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         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(char *text, unsigned int len)
  34 {
  35         XRectangle r;
  36         if(dc.font.set) {
  37                 XmbTextExtents(dc.font.set, text, len, NULL, &r);
  38                 return r.width;
  39         }
  40         return XTextWidth(dc.font.xfont, text, len);
  41 }
  42
  43 static void
  44 drawtext(const char *text, Bool invert, Bool border)
  45 {
  46         int x, y, w, h;
  47         unsigned int len;
  48         static char buf[256];
  49         XGCValues gcv;
  50         XRectangle r = { dc.x, dc.y, dc.w, dc.h };
  51
  52         XSetForeground(dpy, dc.gc, invert ? dc.fg : dc.bg);
  53         XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
  54
  55         w = 0;
  56         if(border)
  57                 drawborder();
  58
  59         if(!text)
  60                 return;
  61
  62         len = strlen(text);
  63         if(len >= sizeof(buf))
  64                 len = sizeof(buf) - 1;
  65         memcpy(buf, text, len);
  66         buf[len] = 0;
  67
  68         h = dc.font.ascent + dc.font.descent;
  69         y = dc.y + (dc.h / 2) - (h / 2) + dc.font.ascent;
  70         x = dc.x + (h / 2);
  71
  72         /* shorten text if necessary */
  73         while(len && (w = textnw(buf, len)) > dc.w - h)
  74                 buf[--len] = 0;
  75
  76         if(w > dc.w)
  77                 return; /* too long */
  78
  79         gcv.foreground = invert ? dc.bg : dc.fg;
  80         gcv.background = invert ? dc.fg : dc.bg;
  81         if(dc.font.set) {
  82                 XChangeGC(dpy, dc.gc, GCForeground | GCBackground, &gcv);
  83                 XmbDrawImageString(dpy, dc.drawable, dc.font.set, dc.gc,
  84                                 x, y, buf, len);
  85         }
  86         else {
  87                 gcv.font = dc.font.xfont->fid;
  88                 XChangeGC(dpy, dc.gc, GCForeground | GCBackground | GCFont, &gcv);
  89                 XDrawImageString(dpy, dc.drawable, dc.gc, x, y, buf, len);
  90         }
  91 }
  92
  93 /* extern */
  94
  95 void
  96 drawall()
  97 {
  98         Client *c;
  99
 100         for(c = clients; c; c = getnext(c->next, tsel))
 101                 drawtitle(c);
 102         drawstatus();
 103 }
 104
 105 void
 106 drawstatus()
 107 {
 108         int i;
 109         Bool istile = arrange == dotile;
 110
 111         dc.x = dc.y = 0;
 112         dc.w = bw;
 113         drawtext(NULL, !istile, False);
 114
 115         dc.w = 0;
 116         for(i = 0; i < TLast; i++) {
 117                 dc.x += dc.w;
 118                 dc.w = textw(tags[i]);
 119                 if(istile)
 120                         drawtext(tags[i], (i == tsel), True);
 121                 else
 122                         drawtext(tags[i], (i != tsel), True);
 123         }
 124         if(sel) {
 125                 dc.x += dc.w;
 126                 dc.w = textw(sel->name);
 127                 drawtext(sel->name, istile, True);
 128         }
 129         dc.w = textw(stext);
 130         dc.x = bx + bw - dc.w;
 131         drawtext(stext, !istile, False);
 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 < TLast; i++) {
 157                 if(c->tags[i]) {
 158                         dc.x += dc.w;
 159                         dc.w = textw(c->tags[i]);
 160                         drawtext(c->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         XColor color;
 174         Colormap cmap = DefaultColormap(dpy, screen);
 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(char *text)
 233 {
 234         return textnw(text, strlen(text)) + dc.font.height;
 235 }