NativeScript Task Pie

A NativeScript module for drawing Microsoft Planner like progress charts.

License

MIT license

Platforms

• Android
• iOS (currently in progress!)

Installation

Run

tns plugin add nativescript-taskpie

inside your app project to install the module.

Demo

The demo app can be found here.

Documentation

Have a look at the index.ts file to get an overview of all types, methods and properties.

Otherwise...

Usage

<Page xmlns="http://schemas.nativescript.org/tns.xsd"
      xmlns:taskPie="nativescript-taskpie"
      navigatingTo="onNavigatingTo">

  <taskPie:TaskPie id="my-taskpie"
                   description="79 days left"
                   pieText="16" pieSubText="tasks left" />
</Page>

Add this CSS to your app.css, e.g.

It is possible that you have to customize some properties:

.nsTaskPie-pieArea .nsTaskPie-textArea {
    margin-top: -16;
}

.nsTaskPie-pieArea .nsTaskPie-textArea .nsTaskPie-text {
    text-align: center;
    font-size: 40;
    color: #a6a6a6;
    padding: 0;
}

.nsTaskPie-pieArea .nsTaskPie-textArea .nsTaskPie-subText {
    text-align: center;
    font-size: 20;
    color: #a6a6a6;
    margin-top: -8;
    padding: 0;
}

.nsTaskPie-description {
    font-size: 20;
    margin-bottom: 12;
}

.nsTaskPie-categories .nsTaskPie-category {
    margin-left: 4;
    margin-right: 4;
}

.nsTaskPie-categories .nsTaskPie-border {
    height: 8;
}

.nsTaskPie-categories .nsTaskPie-count,
.nsTaskPie-categories .nsTaskPie-name,
.nsTaskPie-description {
    text-align: center;
    color: #333333;
}

.nsTaskPie-categories .nsTaskPie-count {
    font-size: 16;
    margin-top: 4;
}

.nsTaskPie-categories .nsTaskPie-name {
    font-size: 12;
}

The following XML shows the structure of a TaskPie view:

<TaskPie cssClass="nsTaskPie"
         rows="auto,auto,auto" columns="*">
  
  <!-- pieGrid() -->
  <GridLayout cssClass="nsTaskPie-pieArea"
              rows="auto" columns="1*,4*,1*"
              horizontalAlignment="stretch" verticalAlignment="center">
        
    <!-- pieImage() -->        
    <Image cssClass="nsTaskPie-pie"
           col="1" row="0"
           horizontalAlignment="stretch" verticalAlignment="center" />
           
    <!-- pieTextArea() -->
    <StackLayout cssClass="nsTaskPie-textArea"
                 col="0" row="0" colspan="3"
                 horizontalAlignment="stretch" verticalAlignment="center">
    
      <!-- pieTextField() --> 
      <Label cssClass="nsTaskPie-text" />
      
      <!-- pieSubTextField() --> 
      <Label cssClass="nsTaskPie-subText" />
    </StackLayout>
    
    <!-- descriptionField() -->
    <Label cssClass="nsTaskPie-description"
           col="0" row="1" />
           
    <!-- categoryGrid() --> 
    <GridLayout cssClass="nsTaskPie-categories"
                rows="*" columns="*,*,*,*">
                
      <!-- [0] "Not started" -->
      <StackLayout cssClass="nsTaskPie-category"
                   row="0" col="0">
                   
        <Border cssClass="nsTaskPie-border"
                backgroundColor="#ffc90e"
                horizontalAlignment="stretch" />
        
        <Label cssClass="nsTaskPie-count"
               horizontalAlignment="stretch"
               text="0" textWrap="true" />
        
        <Label cssClass="nsTaskPie-name"
               horizontalAlignment="stretch"
               text="Not started" textWrap="true" />
      </StackLayout>
      
      <!-- [1] "Late" -->
      <StackLayout cssClass="nsTaskPie-category"
                   col="1" row="0">
                   
        <Border cssClass="nsTaskPie-border"
                backgroundColor="#d54130"
                horizontalAlignment="stretch" />
        
        <Label cssClass="nsTaskPie-count"
               horizontalAlignment="stretch"
               text="0" textWrap="true" />
        
        <Label cssClass="nsTaskPie-name"
               horizontalAlignment="stretch"
               text="Late" textWrap="true" />
      </StackLayout>
      
      <!-- [2] "In progress" -->
      <StackLayout cssClass="nsTaskPie-category"
                   col="2" row="0">
                   
        <Border cssClass="nsTaskPie-border"
                backgroundColor="#4cabe1"
                horizontalAlignment="stretch" />
        
        <Label cssClass="nsTaskPie-count"
               horizontalAlignment="stretch"
               text="0" textWrap="true" />
        
        <Label cssClass="nsTaskPie-name"
               horizontalAlignment="stretch"
               text="In progress" textWrap="true" />
      </StackLayout>
      
      <!-- [3] "Completed" -->
      <StackLayout cssClass="nsTaskPie-category"
                   col="3" row="0">
                   
        <Border cssClass="nsTaskPie-border"
                backgroundColor="#88be39"
                horizontalAlignment="stretch" />
        
        <Label cssClass="nsTaskPie-count"
               horizontalAlignment="stretch"
               text="0" textWrap="true" />
        
        <Label cssClass="nsTaskPie-name"
               horizontalAlignment="stretch"
               text="Completed" textWrap="true" />
      </StackLayout>
    </GridLayout>
  </GridLayout>
</TaskPie>

Dependency properties

Categories

By default you have the following categories:

Add own

You can use the addCategory() method to add categories.

import TaskPieModule = require('nativescript-taskpie');

export function onNavigatingTo(args) {
    var page = args.object;
    
    var pie = <TaskPieModule.TaskPie>page.getViewById('my-taskpie'));
    
    // this switches the view in 'edit mode'
    // what means that is not refresh until the action
    // has been finished
    pie.edit(() => {
        pie.clearCategories();
        
        pie.addCategory('Pending', 'ffc90e', TaskPieModule.TaskCategoryType.NotStarted)
           .addCategory('Late!', 'd54130', TaskPieModule.TaskCategoryType.NotStarted)
           .addCategory('On work', '4cabe1', TaskPieModule.TaskCategoryType.InProgress)
           .addCategory('Complete', '88be39', TaskPieModule.TaskCategoryType.Completed);
    });
}

You also can use the categories (dependency) property to set an own list of items.

pie.categories = [
    {
        name: 'Pending',
        color: 'ffc90e',
        type: TaskPieModule.TaskCategoryType.NotStarted,
    },
    
    {
        name: 'Late!',
        color: 'd54130',
        type: TaskPieModule.TaskCategoryType.NotStarted,
    },
    
    {
        name: 'On work',
        color: '4cabe1',
        type: TaskPieModule.TaskCategoryType.InProgress,
    },
    
    {
        name: 'Complete',
        color: '88be39',
        type: TaskPieModule.TaskCategoryType.Completed,
    },
];

Each item has the following structure:

interface ITaskCategory {
    /**
     * The color.
     */
    color?: string | number | Color.Color;

    /**
     * Number of tasks.
     */
    count?: number;

    /**
     * The name.
     */
    name: string;

    /**
     * The type.
     */
    type?: TaskCategoryType;
}

The recommed way is to use the addCategory() method. These method creates ITaskCategory objects that raise change events for its properties, so this has better support for data binding.

Data binding

The following example is similar to the demp app.

XML

<Page xmlns="http://schemas.nativescript.org/tns.xsd"
      xmlns:taskPie="nativescript-taskpie"
      navigatingTo="onNavigatingTo">

  <taskPie:TaskPie id="my-taskpie"
                   counts="{{ taskCounts }}"
                   pieSize="{{ pieSize }}"
                   description="{{ daysLeft ? (daysLeft + ' days left') : null }}"
                   pieText="{{ pie.totalLeft }}" pieSubText="tasks left"
                   countChanged="{{ taskCountChanged }}" />
</Page>

ViewModel

import Observable = require("data/observable");
import TaskPieModule = require('nativescript-taskpie');

export function onNavigatingTo(args) {
    var page = args.object;
    var pie = <TaskPieModule.TaskPie>page.getViewById('my-taskpie');

    var viewModel: any = new Observable.Observable();
    viewModel.set('daysLeft', 79);  // value for description
    viewModel.set('pie', pie);
    viewModel.set('pieSize', 720);  // draw pie with 720x720
    viewModel.set('taskCounts', [11, 4, 1, 11]);  // initial count values
    
    viewModel.taskCountChanged = (category, newValue, oldValue, pie) => {
        console.log("Value of category '" + category.name + "' changed from '" + oldValue + "' to '" + newValue + "'.");
    };
    
    page.bindingContext = viewModel;
}