//

//  LassoStyleCropMarker.m

//  Cropped Image

//

//  Created by jcr on Thu Aug 01 2002.

//  Copyright (c) 2002 Apple Computer, Inc. All rights reserved.

//

#import "LassoStyleCropMarker.h"

#import "NSBezierPathExtensions.h"

@implementation LassoStyleCropMarker

- (void) drawCropMarker

  {

  if (selectedPath)

        {

        NSBezierPath 

            *path = trackingMode == trackSelecting ? [selectedPath closedPath] : selectedPath;

        [fillColor set];

        [path fill];

        [strokeColor set];

        [path stroke];

        }

  }

- (void) dealloc

    {

    if (selectedPath)

        [selectedPath release];

    [super dealloc];

    }

- (void) mouseDown:(NSEvent *) theEvent 

    { 

    lastLocation = [target convertPoint:[theEvent locationInWindow] fromView:nil];

    if ([[selectedPath closedPath] containsPoint: lastLocation])

        {

        [self startMovingAtPoint:lastLocation]; 

        return;

        }

    [self startSelectingAtPoint:lastLocation];

    }

- (NSRect) selectedRect

    {

    return [selectedPath isEmpty] ? NSZeroRect : [selectedPath bounds];

    }   

- (void) startSelectingAtPoint:(NSPoint) where

    {

    lastLocation = where;

    trackingMode = trackSelecting;

    [selectedPath removeAllPoints];

    [selectedPath moveToPoint:where];

    }

- (NSBezierPath *) selectedPath {  return selectedPath; }

- (void) continueMovingAtPoint:(NSPoint) where

    {

    NSAffineTransform 

        *transform = [NSAffineTransform transform];

    [transform translateXBy: where.x - lastLocation.x yBy:where.y - lastLocation.y];

    [selectedPath transformUsingAffineTransform:transform];

    lastLocation = where;

    }

- (void) continueSelectingAtPoint:(NSPoint) where { [selectedPath lineToPoint:where]; }

- (void) stopSelectingAtPoint:(NSPoint) where

    {

    [selectedPath lineToPoint:where];

    [selectedPath closePath];

    trackingMode = trackNone;

    }

@end

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