Signature support

ILPDFKit.podspec

@@ -10,6 +10,7 @@ Pod::Spec.new do |spec|
   spec.source           =  { :git => "https://github.com/derekblair/ILPDFKit.git", :tag => "1.2.5" }
   spec.requires_arc = true
   spec.source_files = "ILPDFKit/**/*.{h,m,swift}"
+  spec.resources = "ILPDFKit/**/*.{xib}"
   spec.frameworks = "QuartzCore","UIKit"
   spec.public_header_files = "ILPDFKit/**/*.h"
 end

ILPDFKit/Controller/ILPDFSignatureController.h

@@ -0,0 +1,23 @@
+//
+//  ILPDFSignatureController.h
+//  Pods
+//
+//  Created by Yuriy on 28/08/16.
+//
+//
+
+#import <UIKit/UIKit.h>
+@protocol ILPDFSignatureControllerDelegate;
+
+@interface ILPDFSignatureController : UIViewController
+
+@property (nonatomic, weak)   IBOutlet id <ILPDFSignatureControllerDelegate> delegate;
+@property (assign) CGSize expectedSignSize;
+@end
+
+@protocol ILPDFSignatureControllerDelegate <NSObject>
+@optional
+
+- (void) signedWithImage:(UIImage*) signatureImage;
+
+@end

ILPDFKit/Controller/ILPDFSignatureController.m

@@ -0,0 +1,56 @@
+//
+//  ILPDFSignatureController.m
+//  Pods
+//
+//  Created by Yuriy on 28/08/16.
+//
+//
+
+#import "ILPDFSignatureController.h"
+#import "ILPDFSignatureEditingView.h"
+
+@interface ILPDFSignatureController ()
+@property (strong, nonatomic) IBOutlet ILPDFSignatureEditingView *signatureView;
+
+@end
+
+@implementation ILPDFSignatureController
+
+- (void)viewDidLoad {
+    [super viewDidLoad];
+    self.view.backgroundColor = [UIColor clearColor];
+    // Do any additional setup after loading the view.
+}
+
+- (void)didReceiveMemoryWarning {
+    [super didReceiveMemoryWarning];
+    // Dispose of any resources that can be recreated.
+}
+
+#pragma mark - Actions
+
+- (IBAction)clearAction:(UIButton *)sender {
+
+    [self.signatureView clearSignature];
+
+}
+
+- (IBAction)signatureAction:(UIButton *)sender {
+
+    [self.delegate signedWithImage:[self.signatureView createImageFromSignWithMaxWidth:self.expectedSignSize.width andMaxHeight:self.expectedSignSize.height]];
+    [self dismissViewControllerAnimated:YES completion:nil];
+
+}
+
+
+/*
+#pragma mark - Navigation
+
+// In a storyboard-based application, you will often want to do a little preparation before navigation
+- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
+    // Get the new view controller using [segue destinationViewController].
+    // Pass the selected object to the new view controller.
+}
+*/
+
+@end

ILPDFKit/Controller/ILPDFSignatureController.xib

@@ -0,0 +1,74 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="3.0" toolsVersion="15400" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" colorMatched="YES">
+    <device id="retina6_1" orientation="portrait" appearance="light"/>
+    <dependencies>
+        <deployment identifier="iOS"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="15404"/>
+        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
+    </dependencies>
+    <objects>
+        <placeholder placeholderIdentifier="IBFilesOwner" id="-1" userLabel="File's Owner" customClass="ILPDFSignatureController">
+            <connections>
+                <outlet property="signatureView" destination="ifL-qI-elk" id="olh-tz-2y5"/>
+                <outlet property="view" destination="sMn-ih-wEb" id="Rxh-pY-VWW"/>
+            </connections>
+        </placeholder>
+        <placeholder placeholderIdentifier="IBFirstResponder" id="-2" customClass="UIResponder"/>
+        <viewController restorationIdentifier="ILPDFSignatureController" title="ILPDFSignatureController" nibName="ILPDFSignatureController" modalTransitionStyle="crossDissolve" id="5dG-ot-1aR">
+            <point key="canvasLocation" x="34" y="99"/>
+        </viewController>
+        <view contentMode="scaleToFill" id="sMn-ih-wEb">
+            <rect key="frame" x="0.0" y="0.0" width="414" height="896"/>
+            <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+            <subviews>
+                <view alpha="0.40000000000000002" contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="0de-6u-pv3">
+                    <rect key="frame" x="0.0" y="0.0" width="414" height="896"/>
+                    <color key="backgroundColor" red="0.66666668653488159" green="0.66666668653488159" blue="0.66666668653488159" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
+                </view>
+                <view contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="ifL-qI-elk" customClass="ILPDFSignatureEditingView">
+                    <rect key="frame" x="12" y="373" width="390" height="150"/>
+                    <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
+                    <constraints>
+                        <constraint firstAttribute="width" secondItem="ifL-qI-elk" secondAttribute="height" multiplier="231:89" id="b6x-Js-IHH"/>
+                    </constraints>
+                </view>
+                <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="Kvi-0W-CM7">
+                    <rect key="frame" x="12" y="535" width="195" height="30"/>
+                    <constraints>
+                        <constraint firstAttribute="height" constant="30" id="qyX-Ot-A9J"/>
+                    </constraints>
+                    <fontDescription key="fontDescription" type="system" weight="medium" pointSize="15"/>
+                    <state key="normal" title="Clear"/>
+                    <connections>
+                        <action selector="clearAction:" destination="-1" eventType="touchUpInside" id="Jow-OS-0C7"/>
+                    </connections>
+                </button>
+                <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="h03-4f-Yzb">
+                    <rect key="frame" x="207" y="535" width="195" height="30"/>
+                    <fontDescription key="fontDescription" type="system" weight="medium" pointSize="15"/>
+                    <state key="normal" title="Sign"/>
+                    <connections>
+                        <action selector="signatureAction:" destination="-1" eventType="touchUpInside" id="93m-HN-cy1"/>
+                    </connections>
+                </button>
+            </subviews>
+            <color key="backgroundColor" red="0.0" green="0.0" blue="0.0" alpha="0.0" colorSpace="custom" customColorSpace="sRGB"/>
+            <constraints>
+                <constraint firstAttribute="trailing" secondItem="0de-6u-pv3" secondAttribute="trailing" id="25q-DG-kmJ"/>
+                <constraint firstItem="ifL-qI-elk" firstAttribute="centerY" secondItem="sMn-ih-wEb" secondAttribute="centerY" id="55W-Hd-zSL"/>
+                <constraint firstAttribute="bottom" secondItem="0de-6u-pv3" secondAttribute="bottom" id="Dqw-a3-e9b"/>
+                <constraint firstItem="ifL-qI-elk" firstAttribute="leading" secondItem="sMn-ih-wEb" secondAttribute="leading" constant="12" id="IhV-IQ-XGP"/>
+                <constraint firstItem="Kvi-0W-CM7" firstAttribute="leading" secondItem="ifL-qI-elk" secondAttribute="leading" id="NMJ-iq-TfC"/>
+                <constraint firstItem="h03-4f-Yzb" firstAttribute="width" secondItem="Kvi-0W-CM7" secondAttribute="width" id="Qx5-pg-lzc"/>
+                <constraint firstItem="h03-4f-Yzb" firstAttribute="leading" secondItem="Kvi-0W-CM7" secondAttribute="trailing" id="SOv-Gn-1qJ"/>
+                <constraint firstItem="0de-6u-pv3" firstAttribute="leading" secondItem="sMn-ih-wEb" secondAttribute="leading" id="Yi3-5c-DeP"/>
+                <constraint firstItem="h03-4f-Yzb" firstAttribute="trailing" secondItem="ifL-qI-elk" secondAttribute="trailing" id="Zjd-61-z0p"/>
+                <constraint firstItem="0de-6u-pv3" firstAttribute="top" secondItem="sMn-ih-wEb" secondAttribute="top" id="fOp-sc-LHd"/>
+                <constraint firstItem="h03-4f-Yzb" firstAttribute="centerY" secondItem="Kvi-0W-CM7" secondAttribute="centerY" id="gji-ZF-hyx"/>
+                <constraint firstItem="Kvi-0W-CM7" firstAttribute="top" secondItem="ifL-qI-elk" secondAttribute="bottom" constant="12" id="kWy-gM-9fz"/>
+                <constraint firstItem="ifL-qI-elk" firstAttribute="centerX" secondItem="sMn-ih-wEb" secondAttribute="centerX" id="pHf-FB-bua"/>
+            </constraints>
+            <point key="canvasLocation" x="-274" y="-546"/>
+        </view>
+    </objects>
+</document>

ILPDFKit/Controller/ILPDFViewController.h

@@ -30,7 +30,7 @@
 
 @class ILPDFView;
 @class ILPDFDocument;
-
+@class ILPDFSignatureControllerDelegate;
 
 NS_ASSUME_NONNULL_BEGIN
 

ILPDFKit/Controller/ILPDFViewController.m

@@ -22,30 +22,63 @@
 
 
 #import "ILPDFFormContainer.h"
+#import "ILPDFSignatureController.h"
+#import "ILPDFFormSignatureField.h"
 #import "ILPDFViewController.h"
 #import "ILPDFDocument.h"
 #import "ILPDFView.h"
 
-@interface ILPDFViewController(Private)
+@interface ILPDFViewController(Private) <ILPDFSignatureControllerDelegate>
 - (void)loadPDFView;
 @property (nonatomic, strong) ILPDFView *pdfView;
 @end
 
 
-@implementation ILPDFViewController
+@implementation ILPDFViewController {
+    ILPDFView *_pdfView;
+    ILPDFSignatureController *signatureController;
+    ILPDFFormSignatureField *signatureField;
+}
+
 #pragma mark - UIViewController
 
+- (void) viewDidLoad {
+
+    [super viewDidLoad];
+    self.edgesForExtendedLayout = UIRectEdgeNone;
+    self.view.backgroundColor = [UIColor whiteColor];
+}
+
+- (void) viewWillAppear:(BOOL)animated {
+
+    [super viewWillAppear:animated];
+    [[NSNotificationCenter defaultCenter] addObserver:self
+                                             selector:@selector(showSignatureViewController:)
+                                                 name:@"SignatureNotification"
+                                               object:nil];
+
+
+}
+
+- (void)viewDidLayoutSubviews {
+    [super viewDidLayoutSubviews];
+    // Alter or remove to define your own layout logic for the ILPDFView.
+    _pdfView.frame = CGRectMake(0,self.topLayoutGuide.length,self.view.bounds.size.width,self.view.bounds.size.height-self.topLayoutGuide.length - self.bottomLayoutGuide.length);
+}
+
 - (void)viewWillTransitionToSize:(CGSize)size withTransitionCoordinator:(id <UIViewControllerTransitionCoordinator>)coordinator {
     [super viewWillTransitionToSize:size withTransitionCoordinator:coordinator];
     if ([UIApplication sharedApplication].applicationState == UIApplicationStateActive) {
         [self loadPDFView];
     }
 }
 
-- (void)viewDidLoad {
-    [super viewDidLoad];
-    self.edgesForExtendedLayout = UIRectEdgeNone;
-    self.view.backgroundColor = [UIColor whiteColor];
+- (void) viewWillDisappear:(BOOL)animated
+{
+
+    [super viewWillDisappear:animated];
+    [[NSNotificationCenter defaultCenter] removeObserver:self];
+
 }
 
 #pragma mark - ILPDFViewController
@@ -84,6 +117,35 @@ - (void)loadPDFView {
     [self applyConstraintsToPDFView];
 }
 
+#pragma mark - KVO
+
+- (void) showSignatureViewController:(NSNotification *) notification {
+
+    if ([notification.object isKindOfClass:[ILPDFFormSignatureField class]]) {
+        signatureField = notification.object;
+    }
+    NSBundle *bundle = [NSBundle bundleForClass:ILPDFSignatureController.classForCoder];
+
+    signatureController = [[ILPDFSignatureController alloc] initWithNibName:@"ILPDFSignatureController" bundle:bundle];
+    signatureController.expectedSignSize = signatureField.frame.size;
+    signatureController.modalPresentationStyle = UIModalPresentationOverCurrentContext;
+    signatureController.modalTransitionStyle = UIModalTransitionStyleCrossDissolve;
+    signatureController.delegate = self;
+    [self presentViewController:signatureController animated:YES completion:nil];
+
+}
+
+#pragma mark - Signature Controller Delegate
+
+- (void) signedWithImage:(UIImage*) signatureImage {
+
+    [signatureField removeButtonTitle];
+    signatureField.signatureImage.image = signatureImage;
+    [signatureField informDelegateAboutNewImage];
+    signatureField = nil;
+
+}
+
 
 
 @end

ILPDFKit/ILPDFKit.h

@@ -0,0 +1,58 @@
+//
+//  ILPDFKit.h
+//  ILPDFKit
+//
+//  Created by Derek Blair on 2016-03-19.
+//  Copyright © 2016 Derek Blair. All rights reserved.
+//
+
+#import <UIKit/UIKit.h>
+
+//! Project version number for ILPDFKit.
+FOUNDATION_EXPORT double ILPDFKitVersionNumber;
+
+//! Project version string for ILPDFKit.
+FOUNDATION_EXPORT const unsigned char ILPDFKitVersionString[];
+
+// In this header, you should import all the public headers of your framework using statements like #import <ILPDFKit/PublicHeader.h>
+
+
+#import <ILPDFKit/ILPDFDictionary.h>
+#import <ILPDFKit/ILPDFArray.h>
+#import <ILPDFKit/ILPDFStream.h>
+#import <ILPDFKit/ILPDFString.h>
+#import <ILPDFKit/ILPDFName.h>
+#import <ILPDFKit/ILPDFNumber.h>
+#import <ILPDFKit/ILPDFNull.h>
+
+#import <ILPDFKit/ILPDFForm.h>
+#import <ILPDFKit/ILPDFPage.h>
+#import <ILPDFKit/ILPDFDocument.h>
+#import <ILPDFKit/ILPDFView.h>
+#import <ILPDFKit/ILPDFWidgetAnnotationView.h>
+#import <ILPDFKit/ILPDFViewController.h>
+#import <ILPDFKit/ILPDFUtility.h>
+
+
+#import <QuartzCore/QuartzCore.h>
+#import <Foundation/Foundation.h>
+#import <UIKit/UIKit.h>
+
+// This is the color for all pdf forms.
+#define ILPDFWidgetColor [UIColor colorWithRed:0.7 green:0.85 blue:1.0 alpha:0.7]
+
+// PDF uses ASCII for readable characters, but allows any 8 bit value unlike ASCII, so we use an extended ASCII set here.
+// The character mapped to encoded bytes over 127 have no significance, and are octal escaped if needed to be read as text in the PDF file itself.
+#define ILPDFStringCharacterEncoding NSISOLatin1StringEncoding
+
+// Character macros
+#define isWS(c) ((c) == 0 || (c) == 9 || (c) == 10 || (c) == 12 || (c) == 13 || (c) == 32)
+#define isDelim(c) ((c) == '(' || (c) == ')' || (c) == '<' || (c) == '>' || (c) == '[' || (c) == ']' || (c) == '{' || (c) == '}' || (c) == '/' ||  (c) == '%')
+#define isODelim(c) ((c) == '(' ||  (c) == '<' ||  (c) == '[')
+#define isCDelim(c) ((c) == ')' ||  (c) == '>' ||  (c) == ']')
+
+#define ILPDFFormMinFontSize 8
+#define ILPDFFormMaxFontSize 22
+
+
+

ILPDFKit/Model/ILPDFDocument.h

@@ -142,6 +142,9 @@ NS_ASSUME_NONNULL_BEGIN
  */
 - (NSString *)formXML;
 
+// @return A string containing an json representation of the forms of the document and their values. Used for submitting the form.
+- (NSString *)formJSON;
+
 @end
 
 NS_ASSUME_NONNULL_END

ILPDFKit/Model/ILPDFDocument.m

@@ -165,6 +165,17 @@ - (NSString *)formXML {
     return [self.forms formXML];
 }
 
+- (NSString *)formJSON {
+    NSArray <ILPDFForm*>*forms = [self.forms allForms];
+    NSMutableDictionary *formValues = [NSMutableDictionary new];
+    for (ILPDFForm *form in forms) {
+        formValues[form.name] = form.value ? form.value : @"";
+    }
+    NSError *err;
+    NSData *jsonData = [NSJSONSerialization dataWithJSONObject:formValues options:NSJSONWritingPrettyPrinted error:&err];
+    return [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];
+}
+
 - (NSData *)savedStaticPDFData {
     NSUInteger numberOfPages = [self numberOfPages];
     NSMutableData *pageData = [NSMutableData data];