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#include "common.h"

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#import "MuTextSelectView.h"

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#import "MuWord.h"

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@implementation MuTextSelectView

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{

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	NSArray *words;

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	CGSize pageSize;

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	UIColor *color;

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	CGPoint start;

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	CGPoint end;

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}

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- (id) initWithWords:(NSArray *)_words pageSize:(CGSize)_pageSize

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{

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	self = [super initWithFrame:CGRectMake(0,0,100,100)];

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	if (self)

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	{

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		[self setOpaque:NO];

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		words = [_words retain];

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		pageSize = _pageSize;

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		color = [[UIColor colorWithRed:0x25/255.0 green:0x72/255.0 blue:0xAC/255.0 alpha:0.5] retain];

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		UIPanGestureRecognizer *rec = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(onDrag:)];

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		[self addGestureRecognizer:rec];

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		[rec release];

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	}

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	return self;

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}

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-(void) dealloc

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{

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	[words release];

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	[color release];

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	[super dealloc];

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}

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- (NSArray *) selectionRects

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{

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	NSMutableArray *arr = [NSMutableArray array];

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	__block CGRect r;

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	[MuWord selectFrom:start to:end fromWords:words

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		onStartLine:^{

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			r = CGRectNull;

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		} onWord:^(MuWord *w) {

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			r = CGRectUnion(r, w.rect);

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		} onEndLine:^{

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			if (!CGRectIsNull(r))

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				[arr addObject:[NSValue valueWithCGRect:r]];

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		}];

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	return arr;

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}

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- (NSString *) selectedText

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{

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	__block NSMutableString *text = [NSMutableString string];

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	__block NSMutableString *line;

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	[MuWord selectFrom:start to:end fromWords:words

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		onStartLine:^{

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			line = [NSMutableString string];

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		} onWord:^(MuWord *w) {

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			if (line.length > 0)

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				[line appendString:@" "];

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			[line appendString:w.string];

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		} onEndLine:^{

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			if (text.length > 0)

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				[text appendString:@"\n"];

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			[text appendString:line];

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		}];

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	return text;

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}

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-(void) onDrag:(UIPanGestureRecognizer *)rec

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{

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	CGSize scale = fitPageToScreen(pageSize, self.bounds.size);

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	CGPoint p = [rec locationInView:self];

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	p.x /= scale.width;

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	p.y /= scale.height;

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	if (rec.state == UIGestureRecognizerStateBegan)

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		start = p;

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	end = p;

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	[self setNeedsDisplay];

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}

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- (void) drawRect:(CGRect)rect

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{

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	CGSize scale = fitPageToScreen(pageSize, self.bounds.size);

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	CGContextRef cref = UIGraphicsGetCurrentContext();

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	CGContextScaleCTM(cref, scale.width, scale.height);

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	__block CGRect r;

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	[color set];

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	[MuWord selectFrom:start to:end fromWords:words

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		onStartLine:^{

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			r = CGRectNull;

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		} onWord:^(MuWord *w) {

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			r = CGRectUnion(r, w.rect);

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		} onEndLine:^{

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			if (!CGRectIsNull(r))

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				UIRectFill(r);

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		}];

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}

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@end

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