92 lines
2.5 KiB
C++
92 lines
2.5 KiB
C++
// -*-c++-*- osgWidget - Code by: Jeremy Moles (cubicool) 2007-2008
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// $Id$
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#include <osgDB/ReadFile>
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#include <osgWidget/Util>
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#include <osgWidget/WindowManager>
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#include <osgWidget/Canvas>
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const unsigned int MASK_2D = 0xF0000000;
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struct UpdateProgressNode: public osg::NodeCallback {
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float start;
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float done;
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UpdateProgressNode():
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start (0.0f),
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done (5.0f) {
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}
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virtual void operator()(osg::Node* node, osg::NodeVisitor* nv) {
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const osg::FrameStamp* fs = nv->getFrameStamp();
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float t = fs->getSimulationTime();
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if(start == 0.0f) start = t;
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float width = ((t - start) / done) * 512.0f;
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float percent = (width / 512.0f) * 100.0f;
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if(width < 1.0f || width > 512.0f) return;
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osgWidget::Window* window = dynamic_cast<osgWidget::Window*>(node);
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if(!window) return;
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osgWidget::Widget* w = window->getByName("pMeter");
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osgWidget::Label* l = dynamic_cast<osgWidget::Label*>(window->getByName("pLabel"));
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if(!w || !l) return;
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w->setWidth(width);
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w->setTexCoordRegion(0.0f, 0.0f, width, 64.0f);
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std::ostringstream ss;
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ss << osg::round(percent) << "% Done" << std::endl;
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l->setLabel(ss.str());
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}
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};
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int main(int argc, char** argv) {
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osgViewer::Viewer viewer;
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osgWidget::WindowManager* wm = new osgWidget::WindowManager(
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&viewer,
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1280.0f,
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1024.0f,
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MASK_2D,
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osgWidget::WindowManager::WM_PICK_DEBUG
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);
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osgWidget::Canvas* canvas = new osgWidget::Canvas("canvas");
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osgWidget::Widget* pOutline = new osgWidget::Widget("pOutline", 512.0f, 64.0f);
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osgWidget::Widget* pMeter = new osgWidget::Widget("pMeter", 0.0f, 64.0f);
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osgWidget::Label* pLabel = new osgWidget::Label("pLabel", "0% Done");
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pOutline->setImage("osgWidget/progress-outline.png", true);
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pOutline->setLayer(osgWidget::Widget::LAYER_MIDDLE, 2);
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pMeter->setImage("osgWidget/progress-meter.png");
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pMeter->setColor(0.7f, 0.1f, 0.1f, 0.7f);
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pMeter->setLayer(osgWidget::Widget::LAYER_MIDDLE, 1);
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pLabel->setFont("fonts/VeraMono.ttf");
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pLabel->setFontSize(20);
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pLabel->setFontColor(1.0f, 1.0f, 1.0f, 1.0f);
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pLabel->setSize(512.0f, 64.0f);
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pLabel->setLayer(osgWidget::Widget::LAYER_MIDDLE, 3);
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canvas->setOrigin(300.0f, 300.0f);
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canvas->addWidget(pMeter, 0.0f, 0.0f);
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canvas->addWidget(pOutline, 0.0f, 0.0f);
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canvas->addWidget(pLabel, 0.0f, 0.0f);
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canvas->getBackground()->setColor(0.0f, 0.0f, 0.0f, 0.0f);
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canvas->setUpdateCallback(new UpdateProgressNode());
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wm->addChild(canvas);
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return osgWidget::createExample(viewer, wm, osgDB::readNodeFile("cow.osg"));
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}
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