Add Qt3 development HEAD version

1 files changed, 195 insertions, 0 deletions

diff --git a/examples/demo/opengl/glcontrolwidget.cpp b/examples/demo/opengl/glcontrolwidget.cpp
new file mode 100644
index 0000000..d81d328
--- /dev/null
+++ b/examples/demo/opengl/glcontrolwidget.cpp
@@ -0,0 +1,195 @@
+#include "glcontrolwidget.h"
+
+#include <qcursor.h>
+#include <qtimer.h>
+
+#include <math.h>
+
+GLControlWidget::GLControlWidget( QWidget *parent, const char *name, QGLWidget *share, WFlags f )
+: QGLWidget( parent, name, share, f ),
+  xRot(0),yRot(0),zRot(0),xTrans(0),yTrans(0),zTrans(-10.0),scale(5.0), animation(TRUE), wasAnimated(FALSE), delay( 50 )
+{
+    setCursor( pointingHandCursor  );
+    timer = new QTimer( this );
+    connect( timer, SIGNAL(timeout()), SLOT(animate()) );
+    timer->start( delay );
+}
+
+void GLControlWidget::transform()
+{
+    glTranslatef( xTrans, yTrans, zTrans );
+    glScalef( scale, scale, scale );
+
+    glRotatef( xRot, 1.0, 0.0, 0.0 );
+    glRotatef( yRot, 0.0, 1.0, 0.0 );
+    glRotatef( zRot, 0.0, 0.0, 1.0 );
+}
+
+void GLControlWidget::drawText()
+{
+    glPushAttrib( GL_LIGHTING_BIT | GL_TEXTURE_BIT );
+    glDisable( GL_LIGHTING );
+    glDisable( GL_TEXTURE_2D );
+    qglColor( white );
+    QString str( "Rendering text in OpenGL is easy with Qt" );
+    QFontMetrics fm( font() );
+    renderText( (width() - fm.width( str )) / 2, 15, str );
+    QFont f( "courier", 8 );
+    QFontMetrics fmc( f );
+    qglColor( QColor("skyblue") );
+    int x, y, z;
+    x = (xRot >= 0) ? (int) xRot % 360 : 359 - (QABS((int) xRot) % 360);
+    y = (yRot >= 0) ? (int) yRot % 360 : 359 - (QABS((int) yRot) % 360);
+    z = (zRot >= 0) ? (int) zRot % 360 : 359 - (QABS((int) zRot) % 360);
+    str.sprintf( "Rot X: %03d - Rot Y: %03d - Rot Z: %03d", x, y, z );
+    renderText( (width() - fmc.width( str )) / 2, height() - 15, str, f );
+    glPopAttrib();
+}
+
+/*!
+  Set the rotation angle of the object to \e degrees around the X axis.
+*/
+void GLControlWidget::setXRotation( double degrees )
+{
+    xRot = (GLfloat)fmod(degrees, 360.0);
+    updateGL();
+}
+
+/*!
+  Set the rotation angle of the object to \e degrees around the Y axis.
+*/
+void GLControlWidget::setYRotation( double degrees )
+{
+    yRot = (GLfloat)fmod(degrees, 360.0);
+    updateGL();
+}
+
+
+/*!
+  Set the rotation angle of the object to \e degrees around the Z axis.
+*/
+void GLControlWidget::setZRotation( double degrees )
+{
+    zRot = (GLfloat)fmod(degrees, 360.0);
+    updateGL();
+}
+
+void GLControlWidget::setScale( double s )
+{
+    scale = s;
+    updateGL();
+}
+
+void GLControlWidget::setXTrans( double x )
+{
+    xTrans = x;
+    updateGL();
+}
+
+void GLControlWidget::setYTrans( double y )
+{
+    yTrans = y;
+    updateGL();
+}
+
+void GLControlWidget::setZTrans( double z )
+{
+    zTrans = z;
+    updateGL();
+}
+
+void GLControlWidget::setRotationImpulse( double x, double y, double z )
+{
+    setXRotation( xRot + 180*x );
+    setYRotation( yRot + 180*y );
+    setZRotation( zRot - 180*z );
+}
+
+void GLControlWidget::setTranslationImpulse( double x, double y, double z )
+{
+    setXTrans( xTrans + 2*x );
+    setYTrans( yTrans - 2*y );
+    setZTrans( zTrans + 2*z );
+}
+
+void GLControlWidget::mousePressEvent( QMouseEvent *e )
+{
+    e->accept();
+    oldPos = e->pos();
+}
+
+void GLControlWidget::mouseReleaseEvent( QMouseEvent *e )
+{
+    e->accept();
+    oldPos = e->pos();
+}
+
+void GLControlWidget::mouseMoveEvent( QMouseEvent *e )
+{
+    e->accept();
+    double dx = e->x() - oldPos.x();
+    double dy = e->y() - oldPos.y();
+
+    oldPos = e->pos();
+
+    double rx = dx / width();
+    double ry = dy / height();
+
+    if ( e->state() == LeftButton )
+	setRotationImpulse( ry, rx, 0 );
+    else if ( e->state() == RightButton )
+	setRotationImpulse( ry, 0, rx );
+    else if ( e->state() == MidButton )
+	setTranslationImpulse( rx, ry, 0 );
+    else if ( e->state() == ( LeftButton | RightButton ) )
+	setTranslationImpulse( rx, 0, ry );
+}
+
+void GLControlWidget::wheelEvent( QWheelEvent *e )
+{
+    e->accept();
+    if ( scale <= ( (double)e->delta() / 1000 ) )
+	return;
+    setScale( scale - ( (double)e->delta() / 1000 ));
+}
+
+void GLControlWidget::mouseDoubleClickEvent( QMouseEvent * )
+{
+    if ( delay <= 0 )
+	return;
+
+    animation = !animation;
+    if ( animation )
+	timer->start( delay );
+    else
+	timer->stop();
+}
+
+void GLControlWidget::showEvent( QShowEvent *e )
+{
+    if ( wasAnimated && !timer->isActive() )
+	timer->start( delay );
+
+    QGLWidget::showEvent( e );
+}
+
+void GLControlWidget::hideEvent( QHideEvent *e )
+{
+    wasAnimated = timer->isActive();
+    timer->stop();
+    QGLWidget::hideEvent( e );
+}
+
+void GLControlWidget::animate()
+{
+}
+
+void GLControlWidget::setAnimationDelay( int ms )
+{
+    timer->stop();
+    delay = ms;
+    if ( animation ) {
+	wasAnimated = TRUE;
+	timer->start( delay );
+    }
+}