root/OpenSceneGraph/trunk/examples/osgwidgetshader/osgwidgetshader.cpp @ 8588

// -*-c++-*- osgWidget - Code by: Jeremy Moles (cubicool) 2007-2008
// $Id: osgwidgetshader.cpp 28 2008-03-26 15:26:48Z cubicool $

#include <osgWidget/Util>
#include <osgWidget/WindowManager>
#include <osgWidget/Canvas>

const unsigned int MASK_2D = 0xF0000000;

osgWidget::Widget* createWidget(
        const std::string&       name,
        osgWidget::color_type    col,
        osgWidget::Widget::LAYER layer
) {
        osgWidget::Widget* widget = new osgWidget::Widget(name, 200.0f, 200.0f);

        widget->setColor(col, col, col, 0.2f);
        widget->setLayer(layer);

        return widget;
}

int main(int argc, char** argv) {
        osgViewer::Viewer viewer;

        osgWidget::WindowManager* wm = new osgWidget::WindowManager(
                &viewer,
                1280.0f,
                1024.0f,
                MASK_2D
        );
        
        osgWidget::Canvas* canvas = new osgWidget::Canvas("canvas");

        canvas->attachMoveCallback();
        canvas->attachScaleCallback();

        canvas->addWidget(
                createWidget("w1", 0.2f, osgWidget::Widget::LAYER_LOW),
                0.0f,
                0.0f
        );
        
        canvas->addWidget(
                createWidget("w2", 0.4f, osgWidget::Widget::LAYER_MIDDLE),
                200.0f,
                0.0f
        );

        canvas->addWidget(
                createWidget("w3", 0.6f, osgWidget::Widget::LAYER_HIGH),
                400.0f,
                0.0f
        );


        wm->addChild(canvas);

        osg::Program* program = new osg::Program();

        program->addShader(osg::Shader::readShaderFile(
                osg::Shader::VERTEX,
                "osgWidget/osgwidgetshader-vert.glsl"
        ));
        
        program->addShader(osg::Shader::readShaderFile(
                osg::Shader::FRAGMENT,
                "osgWidget/osgwidgetshader-frag.glsl"
        ));

        canvas->getGeode()->getOrCreateStateSet()->setAttribute(program);

        return osgWidget::createExample(viewer, wm);
}