uuUndo/DSUtilsASG.c

#include <Folders.h>
#include <ImageCompression.h>
#include <AppleEvents.h>
#include "DSDialogs.h"
#include "DSUserProcs.h"
#include "DSUtilsASG.h"

PrefsHandle gPrefs = nil;

Prefs gDefaultPrefs = {
	kVersion,
	false,
	false,
	{ 0, 0 },
	{ 0, 0 }
};

Handle gMapResource = nil;

extern void DoMenu ( long retVal );

#define kPrefsFileName "\puuUndo Preferences"

static Fixed gProgressPercent = 0;

//=====================================================================================
// pascal OSErr GenericProgress(short theMessage, Fixed thePercent, long refCon)
//=====================================================================================
// Generic progress procedure, which displays a dialog with a progress bar and a cancel
// button.  This function can be called as often as desired; the display is never
// updated more than 6 times/second.
//=====================================================================================
 
pascal OSErr GenericProgress(short theMessage, Fixed thePercent, long refCon) 
{
	static UserItemUPP gUpdateBar = nil;
	static DialogPtr gTheDialog = nil;
	static long gLastTime;
	OSErr theErr = noErr;
	GrafPtr oldPort;
	Point thePoint;
	long ticks;

	GetPort(&oldPort);
	switch (theMessage) {
		case codecProgressOpen:
			if (gTheDialog = GetNewDialog(rProgressDialog, nil, (WindowPtr)-1)) {
				SetPort(gTheDialog);
					
				// set up the user item handler, either for indefinite progress
				// (thePercent == kIndefProgress) or for standard progress
				if (!gUpdateBar) gUpdateBar = NewUserItemProc((ProcPtr)UpdateBar);
				SetItemHandle(gTheDialog, progressUser, (Handle)gUpdateBar);
				SetWindowPosition(gTheDialog, (*gPrefs)->progressLoc);
				UserDialogActivate(FrontWindow(), false);
				ShowWindow(gTheDialog);
				DrawDialog(gTheDialog);
			}
			
			// reset the last time so that we draw right away, and update the initial
			// percentage
			gLastTime = 0;
			theErr = GenericProgress(codecProgressForceUpdatePercent, 0, refCon);
			break;

		case codecProgressForceUpdatePercent:
			gLastTime = 0;
		case codecProgressUpdatePercent:
			if (gTheDialog) {
			
				// update our user item no more than 3x a second; do this by setting the
				// gProgressPercent global, and forcing an update of the bar userItem
				if ((TickCount() - gLastTime) < 10L) break;
				gLastTime = TickCount();
				gProgressPercent = thePercent;
				UpdateDialogItem(gTheDialog, progressUser);
			}
			break;

		case codecProgressClose:

			// display the final percentage and delay for an instant
			GenericProgress(codecProgressForceUpdatePercent, 0x10000, refCon);
			Delay(1, &ticks);
			GetWindowPosition(gTheDialog, &thePoint);
			(*gPrefs)->progressLoc = thePoint;
			if (gTheDialog) DisposeDialog(gTheDialog);
			gTheDialog = nil;
			UserDialogActivate(FrontWindow(), true);
			break;
	}

	// restore the original port and check for aborts
	SetPort(oldPort);
	if (theErr == noErr && theMessage != codecProgressForceUpdatePercent) theErr = (CheckAbort()) ? codecAbortErr : noErr;

	// if there was an abort signalled, and the dialog is visible, hide it immediately
	// to give better user feedback
	if (theErr == codecAbortErr && gTheDialog && ((WindowPeek)gTheDialog)->visible) HideWindow(gTheDialog);

	return theErr;
}

/*
 * CheckAbort()
 *
 *     Purpose: Scans the event queue for an aborting keypress
 *      Inputs: none
 *     Returns: true if we should abort
 *
 */

Boolean CheckAbort()
{
	static long gLastTime = 0;
	Boolean aborted = false, callWNE = false;
	EventRecord theEvent;
	GrafPtr oldPort;

	// if we're not in the background, ensure that we get at least 2 ticks of continuous
	// operation before giving up a full amount of time to others
	if ((TickCount() - gLastTime) >= 5) callWNE = true;
	GetPort(&oldPort);
	SetPort(FrontWindow());

	// get the next event; if sleepTime is zero, check event availability first
	if (callWNE || EventAvail(everyEvent, &theEvent)) {
	
		// handle any pending events normally
		while (WaitNextEvent(everyEvent, &theEvent, 0, nil)) {
		
			// dispatch the event as appropriate
			switch (theEvent.what) {
				case mouseDown:
					aborted = HandleAbortMouseDown(&theEvent);
					break;
					
				case keyDown:
				case autoKey:
					aborted = HandleAbortKeyDown(&theEvent);
					break;
					
				case updateEvt:
					SetPort((WindowPtr)theEvent.message);
					BeginUpdate((WindowPtr)theEvent.message);
					if (((WindowPeek)theEvent.message)->windowKind == dialogKind)
						UpdtDialog((DialogPtr)theEvent.message, ((DialogPtr)theEvent.message)->visRgn);
					EndUpdate((WindowPtr)theEvent.message);
					break;
				
				case kHighLevelEvent:
					gProcessing = true;
					AEProcessAppleEvent(&theEvent);
					gProcessing = false;
					break;
			}
		}
		if (callWNE) gLastTime = TickCount();
	}
	SetPort(oldPort);
	return aborted;
}

Boolean GiveTime()
{
	EventRecord theEvent;
	GrafPtr oldPort;

	GetPort(&oldPort);
	SetPort(FrontWindow());

	// handle any pending events normally
	while (WaitNextEvent(everyEvent & ~(mDownMask + keyDownMask + autoKeyMask), &theEvent, 0, nil)) {
	
		// dispatch the event as appropriate
		switch (theEvent.what) {
			case updateEvt:
				SetPort((WindowPtr)theEvent.message);
				BeginUpdate((WindowPtr)theEvent.message);
				if (((WindowPeek)theEvent.message)->windowKind == dialogKind)
					UpdtDialog((DialogPtr)theEvent.message, ((DialogPtr)theEvent.message)->visRgn);
				EndUpdate((WindowPtr)theEvent.message);
				break;
			
			case kHighLevelEvent:
				gProcessing = true;
				AEProcessAppleEvent(&theEvent);
				gProcessing = false;
				break;
		}
	}
	SetPort(oldPort);
	return true;
}

Boolean HandleAbortMouseDown(EventRecord *theEvent)
{
	Boolean aborted = false;
	
	// handle dialog events properly; if button 3 was hit on the progress dialog,
	// we abort the drawing
	if (IsDialogEvent(theEvent)) {
		DialogPtr theDialog;
		short itemHit;
		SetCursor(&qd.arrow);
		if (DialogSelect(theEvent, &theDialog, &itemHit)) {
			if (GetWRefCon(theDialog) == kProgressDialogID && itemHit == progressCancel) return true;
			return false;
		}
	}

	// otherwise, do it the hard way....
	else {
		WindowPtr theWindow;
		short thePart = FindWindow(theEvent->where, &theWindow);

		// track dragging and menus as normal; check specially for clicks in
		// the slide show controls floating window, and beep about everything else
		switch (thePart) {
			case inDrag:
				if (theWindow == FrontWindow()) DragWindow(theWindow, theEvent->where, &qd.screenBits.bounds);
				break;
			case inMenuBar:
				SetCursor(&qd.arrow);
				DoMenu ( MenuSelect ( theEvent->where ));
				break;
			default:
				SysBeep(1);
				break;
		}
	}
	return aborted;
}

Boolean HandleAbortKeyDown(EventRecord *theEvent)
{
	char theChar = theEvent->message & charCodeMask;
	DialogPtr theDialog = FrontWindow();
	Boolean aborted = false;

	if (GetWRefCon(theDialog) == kProgressDialogID) {

		// if escape, set the proper abort flag
		if (((theEvent->modifiers & cmdKey) && theChar == '.') || theChar == 0x1b) {
			long ticks;
			aborted = true;
			HiliteDControl(theDialog, progressCancel, 1);
			Delay(8, &ticks);
			HiliteDControl(theDialog, progressCancel, 0);
		}
	}
	return aborted;
}

//=====================================================================================
// pascal void UpdateBar(DialogPtr theDialog, short theItem)
//=====================================================================================
// Draws the progress bar for the generic progress dialog, according to the percentage
// stored in the global gProgressPercent.
//=====================================================================================

pascal void UpdateBar(DialogPtr theDialog, short theItem) 
{
	static RGBColor gBarBackground = { 0xcccc, 0xcccc, 0xffff };
	static RGBColor gBarForeground = { 0x4000, 0x4000, 0x4000 };
	static RGBColor gBlack         = { 0x0000, 0x0000, 0x0000 };
	static RGBColor gWhite         = { 0xffff, 0xffff, 0xffff };
	Boolean useBW = !(((CGrafPtr)theDialog)->portVersion & 0xc000) || (*((CGrafPtr)theDialog)->portPixMap)->pixelSize == 1;
	Rect itemRect, leftRect, rightRect;
	Handle itemHandle;
	GrafPtr oldPort;
	Fixed thePercent;
	short itemType;
	
	GetPort(&oldPort);
	SetPort(theDialog);
	thePercent = gProgressPercent;
	GetDItem(theDialog, theItem, &itemType, &itemHandle, &itemRect);
	PenSize(1, 1);
	if (useBW) PenPat(&qd.black);
	else RGBForeColor(&gBlack);
	FrameRect(&itemRect);
	InsetRect(&itemRect, 1, 1);
	rightRect = leftRect = itemRect;
	leftRect.right = itemRect.left +  FixRound(FixMul(thePercent, Long2Fix(itemRect.right - itemRect.left)));
	rightRect.left = leftRect.right;
	if (leftRect.right > leftRect.left) {
		if (useBW) PenPat(&qd.black);
		else RGBForeColor(&gBarForeground);
		PaintRect(&leftRect);
	}
	if (rightRect.left < rightRect.right) {
		if (useBW) PenPat(&qd.white);
		else RGBForeColor(&gBarBackground);
		PaintRect(&rightRect);
	}
	if (useBW) PenPat(&qd.black);
	else RGBForeColor(&gBlack);
	SetPort(oldPort);
}

void SetItemHandle(DialogPtr theDialog, short theItem, Handle newHandle)
{
	Handle itemHandle;
	short itemType;
	Rect itemRect;

	GetDItem(theDialog, theItem, &itemType, &itemHandle, &itemRect);
	SetDItem(theDialog, theItem, itemType, newHandle, &itemRect);
}

Handle GetItemHandle(DialogPtr theDialog, short theItem)
{
	Handle itemHandle;
	short itemType;
	Rect itemRect;

	GetDItem(theDialog, theItem, &itemType, &itemHandle, &itemRect);
	return itemHandle;
}

void UpdateDialogItem(DialogPtr theDialog, short theItem)
{
	Handle itemHandle;
	RgnHandle theRgn;
	short itemType;
	Rect itemRect;
	GrafPtr oldPort;
	
	if (theRgn = NewRgn()) {
		GetPort(&oldPort);
		SetPort(theDialog);
		GetDItem(theDialog, theItem, &itemType, &itemHandle, &itemRect);
		RectRgn(theRgn, &itemRect);
		UpdateDialog(theDialog, theRgn);
		SetPort(oldPort);
		DisposeRgn(theRgn);
	}
}

void HiliteDControl(DialogPtr theDialog, short theItem, short theVal)
{
	Handle itemHandle;
	short itemType;
	Rect itemRect;
	GrafPtr oldPort;

	GetPort(&oldPort);
	SetPort(theDialog);
	GetDItem(theDialog, theItem, &itemType, &itemHandle, &itemRect);
	HiliteControl((ControlHandle)itemHandle, theVal);
	SetPort(oldPort);
}

//==================================================================================================================================
// OSErr LoadPrefsHandle(OSType type, short index, Handle *theHandle)
//==================================================================================================================================
// Reads the specified resource from the Pathmaker preferences file.
//==================================================================================================================================

OSErr LoadPrefsHandle(OSType type, short index, Handle *theHandle)
{
	return LoadHandleFromResource(GetPrefsSpec(), type, index, theHandle);
}

//==================================================================================================================================
// OSErr SavePrefsHandle(OSType type, short index, Handle theHandle, short *id)
//==================================================================================================================================
// Saves the specified handle to the Pathmaker preferences file as a resource.
//==================================================================================================================================

OSErr SavePrefsHandle(OSType type, short index, Handle theHandle, short *id)
{
	return SaveHandleAsResource(GetPrefsSpec(), 'pref', type, index, theHandle, id);
}

//==================================================================================================================================
// OSErr LoadHandleFromResource(FSSpec *file, OSType type, short index, Handle *theHandle)
// OSErr LoadHandleFromResource(short theFile, OSType type, short index, Handle *theHandle)
//==================================================================================================================================
// Reads the specified resource from the given file file and detaches it.
//==================================================================================================================================

OSErr LoadHandleFromResource(FSSpec *file, OSType type, short index, Handle *theHandle)
{
	OSErr theErr = noErr;
	short theFile = FSpOpenResFile(file, fsRdPerm);
	if (theFile != -1) {
		theErr = LoadHandleFromResource(theFile, type, index, theHandle);
		CloseResFile(theFile);
	} else theErr = ResError();
	return theErr;
}

OSErr LoadHandleFromResource(short theFile, OSType type, short index, Handle *theHandle)
{
	short oldRes = CurResFile();
	UseResFile(theFile);
	OSErr theErr = noErr;
	if (*theHandle = Get1Resource(type, index)) DetachResource(*theHandle);
	else theErr = fnfErr;	// need to signal something since ResError() == 0
	UseResFile(oldRes);
	return theErr;
}

//==================================================================================================================================
// OSErr SaveHandleAsResource(FSSpec *file, OSType fileType, OSType type, short index, Handle *theHandle, short *id)
// OSErr SaveHandleAsResource(short theFile, OSType type, short index, Handle theHandle, short *id)
//==================================================================================================================================
// Writes the specified handle to the given file as a resource.
//==================================================================================================================================

OSErr SaveHandleAsResource(FSSpec *file, OSType fileType, OSType type, short index, Handle theHandle, short *id)
{
	OSErr theErr = noErr;
	FSpCreateResFile(file, kCreator, fileType, 0);
	short theFile = FSpOpenResFile(file, fsRdWrPerm);
	if (theFile != -1) {
		theErr = SaveHandleAsResource(theFile, type, index, theHandle, id);
		CloseResFile(theFile);
	} else theErr = ResError();
	return theErr;
}

OSErr SaveHandleAsResource(short theFile, OSType type, short index, Handle theHandle, short *id)
{
	short oldRes = CurResFile();
	UseResFile(theFile);
	OSErr theErr = noErr;
	if (id) *id = index;
	Handle oldResource = Get1Resource(type, index);
	if (oldResource) {
		RmveResource(oldResource);
		theErr = ResError();
		if (theErr == noErr) {
			DisposeHandle(oldResource);
			UpdateResFile(theFile);
		} else ReleaseResource(oldResource);
	}
	if (theErr == noErr) {
		AddResource(theHandle, type, index, (StringPtr)"\p");
		theErr = ResError();
		if (theErr == noErr) {
			WriteResource(theHandle);
			theErr = ResError();
			if (theErr == noErr) {
				UpdateResFile(theFile);
				theErr = ResError();
			}
			DetachResource(theHandle);
		}
	}
	UseResFile(oldRes);
	return theErr;
}

//==================================================================================================================================
// FSSpec *GetPrefsSpec(void)
//==================================================================================================================================
// Returns an FSSpec pointing to our preferences file.
//==================================================================================================================================

FSSpec *GetPrefsSpec(void)
{
	static FSSpec theSpec = { 0, 0, "\p" };
	if (!*theSpec.name) {
		FindFolder(kOnSystemDisk, kPreferencesFolderType, kCreateFolder, &theSpec.vRefNum, &theSpec.parID);
		FSMakeFSSpec(theSpec.vRefNum, theSpec.parID, kPrefsFileName, &theSpec);
	}
	return &theSpec;
}

void LoadPrefs(void)
{
	Handle theHandle;
	OSErr theErr = LoadPrefsHandle('Pref', 0, &theHandle);
	if (theErr != noErr) {
		theErr = PtrToHand(&gDefaultPrefs, &theHandle, sizeof(Prefs));
		theErr = SavePrefsHandle('Pref', 0, theHandle);
	}
	gPrefs = (PrefsHandle)theHandle;
	theErr = LoadPrefsHandle('E2Ty', 0, &theHandle);
	if (theErr != noErr) {
		theHandle = Get1Resource('E2Ty', 0);
		if (theHandle) {
			DetachResource(theHandle);
			theErr = SavePrefsHandle('E2Ty', 0, theHandle);
		}
	}
	gMapResource = theHandle;
}

void SavePrefs(void)
{
	OSErr theErr = SavePrefsHandle('Pref', 0, (Handle)gPrefs);
	if (theErr == noErr) theErr = SavePrefsHandle('E2Ty', 0, gMapResource);
}

void SetWindowPosition(WindowPtr theWindow, Point thePosition)
{
	Point centerPos;
	Rect monRect;

	if (gHasCQD) monRect = (*GetMainDevice())->gdRect;
	else monRect = qd.screenBits.bounds;
	
	centerPos.h = (monRect.right - monRect.left) - (theWindow->portRect.right - theWindow->portRect.left);
	centerPos.v = (monRect.bottom - monRect.top) - (theWindow->portRect.bottom - theWindow->portRect.top);
	centerPos.h /= 2;
	centerPos.v /= 3;
	centerPos.h += monRect.left;
	centerPos.v += monRect.top + 20;
	if (thePosition.h || thePosition.v) {
		Rect newRect = theWindow->portRect;
		RgnHandle theRgn;
		OffsetRect(&newRect, thePosition.h - newRect.left, thePosition.v - newRect.top);
		if (theRgn = NewRgn()) {
			SetRectRgn(theRgn, newRect.left + 4, newRect.top - 20 + 4, newRect.right - 4, newRect.top - 4);
			SectRgn(theRgn, GetGrayRgn(), theRgn);
			if (EmptyRgn(theRgn)) thePosition = centerPos;
			DisposeRgn(theRgn);
		}
	} else thePosition = centerPos;
	MoveWindow(theWindow, thePosition.h, thePosition.v, false);
}

void GetWindowPosition(WindowPtr theWindow, Point *thePosition)
{
	GrafPtr oldPort;
	GetPort(&oldPort);
	SetPort(theWindow);
	thePosition->h = thePosition->v = 0;
	LocalToGlobal(thePosition);
	SetPort(oldPort);
}

void ForceFolderUpdate(long dirID, short vRefNum)
{
	static CInfoPBRec block;
	
	block.hFileInfo.ioCompletion = nil;
	block.hFileInfo.ioNamePtr = nil;
	block.hFileInfo.ioVRefNum = vRefNum;
	block.hFileInfo.ioDirID = dirID;
	block.hFileInfo.ioFDirIndex = -1;
	PBGetCatInfoAsync(&block);
	while (block.hFileInfo.ioResult == 1) GiveTime();
	GetDateTime(&block.dirInfo.ioDrMdDat);
	PBSetCatInfoAsync(&block);
//	while (block.hFileInfo.ioResult == 1) GiveTime();
}