/*

    File:       GetingMoreInfo.c

    Description: This example demonstrates how to display multiple images.

                 Sample Test Image : Sample 5-iMac in Australia.psd

    Author:     QuickTime Engineering, DTS

    Copyright:  © Copyright 1999 - 2002 Apple Computer, Inc. All rights reserved.

    Disclaimer: IMPORTANT:  This Apple software is supplied to you by Apple Computer, Inc.

                ("Apple") in consideration of your agreement to the following terms, and your

                use, installation, modification or redistribution of this Apple software

                constitutes acceptance of these terms.  If you do not agree with these terms,

                please do not use, install, modify or redistribute this Apple software.

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                to these terms, Apple grants you a personal, non-exclusive license, under AppleÕs

                copyrights in this original Apple software (the "Apple Software"), to use,

                reproduce, modify and redistribute the Apple Software, with or without

                modifications, in source and/or binary forms; provided that if you redistribute

                the Apple Software in its entirety and without modifications, you must retain

                this notice and the following text and disclaimers in all such redistributions of

                the Apple Software.  Neither the name, trademarks, service marks or logos of

                Apple Computer, Inc. may be used to endorse or promote products derived from the

                Apple Software without specific prior written permission from Apple.  Except as

                expressly stated in this notice, no other rights or licenses, express or implied,

                are granted by Apple herein, including but not limited to any patent rights that

                may be infringed by your derivative works or by other works in which the Apple

                Software may be incorporated.

                The Apple Software is provided by Apple on an "AS IS" basis.  APPLE MAKES NO

                WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED

                WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR

                PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND OPERATION ALONE OR IN

                COMBINATION WITH YOUR PRODUCTS.

                IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR

                CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE

                GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

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                ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

    Change History (most recent first): <2> 4/22/02 released as dts sample code

                                        <1> 4/1/99 initial release

*/

#include "MacShell.h"

void MultipleImage( void )

{

    OSErr  err = noErr;

    Handle hOpenTypeList = NewHandle(0);

    long   numTypes = 0;

    FSSpec theFSSpec;

    GraphicsImportComponent importer = 0;

    Rect naturalBounds, windowBounds;

    unsigned long imageCount, imageIndex;

    ImageDescriptionHandle desc = NULL;

    MatrixRecord matrix;

    BuildGraphicsImporterValidFileTypes( hOpenTypeList, &numTypes );

    HLock( hOpenTypeList );

    err = GetOneFileWithPreview(numTypes, (OSTypePtr)*hOpenTypeList, &theFSSpec, NULL);

    DisposeHandle( hOpenTypeList );

    if ( err ) return;

    // locate and open a graphics importer component

    err = GetGraphicsImporterForFile( &theFSSpec, &importer );

    // get the native size of the image associated with the importer

    err = GraphicsImportGetNaturalBounds( importer, &naturalBounds );

    windowBounds = naturalBounds;

    OffsetRect( &naturalBounds, 10, 45 );

    window = NewCWindow( NULL, &naturalBounds, "\pMultiple Images", true, documentProc, (WindowPtr)-1, true, 0);

    // set the graphics port for drawing

    err = GraphicsImportSetGWorld( importer, GetWindowPort(window), NULL );

    // ask the graphics importer how many images there are in this file

    err = GraphicsImportGetImageCount( importer, &imageCount );

    for( imageIndex = 1; imageIndex <= imageCount; imageIndex++ ) { 

        // set the index value for the image we want to draw

        err = GraphicsImportSetImageIndex( importer, imageIndex );

        // each image in the file can have different dimensions, depth, etc.

        // if the image has an alpha, use StraightAlpha graphics mode to draw

        err = GraphicsImportGetImageDescription( importer, &desc );

        if( (*desc)->depth == 32 )

            err = GraphicsImportSetGraphicsMode( importer, graphicsModeStraightAlpha, NULL );

        else

            err = GraphicsImportSetGraphicsMode( importer, ditherCopy, NULL );

        DisposeHandle( (Handle)desc );

        // set up the matrix

        SetIdentityMatrix( &matrix );

        GraphicsImportGetDefaultMatrix( importer, &matrix );

        err = GraphicsImportSetMatrix( importer, &matrix );

        SetPortWindowPort( window );

        EraseRect( &windowBounds );

        // draw the image

        err = GraphicsImportDraw( importer );

        pause();

    }

    // draw the images again but this type don't erase

    for( imageIndex = 2; imageIndex <= imageCount; imageIndex++ ) {

        err = GraphicsImportSetImageIndex( importer, imageIndex );

        err = GraphicsImportGetImageDescription( importer, &desc );

        if( (*desc)->depth == 32 )

            err = GraphicsImportSetGraphicsMode( importer, graphicsModeStraightAlpha, NULL );

        else

            err = GraphicsImportSetGraphicsMode( importer, ditherCopy, NULL );

        DisposeHandle( (Handle)desc );

        SetIdentityMatrix( &matrix );

        GraphicsImportGetDefaultMatrix( importer, &matrix );

        err = GraphicsImportSetMatrix( importer, &matrix );

        err = GraphicsImportDraw( importer );

        pause();

    }

    CloseComponent( importer );

}