GliderPRO/Sources/Environ.c

//============================================================================
//----------------------------------------------------------------------------
//									Environ.c
//----------------------------------------------------------------------------
//============================================================================


#include <LowMem.h>
#include <Gestalt.h>
#include <NumberFormatting.h>
#include <Sound.h>
#include "Externs.h"
#include "Environ.h"
#include <Palettes.h>


#define	kSwitchDepthAlert		130
#define kSetMemoryAlert			180
#define kLowMemoryAlert			181
#define kWNETrap				0x60
#define	kSetDepthTrap			0xA2
#define kUnimpTrap				0x9F
#define kGestaltTrap			0xAD

#define	kDisplay9Inch			1
#define	kDisplay12Inch			2
#define	kDisplay13Inch			3


typedef struct
{
	short	flags;
	long	mem1;
	long	mem2;
} sizeType;


//short GetThisVolumeRefNum (void);
//long GetThisCurrentDirectoryID (void);
//Boolean TrapExists (short);
//Boolean DoWeHaveGestalt (void);
//Boolean DoWeHaveWNE (void);
//Boolean DoWeHaveColor (void);
//Boolean DoWeHaveSystem602 (void);
//Boolean DoWeHaveSystem605 (void);
//Boolean DoWeHaveSystem7 (void);
//Boolean DoWeHaveSoundManager3 (void);
Boolean DoWeHaveQuickTime (void);
Boolean DoWeHaveDragManager (void);
Boolean CanWeDisplay8Bit (GDHandle);
//Boolean CanWeDisplay4Bit (GDHandle);
//Boolean CanWeDisplay1Bit (GDHandle);
short HowManyUsableScreens (Boolean, Boolean, Boolean);
void GetDeviceRect (Rect *);
Boolean AreWeColorOrGrayscale (void);
void SwitchDepthOrAbort (void);


macEnviron	thisMac;

extern	GDHandle	thisGDevice;
extern	short		isDepthPref;
extern	Boolean		dontLoadMusic, dontLoadSounds;


//==============================================================  Functions
//--------------------------------------------------------------  GetThisVolumeRefNum
// Get a hard reference number for the current drive volume this app is on.
/*
short GetThisVolumeRefNum (void)
{
	OSErr		theErr;
	short		vRef;
	
	theErr = GetVol(nil, &vRef);
	return (vRef);
}
*/
//--------------------------------------------------------------  GetThisCurrentDirectoryID
// Get a hard ID number for the current directory volume this app is in.
/*
long GetThisCurrentDirectoryID (void)
{
	long		dirID;
	
	dirID = LMGetCurDirStore();
	return (dirID);
}
*/
//--------------------------------------------------------------  TrapExists
// Returns whether or not a ToolBox trap exists for the users ROMs/System.
/*
Boolean TrapExists (short trapNumber)
{
	return ((NGetTrapAddress(trapNumber, ToolTrap) !=
		NGetTrapAddress(kUnimpTrap, ToolTrap)));
}
*/
//--------------------------------------------------------------  DoWeHaveGestalt

// Specifically tests for the availablity of the Gestalt() trap.
/*
Boolean DoWeHaveGestalt (void)
{
	return (TrapExists(kGestaltTrap));
}
*/
//--------------------------------------------------------------  DoWeHaveWNE  

// Specifically tests for the availablity of the WaitNextEvent() trap.
/*
Boolean DoWeHaveWNE (void)
{
	return (TrapExists(kWNETrap));
}
*/
//--------------------------------------------------------------  DoWeHaveColor  
// Determines if ROMs support Color QuickDraw (monitor not neccessarily color).
/*
Boolean DoWeHaveColor (void)
{
	SysEnvRec		thisWorld;
	
	SysEnvirons(2, &thisWorld);
	return (thisWorld.hasColorQD);
}
*/
//--------------------------------------------------------------  DoWeHaveSystem602  
// Determines if the System version is at least 6.0.2 or more recent.
/*
Boolean DoWeHaveSystem602 (void)
{
	SysEnvRec		thisWorld;
	Boolean			haveIt;
	
	SysEnvirons(2, &thisWorld);
	if (thisWorld.systemVersion >= 0x0602)
		haveIt = true;
	else
		haveIt = false;
	return (haveIt);
}
*/
//--------------------------------------------------------------  DoWeHaveSystem605  
// Determines if the System version is at least 6.0.5 or more recent.
/*
Boolean DoWeHaveSystem605 (void)
{
	SysEnvRec		thisWorld;
	Boolean			haveIt;
	
	SysEnvirons(2, &thisWorld);
	if (thisWorld.systemVersion >= 0x0605)
		haveIt = true;
	else
		haveIt = false;
	return (haveIt);
}
/
//--------------------------