moved Classes out of the demo application
This commit is contained in:
Jeena Paradies
parent
a5e6bcc8b3
commit
c4b4108b8b
37 changed files with 409 additions and 3181 deletions
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//
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// JPImagePickerController.h
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// JPImagePickerController
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//
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// Created by Jeena on 11.11.09.
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// Copyright 2009 Jeena Paradies.
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// Licence: MIT-Licence
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//
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#import <UIKit/UIKit.h>
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#import "JPImagePickerOverviewController.h"
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@class JPImagePickerController, JPImagePickerOverviewController;
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/*!
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@enum JPImagePickerControllerThumbnailSize
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@abstract Specifies the thumbnail width and height.
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@constant kJPImagePickerControllerThumbnailSizeWidth Thumbnail width 75 px.
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@constant kJPImagePickerControllerThumbnailSizeHeight Thumbnail height 75 px.
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*/
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enum JPImagePickerControllerThumbnailSize {
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kJPImagePickerControllerThumbnailSizeWidth = 75,
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kJPImagePickerControllerThumbnailSizeHeight = 75
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};
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/*!
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@enum JPImagePickerControllerPreviewImageSize
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@abstract Specifies the preview image width and height.
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@constant kJPImagePickerControllerPreviewImageSizeWidth Preview image width 320 px.
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@constant kJPImagePickerControllerPreviewImageSizeHeight Preview image height 420 px.
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*/
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enum JPImagePickerControllerPreviewImageSize {
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kJPImagePickerControllerPreviewImageSizeWidth = 320,
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kJPImagePickerControllerPreviewImageSizeHeight = 420
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};
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#pragma mark -
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/*!
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@protocol JPImagePickerControllerDelegate
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@abstract Delegate protocol for the JPImagePickerController
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@discussion You have to implement this delegate in order to
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use the JPImagePickerController. This delegate is responsible
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for dismissing the picker on cancel or finished picking.
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*/
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@protocol JPImagePickerControllerDelegate <NSObject>
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@optional
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/*!
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@method imagePickerDidCancel:
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@abstract Called when picker did cancel
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@discussion This method is called when the user canceled picking.
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The delegate is responsible to dismiss the picker here.
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@param picker The picker which called this method.
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*/
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- (void)imagePickerDidCancel:(JPImagePickerController *)picker;
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/*!
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@method imagePicker:didFinishPickingWithImageNumber:
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@abstract Called when the user picked a image.
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@discussion This method is called when the user die finish picking.
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The delegate is responsible to dismiss the picker here.
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@param picker The picker which called this method.
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@param imageNumber The number which image the user picked.
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*/
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- (void)imagePicker:(JPImagePickerController *)picker didFinishPickingWithImageNumber:(NSInteger)imageNumber;
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@end
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/*!
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@protocol JPImagePickerControllerDataSource
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@abstract The data source protocol for JPImagePickerController
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@discussion The JPImagePickerController asks this data source for all
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data which it wants to display.
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*/
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@protocol JPImagePickerControllerDataSource <NSObject>
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@optional
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/*!
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@method numberOfImagesInImagePicker:
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@abstract Should return the number of images.
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@discussion This method should return the number of images which the
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picker should display.
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@param picker The picker which called this method.
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*/
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- (NSInteger)numberOfImagesInImagePicker:(JPImagePickerController *)picker;
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/*!
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@method imagePicker:thumbnailForImageNumber:
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@abstract Asks the data source for a thumbnail to insert in a particular location
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the image picker.
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@discussion This method should return a UIImage thumbnail for a image at the
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image number position. The image should have the width of kJPImagePickerControllerThumbnailWidth
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and height of kJPImagePickerControllerThumbnailWidth. If it is not that size the
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image picker will resize it so it fits.
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@param picker A picker-object requesting the thumbnail.
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@param imageNumber A image number locating the image in the picker.
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*/
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- (UIImage *)imagePicker:(JPImagePickerController *)picker thumbnailForImageNumber:(NSInteger)imageNumber;
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/*!
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@method imagePicker:imageForImageNumber:
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@abstract Asks the data source for a image to show in a preview.
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@discussion This method should return a UIImage image for the preview at
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the image number position. The image should have the width of kJPImagePickerControllerPreviewImageWidth
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and height of kJPImagePickerControllerPreviewImageWidth. If it is not that size the
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image picker will resize it so it fits.
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@param picker A picker-object requesting the image.
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@param imageNumber A image number locating the image in the picker.
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*/
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- (UIImage *)imagePicker:(JPImagePickerController *)picker imageForImageNumber:(NSInteger)imageNumber;
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@end
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#pragma mark -
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/*!
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@class JPImagePickerController
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@abstract A image picker view controller.
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@discussion A class which represents a image picker controller like apples UIImagePickerController
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but lets you use a external dataSource for the images.
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@updated 2009-11-14
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*/
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@interface JPImagePickerController : UIViewController {
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IBOutlet UINavigationController *modalNavigationController;
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JPImagePickerOverviewController *overviewController;
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UIStatusBarStyle originalStatusBarStyle;
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id<JPImagePickerControllerDelegate> delegate;
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id<JPImagePickerControllerDataSource> dataSource;
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NSString *imagePickerTitle;
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}
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/*!
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@property modalNavigationController
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@abstract The additional navigation controller.
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@discussion We need it to be able to view a navigation when the user
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picks a image.
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*/
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@property (nonatomic, retain) IBOutlet UINavigationController *modalNavigationController;
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/*!
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@property overviewController
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@abstract Controller for the scrollView.
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@discussion This controller holds the scrollView with all the buttons which
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represent the images.
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*/
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@property (nonatomic, retain) JPImagePickerOverviewController *overviewController;
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/*!
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@property overviewController
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@abstract Original StatusBarStyle at the beginning.
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@discussion This property saves the UIStatusBarStyle at the beginning, so that
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we'll be able to change it back when we dismiss the image picker.
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*/
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@property (nonatomic, readonly) UIStatusBarStyle originalStatusBarStyle;
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/*!
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@property delegate
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@abstract The image picker's delegate object.
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@discussion The delegate receives notifications when the user picks an image,
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or exits the picker interface. The delegate also decides when to dismiss
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the picker interface, so you must provide a delegate to use a picker.
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If this property is nil, the picker is dismissed immediately if you try
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to show it.
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*/
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@property (nonatomic, retain) id<JPImagePickerControllerDelegate> delegate;
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/*!
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@property dataSource
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@abstract The data source for the picker view.
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@discussion The data source must adopt the JPImagePickerControllerDataSource protocol
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and implement the required methods to return the number of components and the
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number of rows in each component.
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*/
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@property (nonatomic, retain) id<JPImagePickerControllerDataSource> dataSource;
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/*!
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@property imagePickerTitle
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@abstract The image picker title.
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@discussion You can set the title for the image overview here.
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*/
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@property (nonatomic, retain) NSString *imagePickerTitle;
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/*!
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@method cancelPicking:
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@param sender The button which sends the action.
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*/
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- (void)cancelPicking:(id)sender;
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@end
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@ -1,103 +0,0 @@
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//
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// JPImagePickerController.m
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// JPImagePickerController
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//
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// Created by Jeena on 11.11.09.
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// Copyright 2009 Jeena Paradies.
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// Licence: MIT-Licence
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//
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#import "JPImagePickerController.h"
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@implementation JPImagePickerController
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@synthesize overviewController, modalNavigationController, delegate, dataSource, originalStatusBarStyle;
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/*
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// The designated initializer. Override if you create the controller programmatically and want to perform customization that is not appropriate for viewDidLoad.
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- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {
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if (self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil]) {
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// Custom initialization
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}
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return self;
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}
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*/
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// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
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- (void)viewDidLoad {
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[super viewDidLoad];
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originalStatusBarStyle = [UIApplication sharedApplication].statusBarStyle;
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[[UIApplication sharedApplication] setStatusBarStyle:UIStatusBarStyleBlackTranslucent animated:YES];
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overviewController = [[JPImagePickerOverviewController alloc] initWithImagePickerController:self];
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modalNavigationController = [[UINavigationController alloc] initWithRootViewController:overviewController];
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modalNavigationController.view.frame = self.view.bounds;
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modalNavigationController.navigationBar.barStyle = UIBarStyleBlackTranslucent;
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modalNavigationController.navigationBar.translucent = YES;
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[self.view addSubview:modalNavigationController.view];
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}
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- (void)setImagePickerTitle:(NSString *)newTitle {
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imagePickerTitle = newTitle;
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[overviewController setImagePickerTitle:newTitle];
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}
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- (NSString *)imagePickerTitle {
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return imagePickerTitle;
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}
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-(void)viewWillAppear:(BOOL)animated {
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[super viewWillAppear:animated];
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if (delegate == nil) {
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[self.navigationController dismissModalViewControllerAnimated:YES];
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}
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[modalNavigationController viewWillAppear:animated];
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}
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-(void)viewWillDisappear:(BOOL)animated {
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[super viewWillDisappear:animated];
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[modalNavigationController viewWillDisappear:animated];
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}
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-(void)viewDidAppear:(BOOL)animated {
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[super viewDidAppear:animated];
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[modalNavigationController viewDidAppear:animated];
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}
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-(void)viewDidDisappear:(BOOL)animated {
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[super viewDidDisappear:animated];
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[modalNavigationController viewDidDisappear:animated];
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}
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/*
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// Override to allow orientations other than the default portrait orientation.
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- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
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// Return YES for supported orientations
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return (interfaceOrientation == UIInterfaceOrientationPortrait);
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}
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*/
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- (void)cancelPicking:(id)sender {
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[delegate imagePickerDidCancel:self];
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}
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- (void)didReceiveMemoryWarning {
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// Releases the view if it doesn't have a superview.
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[super didReceiveMemoryWarning];
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// Release any cached data, images, etc that aren't in use.
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}
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- (void)viewDidUnload {
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// Release any retained subviews of the main view.
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// e.g. self.myOutlet = nil;
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}
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- (void)dealloc {
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[super dealloc];
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}
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@end
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@ -1,35 +0,0 @@
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//
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// JPImagePickerDetailController.h
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// JPImagePickerController
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//
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// Created by Jeena on 11.11.09.
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// Copyright 2009 Jeena Paradies.
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// Licence: MIT-Licence
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//
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#import <UIKit/UIKit.h>
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#import "JPImagePickerController.h"
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#import "JPImagePickerOverviewController.h"
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#import "UIImageResizing.h"
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@protocol JPImagePickerControllerDelegate;
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@protocol JPImagePickerControllerDataSource;
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@class JPImagePickerOverviewController;
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@interface JPImagePickerDetailController : UIViewController {
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JPImagePickerOverviewController *overviewController;
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IBOutlet UIImageView *previewImageView;
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NSInteger imageNumber;
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UIStatusBarStyle originalStatusBarStyle;
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}
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@property (nonatomic, retain) IBOutlet UIImageView *previewImageView;
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@property (nonatomic, retain, readonly) JPImagePickerOverviewController *overviewController;
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@property (nonatomic) NSInteger imageNumber;
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- (id)initWithOverviewController:(JPImagePickerOverviewController *)newOverviewController;
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- (void)prepareForImageNumber:(NSInteger)newImageNumber;
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- (IBAction)cancelPreview:(id)sender;
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- (IBAction)finishedPicking:(id)sender;
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@end
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@ -1,103 +0,0 @@
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//
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// JPImagePickerDetailController.m
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// JPImagePickerController
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//
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// Created by Jeena on 11.11.09.
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// Copyright 2009 Jeena Paradies.
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// Licence: MIT-Licence
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//
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#import "JPImagePickerDetailController.h"
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@implementation JPImagePickerDetailController
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@synthesize previewImageView, overviewController, imageNumber;
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- (id)initWithOverviewController:(JPImagePickerOverviewController *)newOverviewController {
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if (self = [super initWithNibName:@"JPImagePickerDetailController" bundle:nil]) {
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// Custom initialization
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overviewController = newOverviewController;
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imageNumber = -1;
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}
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return self;
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}
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// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
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- (void)viewDidLoad {
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[super viewDidLoad];
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}
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- (void)viewWillAppear:(BOOL)animated {
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originalStatusBarStyle = [UIApplication sharedApplication].statusBarStyle;
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[[UIApplication sharedApplication] setStatusBarStyle:UIStatusBarStyleBlackOpaque animated:YES];
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[super viewWillAppear:animated];
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[self.navigationController setNavigationBarHidden:YES animated:YES];
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[self prepareForImageNumber:imageNumber];
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}
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/*
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- (void)viewDidAppear:(BOOL)animated {
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[super viewDidAppear:animated];
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}
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*/
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- (void)viewWillDisappear:(BOOL)animated {
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[super viewWillDisappear:animated];
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[self.navigationController setNavigationBarHidden:NO animated:YES];
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}
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/*
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- (void)viewDidDisappear:(BOOL)animated {
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[super viewDidDisappear:animated];
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}
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*/
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/*
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// Override to allow orientations other than the default portrait orientation.
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- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
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// Return YES for supported orientations
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return (interfaceOrientation == UIInterfaceOrientationPortrait);
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}
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*/
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- (void)prepareForImageNumber:(NSInteger)newImageNumber {
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imageNumber = newImageNumber;
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previewImageView.image = [[overviewController.imagePickerController.dataSource
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imagePicker:overviewController.imagePickerController
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imageForImageNumber:imageNumber]
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scaleToSize:CGSizeMake(kJPImagePickerControllerPreviewImageSizeHeight, kJPImagePickerControllerPreviewImageSizeHeight)
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onlyIfNeeded:YES];
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}
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- (IBAction)cancelPreview:(id)sender {
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[[UIApplication sharedApplication] setStatusBarStyle:originalStatusBarStyle animated:YES];
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[self.navigationController popViewControllerAnimated:YES];
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}
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- (IBAction)finishedPicking:(id)sender {
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[[UIApplication sharedApplication] setStatusBarStyle:overviewController.imagePickerController.originalStatusBarStyle animated:YES];
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[overviewController.imagePickerController.delegate imagePicker:overviewController.imagePickerController didFinishPickingWithImageNumber:imageNumber];
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}
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- (void)didReceiveMemoryWarning {
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// Releases the view if it doesn't have a superview.
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[super didReceiveMemoryWarning];
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// Release any cached data, images, etc that aren't in use.
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}
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- (void)viewDidUnload {
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// Release any retained subviews of the main view.
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// e.g. self.myOutlet = nil;
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}
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- (void)dealloc {
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[super dealloc];
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}
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@end
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@ -1,488 +0,0 @@
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@ -1,35 +0,0 @@
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//
|
||||
// JPImagePickerOverviewController.h
|
||||
// JPImagePickerController
|
||||
//
|
||||
// Created by Jeena on 11.11.09.
|
||||
// Copyright 2009 Jeena Paradies.
|
||||
// Licence: MIT-Licence
|
||||
//
|
||||
|
||||
#import <UIKit/UIKit.h>
|
||||
#import "JPImagePickerController.h"
|
||||
#import "JPImagePickerDetailController.h"
|
||||
#import "UIImageResizing.h"
|
||||
|
||||
@class JPImagePickerController, JPImagePickerDetailController;
|
||||
@protocol JPImagePickerControllerDelegate, JPImagePickerControllerDataSource;
|
||||
|
||||
@interface JPImagePickerOverviewController : UIViewController {
|
||||
JPImagePickerController *imagePickerController;
|
||||
JPImagePickerDetailController *detailController;
|
||||
IBOutlet UIScrollView *scrollView;
|
||||
}
|
||||
|
||||
@property (nonatomic, retain, readonly) JPImagePickerController *imagePickerController;
|
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@property (nonatomic, retain) JPImagePickerDetailController *detailController;
|
||||
@property (nonatomic, retain) IBOutlet UIScrollView *scrollView;
|
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|
||||
|
||||
- (id)initWithImagePickerController:(JPImagePickerController *)newImagePickerController;
|
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- (void)setImagePickerTitle:(NSString *)newTitle;
|
||||
- (NSString *)imagePickerTitle;
|
||||
- (IBAction)cancelPicking:(id)sender;
|
||||
- (void)buttonTouched:(UIButton *)sender;
|
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|
||||
@end
|
||||
|
|
@ -1,128 +0,0 @@
|
|||
//
|
||||
// JPImagePickerOverviewController.m
|
||||
// JPImagePickerController
|
||||
//
|
||||
// Created by Jeena on 11.11.09.
|
||||
// Copyright 2009 Jeena Paradies.
|
||||
// Licence: MIT-Licence
|
||||
//
|
||||
|
||||
#import "JPImagePickerOverviewController.h"
|
||||
|
||||
|
||||
@implementation JPImagePickerOverviewController
|
||||
|
||||
@synthesize imagePickerController, detailController, scrollView;
|
||||
|
||||
#define PADDING_TOP 44
|
||||
#define PADDING 4
|
||||
#define THUMBNAIL_COLS 4
|
||||
|
||||
- (id)initWithImagePickerController:(JPImagePickerController *)newImagePickerController {
|
||||
if (self = [super initWithNibName:@"JPImagePickerOverviewController" bundle:nil]) {
|
||||
// Custom initialization
|
||||
imagePickerController = newImagePickerController;
|
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}
|
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return self;
|
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}
|
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|
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|
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// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
|
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- (void)viewDidLoad {
|
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[super viewDidLoad];
|
||||
|
||||
[self setImagePickerTitle:imagePickerController.imagePickerTitle];
|
||||
|
||||
UIBarButtonItem *cancelButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemCancel
|
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target:self
|
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action:@selector(cancelPicking:)];
|
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self.navigationItem.rightBarButtonItem = cancelButton;
|
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[cancelButton release];
|
||||
|
||||
|
||||
UIButton *button;
|
||||
UIImage *thumbnail;
|
||||
int images_count = [imagePickerController.dataSource numberOfImagesInImagePicker:imagePickerController];
|
||||
|
||||
for (int i=0; i<images_count; i++) {
|
||||
thumbnail = [[imagePickerController.dataSource imagePicker:imagePickerController thumbnailForImageNumber:(NSInteger)i]
|
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scaleAndCropToSize:CGSizeMake(kJPImagePickerControllerThumbnailSizeWidth, kJPImagePickerControllerThumbnailSizeHeight)
|
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onlyIfNeeded:NO];
|
||||
|
||||
button = [UIButton buttonWithType:UIButtonTypeCustom];
|
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[button setImage:thumbnail forState:UIControlStateNormal];
|
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button.showsTouchWhenHighlighted = YES;
|
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button.userInteractionEnabled = YES;
|
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[button addTarget:self action:@selector(buttonTouched:) forControlEvents:UIControlEventTouchUpInside];
|
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button.tag = i;
|
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button.frame = CGRectMake(kJPImagePickerControllerThumbnailSizeWidth * (i % THUMBNAIL_COLS) + PADDING * (i % THUMBNAIL_COLS) + PADDING,
|
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kJPImagePickerControllerThumbnailSizeHeight * (i / THUMBNAIL_COLS) + PADDING * (i / THUMBNAIL_COLS) + PADDING + PADDING_TOP,
|
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kJPImagePickerControllerThumbnailSizeWidth,
|
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kJPImagePickerControllerThumbnailSizeHeight);
|
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|
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[scrollView addSubview:button];
|
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}
|
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|
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int rows = images_count / THUMBNAIL_COLS;
|
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if (((float)images_count / THUMBNAIL_COLS) - rows != 0) {
|
||||
rows++;
|
||||
}
|
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int height = kJPImagePickerControllerThumbnailSizeHeight * rows + PADDING * rows + PADDING + PADDING_TOP;
|
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|
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scrollView.contentSize = CGSizeMake(self.view.frame.size.width, height);
|
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scrollView.clipsToBounds = YES;
|
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|
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}
|
||||
|
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- (void)setImagePickerTitle:(NSString *)newTitle {
|
||||
self.navigationItem.title = newTitle;
|
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}
|
||||
|
||||
- (NSString *)imagePickerTitle {
|
||||
return self.navigationItem.title;
|
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}
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/*
|
||||
// Override to allow orientations other than the default portrait orientation.
|
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- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
|
||||
// Return YES for supported orientations
|
||||
return (interfaceOrientation == UIInterfaceOrientationPortrait);
|
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}
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*/
|
||||
|
||||
- (IBAction)cancelPicking:(id)sender {
|
||||
[[UIApplication sharedApplication] setStatusBarStyle:imagePickerController.originalStatusBarStyle animated:YES];
|
||||
[imagePickerController.delegate imagePickerDidCancel:imagePickerController];
|
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}
|
||||
|
||||
|
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- (void)buttonTouched:(UIButton *)sender {
|
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if (detailController == nil) {
|
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detailController = [[JPImagePickerDetailController alloc] initWithOverviewController:self];
|
||||
}
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[detailController prepareForImageNumber:(NSInteger)sender.tag];
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||||
[imagePickerController.modalNavigationController pushViewController:detailController animated:YES];
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}
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|
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- (void)didReceiveMemoryWarning {
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// Releases the view if it doesn't have a superview.
|
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[super didReceiveMemoryWarning];
|
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|
||||
// Release any cached data, images, etc that aren't in use.
|
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}
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|
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- (void)viewDidUnload {
|
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// Release any retained subviews of the main view.
|
||||
// e.g. self.myOutlet = nil;
|
||||
}
|
||||
|
||||
|
||||
- (void)dealloc {
|
||||
[imagePickerController release];
|
||||
[detailController release];
|
||||
[scrollView release];
|
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[super dealloc];
|
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}
|
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|
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|
||||
@end
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@ -1,405 +0,0 @@
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|
|
@ -1,27 +0,0 @@
|
|||
//
|
||||
// UIImageResizing.h
|
||||
// JPImagePickerController
|
||||
//
|
||||
// Created by Jeena on 07.11.09.
|
||||
// Copyright 2009 Jeena Paradies.
|
||||
// Licence: MIT-Licence
|
||||
//
|
||||
// Most of this code is from http://stackoverflow.com/questions/603907/uiimage-resize-then-crop
|
||||
|
||||
#import <Foundation/Foundation.h>
|
||||
|
||||
|
||||
@interface UIImage (Resize)
|
||||
|
||||
+ (UIImage *)image:(UIImage *)sourceImage scaleAndCroppForSize:(CGSize)targetSize;
|
||||
- (UIImage *)scaleAndCropToSize:(CGSize)newSize;
|
||||
- (UIImage *)scaleAndCropToSize:(CGSize)targetSize onlyIfNeeded:(BOOL)onlyIfNeeded;
|
||||
|
||||
+ (UIImage *)image:(UIImage *)image scaleToSize:(CGSize)newSize;
|
||||
- (UIImage *)scaleToSize:(CGSize)newSize;
|
||||
- (UIImage *)scaleToSize:(CGSize)targetSize onlyIfNeeded:(BOOL)onlyIfNeeded;
|
||||
|
||||
+ (BOOL)image:(UIImage *)sourceImage needsToScale:(CGSize)targetSize;
|
||||
- (BOOL)needsToScale:(CGSize)targetSize;
|
||||
|
||||
@end
|
||||
|
|
@ -1,150 +0,0 @@
|
|||
//
|
||||
// UIImageResizing.m
|
||||
// JPImagePickerController
|
||||
//
|
||||
// Created by Jeena on 07.11.09.
|
||||
// Copyright 2009 Jeena Paradies.
|
||||
// Licence: MIT-Licence
|
||||
//
|
||||
|
||||
#import "UIImageResizing.h"
|
||||
|
||||
|
||||
@implementation UIImage (Resizing)
|
||||
|
||||
+ (UIImage *)image:(UIImage *)sourceImage scaleAndCroppForSize:(CGSize)targetSize {
|
||||
|
||||
UIImage *newImage = nil;
|
||||
CGSize imageSize = sourceImage.size;
|
||||
CGFloat width = imageSize.width;
|
||||
CGFloat height = imageSize.height;
|
||||
CGFloat targetWidth = targetSize.width;
|
||||
CGFloat targetHeight = targetSize.height;
|
||||
CGFloat scaleFactor = 0.0;
|
||||
CGFloat scaledWidth = targetWidth;
|
||||
CGFloat scaledHeight = targetHeight;
|
||||
CGPoint thumbnailPoint = CGPointMake(0.0,0.0);
|
||||
|
||||
if (CGSizeEqualToSize(imageSize, targetSize) == NO)
|
||||
{
|
||||
CGFloat widthFactor = targetWidth / width;
|
||||
CGFloat heightFactor = targetHeight / height;
|
||||
|
||||
if (widthFactor >= heightFactor) {
|
||||
scaleFactor = widthFactor; // scale to fit height
|
||||
} else {
|
||||
scaleFactor = heightFactor; // scale to fit width
|
||||
}
|
||||
|
||||
scaledWidth = width * scaleFactor;
|
||||
scaledHeight = height * scaleFactor;
|
||||
|
||||
// center the image
|
||||
if (widthFactor >= heightFactor) {
|
||||
thumbnailPoint.y = (targetHeight - scaledHeight) * 0.5;
|
||||
} else if (widthFactor < heightFactor) {
|
||||
thumbnailPoint.x = (targetWidth - scaledWidth) * 0.5;
|
||||
}
|
||||
}
|
||||
|
||||
UIGraphicsBeginImageContext(targetSize); // this will crop
|
||||
|
||||
CGRect thumbnailRect = CGRectZero;
|
||||
thumbnailRect.origin = thumbnailPoint;
|
||||
thumbnailRect.size.width = scaledWidth;
|
||||
thumbnailRect.size.height = scaledHeight;
|
||||
|
||||
[sourceImage drawInRect:thumbnailRect];
|
||||
|
||||
newImage = UIGraphicsGetImageFromCurrentImageContext();
|
||||
if(newImage == nil)
|
||||
NSLog(@"could not scale image");
|
||||
|
||||
//pop the context to get back to the default
|
||||
UIGraphicsEndImageContext();
|
||||
|
||||
return newImage;
|
||||
}
|
||||
|
||||
- (UIImage *)scaleAndCropToSize:(CGSize)targetSize {
|
||||
return [UIImage image:self scaleAndCroppForSize:(CGSize)targetSize];
|
||||
}
|
||||
|
||||
- (UIImage *)scaleAndCropToSize:(CGSize)targetSize onlyIfNeeded:(BOOL)onlyIfNeeded {
|
||||
|
||||
UIImage *image;
|
||||
|
||||
if (!onlyIfNeeded || [self needsToScale:targetSize]) {
|
||||
image = [self scaleAndCropToSize:targetSize];
|
||||
} else {
|
||||
image = self;
|
||||
}
|
||||
|
||||
return image;
|
||||
}
|
||||
|
||||
+ (UIImage *)image:(UIImage *)sourceImage scaleToSize:(CGSize)targetSize {
|
||||
|
||||
CGFloat scaleFactor = 0.0;
|
||||
CGFloat scaledWidth = targetSize.width;
|
||||
CGFloat scaledHeight = targetSize.height;
|
||||
|
||||
CGFloat widthFactor = targetSize.width / sourceImage.size.width;
|
||||
CGFloat heightFactor = targetSize.height / sourceImage.size.height;
|
||||
|
||||
if (widthFactor < heightFactor) {
|
||||
scaleFactor = widthFactor; // scale to fit height
|
||||
} else {
|
||||
scaleFactor = heightFactor; // scale to fit width
|
||||
}
|
||||
|
||||
scaledWidth = sourceImage.size.width * scaleFactor;
|
||||
scaledHeight = sourceImage.size.height * scaleFactor;
|
||||
|
||||
CGSize propperSize = CGSizeMake(scaledWidth, scaledHeight);
|
||||
|
||||
UIGraphicsBeginImageContext( propperSize );
|
||||
[sourceImage drawInRect:CGRectMake(0, 0, propperSize.width, propperSize.height)];
|
||||
UIImage* newImage = UIGraphicsGetImageFromCurrentImageContext();
|
||||
UIGraphicsEndImageContext();
|
||||
|
||||
return newImage;
|
||||
}
|
||||
|
||||
- (UIImage *)scaleToSize:(CGSize)newSize {
|
||||
return [UIImage image:self scaleToSize:newSize];
|
||||
}
|
||||
|
||||
- (UIImage *)scaleToSize:(CGSize)targetSize onlyIfNeeded:(BOOL)onlyIfNeeded {
|
||||
|
||||
UIImage *image;
|
||||
|
||||
if (!onlyIfNeeded || [self needsToScale:targetSize]) {
|
||||
image = [self scaleToSize:targetSize];
|
||||
} else {
|
||||
image = self;
|
||||
}
|
||||
|
||||
return image;
|
||||
}
|
||||
|
||||
+ (BOOL)image:(UIImage *)sourceImage needsToScale:(CGSize)targetSize {
|
||||
BOOL needsToScale = NO;
|
||||
|
||||
if (sourceImage.size.width > targetSize.width) {
|
||||
needsToScale = YES;
|
||||
}
|
||||
|
||||
if (sourceImage.size.height > targetSize.height) {
|
||||
needsToScale = YES;
|
||||
}
|
||||
|
||||
return needsToScale;
|
||||
}
|
||||
|
||||
- (BOOL)needsToScale:(CGSize)targetSize {
|
||||
return [UIImage image:self needsToScale:targetSize];
|
||||
}
|
||||
|
||||
|
||||
@end
|
||||
Reference in a new issue