glfw/lib/cocoa/cocoa_fullscreen.m

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2010-09-07 15:34:51 +00:00
//========================================================================
// GLFW - An OpenGL framework
// Platform: Cocoa/NSOpenGL
// API Version: 2.7
// WWW: http://www.glfw.org/
//------------------------------------------------------------------------
// Copyright (c) 2009-2010 Camilla Berglund <elmindreda@elmindreda.org>
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented; you must not
// claim that you wrote the original software. If you use this software
// in a product, an acknowledgment in the product documentation would
// be appreciated but is not required.
//
// 2. Altered source versions must be plainly marked as such, and must not
// be misrepresented as being the original software.
//
// 3. This notice may not be removed or altered from any source
// distribution.
//
//========================================================================
#include "internal.h"
//========================================================================
// Check whether the display mode should be included in enumeration
//========================================================================
static BOOL modeIsGood( NSDictionary *mode )
{
// This is a bit controversial, if you've got something other than an
// LCD computer monitor as an output device you might not want these
// checks. You might also want to reject modes which are interlaced,
// or TV out. There is no one-size-fits-all policy that can work here.
// This seems like a decent compromise, but certain applications may
// wish to patch this...
return [[mode objectForKey:(id)kCGDisplayBitsPerPixel] intValue] >= 15 &&
[mode objectForKey:(id)kCGDisplayModeIsSafeForHardware] != nil &&
[mode objectForKey:(id)kCGDisplayModeIsStretched] == nil;
}
//========================================================================
// Convert Core Graphics display mode to GLFW video mode
//========================================================================
static GLFWvidmode vidmodeFromCGDisplayMode( NSDictionary *mode )
{
unsigned int width = [[mode objectForKey:(id)kCGDisplayWidth] unsignedIntValue];
unsigned int height = [[mode objectForKey:(id)kCGDisplayHeight] unsignedIntValue];
unsigned int bps = [[mode objectForKey:(id)kCGDisplayBitsPerSample] unsignedIntValue];
GLFWvidmode result;
result.Width = width;
result.Height = height;
result.RedBits = bps;
result.GreenBits = bps;
result.BlueBits = bps;
return result;
}
//************************************************************************
//**** Platform implementation functions ****
//************************************************************************
//========================================================================
// Get a list of available video modes
//========================================================================
int _glfwPlatformGetVideoModes( GLFWvidmode *list, int maxcount )
{
NSArray *modes = (NSArray *)CGDisplayAvailableModes( CGMainDisplayID() );
unsigned int i, j = 0, n = [modes count];
for( i = 0; i < n && i < (unsigned)maxcount; i++ )
{
NSDictionary *mode = [modes objectAtIndex:i];
if( modeIsGood( mode ) )
{
list[j++] = vidmodeFromCGDisplayMode( mode );
}
}
return j;
}
//========================================================================
// Get the desktop video mode
//========================================================================
void _glfwPlatformGetDesktopMode( GLFWvidmode *mode )
{
*mode = vidmodeFromCGDisplayMode( _glfwLibrary.DesktopMode );
}