FGFS-4.1/OpenSceneGraph
4
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

From Jean-Sebastein Guay, I recently had to reimplement screen capture functionality into our framework (which was broken since the switch from OSG 1.2 to 2.2 over a year and a half ago). I used the ScreenCaptureHandler which I had contributed right before OSG 2.6 shipped, bit I had to trigger the screen capture programatically instead of by a key press in some cases, so I added a convenience method to do that.

Browse Source 
It's a minimal change, it just calls an already existing protected method. It was trivial to subclass the handler to do it in our code, but pushing the change into OSG makes sense as it's generally useful to have it in the handler itself.

I also noticed that the handle() method was overridden from osgGA::GUIEventHandler but wasn't marked virtual. It wasn't intended that subclasses not be able to override it in turn, so I've added the keyword.""
This commit is contained in:
Robert Osfield 2008-12-19 17:15:10 +00:00
parent 767096631a
commit 502eced994
2 changed files with 10 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
include/osgViewer/ViewerEventHandlers
View File

@ -347,7 +347,10 @@ class OSGVIEWER_EXPORT ScreenCaptureHandler : public osgGA::GUIEventHandler
// aa will point to an osgViewer::View, so we will take a screenshot
// of that view's graphics contexts.
bool handle(const osgGA::GUIEventAdapter& ea, osgGA::GUIActionAdapter& aa);
virtual bool handle(const osgGA::GUIEventAdapter& ea, osgGA::GUIActionAdapter& aa);
/** Capture the given viewer's views on the next frame. */
virtual void captureNextFrame(osgViewer::ViewerBase& viewer);
/** Get the keyboard and mouse usage of this manipulator.*/
virtual void getUsage(osg::ApplicationUsage& usage) const;

6
src/osgViewer/ScreenCaptureHandler.cpp
View File

@ -722,6 +722,12 @@ bool ScreenCaptureHandler::handle(const osgGA::GUIEventAdapter& ea, osgGA::GUIAc
return false;
}
/** Capture the given viewer's views on the next frame. */
void ScreenCaptureHandler::captureNextFrame(osgViewer::ViewerBase& viewer)
{
addCallbackToViewer(viewer);
}
/** Get the keyboard and mouse usage of this manipulator.*/
void ScreenCaptureHandler::getUsage(osg::ApplicationUsage& usage) const
{