/*

     File: InputIndicator.m

 Abstract: Subclass of NSView for displaying which key from the numeric pad is down.

  Version: 1.0

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 */

// ??? This should just dirty the appropriate rect

#import "InputIndicator.h"

@implementation InputIndicator

- (id)initWithFrame:(NSRect)rect {

    if (self = [super initWithFrame:rect]) {

    [self allocateGState];

    }

    return self;

}

- (void)drawRect:(NSRect)rect {

    NSImage *image = [NSImage imageNamed:@"keypad"];

    NSRect imageRect = NSMakeRect(0, 0, [image size].width, [image size].height);

    [image drawAtPoint:NSZeroPoint fromRect:imageRect operation:NSCompositeSourceOver fraction:1.0];

}

- (NSRect)rectFor:(NSInteger)cmd {

    CGFloat width = [self bounds].size.width / 4.0;

    CGFloat height = [self bounds].size.height / 5.0;

    CGFloat xLoc = 0.0, yLoc = 0.0;

    switch (cmd) {

        case GoUpRightCommand:      xLoc = 2 * width; yLoc = 3 * height; break;

        case GoUpCommand:       xLoc =     width; yLoc = 3 * height; break;

        case GoUpLeftCommand:       yLoc = 3 * height; break;

        case GoRightCommand:        xLoc = 2 * width; yLoc = 2 * height; break;

        case StopCommand:       xLoc =     width; yLoc = 2 * height; break;

        case GoLeftCommand:     yLoc = 2 * height; break;

        case GoDownRightCommand:    xLoc = 2 * width; yLoc =     height; break;

        case GoDownCommand:     xLoc =     width; yLoc =     height; break;

        case GoDownLeftCommand:     yLoc =     height; break;

        case FireCommand:       width *= 2; break;

        default:            return NSZeroRect;

    }

    return NSIntegralRect(NSMakeRect(xLoc, yLoc, width, height));

}

- (void)turnOn:(NSInteger)cmd {

    if (!highlighted[cmd]) {

        NSRect rect = [self rectFor:cmd];

        if (rect.size.width > 0.0) {

            rect = NSInsetRect(rect, 1.0, 1.0);

            [self lockFocus];

            [[NSColor whiteColor] set];

            [NSBezierPath strokeRect:rect];

            [self unlockFocus];

            highlighted[cmd] = YES;

        }

    }

}

- (void)turnOff:(NSInteger)cmd {

    if (highlighted[cmd]) {

        NSRect rect = [self rectFor:cmd];

        if (rect.size.width > 0.0) {

            [self lockFocus];

            [[NSImage imageNamed:@"keypad"] drawAtPoint:rect.origin fromRect:rect operation:NSCompositeSourceOver fraction:1.0];

            [self unlockFocus];

            highlighted[cmd] = NO;

        }

    }

}

@end