kmpdfkit_demo/PDFViewer/Source/PDFFreehand/PDFFreehandView.m

//
//  PDFFreehandView.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 "PDFFreehandView.h"
#import <ComPDFKit/ComPDFKit.h>
#import "PDFFreehandViewController.h"

@interface PDFFreehandView ()

@property (nonatomic,retain) UIView *colorView;

@end

@implementation PDFFreehandView

#pragma mark - Super Method

- (instancetype)initWithFrame:(CGRect)frame {
    if (self = [super initWithFrame:frame]) {
        self.backgroundColor = [UIColor colorWithRed:255.0/255.0 green:255.0/255.0  blue:255.0/255.0  alpha:1.0];
        self.layer.borderColor = [UIColor colorWithRed:170.0/255.0 green:170.0/255.0  blue:170.0/255.0  alpha:1.0].CGColor;
        self.layer.borderWidth = 1.0;
        self.layer.cornerRadius = 5.0;
        
        CGFloat width = frame.size.width/6;
        CGFloat height = frame.size.height;
        
        UIButton *undoButton = [UIButton buttonWithType:UIButtonTypeCustom];
        undoButton.tag = 0;
        undoButton.frame = CGRectMake(0, 0, width, height);
        [undoButton setImage:[UIImage imageNamed:@"btn_undo.png"] forState:UIControlStateNormal];
        [undoButton addTarget:self action:@selector(buttonItemClicked_Switch:) forControlEvents:UIControlEventTouchUpInside];
        [self addSubview:undoButton];
        
        UIButton *redoButton = [UIButton buttonWithType:UIButtonTypeCustom];
        redoButton.tag = 1;
        redoButton.frame = CGRectMake(width, 0, width, height);
        [redoButton setImage:[UIImage imageNamed:@"btn_redo.png"] forState:UIControlStateNormal];
        [redoButton addTarget:self action:@selector(buttonItemClicked_Switch:) forControlEvents:UIControlEventTouchUpInside];
        [self addSubview:redoButton];
        
        UIButton *eraseButton = [UIButton buttonWithType:UIButtonTypeCustom];
        eraseButton.tag = 2;
        eraseButton.frame = CGRectMake(2*width, 0, width, height);
        [eraseButton setImage:[UIImage imageNamed:@"btn_eraser_00.png"] forState:UIControlStateNormal];
        [eraseButton setImage:[UIImage imageNamed:@"btn_eraser_01.png"] forState:UIControlStateSelected];
        [eraseButton addTarget:self action:@selector(buttonItemClicked_Switch:) forControlEvents:UIControlEventTouchUpInside];
        [self addSubview:eraseButton];
        
        UIButton *propertyButton = [UIButton buttonWithType:UIButtonTypeCustom];
        propertyButton.tag = 3;
        propertyButton.frame = CGRectMake(3*width, 0, width, height);
        [propertyButton setImage:[UIImage imageNamed:@"btn_brush_a00.png"] forState:UIControlStateNormal];
        [propertyButton addTarget:self action:@selector(buttonItemClicked_Switch:) forControlEvents:UIControlEventTouchUpInside];
        [self addSubview:propertyButton];
        
        _colorView = [[UIView alloc] initWithFrame:CGRectMake((width-8)/2.0, 6, 8, 8)];
        _colorView.layer.cornerRadius = _colorView.bounds.size.width/2.0;
        _colorView.backgroundColor = CPDFKitShareConfig.freehandAnnotationColor;
        [propertyButton addSubview:_colorView];
        
        UIButton *clearButton = [UIButton buttonWithType:UIButtonTypeSystem];
        clearButton.tag = 4;
        clearButton.frame = CGRectMake(4*width, 0, width, height);
        [clearButton setTitle:NSLocalizedString(@"Clear", nil) forState:UIControlStateNormal];
        [clearButton setTitleColor:[UIColor colorWithRed:243.0/255.0 green:0 blue:8.0/255.0 alpha:1.0] forState:UIControlStateNormal];
        clearButton.titleLabel.font = [UIFont systemFontOfSize:15.0];
        [clearButton addTarget:self action:@selector(buttonItemClicked_Switch:) forControlEvents:UIControlEventTouchUpInside];
        [self addSubview:clearButton];
        
        UIButton *saveButton = [UIButton buttonWithType:UIButtonTypeSystem];
        saveButton.tag = 5;
        saveButton.frame = CGRectMake(5*width, 0, width, height);
        [saveButton setTitle:NSLocalizedString(@"Done", nil) forState:UIControlStateNormal];
        [saveButton setTitleColor:[UIColor colorWithRed:41.0/255.0 green:111.0/255.0 blue:173.0/255.0 alpha:1.0] forState:UIControlStateNormal];
        saveButton.titleLabel.font = [UIFont systemFontOfSize:15.0];
        [saveButton addTarget:self action:@selector(buttonItemClicked_Switch:) forControlEvents:UIControlEventTouchUpInside];
        [self addSubview:saveButton];
    }
    return self;
}

- (void)dealloc {
    Block_release(_callback);
    [_colorView release];
    [super dealloc];
}

#pragma mark - Button Actions
- (void)buttonItemClicked_Switch:(UIButton *)button {
    if (button.tag == 3) {
        __block PDFFreehandViewController *vc = [[PDFFreehandViewController alloc] init];
        vc.color = CPDFKitShareConfig.freehandAnnotationColor;
        vc.opacity = CPDFKitShareConfig.freehandAnnotationOpacity;
        vc.borderWidth = CPDFKitShareConfig.freehandAnnotationBorderWidth;
        vc.callback = ^{
            if (self.callback) {
                self.callback(button.tag, button.isSelected);
            }
            self.colorView.backgroundColor = vc.color;
            CPDFKitShareConfig.freehandAnnotationColor = vc.color;
            CPDFKitShareConfig.freehandAnnotationOpacity = vc.opacity;
            CPDFKitShareConfig.freehandAnnotationBorderWidth = vc.borderWidth;
        };
        UIViewController *viewController = [UIApplication sharedApplication].keyWindow.rootViewController;
        CGRect rect = [button.superview convertRect:button.frame toView:viewController.view];
        [vc showViewController:viewController inRect:rect];
        [vc release];
    } else {
        if (button.tag == 2) {
            button.selected = !button.isSelected;
            if (button.isSelected) {
                button.backgroundColor = [UIColor lightGrayColor];
            } else {
                button.backgroundColor = [UIColor clearColor];
            }
        }
        if (self.callback) {
            self.callback(button.tag, button.isSelected);
        }
    }
}

@end