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