//
//  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 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];

    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)dealloc
{
    self.userInfo = nil;
    self.label = nil;
    self.textForegroundColor = nil;
    self.textBackgroundColor = nil;
    [super dealloc];
}

#pragma mark -

- (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];
    }
}

@end