Initial import of CVS-v2_8_branch

lib/rdbusybar.cpp

@@ -0,0 +1,76 @@
+//   rdbusybar.cpp
+//
+//   A 'progress bar' widget that shows busy state.
+//
+//   (C) Copyright 2010 Fred Gleason <fredg@paravelsystems.com>
+//
+//    $Id: rdbusybar.cpp,v 1.2 2010/07/29 19:32:33 cvs Exp $
+//
+//   This program is free software; you can redistribute it and/or modify
+//   it under the terms of the GNU Library General Public License 
+//   version 2 as published by the Free Software Foundation.
+//
+//   This program is distributed in the hope that it will be useful,
+//   but WITHOUT ANY WARRANTY; without even the implied warranty of
+//   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//   GNU General Public License for more details.
+//
+//   You should have received a copy of the GNU General Public
+//   License along with this program; if not, write to the Free Software
+//   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+//
+//
+
+#include <rdbusybar.h>
+
+RDBusyBar::RDBusyBar(QWidget *parent,const char *name,WFlags f)
+  : QFrame(parent,name,f)
+{
+  bar_pos=0;
+  setFrameStyle(QFrame::StyledPanel|QFrame::Sunken);
+  QPalette p=palette();
+  p.setColor(QPalette::Active,QColorGroup::Background,
+	     p.color(QPalette::Active,QColorGroup::Base));
+  setPalette(p);
+
+  bar_label=new QLabel(this);
+  p.setColor(QPalette::Active,QColorGroup::Background,
+	     p.color(QPalette::Active,QColorGroup::Highlight));
+  bar_label->setPalette(p);
+  bar_label->hide();
+
+  bar_timer=new QTimer(this);
+  connect(bar_timer,SIGNAL(timeout()),this,SLOT(strobe()));
+}
+
+void RDBusyBar::activate(bool state)
+{
+  if(state) {
+    Update();
+    bar_label->show();
+    bar_timer->start(500);
+  }
+  else {
+    bar_label->hide();
+    bar_timer->stop();
+  }
+}
+
+
+void RDBusyBar::strobe()
+{
+  bar_pos++;
+  bar_pos=bar_pos%5;
+  if(bar_label->isVisible()) {
+    Update();
+  }
+}
+
+
+void RDBusyBar::Update()
+{
+  int w=rect().width();
+  int h=rect().height();
+  int fw=frameWidth();
+  bar_label->setGeometry(bar_pos*w/5+fw,fw,(w-2*fw)/5,h-2*fw);
+}