6a67be2e32
forcing users to use osgDB::readRef*File() methods. The later is preferable as it closes a potential threading bug when using paging databases in conjunction
with the osgDB::Registry Object Cache. This threading bug occurs when one thread gets an object from the Cache via an osgDB::read*File() call where only
a pointer to the object is passed back, so taking a reference to the object is delayed till it gets reassigned to a ref_ptr<>, but at the same time another
thread calls a flush of the Object Cache deleting this object as it's referenceCount is now zero. Using osgDB::readREf*File() makes sure the a ref_ptr<> is
passed back and the referenceCount never goes to zero.
To ensure the OSG builds when OSG_PROVIDE_READFILE is to OFF the many cases of osgDB::read*File() usage had to be replaced with a ref_ptr<> osgDB::readRef*File()
usage. The avoid this change causing lots of other client code to be rewritten to handle the use of ref_ptr<> in place of C pointer I introduced a serious of
templte methods in various class to adapt ref_ptr<> to the underly C pointer to be passed to old OSG API's, example of this is found in include/osg/Group:
bool addChild(Node* child); // old method which can only be used with a Node*
tempalte<class T> bool addChild(const osg::ref_ptr<T>& child) { return addChild(child.get()); } // adapter template method
These changes together cover 149 modified files, so it's a large submission. This extent of changes are warrent to make use of the Object Cache
and multi-threaded loaded more robust.
git-svn-id: http://svn.openscenegraph.org/osg/OpenSceneGraph/branches/OpenSceneGraph-3.4@15165 16af8721-9629-0410-8352-f15c8da7e697
129 lines
3.5 KiB
C++
129 lines
3.5 KiB
C++
// -*-c++-*- osgWidget - Code by: Jeremy Moles (cubicool) 2007-2008
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// $Id: osgwidgetmenu.cpp 66 2008-07-14 21:54:09Z cubicool $
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#include <iostream>
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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/Box>
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#include <osgWidget/Label>
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// For now this is just an example, but osgWidget::Menu will later be it's own Window.
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// I just wanted to get this out there so that people could see it was possible.
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const unsigned int MASK_2D = 0xF0000000;
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const unsigned int MASK_3D = 0x0F000000;
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struct ColorLabel: public osgWidget::Label {
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ColorLabel(const char* label):
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osgWidget::Label("", "") {
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setFont("fonts/Vera.ttf");
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setFontSize(14);
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setFontColor(1.0f, 1.0f, 1.0f, 1.0f);
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setColor(0.3f, 0.3f, 0.3f, 1.0f);
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addHeight(18.0f);
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setCanFill(true);
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setLabel(label);
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setEventMask(osgWidget::EVENT_MOUSE_PUSH | osgWidget::EVENT_MASK_MOUSE_MOVE);
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}
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bool mousePush(double, double, const osgWidget::WindowManager*) {
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return true;
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}
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bool mouseEnter(double, double, const osgWidget::WindowManager*) {
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setColor(0.6f, 0.6f, 0.6f, 1.0f);
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return true;
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}
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bool mouseLeave(double, double, const osgWidget::WindowManager*) {
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setColor(0.3f, 0.3f, 0.3f, 1.0f);
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return true;
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}
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};
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class ColorLabelMenu: public ColorLabel {
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osg::ref_ptr<osgWidget::Window> _window;
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public:
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ColorLabelMenu(const char* label):
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ColorLabel(label) {
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_window = new osgWidget::Box(
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std::string("Menu_") + label,
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osgWidget::Box::VERTICAL,
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true
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);
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_window->addWidget(new ColorLabel("Open Some Stuff"));
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_window->addWidget(new ColorLabel("Do It Now"));
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_window->addWidget(new ColorLabel("Hello, How Are U?"));
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_window->addWidget(new ColorLabel("Hmmm..."));
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_window->addWidget(new ColorLabel("Option 5"));
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_window->resize();
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setColor(0.8f, 0.8f, 0.8f, 0.8f);
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}
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void managed(osgWidget::WindowManager* wm) {
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osgWidget::Label::managed(wm);
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wm->addChild(_window.get());
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_window->hide();
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}
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void positioned() {
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osgWidget::Label::positioned();
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_window->setOrigin(getX(), getHeight());
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_window->resize(getWidth());
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}
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bool mousePush(double, double, const osgWidget::WindowManager*) {
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if(!_window->isVisible()) _window->show();
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else _window->hide();
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return true;
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}
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bool mouseLeave(double, double, const osgWidget::WindowManager*) {
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if(!_window->isVisible()) setColor(0.8f, 0.8f, 0.8f, 0.8f);
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return true;
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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::Window* menu = new osgWidget::Box("menu", osgWidget::Box::HORIZONTAL);
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menu->addWidget(new ColorLabelMenu("Pick me!"));
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menu->addWidget(new ColorLabelMenu("No, wait, pick me!"));
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menu->addWidget(new ColorLabelMenu("Don't pick them..."));
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menu->addWidget(new ColorLabelMenu("Grarar!?!"));
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wm->addChild(menu);
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menu->getBackground()->setColor(1.0f, 1.0f, 1.0f, 0.0f);
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menu->resizePercent(100.0f);
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osg::ref_ptr<osg::Node> model = osgDB::readRefNodeFile("osgcool.osgt");
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model->setNodeMask(MASK_3D);
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return osgWidget::createExample(viewer, wm, model.get());
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}
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