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*/

#import "Demo2DOverlayView.h"

@implementation Demo2DOverlayView

- (id)initWithFrame:(NSRect)frame

{

    self = [super initWithFrame:frame];

    if (self) {

        // Initialization code here.

    textAttributes = [[NSDictionary alloc] initWithObjectsAndKeys:

        [NSFont boldSystemFontOfSize:48.0f],NSFontAttributeName,

        [NSColor colorWithCalibratedRed:1.0f

            green:0.2f

            blue:0.2f

            alpha:0.60f],NSForegroundColorAttributeName,

        nil];

    }

    return self;

}

- (BOOL)isOpaque

{

    return YES;

}

- (void)drawRect:(NSRect)rect

{

    NSRect bounds = [self bounds];

    NSSize textSize;

    int i;

    [[NSColor clearColor] set];

    NSRectFill(bounds);

    for(i = 0; i < NUM_LINES; i++)

    {

    float f = (i+1)/(double)NUM_LINES;

    [[NSColor colorWithCalibratedRed:1.0 green:1.0f*f blue:0.0f alpha:f] set];

    [NSBezierPath strokeLineFromPoint:NSMakePoint(lines[i][0].x,lines[i][0].y)

            toPoint:NSMakePoint(lines[i][1].x,lines[i][1].y)];

    }

    if(doSelection)

    {

        float minX, maxX, minY, maxY;

        minX = MIN(selectionBeginPoint.x,selectionEndPoint.x);

        maxX = MAX(selectionBeginPoint.x,selectionEndPoint.x);

        minY = MIN(selectionBeginPoint.y,selectionEndPoint.y);

        maxY = MAX(selectionBeginPoint.y,selectionEndPoint.y);

        [[NSColor colorWithCalibratedRed:0.0f green:0.0f blue:1.0f alpha:0.3f] set];

        NSRectFillUsingOperation(NSMakeRect(minX,minY,maxX-minX,maxY-minY),NSCompositeSourceOver);

        [[NSColor colorWithCalibratedRed:1.0f green:1.0f blue:1.0f alpha:0.8f] set];

        NSFrameRect(NSMakeRect(minX,minY,maxX-minX,maxY-minY));

    }

    //Debugging code... just to visualize the whole view bounds to debug tracking

    //code.

    //[[NSColor colorWithCalibratedRed:0.3f green:1.0f blue:0.3f alpha:0.4f] set];

    //NSRectFill([self bounds]);

    textSize = [@"2D Overlay" sizeWithAttributes:textAttributes];

    [@"2D Overlay" drawAtPoint:NSMakePoint(NSMidX(bounds)-textSize.width*.5f,

                    NSMidY(bounds)-textSize.height*.5f)

        withAttributes:textAttributes];

}

@end