kmpdfkit_demo/PDFViewer/Source/PDFKeyboardToolbar/PDFKTColorPickView.m

//
//  PDFColorPickView.m
//  PDFReader
//
//  Copyright © 2014-2022 PDF Technologies, Inc. All Rights Reserved.
//
//  The PDF Reader Sample applications are licensed with a modified BSD license.
//  Please see License for details. This notice may not be removed from this file.
//

#import "PDFKTColorPickView.h"

@implementation PDFKTColorPickView
{
    NSMutableArray *_colors;
    UIView *_pickColor;
    UIImageView *_pickColorBack;
}
@synthesize colorPickDelegate = _colorPickDelegate;
- (id)initWithFrame:(CGRect)frame
{
    self = [super initWithFrame:frame];
    if (self) {
        // Initialization code
        _colors = [[NSMutableArray alloc]init];
        [self initColors];
        UIImage *pickImg = [UIImage imageNamed:@"color_view.png"];
        _pickColorBack = [[UIImageView alloc]initWithImage:pickImg];
        _pickColorBack.frame = CGRectMake(0, -70,pickImg.size.width,pickImg.size.height);
        [self addSubview:_pickColorBack];
        _pickColorBack.hidden = YES;
        _pickColor = [[UIView alloc] initWithFrame:CGRectMake(3, 3, 38, 38)];
        _pickColor.backgroundColor = [UIColor greenColor];
        _pickColor.layer.borderColor = [[UIColor grayColor] CGColor];
        _pickColor.layer.borderWidth = 0.7f;
        [_pickColorBack addSubview:_pickColor];
//        _pickColor.hidden = YES;
    }
    return self;
}

- (void)dealloc
{
    _colorPickDelegate = nil;
    [_colors release];
    [_pickColor release];
    [_pickColorBack release];
    [super dealloc];
}

- (void)initColors
{
    UIColor *color = [UIColor colorWithRed:219/255.0 green:3/255.0 blue:1/255.0 alpha:1];
    [_colors addObject:color];
    color = [UIColor colorWithRed:255/255.0 green:127/255.0 blue:0/255.0 alpha:1];
    [_colors addObject:color];
    color = [UIColor colorWithRed:253/255.0 green:135/255.0 blue:106/255.0 alpha:1];
    [_colors addObject:color];
    color = [UIColor colorWithRed:254/255.0 green:218/255.0 blue:28/255.0 alpha:1];
    [_colors addObject:color];
    color = [UIColor colorWithRed:87/255.0 green:218/255.0 blue:20/255.0 alpha:1];
    [_colors addObject:color];
    color = [UIColor colorWithRed:41/255.0 green:109/255.0 blue:209/255.0 alpha:1];
    [_colors addObject:color];
    color = [UIColor colorWithRed:207/255.0 green:27/255.0 blue:255/255.0 alpha:1];
    [_colors addObject:color];
    color = [UIColor colorWithRed:254/255.0 green:28/255.0 blue:133/255.0 alpha:1];
    [_colors addObject:color];
    color = [UIColor colorWithRed:0/255.0 green:0/255.0 blue:0/255.0 alpha:1];
    [_colors addObject:color];
    color = [UIColor colorWithRed:255/255.0 green:255/255.0 blue:255/255.0 alpha:1];
    [_colors addObject:color];
//    color = [UIColor colorWithRed:18/255.0 green:17/255.0 blue:77/255.0 alpha:1];
//    [_colors addObject:color];
//    color = [UIColor colorWithRed:78/255.0 green:24/255.0 blue:116/255.0 alpha:1];
//    [_colors addObject:color];
//    color = [UIColor colorWithRed:128/255.0 green:30/255.0 blue:113/255.0 alpha:1];
//    [_colors addObject:color];
//    color = [UIColor colorWithRed:224/255.0 green:43/255.0 blue:95/255.0 alpha:1];
//    [_colors addObject:color];
//    color = [UIColor colorWithRed:87/255.0 green:43/255.0 blue:15/255.0 alpha:1];
//    [_colors addObject:color];
//    color = [UIColor colorWithRed:71/255.0 green:69/255.0 blue:70/255.0 alpha:1];
//    [_colors addObject:color];
//    color = [UIColor colorWithRed:0 green:0 blue:0 alpha:1];
//    [_colors addObject:color];
//    color = [UIColor colorWithRed:1 green:1 blue:1 alpha:1];
//    [_colors addObject:color];
}

- (void)pick:(CGPoint)location show:(BOOL)show
{
    CGFloat tPosX = location.x;
    CGFloat cellWidth = CGRectGetWidth(self.bounds)/ (CGFloat) [_colors count];
    if (tPosX < 0) tPosX = 0.0;
    NSUInteger index = (NSUInteger)(tPosX / cellWidth);
    if (index > [_colors count] - 1) index = [_colors count] - 1;
    _pickColor.backgroundColor = [_colors objectAtIndex:index];
    CGFloat tPosY = _pickColorBack.center.y;
    if (tPosX > self.bounds.size.width) tPosX = self.bounds.size.width;
    if (tPosX < 0) tPosX = 0;
    _pickColorBack.center = CGPointMake(tPosX, tPosY);
    _pickColorBack.hidden = !show;
    if (_colorPickDelegate && [_colorPickDelegate respondsToSelector:@selector(colorPick:updateColor:)])
    {
        [_colorPickDelegate colorPick:self updateColor:_pickColor.backgroundColor];
    }
}


- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
    UITouch *touch = [touches anyObject];
	CGPoint location = [touch locationInView:self];
    [self pick:location show:YES];
    [self.colorPickDelegate colorPickDidBegan:self];
}

- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
{
    // 检查point是否改变
    CGPoint cPoint = [[touches anyObject] locationInView:self];
    CGPoint pPoint = [[touches anyObject] previousLocationInView:self];
    if (CGPointEqualToPoint(cPoint, pPoint)) {
        return;
    }
    
    UITouch *touch = [touches anyObject];
	CGPoint location = [touch locationInView:self];
    [self pick:location show:YES];
}

- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event
{
    UITouch *touch = [touches anyObject];
	CGPoint location = [touch locationInView:self];
    [self pick:location show:NO];
    [self.colorPickDelegate colorPickDidEnd:self];

}
@end