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Diffstat (limited to 'iphone/ZBarReaderViewImpl_Simulator.m')
| -rw-r--r-- | iphone/ZBarReaderViewImpl_Simulator.m | 219 |
1 files changed, 219 insertions, 0 deletions
diff --git a/iphone/ZBarReaderViewImpl_Simulator.m b/iphone/ZBarReaderViewImpl_Simulator.m new file mode 100644 index 0000000..328a59e --- /dev/null +++ b/iphone/ZBarReaderViewImpl_Simulator.m @@ -0,0 +1,219 @@ +//------------------------------------------------------------------------ +// Copyright 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/ZBarReaderView.h> +#import <ZBarSDK/ZBarReaderViewController.h> + +#define MODULE ZBarReaderView +#import "debug.h" + +// hack around missing simulator support for AVCapture interfaces + +// protected APIs +@interface ZBarReaderView() +- (void) _initWithImageScanner: (ZBarImageScanner*) _scanner; +- (void) initSubviews; +- (void) setImageSize: (CGSize) size; +- (void) didTrackSymbols: (ZBarSymbolSet*) syms; +@end + +@interface ZBarReaderViewImpl + : ZBarReaderView +{ + ZBarImageScanner *scanner; + UILabel *simLabel; + UIImage *scanImage; + CALayer *previewImage; + BOOL enableCache; +} +@end + +@implementation ZBarReaderViewImpl + +@synthesize scanner, enableCache; + +- (void) _initWithImageScanner: (ZBarImageScanner*) _scanner +{ + [super _initWithImageScanner: _scanner]; + scanner = [_scanner retain]; + + [self initSubviews]; +} + +- (void) initSubviews +{ + simLabel = [UILabel new]; + simLabel.backgroundColor = [UIColor clearColor]; + simLabel.textColor = [UIColor whiteColor]; + simLabel.font = [UIFont boldSystemFontOfSize: 20]; + simLabel.numberOfLines = 4; + simLabel.textAlignment = UITextAlignmentCenter; + simLabel.text = @"Camera Simulation\n\n" + @"Tap and hold with two \"fingers\" to select image"; + simLabel.autoresizingMask = + UIViewAutoresizingFlexibleWidth | + UIViewAutoresizingFlexibleHeight; + [self addSubview: simLabel]; + + preview = [CALayer new]; + [self.layer addSublayer: preview]; + + previewImage = [CALayer new]; + [preview addSublayer: previewImage]; + + [super initSubviews]; +} + +- (void) dealloc +{ + [scanner release]; + scanner = nil; + [simLabel release]; + simLabel = nil; + [previewImage release]; + previewImage = nil; + [super dealloc]; +} + +- (AVCaptureDevice*) device +{ + return(nil); +} + +- (void) setDevice: (AVCaptureDevice*) device +{ + // simulated camera does nothing with this +} + +- (AVCaptureSession*) session +{ + return(nil); +} + +- (void) updateCrop +{ + previewImage.frame = preview.bounds; + CGRect bounds = self.bounds; + simLabel.frame = CGRectInset(bounds, + bounds.size.width * .05, + bounds.size.height * .05); +} + +- (void) start +{ + if(started) + return; + [super start]; + running = YES; + + [self performSelector: @selector(onVideoStart) + withObject: nil + afterDelay: 0.5]; +} + +- (void) stop +{ + if(!started) + return; + [super stop]; + running = NO; + + [self performSelector: @selector(onVideoStop) + withObject: nil + afterDelay: 0.5]; +} + +- (void) scanImage: (UIImage*) image +{ + // strip EXIF info + CGImageRef cgimage = image.CGImage; + image = [[UIImage alloc] + initWithCGImage: cgimage + scale: 1.0 + orientation: UIImageOrientationUp]; + + [self setImageSize: image.size]; + [self layoutIfNeeded]; + + [CATransaction begin]; + [CATransaction setDisableActions: YES]; + previewImage.contentsGravity = kCAGravityResizeAspectFill; + previewImage.transform = CATransform3DMakeRotation(M_PI_2, 0, 0, 1); + previewImage.contents = (id)cgimage; + [CATransaction commit]; + + ZBarImage *zimg = + [[ZBarImage alloc] + initWithCGImage: cgimage]; + + CGSize size = zimg.size; + zimg.crop = CGRectMake(effectiveCrop.origin.x * size.width, + effectiveCrop.origin.y * size.height, + effectiveCrop.size.width * size.width, + effectiveCrop.size.height * size.height); + + int nsyms = [scanner scanImage: zimg]; + zlog(@"scan image: %@ crop=%@ nsyms=%d", + NSStringFromCGSize(size), NSStringFromCGRect(zimg.crop), nsyms); + [zimg release]; + + if(nsyms > 0) { + scanImage = [image retain]; + ZBarSymbolSet *syms = scanner.results; + [self performSelector: @selector(didReadSymbols:) + withObject: syms + afterDelay: .4]; + [self performSelector: @selector(didTrackSymbols:) + withObject: syms + afterDelay: .001]; + } + [image release]; +} + +- (void) didReadSymbols: (ZBarSymbolSet*) syms +{ + [readerDelegate + readerView: self + didReadSymbols: syms + fromImage: scanImage]; + [scanImage release]; + scanImage = nil; +} + +- (void) onVideoStart +{ + if(running && + [readerDelegate respondsToSelector: @selector(readerViewDidStart:)]) + [readerDelegate readerViewDidStart: self]; +} + +- (void) onVideoStop +{ + if(!running && + [readerDelegate respondsToSelector: + @selector(readerView:didStopWithError:)]) + [readerDelegate readerView: self + didStopWithError: nil]; +} + +@end |