//
//  RMMarker.m
//
// Copyright (c) 2008-2009, Route-Me Contributors
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright notice, this
//   list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright notice,
//   this list of conditions and the following disclaimer in the documentation
//   and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.

#import "RMMarker.h"
#import "RMPixel.h"

@implementation RMMarker

@synthesize projectedLocation;
@synthesize enableDragging;
@synthesize enableRotation;
@synthesize data;
@synthesize label;
@synthesize textForegroundColor;
@synthesize textBackgroundColor;

#define defaultMarkerAnchorPoint CGPointMake(0.5, 0.5)

+ (UIFont *)defaultFont
{
	return [UIFont systemFontOfSize:15];
}

// init
- (id)init
{
    if (!(self = [super init]))
        return nil;

    label = nil;
    textForegroundColor = [UIColor blackColor];
    textBackgroundColor = [UIColor clearColor];
    enableDragging = YES;
    enableRotation = YES;

    return self;
}

- (id)initWithUIImage:(UIImage *)image
{
	return [self initWithUIImage:image anchorPoint:defaultMarkerAnchorPoint];
}

- (id)initWithUIImage:(UIImage *)image anchorPoint:(CGPoint)_anchorPoint
{
	if (!(self = [self init]))
		return nil;

	self.contents = (id)[image CGImage];
	self.bounds = CGRectMake(0, 0, image.size.width, image.size.height);
	self.anchorPoint = _anchorPoint;

	self.masksToBounds = NO;
	self.label = nil;

	return self;
}

- (void)replaceUIImage:(UIImage *)image
{
	[self replaceUIImage:image anchorPoint:defaultMarkerAnchorPoint];
}

- (void)replaceUIImage:(UIImage *)image anchorPoint:(CGPoint)_anchorPoint
{
	self.contents = (id)[image CGImage];
	self.bounds = CGRectMake(0, 0, image.size.width, image.size.height);
	self.anchorPoint = _anchorPoint;

	self.masksToBounds = NO;
}

- (void)setLabel:(UIView *)aView
{
	if (label == aView)
		return;

	if (label != nil) {
		[[label layer] removeFromSuperlayer];
		[label release]; label = nil;
	}
	
	if (aView != nil) {
		label = [aView retain];
		[self addSublayer:[label layer]];
	}
}

- (void)changeLabelUsingText:(NSString *)text
{
	CGPoint position = CGPointMake([self bounds].size.width / 2 - [text sizeWithFont:[RMMarker defaultFont]].width / 2, 4);
	[self changeLabelUsingText:text position:position font:[RMMarker defaultFont] foregroundColor:[self textForegroundColor] backgroundColor:[self textBackgroundColor]];
}

- (void)changeLabelUsingText:(NSString*)text position:(CGPoint)position
{
	[self changeLabelUsingText:text position:position font:[RMMarker defaultFont] foregroundColor:[self textForegroundColor] backgroundColor:[self textBackgroundColor]];
}

- (void)changeLabelUsingText:(NSString *)text font:(UIFont *)font foregroundColor:(UIColor *)textColor backgroundColor:(UIColor *)backgroundColor
{
	CGPoint position = CGPointMake([self bounds].size.width / 2 - [text sizeWithFont:font].width / 2, 4);
	[self setTextForegroundColor:textColor];
	[self setTextBackgroundColor:backgroundColor];
	[self changeLabelUsingText:text  position:position font:font foregroundColor:textColor backgroundColor:backgroundColor];
}

- (void)changeLabelUsingText:(NSString *)text position:(CGPoint)position font:(UIFont *)font foregroundColor:(UIColor *)textColor backgroundColor:(UIColor *)backgroundColor
{
	CGSize textSize = [text sizeWithFont:font];
	CGRect frame = CGRectMake(position.x, position.y, textSize.width+4, textSize.height+4);

	UILabel *aLabel = [[UILabel alloc] initWithFrame:frame];
	[self setTextForegroundColor:textColor];
	[self setTextBackgroundColor:backgroundColor];
	[aLabel setNumberOfLines:0];
	[aLabel setAutoresizingMask:UIViewAutoresizingFlexibleWidth];
	[aLabel setBackgroundColor:backgroundColor];
	[aLabel setTextColor:textColor];
	[aLabel setFont:font];
	[aLabel setTextAlignment:UITextAlignmentCenter];
	[aLabel setText:text];

	[self setLabel:aLabel];
	[aLabel release];
}

- (void)toggleLabel
{
	if (self.label == nil)
		return;
	
	if ([self.label isHidden]) {
		[self showLabel];
	} else {
		[self hideLabel];
	}
}

- (void)showLabel
{
	if ([self.label isHidden]) {
		// Using addSublayer will animate showing the label, whereas setHidden is not animated
		[self addSublayer:[self.label layer]];
		[self.label setHidden:NO];
	}
}

- (void)hideLabel
{
	if (![self.label isHidden]) {
		// Using removeFromSuperlayer will animate hiding the label, whereas setHidden is not animated
		[[self.label layer] removeFromSuperlayer];
		[self.label setHidden:YES];
	}
}

- (void)dealloc 
{
    self.data = nil;
    self.label = nil;
    self.textForegroundColor = nil;
    self.textBackgroundColor = nil;
	[super dealloc];
}

- (void)zoomByFactor:(float)zoomFactor near:(CGPoint)center
{
	if (enableDragging) {
		self.position = RMScaleCGPointAboutPoint(self.position, zoomFactor, center);
	}
}

- (void)moveBy:(CGSize)delta
{
	if (enableDragging) {
		[super moveBy:delta];
	}
}

@end