plugins/crazychat/Utilities.c

/*
	File:		Utilities.c
	
	Description: Miscellaneous Utility routines.

	Copyright: 	© Copyright 2003 Apple Computer, Inc. All rights reserved.
	
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	Change History (most recent first):

*/

#ifndef __UTILITIES__
    #include "Utilities.h"
#endif

const OSType    kApplicationSignature  = FOUR_CHAR_CODE('cvmj');
const ResType   kOpenResourceType = FOUR_CHAR_CODE('open');
const StringPtr kApplicationName = "\pYourAppNameHere";

//////////
//
// GetOneFileWithPreview
// Display the appropriate file-opening dialog box, with an optional QuickTime preview pane. If the user
// selects a file, return information about it using the theFSSpecPtr parameter.
//
// Note that both StandardGetFilePreview and NavGetFile use the function specified by theFilterProc as a
// file filter. This framework always passes NULL in the theFilterProc parameter. If you use this function
// in your own code, keep in mind that on Windows the function specifier must be of type FileFilterUPP and 
// on Macintosh it must be of type NavObjectFilterUPP. (You can use the QTFrame_GetFileFilterUPP to create
// a function specifier of the appropriate type.) Also keep in mind that Navigation Services expects a file 
// filter function to return true if a file is to be displayed, while the Standard File Package expects the
// filter to return false if a file is to be displayed.
//
//////////

OSErr GetOneFileWithPreview (short theNumTypes, TypeListPtr theTypeList, FSSpecPtr theFSSpecPtr, void *theFilterProc)
{
	
#if TARGET_OS_WIN32
	StandardFileReply	myReply;
#endif
#if TARGET_OS_MAC
	NavReplyRecord		myReply;
	NavDialogOptions		myDialogOptions;
	NavTypeListHandle	myOpenList = NULL;
	NavEventUPP		myEventUPP = NewNavEventUPP(HandleNavEvent);
#endif
	OSErr				myErr = noErr;
	
	if (theFSSpecPtr == NULL)
		return(paramErr);

#if TARGET_OS_WIN32
	// prompt the user for a file
	StandardGetFilePreview((FileFilterUPP)theFilterProc, theNumTypes, (ConstSFTypeListPtr)theTypeList, &myReply);
	if (!myReply.sfGood)
		return(userCanceledErr);
	
	// make an FSSpec record
	myErr = FSMakeFSSpec(myReply.sfFile.vRefNum, myReply.sfFile.parID, myReply.sfFile.name, theFSSpecPtr);
#endif

#if TARGET_OS_MAC
	// specify the options for the dialog box
	NavGetDefaultDialogOptions(&myDialogOptions);
	myDialogOptions.dialogOptionFlags -= kNavNoTypePopup;
	myDialogOptions.dialogOptionFlags -= kNavAllowMultipleFiles;
	BlockMoveData(kApplicationName, myDialogOptions.clientName, kApplicationName[0] + 1);
	
	// create a handle to an 'open' resource
	myOpenList = (NavTypeListHandle)CreateOpenHandle(kApplicationSignature, theNumTypes, theTypeList);
	if (myOpenList != NULL)
		HLock((Handle)myOpenList);
	
	// prompt the user for a file
	myErr = NavGetFile(NULL, &myReply, &myDialogOptions, myEventUPP, NULL, (NavObjectFilterUPP)theFilterProc, myOpenList, NULL);
	if ((myErr == noErr) && myReply.validRecord) {
		AEKeyword		myKeyword;
		DescType		myActualType;
		Size			myActualSize = 0;
		
		// get the FSSpec for the selected file
		if (theFSSpecPtr != NULL)
			myErr = AEGetNthPtr(&(myReply.selection), 1, typeFSS, &myKeyword, &myActualType, theFSSpecPtr, sizeof(FSSpec), &myActualSize);

		NavDisposeReply(&myReply);
	}
	
	if (myOpenList != NULL) {
		HUnlock((Handle)myOpenList);
		DisposeHandle((Handle)myOpenList);
	}
	
	DisposeNavEventUPP(myEventUPP);
#endif
 
	return(myErr);
}

//////////
//
// CreateOpenHandle
// Get the 'open' resource or dynamically create a NavTypeListHandle.
//
//////////

Handle CreateOpenHandle (OSType theApplicationSignature, short theNumTypes, TypeListPtr theTypeList)
{
	Handle			myHandle = NULL;
	
	// see if we have an 'open' resource...
	myHandle = Get1Resource('open', 128);
	if ( myHandle != NULL && ResError() == noErr ) {
		DetachResource( myHandle );
		return myHandle;
	} else {
		myHandle = NULL;
	}
	
	// nope, use the passed in types and dynamically create the NavTypeList
	if (theTypeList == NULL)
		return myHandle;
	
	if (theNumTypes > 0) {
		myHandle = NewHandle(sizeof(NavTypeList) + (theNumTypes * sizeof(OSType)));
		if (myHandle != NULL) {
			NavTypeListHandle 	myOpenResHandle	= (NavTypeListHandle)myHandle;
			
			(*myOpenResHandle)->componentSignature = theApplicationSignature;
			(*myOpenResHandle)->osTypeCount = theNumTypes;
			BlockMoveData(theTypeList, (*myOpenResHandle)->osType, theNumTypes * sizeof(OSType));
		}
	}
	
	return myHandle;
}

//////////
//
// HandleNavEvent
// A callback procedure that handles events while a Navigation Service dialog box is displayed.
//
//////////

PASCAL_RTN void HandleNavEvent(NavEventCallbackMessage theCallBackSelector, NavCBRecPtr theCallBackParms, void *theCallBackUD)
{
#pragma unused(theCallBackUD)
	
	if (theCallBackSelector == kNavCBEvent) {
		switch (theCallBackParms->eventData.eventDataParms.event->what) {
			case updateEvt:
#if TARGET_OS_MAC
				// Handle Update Event
#endif
				break;
			case nullEvent:
				// Handle Null Event
				break;
		}
	}
}

//////////
//
// PutFile
// Save a file under the specified name. Return Boolean values indicating whether the user selected a file
// and whether the selected file is replacing an existing file.
//
//////////

OSErr PutFile (ConstStr255Param thePrompt, ConstStr255Param theFileName, FSSpecPtr theFSSpecPtr, Boolean *theIsSelected, Boolean *theIsReplacing)
{
	NavReplyRecord		myReply;
	NavDialogOptions		myDialogOptions;
	NavEventUPP		myEventUPP = NewNavEventUPP(HandleNavEvent);
	OSErr				myErr = noErr;

	if ((theFSSpecPtr == NULL) || (theIsSelected == NULL) || (theIsReplacing == NULL))
		return(paramErr);
	
	// assume we are not replacing an existing file
	*theIsReplacing = false;
	
        *theIsSelected = false;
        
	// specify the options for the dialog box
	NavGetDefaultDialogOptions(&myDialogOptions);
	myDialogOptions.dialogOptionFlags += kNavNoTypePopup;
	myDialogOptions.dialogOptionFlags += kNavDontAutoTranslate;
	BlockMoveData(theFileName, myDialogOptions.savedFileName, theFileName[0] + 1);
	BlockMoveData(thePrompt, myDialogOptions.message, thePrompt[0] + 1);
	
	// prompt the user for a file
	myErr = NavPutFile(NULL, &myReply, &myDialogOptions, myEventUPP, MovieFileType, sigMoviePlayer, NULL);
	if ((myErr == noErr) && myReply.validRecord) 
    {
		AEKeyword		myKeyword;
		DescType		myActualType;
		Size			myActualSize = 0;
		
		// get the FSSpec for the selected file
		if (theFSSpecPtr != NULL)
			myErr = AEGetNthPtr(&(myReply.selection), 1, typeFSS, &myKeyword, &myActualType, theFSSpecPtr, sizeof(FSSpec), &myActualSize);

                *theIsSelected = myReply.validRecord;
                if (myReply.validRecord)
                {
                    *theIsReplacing = myReply.replacing;
                }

		NavDisposeReply(&myReply);
	}
		

	DisposeNavEventUPP(myEventUPP);

	return(myErr);
}

//////////
//
// DrawLobsterPICTtoGWorld
// Draws our lobster image to the specified gworld
//
//////////

void DrawLobsterPICTtoGWorld(CGrafPtr destGWorld, Rect *srcRect)
{
        // put the overlay into the GWorld, move the picture to the bottom right of the movie
    PicHandle	pict = GetPicture(129);
    if (pict)
    {
        CGrafPtr	oldPort;
        GDHandle	oldDevice;
        Rect		frame = (**pict).picFrame;
        
        GetGWorld(&oldPort, &oldDevice);
        SetGWorld(destGWorld, nil);
        // normalize coordinates
        OffsetRect(&frame, -frame.left, -frame.left);
        // grow frame to be as big as source rect
        OffsetRect(&frame, srcRect->right - frame.right, srcRect->bottom - frame.bottom);
        DrawPicture(pict, &frame);
        SetGWorld(oldPort, oldDevice);
        ReleaseResource((Handle)pict);
    }
}