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//------------------------------------------------------------------------
// 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 <UIKit/UIKit.h>
#import "ZBarReaderController.h"
// orientation set support
#define ZBarOrientationMask(orient) (1 << orient)
#define ZBarOrientationMaskAll \
(ZBarOrientationMask(UIInterfaceOrientationPortrait) | \
ZBarOrientationMask(UIInterfaceOrientationPortraitUpsideDown) | \
ZBarOrientationMask(UIInterfaceOrientationLandscapeLeft) | \
ZBarOrientationMask(UIInterfaceOrientationLandscapeRight))
@class ZBarReaderView, ZBarCameraSimulator;
// drop in video scanning replacement for ZBarReaderController.
// this is a thin controller around a ZBarReaderView that adds the UI
// controls and select functionality offered by ZBarReaderController.
// Automatically falls back to a ZBarReaderController if video APIs
// are unavailable (eg for OS < 4.0)
@interface ZBarReaderViewController : UIViewController {
ZBarImageScanner *scanner;
id<ZBarReaderDelegate> readerDelegate;
ZBarReaderView *readerView;
UIView *cameraOverlayView;
CGAffineTransform cameraViewTransform;
CGRect scanCrop;
NSUInteger supportedOrientationsMask;
UIImagePickerControllerCameraDevice cameraDevice;
UIImagePickerControllerCameraFlashMode cameraFlashMode;
UIImagePickerControllerQualityType videoQuality;
BOOL showsZBarControls, tracksSymbols, enableCache;
ZBarHelpController *helpController;
UIView *controls, *shutter;
BOOL didHideStatusBar, rotating;
ZBarCameraSimulator *cameraSim;
}
// access to configure image scanner
@property (nonatomic, readonly) ZBarImageScanner *scanner;
// barcode result recipient
@property (nonatomic, assign) id<ZBarReaderDelegate> readerDelegate;
// whether to use alternate control set
@property (nonatomic) BOOL showsZBarControls;
// whether to show the green tracking box. note that, even when
// enabled, the box will only be visible when scanning EAN and I2/5.
@property (nonatomic) BOOL tracksSymbols;
// interface orientation support. bit-mask of accepted orientations.
// see eg ZBarOrientationMask() and ZBarOrientationMaskAll
@property (nonatomic) NSUInteger supportedOrientationsMask;
// crop images for scanning. the image will be cropped to this
// rectangle before scanning. the rectangle is normalized to the
// image size and aspect ratio; useful values will place the rectangle
// between 0 and 1 on each axis, where the x-axis corresponds to the
// image major axis. defaults to the full image (0, 0, 1, 1).
@property (nonatomic) CGRect scanCrop;
// provide a custom overlay. note that this can be used with
// showsZBarControls enabled (but not if you want backward compatibility)
@property (nonatomic, retain) UIView *cameraOverlayView;
// transform applied to the preview image.
@property (nonatomic) CGAffineTransform cameraViewTransform;
// display the built-in help browser. the argument will be passed to
// the onZBarHelp() javascript function.
- (void)showHelpWithReason:(NSString *)reason;
// capture the next frame and send it over the usual delegate path.
- (void)takePicture;
// these attempt to emulate UIImagePickerController
+ (BOOL)isCameraDeviceAvailable:
(UIImagePickerControllerCameraDevice)cameraDevice;
+ (BOOL)isFlashAvailableForCameraDevice:
(UIImagePickerControllerCameraDevice)cameraDevice;
+ (NSArray *)availableCaptureModesForCameraDevice:
(UIImagePickerControllerCameraDevice)cameraDevice;
@property (nonatomic) UIImagePickerControllerCameraDevice cameraDevice;
@property (nonatomic) UIImagePickerControllerCameraFlashMode cameraFlashMode;
@property (nonatomic)
UIImagePickerControllerCameraCaptureMode cameraCaptureMode;
@property (nonatomic) UIImagePickerControllerQualityType videoQuality;
// direct access to the ZBarReaderView
@property (nonatomic, readonly) ZBarReaderView *readerView;
// this flag still works, but its use is deprecated
@property (nonatomic) BOOL enableCache;
// these are present only for backward compatibility.
// they will error if inappropriate/unsupported values are set
@property (nonatomic) UIImagePickerControllerSourceType sourceType; // Camera
@property (nonatomic) BOOL allowsEditing; // NO
@property (nonatomic) BOOL allowsImageEditing; // NO
@property (nonatomic) BOOL showsCameraControls; // NO
@property (nonatomic) BOOL showsHelpOnFail; // ignored
@property (nonatomic) ZBarReaderControllerCameraMode cameraMode; // Sampling
@property (nonatomic) BOOL takesPicture; // NO
@property (nonatomic) NSInteger maxScanDimension; // ignored
+ (BOOL)isSourceTypeAvailable:(UIImagePickerControllerSourceType)sourceType;
@end
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