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Timeline View

Last Updated on : 2022-02-16 08:57:25download

The timeline view component linearly displays the time points of SD card-stored or cloud-stored video footage to be played back. Users can slide the timeline and precisely locate the target time point and video clip to start playback.

Preview

Timeline View

Integrate with the SDK

  1. Add the following code block to the Podfile:

    platform :ios, '9.0'
    
    target 'your_target_name' do
    
    pod "TuyaCameraUIKit"
    
    end
    
  2. In the root directory of your project, run pod update.

Classes and protocols

Class (Protocol) Description
TuyaTimelineView Timeline view class protocol, inherited from UIView
TuyaTimelineViewDelegate Timeline view delegate protocol
TuyaTimelineViewSource Timeline data source protocol

TuyaTimelineView

Properties

Name Type Description
spacePerUnit CGFloat The width of each time unit that is enclosed by two consecutive long tick marks on the timeline.
unitMode Enum The time unit mode. The value can be set to 60 seconds, 600 seconds, or 3,600 seconds.
tickMarkColor UIColor The color of tick marks.
backgroundGradientColors NSArray The array of gradient background colors of the timeline.
backgroundGradientLocations NSArray The array of gradient positions for the timeline background colors.
contentColor UIColor The data rendering colors on the timeline. Gradient colors are supported.
contentGradientColors NSArray The array of gradient colors for rendering timeline data.
contentGradientLocations NSArray The array of gradient positions for the timeline data rendering colors.
timeHeaderHeight CGFloat The height of the time text bar.
timeTextTop CGFloat The position of the time text on the y-axis. This property in tandem with timeHeaderHeight determines each data rendering position.
timeStringAttributes NSDictionary The properties of time text.
showTimeText BOOL Specifies whether to show time text.
showShortMark BOOL Specifies whether to show short tick marks.
currentTime NSTimeInterval The Unix timestamp currently selected on the timeline.
date NSDate The specified date.
timeZone NSTimeZone The specified time zone.
isDragging BOOL Indicates whether the timeline is being dragged.
isDecelerating BOOL Indicates whether the timeline is decelerating.
midLineColor UIColor The color of the middle line on the timeline.
selectionBoxColor UIColor The color of the selection frame on the timeline.
selectedTimeRange NSRange The time range that is selected with the selection frame.
isSelectionEnabled BOOL Specifies whether to enable the selection mode.
selectionTimeBackgroundColor UIColor The background color of timeline labels in the selection frame.
selectionTimeTextColor UIColor The text color of timeline labels in the selection frame.
selectionTimeTextFontSize UIColor The font size of timeline labels in the selection frame.
sourceModels NSArray The array of source data from which timeline data is retrieved.
delegate id The timeline delegate.

Enable time selection mode

API description

- (void)enableSelectionModeWithMinLength:(NSInteger)min maxLength:(NSInteger)max;

Parameters

Parameter Type Description
min NSInteger The minimum duration that can be selected with the selection frame.
max NSInteger The maximum duration that can be selected with the selection frame.

Exit selection and return selected range

API description

- (NSRange)finishSelection;

Set current time on timeline

API description

If the parameter animated is set to YES, the timeline slides to the specified time point at a constant speed, and the delegate method - (void)timelineView:didEndScrollingAtTime:inSource: is triggered.

- (void)setCurrentTime:(NSTimeInterval)currentTime animated:(BOOL)animated;

Parameters

Parameter Type Description
currentTime NSTimeInterval The time point currently selected on the timeline.
animated BOOL Specifies whether to enable the animated mode.

TuyaTimelineViewDelegate

Start dragging timeline

API description

- (void)timelineViewWillBeginDragging:(TuyaTimelineView *)timeLineView;

Stop dragging timeline

API description

If decelerate is set to YES, the timeline is set to be accelerating.

- (void)timelineViewDidEndDragging:(TuyaTimelineView *)timeLineView willDecelerate:(BOOL)decelerate;

Slide to specific time point

API description

If isDragging is set to YES, the timeline is set to be moving.

- (void)timelineViewDidScroll:(TuyaTimelineView *)timeLineView time:(NSTimeInterval)timeInterval isDragging:(BOOL)isDragging;

Stop timeline from sliding

API description

timeInterval specifies the time point at which the timeline stops. source specifies the data source for this time point.

- (void)timelineView:(TuyaTimelineView *)timeLineView didEndScrollingAtTime:(NSTimeInterval)timeInterval inSource:(id<TuyaTimelineViewSource>)source;

Set time unit mode

API description

unitMode specifies the current time unit mode of the timeline.

- (void)timelineView:(TuyaTimelineView *)timeLineView scaleToUnitMode:(TuyaTimelineUnitMode)unitMode;

TuyaTimelineViewSource

The API methods of the data source protocol are used to get the start time point and end time point of a time segment. The number of seconds is returned to indicate the date parameter value.

Query start time

API description

- (NSTimeInterval)startTimeIntervalSinceDate:(NSDate *)date;

Query end time

API description

- (NSTimeInterval)stopTimeIntervalSinceDate:(NSDate *)date;

A timeline is used to render non-overlapping time segments on a date. For more information about code examples, see the files TYCameraTimeLineModel.m and TYDemoCameraPlaybackViewController.m files in the sample.