Added initial cut of ComboBox

2014-05-16 19:24:58 +00:00
parent 3e00764649
commit 87fd1d38fb
6 changed files with 245 additions and 4 deletions
--- a/src/osgUI/ComboBox.cpp
+++ b/src/osgUI/ComboBox.cpp
@@ -0,0 +1,128 @@
+/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2014 Robert Osfield
+ *
+ * This library is open source and may be redistributed and/or modified under
+ * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
+ * (at your option) any later version.  The full license is in LICENSE file
+ * included with this distribution, and on the openscenegraph.org website.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * OpenSceneGraph Public License for more details.
+*/
+
+
+#include <osgUI/ComboBox>
+#include <osgText/String>
+#include <osgText/Font>
+#include <osgText/Text>
+#include <osg/Notify>
+#include <osg/io_utils>
+
+using namespace osgUI;
+
+ComboBox::ComboBox()
+{
+}
+
+ComboBox::ComboBox(const osgUI::ComboBox& combobox, const osg::CopyOp& copyop):
+    Widget(combobox, copyop),
+    _items(combobox._items)
+{
+}
+
+bool ComboBox::handleImplementation(osgGA::EventVisitor* ev, osgGA::Event* event)
+{
+    // OSG_NOTICE<<"ComboBox::handleImplementation"<<std::endl;
+
+    osgGA::GUIEventAdapter* ea = event->asGUIEventAdapter();
+    if (!ea) return false;
+
+    switch(ea->getEventType())
+    {
+        case(osgGA::GUIEventAdapter::SCROLL):
+            OSG_NOTICE<<"Scroll "<<std::endl;
+            if (ea->getScrollingMotion()==osgGA::GUIEventAdapter::SCROLL_DOWN)
+            {
+                OSG_NOTICE<<"Scroll Down`"<<std::endl;
+                if (getCurrentItem()<getNumItems()-1) setCurrentItem(getCurrentItem()+1);
+            }
+            else if (ea->getScrollingMotion()==osgGA::GUIEventAdapter::SCROLL_UP)
+            {
+                OSG_NOTICE<<"Scroll Up`"<<std::endl;
+                if (getCurrentItem()>0) setCurrentItem(getCurrentItem()-1);
+            }
+            break;
+        case(osgGA::GUIEventAdapter::PUSH):
+            OSG_NOTICE<<"Button pressed "<<std::endl;
+            break;
+        case(osgGA::GUIEventAdapter::RELEASE):
+            OSG_NOTICE<<"Button release "<<std::endl;
+            break;
+        default:
+            break;
+    }
+
+    return false;
+}
+
+void ComboBox::enterImplementation()
+{
+    OSG_NOTICE<<"ComboBox enter"<<std::endl;
+}
+
+
+void ComboBox::leaveImplementation()
+{
+    OSG_NOTICE<<"ComboBox leave"<<std::endl;
+}
+
+void ComboBox::setCurrentItem(unsigned int i)
+{
+    OSG_NOTICE << "ComboBox::setCurrentItem("<<i<<")"<<std::endl;
+    _currentItem = i;
+    if (_switch.valid()) _switch->setSingleChildOn(_currentItem);
+}
+
+
+void ComboBox::createGraphicsImplementation()
+{
+
+    if (_switch.valid() && _switch->getNumChildren()==_items.size())
+    {
+        OSG_NOTICE<<"Need to update existing scene graph"<<std::endl;
+        _graphicsInitialized = true;
+    }
+    else
+    {
+        OSG_NOTICE<<"ComboBox::createGraphicsImplementation()"<<std::endl;
+
+        Widget::createGraphicsImplementation();
+
+        Style* style = (getStyle()!=0) ? getStyle() : Style::instance().get();
+
+        _switch = new osg::Switch;
+        addChild(_switch.get());
+
+        if (!_items.empty())
+        {
+            for(Items::iterator itr = _items.begin();
+                itr != _items.end();
+                ++itr)
+            {
+                Item* item = itr->get();
+                OSG_NOTICE<<"Creating item "<<item->getText()<<", "<<item->getColor()<<std::endl;
+                osg::ref_ptr<osg::Group> group = new osg::Group;
+                if (item->getColor().a()!=0.0f) group->addChild( style->createPanel(_extents, item->getColor()) );
+                if (!item->getText().empty()) group->addChild( style->createText(_extents, getAlignmentSettings(), getTextSettings(), item->getText()) );
+                _switch->addChild(group.get());
+            }
+        }
+        else
+        {
+            _switch->addChild( style->createPanel(_extents, osg::Vec4(1.0f,1.0f,1.0f,1.0f)) );
+        }
+
+        _switch->setSingleChildOn(_currentItem);
+    }
+}