JPEGView/Headers/JPEGViewTypes.h

/*********************************************************/
/* This source code copyright (c) 1991-2001, Aaron Giles */
/* See the Read Me file for licensing information.       */
/* Contact email: mac@aarongiles.com                     */
/*********************************************************/

#ifndef __JPEGVIEWTYPES__
#define __JPEGVIEWTYPES__

#include <Files.h>
#include <ImageCompression.h>
#include <Palettes.h>
#include <QDOffscreen.h>
#include <QuickDraw.h>
#include <Types.h>
#include <Windows.h>
#include "MarchingAnts.h"

typedef unsigned char uchar;
typedef unsigned short ushort;
typedef unsigned long ulong;

typedef struct ImageItem ImageItem, *ImagePtr, **ImageHandle;

//===================================================================================
// NestedProgress: structure for holding data necessary to do nested progress 
// procedures.
//===================================================================================

typedef struct NestedProgress
{
	ICMProgressProcRecord prog;
	short level;
	Fixed begin, end;
	char aborted;
} NestedProgress, *NestedProgressPtr, **NestedProgressHandle;

//===================================================================================
// JVPortParams: structure for holding drawing parameters that describe a port.
//===================================================================================

typedef struct JVPortParams
{
	CGrafPtr port;					// pointer to the port to draw in
	Rect outer;						// bounds of the image, in dest. coordinates
	Boolean dither;					// flag: true to dither when drawing
} JVPortParams;

//===================================================================================
// JVDrawParams: structs for holding the drawing parameters for a particular drawing 
// operation, both onscreen and offscreen.
//===================================================================================

typedef struct JVDrawParams
{
	struct JVDrawParams **next;		// handle to the next in the list
	Rect bounds;					// full-size bounds of image
	CGrafPtr dummy;					// dummy GrafPort for drawing into
	JVPortParams on;				// on-screen drawing parameters
	JVPortParams off;				// off-screen drawing parameters
	JVPortParams extra;				// extra off-screen drawing parameters
	Boolean quantize;				// quantizing flag: true to fill the histogram
	short quality;					// drawing quality to be used
	Handle privateData;				// private data for the plug-in 
	NestedProgress progress;		// nested progress procedure record
	short endprogress;				// scan line where we stop drawing progress
	RgnHandle newupdates;			// handle to new updates in the onscreen port
	PixMapPtr src;					// pointer to the source pixmap for DeviceCopy
	Rect srcrect;					// source bounds for DeviceCopy
	Rect dstrect;					// destination bounds for DeviceCopy
	Rect drawProgressRect;			// rectangle used by drawing progress
	Ptr oldbits;					// pointer to the old StdBits routine for FixBits
	CQDProcs *oldprocs;				// pointer to the old set of CQDProcs for FixBits
} JVDrawParams, *JVDrawParamsPtr, **JVDrawParamsHandle;

typedef Boolean (*idImagePtr)(uchar *theData, long theSize, short refNum, FSSpec *theSpec);
typedef OSErr (*OpenImagePtr)(ImageHandle theImage);
typedef OSErr (*DrawImagePtr)(Handle theHandle, JVDrawParamsHandle theParams);
typedef OSErr (*LoadImagePtr)(short theFile, ImageHandle theImage);
typedef OSErr (*SaveImagePtr)(FSSpec *theSpec, Handle theHandle, GWorldPtr thePreview, Rect *theRect, Handle privates);
typedef OSErr (*FixImagePtr)(ImageHandle theImage, Handle *finalData, Boolean palette);
typedef OSErr (*CloneImagePtr)(ImageHandle origImage, ImageHandle newImage);
typedef OSErr (*CloseImagePtr)(ImageHandle theImage);
typedef pascal void (*StdBitsProcPtr)(PixMap *, Rect *, Rect *, short, RgnHandle);

/*
 * sMonitorItem = linked list item describing a graphics device
 *
 */

typedef struct MonitorItem
{
	struct MonitorItem **next;		// pointer to the next monitor
	RgnHandle gray;					// this monitor's contribution to the GrayRgn
	RgnHandle screen;				// the full screen area of this moni