common.c

   1 /* See LICENSE file for copyright and license details. */
   2 #include <stdlib.h>
   3 #include <string.h>
   4 #include <unistd.h>
   5 #include <X11/keysym.h>
   6 #ifdef XINERAMA
   7 #include <X11/extensions/Xinerama.h>
   8 #endif
   9 #include "dmenu.h"
  10
  11 /* variables */
  12 char *prompt = NULL;
  13 char text[4096] = "";
  14 int promptw = 0;
  15 int screen;
  16 unsigned int numlockmask = 0;
  17 unsigned int mw, mh;
  18 unsigned long normcol[ColLast];
  19 unsigned long selcol[ColLast];
  20 Bool topbar = True;
  21 DC dc;
  22 Display *dpy;
  23 Window win, root;
  24
  25 void
  26 grabkeyboard(void) {
  27         unsigned int len;
  28
  29         for(len = 1000; len; len--) {
  30                 if(XGrabKeyboard(dpy, root, True, GrabModeAsync, GrabModeAsync, CurrentTime)
  31                 == GrabSuccess)
  32                         return;
  33                 usleep(1000);
  34         }
  35         exit(EXIT_FAILURE);
  36 }
  37
  38 void
  39 run(void) {
  40         XEvent ev;
  41
  42         /* main event loop */
  43         XSync(dpy, False);
  44         while(!XNextEvent(dpy, &ev))
  45                 switch(ev.type) {
  46                 case KeyPress:
  47                         kpress(&ev.xkey);
  48                         break;
  49                 case Expose:
  50                         if(ev.xexpose.count == 0)
  51                                 drawbar();
  52                         break;
  53                 case VisibilityNotify:
  54                         if(ev.xvisibility.state != VisibilityUnobscured)
  55                                 XRaiseWindow(dpy, win);
  56                         break;
  57                 }
  58         exit(EXIT_FAILURE);
  59 }
  60
  61 void
  62 setup(unsigned int lines) {
  63         int i, j, x, y;
  64 #if XINERAMA
  65         int n;
  66         XineramaScreenInfo *info = NULL;
  67 #endif
  68         XModifierKeymap *modmap;
  69         XSetWindowAttributes wa;
  70
  71         /* init modifier map */
  72         modmap = XGetModifierMapping(dpy);
  73         for(i = 0; i < 8; i++)
  74                 for(j = 0; j < modmap->max_keypermod; j++) {
  75                         if(modmap->modifiermap[i * modmap->max_keypermod + j]
  76                         == XKeysymToKeycode(dpy, XK_Num_Lock))
  77                                 numlockmask = (1 << i);
  78                 }
  79         XFreeModifiermap(modmap);
  80
  81         dc.dpy = dpy;
  82         normcol[ColBG] = getcolor(&dc, normbgcolor);
  83         normcol[ColFG] = getcolor(&dc, normfgcolor);
  84         selcol[ColBG] = getcolor(&dc, selbgcolor);
  85         selcol[ColFG] = getcolor(&dc, selfgcolor);
  86         initfont(&dc, font);
  87
  88         /* input window */
  89         wa.override_redirect = True;
  90         wa.background_pixmap = ParentRelative;
  91         wa.event_mask = ExposureMask | KeyPressMask | VisibilityChangeMask;
  92
  93         /* input window geometry */
  94         mh = (dc.font.height + 2) * (lines + 1);
  95 #if XINERAMA
  96         if(XineramaIsActive(dpy) && (info = XineramaQueryScreens(dpy, &n))) {
  97                 i = 0;
  98                 if(n > 1) {
  99                         int di;
 100                         unsigned int dui;
 101                         Window dummy;
 102                         if(XQueryPointer(dpy, root, &dummy, &dummy, &x, &y, &di, &di, &dui))
 103                                 for(i = 0; i < n; i++)
 104                                         if(INRECT(x, y, info[i].x_org, info[i].y_org, info[i].width, info[i].height))
 105                                                 break;
 106                 }
 107                 x = info[i].x_org;
 108                 y = topbar ? info[i].y_org : info[i].y_org + info[i].height - mh;
 109                 mw = info[i].width;
 110                 XFree(info);
 111         }
 112         else
 113 #endif
 114         {
 115                 x = 0;
 116                 y = topbar ? 0 : DisplayHeight(dpy, screen) - mh;
 117                 mw = DisplayWidth(dpy, screen);
 118         }
 119
 120         win = XCreateWindow(dpy, root, x, y, mw, mh, 0,
 121                         DefaultDepth(dpy, screen), CopyFromParent,
 122                         DefaultVisual(dpy, screen),
 123                         CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
 124
 125         setupdraw(&dc, win);
 126         if(prompt)
 127                 promptw = MIN(textw(&dc, prompt), mw / 5);
 128         XMapRaised(dpy, win);
 129 }