/*

     File: MyWindowController.m

 Abstract: This sample's main NSWindowController

  Version: 1.1

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#import "MyWindowController.h"

@implementation MyWindowController

// key values for dictionary in NSTrackingAreas's userInfo

enum {

    kTrackingArea1 = 1,     // left-most tracking area (horiz image flip tracking)

    kTrackingArea2          // right-most tracking area (rotation image tracking)

};

// key for dictionary in NSTrackingAreas's userInfo

NSString* kTrackerKey = @"whichTracker";

// -------------------------------------------------------------------------------

//  awakeFromNib

//

//  Once the nib is loaded, apply images to the image views and load the sounds.

// -------------------------------------------------------------------------------

- (void)awakeFromNib

{

    // load both images and set them to their proper NSImageView

    NSImage* theImage1 = [NSImage imageNamed:@"LakeDonPedro1"];

    [myImageView1 setImage:theImage1];

    NSImage* theImage2 = [NSImage imageNamed:@"LakeDonPedro2"];

    [myImageView2 setImage:theImage2];

    // turn on tracking areas automatically at launch

    [self myAddTrackingArea];

    soundIn = [[NSSound soundNamed:@"inSound"] retain];

    soundOut = [[NSSound soundNamed:@"outSound"] retain];

    inTrackArea2 = NO;  // initialize track area 2 flag used in mouseMoved method

}

// -------------------------------------------------------------------------------

//  myRemoveTrackingArea

//

//  Called when the user clicks the "Activate Tracking Area" checkbox to turn

//  off all tracking areas.

// -------------------------------------------------------------------------------

- (void)myRemoveTrackingArea

{

    if (myTrackingArea1)

    {

        [myImageView1 removeTrackingArea: myTrackingArea1];

        [myTrackingArea1 release];

        myTrackingArea1 = nil;

    }

    if (myTrackingArea2)

    {

        [myImageView2 removeTrackingArea: myTrackingArea2];

        [myTrackingArea2 release];

        myTrackingArea2 = nil;

    }

}

// -------------------------------------------------------------------------------

//  myAddTrackingArea

//

//  Called when the user clicks the "Activate Tracking Area" checkbox to turn

//  on all tracking areas.

//

//  It uses a custom dictionary as the NSTrackingArea's 'userInfo'.

//  This is used later to identify which tracking area is currently being tracked in

//  our mouseMove, mousEnter, mouseExited methods. This illustrates how you can manage

//  multiple tracking areas setup outside the various NSViews.

//

// -------------------------------------------------------------------------------

- (void)myAddTrackingArea

{

    [self myRemoveTrackingArea];

    NSTrackingAreaOptions trackingOptions =

        NSTrackingMouseMoved | NSTrackingEnabledDuringMouseDrag | NSTrackingMouseEnteredAndExited |

        NSTrackingActiveInActiveApp;

    NSDictionary* trackerData1 = [NSDictionary dictionaryWithObjectsAndKeys:

                                    [NSNumber numberWithInt: kTrackingArea1], kTrackerKey, nil];

    myTrackingArea1 = [[NSTrackingArea alloc]

                        initWithRect: [myImageView1 bounds] // in our case track the entire view

                        options: trackingOptions

                        owner: self

                        userInfo: trackerData1];

    [myImageView1 addTrackingArea: myTrackingArea1];

    NSDictionary* trackerData2 = [NSDictionary dictionaryWithObjectsAndKeys:

                                    [NSNumber numberWithInt: kTrackingArea2], kTrackerKey, nil];

    myTrackingArea2 = [[NSTrackingArea alloc]

                        initWithRect: [myImageView2 bounds] // in our case track the entire view

                        options: trackingOptions

                        owner: self

                        userInfo: trackerData2];

    [myImageView2 addTrackingArea: myTrackingArea2];

    // note: the 3rd tracking area resides in CustomView class

}

// -------------------------------------------------------------------------------

//  dealloc

// -------------------------------------------------------------------------------

-(void)dealloc

{

    [self myRemoveTrackingArea];

    [super dealloc];

}

// -------------------------------------------------------------------------------

//  getTrackerIDFromDict:dict

//

//  Used in obtaining dictionary entry info from the 'userData', used by each

//  mouse event method.  It helps determine which tracking area is being tracked.

// -------------------------------------------------------------------------------

- (int)getTrackerIDFromDict:(NSDictionary *)dict

{

    id whichTracker = [dict objectForKey: kTrackerKey];

    return [whichTracker intValue];

}

// -------------------------------------------------------------------------------

//  activateTrackingArea:sender

//

//  The user wants to activate or de-activate the tracking areas.

// -------------------------------------------------------------------------------

- (IBAction)activateTrackingArea:(id)sender

{

    if ([[sender selectedCell] state])

    {

        // reset the image view's rotation position:

        // we do this because 'myImageView2' may have already been rotated,

        // we need the proper initial frame/bounds when adding add back the NSTrackingArea:

        //

        [myImageView2 setBoundsRotation: 0.0];

        [myImageView2 setNeedsDisplay: YES];    // make sure the initial rotated image is immediately drawn

        [self myAddTrackingArea];               // add the tracking areas managed by this class

        [myCustomView myAddTrackingArea];       // add the tracking area from our CustomView

    }

    else

    {

        [self myRemoveTrackingArea];            // remove the tracking areas managed by this class

        [myCustomView myRemoveTrackingArea];    // remove the tracking area from our CustomView

    }

}

// -------------------------------------------------------------------------------

//  myHandleTrackAction1:mouseEntered

//

//  This method determines what happens when the mouse enteres 'myImageView1'.

//  It turns flips the image and redraws it.

// -------------------------------------------------------------------------------

- (void)myHandleTrackAction1:(BOOL)mouseEntered

{

    [myImageView1 rotateByAngle:180.0];

    [myImageView1 setNeedsDisplay: YES];

}

// -------------------------------------------------------------------------------

//  myHandleTrackAction2:mouseEntered

//

//  This method determines what happens when the mouse enteres 'myImageView2'.

//  This method doesn't do anything because 'mouseMoved' does all the work.

// -------------------------------------------------------------------------------

- (void)myHandleTrackAction2:(BOOL)mouseEntered

{

    // do something for this view...

}

// -------------------------------------------------------------------------------

//  mouseMoved:event

// -------------------------------------------------------------------------------

//  Because we installed NSTrackingArea with "NSTrackingMouseMoved",

//  as an option, this method will be called.  Each time it's called we rotate

//  trackin area #2's image by 5 degrees.

// -------------------------------------------------------------------------------

- (void)mouseMoved:(NSEvent*)event

{

    if (inTrackArea2)

    {

        [myImageView2 rotateByAngle:-5.0];

        [myImageView2 setNeedsDisplay: YES];

    }

}

// -------------------------------------------------------------------------------

//  handleEnteredExited:entered:withTrackingDict

// -------------------------------------------------------------------------------

//  The main routine for handling both entered and exit tracking events.

// -------------------------------------------------------------------------------

- (void)handleEnteredExited:(BOOL)entered withTrackingDict:(NSDictionary*)trackingDict

{

    if (trackingDict != NULL)

    {

        // sound out if the "Use Tracking Sound" checkbox is checked

        if ([[useSoundCheck selectedCell] state])

        {

            if (entered)

                [soundIn play];

            else

                [soundOut play];

        }

        // which tracking area is being tracked?

        int whichTrackerID = [self getTrackerIDFromDict:trackingDict];

        switch (whichTrackerID)

        {

            case kTrackingArea1:

                inTrackArea2 = NO;  // used to flag tracking area 2 because 'mouseMoved' doesn't provide userData

                [self myHandleTrackAction1:entered];

                break;

            case kTrackingArea2:

                inTrackArea2 = YES;

                [self myHandleTrackAction2:entered];

                break;

        }

    }

}

// -------------------------------------------------------------------------------

//  mouseEntered:event

// -------------------------------------------------------------------------------

//  Because we installed NSTrackingArea with "NSTrackingMouseEnteredAndExited"

//  as an option, this method will be called.

// -------------------------------------------------------------------------------

- (void)mouseEntered:(NSEvent*)event

{

    [self handleEnteredExited:  YES // YES = enter

                                withTrackingDict:[event userData]]; // determine which tracking area

}

// -------------------------------------------------------------------------------

//  mouseExited:event

// -------------------------------------------------------------------------------

//  Because we installed NSTrackingArea with "NSTrackingMouseEnteredAndExited",

//  as an option, this method will be called.

// -------------------------------------------------------------------------------

- (void)mouseExited:(NSEvent*)event

{

    [self handleEnteredExited:  NO // NO = exit

                                withTrackingDict:[event userData]]; // determine which tracking area

}

@end