Is it possible to click on the chart and drag around like tradingview panning ?
Right now its creating rectangle only.
const chart = lightningChart().ChartXY()
// Method for adding OHLCSeries takes one argument: seriesConstructor.
const ohlcSeries = chart.addOHLCSeries(
// Specify type of figure used
{ seriesConstructor: OHLCFigures.Candlestick }
)
You can pan the chart with right click of the mouse. Right now it's not possible to switch the panning of the chart to left click but we are planning to implement a solution to remap the mouse/touch interactions in future.
You can also remove an axis from the panning interaction by calling axis.setChartInteractionPanByDrag(false).
EDIT:
With the new v3.0.0 release, ChartXY mouse interaction buttons can now be explicitly configured. For example, changing panning to left mouse button, and rectangle zoom/fit to right mouse button:
const lcjs = lightningChart({
overrideInteractionMouseButtons: {
chartXYPanMouseButton: 0,
chartXYRectangleZoomFitMouseButton: 2,
},
})
const chart = lcjs.ChartXY()
Related
enter image description hereWhat if we could simulate 6dof control on the Oculus Go controller? Imagine that we turn the controller 3d model into a hand, it still just rotates, but imagine that we use the touchpad to move the hand foward, left, right, or backwards in space, the touch pad gives you movement along a z and x axis in space, but the accelerometer/gyro gives you a y and x axis. so the accelerometer/gyro serves as the arm, and the touch pad serves as the hand/wrist, a hand that can move forward and back and only twist left and right, and grip with the trigger, the hand can't tilt up or down but the arm can make up for that. So how do I build this?
There is https://www.npmjs.com/package/aframe-thumb-controls-component that provides events for pressing thumbpad in directions (e.g., thumbupstart, thumbleftend).
Write a component that listens to those events, sets a property (e.g., this.buttons.left = true, then the tick handler needs to update the this.el.object3D.position based on which buttons are held down.
Also need to take into consideration the direction the camera is facing. https://github.com/aframevr/aframe/blob/master/src/components/wasd-controls.js is a good starting point is it is similar, where it listens to key downs and translates position. Just need to modify to use thumb-controls instead.
More hints:
<script src="https://unpkg.com/aframe-thumb-controls-component#1.1.0/dist/aframe-thumb-controls-component.min.js">
AFRAME.registerComponent('thumb-movement-controls', {
init: function () {
this.buttons = {
left: false, right: false, up: false, down: false
};
this.el.addEventListener('thumbleftstart', () => {
this.buttons.left = true;
});
this.el.addEventListener('thumbleftend', () => {
this.buttons.left = false;
});
},
tick: function () {
// Really simplified movement. Does not take into account camera heading or velocity / time, but wasd-controls shows how.
if (this.buttons.left) {
this.el.position.x -= 0.001;
}
}
});
<a-entity daydream-controls thumb-controls thumb-movement-controls></a-entity>
I want to have an interactive legend inside my canvas, however I'm having trouble getting it to work. I am using qwt6.1.2 and this version no longer has the option to insert the legend as an "ExternalLegend", but instead has the class qwtPlotLegendItem to handle legends inside the canvas. However when I read the docs I see:
In opposite to QwtLegend the legend item is not interactive.
An external QwtLegend with a transparent background on top the plot
canvas might be another option with a similar effect.
My question is: how do I show an QwtLegend on top of the plot canvas?
In the documentation for QwtPlot I read:
Legends, that are not inserted into the layout of the plot widget need
to connect to the legendDataChanged() signal. Calling updateLegend()
initiates this signal for an initial update.
I have connected the legendDataChanged signal and triggered it by calling updateLegend(), but now I'm stuck on what to do next. Any tips on how to proceed?
Ok I got it to work:
QwtPlot* plot;
// Attach some plots/histograms to the plot.
MyLegend* legend = new MyLegend(plot);
MyLegend ::MyLegend (QwtPlot * pPlot)
: m_pPlot(pPlot)
{
setParent(m_pPlot);
setGeometry(0, 0, 100, 100);
connect(m_pPlot, &QwtPlot::legendDataChanged,
this, &MyLegend ::LegendDataChanged);
m_pPlot->updateLegend();
}
void MyLegend ::LegendDataChanged(const QVariant &itemInfo, const QList< QwtLegendData > &data)
{
updateLegend(itemInfo, data);
}
Currently I have a project that is being used to draw rooms with lines and images that can be selected by the user by hitting a button representing what they want to add. I.E. if they want a shower a button for shower is pressed and an image appears in a pane. The shower can be resized and moved in the pane. The user also has the ability to use lines to draw objects or walls. The lines can be resized, rotated, or moved. I am now trying to get these objects to interact with each other. Say a user is using lines to make an object, and when the line comes near another object the line being moved snaps to the other object. I have found a 3rd party library that has SnapLineSnapResult but I don't see anything where someone has used it. Is this something that is desktop JavaFX usable, or is it a touch operation and does anyone have code to model or another solution?
SnapLineSnapResult
My code for line that would be useful if I can use this class is as follows:
line.setOnMouseDragged((MouseEvent event1) -> {
// in resize region
if (isInResizeZoneLine(line, event1)) {
// adjust line
line.setEndX(event1.getX());
}
// in movable region
else {
Point2D currentPointer = new Point2D(event1.getX(), event1.getY());
if (bound.getBoundsInLocal().contains(currentPointer)) {
/*--------*/ // potential place for if (near other object to be snapped)
double lineWidth = line.getEndX() - line.getStartX();
line.setStartY(currentPointer.getY());
line.setEndY(currentPointer.getY());
line.setStartX(currentPointer.getX() - lineWidth/2);
line.setEndX(currentPointer.getX() + lineWidth/2);
}
}
});
I am using HighCharts in my ASP.Net MVC application using JQuery.
I have managed to show a tooltip with crosshair vertical bar on mouse move. However, I do not want to hide this toolop + bar even if user moves the mouse out of chart. Is there any option available in Highcharts to achieve this?
I searched forums but could not find any working example. One of those solutions is related to cloning tooltip on click event.
You can wrap the Highcharts.Tooltip.prototype.hide by an empty (no-op) function as follows
(function (H) {
H.wrap(H.Tooltip.prototype, 'hide', function (defaultCallback) {
/*
░░░░░▄▄▄▄▀▀▀▀▀▀▀▀▄▄▄▄▄▄░░░░░░░
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░░░░░░░░░░░░░░▀▄▄▄▄▄░░░░░░░░█░░
*/
});
}(Highcharts));
Highcharts/Highstock tooltip always visible # JsFiddle
For the minimalists,
(function (H) {
H.wrap(H.Tooltip.prototype, 'hide', function () {});
}(Highcharts));
does the job too ;)
Read More # Customizing Highcharts - Tooltip Visibility
I've been having trouble creating a mechanism to allow the user to select a span of time from a timeline. Basically i want them to be able to click and drag horizontally, and retrieve the start and end positions of that event.
I especially need to include the case where the event goes off the edge of the screen (even if the end position is snapped to the edge of the screen that's fine).
While doing all of this, I want to be able to draw a box that goes from the start of the event to the current position of the mouse, so that it's obvious which area if being selected.
Basically, it doesn't seem to me that you're dragging something. You just have a sequence of press, move and release. You will have to click on something, I bet you could consider the press event on the timeline itself. So it'll be something like:
timeline.addEventListener(MouseEvent.MOUSE_DOWN, onMouseDown);
timeline.addEventListener(MouseEvent.MOUSE_UP, onMouseUp);
// the next line just considers that leaving the object surface is the same as depressing the mouse button
timeline.addEventListener(MouseEvent.MOUSE_OUT, onMouseUp);
function onMouseDown(evt:MouseEvent):void {
// add the event listener for the mouse move action
timeline.addEventListener(MouseEvent.MOUSE_MOVE, onMouseMove);
// create the movie clip for the box
// you get the mouse coordinates from evt.localX and evt.localY (relative to the origin of the timeline movieclip) or evt.stageX and evt.stageY (as global values)
}
function onMouseMove(evt:MouseEvent):void {
// adjust the selection width and height
// you get the mouse coordinates from evt.localX and evt.localY (relative to the origin of the timeline movieclip) or evt.stageX and evt.stageY (as global values)
}
function onMouseUp(evt:MouseEvent):void {
// remove the event listener for the mouse move, that means that the function onMouseMove will no longer be called
timeline.removeEventListener(MouseEvent.MOUSE_MOVE, onMouseMove);
// brush up and send the final coordinates of the selection to the next function
}
For the selection graphics itself, you can either use an instance of a movie clip from your library, or you could simply create an empty movie clip, make it semitransparent and draw a rectangle in it, like so:
var selection:MovieClip = new MovieClip();
selection.alpha = 0.5;
selection.graphics.beginFill(0x000000);
selection.graphics.drawRect(x,y,width,height);
selection.graphics.endFill();
this.addChild(selection);