fe6238d126
implementations being registered at the same time. One usage case for this functionality to support usage of Wayland and X11 in the same version of the osgViewer. As part of the new functionality there is now a osg::GraphicsContext::Traits::windowingSystemPreferrence string that default to empty, but if defined will ensure that a specific WindowingSystemInterface is utilized when you do a generic call like osg::createGraphicsContext(). Also implemented is standard proxy object for registering the new contexts and removing them automatically, and declaration of standard graphicswindow_name() C entry point to help with static build linking.
116 lines
3.6 KiB
Objective-C
116 lines
3.6 KiB
Objective-C
/*
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* IOSUtils.h
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* OpenSceneGraph
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*
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* Created by Thomas Hogarth on 25.11.09.
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*
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* By default we create a full res buffer across all devices and if now viewContentScaleFator is given We use the screens ScaleFactor.
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* This means that for backward compatibility you need to set the windowData _viewContentScaleFactor to 1.0f and set the screen res to the
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* res that of the older gen device.
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* http://developer.apple.com/library/ios/documentation/IOS/Conceptual/IOSOSProgrammingGuide/SupportingResolutionIndependence/SupportingResolutionIndependence.html#//apple_ref/doc/uid/TP40007072-CH10-SW11
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*
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*/
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#ifdef __APPLE__
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#ifndef IOS_UTILS_HEADER_
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#define IOS_UTILS_HEADER_
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#ifdef __OBJC__
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@class UIScreen;
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#else
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class UIScreen;
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#endif
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#include <osg/DeleteHandler>
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#include <osg/GraphicsContext>
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#include <osgViewer/GraphicsWindow>
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namespace osgIOS {
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struct IOSWindowingSystemInterface : public osg::GraphicsContext::WindowingSystemInterface
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{
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public:
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IOSWindowingSystemInterface();
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/** dtor */
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~IOSWindowingSystemInterface();
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/** @return count of attached screens */
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virtual unsigned int getNumScreens(const osg::GraphicsContext::ScreenIdentifier& si) ;
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virtual void getScreenSettings(const osg::GraphicsContext::ScreenIdentifier& si, osg::GraphicsContext::ScreenSettings & resolution);
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virtual void enumerateScreenSettings(const osg::GraphicsContext::ScreenIdentifier& screenIdentifier, osg::GraphicsContext::ScreenSettingsList & resolutionList);
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virtual bool setScreenSettings (const osg::GraphicsContext::ScreenIdentifier & si, const osg::GraphicsContext::ScreenSettings & settings);
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/** returns screen-ndx containing rect x,y,w,h, NOT_TESTED@tom */
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unsigned int getScreenContaining(int x, int y, int w, int h);
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//IOS specific
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//
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//return the UIScreen object asscoiated with the passed ScreenIdentifier
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//returns nil if si isn't found
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UIScreen* getUIScreen(const osg::GraphicsContext::ScreenIdentifier& si);
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//
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//Get the contents scale factor of the screen, this is the scale factor required
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//to convert points to pixels on this screen
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bool getScreenContentScaleFactor(const osg::GraphicsContext::ScreenIdentifier& si, float& scaleFactor);
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//
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//Get the screens size in points, docs state a point is roughly 1/160th of an inch
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bool getScreenSizeInPoints(const osg::GraphicsContext::ScreenIdentifier& si, osg::Vec2& pointSize);
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protected:
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/** implementation of setScreenResolution */
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//IPad can have extenal screens which we can request a res for
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//the main screen screenNum 0 can not currently have its res changed
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//as it only has one mode (might change though and this should still handle it)
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bool setScreenResolutionImpl(const osg::GraphicsContext::ScreenIdentifier& screenIdentifier, unsigned int width, unsigned int height);
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/** implementation of setScreenRefreshRate, currently can't set refresh rate of IOS*/
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bool setScreenRefreshRateImpl(const osg::GraphicsContext::ScreenIdentifier& screenIdentifier, double refreshRate);
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private:
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};
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#if 0
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template <class WSI>
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struct RegisterWindowingSystemInterfaceProxy
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{
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RegisterWindowingSystemInterfaceProxy()
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{
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osg::GraphicsContext::setWindowingSystemInterface(new WSI);
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}
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~RegisterWindowingSystemInterfaceProxy()
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{
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if (osg::Referenced::getDeleteHandler())
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{
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osg::Referenced::getDeleteHandler()->setNumFramesToRetainObjects(0);
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osg::Referenced::getDeleteHandler()->flushAll();
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}
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osg::GraphicsContext::setWindowingSystemInterface(0);
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}
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};
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#endif
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}
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#endif
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#endif // __APPLE__
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