Test conversion to TQt3 from Qt3 8c6fc1f8e35fd264dd01c582ca5e7549b32ab731

1 files changed, 445 insertions, 0 deletions

diff --git a/examples/demo/graph.cpp b/examples/demo/graph.cpp
new file mode 100644
index 000000000..96e03d6ab
--- /dev/null
+++ b/examples/demo/graph.cpp
@@ -0,0 +1,445 @@
+#include "graph.h"
+#include <qcanvas.h>
+#include <stdlib.h>
+#include <qdatetime.h>
+#include <qhbox.h>
+#include <qpushbutton.h>
+#include <qslider.h>
+#include <qlabel.h>
+#include <qlayout.h>
+
+const int bounce_rtti = 1234;
+
+// We use a global variable to save memory - all the brushes and pens in
+// the mesh are shared.
+static TQBrush *tb = 0;
+static TQPen *tp = 0;
+
+class EdgeItem;
+class NodeItem;
+class FigureEditor;
+typedef TQValueList<NodeItem*> NodeItemList;
+typedef TQValueList<EdgeItem*> EdgeItemList;
+
+#define SPEED2ADVANCE(x) (301-x)
+
+class GraphWidgetPrivate
+{
+public:
+    GraphWidgetPrivate() {
+	moving = 0;
+	speed = 275;
+    }
+    ~GraphWidgetPrivate() {
+	delete canvas;
+    }
+    NodeItemList nodeItems;
+    FigureEditor* editor;
+    TQCanvas* canvas;
+    TQCanvasItem* moving;
+    int speed;
+};
+
+class EdgeItem: public TQCanvasLine
+{
+public:
+    EdgeItem( NodeItem*, NodeItem*, TQCanvas* );
+    void setFromPoint( int x, int y ) ;
+    void setToPoint( int x, int y );
+    void moveBy(double dx, double dy);
+
+    NodeItem* from;
+    NodeItem* to;
+};
+
+
+
+class NodeItem: public TQCanvasEllipse
+{
+public:
+    NodeItem( GraphWidgetPrivate* g );
+    ~NodeItem() {}
+
+    void addInEdge( EdgeItem *edge ) { inList.append( edge ); }
+    void addOutEdge( EdgeItem *edge ) { outList.append( edge ); }
+
+    void moveBy(double dx, double dy);
+
+    void calcForce();
+    void advance( int stage );
+
+private:
+    GraphWidgetPrivate* graph;
+    EdgeItemList inList;
+    EdgeItemList outList;
+};
+
+
+
+void EdgeItem::moveBy(double, double)
+{
+    //nothing
+}
+
+EdgeItem::EdgeItem( NodeItem *fromItem, NodeItem *toItem, TQCanvas *canvas )
+    : TQCanvasLine( canvas )
+{
+    from = fromItem;
+    to = toItem;
+    setPen( *tp );
+    setBrush( *tb );
+    from->addOutEdge( this );
+    to->addInEdge( this );
+    setPoints( int(from->x()), int(from->y()), int(to->x()), int(to->y()) );
+    setZ( 127 );
+}
+
+void EdgeItem::setFromPoint( int x, int y )
+{
+    setPoints( x,y, endPoint().x(), endPoint().y() );
+}
+
+void EdgeItem::setToPoint( int x, int y )
+{
+    setPoints( startPoint().x(), startPoint().y(), x, y );
+}
+
+
+void NodeItem::moveBy(double dx, double dy)
+{
+    double nx = x() + dx;
+    double ny = y() + dy;
+    if ( graph->moving != this ) {
+	nx = TQMAX( width()/2, nx );
+	ny = TQMAX( height()/2, ny );
+	nx = TQMIN( canvas()->width() - width()/2, nx );
+	ny = TQMIN( canvas()->height() - height()/2, ny );
+    }
+    TQCanvasEllipse::moveBy( nx-x(), ny-y() );
+    EdgeItemList::Iterator it;
+    for (  it = inList.begin(); it != inList.end(); ++it )
+	(*it)->setToPoint( int(x()), int(y()) );
+    for (  it = outList.begin(); it != outList.end(); ++it )
+	(*it)->setFromPoint( int(x()), int(y()) );
+}
+
+NodeItem::NodeItem( GraphWidgetPrivate* g )
+    : TQCanvasEllipse( 32, 32, g->canvas )
+{
+    graph = g;
+    graph->nodeItems.append( this );
+    setPen( *tp );
+    setBrush( *tb );
+    setZ( 128 );
+}
+
+void NodeItem::advance( int stage ) {
+	switch ( stage ) {
+	case 0:
+	    calcForce();
+	    break;
+	case 1:
+	    TQCanvasItem::advance(stage);
+	    break;
+	}
+}
+
+void NodeItem::calcForce() {
+    if ( graph->moving == this ) {
+	setVelocity( 0, 0 );
+	return;
+    }
+    double xvel = 0;
+    double yvel = 0;
+    for ( NodeItemList::Iterator it = graph->nodeItems.begin(); it != graph->nodeItems.end(); ++it ) {
+	NodeItem* n = (*it);
+	if ( n == this )
+	    continue;
+	double dx  = x() - n->x();
+	double dy  = y() - n->y();
+	double l = 2 * ( dx * dx + dy * dy );
+	if ( l > 0 ) {
+	    xvel = xvel + dx*260 / l;
+	    yvel = yvel + dy*260 / l;
+	}
+    }
+    double w = 1 + outList.count() + inList.count();
+    w *= 10;
+    EdgeItemList::Iterator it2;
+    EdgeItem * e;
+    NodeItem* n;
+    for ( it2 = outList.begin(); it2 != outList.end(); ++it2 ) {
+	e = (*it2);
+	n = e->to;
+	xvel = xvel - ( x() - n->x() ) / w;
+	yvel = yvel - ( y() - n->y() ) / w;
+    }
+    for ( it2 = inList.begin(); it2 != inList.end(); ++it2 ) {
+	e = (*it2);
+	n = e->from;
+	xvel = xvel - ( x() - n->x() ) / w;
+	yvel = yvel - ( y() - n->y() ) / w;
+    }
+    if ( TQABS( xvel ) < .1 && TQABS( yvel ) < .1 )
+	xvel = yvel = 0;
+   setVelocity( xvel, yvel );
+}
+
+
+class FigureEditor : public TQCanvasView {
+public:
+    FigureEditor( GraphWidgetPrivate *g, TQWidget* parent=0, const char* name=0, WFlags f=0);
+
+    TQSize sizeHint() const;
+
+
+protected:
+    void contentsMousePressEvent(TQMouseEvent*);
+    void contentsMouseReleaseEvent(TQMouseEvent*);
+    void contentsMouseMoveEvent(TQMouseEvent*);
+
+
+    void resizeEvent( TQResizeEvent* );
+    void showEvent( TQShowEvent* );
+    void hideEvent( TQHideEvent* e);
+
+private:
+    void initialize();
+    TQPoint moving_start;
+    GraphWidgetPrivate* graph;
+};
+
+
+FigureEditor::FigureEditor(
+	GraphWidgetPrivate* g, TQWidget* parent,
+	const char* name, WFlags f) :
+    TQCanvasView(g->canvas, parent,name,f)
+{
+    graph = g;
+}
+
+void FigureEditor::contentsMousePressEvent(TQMouseEvent* e)
+{
+    TQCanvasItemList l=canvas()->collisions(e->pos());
+    for (TQCanvasItemList::Iterator it=l.begin(); it!=l.end(); ++it) {
+	if ((*it)->rtti()==bounce_rtti )
+	    continue;
+	graph->moving = *it;
+	moving_start = e->pos();
+	return;
+    }
+    graph->moving = 0;
+}
+
+void FigureEditor::contentsMouseReleaseEvent(TQMouseEvent* )
+{
+    if ( graph->moving )
+	graph->moving = 0;
+}
+
+void FigureEditor::contentsMouseMoveEvent(TQMouseEvent* e)
+{
+    if ( graph->moving ) {
+	graph->moving->moveBy(e->pos().x() - moving_start.x(),
+		       e->pos().y() - moving_start.y());
+	moving_start = e->pos();
+	canvas()->update();
+    }
+}
+
+class BouncyText : public TQCanvasText {
+    void initPos();
+    void initSpeed();
+public:
+    int rtti() const;
+    BouncyText(const TQString&, TQFont, TQCanvas*);
+    void advance(int);
+};
+
+BouncyText::BouncyText( const TQString& text, TQFont f, TQCanvas* canvas) :
+    TQCanvasText(text, f, canvas)
+{
+    setAnimated(TRUE);
+    initPos();
+}
+
+
+int BouncyText::rtti() const
+{
+    return bounce_rtti;
+}
+
+void BouncyText::initPos()
+{
+    initSpeed();
+    int trial=1000;
+    do {
+	move(rand()%(canvas()->width()-boundingRect().width()),
+	     rand()%(canvas()->height()-boundingRect().height()));
+	advance(0);
+    } while (trial-- && xVelocity()==0.0 && yVelocity()==0.0);
+}
+
+void BouncyText::initSpeed()
+{
+    const double speed = 2.0;
+    double d = (double)(rand()%1024) / 1024.0;
+    double e = (double)(rand()%1024) / 1024.0;
+
+    if ( d < .5 )
+	d = -1 - d;
+    else
+	d = d + 1;
+    if ( e < .5 )
+	e = -1 - e;
+    else
+	e = e + 1;
+
+    setVelocity( d*speed, e * speed );
+}
+
+void BouncyText::advance( int stage )
+{
+    switch ( stage ) {
+      case 0: {
+	double vx = xVelocity();
+	double vy = yVelocity();
+
+	if ( vx == 0.0 && vy == 0.0 ) {
+	    // stopped last turn
+	    initSpeed();
+	    vx = xVelocity();
+	    vy = yVelocity();
+	}
+
+	TQRect r = boundingRect();
+	r.moveBy( int(vx), int(vy) );
+
+	if ( r.left() < 0 || r.right() > canvas()->width() )
+	    vx = -vx;
+	if ( r.top() < 0 || r.bottom() > canvas()->height() )
+	    vy = -vy;
+
+	r = boundingRect();
+	r.moveBy( int(vx), int(vy) );
+	if ( r.left() < 0 || r.right() > canvas()->width() )
+	    vx = 0;
+	if ( r.top() < 0 || r.bottom() > canvas()->height() )
+	    vy = 0;
+
+	setVelocity( vx, vy );
+      } break;
+      case 1:
+	TQCanvasItem::advance( stage );
+	break;
+    }
+}
+
+GraphWidget::GraphWidget( TQWidget *parent, const char *name)
+    : TQWidget( parent, name )
+{
+    d = new GraphWidgetPrivate;
+    d->canvas = 0;
+    TQVBoxLayout* vb = new TQVBoxLayout(  this, 11, 6 );
+    d->editor = new FigureEditor( d, this  );
+    vb->addWidget( d->editor );
+    TQHBoxLayout* hb = new TQHBoxLayout(  vb );
+    hb->addWidget( new TQLabel("Slow", this ) );
+    TQSlider* slider = new TQSlider( 0, 300, 25, d->speed, Horizontal, this );
+    connect( slider, SIGNAL( valueChanged(int) ), this, SLOT( setSpeed(int) ) );
+    hb->addWidget( slider );
+    hb->addWidget( new TQLabel("Fast", this ) );
+    hb->addSpacing( 10 );
+    TQPushButton* btn = new TQPushButton( "Shuffle Nodes", this );
+    connect( btn, SIGNAL( clicked() ), this, SLOT( shuffle() ) );
+    hb->addWidget( btn );
+}
+
+
+GraphWidget::~GraphWidget()
+{
+    delete d;
+}
+
+void GraphWidget::setSpeed(int s)
+{
+    d->speed = s;
+    if ( isVisible() && d->canvas )
+	d->canvas->setAdvancePeriod( SPEED2ADVANCE( s ) );
+}
+
+void GraphWidget::shuffle()
+{
+
+    for ( NodeItemList::Iterator it = d->nodeItems.begin(); it != d->nodeItems.end(); ++it ) {
+	NodeItem* ni = (*it);
+	ni->move(rand()%(d->canvas->width()-ni->width()),rand()%(d->canvas->height()-ni->height()));
+    }
+}
+
+
+TQSize FigureEditor::sizeHint() const
+{
+    return TQSize( 600, 400 );
+}
+
+void FigureEditor::resizeEvent( TQResizeEvent* e )
+{
+    if ( canvas() )
+	canvas()->resize( contentsRect().width(), contentsRect().height() );
+    TQCanvasView::resizeEvent( e );
+}
+
+void FigureEditor::showEvent( TQShowEvent* )
+{
+    initialize();
+    canvas()->setAdvancePeriod( SPEED2ADVANCE(graph->speed) );
+}
+
+void FigureEditor::hideEvent( TQHideEvent* )
+{
+    initialize();
+    canvas()->setAdvancePeriod( -10 );
+}
+
+void FigureEditor::initialize()
+{
+    if ( canvas() )
+	return;
+    resize( sizeHint() );
+    graph->canvas = new TQCanvas( contentsRect().width(), contentsRect().height() );
+    if ( !tb ) tb = new TQBrush( TQt::red );
+    if ( !tp ) tp = new TQPen( TQt::black );
+    srand( TQTime::currentTime().msec() );
+    int nodecount = 0;
+
+    int rows = 3;
+    int cols = 3;
+
+    TQMemArray<NodeItem*> lastRow(cols);
+    for ( int r = 0; r < rows; r++ ) {
+	NodeItem *prev = 0;
+	for ( int c = 0; c < cols; c++ ) {
+	    NodeItem *ni = new NodeItem( graph );
+	    ni->setAnimated( TRUE );
+	    nodecount++;
+	    ni->move(rand()%(graph->canvas->width()-ni->width()),rand()%(graph->canvas->height()-ni->height()));
+
+	    if ( r > 0 )
+		(new EdgeItem( lastRow[c], ni, graph->canvas ))->show();
+	    if ( prev )
+		(new EdgeItem( prev, ni, graph->canvas ))->show();
+	    prev = ni;
+	    lastRow[c] = ni;
+	    ni->show();
+	}
+    }
+
+    graph->canvas->advance();
+
+    TQCanvasItem* i = new BouncyText( tr( "Drag the nodes around!" ), TQFont("helvetica", 24), graph->canvas);
+    i->show();
+    setCanvas( graph->canvas );
+    setMinimumSize( 600, 400 );
+    setSizePolicy( TQSizePolicy::MinimumExpanding, TQSizePolicy::MinimumExpanding );
+}