var HEIGHT_RATIO = 0.6;
var DIM_CATEGORY_INDEX = 0;
var DIM_TIME_ARRIVAL = 1;
var DIM_TIME_DEPARTURE = 2;
var DATA_ZOOM_AUTO_MOVE_THROTTLE = 30;
var DATA_ZOOM_X_INSIDE_INDEX = 1;
var DATA_ZOOM_Y_INSIDE_INDEX = 3;
var DATA_ZOOM_AUTO_MOVE_SPEED = 0.2;
var DATA_ZOOM_AUTO_MOVE_DETECT_AREA_WIDTH = 30;
var _draggable;
var _draggingEl;
var _dropShadow;
var _draggingCursorOffset = [0, 0];
var _draggingTimeLength;
var _draggingRecord;
var _dropRecord;
var _cartesianXBounds = [];
var _cartesianYBounds = [];
var _rawData;
var _autoDataZoomAnimator;
$.get('data/asset/data/airport-schedule.json', function (rawData) {
_rawData = rawData;
myChart.setOption(option = makeOption());
initDrag();
});
function makeOption() {
return {
tooltip: {
},
animation: false,
toolbox: {
left: 20,
top: 0,
itemSize: 20,
feature: {
myDrag: {
show: true,
title: 'Make bars\ndraggable',
icon: 'path://M990.55 380.08 q11.69 0 19.88 8.19 q7.02 7.01 7.02 18.71 l0 480.65 q-1.17 43.27 -29.83 71.93 q-28.65 28.65 -71.92 29.82 l-813.96 0 q-43.27 -1.17 -72.5 -30.41 q-28.07 -28.07 -29.24 -71.34 l0 -785.89 q1.17 -43.27 29.24 -72.5 q29.23 -29.24 72.5 -29.24 l522.76 0 q11.7 0 18.71 7.02 q8.19 8.18 8.19 18.71 q0 11.69 -7.6 19.29 q-7.6 7.61 -19.3 7.61 l-518.08 0 q-22.22 1.17 -37.42 16.37 q-15.2 15.2 -15.2 37.42 l0 775.37 q0 23.39 15.2 38.59 q15.2 15.2 37.42 15.2 l804.6 0 q22.22 0 37.43 -15.2 q15.2 -15.2 16.37 -38.59 l0 -474.81 q0 -11.7 7.02 -18.71 q8.18 -8.19 18.71 -8.19 l0 0 ZM493.52 723.91 l-170.74 -170.75 l509.89 -509.89 q23.39 -23.39 56.13 -21.05 q32.75 1.17 59.65 26.9 l47.94 47.95 q25.73 26.89 27.49 59.64 q1.75 32.75 -21.64 57.3 l-508.72 509.9 l0 0 ZM870.09 80.69 l-56.13 56.14 l94.72 95.9 l56.14 -57.31 q8.19 -9.35 8.19 -21.05 q-1.17 -12.86 -10.53 -22.22 l-47.95 -49.12 q-10.52 -9.35 -23.39 -9.35 q-11.69 -1.17 -21.05 7.01 l0 0 ZM867.75 272.49 l-93.56 -95.9 l-380.08 380.08 l94.73 94.73 l378.91 -378.91 l0 0 ZM322.78 553.16 l38.59 39.77 l-33.92 125.13 l125.14 -33.92 l38.59 38.6 l-191.79 52.62 q-5.85 1.17 -12.28 0 q-6.44 -1.17 -11.11 -5.84 q-4.68 -4.68 -5.85 -11.7 q-2.34 -5.85 0 -11.69 l52.63 -192.97 l0 0 Z',
onclick: onDragSwitchClick
}
}
},
title: {
text: 'Gantt of Airport Flight',
left: 'center'
},
dataZoom: [{
type: 'slider',
xAxisIndex: 0,
filterMode: 'weakFilter',
height: 20,
bottom: 0,
start: 0,
end: 26,
handleIcon: 'M10.7,11.9H9.3c-4.9,0.3-8.8,4.4-8.8,9.4c0,5,3.9,9.1,8.8,9.4h1.3c4.9-0.3,8.8-4.4,8.8-9.4C19.5,16.3,15.6,12.2,10.7,11.9z M13.3,24.4H6.7V23h6.6V24.4z M13.3,19.6H6.7v-1.4h6.6V19.6z',
handleSize: '80%',
showDetail: false
}, {
type: 'inside',
id: 'insideX',
xAxisIndex: 0,
filterMode: 'weakFilter',
start: 0,
end: 26,
zoomOnMouseWheel: false,
moveOnMouseMove: true
}, {
type: 'slider',
yAxisIndex: 0,
zoomLock: true,
width: 10,
right: 10,
top: 70,
bottom: 20,
start: 95,
end: 100,
handleSize: 0,
showDetail: false,
}, {
type: 'inside',
id: 'insideY',
yAxisIndex: 0,
start: 95,
end: 100,
zoomOnMouseWheel: false,
moveOnMouseMove: true,
moveOnMouseWheel: true
}],
grid: {
show: true,
top: 70,
bottom: 20,
left: 100,
right: 20,
backgroundColor: '#fff',
borderWidth: 0
},
xAxis: {
type: 'time',
position: 'top',
splitLine: {
lineStyle: {
color: ['#E9EDFF']
}
},
axisLine: {
show: false
},
axisTick: {
lineStyle: {
color: '#929ABA'
}
},
axisLabel: {
color: '#929ABA',
inside: false,
align: 'center'
}
},
yAxis: {
axisTick: {show: false},
splitLine: {show: false},
axisLine: {show: false},
axisLabel: {show: false},
min: 0,
max: _rawData.parkingApron.data.length
},
series: [{
id: 'flightData',
type: 'custom',
renderItem: renderGanttItem,
dimensions: _rawData.flight.dimensions,
encode: {
x: [DIM_TIME_ARRIVAL, DIM_TIME_DEPARTURE],
y: DIM_CATEGORY_INDEX,
tooltip: [DIM_CATEGORY_INDEX, DIM_TIME_ARRIVAL, DIM_TIME_DEPARTURE]
},
data: _rawData.flight.data
}, {
type: 'custom',
renderItem: renderAxisLabelItem,
dimensions: _rawData.parkingApron.dimensions,
encode: {
x: -1, // Then this series will not controlled by x.
y: 0
},
data: echarts.util.map(_rawData.parkingApron.data, function (item, index) {
return [index].concat(item);
})
}]
};
}
function renderGanttItem(params, api) {
var categoryIndex = api.value(DIM_CATEGORY_INDEX);
var timeArrival = api.coord([api.value(DIM_TIME_ARRIVAL), categoryIndex]);
var timeDeparture = api.coord([api.value(DIM_TIME_DEPARTURE), categoryIndex]);
var coordSys = params.coordSys;
_cartesianXBounds[0] = coordSys.x;
_cartesianXBounds[1] = coordSys.x + coordSys.width;
_cartesianYBounds[0] = coordSys.y;
_cartesianYBounds[1] = coordSys.y + coordSys.height;
var barLength = timeDeparture[0] - timeArrival[0];
// Get the heigth corresponds to length 1 on y axis.
var barHeight = api.size([0, 1])[1] * HEIGHT_RATIO;
var x = timeArrival[0];
var y = timeArrival[1] - barHeight;
var flightNumber = api.value(3) + '';
var flightNumberWidth = echarts.format.getTextRect(flightNumber).width;
var text = (barLength > flightNumberWidth + 40 && x + barLength >= 180)
? flightNumber : '';
var rectNormal = clipRectByRect(params, {
x: x, y: y, width: barLength, height: barHeight
});
var rectVIP = clipRectByRect(params, {
x: x, y: y, width: (barLength) / 2, height: barHeight
});
var rectText = clipRectByRect(params, {
x: x, y: y, width: barLength, height: barHeight
});
return {
type: 'group',
children: [{
type: 'rect',
ignore: !rectNormal,
shape: rectNormal,
style: api.style()
}, {
type: 'rect',
ignore: !rectVIP && !api.value(4),
shape: rectVIP,
style: api.style({fill: '#ddb30b'})
}, {
type: 'rect',
ignore: !rectText,
shape: rectText,
style: api.style({
fill: 'transparent',
stroke: 'transparent',
text: text,
textFill: '#fff'
})
}]
};
}
function renderAxisLabelItem(params, api) {
var y = api.coord([0, api.value(0)])[1];
if (y < params.coordSys.y + 5) {
return;
}
return {
type: 'group',
position: [
10,
y
],
children: [{
type: 'path',
shape: {
d: 'M0,0 L0,-20 L30,-20 C42,-20 38,-1 50,-1 L70,-1 L70,0 Z',
x: 0,
y: -20,
width: 90,
height: 20,
layout: 'cover'
},
style: {
fill: '#368c6c'
}
}, {
type: 'text',
style: {
x: 24,
y: -3,
text: api.value(1),
textVerticalAlign: 'bottom',
textAlign: 'center',
textFill: '#fff'
}
}, {
type: 'text',
style: {
x: 75,
y: -2,
textVerticalAlign: 'bottom',
textAlign: 'center',
text: api.value(2),
textFill: '#000'
}
}]
};
}
function clipRectByRect(params, rect) {
return echarts.graphic.clipRectByRect(rect, {
x: params.coordSys.x,
y: params.coordSys.y,
width: params.coordSys.width,
height: params.coordSys.height
});
}
// -------------
// Enable Drag
// -------------
function onDragSwitchClick(model, api, type) {
_draggable = !_draggable;
myChart.setOption({
dataZoom: [{
id: 'insideX',
disabled: _draggable
}, {
id: 'insideY',
disabled: _draggable
}]
});
this.model.setIconStatus(type, _draggable ? 'emphasis' : 'normal');
}
function initDrag() {
_autoDataZoomAnimator = makeAnimator(dispatchDataZoom);
myChart.on('mousedown', function (param) {
if (!_draggable || !param || param.seriesIndex == null) {
return;
}
// Drag start
_draggingRecord = {
dataIndex: param.dataIndex,
categoryIndex: param.value[DIM_CATEGORY_INDEX],
timeArrival: param.value[DIM_TIME_ARRIVAL],
timeDeparture: param.value[DIM_TIME_DEPARTURE]
};
var style = {lineWidth: 2, fill: 'rgba(255,0,0,0.1)', stroke: 'rgba(255,0,0,0.8)', lineDash: [6, 3]};
_draggingEl = addOrUpdateBar(_draggingEl, _draggingRecord, style, 100);
_draggingCursorOffset = [
_draggingEl.position[0] - param.event.offsetX,
_draggingEl.position[1] - param.event.offsetY
];
_draggingTimeLength = _draggingRecord.timeDeparture - _draggingRecord.timeArrival;
});
myChart.getZr().on('mousemove', function (event) {
if (!_draggingEl) {
return;
}
var cursorX = event.offsetX;
var cursorY = event.offsetY;
// Move _draggingEl.
_draggingEl.attr('position', [
_draggingCursorOffset[0] + cursorX,
_draggingCursorOffset[1] + cursorY,
]);
prepareDrop();
autoDataZoomWhenDraggingOutside(cursorX, cursorY);
});
myChart.getZr().on('mouseup', function () {
// Drop
if (_draggingEl && _dropRecord) {
updateRawData() && myChart.setOption({
series: {
id: 'flightData',
data: _rawData.flight.data
}
});
}
dragRelease();
});
myChart.getZr().on('globalout', dragRelease);
function dragRelease() {
_autoDataZoomAnimator.stop();
if (_draggingEl) {
myChart.getZr().remove(_draggingEl);
_draggingEl = null;
}
if (_dropShadow) {
myChart.getZr().remove(_dropShadow);
_dropShadow = null;
}
_dropRecord = _draggingRecord = null;
}
function addOrUpdateBar(el, itemData, style, z) {
var pointArrival = myChart.convertToPixel('grid', [itemData.timeArrival, itemData.categoryIndex]);
var pointDeparture = myChart.convertToPixel('grid', [itemData.timeDeparture, itemData.categoryIndex]);
var barLength = pointDeparture[0] - pointArrival[0];
var barHeight = Math.abs(
myChart.convertToPixel('grid', [0, 0])[1] - myChart.convertToPixel('grid', [0, 1])[1]
) * HEIGHT_RATIO;
if (!el) {
el = new echarts.graphic.Rect({
shape: {x: 0, y: 0, width: 0, height: 0},
style: style,
z: z
});
myChart.getZr().add(el);
}
el.attr({
shape: {x: 0, y: 0, width: barLength, height: barHeight},
position: [pointArrival[0], pointArrival[1] - barHeight]
});
return el;
}
function prepareDrop() {
// Check droppable place.
var xPixel = _draggingEl.shape.x + _draggingEl.position[0];
var yPixel = _draggingEl.shape.y + _draggingEl.position[1];
var cursorData = myChart.convertFromPixel('grid', [xPixel, yPixel]);
if (cursorData) {
// Make drop shadow and _dropRecord
_dropRecord = {
categoryIndex: Math.floor(cursorData[1]),
timeArrival: cursorData[0],
timeDeparture: cursorData[0] + _draggingTimeLength
};
var style = {fill: 'rgba(0,0,0,0.4)'};
_dropShadow = addOrUpdateBar(_dropShadow, _dropRecord, style, 99);
}
}
// This is some business logic, don't care about it.
function updateRawData() {
var flightData = _rawData.flight.data;
var movingItem = flightData[_draggingRecord.dataIndex];
// Check conflict
for (var i = 0; i < flightData.length; i++) {
var dataItem = flightData[i];
if (dataItem !== movingItem
&& _dropRecord.categoryIndex === dataItem[DIM_CATEGORY_INDEX]
&& _dropRecord.timeArrival < dataItem[DIM_TIME_DEPARTURE]
&& _dropRecord.timeDeparture > dataItem[DIM_TIME_ARRIVAL]
) {
alert('Conflict! Find a free space to settle the bar!');
return;
}
}
// No conflict.
movingItem[DIM_CATEGORY_INDEX] = _dropRecord.categoryIndex;
movingItem[DIM_TIME_ARRIVAL] = _dropRecord.timeArrival;
movingItem[DIM_TIME_DEPARTURE] = _dropRecord.timeDeparture;
return true;
}
function autoDataZoomWhenDraggingOutside(cursorX, cursorY) {
// When cursor is outside the cartesian and being dragging,
// auto move the dataZooms.
var cursorDistX = getCursorCartesianDist(cursorX, _cartesianXBounds);
var cursorDistY = getCursorCartesianDist(cursorY, _cartesianYBounds);
if (cursorDistX !== 0 || cursorDistY !== 0) {
_autoDataZoomAnimator.start({
cursorDistX: cursorDistX,
cursorDistY: cursorDistY
});
}
else {
_autoDataZoomAnimator.stop();
}
}
function dispatchDataZoom(params) {
var option = myChart.getOption();
var optionInsideX = option.dataZoom[DATA_ZOOM_X_INSIDE_INDEX];
var optionInsideY = option.dataZoom[DATA_ZOOM_Y_INSIDE_INDEX];
var batch = [];
prepareBatch(batch, 'insideX', optionInsideX.start, optionInsideX.end, params.cursorDistX);
prepareBatch(batch, 'insideY', optionInsideY.start, optionInsideY.end, -params.cursorDistY);
batch.length && myChart.dispatchAction({
type: 'dataZoom',
batch: batch
});
function prepareBatch(batch, id, start, end, cursorDist) {
if (cursorDist === 0) {
return;
}
var sign = cursorDist / Math.abs(cursorDist);
var size = end - start;
var delta = DATA_ZOOM_AUTO_MOVE_SPEED * sign;
start += delta;
end += delta;
if (end > 100) {
end = 100;
start = end - size;
}
if (start < 0) {
start = 0;
end = start + size;
}
batch.push({
dataZoomId: id,
start: start,
end: end
});
}
}
function getCursorCartesianDist(cursorXY, bounds) {
var dist0 = cursorXY - (bounds[0] + DATA_ZOOM_AUTO_MOVE_DETECT_AREA_WIDTH);
var dist1 = cursorXY - (bounds[1] - DATA_ZOOM_AUTO_MOVE_DETECT_AREA_WIDTH);
return dist0 * dist1 <= 0
? 0 // cursor is in cartesian
: dist0 < 0
? dist0 // cursor is at left/top of cartesian
: dist1; // cursor is at right/bottom of cartesian
}
function makeAnimator(callback) {
var requestId;
var callbackParams;
// Use throttle to prevent from calling dispatchAction frequently.
callback = echarts.throttle(callback, DATA_ZOOM_AUTO_MOVE_THROTTLE);
function onFrame() {
callback(callbackParams);
requestId = requestAnimationFrame(onFrame);
}
return {
start: function (params) {
callbackParams = params;
if (requestId == null) {
onFrame();
}
},
stop: function () {
if (requestId != null) {
cancelAnimationFrame(requestId);
}
requestId = callbackParams = null;
}
};
}
}
