GHOST_DisplayManagerCocoa.mm

Go to the documentation of this file.

/* SPDX-FileCopyrightText: 2001-2002 NaN Holding BV. All rights reserved.
 * SPDX-FileCopyrightText: 2009 Damien Plisson
 *
 * SPDX-License-Identifier: GPL-2.0-or-later */
 
#include <Cocoa/Cocoa.h>
 
#include "GHOST_Debug.hh"
#include "GHOST_DisplayManagerCocoa.hh"
 
/* We do not support multiple monitors at the moment. */
 
GHOST_TSuccess GHOST_DisplayManagerCocoa::getNumDisplays(uint8_t &numDisplays) const
{
  @autoreleasepool {
    numDisplays = (uint8_t)[[NSScreen screens] count];
  }
 
  return GHOST_kSuccess;
}
 
GHOST_TSuccess GHOST_DisplayManagerCocoa::getNumDisplaySettings(uint8_t /*display*/,
                                                                int32_t &numSettings) const
{
  numSettings = (int32_t)3; /* Width, Height, BitsPerPixel. */
 
  return GHOST_kSuccess;
}
 
GHOST_TSuccess GHOST_DisplayManagerCocoa::getDisplaySetting(uint8_t display,
                                                            int32_t /*index*/,
                                                            GHOST_DisplaySetting &setting) const
{
  @autoreleasepool {
    NSScreen *askedDisplay;
 
    if (display == kMainDisplay) {
      /* Screen #0 may not be the main one. */
      askedDisplay = [NSScreen mainScreen];
    }
    else {
      askedDisplay = [[NSScreen screens] objectAtIndex:display];
    }
 
    if (askedDisplay == nil) {
      return GHOST_kFailure;
    }
 
    const 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 */
  }
 
  return GHOST_kSuccess;
}
 
GHOST_TSuccess GHOST_DisplayManagerCocoa::getCurrentDisplaySetting(
    uint8_t display, GHOST_DisplaySetting &setting) const
{
  GHOST_ASSERT(
      (display == kMainDisplay),
      "GHOST_DisplayManagerCocoa::getCurrentDisplaySetting(): only main display is supported");
 
  @autoreleasepool {
    NSScreen *askedDisplay;
 
    if (display == kMainDisplay) {
      /* Screen #0 may not be the main one. */
      askedDisplay = [NSScreen mainScreen];
    }
    else {
      askedDisplay = [[NSScreen screens] objectAtIndex:display];
    }
 
    if (askedDisplay == nil) {
      return GHOST_kFailure;
    }
 
    const 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 */
  }
  return GHOST_kSuccess;
}
 
GHOST_TSuccess GHOST_DisplayManagerCocoa::setCurrentDisplaySetting(
    uint8_t 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. */
 
#if 0
  CFDictionaryRef displayModeValues = ::CGDisplayBestModeForParametersAndRefreshRate(
      m_displayIDs[display],
      size_t(setting.bpp),
      size_t(setting.xPixels),
      size_t(setting.yPixels),
      CGRefreshRate(setting.frequency),
      nullptr);
#endif
 
#ifdef GHOST_DEBUG
#  if 0
  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
#endif /* GHOST_DEBUG */
 
  // CGDisplayErr err = ::CGDisplaySwitchToMode(m_displayIDs[display], displayModeValues);
 
  return /* err == CGDisplayNoErr ? */ GHOST_kSuccess /* : GHOST_kFailure */;
}