/*--------------------------------------------------------------------------------------

//

//  File:       BitBlitz.h

//

//  Contents:   Type definitions, global constants and variables, and routine declarations

//              used externally to the BitBlitz.c segment.

//

//

//  By Georgiann ("George") Delaney

//  ©Ê1989 - 1990, Apple Computer, Inc.

//

//--------------------------------------------------------------------------------------*/

/*--------------------------------------------------------------------------------------*/

/*  Constants  */

#define  kClpRgn        0               /*  Region ID constants  */

#define  kVisRgn        1

#define  kMskRgn        2

#define  kSrcWindow     0               /*  Window ID constants  */

#define  kMskWindow     1

#define  kDstWindow     2

#define  kBitWindow     3

#define  kCopyMask      0               /*  Trap selection constants  */

#define  kCopyDeepMask  1

#define  kCopyBits      2

/*--------------------------------------------------------------------------------------*/

/*  Type definitions  */

typedef struct {                        /*  Struct which holds color information for    */

    short       menuIndex;              /*  setting the FG, BK, OP, and Hilite colors.  */

    RGBColor    rgb;

}  ColorAttributes;

typedef struct {                    

    short       type;           

    RgnHandle   rgn;

}  RgnAttributes;

typedef struct  {                       /*  Definition of the window attributes record  */

    WindowPtr   window;                 /*  describing the contents/status of each of   */

    short       bufferType;             /*  the 4 CopyMask windows                      */

    short       bufferDepth;

    union  {

        GWorldPtr   gworld;

        CGrafPtr    pixmap;

        GrafPtr     bitmap;

        } buffer;

    short       contentType;

    union  {

        short       saturation;

        RGBColor    RGB;

        PicHandle   pictInfo;

        } content;

}  WindowAttributes;

/*--------------------------------------------------------------------------------------*/

/*  Global Variables  */

RgnAttributes       gRList[3];

WindowAttributes    gWList[4];              /*  Window list containing the 4 CopyMask Windows

                                                attribute records.                              */

short       gCopyMode   = srcCopy;          /*  The current copy mode that will be applied 

                                                in the CopyMask() call.                         */          

short       gTrapSelect = kCopyMask;        /*  This global designates which of the two traps

                                                that the user wishes to test                    */

Boolean     gColorAvail;        /* Global variable designating that color QuickDraw is around   */

Boolean     gGWorldsAvail;      /* Global variable designating that GWorlds are implemented/    */

Boolean     gUseScreenBits = false;

Boolean     gDither        = false;

ColorAttributes gFGColor,

                gBKColor,

                gOPColor,

                gHiliteColor;

RgnHandle   gHoldVisRgn = nil;

RgnHandle   gHoldClpRgn = nil;

/*--------------------------------------------------------------------------------------*/

/*  Externally visible routines  */

Boolean myTrapAvailable         (theNumber,theType);

void    InitTestGlobals         (void);

void    InitColorSettings       (void);

void    InitRgnSettings         (void);

void    UpdateRgnSettings       (void);

void    DisposeRgnSettings      (void);

void    InitTestWindowAttributes(void);

Boolean CreateTestWindows       (void);

void    DisposeTestWindows      (void);

Boolean ResizeTestWindow        (Point *newDimen, short windowCode);

Boolean ChangeWindowAttributes  (short windowCode);

void    SelectFGColor           (short theItem);

void    SelectBKColor           (short theItem);

void    SelectOPColor           (short theItem);

void    SelectHiliteColor       (short theItem);

void    SelectRgn               (short rgnCode, short rgnType);

Boolean SelectTrap              (void);

void    DrawBuffer              (short windowCode);

void    DrawWindow              (short windowCode);

short   CopyMode2ModeMenuItem   (short theMode);

short   ModeMenuItem2CopyMode   (short theItem);

void    NeedSystem7Dlog         (void);

void    AboutBitBlitz           (void);