TiUIProgressBar.m

/**
 * Appcelerator Titanium Mobile
 * Copyright (c) 2009-2010 by Appcelerator, Inc. All Rights Reserved.
 * Licensed under the terms of the Apache Public License
 * Please see the LICENSE included with this distribution for details.
 */
#ifdef USE_TI_UIPROGRESSBAR

#import "TiUIProgressBar.h"
#import "TiUtils.h"
#import "WebFont.h"

@implementation TiUIProgressBar

-(id)initWithStyle:(UIProgressViewStyle)style_
{
	if (self = [super initWithFrame:CGRectZero])
	{
		style = style_;
		min = 0;
		max = 1;
		[self setHidden:YES];
	}
	return self;
}

-(void)dealloc
{
	RELEASE_TO_NIL(progress);
	RELEASE_TO_NIL(messageLabel);
	[super dealloc];
}

-(CGSize)sizeForFont:(CGFloat)suggestedWidth
{
	NSString *value = [messageLabel text];
	UIFont *font = [messageLabel font];
	CGSize maxSize = CGSizeMake(suggestedWidth<=0 ? 480 : suggestedWidth, 1000);
	return [value sizeWithFont:font constrainedToSize:maxSize lineBreakMode:UILineBreakModeTailTruncation];
}

-(CGFloat)contentWidthForWidth:(CGFloat)suggestedWidth
{
	return [self sizeForFont:suggestedWidth].width;
}

-(CGFloat)contentHeightForWidth:(CGFloat)width
{
	CGSize fontSize = [self sizeForFont:width];
	CGSize progressSize = [progress sizeThatFits:fontSize];
	return fontSize.height + progressSize.height;
}

#pragma mark Accessors

-(UIProgressView*)progress
{
	if (progress==nil)
	{
		progress = [[UIProgressView alloc] initWithProgressViewStyle:style];
		
		[self addSubview:progress];
	}
	return progress;
}

-(UILabel *)messageLabel
{
	if (messageLabel==nil)
	{
		messageLabel=[[UILabel alloc] init];
		[messageLabel setBackgroundColor:[UIColor clearColor]];
		
		[self setNeedsLayout];
		[self addSubview:messageLabel];
	}
	return messageLabel;
}

#pragma mark Repositioning

-(void)layoutSubviews
{
	if(progress == nil)
	{
		return;
	}

	CGRect boundsRect = [self bounds];
	
	CGSize barSize = [progress sizeThatFits:boundsRect.size];

	CGPoint centerPoint = CGPointMake(boundsRect.origin.x + (boundsRect.size.width/2),
			boundsRect.origin.y + (boundsRect.size.height/2));

	[progress setBounds:CGRectMake(0, 0, barSize.width, barSize.height)];

	if (messageLabel == nil)
	{
		[progress setCenter:centerPoint];
		return;
	}

	CGSize messageSize = [messageLabel sizeThatFits:boundsRect.size];
	
	float fittingHeight = barSize.height + messageSize.height + 5;
	
	[progress setCenter:CGPointMake(centerPoint.x,
			centerPoint.y + (fittingHeight - barSize.height)/2)];

	[messageLabel setBounds:CGRectMake(0, 0, messageSize.width, messageSize.height)];
	[messageLabel setCenter:CGPointMake(centerPoint.x,
			centerPoint.y - (fittingHeight - messageSize.height)/2)];
}

#pragma mark Properties

-(void)setMin_:(id)value
{
	min = [TiUtils floatValue:value];
}

-(void)setMax_:(id)value
{
	max = [TiUtils floatValue:value];
}

-(void)setValue_:(id)value
{
	CGFloat newValue = ([TiUtils floatValue:value] - min) / (max-min);
	[[self progress] setProgress:newValue];
}


-(void)setFont_:(id)value
{
	WebFont * newFont = [TiUtils fontValue:value def:[WebFont defaultFont]];
	[[self messageLabel] setFont:[newFont font]];
	[self setNeedsLayout];
}


-(void)setColor_:(id)value
{
	UIColor * newColor = [[TiUtils colorValue:value] _color];
	if (newColor == nil) {
		newColor = [UIColor blackColor];
	}
	[[self messageLabel] setTextColor:newColor];
}

-(void)setMessage_:(id)value
{
	NSString * text = [TiUtils stringValue:value];
	if ([text length]>0)
	{
		[[self messageLabel] setText:text];
	}
	else
	{
		[messageLabel removeFromSuperview];
		RELEASE_TO_NIL(messageLabel);
	}
	[self setNeedsLayout];
}


@end

#endif