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Diffstat (limited to 'iphone/ZBarHelpController.m')
| -rw-r--r-- | iphone/ZBarHelpController.m | 305 |
1 files changed, 305 insertions, 0 deletions
diff --git a/iphone/ZBarHelpController.m b/iphone/ZBarHelpController.m new file mode 100644 index 0000000..2451843 --- /dev/null +++ b/iphone/ZBarHelpController.m @@ -0,0 +1,305 @@ +//------------------------------------------------------------------------ +// Copyright 2009-2010 (c) Jeff Brown <spadix@users.sourceforge.net> +// +// This file is part of the ZBar Bar Code Reader. +// +// The ZBar Bar Code Reader is free software; you can redistribute it +// and/or modify it under the terms of the GNU Lesser Public License as +// published by the Free Software Foundation; either version 2.1 of +// the License, or (at your option) any later version. +// +// The ZBar Bar Code Reader is distributed in the hope that it will be +// useful, but WITHOUT ANY WARRANTY; without even the implied warranty +// of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser Public License for more details. +// +// You should have received a copy of the GNU Lesser Public License +// along with the ZBar Bar Code Reader; if not, write to the Free +// Software Foundation, Inc., 51 Franklin St, Fifth Floor, +// Boston, MA 02110-1301 USA +// +// http://sourceforge.net/projects/zbar +//------------------------------------------------------------------------ + +#import <ZBarSDK/ZBarHelpController.h> + +#define MODULE ZBarHelpController +#import "debug.h" + +@implementation ZBarHelpController + +@synthesize delegate; + +- (id) initWithReason: (NSString*) _reason +{ + self = [super init]; + if(!self) + return(nil); + + if(!_reason) + _reason = @"INFO"; + reason = [_reason retain]; + return(self); +} + +- (id) init +{ + return([self initWithReason: nil]); +} + +- (void) cleanup +{ + [toolbar release]; + toolbar = nil; + [webView release]; + webView = nil; + [doneBtn release]; + doneBtn = nil; + [backBtn release]; + backBtn = nil; + [space release]; + space = nil; +} + +- (void) dealloc +{ + [self cleanup]; + [reason release]; + reason = nil; + [linkURL release]; + linkURL = nil; + [super dealloc]; +} + +- (void) viewDidLoad +{ + [super viewDidLoad]; + + UIView *view = self.view; + CGRect bounds = self.view.bounds; + if(!bounds.size.width || !bounds.size.height) + view.frame = bounds = CGRectMake(0, 0, 320, 480); + view.backgroundColor = [UIColor colorWithWhite: .125f + alpha: 1]; + view.autoresizingMask = (UIViewAutoresizingFlexibleWidth | + UIViewAutoresizingFlexibleHeight); + + webView = [[WKWebView alloc] + initWithFrame: CGRectMake(0, 0, + bounds.size.width, + bounds.size.height - 44)]; + webView.navigationDelegate = self; + webView.backgroundColor = [UIColor colorWithWhite: .125f + alpha: 1]; + webView.autoresizingMask = (UIViewAutoresizingFlexibleWidth | + UIViewAutoresizingFlexibleHeight | + UIViewAutoresizingFlexibleBottomMargin); + webView.hidden = YES; + [view addSubview: webView]; + + CGRect r = view.bounds; + r.origin.y = r.size.height - 44; + r.size.height = 44; + controls = [[UIView alloc] + initWithFrame: r]; + controls.autoresizingMask = + UIViewAutoresizingFlexibleWidth | + UIViewAutoresizingFlexibleHeight | + UIViewAutoresizingFlexibleTopMargin; + controls.backgroundColor = [UIColor blackColor]; + + r.origin.y = 0; + toolbar = [[UIToolbar alloc] + initWithFrame: r]; + toolbar.barStyle = UIBarStyleBlackOpaque; + toolbar.autoresizingMask = (UIViewAutoresizingFlexibleWidth | + UIViewAutoresizingFlexibleHeight); + + doneBtn = [[UIBarButtonItem alloc] + initWithBarButtonSystemItem: UIBarButtonSystemItemDone + target: self + action: @selector(dismiss)]; + + backBtn = [[UIBarButtonItem alloc] + initWithImage: [UIImage imageNamed: @"zbar-back.png"] + style: UIBarButtonItemStylePlain + target: webView + action: @selector(goBack)]; + + space = [[UIBarButtonItem alloc] + initWithBarButtonSystemItem: + UIBarButtonSystemItemFlexibleSpace + target: nil + action: nil]; + + toolbar.items = [NSArray arrayWithObjects: space, doneBtn, nil]; + + [controls addSubview: toolbar]; + toolbar.autoresizingMask = + UIViewAutoresizingFlexibleWidth | + UIViewAutoresizingFlexibleHeight; + [toolbar release]; + + [view addSubview: controls]; + + if (@available(iOS 11, *)) { + UILayoutGuide *safe = self.view.safeAreaLayoutGuide; + controls.translatesAutoresizingMaskIntoConstraints = NO; + webView.translatesAutoresizingMaskIntoConstraints = NO; + + [NSLayoutConstraint activateConstraints:@[ + [safe.trailingAnchor constraintEqualToAnchor:webView.trailingAnchor], + [webView.leadingAnchor constraintEqualToAnchor:safe.leadingAnchor], + [webView.topAnchor constraintEqualToAnchor:safe.topAnchor], + [webView.bottomAnchor constraintEqualToAnchor:controls.topAnchor] + ]]; + + [NSLayoutConstraint activateConstraints:@[ + [safe.trailingAnchor constraintEqualToAnchor:controls.trailingAnchor], + [controls.leadingAnchor constraintEqualToAnchor:safe.leadingAnchor], + [controls.bottomAnchor constraintEqualToAnchor:safe.bottomAnchor] + ]]; + + [NSLayoutConstraint + constraintWithItem:controls + attribute:NSLayoutAttributeHeight + relatedBy:NSLayoutRelationEqual + toItem:nil + attribute:NSLayoutAttributeHeight + multiplier:1.0 + constant:44.0].active = YES; + } + + NSString *path = [[NSBundle mainBundle] + pathForResource: @"zbar-help" + ofType: @"html"]; + + NSURLRequest *req = nil; + if(path) { + NSURL *url = [NSURL fileURLWithPath: path + isDirectory: NO]; + if(url) + req = [NSURLRequest requestWithURL: url]; + } + if(req) + [webView loadRequest: req]; + else + NSLog(@"ERROR: unable to load zbar-help.html from bundle"); +} + +- (void) viewWillAppear: (BOOL) animated +{ + assert(webView); + if(webView.loading) + webView.hidden = YES; + [super viewWillAppear: animated]; +} + +- (void) viewWillDisappear: (BOOL) animated +{ + [webView stopLoading]; + [super viewWillDisappear: animated]; +} + +- (BOOL) shouldAutorotateToInterfaceOrientation: (UIInterfaceOrientation) orient +{ + return([self isInterfaceOrientationSupported: orient]); +} + +- (void) willAnimateRotationToInterfaceOrientation: (UIInterfaceOrientation) orient + duration: (NSTimeInterval) duration +{ + [webView reload]; +} + +- (void) didRotateFromInterfaceOrientation: (UIInterfaceOrientation) orient +{ + zlog(@"frame=%@ webView.frame=%@ toolbar.frame=%@", + NSStringFromCGRect(self.view.frame), + NSStringFromCGRect(webView.frame), + NSStringFromCGRect(toolbar.frame)); +} + +- (BOOL) isInterfaceOrientationSupported: (UIInterfaceOrientation) orient +{ + UIViewController *parent = self.parentViewController; + if(parent && !orientations) + return([parent shouldAutorotateToInterfaceOrientation: orient]); + return((orientations >> orient) & 1); +} + +- (void) setInterfaceOrientation: (UIInterfaceOrientation) orient + supported: (BOOL) supported +{ + NSUInteger mask = 1 << orient; + if(supported) + orientations |= mask; + else + orientations &= ~mask; +} + +- (void) dismiss +{ + if([delegate respondsToSelector: @selector(helpControllerDidFinish:)]) + [delegate helpControllerDidFinish: self]; + + [self dismissViewControllerAnimated:YES completion:nil]; +} + +- (void)webView:(WKWebView *)view + didFinishNavigation:(WKNavigation *)navigation +{ + if(view.hidden) { + [view evaluateJavaScript:[NSString stringWithFormat: @"onZBarHelp({reason:\"%@\"});", reason] + completionHandler:^(id abc, NSError *error){ + [UIView beginAnimations: @"ZBarHelp" + context: nil]; + view.hidden = NO; + [UIView commitAnimations]; + }]; + + } + + BOOL canGoBack = [view canGoBack]; + NSArray *items = toolbar.items; + if(canGoBack != ([items objectAtIndex: 0] == backBtn)) { + if(canGoBack) + items = [NSArray arrayWithObjects: backBtn, space, doneBtn, nil]; + else + items = [NSArray arrayWithObjects: space, doneBtn, nil]; + [toolbar setItems: items + animated: YES]; + } +} + +- (BOOL) webView: (WKWebView*) view + shouldStartLoadWithRequest: (NSURLRequest*) req + navigationType: (WKNavigationType) nav +{ + NSURL *url = [req URL]; + if([url isFileURL]) + return(YES); + + linkURL = [url retain]; + UIAlertView *alert = + [[UIAlertView alloc] + initWithTitle: @"Open External Link" + message: @"Close this application and open link in Safari?" + delegate: nil + cancelButtonTitle: @"Cancel" + otherButtonTitles: @"OK", nil]; + alert.delegate = self; + [alert show]; + [alert release]; + return(NO); +} + +- (void) alertView: (UIAlertView*) view + clickedButtonAtIndex: (NSInteger) idx +{ + if(idx) + [[UIApplication sharedApplication] + openURL: linkURL]; +} + +@end |