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plugin-canvas-2slider-response.js
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plugin-canvas-2slider-response.js
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var jsPsychCanvas2SliderResponse = (function (jspsych) {
'use strict';
const info = {
name: "canvas-2slider-response",
parameters: {
/** The drawing function to apply to the canvas. Should take the canvas object as argument. */
stimulus: {
type: jspsych.ParameterType.FUNCTION,
pretty_name: "Stimulus",
default: undefined,
},
/** Sets the minimum value of the slider. */
min: {
type: jspsych.ParameterType.INT,
pretty_name: "Min slider",
default: 0,
},
/** Sets the maximum value of the slider */
max: {
type: jspsych.ParameterType.INT,
pretty_name: "Max slider",
default: 100,
},
min2: {
type: jspsych.ParameterType.INT,
pretty_name: "Min2 slider",
default: 0,
},
/** Sets the maximum value of the slider */
max2: {
type: jspsych.ParameterType.INT,
pretty_name: "Max2 slider",
default: 100,
},
/** Sets the starting value of the slider */
slider_start: {
type: jspsych.ParameterType.INT,
pretty_name: "Slider starting value",
default: 50,
},
/** Sets the step of the slider */
step: {
type: jspsych.ParameterType.INT,
pretty_name: "Step",
default: 1,
},
/** Array containing the labels for the slider. Labels will be displayed at equidistant locations along the slider. */
labels: {
type: jspsych.ParameterType.HTML_STRING,
pretty_name: "Labels",
default: [],
array: true,
},
/** Width of the slider in pixels. */
slider_width: {
type: jspsych.ParameterType.INT,
pretty_name: "Slider width",
default: null,
},
slider_start: {
type: jspsych.ParameterType.INT,
pretty_name: "Slider starting value",
default: 50,
},
/** Sets the step of the slider */
step2: {
type: jspsych.ParameterType.INT,
pretty_name: "Step2",
default: 1,
},
/** Array containing the labels for the slider. Labels will be displayed at equidistant locations along the slider. */
labels2: {
type: jspsych.ParameterType.HTML_STRING,
pretty_name: "Labels2",
default: [],
array: true,
},
/** Width of the slider in pixels. */
slider_width2: {
type: jspsych.ParameterType.INT,
pretty_name: "Slider width2",
default: null,
},
/** Label of the button to advance. */
button_label: {
type: jspsych.ParameterType.STRING,
pretty_name: "Button label",
default: "Continue",
array: false,
},
/** If true, the participant will have to move the slider before continuing. */
require_movement: {
type: jspsych.ParameterType.BOOL,
pretty_name: "Require movement",
default: false,
},
/** Any content here will be displayed below the slider */
prompt: {
type: jspsych.ParameterType.HTML_STRING,
pretty_name: "Prompt",
default: null,
},
prompt2: {
type: jspsych.ParameterType.HTML_STRING,
pretty_name: "Prompt2",
default: null,
},
/** How long to show the stimulus. */
stimulus_duration: {
type: jspsych.ParameterType.INT,
pretty_name: "Stimulus duration",
default: null,
},
/** How long to show the trial. */
trial_duration: {
type: jspsych.ParameterType.INT,
pretty_name: "Trial duration",
default: null,
},
/** If true, trial will end when user makes a response. */
response_ends_trial: {
type: jspsych.ParameterType.BOOL,
pretty_name: "Response ends trial",
default: true,
},
/** Array containing the height (first value) and width (second value) of the canvas element. */
canvas_size: {
type: jspsych.ParameterType.INT,
array: true,
pretty_name: "Canvas size",
default: [500, 500],
},
slider_number: {
type: jspsych.ParameterType.BOOL,
default: true
},
slider_number2: {
type: jspsych.ParameterType.BOOL,
default: true
}
},
};
/**
* **canvas-2slider-response**
*
* Has two sliders with options for different prompts, labels, mins, maxes
*
* @author Samantha Reisman (adapted from Josh de Leeuw, dynamic slider code adapted from modified from Gorka Navarrete)
* @see {@link https://www.jspsych.org/plugins/jspsych-canvas-slider-response/ canvas-slider-response plugin documentation on jspsych.org}
* @seeTHISplugin {@link https://github.com/samanthareisman/jsPsych-plugins/blob/main/plugin-canvas-2slider-response.js canvas-2slider-response plugin GitHub link}
*/
class Canvas2SliderResponsePlugin {
constructor(jsPsych) {
this.jsPsych = jsPsych;
}
trial(display_element, trial) {
var html = '<div id="jspsych-canvas-2slider-response-wrapper" style="margin: 100px 0px;">';
html +=
'<div id="jspsych-canvas-2slider-response-stimulus">' +
'<canvas id="jspsych-canvas-stimulus" height="' +
trial.canvas_size[0] +
'" width="' +
trial.canvas_size[1] +
'"></canvas>' +
"</div>";
html +=
'<div class="jspsych-canvas-2slider-response-container" style="position:relative; margin: 0 auto 3em auto; width:';
if (trial.slider_width !== null) {
html += trial.slider_width + "px;";
}
else {
html += trial.canvas_size[1] + "px;";
}
html += '">';
html += '<input type="range" value="'+trial.slider_start+'" min="'+trial.min+'" max="'+trial.max+'" step="'+trial.step+'" style="width: 100%;" id="jspsych-canvas-2slider-response-response" oninput="document.getElementById("output").value = this.value"></input>';
if(trial.slider_number){
html +=
'<div style="font-weight: bold; vertical-align: top; width: 110%; text-align: right; position: relative; top: -30px; z-index: -1;"><output id = "output">50</output></div>';
}
// html += "<div>";
for (var j = 0; j < trial.labels.length; j++) {
var width = 100 / (trial.labels.length - 1);
var left_offset = j * (100 / (trial.labels.length - 1)) - width / 2;
html +=
'<div style="display: inline-block; position: absolute; left:' +
left_offset +
"%; text-align: center; width: " +
width +
'%;">';
html += '<span style="text-align: center; font-size: 80%;">' + trial.labels[j] + "</span>";
html += "</div>";
}
if (trial.prompt !== null) {
html += trial.prompt;
}
html += "</div>";
html += "</div>";
// add second slider
html +=
'<div class="jspsych-canvas-2slider-response-container" style="position:relative; margin: 0 auto 3em auto; width:';
if (trial.slider_width2 !== null) {
html += trial.slider_width2 + "px;";
}
else {
html += trial.canvas_size[1] + "px;";
}
html += '">';
html += '<input type="range" value="'+trial.slider_start+'" min="'+trial.min+'" max="'+trial.max+'" step="'+trial.step+'" style="width: 100%;" id="jspsych-canvas-2slider-response-response2" oninput="document.getElementById("output2").value = this.value"></input>';
if(trial.slider_number2){
html +=
'<div style="font-weight: bold; vertical-align: top; width: 110%; text-align: right; position: relative; top: -50px; z-index: -1;"><output id = "output2">50</output></div>';
}
html += "<div>";
for (var j = 0; j < trial.labels2.length; j++) {
var width = 100 / (trial.labels2.length - 1);
var left_offset = j * (100 / (trial.labels2.length - 1)) - width / 2;
html +=
'<div style="display: inline-block; position: absolute; left:' +
left_offset +
"%; text-align: center; width: " +
width +
'%;">';
html += '<span style="text-align: center; font-size: 80%;">' + trial.labels2[j] + "</span>";
html += "</div>";
}
if (trial.prompt2 !== null) {
html += trial.prompt2
}
html += "</div>";
html += "</div>";
// add submit button
html +=
'<button id="jspsych-canvas-2slider-response-next" class="jspsych-btn" ' +
(trial.require_movement ? "disabled" : "") +
">" +
trial.button_label +
"</button>";
display_element.innerHTML = html;
// draw
let c = document.getElementById("jspsych-canvas-stimulus");
trial.stimulus(c);
var response = {
rt: null,
response: null,
response2: null
};
const end_trial = () => {
this.jsPsych.pluginAPI.clearAllTimeouts();
// save data
var trialdata = {
rt: response.rt,
response: response.response,
response2: response.response2,
slider_start: trial.slider_start,
};
display_element.innerHTML = "";
// next trial
this.jsPsych.finishTrial(trialdata);
};
if (trial.require_movement) {
const enable_button = () => {
display_element.querySelector("#jspsych-canvas-2slider-response-next").disabled = false;
};
display_element
.querySelector("#jspsych-canvas-2slider-response-response")
.addEventListener("mousedown", enable_button);
display_element
.querySelector("#jspsych-canvas-2slider-response-response")
.addEventListener("touchstart", enable_button);
display_element
.querySelector("#jspsych-canvas-2slider-response-response")
.addEventListener("change", enable_button);
display_element
.querySelector("#jspsych-canvas-2slider-response-response2")
.addEventListener("mousedown", enable_button);
display_element
.querySelector("#jspsych-canvas-2slider-response-response2")
.addEventListener("touchstart", enable_button);
display_element
.querySelector("#jspsych-canvas-2slider-response-response2")
.addEventListener("change", enable_button);
}
display_element
.querySelector("#jspsych-canvas-2slider-response-next")
.addEventListener("click", () => {
// measure response time
var endTime = performance.now();
response.rt = Math.round(endTime - startTime);
response.response = display_element.querySelector("#jspsych-canvas-2slider-response-response").valueAsNumber;
response.response2 = display_element.querySelector("#jspsych-canvas-2slider-response-response2").valueAsNumber;
if (trial.response_ends_trial) {
end_trial();
}
else {
display_element.querySelector("#jspsych-canvas-2slider-response-next").disabled = true;
}
});
if (trial.stimulus_duration !== null) {
this.jsPsych.pluginAPI.setTimeout(() => {
display_element.querySelector("#jspsych-canvas-2slider-response-stimulus").style.visibility = "hidden";
}, trial.stimulus_duration);
}
// end trial if trial_duration is set
if (trial.trial_duration !== null) {
this.jsPsych.pluginAPI.setTimeout(end_trial, trial.trial_duration);
}
var startTime = performance.now();
}
}
Canvas2SliderResponsePlugin.info = info;
return Canvas2SliderResponsePlugin;
})(jsPsychModule);