Add Qt3 development HEAD version

1 files changed, 214 insertions, 0 deletions

diff --git a/examples/opengl/glpixmap/globjwin.cpp b/examples/opengl/glpixmap/globjwin.cpp
new file mode 100644
index 0000000..1b3269b
--- /dev/null
+++ b/examples/opengl/glpixmap/globjwin.cpp
@@ -0,0 +1,214 @@
+/****************************************************************************
+**
+** 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.
+**
+*****************************************************************************/
+
+/****************************************************************************
+**
+** Implementation of GLObjectWindow widget class
+**
+****************************************************************************/
+
+
+#include <qpushbutton.h>
+#include <qslider.h>
+#include <qlayout.h>
+#include <qframe.h>
+#include <qlabel.h>
+#include <qmenubar.h>
+#include <qpopupmenu.h>
+#include <qapplication.h>
+#include <qkeycode.h>
+#include <qpixmap.h>
+#include <qimage.h>
+#include <qpainter.h>
+#include "globjwin.h"
+#include "glbox.h"
+
+
+GLObjectWindow::GLObjectWindow( QWidget* parent, const char* name )
+    : QWidget( parent, name )
+{
+    // Create a menu
+    file = new QPopupMenu( this );
+    file->setCheckable( TRUE );
+    file->insertItem( "Grab Frame Buffer", this, SLOT(grabFrameBuffer()) );
+    file->insertItem( "Render Pixmap", this, SLOT(makePixmap()) );
+    file->insertItem( "Render Pixmap Hidden", this, SLOT(makePixmapHidden()) );
+    file->insertSeparator();
+    fixMenuItemId = file->insertItem( "Use Fixed Pixmap Size", this, 
+				      SLOT(useFixedPixmapSize()) );
+    file->insertSeparator();
+    insertMenuItemId = file->insertItem( "Insert Pixmap Here", this, 
+					 SLOT(makePixmapForMenu()) );
+    file->insertSeparator();
+    file->insertItem( "Exit",  qApp, SLOT(quit()), CTRL+Key_Q );
+
+    // Create a menu bar
+    QMenuBar *m = new QMenuBar( this );
+    m->setSeparator( QMenuBar::InWindowsStyle );
+    m->insertItem("&File", file );
+
+    // Create nice frames to put around the OpenGL widgets
+    QFrame* f1 = new QFrame( this, "frame1" );
+    f1->setFrameStyle( QFrame::Sunken | QFrame::Panel );
+    f1->setLineWidth( 2 );
+
+    // Create an OpenGL widget
+    c1 = new GLBox( f1, "glbox1");
+
+    // Create a label that can display the pixmap
+    lb = new QLabel( this, "pixlabel" );
+    lb->setFrameStyle( QFrame::Sunken | QFrame::Panel );
+    lb->setLineWidth( 2 );
+    lb->setAlignment( AlignCenter );
+    lb->setMargin( 0 );
+    lb->setIndent( 0 );
+
+    // Create the three sliders; one for each rotation axis
+    QSlider* x = new QSlider ( 0, 360, 60, 0, QSlider::Vertical, this, "xsl" );
+    x->setTickmarks( QSlider::Left );
+    connect( x, SIGNAL(valueChanged(int)), c1, SLOT(setXRotation(int)) );
+
+    QSlider* y = new QSlider ( 0, 360, 60, 0, QSlider::Vertical, this, "ysl" );
+    y->setTickmarks( QSlider::Left );
+    connect( y, SIGNAL(valueChanged(int)), c1, SLOT(setYRotation(int)) );
+
+    QSlider* z = new QSlider ( 0, 360, 60, 0, QSlider::Vertical, this, "zsl" );
+    z->setTickmarks( QSlider::Left );
+    connect( z, SIGNAL(valueChanged(int)), c1, SLOT(setZRotation(int)) );
+
+
+    // Now that we have all the widgets, put them into a nice layout
+
+    // Put the sliders on top of each other
+    QVBoxLayout* vlayout = new QVBoxLayout( 20, "vlayout");
+    vlayout->addWidget( x );
+    vlayout->addWidget( y );
+    vlayout->addWidget( z );
+
+    // Put the GL widget inside the frame
+    QHBoxLayout* flayout1 = new QHBoxLayout( f1, 2, 2, "flayout1");
+    flayout1->addWidget( c1, 1 );
+
+    // Top level layout, puts the sliders to the left of the frame/GL widget
+    QHBoxLayout* hlayout = new QHBoxLayout( this, 20, 20, "hlayout");
+    hlayout->setMenuBar( m );
+    hlayout->addLayout( vlayout );
+    hlayout->addWidget( f1, 1 );
+    hlayout->addWidget( lb, 1 );
+
+}
+
+
+
+void GLObjectWindow::grabFrameBuffer()
+{
+    QImage img = c1->grabFrameBuffer();
+
+    // Convert image to pixmap so we can show it
+    QPixmap pm;
+    pm.convertFromImage( img, AvoidDither );
+    drawOnPixmap( &pm );
+    lb->setPixmap( pm );
+}
+
+
+
+void GLObjectWindow::makePixmap()
+{
+    // Make a pixmap to to be rendered by the gl widget
+    QPixmap pm;
+
+    // Render the pixmap, with either c1's size or the fixed size pmSz
+    if ( pmSz.isValid() )
+	pm = c1->renderPixmap( pmSz.width(), pmSz.height() );
+    else 
+	pm = c1->renderPixmap();
+
+    if ( !pm.isNull() ) {
+	// Present the pixmap to the user
+	drawOnPixmap( &pm );
+	lb->setPixmap( pm );
+    }
+    else {
+	lb->setText( "Failed to render Pixmap." );
+    }
+}
+
+
+void GLObjectWindow::makePixmapHidden()
+{
+    // Make a QGLWidget to draw the pixmap. This widget will not be shown.
+    GLBox* w = new GLBox( this, "temporary glwidget", c1 );
+
+    bool success = FALSE;
+    QPixmap pm;
+
+    if ( w->isValid() ) {
+	// Set the current rotation
+	w->copyRotation( *c1 );
+
+	// Determine wanted pixmap size
+	QSize sz = pmSz.isValid() ? pmSz : c1->size();
+
+	// Make our hidden glwidget render the pixmap
+	pm = w->renderPixmap( sz.width(), sz.height() );
+
+	if ( !pm.isNull() )
+	    success = TRUE;
+    }
+
+    if ( success ) {
+	// Present the pixmap to the user
+	drawOnPixmap( &pm );
+	lb->setPixmap( pm );
+    }
+    else {
+	lb->setText( "Failed to render Pixmap." );
+    }
+    delete w;
+}
+
+
+void GLObjectWindow::drawOnPixmap( QPixmap* pm )
+{
+    // Draw some text on the pixmap to differentiate it from the GL window
+
+    if ( pm->isNull() ) {
+	qWarning("Cannot draw on null pixmap");
+	return;
+    }
+    else {
+	QPainter p( pm );
+       p.setFont( QFont( "Helvetica", 18 ) );
+	p.setPen( white );
+	p.drawText( pm->rect(), AlignCenter, "This is a Pixmap" );
+    }
+}
+
+
+
+void GLObjectWindow::useFixedPixmapSize()
+{
+    if ( pmSz.isValid() ) {
+	pmSz = QSize();
+	file->setItemChecked( fixMenuItemId, FALSE );
+    }
+    else {
+	pmSz = QSize( 200, 200 );
+	file->setItemChecked( fixMenuItemId, TRUE );
+    }
+}
+
+
+void GLObjectWindow::makePixmapForMenu()
+{
+    QPixmap pm = c1->renderPixmap( 32, 32 );
+    if ( !pm.isNull() )
+	file->changeItem( pm, "Insert Pixmap Here", insertMenuItemId );
+}