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From Sukender and Robert Osfield, introduced GraphicsContext::ScreenSettings & WindowingSystemInterface::enumerateScreenSettings.

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This commit is contained in:
Robert Osfield
2008-12-16 15:08:04 +00:00
parent aad0a2a2ba
commit 4511281f04
5 changed files with 297 additions and 100 deletions
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66
include/osg/GraphicsContext
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@@ -16,6 +16,7 @@
#include <osg/State>
#include <osg/GraphicsThread>
#include <vector>
namespace osg {
@@ -150,23 +151,72 @@ class OSG_EXPORT GraphicsContext : public Object
// X11 hint whether to override the window managers window size/position redirection
bool overrideRedirect;
};
/** Simple resolution structure used by WindowingSystemInterface to get and set screen resolution.
* Note the '0' value stands for 'unset'. */
struct ScreenSettings {
ScreenSettings() :
width(0),
height(0),
colorDepth(0),
refreshRate(0)
{}
ScreenSettings(int width, int height, double refreshRate=0, unsigned int colorDepth=0) :
width(width),
height(height),
colorDepth(colorDepth),
refreshRate(refreshRate)
{}
int width;
int height;
double refreshRate; ///< Screen refresh rate, in Hz.
unsigned int colorDepth; ///< RGB(A) color buffer depth.
};
typedef std::vector<ScreenSettings> ScreenSettingsList;
/** Callback to be implemented to provide access to Windowing API's ability to create Windows/pbuffers.*/
struct WindowingSystemInterface : public osg::Referenced
{
virtual unsigned int getNumScreens(const ScreenIdentifier& screenIdentifier = ScreenIdentifier()) = 0;
virtual void getScreenResolution(const ScreenIdentifier& screenIdentifier, unsigned int& width, unsigned int& height) = 0;
virtual void getScreenSettings(const ScreenIdentifier& screenIdentifier, ScreenSettings & resolution) = 0;
virtual bool setScreenResolution(const ScreenIdentifier& /*screenIdentifier*/, unsigned int /*width*/, unsigned int /*height*/) { return false; }
virtual bool setScreenRefreshRate(const ScreenIdentifier& /*screenIdentifier*/, double /*refreshRate*/) { return false; }
virtual bool setScreenSettings(const ScreenIdentifier& /*screenIdentifier*/, const ScreenSettings & /*resolution*/) { return false; }
virtual void enumerateScreenSettings(const ScreenIdentifier& screenIdentifier, ScreenSettingsList & resolutionList) = 0;
virtual GraphicsContext* createGraphicsContext(Traits* traits) = 0;
virtual ~WindowingSystemInterface() {};
virtual ~WindowingSystemInterface() {}
/** Gets screen resolution without using the ScreenResolution structure.
* \deprecated Provided only for backward compatibility. */
inline void getScreenResolution(const ScreenIdentifier& screenIdentifier, unsigned int& width, unsigned int& height)
{
ScreenSettings settings;
getScreenSettings(screenIdentifier, settings);
width = settings.width;
height = settings.height;
}
/** Sets screen resolution without using the ScreenSettings structure.
* \deprecated Provided only for backward compatibility. */
inline bool setScreenResolution(const ScreenIdentifier& screenIdentifier, unsigned int width, unsigned int height)
{
return setScreenSettings(screenIdentifier, ScreenSettings(width, height));
}
/** \deprecated Provided only for backward compatibility. */
inline bool setScreenRefreshRate(const ScreenIdentifier& screenIdentifier, double refreshRate)
{
ScreenSettings settings;
getScreenSettings(screenIdentifier, settings);
settings.refreshRate = refreshRate;
return setScreenSettings(screenIdentifier, settings);
}
};