1 files changed, 356 insertions, 0 deletions
diff --git a/qtjava/javalib/examples/qmag/MagWidget.java b/qtjava/javalib/examples/qmag/MagWidget.java
new file mode 100644
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+++ b/qtjava/javalib/examples/qmag/MagWidget.java
@@ -0,0 +1,356 @@
+/***************************************************************************
+* $Id$
+**
+* 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 MagWidget  extends QWidget
+{
+private QComboBox   zoom;
+private QComboBox   refresh;
+private QPushButton saveButton;
+private QPushButton multiSaveButton;
+private QPushButton quitButton;
+private QPixmap	pm;		// pixmap, magnified
+private QPixmap	p;		// pixmap
+private QImage	image;		// image of pixmap (for RGB)
+private QLabel      rgb;
+private int		yoffset;	// pixels in addition to the actual picture
+private int		z;		// magnification factor
+private int		r;		// autorefresh rate (index into refreshrates)
+private boolean	grabbing;	// true if qmag is currently grabbing
+private int		grabx, graby;
+private String	multifn;	// filename for multisave
+
+
+static String zoomfactors[] = {
+    "100%", "200%", "300%", "400%", "500%",
+    "600%", "700%", "800%", "1600%" };
+
+static String refreshrates[] = {
+    "No autorefresh", "50 per second", "4 per second", "3 per second", "2 per second",
+    "Every second", "Every two seconds", "Every three seconds",
+    "Every five seconds", "Every ten seconds" };
+
+static int timer[] = {
+    0, 20, 250, 333, 500, 1000, 2000, 3000, 5000, 10000 };
+
+
+MagWidget( )
+{
+	this(null, null);
+}
+
+MagWidget( QWidget parent, String name )
+{
+    super( parent, name);
+    z = 1;			// default zoom (100%)
+    r = 0;			// default refresh (none)
+
+    int w=0, x=0, n;
+
+    zoom = new QComboBox( false, this );
+    zoom.insertStrList( zoomfactors, 9 );
+    connect( zoom, SIGNAL("activated(int)"), SLOT("setZoom(int)") );
+
+    refresh = new QComboBox( false, this );
+    refresh.insertStrList( refreshrates, 9 );
+    connect( refresh, SIGNAL("activated(int)"), SLOT("setRefresh(int)") );
+
+    for( n=0; n<9; n++) {
+	int w2 = zoom.fontMetrics().width( zoomfactors[n] );
+	w = w2 > w ? w2 : w;
+    }
+    zoom.setGeometry( 2, 2, w+30, 20 );
+
+    x = w+34;
+    w = 0;
+    for( n=0; n<9; n++) {
+	int w2 = refresh.fontMetrics().width( refreshrates[n] );
+	w = w2 > w ? w2 : w;
+    }
+    refresh.setGeometry( x, 2, w+30, 20 );
+
+    saveButton = new QPushButton( this );
+    connect( saveButton, SIGNAL("clicked()"), this, SLOT("save()") );
+    saveButton.setText( "Save" );
+    saveButton.setGeometry( x+w+30+2, 2,
+			     10+saveButton.fontMetrics().width("Save"), 20 );
+
+    multiSaveButton = new QPushButton( this );
+    multiSaveButton.setToggleButton(true);
+    connect( multiSaveButton, SIGNAL("clicked()"), this, SLOT("multiSave()") );
+    multiSaveButton.setText( "MultiSave" );
+    multiSaveButton.setGeometry( saveButton.geometry().right() + 2, 2,
+			     10+multiSaveButton.fontMetrics().width("MultiSave"), 20 );
+
+    quitButton = new QPushButton( this );
+    connect( quitButton, SIGNAL("clicked()"), qApp(), SLOT("quit()") );
+    quitButton.setText( "Quit" );
+    quitButton.setGeometry( multiSaveButton.geometry().right() + 2, 2,
+			     10+quitButton.fontMetrics().width("Quit"), 20 );
+
+//  #else
+//    zoom = null;
+//    multiSaveButton = null;
+
+    setRefresh(1);
+    setZoom(5);
+
+    rgb = new QLabel( this );
+    rgb.setText( "" );
+    rgb.setAlignment( AlignVCenter );
+    rgb.resize( width(), rgb.fontMetrics().height() + 4 );
+
+    yoffset = zoom.height()	// top buttons
+	+ 4			// space around top buttons
+	+ rgb.height();	// color-value text height
+    setMinimumSize( quitButton.pos().x(), yoffset+20 );
+    resize( quitButton.geometry().topRight().x() + 2, yoffset+60 );
+//  #else
+    yoffset = 0;
+    resize(350,350);
+
+    grabx = graby = -1;
+    grabbing = false;
+
+    setMouseTracking( true );	// and do let me know what pixel I'm at, eh?
+
+    grabAround( new QPoint(grabx=qApp().desktop().width()/2, graby=qApp().desktop().height()/2) );
+}
+
+
+void setZoom( int index )
+{
+    if (index == 8)
+	z = 16;
+    else
+	z = index+1;
+    grab();
+}
+
+
+void setRefresh( int index )
+{
+    r = index;
+    killTimers();
+    if (index != 0 && grabbing)
+	startTimer( timer[r] );
+}
+
+
+void save()
+{
+    if ( p != null ) {
+	killTimers();
+	String fn = QFileDialog.getSaveFileName();
+	if ( !fn.equals("") )
+	    p.save( fn, "BMP" );
+	if ( r != 0)
+	    startTimer( timer[r] );
+    }
+}
+
+void multiSave()
+{
+    if ( p != null ) {
+	multifn = ""; // stops saving
+	multifn = QFileDialog.getSaveFileName();
+	if ( multifn.equals("") )
+	    multiSaveButton.setOn(false);
+	if ( r == 0)
+	    p.save( multifn, "BMP" );
+    } else {
+	multiSaveButton.setOn(false);
+    }
+}
+
+
+void grab()
+{
+    if ( !isVisible() ) 
+	return;			// don't eat resources when iconified
+
+    if ( grabx < 0 || graby < 0 )
+	return;			// don't grab until the user has said to
+
+    int x,y, w,h;
+
+    w = (width()+z-1)/z;
+    h = (height()+z-1-yoffset)/z;
+    if ( w<1 || h<1 )
+	return;			// don't ask too much from the window system :)
+
+    x = grabx-w/2;		// find a suitable position to grab from
+    y = graby-h/2;
+    if ( x + w > QApplication.desktop().width() )
+	x = QApplication.desktop().width()-w;
+    else if ( x < 0 )
+	x = 0;
+    if ( y + h > QApplication.desktop().height() ) 
+	y = QApplication.desktop().height()-h;
+    else if ( y < 0 )
+	y = 0;
+
+    p = QPixmap.grabWindow( QApplication.desktop().winId(),  x, y, w, h );
+    image = p.convertToImage();
+    QWMatrix m = new QWMatrix();			// after getting it, scale it
+    m.scale( (double)z, (double)z );
+    // A cast from Object to QPixmap is needed in java. The xForm methods
+    // have several different return types in C++, and must all be of type
+    // 'Object' for java
+    pm = (QPixmap) p.xForm( m );
+
+    if ( multiSaveButton == null || !multiSaveButton.isOn() )
+	repaint( false );		// and finally repaint, flicker-free
+}
+
+
+protected void paintEvent( QPaintEvent e )
+{
+    if ( pm != null ) {
+	QPainter paint = new QPainter( this );
+	paint.drawPixmap( 0, zoom != null ? zoom.height()+4 : 0, pm, 
+			      0,0, width(), height()-yoffset );
+    }
+}
+
+
+protected void mousePressEvent( QMouseEvent e )
+{
+    if ( !grabbing ) {		// prepare to grab...
+	grabbing = true;
+	killTimers();
+	grabMouse( crossCursor() );
+	grabx = -1;
+	graby = -1;
+    } else {			// REALLY prepare to grab
+	grabx = mapToGlobal(e.pos()).x();
+	graby = mapToGlobal(e.pos()).y();
+    }
+}
+
+
+
+protected void mouseReleaseEvent( QMouseEvent  e )
+{
+    if ( grabbing && grabx >= 0 && graby >= 0 ) {
+	grabbing = false;
+	grabAround(e.pos());
+	releaseMouse();
+    }
+}
+
+void grabAround(QPoint pos)
+{
+    int rx, ry;
+    rx = mapToGlobal(pos).x();
+    ry = mapToGlobal(pos).y();
+    int w = Math.abs(rx-grabx);
+    int h = Math.abs(ry-graby);
+    if ( w > 10 && h > 10 ) {
+	int pz;
+	pz = 1;
+	while ( w*pz*h*pz < width()*(height()-yoffset) &&
+		w*pz < QApplication.desktop().width() &&
+		h*pz < QApplication.desktop().height() )
+	    pz++;
+	if ( (w*pz*h*pz - width()*(height()-yoffset)) >
+	     (width()*(height()-yoffset) - w*(pz-1)*h*(pz-1)) )
+	    pz--;
+	if ( pz < 1 )
+	    pz = 1;
+	if ( pz > 8 )
+	    pz = 8;
+	if ( zoom != null)
+	    zoom.setCurrentItem( pz-1 );
+
+	z = pz;
+	grabx = (rx < grabx ? rx : grabx) + w/2;
+	graby = (ry < graby ? ry : graby) + h/2;
+	resize( w*z, h*z+yoffset );
+    }
+    grab();
+    if ( r != 0 )
+	startTimer( timer[r] );
+}
+
+
+protected void mouseMoveEvent( QMouseEvent e )
+{
+    if ( grabbing || pm.isNull() ||
+	 e.pos().y() > height() - (zoom != null ? zoom.fontMetrics().height() - 4 : 0) ||
+	 e.pos().y() < (zoom != null ? zoom.height()+4 : 4) ) {
+	rgb.setText( "" );
+    } else {
+	int x,y;
+	x = e.pos().x() / z;
+	y = (e.pos().y() - ( zoom != null ? zoom.height() : 0 ) - 4) / z;
+	String pixelinfo = "";
+	if ( image.valid(x,y) )
+	{
+	    int px = image.pixel(x,y);
+	    pixelinfo= " " + qRed(px) + "," + qGreen(px) + "," + qBlue(px) + " ";
+	    pixelinfo += "#" + Integer.toHexString(qRed(px))
+		    + Integer.toHexString(qGreen(px))
+			+ Integer.toHexString(qBlue(px)) + " ";
+	}
+	String label = "x=" + (x+grabx) + ",  y=" + (y+graby) + " " + pixelinfo;
+	rgb.setText( label );
+    }
+}
+	
+
+protected void focusOutEvent( QFocusEvent e )
+{
+    rgb.setText( "" );
+}
+
+
+protected void timerEvent( QTimerEvent e )
+{
+    grab();
+/*
+    if ( multiSaveButton.isOn() && !multifn.equals("") ) {
+	QRegExp num("[0-9][0-9]");
+	int start;
+	int len;
+	if ((start=num.match(multifn,0,&len))>=0)
+	    multifn.replace(num,
+		String().setNum(multifn.mid(start,len).toInt()+1)
+	    );
+	p.save( multifn, "BMP" );
+    }
+*/
+}
+
+
+protected void resizeEvent( QResizeEvent e )
+{
+    rgb.setGeometry( 0, height() - rgb.height(), width(), rgb.height() );
+    grab();
+}
+
+
+
+
+public static void main(String[] args)
+{
+    QApplication a = new QApplication( args );
+    MagWidget m = new MagWidget();
+    a.setMainWidget( m );
+    m.show();
+    a.exec();
+    return;
+}
+
+	static {
+		qtjava.initialize();
+	}
+}