Today circle of friends and fire, I heard that the reason is @tencent official website can get a green hat, ah pooh, is a good National Day picture, but I heard that 502 soon, so we start to achieve a

Because the code is relatively simple, I won’t introduce it.

var cvs = document.getElementById("cvs"); var ctx = cvs.getContext("2d"); var exportImage = document.getElementById("export"); var img = document.getElementById("img"); var hat = "hat6"; var canvasFabric; var hatInstance; var screenWidth = window.screen.width < 500 ? window.screen.width : 300; function viewer() { var file = document.getElementById("upload").files[0]; console.log(file); var reader = new FileReader; if (file) { reader.readAsDataURL(file); reader.onload = function(e) { img.src = reader.result; img.onload = function() { img2Cvs(img) } } } else { img.src = "" } } function img2Cvs(img) { cvs.width = img.width; cvs.height = img.height; cvs.style.display = "block"; canvasFabric = new fabric.Canvas("cvs", { width: screenWidth, height: screenWidth, backgroundImage: new fabric.Image(img, { scaleX: screenWidth / img.width, scaleY: screenWidth / img.height }) }); changeHat(); document.getElementById("uploadContainer").style.display = "none"; document.getElementById("uploadText").style.display = "none"; document.getElementById("upload").style.display = "none"; document.getElementById("change").style.display = "block"; document.getElementById("exportBtn").style.display = "block"; document.getElementById("tip").style.opacity = 1 } function changeHat() { document.getElementById(hat).style.display = "none"; var hats = document.getElementsByClassName("hide"); hat = "hat" + (+hat.replace("hat", "") + 1) % hats.length; var hatImage = document.getElementById(hat); hatImage.style.display = "block"; if (hatInstance) { canvasFabric.remove(hatInstance) } hatInstance = new fabric.Image(hatImage, { top: 40, left: screenWidth / 3, scaleX: 100 / hatImage.width, scaleY: 100 / hatImage.height, cornerColor: "#0b3a42", cornerStrokeColor: "#fff", cornerStyle: "circle", transparentCorners: false, rotatingPointOffset: 30 }); hatInstance.setControlVisible("bl", false); hatInstance.setControlVisible("tr", false); hatInstance.setControlVisible("tl", false); hatInstance.setControlVisible("mr", false); hatInstance.setControlVisible("mt", false); canvasFabric.add(hatInstance) } function exportFunc() { document.getElementsByClassName("canvas-container")[0].style.display = "none"; document.getElementById("exportBtn").style.display = "none"; Document.getelementbyid ("tip").innerhtml = "Long press image to save or share "; document.getElementById("change").style.display = "none"; cvs.style.display = "none"; exportImage.style.display = "block"; exportImage.src = canvasFabric.toDataURL({ width: screenWidth, height: screenWidth }) }Copy the code

The final result

Drag the image to see that you have assembled a complete image

Right click to view source code

All pictures are from Tencent official website

Source address: https://gitee.com/alterem/avatar.git

Demo address: http://alterem.gitee.io/avatar/