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
   7 #include <stdio.h>
   8 #include <string.h>
   9 #include <X11/Xlocale.h>
  10
  11 /* static */
  12
  13 static void
  14 drawborder(void)
  15 {
  16         XPoint points[5];
  17
  18         XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
  19         XSetForeground(dpy, dc.gc, dc.border);
  20         points[0].x = dc.x;
  21         points[0].y = dc.y;
  22         points[1].x = dc.w - 1;
  23         points[1].y = 0;
  24         points[2].x = 0;
  25         points[2].y = dc.h - 1;
  26         points[3].x = -(dc.w - 1);
  27         points[3].y = 0;
  28         points[4].x = 0;
  29         points[4].y = -(dc.h - 1);
  30         XDrawLines(dpy, dc.drawable, dc.gc, points, 5, CoordModePrevious);
  31 }
  32
  33 static unsigned int
  34 textnw(char *text, unsigned int len)
  35 {
  36         XRectangle r;
  37
  38         if(dc.font.set) {
  39                 XmbTextExtents(dc.font.set, text, len, NULL, &r);
  40                 return r.width;
  41         }
  42         return XTextWidth(dc.font.xfont, text, len);
  43 }
  44
  45 static void
  46 drawtext(const char *text, Bool invert, Bool border)
  47 {
  48         int x, y, w, h;
  49         static char buf[256];
  50         unsigned int len;
  51         XGCValues gcv;
  52         XRectangle r = { dc.x, dc.y, dc.w, dc.h };
  53
  54         XSetForeground(dpy, dc.gc, invert ? dc.fg : dc.bg);
  55         XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
  56
  57         w = 0;
  58         if(border)
  59                 drawborder();
  60
  61         if(!text)
  62                 return;
  63
  64         len = strlen(text);
  65         if(len >= sizeof(buf))
  66                 len = sizeof(buf) - 1;
  67         memcpy(buf, text, len);
  68         buf[len] = 0;
  69
  70         h = dc.font.ascent + dc.font.descent;
  71         y = dc.y + (dc.h / 2) - (h / 2) + dc.font.ascent;
  72         x = dc.x + (h / 2);
  73
  74         /* shorten text if necessary */
  75         while(len && (w = textnw(buf, len)) > dc.w - h)
  76                 buf[--len] = 0;
  77
  78         if(w > dc.w)
  79                 return; /* too long */
  80
  81         gcv.foreground = invert ? dc.bg : dc.fg;
  82         gcv.background = invert ? dc.fg : dc.bg;
  83         if(dc.font.set) {
  84                 XChangeGC(dpy, dc.gc, GCForeground | GCBackground, &gcv);
  85                 XmbDrawImageString(dpy, dc.drawable, dc.font.set, dc.gc,
  86                                 x, y, buf, len);
  87         }
  88         else {
  89                 gcv.font = dc.font.xfont->fid;
  90                 XChangeGC(dpy, dc.gc, GCForeground | GCBackground | GCFont, &gcv);
  91                 XDrawImageString(dpy, dc.drawable, dc.gc, x, y, buf, len);
  92         }
  93 }
  94
  95 /* extern */
  96
  97 void
  98 drawall()
  99 {
 100         Client *c;
 101
 102         for(c = clients; c; c = getnext(c->next, tsel))
 103                 drawtitle(c);
 104         drawstatus();
 105 }
 106
 107 void
 108 drawstatus()
 109 {
 110         int i;
 111         Bool istile = arrange == dotile;
 112
 113         dc.x = dc.y = 0;
 114         dc.w = bw;
 115         drawtext(NULL, !istile, False);
 116
 117         dc.w = 0;
 118         for(i = 0; i < TLast; i++) {
 119                 dc.x += dc.w;
 120                 dc.w = textw(tags[i]);
 121                 if(istile)
 122                         drawtext(tags[i], (i == tsel), True);
 123                 else
 124                         drawtext(tags[i], (i != tsel), True);
 125         }
 126         if(sel) {
 127                 dc.x += dc.w;
 128                 dc.w = textw(sel->name);
 129                 drawtext(sel->name, istile, True);
 130         }
 131         dc.w = textw(stext);
 132         dc.x = bx + bw - dc.w;
 133         drawtext(stext, !istile, False);
 134
 135         XCopyArea(dpy, dc.drawable, barwin, dc.gc, 0, 0, bw, bh, 0, 0);
 136         XSync(dpy, False);
 137 }
 138
 139 void
 140 drawtitle(Client *c)
 141 {
 142         int i;
 143         Bool istile = arrange == dotile;
 144
 145         if(c == sel) {
 146                 drawstatus();
 147                 XUnmapWindow(dpy, c->title);
 148                 XSetWindowBorder(dpy, c->win, dc.fg);
 149                 return;
 150         }
 151
 152         XSetWindowBorder(dpy, c->win, dc.bg);
 153         XMapWindow(dpy, c->title);
 154
 155         dc.x = dc.y = 0;
 156
 157         dc.w = 0;
 158         for(i = 0; i < TLast; i++) {
 159                 if(c->tags[i]) {
 160                         dc.x += dc.w;
 161                         dc.w = textw(c->tags[i]);
 162                         drawtext(c->tags[i], !istile, True);
 163                 }
 164         }
 165         dc.x += dc.w;
 166         dc.w = textw(c->name);
 167         drawtext(c->name, !istile, True);
 168         XCopyArea(dpy, dc.drawable, c->title, dc.gc, 0, 0, c->tw, c->th, 0, 0);
 169         XSync(dpy, False);
 170 }
 171
 172 unsigned long
 173 getcolor(const char *colstr)
 174 {
 175         Colormap cmap = DefaultColormap(dpy, screen);
 176         XColor color;
 177
 178         XAllocNamedColor(dpy, cmap, colstr, &color, &color);
 179         return color.pixel;
 180 }
 181
 182 void
 183 setfont(const char *fontstr)
 184 {
 185         char **missing, *def;
 186         int i, n;
 187
 188         missing = NULL;
 189         setlocale(LC_ALL, "");
 190         if(dc.font.set)
 191                 XFreeFontSet(dpy, dc.font.set);
 192         dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
 193         if(missing) {
 194                 while(n--)
 195                         fprintf(stderr, "missing fontset: %s\n", missing[n]);
 196                 XFreeStringList(missing);
 197                 if(dc.font.set) {
 198                         XFreeFontSet(dpy, dc.font.set);
 199                         dc.font.set = NULL;
 200                 }
 201         }
 202         if(dc.font.set) {
 203                 XFontSetExtents *font_extents;
 204                 XFontStruct **xfonts;
 205                 char **font_names;
 206
 207                 dc.font.ascent = dc.font.descent = 0;
 208                 font_extents = XExtentsOfFontSet(dc.font.set);
 209                 n = XFontsOfFontSet(dc.font.set, &xfonts, &font_names);
 210                 for(i = 0, dc.font.ascent = 0, dc.font.descent = 0; i < n; i++) {
 211                         if(dc.font.ascent < (*xfonts)->ascent)
 212                                 dc.font.ascent = (*xfonts)->ascent;
 213                         if(dc.font.descent < (*xfonts)->descent)
 214                                 dc.font.descent = (*xfonts)->descent;
 215                         xfonts++;
 216                 }
 217         }
 218         else {
 219                 if(dc.font.xfont)
 220                         XFreeFont(dpy, dc.font.xfont);
 221                 dc.font.xfont = NULL;
 222                 dc.font.xfont = XLoadQueryFont(dpy, fontstr);
 223                 if (!dc.font.xfont)
 224                         dc.font.xfont = XLoadQueryFont(dpy, "fixed");
 225                 if (!dc.font.xfont)
 226                         eprint("error, cannot init 'fixed' font\n");
 227                 dc.font.ascent = dc.font.xfont->ascent;
 228                 dc.font.descent = dc.font.xfont->descent;
 229         }
 230         dc.font.height = dc.font.ascent + dc.font.descent;
 231 }
 232
 233 unsigned int
 234 textw(char *text)
 235 {
 236         return textnw(text, strlen(text)) + dc.font.height;
 237 }