From 6bd7f577707c552510403e6b280ab32f34d19258 Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Sun, 1 Oct 2006 16:10:33 +0000
Subject: [PATCH] Added FLTK example app - osgsimpleviewerFLTK.

---
 examples/osgsimpleviewerFLTK/GNUmakefile      |  16 +++
 examples/osgsimpleviewerFLTK/GNUmakefile.inst |  19 ++++
 .../osgsimpleviewerFLTK.cpp                   | 107 ++++++++++++++++++
 3 files changed, 142 insertions(+)
 create mode 100644 examples/osgsimpleviewerFLTK/GNUmakefile
 create mode 100644 examples/osgsimpleviewerFLTK/GNUmakefile.inst
 create mode 100644 examples/osgsimpleviewerFLTK/osgsimpleviewerFLTK.cpp

diff --git a/examples/osgsimpleviewerFLTK/GNUmakefile b/examples/osgsimpleviewerFLTK/GNUmakefile
new file mode 100644
index 000000000..a3a1ab26b
--- /dev/null
+++ b/examples/osgsimpleviewerFLTK/GNUmakefile
@@ -0,0 +1,16 @@
+TOPDIR = ../..
+include $(TOPDIR)/Make/makedefs
+
+CXXFILES =\
+	osgsimpleviewerFLTK.cpp\
+
+LIBS     += -losgGA -losgDB -losgUtil -losg -lfltk -lfltk_gl $(GL_LIBS) $(OTHER_LIBS)
+
+INSTFILES = \
+	$(CXXFILES)\
+	GNUmakefile.inst=GNUmakefile
+
+EXEC = osgsimpleviewerFLTK
+
+
+include $(TOPDIR)/Make/makerules 
diff --git a/examples/osgsimpleviewerFLTK/GNUmakefile.inst b/examples/osgsimpleviewerFLTK/GNUmakefile.inst
new file mode 100644
index 000000000..5afed00d2
--- /dev/null
+++ b/examples/osgsimpleviewerFLTK/GNUmakefile.inst
@@ -0,0 +1,19 @@
+TOPDIR = ../..
+include $(TOPDIR)/Make/makedefs
+
+CXXFILES =\
+	osgsimpleviewerQT3.cpp\
+
+LIBS     += -losgDB -losgUtil -losg -lqt-mt $(GL_LIBS) $(X_LIBS) $(OTHER_LIBS) 
+
+EXEC = osgsimpleviewerQT3
+
+INC      += -I/usr/lib/qt3/include
+
+ifeq ($(ARCH),64)
+  LDFLAGS  += -L/usr/lib/qt3/lib64
+else
+  LDFLAGS  += -L/usr/lib/qt3/lib
+endif
+
+include $(TOPDIR)/Make/makerules
diff --git a/examples/osgsimpleviewerFLTK/osgsimpleviewerFLTK.cpp b/examples/osgsimpleviewerFLTK/osgsimpleviewerFLTK.cpp
new file mode 100644
index 000000000..5e87f18c2
--- /dev/null
+++ b/examples/osgsimpleviewerFLTK/osgsimpleviewerFLTK.cpp
@@ -0,0 +1,107 @@
+// C++ source file - (C) 2003 Robert Osfield, released under the OSGPL.
+// (C) 2005 Mike Weiblen http://mew.cx/ released under the OSGPL.
+// Simple example using GLUT to create an OpenGL window and OSG for rendering.
+// Derived from osgGLUTsimple.cpp and osgkeyboardmouse.cpp
+
+#include <osgGA/SimpleViewer>
+#include <osgGA/TrackballManipulator>
+#include <osgDB/ReadFile>
+
+#include <FL/Fl.H>
+#include <FL/Fl_Gl_Window.H>
+
+#include <iostream>
+
+class Fl_OSG_Widget : public Fl_Gl_Window, public osgGA::SimpleViewer
+{
+public:
+
+    Fl_OSG_Widget(int x, int y, int w, int h, const char *label=0);
+    virtual ~Fl_OSG_Widget() {}
+
+    virtual void resize(int x, int y, int w, int h);
+
+protected:
+
+    virtual int handle(int event);
+    virtual void draw();
+
+};
+
+Fl_OSG_Widget::Fl_OSG_Widget(int x, int y, int w, int h, const char *label):
+    Fl_Gl_Window(x, y, w, h, label)
+{
+    getEventQueue()->windowResize(x, y, w, h );
+}
+
+void Fl_OSG_Widget::resize(int x, int y, int w, int h)
+{
+    getEventQueue()->windowResize(x, y, w, h );
+    Fl_Gl_Window::resize(x,y,w,h);
+}
+
+int Fl_OSG_Widget::handle(int event)
+{
+    switch(event){
+        case FL_PUSH:
+            getEventQueue()->mouseButtonPress(Fl::event_x(), Fl::event_y(), Fl::event_button());
+            return 1;
+        case FL_MOVE:
+        case FL_DRAG:
+            getEventQueue()->mouseMotion(Fl::event_x(), Fl::event_y());
+            return 1;
+        case FL_RELEASE:
+            getEventQueue()->mouseButtonRelease(Fl::event_x(), Fl::event_y(), Fl::event_button());
+            return 1;
+        case FL_KEYDOWN:
+            getEventQueue()->keyPress((osgGA::GUIEventAdapter::KeySymbol)Fl::event_key());
+            return 1;
+        case FL_KEYUP:
+            getEventQueue()->keyRelease((osgGA::GUIEventAdapter::KeySymbol)Fl::event_key());
+            return 1;
+        default:
+            // pass other events to the base class
+            return Fl_Gl_Window::handle(event);
+    }
+}
+
+void Fl_OSG_Widget::draw()
+{
+    frame();
+}
+
+void idle_cb()
+{
+    Fl::redraw();
+}
+
+int main( int argc, char **argv )
+{
+    
+    if (argc<2)
+    {
+        std::cout << argv[0] <<": requires filename argument." << std::endl;
+        return 1;
+    }
+
+    // load the scene.
+    osg::ref_ptr<osg::Node> loadedModel = osgDB::readNodeFile(argv[1]);
+    if (!loadedModel)
+    {
+        std::cout << argv[0] <<": No data loaded." << std::endl;
+        return 1;
+    }
+
+
+    Fl_OSG_Widget viewerWindow(100,100,800,600);
+    viewerWindow.resizable(&viewerWindow);
+
+    viewerWindow.setSceneData(loadedModel.get());
+    viewerWindow.setCameraManipulator(new osgGA::TrackballManipulator);
+
+    viewerWindow.show();
+    
+    Fl::set_idle(idle_cb);
+    
+    return Fl::run();
+}