IQCalendarHeaderView.h

//
//  IQCalendarHeaderView.h
//  IQWidgets for iOS
//
//  Copyright 2011 EvolvIQ
//  Licensed under the Apache License, Version 2.0 (the "License");
//  you may not use this file except in compliance with the License.
//  You may obtain a copy of the License at
//
//    http://www.apache.org/licenses/LICENSE-2.0
//
//  Unless required by applicable law or agreed to in writing, software
//  distributed under the License is distributed on an "AS IS" BASIS,
//  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//  See the License for the specific language governing permissions and
//  limitations under the License.
//

#import <UIKit/UIKit.h>

extern NSString* IQLocalizationFormatWeekNumber(int weekNumber);

typedef struct _IQCalendarHeaderItem {
    CGFloat x;
    CGFloat width;
    NSTimeInterval timeOffset;
} IQCalendarHeaderItem;

typedef enum _IQCalendarHeaderViewUserInteraction {
    IQCalendarHeaderViewUserInteractionHeader,
    IQCalendarHeaderViewUserInteractionNext,
    IQCalendarHeaderViewUserInteractionPrev
} IQCalendarHeaderViewUserInteraction;

@protocol IQCalendarHeader;

@protocol IQCalendarHeaderViewDelegate
@optional
- (void) headerView:(UIView<IQCalendarHeader>*)v didReceiveInteraction:(IQCalendarHeaderViewUserInteraction)interaction;
@end

// Common interface for headers for IQScheduleView and IQCalendarView
@protocol IQCalendarHeader <NSObject>
@optional
- (void)setTintColor:(UIColor*)tintColor;
- (void)setTextColor:(UIColor*)textColor;
- (void)setShadowColor:(UIColor*)textColor;

- (void)setTitleCalendarUnits:(NSCalendarUnit)units;
- (void)setCornerCalendarUnits:(NSCalendarUnit)units;
- (void)setItemCalendarUnits:(NSCalendarUnit)units;
- (void)setItems:(const IQCalendarHeaderItem*)items count:(NSUInteger)count cornerWidth:(CGFloat)cornerWidth startTime:(NSDate*)time titleOffset:(NSTimeInterval)offset animated:(BOOL)animated;
@end

@interface IQCalendarHeaderView : UIView<IQCalendarHeader> {
    NSDateFormatter* titleFormatter;
    NSDateFormatter* itemFormatter;
    NSDateFormatter* cornerFormatter;
    NSCalendarUnit titleCalendarUnits;
    NSCalendarUnit cornerCalendarUnits;
    NSCalendarUnit itemCalendarUnits;
    IQCalendarHeaderItem items[16];
    UILabel* itemLabels[16];
    NSUInteger numItems;
    UIView* border;
    UILabel* titleLabel;
    UIView* leftArrow, *rightArrow;
    BOOL displayArrows;
    UIColor* textColor;
    NSDate* startDate;
}

@property (nonatomic, readonly) UILabel* titleLabel;
@property (nonatomic, retain) NSObject<IQCalendarHeaderViewDelegate>* delegate;

#pragma mark Appearance
@property (nonatomic) BOOL displayArrows;
@property (nonatomic, retain) UIColor* textColor;
@property (nonatomic, retain) UIColor* shadowColor;
@property (nonatomic) CGSize shadowOffset;
@end