时间轴编辑器

timeline_editor

Early version of a timeline editor. Support:

• Move of element
• Context menu
• Zoom of timeline
• Progress indicator
• track boxes
• continuous tracks
• scrub

Usage

Installation

Add timeline_editor as a dependency in your pubspec.yaml file (what?).

Import

Import timeline_editor:

import 'package:timeline_editor/timeline_editor.dart';

Migrate from V2 to V3

We now use Duration instead of seconds. To migrate you can use the helper functions to transform your seconds to Duration:

Duration durationFromSeconds(double seconds)
double durationToSeconds(Duration duration)

widgets

See example

TimelineEditor(
                  positionStream: positionStream,
                  onPositionTap: (s) => position = s,
                  countTracks: 2,
                  trackBuilder: (track, pps, duration) => track == 1
                      ? TimelineEditorTrack(
                          defaultColor: Colors.green[700],
                          boxes: [
                            TimelineEditorBox(box1Start, 100,
                                onMoved: updateBox1,
                                color: Colors.blue,
                                onMovedEnd: () => print('end moved')),
                            TimelineEditorBox(157, 80),
                          ],
                          pixelsPerSeconds: pps,
                          duration: duration,
                        )
                      : TimelineEditorTrack.fromContinuous(
                          continuousBoxes:[
                            TimelineEditorContinuousBox(
                                Duration.zero,
                                color: Colors.deepOrange,
                                child: const Image(image: const AssetImage('assets/image2.jpg')),
                            ),
                            TimelineEditorContinuousBox(
                                box2Start,
                                menuEntries: [
                                PopupMenuItem<String>(child: Text('Delete'), value: 'deleted')
                                ],
                                onMoved: updateBox2,
                                onSelectedMenuItem: (v) {
                                print('Selected: $v');
                                setState(() {
                                    deleted = true;
                                });
                                },
                                onTap: (start, duration) =>
                                    print('tapped for $start to ${start + duration}'),
                                color: Colors.black,
                                child: const Image(image: const AssetImage('assets/image.jpg')),
                            ),
                            ],
                          pixelsPerSeconds: pps,
                          duration: duration,
                        ),
                  duration: Duration(seconds: 300),
                ))

TimelineEditor

Main widget used to hold your tracks, display position and time

TimelineEditorTrack

A provided track to use with the TimelineEditor track builder (you can use your own)

It can either hold simple TimelineEditorBox with a start and an end

or TimelineEditorTrack.fromContinuous with TimelineEditorContinuousBox to have a conitunuous track where you only set start time and duration will be calculated so the box go up to the next box

Example

/example