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