GHOST_DisplayManagerCocoa.mm

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#include <Cocoa/Cocoa.h>

#include "GHOST_DisplayManagerCocoa.h"
#include "GHOST_Debug.h"

// We do not support multiple monitors at the moment


GHOST_DisplayManagerCocoa::GHOST_DisplayManagerCocoa(void)
{
}


GHOST_TSuccess GHOST_DisplayManagerCocoa::getNumDisplays(GHOST_TUns8& numDisplays) const
{
        NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
        
        numDisplays = (GHOST_TUns8) [[NSScreen screens] count];
        
        [pool drain];
        return GHOST_kSuccess;
}


GHOST_TSuccess GHOST_DisplayManagerCocoa::getNumDisplaySettings(GHOST_TUns8 display, GHOST_TInt32& numSettings) const
{
        GHOST_ASSERT((display==kMainDisplay), "GHOST_DisplayManagerCocoa::getNumDisplaySettings(): only main display is supported");
        
        numSettings = (GHOST_TInt32)3; //Width, Height, BitsPerPixel
        
        return GHOST_kSuccess;
}


GHOST_TSuccess GHOST_DisplayManagerCocoa::getDisplaySetting(GHOST_TUns8 display, GHOST_TInt32 index, GHOST_DisplaySetting& setting) const
{
        //Note that only current display setting is available
        NSScreen *askedDisplay;
        
        GHOST_ASSERT((display==kMainDisplay), "GHOST_DisplayManagerCocoa::getDisplaySetting(): only main display is supported");
        
        NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
        
        if (display == kMainDisplay) //Screen #0 may not be the main one
                askedDisplay = [NSScreen mainScreen];
        else
                askedDisplay = [[NSScreen screens] objectAtIndex:display];
        
        if(askedDisplay == nil) {
                [pool drain];
                return GHOST_kFailure;
        }
        
        NSRect frame = [askedDisplay visibleFrame];
        setting.xPixels = frame.size.width;
        setting.yPixels = frame.size.height;
        
        setting.bpp = NSBitsPerPixelFromDepth([askedDisplay depth]);
        
        setting.frequency = 0; //No more CRT display...
                                
#ifdef GHOST_DEBUG
        printf("display mode: width=%d, height=%d, bpp=%d, frequency=%d\n", setting.xPixels, setting.yPixels, setting.bpp, setting.frequency);
#endif // GHOST_DEBUG

        [pool drain];
        return GHOST_kSuccess;
}


GHOST_TSuccess GHOST_DisplayManagerCocoa::getCurrentDisplaySetting(GHOST_TUns8 display, GHOST_DisplaySetting& setting) const
{
        NSScreen *askedDisplay;
        
        GHOST_ASSERT((display==kMainDisplay), "GHOST_DisplayManagerCocoa::getCurrentDisplaySetting(): only main display is supported");
    
        NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];     

        if (display == kMainDisplay) //Screen #0 may not be the main one
                askedDisplay = [NSScreen mainScreen];
        else
                askedDisplay = [[NSScreen screens] objectAtIndex:display];
        
        if(askedDisplay == nil) {
                [pool drain];
                return GHOST_kFailure;
        }
        
        NSRect frame = [askedDisplay visibleFrame];
        setting.xPixels = frame.size.width;
        setting.yPixels = frame.size.height;
        
        setting.bpp = NSBitsPerPixelFromDepth([askedDisplay depth]);
        
        setting.frequency = 0; //No more CRT display...

#ifdef GHOST_DEBUG
        printf("current display mode: width=%d, height=%d, bpp=%d, frequency=%d\n", setting.xPixels, setting.yPixels, setting.bpp, setting.frequency);
#endif // GHOST_DEBUG

        [pool drain];
        return GHOST_kSuccess;
}


GHOST_TSuccess GHOST_DisplayManagerCocoa::setCurrentDisplaySetting(GHOST_TUns8 display, const GHOST_DisplaySetting& setting)
{
        GHOST_ASSERT((display==kMainDisplay), "GHOST_DisplayManagerCocoa::setCurrentDisplaySetting(): only main display is supported");

#ifdef GHOST_DEBUG
        printf("GHOST_DisplayManagerCocoa::setCurrentDisplaySetting(): requested settings:\n");
        printf("  setting.xPixels=%d\n", setting.xPixels);
        printf("  setting.yPixels=%d\n", setting.yPixels);
        printf("  setting.bpp=%d\n", setting.bpp);
        printf("  setting.frequency=%d\n", setting.frequency);
#endif // GHOST_DEBUG

        //Display configuration is no more available in 10.6
        
/*      CFDictionaryRef displayModeValues = ::CGDisplayBestModeForParametersAndRefreshRate(
                m_displayIDs[display],
                (size_t)setting.bpp,
                (size_t)setting.xPixels,
                (size_t)setting.yPixels,
                (CGRefreshRate)setting.frequency,
                NULL);*/

#ifdef GHOST_DEBUG
/*      printf("GHOST_DisplayManagerCocoa::setCurrentDisplaySetting(): switching to:\n");
        printf("  setting.xPixels=%d\n", getValue(displayModeValues, kCGDisplayWidth));
        printf("  setting.yPixels=%d\n", getValue(displayModeValues, kCGDisplayHeight));
        printf("  setting.bpp=%d\n", getValue(displayModeValues, kCGDisplayBitsPerPixel));
        printf("  setting.frequency=%d\n", getValue(displayModeValues, kCGDisplayRefreshRate)); */
#endif // GHOST_DEBUG

        //CGDisplayErr err = ::CGDisplaySwitchToMode(m_displayIDs[display], displayModeValues);
        
        return /*err == CGDisplayNoErr ?*/ GHOST_kSuccess /*: GHOST_kFailure*/;
}