetWindowBorder(dpy, c->win, dc.bg);
 141         XMapWindow(dpy, c->title);
 142
 143         dc.x = dc.y = 0;
 144
 145         dc.w = 0;
 146         for(i = 0; i < ntags; i++) {
 147                 if(c->tags[i]) {
 148                         dc.x += dc.w;
 149                         dc.w = textw(tags[i]);
 150                         drawtext(tags[i], !istile);
 151                 }
 152         }
 153         dc.x += dc.w;
 154         dc.w = textw(c->name);
 155         drawtext(c->name, !istile);
 156         XCopyArea(dpy, dc.drawable, c->title, dc.gc, 0, 0, c->tw, c->th, 0, 0);
 157         XSync(dpy, False);
 158 }
 159
 160 unsigned long
 161 getcolor(const char *colstr)
 162 {
 163         Colormap cmap = DefaultColormap(dpy, screen);
 164         XColor color;
 165
 166         XAllocNamedColor(dpy, cmap, colstr, &color, &color);
 167         return color.pixel;
 168 }
 169
 170 void
 171 setfont(const char *fontstr)
 172 {
 173         char **missing, *def;
 174         int i, n;
 175
 176         missing = NULL;
 177         setlocale(LC_ALL, "");
 178         if(dc.font.set)
 179                 XFreeFontSet(dpy, dc.font.set);
 180         dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
 181         if(missing) {
 182                 while(n--)
 183                         fprintf(stderr, "missing fontset: %s\n", missing[n]);
 184                 XFreeStringList(missing);
 185                 if(dc.font.set) {
 186                         XFreeFontSet(dpy, dc.font.set);
 187                         dc.font.set = NULL;
 188                 }
 189         }
 190         if(dc.font.set) {
 191                 XFontSetExtents *font_extents;
 192                 XFontStruct **xfonts;
 193                 char **font_names;
 194
 195                 dc.font.ascent = dc.font.descent = 0;
 196                 font_extents = XExtentsOfFontSet(dc.font.set);
 197                 n = XFontsOfFontSet(dc.font.set, &xfonts, &font_names);
 198                 for(i = 0, dc.font.ascent = 0, dc.font.descent = 0; i < n; i++) {
 199                         if(dc.font.ascent < (*xfonts)->ascent)
 200                                 dc.font.ascent = (*xfonts)->ascent;
 201                         if(dc.font.descent < (*xfonts)->descent)
 202                                 dc.font.descent = (*xfonts)->descent;
 203                         xfonts++;
 204                 }
 205         }
 206         else {
 207                 if(dc.font.xfont)
 208                         XFreeFont(dpy, dc.font.xfont);
 209                 dc.font.xfont = NULL;
 210                 dc.font.xfont = XLoadQueryFont(dpy, fontstr);
 211                 if (!dc.font.xfont)
 212                         dc.font.xfont = XLoadQueryFont(dpy, "fixed");
 213                 if (!dc.font.xfont)
 214                         eprint("error, cannot init 'fixed' font\n");
 215                 dc.font.ascent = dc.font.xfont->ascent;
 216                 dc.font.descent = dc.font.xfont->descent;
 217         }
 218         dc.font.height = dc.font.ascent + dc.font.descent;
 219 }
 220
 221 unsigned int
 222 textw(const char *text)
 223 {
 224         return textnw(text, strlen(text)) + dc.font.height;
 225 }