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 void
  13 drawborder(void)
  14 {
  15         XPoint points[5];
  16
  17         XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
  18         XSetForeground(dpy, dc.gc, dc.border);
  19         points[0].x = dc.x;
  20         points[0].y = dc.y;
  21         points[1].x = dc.w - 1;
  22         points[1].y = 0;
  23         points[2].x = 0;
  24         points[2].y = dc.h - 1;
  25         points[3].x = -(dc.w - 1);
  26         points[3].y = 0;
  27         points[4].x = 0;
  28         points[4].y = -(dc.h - 1);
  29         XDrawLines(dpy, dc.drawable, dc.gc, points, 5, CoordModePrevious);
  30 }
  31
  32 static unsigned int
  33 textnw(const char *text, unsigned int len)
  34 {
  35         XRectangle r;
  36
  37         if(dc.font.set) {
  38                 XmbTextExtents(dc.font.set, text, len, NULL, &r);
  39                 return r.width;
  40         }
  41         return XTextWidth(dc.font.xfont, text, len);
  42 }
  43
  44 static void
  45 drawtext(const char *text, Bool invert, Bool border)
  46 {
  47         int x, y, w, h;
  48         static char buf[256];
  49         unsigned int len;
  50         XGCValues gcv;
  51         XRectangle r = { dc.x, dc.y, dc.w, dc.h };
  52
  53         XSetForeground(dpy, dc.gc, invert ? dc.fg : dc.bg);
  54         XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
  55
  56         w = 0;
  57         if(border)
  58                 drawborder();
  59
  60         if(!text)
  61                 return;
  62
  63         len = strlen(text);
  64         if(len >= sizeof(buf))
  65                 len = sizeof(buf) - 1;
  66         memcpy(buf, text, len);
  67         buf[len] = 0;
  68
  69         h = dc.font.ascent + dc.font.descent;
  70         y = dc.y + (dc.h / 2) - (h / 2) + dc.font.ascent;
  71         x = dc.x + (h / 2);
  72
  73         /* shorten text if necessary */
  74         while(len && (w = textnw(buf, len)) > dc.w - h)
  75                 buf[--len] = 0;
  76
  77         if(w > dc.w)
  78                 return; /* too long */
  79
  80         gcv.foreground = invert ? dc.bg : dc.fg;
  81         gcv.background = invert ? dc.fg : dc.bg;
  82         if(dc.font.set) {
  83                 XChangeGC(dpy, dc.gc, GCForeground | GCBackground, &gcv);
  84                 XmbDrawImageString(dpy, dc.drawable, dc.font.set, dc.gc,
  85                                 x, y, buf, len);
  86         }
  87         else {
  88                 gcv.font = dc.font.xfont->fid;
  89                 XChangeGC(dpy, dc.gc, GCForeground | GCBackground | GCFont, &gcv);
  90                 XDrawImageString(dpy, dc.drawable, dc.gc, x, y, buf, len);
  91         }
  92 }
  93
  94 /* extern */
  95
  96 void
  97 drawall()
  98 {
  99         Client *c;
 100
 101         for(c = clients; c; c = getnext(c->next))
 102                 drawtitle(c);
 103         drawstatus();
 104 }
 105
 106 void
 107 drawstatus()
 108 {
 109         int i, x;
 110         Bool istile = arrange == dotile;
 111
 112         dc.x = dc.y = 0;
 113         dc.w = bw;
 114         drawtext(NULL, !istile, False);
 115
 116         dc.w = 0;
 117         for(i = 0; i < ntags; i++) {
 118                 dc.x += dc.w;
 119                 dc.w = textw(tags[i]);
 120                 if(istile)
 121                         drawtext(tags[i], (i == tsel), True);
 122                 else
 123                         drawtext(tags[i], (i != tsel), True);
 124         }
 125         x = dc.x + dc.w;
 126         dc.w = textw(stext);
 127         dc.x = bx + bw - dc.w;
 128         drawtext(stext, !istile, True);
 129         if(sel && ((dc.w = dc.x - x) >= bh)) {
 130                 dc.x = x;
 131                 drawtext(sel->name, istile, True);
 132         }
 133         XCopyArea(dpy, dc.drawable, barwin, dc.gc, 0, 0, bw, bh, 0, 0);
 134         XSync(dpy, False);
 135 }
 136
 137 void
 138 drawtitle(Client *c)
 139 {
 140         int i;
 141         Bool istile = arrange == dotile;
 142
 143         if(c == sel) {
 144                 drawstatus();
 145                 XUnmapWindow(dpy, c->title);
 146                 XSetWindowBorder(dpy, c->win, dc.fg);
 147                 return;
 148         }
 149
 150         XSetWindowBorder(dpy, c->win, dc.bg);
 151         XMapWindow(dpy, c->title);
 152
 153         dc.x = dc.y = 0;
 154
 155         dc.w = 0;
 156         for(i = 0; i < ntags; i++) {
 157                 if(c->tags[i]) {
 158                         dc.x += dc.w;
 159                         dc.w = textw(tags[i]);
 160                         drawtext(tags[i], !istile, True);
 161                 }
 162         }
 163         dc.x += dc.w;
 164         dc.w = textw(c->name);
 165         drawtext(c->name, !istile, True);
 166         XCopyArea(dpy, dc.drawable, c->title, dc.gc, 0, 0, c->tw, c->th, 0, 0);
 167         XSync(dpy, False);
 168 }
 169
 170 unsigned long
 171 getcolor(const char *colstr)
 172 {
 173         Colormap cmap = DefaultColormap(dpy, screen);
 174         XColor color;
 175
 176         XAllocNamedColor(dpy, cmap, colstr, &color, &color);
 177         return color.pixel;
 178 }
 179
 180 void
 181 setfont(const char *fontstr)
 182 {
 183         char **missing, *def;
 184         int i, n;
 185
 186         missing = NULL;
 187         setlocale(LC_ALL, "");
 188         if(dc.font.set)
 189                 XFreeFontSet(dpy, dc.font.set);
 190         dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
 191         if(missing) {
 192                 while(n--)
 193                         fprintf(stderr, "missing fontset: %s\n", missing[n]);
 194                 XFreeStringList(missing);
 195                 if(dc.font.set) {
 196                         XFreeFontSet(dpy, dc.font.set);
 197                         dc.font.set = NULL;
 198                 }
 199         }
 200         if(dc.font.set) {
 201                 XFontSetExtents *font_extents;
 202                 XFontStruct **xfonts;
 203                 char **font_names;
 204
 205                 dc.font.ascent = dc.font.descent = 0;
 206                 font_extents = XExtentsOfFontSet(dc.font.set);
 207                 n = XFontsOfFontSet(dc.font.set, &xfonts, &font_names);
 208                 for(i = 0, dc.font.ascent = 0, dc.font.descent = 0; i < n; i++) {
 209                         if(dc.font.ascent < (*xfonts)->ascent)
 210                                 dc.font.ascent = (*xfonts)->ascent;
 211                         if(dc.font.descent < (*xfonts)->descent)
 212                                 dc.font.descent = (*xfonts)->descent;
 213                         xfonts++;
 214                 }
 215         }
 216         else {
 217                 if(dc.font.xfont)
 218                         XFreeFont(dpy, dc.font.xfont);
 219                 dc.font.xfont = NULL;
 220                 dc.font.xfont = XLoadQueryFont(dpy, fontstr);
 221                 if (!dc.font.xfont)
 222                         dc.font.xfont = XLoadQueryFont(dpy, "fixed");
 223                 if (!dc.font.xfont)
 224                         eprint("error, cannot init 'fixed' font\n");
 225                 dc.font.ascent = dc.font.xfont->ascent;
 226                 dc.font.descent = dc.font.xfont->descent;
 227         }
 228         dc.font.height = dc.font.ascent + dc.font.descent;
 229 }
 230
 231 unsigned int
 232 textw(const char *text)
 233 {
 234         return textnw(text, strlen(text)) + dc.font.height;
 235 }