Add Qt3 development HEAD version

1 files changed, 116 insertions, 0 deletions

diff --git a/examples/tooltip/tooltip.cpp b/examples/tooltip/tooltip.cpp
new file mode 100644
index 0000000..0d08de0
--- /dev/null
+++ b/examples/tooltip/tooltip.cpp
@@ -0,0 +1,116 @@
+/****************************************************************************
+**
+** Copyright (C) 1992-2008 Trolltech ASA.  All rights reserved.
+**
+** This file is part of an example program for Qt.  This example
+** program may be used, distributed and modified without limitation.
+**
+*****************************************************************************/
+
+#include "tooltip.h"
+#include <qapplication.h>
+#include <qpainter.h>
+#include <stdlib.h>
+
+
+DynamicTip::DynamicTip( QWidget * parent )
+    : QToolTip( parent )
+{
+    // no explicit initialization needed
+}
+
+
+void DynamicTip::maybeTip( const QPoint &pos )
+{
+    if ( !parentWidget()->inherits( "TellMe" ) )
+	return;
+
+    QRect r( ((TellMe*)parentWidget())->tip(pos) );
+    if ( !r.isValid() )
+	return;
+
+    QString s;
+    s.sprintf( "position: %d,%d", r.center().x(), r.center().y() );
+    tip( r, s );
+}
+
+
+TellMe::TellMe( QWidget * parent , const char * name  )
+    : QWidget( parent, name )
+{
+    setMinimumSize( 30, 30 );
+    r1 = randomRect();
+    r2 = randomRect();
+    r3 = randomRect();
+
+    t = new DynamicTip( this );
+
+    QToolTip::add( this, r3, "this color is called red" ); // <- helpful
+}
+
+
+TellMe::~TellMe()
+{
+    delete t;
+    t = 0;
+}
+
+
+void TellMe::paintEvent( QPaintEvent * e )
+{
+    QPainter p( this );
+
+    // I try to be efficient here, and repaint only what's needed
+
+    if ( e->rect().intersects( r1 ) ) {
+	p.setBrush( blue );
+	p.drawRect( r1 );
+    }
+
+    if ( e->rect().intersects( r2 ) ) {
+	p.setBrush( blue );
+	p.drawRect( r2 );
+    }
+
+    if ( e->rect().intersects( r3 ) ) {
+	p.setBrush( red );
+	p.drawRect( r3 );
+    }
+}
+
+
+void TellMe::mousePressEvent( QMouseEvent * e )
+{
+    if ( r1.contains( e->pos() ) )
+	r1 = randomRect();
+    if ( r2.contains( e->pos() ) )
+	r2 = randomRect();
+    repaint();
+}
+
+
+void TellMe::resizeEvent( QResizeEvent * )
+{
+    if ( !rect().contains( r1 ) )
+	 r1 = randomRect();
+    if ( !rect().contains( r2 ) )
+	 r2 = randomRect();
+}
+
+
+QRect TellMe::randomRect()
+{
+    return QRect( ::rand() % (width() - 20), ::rand() % (height() - 20),
+		  20, 20 );
+}
+
+
+QRect TellMe::tip( const QPoint & p )
+{
+    if ( r1.contains( p ) )
+	return r1;
+    else if ( r2.contains( p ) )
+	return r2;
+    else
+	return QRect( 0,0, -1,-1 );
+}