109 lines
2.5 KiB
C
109 lines
2.5 KiB
C
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void
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dragmfact(const Arg *arg)
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{
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unsigned int n;
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int py, px; // pointer coordinates
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int ax, ay, aw, ah; // area position, width and height
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int center = 0, horizontal = 0, mirror = 0, fixed = 0; // layout configuration
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double fact;
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Monitor *m;
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XEvent ev;
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Time lasttime = 0;
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m = selmon;
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Client *c;
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for (n = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), n++);
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ax = m->wx;
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ay = m->wy;
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ah = m->wh;
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aw = m->ww;
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if (!n)
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return;
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/* do not allow mfact to be modified under certain conditions */
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if (!m->lt[m->sellt]->arrange // floating layout
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|| (!fixed && m->nmaster && n <= m->nmaster) // no master
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|| m->lt[m->sellt]->arrange == &monocle
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)
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return;
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if (center) {
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if (horizontal) {
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px = ax + aw / 2;
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py = ay + ah / 2 + ah * m->mfact / 2.0;
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} else { // vertical split
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px = ax + aw / 2 + aw * m->mfact / 2.0;
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py = ay + ah / 2;
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}
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} else if (horizontal) {
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px = ax + aw / 2;
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if (mirror)
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py = ay + (ah * (1.0 - m->mfact));
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else
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py = ay + (ah * m->mfact);
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} else { // vertical split
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if (mirror)
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px = ax + (aw * m->mfact);
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else
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px = ax + (aw * m->mfact);
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py = ay + ah / 2;
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}
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if (XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
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None, cursor[horizontal ? CurResizeVertArrow : CurResizeHorzArrow]->cursor, CurrentTime) != GrabSuccess)
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return;
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XWarpPointer(dpy, None, root, 0, 0, 0, 0, px, py);
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do {
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XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask, &ev);
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switch(ev.type) {
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case ConfigureRequest:
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case Expose:
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case MapRequest:
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handler[ev.type](&ev);
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break;
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case MotionNotify:
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if ((ev.xmotion.time - lasttime) <= (1000 / refreshrate_dragmfact))
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continue;
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if (lasttime != 0) {
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px = ev.xmotion.x;
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py = ev.xmotion.y;
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}
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lasttime = ev.xmotion.time;
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if (center)
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if (horizontal)
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if (py - ay > ah / 2)
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fact = (double) 1.0 - (ay + ah - py) * 2 / (double) ah;
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else
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fact = (double) 1.0 - (py - ay) * 2 / (double) ah;
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else
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if (px - ax > aw / 2)
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fact = (double) 1.0 - (ax + aw - px) * 2 / (double) aw;
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else
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fact = (double) 1.0 - (px - ax) * 2 / (double) aw;
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else
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if (horizontal)
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fact = (double) (py - ay) / (double) ah;
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else
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fact = (double) (px - ax) / (double) aw;
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if (!center && mirror)
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fact = 1.0 - fact;
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setmfact(&((Arg) { .f = 1.0 + fact }));
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px = ev.xmotion.x;
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py = ev.xmotion.y;
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break;
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}
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} while (ev.type != ButtonRelease);
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XUngrabPointer(dpy, CurrentTime);
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while (XCheckMaskEvent(dpy, EnterWindowMask, &ev));
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}
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