// Graphics Importer and Exporter Samples

// This example creates a URL data reference and opens

// the image from this created reference

// Originally written by Sam Bushell for QuickTime "Live" '99

// WWDC 2000 Introduction to QuickTime

#include "MacShell.h"

void ImageFromURL( void )

{

    OSErr err = noErr;

    DialogPtr dialog;

    short itemHit;

    short itemKind;

    Handle itemHandle;

    Rect itemRect;

    GraphicsImportComponent importer = 0;

    Rect naturalBounds, windowBounds;

    WindowPtr window = NULL;    

    Str255 str;

    Handle urlDataRef = NULL;

    // show a dialog and prompt for the URL

    dialog = GetNewDialog( 1006, NULL, (WindowPtr)-1 );

    SetDialogDefaultItem( dialog, kStdOkItemIndex );

    SetDialogCancelItem( dialog, kStdCancelItemIndex );

    SelectDialogItemText( dialog, 3, 0, 1000 );

    ModalDialog( NULL, &itemHit );

    GetDialogItem( dialog, 3, &itemKind, &itemHandle, &itemRect );

    GetDialogItemText( itemHandle, str );

    DisposeDialog( dialog );

    if( kStdCancelItemIndex == itemHit ) return;

    // the default URL is

    // "http://www.apple.com/quicktime/developers/icefloe/images/writinguin.gif"

    // URL data references must be nul-terminated

    PtrToHand( &str[1], &urlDataRef, 1 + str[0] );

    (*urlDataRef)[ str[0] ] = 0;

    // locate and open a graphics importer component for the data reference

    err = GetGraphicsImporterForDataRef( urlDataRef, URLDataHandlerSubType, &importer );

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

    err = GraphicsImportGetNaturalBounds( importer, &naturalBounds );

    windowBounds = naturalBounds;

    OffsetRect( &windowBounds, 10, 45 );

    window = NewCWindow( NULL, &windowBounds, "\pImage From URL", true, documentProc, (WindowPtr)-1, true, 0);

    // set the graphics port for drawing

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

    // draw the image

    err = GraphicsImportDraw( importer );

    CloseComponent( importer );

    DisposeHandle( urlDataRef );

}