1 files changed, 107 insertions, 0 deletions
diff --git a/qtjava/javalib/examples/hello/Hello.java b/qtjava/javalib/examples/hello/Hello.java
new file mode 100644
index 00000000..c5e85041
--- /dev/null
+++ b/qtjava/javalib/examples/hello/Hello.java
@@ -0,0 +1,107 @@
+/***************************************************************************
+* $Id$
+**
+* Copyright (C) 1992-2000 Trolltech AS.  All rights reserved.
+**
+* This file is part of an example program for Qt.  This example
+* program may be used, distributed and modified without limitation.
+**
+****************************************************************************/
+import org.kde.qt.*;
+
+class Hello  extends QWidget
+{
+private    String t;
+private    int     b = 0;
+
+
+/*
+  Constructs a Hello widget. Starts a 40 ms animation timer.
+*/
+Hello( String text )
+{
+	this(text, null, null);
+}
+
+Hello( String text, QWidget parent, String name )
+{
+    super(parent,name);
+	t = text;
+    QTimer timer = new QTimer(this);
+    connect( timer, SIGNAL("timeout()"), SLOT("animate()") );
+    timer.start( 40 );
+
+    resize( 260, 130 );
+}
+
+
+/*
+  This private slot is called each time the timer fires.
+*/
+
+void animate()
+{
+    b = (b + 1) & 15;
+    repaint( false );
+}
+
+
+/*
+  Handles mouse button release events for the Hello widget.
+
+  We emit the clicked() signal when the mouse is released inside
+  the widget.
+*/
+
+protected void mouseReleaseEvent( QMouseEvent e )
+{
+    if ( rect().contains( e.pos() ) )
+        emit("clicked");
+}
+
+
+    static int sin_tbl[] = {
+        0, 38, 71, 92, 100, 92, 71, 38,	0, -38, -71, -92, -100, -92, -71, -38};
+
+/*
+  Handles paint events for the Hello widget.
+
+  Flicker-free update. The text is first drawn in the pixmap and the
+  pixmap is then blt'ed to the screen.
+*/
+protected void paintEvent( QPaintEvent e )
+{
+    if ( t.equals("") )
+        return;
+
+    // 1: Compute some sizes, positions etc.
+    QFontMetrics fm = fontMetrics();
+    int w = fm.width(t) + 20;
+    int h = fm.height() * 2;
+    int pmx = width()/2 - w/2;
+    int pmy = height()/2 - h/2;
+
+    // 2: Create the pixmap and fill it with the widget's background
+    QPixmap pm = new QPixmap( w, h );
+    pm.fill( this, pmx, pmy );
+
+    // 3: Paint the pixmap. Cool wave effect
+    QPainter p = new QPainter();
+    int x = 10;
+    int y = h/2 + fm.descent();
+    int i = 0;
+    p.begin( pm );
+    p.setFont( font() );
+    while ( i < t.length() ) {
+        int i16 = (b+i) & 15;
+        p.setPen( new QColor((15-i16)*16,255,255,QColor.Hsv) );
+        p.drawText( x, y-sin_tbl[i16]*h/800, t.substring(i,i+1), 1 );
+        x += fm.width( t.substring(i,i+1) );
+        i++;
+    }
+    p.end();
+
+    // 4: Copy the pixmap to the Hello widget
+    bitBlt( this, pmx, pmy, pm );
+}
+}