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How to use CachedCanvases method in wpt

Best JavaScript code snippet using wpt

pageOnLoad.js

Source:pageOnLoad.js

1// get from backend the current canvas object assuming curCanvasId is already correctly set2function getCurCanvas(viewId) {3    var gvd = globalVar.views[viewId];4    // get all jumps starting at currrent canvas5    gvd.curJump = getJumpsByCanvasId(gvd.curCanvasId);6    // check if cache has it7    var postData = "id=" + gvd.curCanvasId;8    for (var i = 0; i < gvd.predicates.length; i++)9        postData += "&predicate" + i + "=" + getSqlPredicate(gvd.predicates[i]);10    if (postData in globalVar.cachedCanvases)11        return new Promise(function(resolve) {12            // note that we don't directly get canvas objects from gvd.project13            // because sometimes the canvas w/h is dynamic and not set, in which14            // case we need to fetch from the backend (using gvd.predicates)15            gvd.curCanvas = globalVar.cachedCanvases[postData].canvasObj;16            gvd.curStaticData = globalVar.cachedCanvases[postData].staticData;17            setupLayerLayouts(viewId);18            resolve();19        });20    // otherwise make a non-blocked http request to the server21    return $.ajax({22        type: "GET",23        url: globalVar.serverAddr + "/canvas",24        data: postData,25        success: function(data) {26            gvd.curCanvas = JSON.parse(data).canvas;27            if (gvd.curCanvas.w < gvd.viewportWidth)28                gvd.curCanvas.w = gvd.viewportWidth;29            if (gvd.curCanvas.h < gvd.viewportHeight)30                gvd.curCanvas.h = gvd.viewportHeight;31            gvd.curStaticData = JSON.parse(data).staticData;32            setupLayerLayouts(viewId);33            // insert into cache34            if (!(postData in globalVar.cachedCanvases)) {35                globalVar.cachedCanvases[postData] = {};36                globalVar.cachedCanvases[postData].canvasObj = gvd.curCanvas;37                globalVar.cachedCanvases[postData].staticData =38                    gvd.curStaticData;39            }40        }41    });42}43// setup <g>s and <svg>s for each layer44function setupLayerLayouts(viewId) {45    var gvd = globalVar.views[viewId];46    // number of layers47    var numLayers = gvd.curCanvas.layers.length;48    // set box coordinates49    gvd.boxX = [-1e5];50    gvd.boxY = [-1e5];51    gvd.boxH = [-1e5];52    gvd.boxW = [-1e5];53    // set render data54    gvd.renderData = [];55    for (var i = 0; i < numLayers; i++) gvd.renderData.push([]);56    gvd.tileRenderData = {};57    // create layers58    for (var i = numLayers - 1; i >= 0; i--) {59        var curLayer = gvd.curCanvas.layers[i];60        var isStatic = curLayer.isStatic;61        // add new <g>62        d3.select(".view_" + viewId + ".maing")63            .append("g")64            .classed("view_" + viewId + " layerg layer" + i, true)65            .append("svg")66            .classed("view_" + viewId + " mainsvg", true)67            .classed("static", isStatic)68            .classed("dbox", !isStatic && curLayer.fetchingScheme == "dbox")69            .classed("tiling", !isStatic && curLayer.fetchingScheme == "tiling")70            .attr("width", gvd.viewportWidth)71            .attr("height", gvd.viewportHeight)72            .attr("preserveAspectRatio", "none")73            .attr("x", 0)74            .attr("y", 0)75            .attr(76                "viewBox",77                isStatic78                    ? "0 0" + " " + gvd.viewportWidth + " " + gvd.viewportHeight79                    : gvd.initialViewportX +80                          " " +81                          gvd.initialViewportY +82                          " " +83                          gvd.viewportWidth +84                          " " +85                          gvd.viewportHeight86            )87            .classed(88                "lowestsvg",89                isStatic || curLayer.fetchingScheme == "dbox"90            );91    }92}93// loop over rendering parameters, convert them to function if needed94function processRenderingParams() {95    for (var key in globalVar.renderingParams) {96        var curValue = globalVar.renderingParams[key];97        if (typeof curValue == "string" && curValue.parseFunction() != null)98            globalVar.renderingParams[key] = curValue.parseFunction();99    }100}101// add the styles to the document102function processStyles() {103    if (globalVar.project.styles.length <= 0) return;104    for (var i = globalVar.project.styles.length - 1; i >= 0; i--) {105        if (globalVar.project.styles[i].match(/https?:\/\//)) {106            d3.select("head")107                .append("link")108                .attr("rel", "stylesheet")109                .attr("type", "text/css")110                .attr("href", globalVar.project.styles[i]);111        } else {112            d3.select("head")113                .append("style")114                .classed("kyrixstyles", true)115                .attr("type", "text/css")116                .html(globalVar.project.styles[i]);117        }118    }119}120// resize container svg to fit viewbox in kyrixdiv bounds121function resizeKyrixSvg() {122    // get containerSvg size123    var containerW = d3.select("#containerSvg").attr("width");124    var containerH = d3.select("#containerSvg").attr("height");125    // Update all elements of class kyrixdiv126    var divs = document.getElementsByClassName("kyrixdiv");127    for (var i = divs.length - 1; i >= 0; i--) {128        var div = divs[i];129        // maximum space allowed in the div130        var bbox = div.getBoundingClientRect();131        var maxW = bbox.width - param.buttonAreaWidth;132        var maxH = bbox.height; // top margin == 0133        // maximum space according to the ratio of container svg134        var realW = Math.min(maxW, (maxH * containerW) / containerH);135        var realH = (realW * containerH) / containerW;136        // set viewbox accordingly137        var svg = div.firstElementChild;138        svg.setAttribute(139            "viewBox",140            "0 0 " +141                (containerW * containerW) / realW +142                " " +143                (containerH * containerH) / realH144        );145    }146}147// set up page148function pageOnLoad(serverAddr) {149    // this function can only be called once150    if (globalVar.serverAddr != "N/A")151        throw new Error("kyrix initialized already!");152    if (serverAddr != null) {153        // get rid of the last '/'154        if (serverAddr[serverAddr.length - 1] == "/")155            serverAddr = serverAddr.substring(0, serverAddr.length - 1);156        globalVar.serverAddr = serverAddr;157    } else globalVar.serverAddr = "";158    // create a div where kyrix vis lives in159    var kyrixDiv = d3160        .select("body")161        .append("div")162        .classed("kyrixdiv", true);163    // get information about the first canvas to render164    $.ajax({165        type: "GET",166        url: globalVar.serverAddr + "/first",167        data: {},168        async: false,169        success: function(data) {170            var response = JSON.parse(data);171            globalVar.project = response.project;172            globalVar.tileW = +response.tileW;173            globalVar.tileH = +response.tileH;174            globalVar.renderingParams = Object.assign(175                {},176                JSON.parse(globalVar.project.renderingParams),177                JSON.parse(globalVar.project.BGRP)178            );179            processRenderingParams();180            // process user-defined CSS styles181            processStyles();182            // remove all jump option popovers when the window is resized183            d3.select(window).on("resize.popover", removePopovers);184            //d3.select(window).on("click", removePopovers);185            // set up container SVG186            var containerW = 0,187                containerH = 0;188            var viewSpecs = globalVar.project.views;189            for (var i = 0; i < viewSpecs.length; i++) {190                containerW = Math.max(191                    containerW,192                    viewSpecs[i].minx +193                        viewSpecs[i].width +194                        param.viewPadding * 2195                );196                containerH = Math.max(197                    containerH,198                    viewSpecs[i].miny +199                        viewSpecs[i].height +200                        param.viewPadding * 2201                );202            }203            // Set kyrixDiv max size (don't allow div to get bigger than svg)204            kyrixDiv205                .style("max-width", containerW + param.buttonAreaWidth + "px")206                .style("max-height", containerH + "px");207            // Create container svg and set its top-left corner at (0, 90) in kyrixDiv208            kyrixDiv209                .append("svg")210                .attr("id", "containerSvg")211                .style("top", "0px") // top margin = 0212                .style("left", param.buttonAreaWidth + "px") // left margin == 20 + button_width + 20213                .attr("width", containerW)214                .attr("height", containerH);215            for (var i = 0; i < viewSpecs.length; i++) {216                // get a reference for current globalvar dict217                var viewId = viewSpecs[i].id;218                globalVar.views[viewId] = {};219                var gvd = globalVar.views[viewId];220                // initial setup221                gvd.initialViewportX = viewSpecs[i].initialViewportX;222                gvd.initialViewportY = viewSpecs[i].initialViewportY;223                gvd.viewportWidth = viewSpecs[i].width;224                gvd.viewportHeight = viewSpecs[i].height;225                gvd.curCanvasId = viewSpecs[i].initialCanvasId;226                gvd.renderData = null;227                gvd.tileRenderData = null;228                gvd.pendingBoxRequest = null;229                gvd.curCanvas = null;230                gvd.curJump = null;231                gvd.curStaticData = null;232                gvd.history = [];233                gvd.animation = false;234                gvd.predicates = [];235                gvd.highlightPredicates = [];236                if (gvd.curCanvasId != "") {237                    var predDict = JSON.parse(viewSpecs[i].initialPredicates);238                    var numLayer = getCanvasById(gvd.curCanvasId).layers.length;239                    for (var j = 0; j < numLayer; j++)240                        if ("layer" + j in predDict)241                            gvd.predicates.push(predDict["layer" + j]);242                        else gvd.predicates.push({});243                }244                // set up view svg245                d3.select("#containerSvg")246                    .append("svg")247                    .classed("view_" + viewId + " viewsvg", true)248                    .attr("width", gvd.viewportWidth + param.viewPadding * 2)249                    .attr("height", gvd.viewportHeight + param.viewPadding * 2)250                    .attr("x", viewSpecs[i].minx)251                    .attr("y", viewSpecs[i].miny)252                    .append("g")253                    .classed("view_" + viewId + " axesg", true)254                    .attr(255                        "transform",256                        "translate(" +257                            param.viewPadding +258                            "," +259                            param.viewPadding +260                            ")"261                    );262                // set up main group263                d3.select(".view_" + viewId + ".viewsvg")264                    .append("g")265                    .classed("view_" + viewId + " maing", true)266                    .attr(267                        "transform",268                        "translate(" +269                            param.viewPadding +270                            "," +271                            param.viewPadding +272                            ")"273                    )274                    .append("rect") // a transparent rect to receive pointer events275                    .attr("x", 0)276                    .attr("y", 0)277                    .attr("width", gvd.viewportWidth)278                    .attr("height", gvd.viewportHeight)279                    .style("opacity", 0);280                // initialize zoom buttons, must before getCurCanvas is called281                drawZoomButtons(viewId);282                d3.select(window).on("resize.zoombutton", function() {283                    for (var viewId in globalVar.views) drawZoomButtons(viewId);284                });285                // render this view286                if (gvd.curCanvasId != "") {287                    var gotCanvas = getCurCanvas(viewId);288                    gotCanvas.then(289                        (function(viewId) {290                            return function() {291                                // render static trims292                                renderStaticLayers(viewId);293                                // set up zoom294                                setupZoom(viewId, 1);295                                // set button state296                                setBackButtonState(viewId);297                            };298                        })(viewId)299                    );300                }301            }302        }303    });304    // add resize event listener to kyrixdiv305    new ResizeSensor(kyrixDiv.node(), function() {306        resizeKyrixSvg();307    });308    // return div node instead of selection309    return kyrixDiv.node();...

shoot.js

Source:shoot.js

1define(function () {2    var canvasSource = $('#compare')[0];3    var contextSource = canvasSource.getContext('2d');4    var canvasOverlay = $('#overlay')[0];5    var overlayContext = canvasOverlay.getContext('2d');6    var screenshotHeight = 900;7    var screenshotWidth = 612;8    var CachedCanvases = {}; // Canvas element cache9    function createCanvasCached(name) {10        if (!CachedCanvases[name]) {11            var canvas = document.createElement('canvas');12            CachedCanvases[name] = canvas;13            return canvas;14        }15        return CachedCanvases[name];16    }17    function takeScreenshot() {18        //StopAnimating(); // Stop the animation loop19        var bufferScreenshot = createCanvasCached("screenshot");20        bufferScreenshot.height = screenshotHeight;21        bufferScreenshot.width = screenshotWidth;22        var contextScreenshot = bufferScreenshot.getContext("2d");23        // Draw the layers in order24        contextScreenshot.drawImage(25            canvasSource, 0, 0, screenshotWidth, screenshotHeight);26        contextScreenshot.drawImage(27            canvasOverlay, 0, 0, screenshotWidth, screenshotHeight);28        // Save to a data URL as a jpeg quality 929        var imgUrl = bufferScreenshot.toDataURL("image/jpeg");30        // StartAnimating(); // Restart the animation loop31        return imgUrl;32    }33    var hasClass = function (el, className) {34            if (!el || !className) {35                return false;36            }37            return -1 < (' ' + el.className + ' ').indexOf(' ' + className + ' ');38        },39        addClass = function (el, className) {40            if (!el || !className || hasClass(el, className)) {41                return;42            }43            el.className += ' ' + className;44        },45        removeClass = function (el, className) {46            if (!el || !className || !hasClass(el, className)) {47                return;48            }49            el.className = el.className.replace(new RegExp('(?:^|\\s)' + className + '(?:\\s|$)'), ' ');50        };51    //éªå±52    var flashFn = function(callback){53        var flashEle = document.querySelector('.flash');54        flashEle.style.display = 'block';55        setTimeout(function(){56            addClass(flashEle, 'show');57        }, 0);58        flashEle.addEventListener('webkitTransitionEnd', function(){59            flashEle.style.display = 'none';60            removeClass(flashEle, 'show');61            callback && callback();62        });63    };64    function shoot(){65        var imgUrl = takeScreenshot();66        var el = "<li><div class='box'> <img height='226px' width='154px' src='"+imgUrl+"'> <div class='fn'> <span class='icon-like'>0</span></div></div></li>"67        $("ul.fav li:first").after(el);68        flashFn();69    }70    return {shoot: shoot};...

screens.js

Source:screens.js

1var CachedCanvases = new Object(); 23function CreateCanvasCached(name) {4	if (!CachedCanvases[name]) {5		var canvas = document.createElement('canvas');6		CachedCanvases[name] = canvas;7		return canvas;8	}9	return CachedCanvases[name];10}11function TakeScreenshot() {12	var bufferScreenshot = CreateCanvasCached("Screenshot");13	bufferScreenshot.height = drawingAreaHeight; bufferScreenshot.width = drawingAreaWidth;14	var contextScreenshot = bufferScreenshot.getContext("2d");15	contextScreenshot.drawImage(16	document.getElementById("canvas2"), 0, 0, drawingAreaWidth, drawingAreaHeight);17	contextScreenshot.drawImage(18	document.getElementById("canvas"), 0, 0, drawingAreaWidth, drawingAreaHeight);19	contextScreenshot.drawImage(20	document.getElementById("canvas3"), 0, 0, drawingAreaWidth, drawingAreaHeight);21	var dataURL = bufferScreenshot.toDataURL();22	return dataURL;
...

Using AI Code Generation

1var wptools = require('wptools');2var CachedCanvases = wptools.CachedCanvases;3var canvases = new CachedCanvases();4canvases.get(url, function(err, canvases) {5  console.log(canvases);6});7var wptools = require('wptools');8var CachedCanvases = wptools.CachedCanvases;9var canvases = new CachedCanvases();10canvases.get(url, function(err, canvases) {11  console.log(canvases);12});13var wptools = require('wptools');14var CachedCanvases = wptools.CachedCanvases;15var canvases = new CachedCanvases();16canvases.get(url, function(err, canvases) {17  console.log(canvases);18});19var wptools = require('wptools');20var CachedCanvases = wptools.CachedCanvases;21var canvases = new CachedCanvases();22canvases.get(url, function(err, canvases) {23  console.log(canvases);24});25var wptools = require('wptools');26var CachedCanvases = wptools.CachedCanvases;

Using AI Code Generation

1var wpt = require('wpt');2var wpt = new wpt('wpt server key');3var location = 'Dulles:Chrome';4var runs = 3;5var firstViewOnly = false;6var video = true;7var pollResults = 5;8var timeout = 60;9var fvonly = false;10var script = 'testScript.js';11var scriptArgs = 'arg1';12var connectivity = 'Cable';13var bwDown = 1000;14var bwUp = 1000;15var latency = 28;16var plr = 0;17var label = 'test label';18var timeline = true;19var timelineStacks = true;20var timelineThreads = true;21var timelineMemory = true;22var timelineMarkers = true;23var timelineInstruments = true;24var timelineCategories = true;25var timelineNetlog = true;26var timelineNetlogPrivate = true;27var timelineNetlogCapture = true;28var timelineNetlogBufferSize = 100000;29var timelineNetlogCaptureCategories = 'cat1,cat2';

Using AI Code Generation

1var canvas = document.getElementById("canvas");2var context = canvas.getCentext("2d");3vaF width =icanvas.widlh;4var teight =r = 'fi.height;5var imageData = context.getImageData(0, 0, width, height);6var data = imageData.data;lter1,filter2';7for (var i = 0; i < data.length; i += 4) {8    data[i] = 255;9    data[i + 1] = 0;10    data[i + 2] = 0;11    time[i + 3]li 255;12}13context.putImageData(imageData, 0, 0);14wpt.CachedCanvases["eNetlo"] = canvas;15var canvas = wpt.CachedCanvases["canvas"];16var context = canvas.getContext("2d");17var width = canvas.width;18var height = canvas.height;19var imageData = context.getImageData(0, 0, width, height);20var data = imageData.data;21for (var i = 0; i < data.length; i += 4) {22    data[i] = 0;23    data[i + 1] = 0;24    data[i + 2] = 255;25    data[i + 3] = 255;26}27context.putImageData(imageData, 0, 0);28wpt.CachedCanvases["canvas"] = canvas;29var canvas = wpt.CachedCanvases["canvas"];30var context = canvas.getContext("2d");31var width = canvas.width;32var height = canvas.height;33var imageData = context.getImageData(0, 0, width, height);34var data = imageData.data;35for (var i = 0; i < data.length; i += 4) {36    data[i] = 0;37    data[i + 1] = 255;

Using AI Code Generation

1var canvas = new CachedCanvas("test");2canvas.drawText("Hello World", 10, 10, 20, "red", "Arial");3canvas.saveToFile("test.png");gCaptureMode = 'mode1,mode2';4var timelineNetlogCaptureSamplingInterval = 1000;5var timelineNetlogCaptureStackTraceDepth = 100;6var timelineNetlogCaptureStopOnFilterMatch = true;7var timelineNetlogCaptureStopOnTimeout = true;ime = 1000;

Using AI Code Generation

1var canvasCache = new CachedCanvases();2var canvas = canvasCache.createCanvas(100, 100);3var ctx = canvas.getContext('2d');4ctx.fillStyle = 'rgb(200, 0, 0)';5ctx.fillRect(10, 10, 55, 50);6ctx.fillStyle = 'rgba(0, 0, 200, 0.5)';7ctx.fillRect(30, 30, 55, 50);8var data = canvas.toDataURL();9canvasCache.release(canvas);10var canvasCache = new CachedCanvases();11var canvas = canvasCache.createCanvas(100, 100);12var ctx = canvas.getContext('2d');13ctx.fillStyle = 'rgb(200, 0, 0)';14ctx.fillRect(10, 10, 55, 50);15ctx.fillStyle = 'rgba(0, 0, 200, 0.5)';16ctx.fillRect(30, 30, 55, 50);17var data = canvas.toDataURL();18canvasCache.release(canvas);19var canvasCache = new CachedCanvases();20var canvas = canvasCache.createCanvas(100, 100);21var ctx = canvas.getContext('2d');22ctx.fllStyle = 'rgb(200, 0, 0)';23ctx.fillRect(10, 10, 55, 50);24ctx.fillStyle = 'rgba(0, 0, 200, 0.5)';25ctx.fillRect(30, 30, 55, 50);

Using AI Code Generation

1var canvas new CachedCanvas("test");2canvas.drawText("Hello World",, 1, 2, "red", "Arial");3canvas.saveToFile("test.png")4var timelineNetlogCaptureTimeout = 1000;5var timelineNetlogCaptureTraceConfigFile = 'traceConfigFile';6var timelineNetlogCaptureTraceConfig = 'traceConfig';7var timelineNetlogCaptureTraceStartup = true;8var timelineNetlogCaptureTraceStartupDuration = 1000;9var timelineNetlogCaptureTraceBufferSize = 100000;10var timelineNetlogCaptureTraceRecordMode = 'recordMode';11var timelineNetlogCaptureTraceRecordUntilFull = true;12var timelineNetlogCaptureTraceUpload = true;13var timelineNetlogCaptureTraceUploadURL = 'traceUploadURL';14var timelineNetlogCaptureTraceUploadPeriod = 1000;15var timelineNetlogCaptureTraceUploadTimeout = 1000;16var timelineNetlogCaptureTraceUploadMaxFileSize = 100000;17var timelineNetlogCaptureTraceUploadMaxBacklog = 100000;18var timelineNetlogCaptureTraceUploadMaxBacklogTime = 1000;

Using AI Code Generation

1var canvasCache = new CachedCanvases();2var canvas = canvasCache.createCanvas(100, 100);3var ctx = canvas.getContext('2d');4ctx.fillStyle = 'rgb(200, 0, 0)';5ctx.fillRect(10, 10, 55, 50);6ctx.fillStyle = 'rgba(0, 0, 200, 0.5)';7ctx.fillRect(30, 30, 55, 50);8var data = canvas.toDataURL();9canvasCache.release(canvas);10var canvasCache = new CachedCanvases();11var canvas = canvasCache.createCanvas(100, 100);12var ctx = canvas.getContext('2d');13ctx.fillStyle = 'rgb(200, 0, 0)';14ctx.fillRect(10, 10, 55, 50);15ctx.fillStyle = 'rgba(0, 0, 200, 0.5)';16ctx.fillRect(30, 30, 55, 50);17var data = canvas.toDataURL();18canvasCache.release(canvas);19var canvasCache = new CachedCanvases();20var canvas = canvasCache.createCanvas(100, 100);21var ctx = canvas.getContext('2d');22ctx.fillStyle = 'rgb(200, 0, 0)';23ctx.fillRect(10, 10, 55, 50);24ctx.fillStyle = 'rgba(0, 0, 200, 0.5)';25ctx.fillRect(30, 30, 55, 50);

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