GHOST_DisplayManagerCocoa.mm

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/*
 * ***** BEGIN GPL LICENSE BLOCK *****
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
 * All rights reserved.
 *
 * The Original Code is: all of this file.
 *
 * Contributor(s):  Maarten Gribnau 09/2001
                    Damien Plisson  10/2009
 *
 * ***** END GPL LICENSE BLOCK *****
 */

#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*/;
}