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97 lines
2.8 KiB
C++
97 lines
2.8 KiB
C++
/* Copyright (C) 2002-2005 RealVNC Ltd. All Rights Reserved.
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*
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* This is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This software is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this software; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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* USA.
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*/
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//
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// TXDialog.h
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//
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// A TXDialog is a pop-up dialog window. The dialog can be made visible by
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// calling its show() method. Dialogs can be modal or non-modal. For a modal
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// dialog box, the show() method only returns when the dialog box has been
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// dismissed. For a non-modal dialog box, the show() method returns
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// immediately.
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//
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#ifndef __TXDIALOG_H__
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#define __TXDIALOG_H__
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#include "TXWindow.h"
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#include <errno.h>
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class TXDialog : public TXWindow, public TXDeleteWindowCallback {
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public:
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TXDialog(Display* dpy, int width, int height, const char* name,
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bool modal_=false)
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: TXWindow(dpy, width, height), done(false), ok(false), modal(modal_)
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{
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toplevel(name, this);
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resize(width, height);
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}
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virtual ~TXDialog() {}
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// show() makes the dialog visible. For a modal dialog box, this processes X
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// events until the done flag has been set, after which it returns the value
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// of the ok flag. For a non-modal dialog box it always returns true
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// immediately.
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bool show() {
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ok = false;
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done = false;
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initDialog();
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raise();
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map();
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if (modal) {
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while (true) {
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TXWindow::handleXEvents(dpy);
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if (done) {
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return ok;
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}
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fd_set rfds;
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FD_ZERO(&rfds);
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FD_SET(ConnectionNumber(dpy), &rfds);
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int n = select(FD_SETSIZE, &rfds, 0, 0, 0);
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if (n < 0) throw rdr::SystemException("select",errno);
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}
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}
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return true;
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}
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// initDialog() can be overridden in a derived class. Typically it is used
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// to make sure that checkboxes have the right state, etc.
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virtual void initDialog() {}
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// resize() is overridden here to re-center the dialog
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void resize(int w, int h) {
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TXWindow::resize(w,h);
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int dpyWidth = WidthOfScreen(DefaultScreenOfDisplay(dpy));
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int dpyHeight = HeightOfScreen(DefaultScreenOfDisplay(dpy));
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setUSPosition((dpyWidth - width() - 10) / 2, (dpyHeight - height() - 30) / 2);
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}
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protected:
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virtual void deleteWindow(TXWindow* w) {
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ok = false;
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done = true;
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unmap();
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}
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bool done;
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bool ok;
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bool modal;
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};
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#endif
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