//////////

//

//  File:       QDrawHandler.h

//

//  Contains:   Code for creating a derived media handler component for QuickDraw pictures.

//

//  Written by: Tim Monroe

//              Based on MyMediaComponent by John Wang (see develop issue 14).

//

//  Copyright:  © 1993 - 1999 by Apple Computer, Inc., all rights reserved.

//

//  Change History (most recent first):

//

//     <2>      01/05/99    rtm     revised coding style

//     <1>      02/25/93    jw      first file; based on MyComponent shell

//

//////////

#pragma once

//////////

//

// header files

//

//////////

#ifndef __MOVIES__

#include <Movies.h>

#endif

#ifndef __COMPONENTS__

#include <Components.h>

#endif

#ifndef __QUICKTIMECOMPONENTS__

#include <QuickTimeComponents.h>

#endif

#ifndef __MEDIAHANDLERS__

#include <MediaHandlers.h>

#endif

#ifndef __QDMEDIACOMMON__

#include "QDMediaCommon.h"

#endif

//////////

//

// constants

//

//////////

// flags to keep track of changes to the current media environment

#define kQDMHAllChanged                 0xffffffff

#define kQDMHNothingChanged             0x00000000

#define kQDMHSetActive                  0x00000001

#define kQDMHSetRate                    0x00000002

#define kQDMHTrackEdited                0x00000004

#define kQDMHSetGWorld                  0x00000008

#define kQDMHSetDimensions              0x00000010

#define kQDMHSetMatrix                  0x00000020

#define kQDMHSampleDescChanged          0x00000040

//////////

//

// data types

//

//////////

#if PRAGMA_STRUCT_ALIGN

    #pragma options align=mac68k

#elif PRAGMA_STRUCT_PACKPUSH

    #pragma pack(push, 2)

#elif PRAGMA_STRUCT_PACK

    #pragma pack(2)

#endif

typedef struct QDMH_Globals {

    // component stuff

    ComponentInstance               fDelegate;              // the base component we are delegating to

    ComponentInstance               fSelf;                  // ourself

    ComponentInstance               fParent;                // our parent, if we are targeted by another media handler

    // general characteristics

    Movie                           fMovie;                 // the movie

    Track                           fTrack;                 // the media's track

    Media                           fMedia;                 // the media

    Fixed                           fCurMediaRate;          // the media's current playback rate

    Fixed                           fNewMediaRate;          // the media's new playback rate

    Rect                            fGraphicsBox;           // the box we want to draw into

    MatrixRecord                    fTrackMatrix;           // the track matrix

    CGrafPtr                        fPort;

    GDHandle                        fDevice;

    long                            fSampleDescIndex;       // the index of the current sample description

    long                            fWhatChanged;           // flags indicating changes in media environment

    Boolean                         fEnabled;               // is the track enabled?

    TimeValue                       fPrevMediaTime;         // previously drawn media time

} QDMH_Globals, *QDMH_GlobalsPtr, **QDMH_GlobalsHdl;

#if PRAGMA_STRUCT_ALIGN

    #pragma options align=reset

#elif PRAGMA_STRUCT_PACKPUSH

    #pragma pack(pop)

#elif PRAGMA_STRUCT_PACK

    #pragma pack()

#endif