kwin/killwindow.cpp

/*****************************************************************
kwin - the KDE window manager

Copyright (C) 1999, 2000 Matthias Ettrich <ettrich@kde.org>
******************************************************************/

//#ifndef QT_CLEAN_NAMESPACE
//#define QT_CLEAN_NAMESPACE
//#endif
#include "killwindow.h"
#include <X11/Xlib.h>
#include <X11/keysym.h>
#include <X11/keysymdef.h>
#include <X11/cursorfont.h>

KillWindow::KillWindow( Workspace* ws )
    : workspace( ws ) {}

KillWindow::~KillWindow() {}

void KillWindow::start() {
    static Cursor kill_cursor = 0;
    if (!kill_cursor)
        kill_cursor = XCreateFontCursor(qt_xdisplay(), XC_pirate);

    if (XGrabPointer(qt_xdisplay(), qt_xrootwin(), False,
                     ButtonPressMask | ButtonReleaseMask |
                     PointerMotionMask |
                     EnterWindowMask | LeaveWindowMask,
                     GrabModeAsync, GrabModeAsync, None,
                     kill_cursor, CurrentTime) == GrabSuccess) {
	XGrabKeyboard(qt_xdisplay(), qt_xrootwin(), False,
		      GrabModeAsync, GrabModeAsync, CurrentTime);

	XEvent ev;
	int return_pressed  = 0;
	int escape_pressed  = 0;
	int button_released = 0;

	XGrabServer(qt_xdisplay());

	while (!return_pressed && !escape_pressed && !button_released) {
	    XMaskEvent(qt_xdisplay(), KeyPressMask | ButtonPressMask |
		       ButtonReleaseMask | PointerMotionMask, &ev);

	    if (ev.type == KeyPress)    {
		int kc = XKeycodeToKeysym(qt_xdisplay(), ev.xkey.keycode, 0);
		int mx = 0;
		int my = 0;
		return_pressed = (kc == XK_Return) || (kc == XK_space);
		escape_pressed = (kc == XK_Escape);
		if (kc == XK_Left)  mx = -10;
		if (kc == XK_Right) mx = 10;
		if (kc == XK_Up)    my = -10;
		if (kc == XK_Down)  my = 10;
		if (ev.xkey.state & ControlMask) {
		    mx /= 10;
		    my /= 10;
		}
		QCursor::setPos(QCursor::pos()+QPoint(mx, my));
	    }

	    if (ev.type == ButtonRelease) {
		button_released = (ev.xbutton.button == Button1);
		if ( ev.xbutton.button == Button3 ) {
		    escape_pressed = TRUE;
		    break;
		}
		workspace->killWindowAtPosition(ev.xbutton.x_root, ev.xbutton.y_root);
	    }
	    continue;
	}
	if (return_pressed)
	    workspace->killWindowAtPosition(QCursor::pos().x(), QCursor::pos().y());

	XUngrabServer(qt_xdisplay());

	XUngrabKeyboard(qt_xdisplay(), CurrentTime);
	XUngrabPointer(qt_xdisplay(), CurrentTime);
    }
}