Initial commit
This commit is contained in:
Joel Collins
commit
95e10b14dc
5 changed files with 627 additions and 0 deletions
376
static/main.js
Normal file
376
static/main.js
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var apiVersion = "v1"
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var hostName
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var hostPort
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var baseURI
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// Key IDs
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var pgupKeyID = 33;
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var pgdnKeyID = 34;
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var leftKeyID = 37;
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var upKeyID = 38;
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var rightKeyID = 39;
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var downKeyID = 40;
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var enterKeyID = 13;
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var escKeyID = 27;
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var keysDown = {}; //Array of keys down
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var stageVelocity = 50;
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var focusVelocity = 20;
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var requestLock = false;
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// Microscope client-side callibration
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//TODO: Move to serverside microscope property
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var fovX = 4100;
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var fovY = 3146;
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window.onload = function() {
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setHostFromInput()
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getStagePositions()
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updateTextBoxes()
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getCaptures()
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}
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// Cosmetic methods
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function toggleClassToDiv(div_id, class_name) {
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document.getElementById(div_id).classList.toggle(class_name)
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}
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// Setup methods
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function setHostFromInput() {
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hostName = document.getElementById('microscopeHostInput').value;
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hostPort = document.getElementById('microscopePortInput').value;
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baseURI = `http://${hostName}:${hostPort}/api/${apiVersion}`
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streamContent = `<img src="${baseURI}/stream" ondblclick="clickHotspotImage(event);">`
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document.getElementById("streambox").innerHTML = streamContent;
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}
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// Microscope methods
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function deleteCapture(capture_id) {
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function deleteCaptureCallback(response, status) {
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console.log(status);
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getCaptures();
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}
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var r = confirm("Warning! This will delete all copies of this capture from the Raspberry Pi. Click OK to proceed.");
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if (r == true) {
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safeRequest("DELETE", baseURI+"/camera/capture/"+capture_id+"/", null, deleteCaptureCallback, false)
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}
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}
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function deleteAllCaptures() {
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function deleteAllCapturesCallback(response, status) {
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console.log(status);
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getCaptures();
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}
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var r = confirm("Warning! This will delete all copies of all captures from the Raspberry Pi. Click OK to proceed.");
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if (r == true) {
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safeRequest("DELETE", baseURI+"/camera/capture/", null, deleteAllCapturesCallback, false)
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}
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}
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function getCaptures() {
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function updateCapturesCallback(response, status) {
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console.log(status);
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updateCaptureList(response);
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}
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safeRequest("GET", baseURI+"/camera/capture", null, updateCapturesCallback, false)
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}
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function updateCaptureList(response) {
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// Clear captures list
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var capturesNode = document.getElementById("captures");
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while (capturesNode.firstChild) {
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capturesNode.removeChild(capturesNode.firstChild);
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}
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// For each capture in the response array
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response.forEach(function(element) {
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// Store the capture object URI
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element_uri = `${baseURI}/camera/capture/${element.metadata.id}`
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// Generate inner HTML from capture object
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html = `
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<div class="capture-thumb"><img src="${element_uri}/download?thumbnail=true"></div>
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<div class="capture-actions">
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<div class='capture-heading'>${element.metadata.filename}</div>
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<br>
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<button type="button" class="capture-button" onclick="window.open('${element_uri}/download');">Image</button>
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<button type="button" class="capture-button" onclick="window.open('${element_uri}/metadata');">Metadata</button>
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<br>
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<button type="button" class="capture-button" onclick="window.open('${element_uri}/', '_blank');">JSON</button>
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<button type="button" class="capture-button" onclick="deleteCapture('${element.metadata.id}');">Delete</button>
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<br>
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</div>
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`
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// Create a new capture div, and append HTML
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var div = document.createElement("div");
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div.className = "capture";
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div.innerHTML = html;
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capturesNode.appendChild(div);
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});
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}
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function updateTextBoxes() {
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document.getElementById('stageVelocityText').value = stageVelocity;
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document.getElementById('stageVelocityInput').value = stageVelocity;
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document.getElementById('focusVelocityText').value = focusVelocity;
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document.getElementById('focusVelocityInput').value = focusVelocity;
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document.getElementById('fovXText').value = fovX;
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document.getElementById('fovYText').value = fovY;
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}
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function updateStagePositions(response) {
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document.getElementById('x_abs').value = response.x;
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document.getElementById('y_abs').value = response.y;
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document.getElementById('z_abs').value = response.z;
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}
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function getStagePositions() {
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function updatePositionCallback(response, status) {
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console.log(status, response);
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updateStagePositions(response);
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}
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safeRequest("GET", baseURI+"/stage/position", null, updatePositionCallback, false)
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}
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// Capture methods
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function newCapture(filename, keep_on_disk, use_video_port, bayer, resizeWidth=null, resizeHeight=null) {
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// Make a position request
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function newCaptureCallback(response, status) {
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if (status != 200) {
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alert("Capture failed.");
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}
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console.log(status, response);
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getCaptures(); // Update full list of captures when done
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}
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payload = {
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"filename": filename,
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"keep_on_disk": keep_on_disk,
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"use_video_port": use_video_port,
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"bayer": bayer
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}
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if ((resizeWidth) && (resizeHeight)) {
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payload.size = {
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"width": resizeWidth,
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"height": resizeHeight
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}
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}
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console.log(payload);
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safeRequest("POST", baseURI+"/camera/capture/", payload, newCaptureCallback);
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}
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function newCaptureFromInput() {
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captureFilenameInput = document.getElementById('captureFilenameInput');
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captureKeepOnDiskCheck = document.getElementById('captureKeepOnDiskCheck');
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captureFullResolutionCheck = document.getElementById('captureFullResolutionCheck');
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captureBayerCheck = document.getElementById('captureBayerCheck')
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captureResizeCheck = document.getElementById('captureResizeCheck');
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captureWidthInput = document.getElementById('captureWidthInput')
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captureHeightInput = document.getElementById('captureHeightInput')
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// Get filename if one is given
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if (captureFilenameInput.value === "") {
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filename = null;
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}
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else {
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filename = captureFilenameInput.value;
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}
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if (captureResizeCheck.checked) {
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resizeWidth = Number(captureWidthInput.value);
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resizeHeight = Number(captureHeightInput.value);
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}
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else {
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resizeWidth = null;
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resizeHeight = null;
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}
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newCapture(
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filename,
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captureKeepOnDiskCheck.checked,
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!(captureFullResolutionCheck.checked),
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captureBayerCheck.checked,
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resizeWidth,
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resizeHeight
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);
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}
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function newCaptureResizeToggle(checkbox) {
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captureWidthInput = document.getElementById('captureWidthInput')
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captureHeightInput = document.getElementById('captureHeightInput')
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captureWidthInput.disabled = !(checkbox.checked)
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captureHeightInput.disabled = !(checkbox.checked)
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}
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// Move stage methods
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// TODO: Combine setStagePositions and moveStagePositions, with bool argument for 'absolute'
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function setStagePositions(x_abs, y_abs, z_abs) {
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// Make a position request
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function absMoveCallback(response, status) {
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if (status != 200) {
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alert("Error moving stage.");
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}
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console.log(status, response);
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updateStagePositions(response);
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}
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safeRequest("POST", baseURI+"/stage/position", { "absolute": true, "x": x_abs, "y": y_abs, "z": z_abs}, absMoveCallback)
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}
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function moveStagePositions(x_rel, y_rel, z_rel) {
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// Make a position request
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function relMoveCallback(response, status) {
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if (status != 200) {
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alert("Error moving stage.");
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}
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console.log(status, response);
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updateStagePositions(response);
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}
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safeRequest("POST", baseURI+"/stage/position", { "absolute": false, "x": x_rel, "y": y_rel, "z": z_rel}, relMoveCallback)
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}
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function setStagePositionsFromInput() {
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x_abs = Number(document.getElementById('x_abs').value);
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y_abs = Number(document.getElementById('y_abs').value);
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z_abs = Number(document.getElementById('z_abs').value);
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setStagePositions(x_abs, y_abs, z_abs)
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}
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// Standard callback for user-controller movement
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function keyMoveCallback(response, status) {
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console.log(status, response);
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updateStagePositions(response);
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}
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// Methods for input events
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// Click-to-move
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function clickHotspotImage(event) {
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if (document.getElementById("clickPositionCheck").checked == true) {
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xCoordinate = event.offsetX;
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yCoordinate = event.offsetY;
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console.log(xCoordinate, yCoordinate)
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xRelative = (0.5*event.target.offsetWidth - xCoordinate)/event.target.offsetWidth;
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yRelative = (0.5*event.target.offsetHeight - yCoordinate)/event.target.offsetHeight;
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console.log(xRelative, yRelative)
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xSteps = xRelative * fovX;
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ySteps = yRelative * fovY;
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console.log(xSteps, ySteps, 0)
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// Make a position request
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moveStagePositions(xSteps, ySteps, 0)
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}
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}
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// Scroll-to-focus
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window.addEventListener('wheel', function(e) {
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multiplier = 1/100;
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z_delta = e.deltaY * multiplier * focusVelocity;
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if ((document.getElementById("scrollFocusCheck").checked == true) && (e.target.parentNode.classList.value == "column middle")) {
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console.log(z_delta);
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console.log(e.target.parentNode.classList.value);
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// Make a position request
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safeRequest("POST", baseURI+"/stage/position", { "absolute": false, "z": z_delta}, keyMoveCallback)
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}
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});
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// Keyboard to move
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addEventListener("keydown", function (e) {
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keysDown[e.keyCode] = true; //Add key to array
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// If not currently in an input box
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if (!(e.target instanceof HTMLInputElement)) {
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// TODO: Remove this if condition? Pointless?
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// If stage movement keys are pressed
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if ((leftKeyID in keysDown) || (rightKeyID in keysDown) || (upKeyID in keysDown) || (downKeyID in keysDown) || (pgupKeyID in keysDown) || (pgdnKeyID in keysDown)) {
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// Calculate movement array
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x_rel = 0;
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y_rel = 0;
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z_rel = 0;
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if (leftKeyID in keysDown) {
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x_rel = x_rel + stageVelocity;
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}
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if (rightKeyID in keysDown) {
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x_rel = x_rel - stageVelocity;
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}
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if (upKeyID in keysDown) {
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y_rel = y_rel + stageVelocity;
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}
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if (downKeyID in keysDown) {
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y_rel = y_rel - stageVelocity;
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}
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if (pgupKeyID in keysDown) {
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z_rel = z_rel - focusVelocity;
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}
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if (pgdnKeyID in keysDown) {
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z_rel = z_rel + focusVelocity;
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}
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// Make a position request
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moveStagePositions(x_rel, y_rel, z_rel)
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}
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}
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}, false);
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addEventListener("keyup", function (e) {
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delete keysDown[e.keyCode]; //Remove key from array
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}, false);
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// Methods for making requests
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function safeRequest(method, url, payload, callback, lock=true, force=false) {
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if (force == true) {
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allowRequest = true;
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}
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else {
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allowRequest = !(requestLock);
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}
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if (allowRequest == true) {
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var xhr = new XMLHttpRequest(); // new HttpRequest instance
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xhr.open(method, url);
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if (lock == true) { // If request is using the lock
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requestLock = true; // Hold the lock
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}
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xhr.onload = function (e) {
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if (xhr.readyState === 4) {
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if (lock == true) { // If request is using the lock
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requestLock = false; // Release the lock
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}
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if (xhr.status !== 200) {
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console.error(xhr.statusText);
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}
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callback(JSON.parse(xhr.responseText), xhr.status);
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}
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};
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if (method == "POST" || method == "PUT") {
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xhr.setRequestHeader("Content-Type", "application/json;charset=UTF-8");
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}
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xhr.send(JSON.stringify(payload));
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}
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else {
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console.log("Cannot start the following request while the previous requets is pending:")
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console.log(method, url, payload)
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}
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}
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