//

// WDArrowheadCell.m

// Inkpad

//

// Created by Steve Sprang on 10/16/13.

// Copyright (c) 2013 Taptrix, Inc. All rights reserved.

//

#import "WDArrowhead.h"

#import "WDArrowheadCell.h"

#import "WDDrawingController.h"

#import "WDInspectableProperties.h"

#import "WDPropertyManager.h"

#define kArrowInset 15

#define kArrowWidth 72

#define kArrowHeight 46

@interface WDArrowSeparatorView : UIView

@end

@implementation WDArrowSeparatorView

- (void) drawRect:(CGRect)rect

{

CGRect frame = self.frame;

CGContextRef ctx = UIGraphicsGetCurrentContext();

CGFloat lengths[] = {2};

float y = floor(CGRectGetMidY(frame)) + 0.5f;

[[[WDArrowheadCell tintColor] colorWithAlphaComponent:0.5f] set];

CGContextSetLineWidth(ctx, 1.0);

CGContextSetLineDash(ctx, 0, lengths, 1);

CGContextMoveToPoint(ctx, 0, y);

CGContextAddLineToPoint(ctx, CGRectGetWidth(frame), y);

CGContextStrokePath(ctx);

}

@end

@implementation WDArrowheadCell

@synthesize startArrowButton = startArrowButton_;

@synthesize endArrowButton = endArrowButton_;

@synthesize arrowhead = arrowhead_;

@synthesize drawingController = drawingController_;

- (id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier

{

self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];

if (!self) {

return nil;

}

startArrowButton_ = [UIButton buttonWithType:UIButtonTypeCustom];

startArrowButton_.frame = CGRectMake(0,0,kArrowWidth,kArrowHeight);

[startArrowButton_ setBackgroundImage:[self selectedBackground] forState:UIControlStateSelected];

startArrowButton_.tintColor = [WDArrowheadCell tintColor];

[startArrowButton_ addTarget:self action:@selector(leftArrowTapped:) forControlEvents:UIControlEventTouchUpInside];

[self.contentView addSubview:startArrowButton_];

endArrowButton_ = [UIButton buttonWithType:UIButtonTypeCustom];

endArrowButton_.frame = CGRectMake(self.contentView.frame.size.width - kArrowWidth,0,kArrowWidth,kArrowHeight);

endArrowButton_.autoresizingMask = UIViewAutoresizingFlexibleLeftMargin;

[endArrowButton_ setBackgroundImage:[self selectedBackground] forState:UIControlStateSelected];

endArrowButton_.tintColor = [WDArrowheadCell tintColor];

[endArrowButton_ addTarget:self action:@selector(rightArrowTapped:) forControlEvents:UIControlEventTouchUpInside];

[self.contentView addSubview:endArrowButton_];

CGRect frame = CGRectInset(self.contentView.frame, kArrowWidth, 0);

WDArrowSeparatorView *separator = [[WDArrowSeparatorView alloc] initWithFrame:frame];

separator.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;

separator.backgroundColor = nil;

separator.opaque = NO;

[self.contentView addSubview:separator];

return self;

}

- (void)dealloc

{

[[NSNotificationCenter defaultCenter] removeObserver:self];

}

- (void) setDrawingController:(WDDrawingController *)drawingController

{

drawingController_ = drawingController;

[[NSNotificationCenter defaultCenter] removeObserver:self];

[[NSNotificationCenter defaultCenter] addObserver:self

selector:@selector(invalidProperties:)

name:WDInvalidPropertiesNotification

object:drawingController_.propertyManager];

}

- (void) invalidProperties:(NSNotification *)aNotification

{

NSSet *properties = [aNotification.userInfo objectForKey:WDInvalidPropertiesKey];

if ([properties intersectsSet:[NSSet setWithObjects:WDStartArrowProperty, WDEndArrowProperty, nil]]) {

WDStrokeStyle *strokeStyle = [drawingController_.propertyManager defaultStrokeStyle];

self.startArrowButton.selected = [strokeStyle.startArrow isEqualToString:arrowhead_];

self.endArrowButton.selected = [strokeStyle.endArrow isEqualToString:arrowhead_];

}

}

- (void) leftArrowTapped:(UIButton *)sender

{

[drawingController_ setValue:self.arrowhead forProperty:WDStartArrowProperty];

}

- (void) rightArrowTapped:(UIButton *)sender

{

[drawingController_ setValue:self.arrowhead forProperty:WDEndArrowProperty];

}

- (void) setArrowhead:(NSString *)arrowhead

{

if (arrowhead_ == arrowhead) {

return;

}

arrowhead_ = arrowhead;

UIImage *image = [self imageForArrow:arrowhead start:YES];

[startArrowButton_ setImage:image forState:UIControlStateSelected];

[startArrowButton_ setImage:[image imageWithRenderingMode:UIImageRenderingModeAlwaysTemplate] forState:UIControlStateNormal];

image = [self imageForArrow:arrowhead start:NO];

[endArrowButton_ setImage:image forState:UIControlStateSelected];

[endArrowButton_ setImage:[image imageWithRenderingMode:UIImageRenderingModeAlwaysTemplate] forState:UIControlStateNormal];

}

- (UIImage *) selectedBackground

{

UIImage *selectedBackground_ = nil;

if (!selectedBackground_) {

UIGraphicsBeginImageContextWithOptions(CGSizeMake(kArrowWidth,kArrowHeight), NO, 0);

CGContextRef ctx = UIGraphicsGetCurrentContext();

[[UIColor colorWithRed:0.0f green:(118.0f / 255) blue:1.0f alpha:1.0f] set];

CGContextFillRect(ctx, CGRectInset(CGRectMake(0, 0, kArrowWidth, kArrowHeight), 4, 4));

selectedBackground_ = UIGraphicsGetImageFromCurrentImageContext();

UIGraphicsEndImageContext();

}

return selectedBackground_;

}

- (UIImage *) imageForArrow:(NSString *)arrowID start:(BOOL)isStart

{

WDArrowhead *arrow = [WDArrowhead arrowheads][arrowID];

CGContextRef ctx;

float scale = 3.0f;

float midY = floor(kArrowHeight / 2) + 0.5f;

float startX = kArrowInset + arrow.insetLength * scale;

UIGraphicsBeginImageContextWithOptions(CGSizeMake(kArrowWidth,kArrowHeight), NO, 0);

ctx = UIGraphicsGetCurrentContext();

[[UIColor whiteColor] set];

CGContextSetLineWidth(ctx, scale);

CGContextSetLineCap(ctx, kCGLineCapRound);

if (!arrow) {

CGContextMoveToPoint(ctx, kArrowInset, midY);

CGContextAddLineToPoint(ctx, kArrowWidth - kArrowInset, midY);

} else if (isStart) {

[arrow addArrowInContext:ctx position:CGPointMake(startX, midY) scale:scale angle:M_PI useAdjustment:NO];

CGContextFillPath(ctx);

CGContextMoveToPoint(ctx, startX, midY);

CGContextAddLineToPoint(ctx, kArrowWidth - kArrowInset, midY);

} else {

[arrow addArrowInContext:ctx position:CGPointMake(kArrowWidth - startX, midY) scale:scale angle:0 useAdjustment:NO];

CGContextFillPath(ctx);

CGContextMoveToPoint(ctx, kArrowWidth - startX, midY);

CGContextAddLineToPoint(ctx, kArrowInset, midY);

}

CGContextStrokePath(ctx);

UIImage *result = UIGraphicsGetImageFromCurrentImageContext();

UIGraphicsEndImageContext();

return result;

}

+ (UIColor *) tintColor

{

return [UIColor colorWithRed:(66.0f / 255) green:(102.0f / 255) blue:(151.0f / 255) alpha:1.0f];

}

@end