I am creating a donut chart using Chartist but unable to add a custom tooltip with resize slice on the mouse hover event. Chartist "Draw" method is rerender on changing the position of mouse on hover of the chart
I pasted my code as below:
/* eslint-disable no-unused-vars */
import React, {useState} from 'react'
import PropTypes from 'prop-types'
import ChartistGraph from 'react-chartist'
import Chartist from 'chartist'
import styles from './MyChart.scss'
import {formatNumber} from '../../../../utils/formatter'
import MyChartInfo from './MyChartInfo'
function MyChart ({ dataSeries, getDetailsTable }) {
const [changePercent, setChangePercent] = useState(0)
const [showToolTip, setShowToolTip] = useState(false)
const [myChartInfoDetails, setMyChartInfoDetails] = useState({sectorName: '', changePercent: ''})
const [toolTipPosition, setToolTipPosition] = useState({})
function setToolTip () {
const PopOverData = [myChartInfoDetails.sectorName || '', `% Return: ${myChartInfoDetails.changePercent || ''}`, '(Click to view top & worst performing equities)']
return (<MyChartInfo dataTable={PopOverData} style={toolTipPosition} />)
}
let pieOptions = {
width: '520px',
height: '520px',
donut: true,
donutWidth: 150,
donutSolid: false,
startAngle: 270,
showLabel: true,
chartPadding: 60,
labelOffset: 105,
labelDirection: 'explode',
labelInterpolationFnc: function (value) {
return value
}
}
let pieData = {
series: dataSeries && dataSeries.length > 0 ? dataSeries.map(item => Math.abs(item.value)) : [100],
labels: dataSeries && dataSeries.length > 0 ? dataSeries.map(item => item.name.concat('<br>', formatNumber(item.value, {precision: 2, negSign: true, posSign: true}))) : ['']
}
// eslint-disable-next-line no-unused-vars
const listner = {
created: (chart) => {
const chartPie = document.querySelectorAll('.ct-chart-donut .ct-slice-donut')
chartPie && chartPie.forEach((pie) => {
pie.addEventListener('mouseenter', (e) => {
e.stopPropagation()
pie.setAttribute('style', 'stroke-width: 170px;')
console.log('hover aa ', changePercent, Math.abs(pie.getAttribute('ct:value')))
setChangePercent(Math.abs(pie.getAttribute('ct:value')))
let topPosition = e.layerY + 30
let leftPosition = e.layerX + 30
setToolTipPosition({top: topPosition, left: leftPosition})
const myChartData = dataSeries.find(sector => Math.abs(sector.value) === Math.abs(pie.getAttribute('ct:value')))
setSectorDetails({sectorName: myChartData.name, changePercent: myChartData.value})
setShowToolTip(true)
})
pie.addEventListener('mouseleave', (e) => {
pie.setAttribute('style', 'stroke-width: 150px;')
setShowToolTip(false)
})
pie.addEventListener('click', (e) => {
const Id = dataSeries.find(sector => Math.abs(sector.value) === Math.abs(pie.getAttribute('ct:value'))).id.toString()
console.log('click ', Id, pie.getAttribute('ct:value'))
getDetailsTable(Id)
})
})
},
draw: (data) => {
// console.log('data', data)
if (data.type === 'slice') {
// Get the total path length in order to use for dash array animation
var pathLength = data.element._node.getTotalLength()
// Set a dasharray that matches the path length as prerequisite to animate dashoffset
data.element.attr({
'stroke-dasharray': pathLength + 'px ' + pathLength + 'px'
})
let noOfNonZeros = dataSeries.length > 0 && dataSeries.filter(e => e.value > 0).length
// Create animation definition while also assigning an ID to the animation for later sync usage
var animationDefinition = {
'stroke-dashoffset': {
id: 'anim' + data.index,
dur: 1,
from: -pathLength + 'px',
to: noOfNonZeros > 1 ? '2px' : '0px',
easing: Chartist.Svg.Easing.easeOutQuint,
// We need to use `fill: 'freeze'` otherwise our animation will fall back to initial (not visible)
fill: 'freeze'
}
}
// If this was not the first slice, we need to time the animation so that it uses the end sync event of the previous animation
if (data.index !== 0) {
animationDefinition['stroke-dashoffset'].begin = 'anim' + (data.index - 1) + '.end'
}
// We need to set an initial value before the animation starts as we are not in guided mode which would do that for us
data.element.attr({
'stroke-dashoffset': -pathLength + 'px'
})
// We can't use guided mode as the animations need to rely on setting begin manually
// See http://gionkunz.github.io/chartist-js/api-documentation.html#chartistsvg-function-animate
data.element.animate(animationDefinition, false)
if (dataSeries.length === 0) {
data.element._node.setAttribute('data-value', 'no-composition')
}
}
if (data.type === 'label') {
let textHtml = ['<p>', data.text, '</p>'].join('')
let multilineText = Chartist.Svg('svg').foreignObject(
textHtml,
{
style: 'overflow: visible;',
x: data.x - 30,
y: data.y - 30,
width: 90,
height: 30
},
'ct-label'
)
data.element.replace(multilineText)
}
}
}
return (
<div data-testid='gPieChart' id='performance_chart'>
{<ChartistGraph
data={pieData}
options={pieOptions}
type='Pie'
style={{ width: '100%', height: '100%' }}
className={styles.MyChart}
listener={listner}
/>
}
{showToolTip && setToolTip()}
</div>
)
}
MyChart.propTypes = {
dataSeries: PropTypes.array,
getDetailsTable: PropTypes.func
}
export default MyChart
Output
I want to add a custom tooltip with resize slice functionality on mouse hover event
Related
To show all bars I have set the horizontal scrolling to chartjs in Ionic angular project , and i have used the DataLabelsPlugin constant for bars label. and while scrolling the datalabels is overlapping with y-axis its not hiding before y-axis like bars.
and also horizontal scroll is not happening smoothly.
graph working fine as a expected output
marked with issue about - after scrolling the datalabels went over the y-axis not hide below y-axis like bars
I have tried to add and used the custom datalabels but same issue i am getting and i didnt find any css or attribute on 'https://www.chartjs.org/docs/latest/' official site or not on any other sites -> to hide the datalabels from over the y-axis.
ts file code:
createBarChart() {
const footer = (tooltipItems) => {
let sum = 0;
tooltipItems.forEach(function(tooltipItem) {
sum += tooltipItem.parsed.y;
});
return this.util.getFormatValue(sum)+'%';
};
const toolLabel = (tooltipItems) => {
return "";
};
const toolTitle = (tooltipItems) => {
var string_to_array = function (str) {
return str.trim().split("#$#$");
};
var ss;
tooltipItems.forEach(function(tooltipItem) {
ss = string_to_array(tooltipItem.label.replace(/(.{40})/g, "$1#$#$"))
});
return ss;
};
let graphSize = Math.max(...this.daywise_occupancy);
if(graphSize == 0){
graphSize =1;
}
const plugin = {
id: 'customCanvasBackgroundColor',
beforeDraw: (chart, args, options) => {
const {ctx} = chart;
ctx.save();
ctx.globalCompositeOperation = 'destination-over';
ctx.fillStyle = '#ffffff';
ctx.fillRect(0, 0, chart.width, chart.height);
ctx.restore();
}
};
this.bars = new Chart(this.barchart6.nativeElement, {
type: 'bar',
data: {
labels: this.daywise_date,
datasets: [{
data: this.daywise_occupancy,
backgroundColor: function(context) {
var value = context.dataset.data[context.dataIndex];
return value <= 15 ? '#f95959'
: value > 15 && value <=60 ? '#F5A623'
: '#00ADB5'
},
borderColor: function(context) {
var value = context.dataset.data[context.dataIndex];
return value <= 15 ? '#f95959'
: value > 15 && value <=60 ? '#F5A623'
: '#00ADB5'
},
borderWidth: 1,
barThickness:30,
}]
},
plugins: [DataLabelsPlugin,plugin],
options: {
animations: {
tension: {
duration: 1000,
easing: 'linear',
from: 1,
to: 0,
loop: true
}
},
scales: {
x: {
min:0,
max:5,
ticks : {
maxRotation: 70,
minRotation: 70,
font:{
size:10,
},
callback: function(value : any, index, ticks_array) {
let characterLimit = 12;
let label = this.getLabelForValue(value);
if ( label.length >= characterLimit) {
return label.slice(0, label.length).substring(0, characterLimit -1).trim() + '..';
}
return label;
}
}
},
y: { // defining min and max so hiding the dataset does not change scale range
min: 0,
max: this.loader.getGraphsizeRound(graphSize),
title: { display: true, text: (this.titleSet)? '% of Branches Contribution' : '% of Seat Occupancy' },
beginAtZero: true,
display: true,
position: 'left',
// ticks: {
// stepSize: 6,
// },
}
},
plugins: {
legend: {
display: false
},
datalabels:{
anchor: 'end',
align: 'end',labels: {
value: {
color: '#2C3A45;',
formatter: function (value) {
// return Math.round(value) + '%';
return value + '%';
},
font:{
weight:700,
size:14
}
}
}
},
tooltip: {
callbacks: {
footer:footer,
label: toolLabel,
title:toolTitle
},
displayColors:false
}
}
}
});
this.bars.canvas.addEventListener('touchmove',(eve) => {
this.touchmove(eve,this.bars)
});
this.bars.canvas.addEventListener('touchstart',(eve) => {
this.touchstart(eve)
});
}
touchstart(e)
{
this.startX = e.touches[0].clientX;
this.startY = e.touches[0].clientY;
}
touchmove(e,chart)
{
var deltaX = e.touches[0].clientX - this.startX,
deltaY = e.touches[0].clientY - this.startY;
const dataLength = chart.data.labels.length;
let min = chart.options.scales.x.min;
if(deltaX < 0){
if( chart.options.scales.x.max >= dataLength ){
chart.options.scales.x.min = dataLength - 5;
chart.options.scales.x.max = dataLength;
}else{
chart.options.scales.x.min += 1;
chart.options.scales.x.max += 1;
}
// console.log( chart.options.scales.x.min);
// chart1line.options.scales.y.max = graphSize
}else if(deltaX > 0){
if( chart.options.scales.x.min <= 0 ){
chart.options.scales.x.min = 0;
chart.options.scales.x.max = 4;
}else{
chart.options.scales.x.min -= 1;
chart.options.scales.x.max -= 1;
}
}else{
}
chart.update();
}
HTML code:
<div class="chartWrapper">
<div class="chartAreaWrapper">
<canvas #barchart6 height="190" max-height="190" width="0"></canvas>
</div>
</div>
My expected output
horizontal scroll work smoothly.
after scrolling label should not overlap on y-axis.
I want to change the background colour of the tooltip value in Amchart 5.
I mean the black background colour.
You can create an instance of Tooltip and store it in a variable. Use it in your valueAxis configuration, then modify the background color of your tooltip through its background element.
let tooltip = am5.Tooltip.new(root, {});
let valueAxis = mainPanel.yAxes.push(
am5xy.ValueAxis.new(root, {
// ...
tooltip,
// ...
})
);
tooltip.get("background").set("fill", am5.color(0x0000ff));
Full example (using this demo from the official website):
am5.ready(function() {
// Create root element
// -------------------------------------------------------------------------------
// https://www.amcharts.com/docs/v5/getting-started/#Root_element
let root = am5.Root.new("chartdiv");
// Set themes
// -------------------------------------------------------------------------------
// https://www.amcharts.com/docs/v5/concepts/themes/
root.setThemes([am5themes_Animated.new(root)]);
// Create a stock chart
// -------------------------------------------------------------------------------
// https://www.amcharts.com/docs/v5/charts/stock-chart/#Instantiating_the_chart
let stockChart = root.container.children.push(
am5stock.StockChart.new(root, {})
);
// Set global number format
// -------------------------------------------------------------------------------
// https://www.amcharts.com/docs/v5/concepts/formatters/formatting-numbers/
root.numberFormatter.set("numberFormat", "#,###.00");
// Create a main stock panel (chart)
// -------------------------------------------------------------------------------
// https://www.amcharts.com/docs/v5/charts/stock-chart/#Adding_panels
let mainPanel = stockChart.panels.push(
am5stock.StockPanel.new(root, {
wheelY: "zoomX",
panX: true,
panY: true
})
);
// Create value axis
// -------------------------------------------------------------------------------
// https://www.amcharts.com/docs/v5/charts/xy-chart/axes/
let tooltip = am5.Tooltip.new(root, {});
let valueAxis = mainPanel.yAxes.push(
am5xy.ValueAxis.new(root, {
renderer: am5xy.AxisRendererY.new(root, {
pan: "zoom"
}),
extraMin: 0.1, // adds some space for for main series
tooltip,
numberFormat: "#,###.00",
extraTooltipPrecision: 2
})
);
tooltip.get("background").set("fill", am5.color(0x0000ff));
let dateAxis = mainPanel.xAxes.push(
am5xy.GaplessDateAxis.new(root, {
baseInterval: {
timeUnit: "minute",
count: 1
},
renderer: am5xy.AxisRendererX.new(root, {}),
tooltip: am5.Tooltip.new(root, {})
})
);
// add range which will show current value
let currentValueDataItem = valueAxis.createAxisRange(valueAxis.makeDataItem({ value: 0 }));
let currentLabel = currentValueDataItem.get("label");
if (currentLabel) {
currentLabel.setAll({
fill: am5.color(0xffffff),
background: am5.Rectangle.new(root, { fill: am5.color(0x000000) })
})
}
let currentGrid = currentValueDataItem.get("grid");
if (currentGrid) {
currentGrid.setAll({ strokeOpacity: 0.5, strokeDasharray: [2, 5] });
}
// Add series
// -------------------------------------------------------------------------------
// https://www.amcharts.com/docs/v5/charts/xy-chart/series/
let valueSeries = mainPanel.series.push(
am5xy.CandlestickSeries.new(root, {
name: "AMCH",
clustered: false,
valueXField: "Date",
valueYField: "Close",
highValueYField: "High",
lowValueYField: "Low",
openValueYField: "Open",
calculateAggregates: true,
xAxis: dateAxis,
yAxis: valueAxis,
legendValueText:
"open: [bold]{openValueY}[/] high: [bold]{highValueY}[/] low: [bold]{lowValueY}[/] close: [bold]{valueY}[/]",
legendRangeValueText: ""
})
);
// Set main value series
// -------------------------------------------------------------------------------
// https://www.amcharts.com/docs/v5/charts/stock-chart/#Setting_main_series
stockChart.set("stockSeries", valueSeries);
// Add a stock legend
// -------------------------------------------------------------------------------
// https://www.amcharts.com/docs/v5/charts/stock-chart/stock-legend/
let valueLegend = mainPanel.plotContainer.children.push(
am5stock.StockLegend.new(root, {
stockChart: stockChart
})
);
// Set main series
// -------------------------------------------------------------------------------
// https://www.amcharts.com/docs/v5/charts/stock-chart/#Setting_main_series
valueLegend.data.setAll([valueSeries]);
// Add cursor(s)
// -------------------------------------------------------------------------------
// https://www.amcharts.com/docs/v5/charts/xy-chart/cursor/
mainPanel.set(
"cursor",
am5xy.XYCursor.new(root, {
yAxis: valueAxis,
xAxis: dateAxis,
snapToSeries: [valueSeries],
snapToSeriesBy: "y!"
})
);
// Add scrollbar
// -------------------------------------------------------------------------------
// https://www.amcharts.com/docs/v5/charts/xy-chart/scrollbars/
let scrollbar = mainPanel.set(
"scrollbarX",
am5xy.XYChartScrollbar.new(root, {
orientation: "horizontal",
height: 50
})
);
stockChart.toolsContainer.children.push(scrollbar);
let sbDateAxis = scrollbar.chart.xAxes.push(
am5xy.GaplessDateAxis.new(root, {
baseInterval: {
timeUnit: "minute",
count: 1
},
renderer: am5xy.AxisRendererX.new(root, {})
})
);
let sbValueAxis = scrollbar.chart.yAxes.push(
am5xy.ValueAxis.new(root, {
renderer: am5xy.AxisRendererY.new(root, {})
})
);
let sbSeries = scrollbar.chart.series.push(
am5xy.LineSeries.new(root, {
valueYField: "Close",
valueXField: "Date",
xAxis: sbDateAxis,
yAxis: sbValueAxis
})
);
sbSeries.fills.template.setAll({
visible: true,
fillOpacity: 0.3
});
// Data generator
let firstDate = new Date();
let lastDate;
let value = 1200;
// data
function generateChartData() {
let chartData = [];
for (var i = 0; i < 50; i++) {
let newDate = new Date(firstDate);
newDate.setMinutes(newDate.getMinutes() - i);
value += Math.round((Math.random() < 0.49 ? 1 : -1) * Math.random() * 10);
let open = value + Math.round(Math.random() * 16 - 8);
let low = Math.min(value, open) - Math.round(Math.random() * 5);
let high = Math.max(value, open) + Math.round(Math.random() * 5);
chartData.unshift({
Date: newDate.getTime(),
Close: value,
Open: open,
Low: low,
High: high
});
lastDate = newDate;
}
return chartData;
}
let data = generateChartData();
// set data to all series
valueSeries.data.setAll(data);
sbSeries.data.setAll(data);
// update data
let previousDate;
setInterval(function() {
let valueSeries = stockChart.get("stockSeries");
let date = Date.now();
let lastDataObject = valueSeries.data.getIndex(valueSeries.data.length - 1);
if (lastDataObject) {
let previousDate = lastDataObject.Date;
let previousValue = lastDataObject.Close;
value = am5.math.round(previousValue + (Math.random() < 0.5 ? 1 : -1) * Math.random() * 2, 2);
let high = lastDataObject.High;
let low = lastDataObject.Low;
let open = lastDataObject.Open;
if (am5.time.checkChange(date, previousDate, "minute")) {
open = value;
high = value;
low = value;
let dObj1 = {
Date: date,
Close: value,
Open: value,
Low: value,
High: value
};
valueSeries.data.push(dObj1);
sbSeries.data.push(dObj1);
previousDate = date;
} else {
if (value > high) {
high = value;
}
if (value < low) {
low = value;
}
let dObj2 = {
Date: date,
Close: value,
Open: open,
Low: low,
High: high
};
valueSeries.data.setIndex(valueSeries.data.length - 1, dObj2);
sbSeries.data.setIndex(sbSeries.data.length - 1, dObj2);
}
// update current value
if (currentLabel) {
currentValueDataItem.animate({ key: "value", to: value, duration: 500, easing: am5.ease.out(am5.ease.cubic) });
currentLabel.set("text", stockChart.getNumberFormatter().format(value));
let bg = currentLabel.get("background");
if (bg) {
if(value < open){
bg.set("fill", root.interfaceColors.get("negative"));
}
else{
bg.set("fill", root.interfaceColors.get("positive"));
}
}
}
}
}, 1000);
}); // end am5.ready()
#chartdiv {
width: 100%;
height: 350px;
}
<script src="https://cdn.amcharts.com/lib/5/index.js"></script>
<script src="https://cdn.amcharts.com/lib/5/xy.js"></script>
<script src="https://cdn.amcharts.com/lib/5/stock.js"></script>
<script src="https://cdn.amcharts.com/lib/5/themes/Animated.js"></script>
<div id="chartdiv"></div>
Created a slider with ion-slides. But sometimes first and the last slide of slider don't fire the click event. Like we are displaying five slides: 2,3,4 slides fire event with no error and in 1,4 it doesn't fire click event neither shows any error.
Please me the solution. Thanks in advance
.html file
<ion-grid>
<ion-row>
<ion-col size="12" class="p-0">
<ion-slides pager="false" #slideWithNav
(ionSlideDidChange)="SlideDidChange(sliderOne,slideWithNav)" class="pb-10">
<ion-slide tappable *ngFor="let s of sliderOne.slidesItems" (click)="openModal(s)">
<div>
<h6 class="m-5 cardTtl">{{s.name}}</h6>
</div>
</ion-slide>
</ion-slides>
</ion-col>
</ion-row>
.js file
let slides = document.querySelector('ion-slides');
const slideOpts = {
grabCursor: true,
centeredSlides: true,
slidesPerView: 2.45,
initialSlide: 1,
pager: true,
loop: true,
autoplay:false,
coverflowEffect: {
rotate: 5,
stretch: 0,
depth: 100,
modifier: 1,
slideShadows: true,
},
pagination: {
el: '.swiper-pagination',
},
on: {
beforeInit() {
const swiper = this;
swiper.classNames.push(`${swiper.params.containerModifierClass}coverflow`);
swiper.classNames.push(`${swiper.params.containerModifierClass}3d`);
swiper.params.watchSlidesProgress = true;
swiper.originalParams.watchSlidesProgress = true;
},
setTranslate() {
const swiper = this;
const {
width: swiperWidth, height: swiperHeight, slides, $wrapperEl, slidesSizesGrid, $
} = swiper;
const params = swiper.params.coverflowEffect;
const isHorizontal = swiper.isHorizontal();
const transform$$1 = swiper.translate;
const center = isHorizontal ? -transform$$1 + (swiperWidth / 2) : -transform$$1 + (swiperHeight / 2);
const rotate = isHorizontal ? params.rotate : -params.rotate;
const translate = params.depth;
// Each slide offset from center
for (let i = 0, length = slides.length; i < length; i += 1) {
const $slideEl = slides.eq(i);
const slideSize = slidesSizesGrid[i];
const slideOffset = $slideEl[0].swiperSlideOffset;
const offsetMultiplier = ((center - slideOffset - (slideSize / 2)) / slideSize) * params.modifier;
let rotateY = isHorizontal ? rotate * offsetMultiplier : 0;
let rotateX = isHorizontal ? 0 : rotate * offsetMultiplier;
// var rotateZ = 0
let translateZ = -translate * Math.abs(offsetMultiplier * 6.2);
let translateY = isHorizontal ? 0 : params.stretch * (offsetMultiplier);
let translateX = isHorizontal ? params.stretch * (offsetMultiplier) : 0;
// Fix for ultra small values
if (Math.abs(translateX) < 0.001) translateX = 0;
if (Math.abs(translateY) < 0.001) translateY = 0;
if (Math.abs(translateZ) < 0.001) translateZ = 0;
if (Math.abs(rotateY) < 0.001) rotateY = 0;
if (Math.abs(rotateX) < 0.001) rotateX = 0;
const slideTransform = `translate3d(${translateX}px,${translateY}px,${translateZ}px) rotateX(${rotateX}deg) rotateY(${rotateY}deg)`;
$slideEl.transform(slideTransform);
$slideEl[0].style.zIndex = -Math.abs(Math.round(offsetMultiplier)) + 1;
if (params.slideShadows) {
// Set shadows
let $shadowBeforeEl = isHorizontal ? $slideEl.find('.swiper-slide-shadow-left') : $slideEl.find('.swiper-slide-shadow-top');
let $shadowAfterEl = isHorizontal ? $slideEl.find('.swiper-slide-shadow-right') : $slideEl.find('.swiper-slide-shadow-bottom');
if ($shadowBeforeEl.length === 0) {
$shadowBeforeEl = swiper.$(`<div class="swiper-slide-shadow-${isHorizontal ? 'left' : 'top'}"></div>`);
$slideEl.append($shadowBeforeEl);
}
if ($shadowAfterEl.length === 0) {
$shadowAfterEl = swiper.$(`<div class="swiper-slide-shadow-${isHorizontal ? 'right' : 'bottom'}"></div>`);
$slideEl.append($shadowAfterEl);
}
if ($shadowBeforeEl.length) $shadowBeforeEl[0].style.opacity = offsetMultiplier > 0 ? offsetMultiplier : 0;
if ($shadowAfterEl.length) $shadowAfterEl[0].style.opacity = (-offsetMultiplier) > 0 ? -offsetMultiplier : 0;
}
}
// Set correct perspective for IE10
if (swiper.support.pointerEvents || swiper.support.prefixedPointerEvents) {
const ws = $wrapperEl[0].style;
ws.perspectiveOrigin = `${center}px 50%`;
}
},
setTransition(duration) {
const swiper = this;
swiper.slides
.transition(duration)
.find('.swiper-slide-shadow-top, .swiper-slide-shadow-right, .swiper-slide-shadow-bottom, .swiper-slide-shadow-left')
.transition(duration);
}
}
}
slides.options = slideOpts;
.ts file
constructor(public modalController: ModalController) {
$.getScript('assets/js/slider.js');
this.sliderOne =
{
isBeginningSlide: true,
isEndSlide: false,
slidesItems: [
{ id: 0, name: 'text1' },
{ id: 1, name: 'text2' },
{ id: 2, name: 'text3' },
{ id: 3, name: 'text4' }
],
};
}
async openModal(s) {
const modal = await this.modalController.create({
component: SliderPage,
componentProps: {
titleName: s.name
}
});
return await modal.present();
}
using the stickman example of http://fabricjs.com/,
I have been trying to achieve moving the related circles when a line is moved. The code in the example is not well structured, heavy & with errors :), as I can not to move the the related circles symmetrically.
If in the //move the other circle part is used next line
obj.set({
'left': (s.calcLinePoints().x1 + _l),
'top': (-s.calcLinePoints().y1 + _t)
});
the difference is in the sign of collected information for y1 and we move some horizontal line visually the result OK, but in my opinion this type of "adjustment" is not the correct one...
[example code]
$(function() {
//create the fabriccanvas object & disable the canvas selection
var canvas = new fabric.Canvas('c', {
selection: false
});
//move the objects origin of transformation to the center
fabric.Object.prototype.originX = fabric.Object.prototype.originY = 'center';
function makeCircle(left, top, line1, line2, usedLine, usedEnd) {
//used line - used line for the center
//usedEnd - fromt the used line
var c = new fabric.Circle({
left: left,
top: top,
strokeWidth: 2,
radius: 6,
fill: '#fff',
stroke: '#666'
});
c.hasControls = c.hasBorders = false;
c.line1 = line1;
c.line2 = line2;
//add information which line end is used for center
var _usedLineName;
if (usedLine == 1) {
_usedLineName = line1.name;
} else {
_usedLineName = line2.name;
}
c.usedLineName = _usedLineName;
c.usedEndPoint = usedEnd;
return c;
}
function makeLine(coords, name) {
var l = new fabric.Line(coords, {
stroke: 'red',
strokeWidth: 4,
selectable: true, //false
name: name
});
l.hasControls = l.hasBorders = false;
return l;
}
//initial shape information
var line = makeLine([250, 125, 350, 125], "l1"),
line2 = makeLine([350, 125, 350, 225], "l2"),
line3 = makeLine([350, 225, 250, 225], "l3"),
line4 = makeLine([250, 225, 250, 125], "l4");
canvas.add(line, line2, line3, line4);
canvas.add(
makeCircle(line.get('x1'), line.get('y1'), line4, line, 1, 2),
makeCircle(line.get('x2'), line.get('y2'), line, line2, 1, 2),
makeCircle(line2.get('x2'), line2.get('y2'), line2, line3, 1, 2),
makeCircle(line3.get('x2'), line3.get('y2'), line3, line4, 1, 2));
canvas.on('object:moving', function(e) {
//find the moving object type
var objType = e.target.get('type');
var p = e.target;
if (objType == 'circle') {
p.line1 && p.line1.set({
'x2': p.left,
'y2': p.top
});
p.line2 && p.line2.set({
'x1': p.left,
'y1': p.top
});
//set coordinates for the lines - should be done if element is moved programmely
p.line2.setCoords();
p.line1.setCoords();
canvas.renderAll();
} else if (objType == 'line') {
//loop all circles and if some is with coordinates as some of the ends - to change them
for (var i = 0; i < canvas.getObjects('circle').length; i++) {
var currentObj = canvas.getObjects('circle')[i];
if (currentObj.get("usedLineName") == e.target.get('name')) {
//usedEndPoint=2
for (var ss = 0; ss < canvas.getObjects('line').length; ss++) {
var s = canvas.getObjects('line')[ss];
//console.log(s.calcLinePoints())
//console.log(s.calcLinePoints().y2)
var _l = s.left;
var _t = s.top;
if (s.get("name") == currentObj.get("usedLineName")) {
currentObj.set({
'left': (s.calcLinePoints().x2 + _l),
'top': (s.calcLinePoints().y2 + _t)
});
console.log(s.calcLinePoints().y2 + _t)
currentObj.setCoords();
currentObj.line1 && currentObj.line1.set({
'x2': currentObj.left,
'y2': currentObj.top
});
currentObj.line2 && currentObj.line2.set({
'x1': currentObj.left,
'y1': currentObj.top
});
currentObj.line2.setCoords();
currentObj.line1.setCoords();
//move the other circle
canvas.forEachObject(function(obj) {
var _objType = obj.get('type');
if (_objType == "circle" && obj.line2.name == s.get("name")) {
obj.set({
'left': (s.calcLinePoints().x1 + _l),
'top': (s.calcLinePoints().y1 + _t)
});
console.log(s.calcLinePoints().y1 + _t)
obj.setCoords();
obj.line1 && obj.line1.set({
'x2': obj.left,
'y2': obj.top
});
obj.line2 && obj.line2.set({
'x1': obj.left,
'y1': obj.top
});
obj.line2.setCoords();
obj.line1.setCoords();
//canvas.renderAll();
}
});
canvas.renderAll();
//end move oter
}
}
}
}
}
});
});
<script src="http://cdnjs.cloudflare.com/ajax/libs/fabric.js/1.5.0/fabric.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<canvas id="c" width="500" height="500"></canvas>
Here it is the code on jsfiddle, too:
https://jsfiddle.net/muybien/mzsa3z9L/
I want previously to thank you, even only for reading the question.
Thanks of MiltoxBeyond's suggestion, the problem is fixed.
Here it is a working and little cleaned example:
//to save the old cursor position: used on line mooving
var _curX, _curY;
$(function() {
//create the fabriccanvas object & disable the canvas selection
var canvas = new fabric.Canvas('c', {
selection: false
});
//move the objects origin of transformation to the center
fabric.Object.prototype.originX = fabric.Object.prototype.originY = 'center';
function makeCircle(left, top, line1, line2) {
var c = new fabric.Circle({
left: left,
top: top,
strokeWidth: 2,
radius: 6,
fill: '#fff',
stroke: '#666'
});
c.hasControls = c.hasBorders = false;
c.line1 = line1;
c.line2 = line2;
return c;
}
function makeLine(coords, name) {
var l = new fabric.Line(coords, {
stroke: 'red',
strokeWidth: 4,
selectable: true, //false
name: name
});
l.hasControls = l.hasBorders = false;
return l;
}
//initial shape information
var line = makeLine([250, 125, 350, 125], "l1"),
line2 = makeLine([350, 125, 350, 225], "l2"),
line3 = makeLine([350, 225, 250, 225], "l3"),
line4 = makeLine([250, 225, 250, 125], "l4");
canvas.add(line, line2, line3, line4);
canvas.add(
makeCircle(line.get('x1'), line.get('y1'), line4, line), makeCircle(line.get('x2'), line.get('y2'), line, line2), makeCircle(line2.get('x2'), line2.get('y2'), line2, line3), makeCircle(line3.get('x2'), line3.get('y2'), line3, line4)
);
canvas.on('object:selected', function(e) {
//find the selected object type
var objType = e.target.get('type');
if (objType == 'line') {
_curX = e.e.clientX;
_curY = e.e.clientY;
//console.log(_curX);
//console.log(_curY);
}
});
canvas.on('object:moving', function(e) {
//find the moving object type
var p = e.target;
var objType = p.get('type');
if (objType == 'circle') {
p.line1 && p.line1.set({
'x2': p.left,
'y2': p.top
});
p.line2 && p.line2.set({
'x1': p.left,
'y1': p.top
});
//set coordinates for the lines - should be done if element is moved programmely
p.line2.setCoords();
p.line1.setCoords();
canvas.renderAll();
} else if (objType == 'line') {
var _curXm = (_curX - e.e.clientX);
var _curYm = (_curY - e.e.clientY);
//console.log("moved: " + _curXm);
//console.log("moved: " + _curYm);
//loop all circles and if some contains the line - move it
for (var i = 0; i < canvas.getObjects('circle').length; i++) {
var currentObj = canvas.getObjects('circle')[i];
if (currentObj.line1.get("name") == p.get('name') || currentObj.line2.get("name") == p.get('name')) {
currentObj.set({
'left': (currentObj.left - _curXm),
'top': (currentObj.top - _curYm)
});
currentObj.setCoords();
currentObj.line1 && currentObj.line1.set({
'x2': currentObj.left,
'y2': currentObj.top
});
currentObj.line2 && currentObj.line2.set({
'x1': currentObj.left,
'y1': currentObj.top
});
currentObj.line2.setCoords();
currentObj.line1.setCoords();
}
}
_curX = e.e.clientX;
_curY = e.e.clientY;
}
});
});
canvas {
border: 1px solid #808080;
}
<script src="http://cdnjs.cloudflare.com/ajax/libs/fabric.js/1.5.0/fabric.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<canvas id="c" width="500" height="500"></canvas>
I am working no Timbre View Example of Famo.us, and what I am trying to achieve is simply open the page by clicking on strip view options in the app and closing the Menu Drawer as soon as I click on the Strip View option
for achieving this functionality I've read the Broad Cast and Listing from the Famo.us documentation. and wrote the following code in my example.
1) created a function to Broadcasting from an event handler with emit method and called it in Constructor of the Strip View.
Strip View:
define(function(require, exports, module) {
var View = require('famous/core/View');
var Surface = require('famous/core/Surface');
var Transform = require('famous/core/Transform');
var StateModifier = require('famous/modifiers/StateModifier');
var ImageSurface = require('famous/surfaces/ImageSurface');
var HeaderFooter = require('famous/views/HeaderFooterLayout');
var FastClick = require('famous/inputs/FastClick');
var check = true;
Boolean(check);
function StripView() {
View.apply(this, arguments);
_createBackground.call(this);
_createIcon.call(this);
_createTitle.call(this);
_setListenersForStripView.call(this);
}
StripView.prototype = Object.create(View.prototype);
StripView.prototype.constructor = StripView;
StripView.DEFAULT_OPTIONS = {
width: 320,
height: 55,
angle: -0.2,
iconSize: 32,
iconUrl: 'img/strip-icons/famous.png',
title: 'Famo.us',
fontSize: 26,
onload: 'StripView()'
};
function allFunctions()
{
_createBackground();
_createIcon();
_createTitle();
}
function _createBackground() {
this.backgroundSurface = new Surface({
size: [this.options.width, this.options.height],
properties: {
backgroundColor: 'black',
boxShadow: '0 0 1px black'
}
});
var rotateModifier = new StateModifier({
transform: Transform.rotateZ(this.options.angle)
});
var skewModifier = new StateModifier({
transform: Transform.skew(0, 0, this.options.angle)
});
this.add(rotateModifier).add(skewModifier).add(this.backgroundSurface);
// this.backgroundSurface.on("touchend", function(){alert("Click caught")})
}
function _createIcon() {
var iconSurface = new ImageSurface({
size: [this.options.iconSize, this.options.iconSize],
content: this.options.iconUrl,
pointerEvents: 'none'
});
var iconModifier = new StateModifier({
transform: Transform.translate(24, 2, 0)
});
this.add(iconModifier).add(iconSurface);
// iconSurface.on("click", function(){alert("Click caught")})
}
function _createTitle() {
this.titleSurface = new Surface({
size: [true, true],
pointerEvents: 'none',
content: this.options.title,
properties: {
color: 'white',
fontFamily: 'AvenirNextCondensed-DemiBold',
fontSize: this.options.fontSize + 'px',
textTransform: 'uppercase',
// pointerEvents : 'none'
}
});
var titleModifier = new StateModifier({
transform: Transform.thenMove(Transform.rotateZ(this.options.angle), [75, -5, 0])
});
this.add(titleModifier).add(this.titleSurface);
}
function _setListenersForStripView() {
this.backgroundSurface.on('touchend', function() {
this._eventOutput.emit('menuToggleforStripView');
alert('clicked on title');
}.bind(this));
}
module.exports = StripView;
});
2) Then created a Trigger Method in App View
App View:
define(function(require, exports, module) {
var View = require('famous/core/View');
var Surface = require('famous/core/Surface');
var Modifier = require('famous/core/Modifier');
var Transform = require('famous/core/Transform');
var StateModifier = require('famous/modifiers/StateModifier');
var Easing = require('famous/transitions/Easing');
var Transitionable = require('famous/transitions/Transitionable');
var GenericSync = require('famous/inputs/GenericSync');
var MouseSync = require('famous/inputs/MouseSync');
var TouchSync = require('famous/inputs/TouchSync');
GenericSync.register({'mouse': MouseSync, 'touch': TouchSync});
var PageView = require('views/PageView');
var StripView = require('views/StripView');
var MenuView = require('views/MenuView');
var StripData = require('data/StripData');
function AppView() {
View.apply(this, arguments);
this.menuToggle = false;
this.pageViewPos = new Transitionable(0);
this.stripViewPos = new Transitionable(0);
_createPageView.call(this);
_StripView.call(this);
_createMenuView.call(this);
_setListeners.call(this);
_handleSwipe.call(this);
_setListenersForStripView.call(this);
}
AppView.prototype = Object.create(View.prototype);
AppView.prototype.constructor = AppView;
AppView.DEFAULT_OPTIONS = {
openPosition: 276,
transition: {
duration: 300,
curve: 'easeOut'
},
posThreshold: 138,
velThreshold: 0.75
};
function _createPageView() {
this.pageView = new PageView();
this.pageModifier = new Modifier({
transform: function() {
return Transform.translate(this.pageViewPos.get(), 0, 0);
}.bind(this)
});
this._add(this.pageModifier).add(this.pageView);
}
function _StripView() {
this.stripView = new StripView();
this.stripModifier = new Modifier({
transform: function() {
return Transform.translate(this.stripViewPos.get(), 0, 0);
}.bind(this)
});
this._add(this.stripModifier).add(this.stripView);
}
function _createMenuView() {
this.menuView = new MenuView({stripData: StripData});
var menuModifier = new StateModifier({
transform: Transform.behind
});
this.add(menuModifier).add(this.menuView);
}
function _setListeners() {
this.pageView.on('menuToggle', this.toggleMenu.bind(this));
}
function _setListenersForStripView() {
this.stripView.on('menuToggleforStripView', this.toggleMenu.bind(this));
}
function _handleSwipe() {
var sync = new GenericSync(
['mouse', 'touch'],
{direction: GenericSync.DIRECTION_X}
);
this.pageView.pipe(sync);
sync.on('update', function(data) {
var currentPosition = this.pageViewPos.get();
if (currentPosition === 0 && data.velocity > 0) {
this.menuView.animateStrips();
}
this.pageViewPos.set(Math.max(0, currentPosition + data.delta));
}.bind(this));
sync.on('end', (function(data) {
var velocity = data.velocity;
var position = this.pageViewPos.get();
if (this.pageViewPos.get() > this.options.posThreshold) {
if (velocity < -this.options.velThreshold) {
this.slideLeft();
} else {
this.slideRight();
}
} else {
if (velocity > this.options.velThreshold) {
this.slideRight();
} else {
this.slideLeft();
}
}
}).bind(this));
}
AppView.prototype.toggleMenu = function() {
if (this.menuToggle) {
this.slideLeft();
} else {
this.slideRight();
this.menuView.animateStrips();
}
};
AppView.prototype.slideLeft = function() {
this.pageViewPos.set(0, this.options.transition, function() {
this.menuToggle = false;
}.bind(this));
};
AppView.prototype.slideRight = function() {
this.pageViewPos.set(this.options.openPosition, this.options.transition, function() {
this.menuToggle = true;
}.bind(this));
};
module.exports = AppView;
});
now what this code does, is create another strip overlapping the previous strips and it only works on the newly created strip view but not on the other strips which means when it comes back to srip view it loads only the DEFAULT_OPTIONS of strip view because the strip which is being generated newly and overlaping is titled famo.us
Please let me know where I am going wrong and how can I open a new view in my application by closing menu drawer.
Do you have a folder named 'data' with the 'StripData.js' file on your famo.us project?
I'm asking because I downloaded the the Starter Kit and I didn't find that file inside.