QtCollider/QcWidgetFactory.h

   1 /************************************************************************
   2 *
   3 * Copyright 2010-2012 Jakob Leben (jakob.leben@gmail.com)
   4 *
   5 * This file is part of SuperCollider Qt GUI.
   6 *
   7 * This program is free software: you can redistribute it and/or modify
   8 * it under the terms of the GNU General Public License as published by
   9 * the Free Software Foundation, either version 3 of the License, or
  10 * (at your option) any later version.
  11 *
  12 * This program is distributed in the hope that it will be useful,
  13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 * GNU General Public License for more details.
  16 *
  17 * You should have received a copy of the GNU General Public License
  18 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 *
  20 ************************************************************************/
  21
  22 #ifndef QC_WIDGET_FACTORY_H
  23 #define QC_WIDGET_FACTORY_H
  24
  25 #include "QcObjectFactory.h"
  26 #include "QWidgetProxy.h"
  27
  28 #include <QLayout>
  29
  30 template <class QWIDGET>
  31 class QcWidgetFactory : public QcObjectFactory<QWIDGET>
  32 {
  33 public:
  34
  35   virtual QObjectProxy *newInstance( PyrObject *scObject, QtCollider::Variant arg[10] ) {
  36
  37     // Omit the first two arguments - parent and bounds
  38
  39     QWIDGET *w;
  40
  41     if( arg[2].type() == QMetaType::Void ) {
  42       w = new QWIDGET;
  43     }
  44     else {
  45       QObject *obj = QWIDGET::staticMetaObject.newInstance(
  46         arg[2].asGenericArgument(),
  47         arg[3].asGenericArgument(),
  48         arg[4].asGenericArgument(),
  49         arg[5].asGenericArgument(),
  50         arg[6].asGenericArgument(),
  51         arg[7].asGenericArgument(),
  52         arg[8].asGenericArgument(),
  53         arg[9].asGenericArgument()
  54       );
  55
  56       w = qobject_cast<QWIDGET*>(obj);
  57       if( !w ) {
  58         qcNoConstructorMsg( QcObjectFactory<QWIDGET>::metaObject(), 8, &arg[2] );
  59         return 0;
  60       }
  61     }
  62
  63     QObjectProxy *prox( proxy(w, scObject) );
  64
  65     // check if parent arg is valid;
  66
  67     QObjectProxy *parentProxy( arg[0].value<QObjectProxy*>() );
  68
  69
  70     // set requested geometry
  71
  72     QRect r( arg[1].value<QRectF>().toRect() );
  73     if( r.size().isEmpty() ) r.setSize( w->sizeHint() );
  74
  75     w->setGeometry( r );
  76
  77     // automatically support drag and drop
  78
  79     w->setAcceptDrops( true );
  80
  81     // set parent
  82
  83     QWidget *parent = parentProxy ? qobject_cast<QWidget*>( parentProxy->object() ) : 0;
  84
  85     if( parent ) {
  86
  87       // Ok, we have the parent, so stuff the child in
  88
  89       const QMetaObject *mo = parent->metaObject();
  90       bool ok = mo->invokeMethod( parent, "addChild", Q_ARG( QWidget*, w ) );
  91
  92       if( !ok ) w->setParent( parent );
  93
  94       w->show();
  95     }
  96
  97     return prox;
  98   }
  99
 100 protected:
 101
 102   virtual QObjectProxy * proxy( QWIDGET *w, PyrObject *sc_obj )
 103   {
 104     QWidgetProxy *prox( new QWidgetProxy( w, sc_obj ) );
 105     initialize( prox, w );
 106     return prox;
 107   }
 108
 109   virtual void initialize( QWidgetProxy *proxy, QWIDGET *obj ) {};
 110 };
 111
 112 #define QC_DECLARE_QWIDGET_FACTORY( QWIDGET ) QC_DECLARE_FACTORY( QWIDGET, QcWidgetFactory<QWIDGET> )
 113
 114 #endif