fabricjs

问题 I'm trying to create a speech bubble with FabricJS to integrate into a WordPress plugin to (hopefully) release for free that helps people annotate images, I found the original bubble here on SO here: speech buble html5 canvas js but I'm having a few issues and am a little unsure as to how to go about solving them (I'll keep trying and post a solution here just in case). fabric.speechBubble = fabric.util.createClass(fabric.Object, fabric.Observable, { type: 'speechBubble', initialize: function

问题 I'm trying to create a speech bubble with FabricJS to integrate into a WordPress plugin to (hopefully) release for free that helps people annotate images, I found the original bubble here on SO here: speech buble html5 canvas js but I'm having a few issues and am a little unsure as to how to go about solving them (I'll keep trying and post a solution here just in case). fabric.speechBubble = fabric.util.createClass(fabric.Object, fabric.Observable, { type: 'speechBubble', initialize: function

问题 I am trying to create an effect with Fabric JS where letters appear to be "embroidered" on a sweater like this: I can achieve this effect in Photoshop by using this action. My idea for getting it into a <canvas> is to render out a png from Photoshop of every embroidered letter. Then, I will take each letter and place it on the canvas based on what the user types. However this approach will not have correct kerning. To fix this, I was trying to write out text in Fabric using the same font and

问题 I am trying to create an effect with Fabric JS where letters appear to be "embroidered" on a sweater like this: I can achieve this effect in Photoshop by using this action. My idea for getting it into a <canvas> is to render out a png from Photoshop of every embroidered letter. Then, I will take each letter and place it on the canvas based on what the user types. However this approach will not have correct kerning. To fix this, I was trying to write out text in Fabric using the same font and

问题 I am trying to create an effect with Fabric JS where letters appear to be "embroidered" on a sweater like this: I can achieve this effect in Photoshop by using this action. My idea for getting it into a <canvas> is to render out a png from Photoshop of every embroidered letter. Then, I will take each letter and place it on the canvas based on what the user types. However this approach will not have correct kerning. To fix this, I was trying to write out text in Fabric using the same font and

问题 I am trying to create an effect with Fabric JS where letters appear to be "embroidered" on a sweater like this: I can achieve this effect in Photoshop by using this action. My idea for getting it into a <canvas> is to render out a png from Photoshop of every embroidered letter. Then, I will take each letter and place it on the canvas based on what the user types. However this approach will not have correct kerning. To fix this, I was trying to write out text in Fabric using the same font and

问题 I want to create an image object in fabric.js from ImageData object, we can get ImageData from this: var imgData=ctx.getImageData(10,10,50,50); //ctx.putImageData(imgData,10,70); // something liket that var image = new fabric.Image.fromImageData (...); Is there any way to create an image object from ImageData object? 回答1: Let me put my idea here, I don't like this way but have no others around - var ctx = canvas.getContext('2d'); var data = ctx.getImageData(0, 0, 20, 20); var c = document

问题 I want to get the data of an image of a fabric.Image object to loop through each pixel and change its color if it's a given color to another given color. But I don't want to get the data of the entire canvas , only of that specific object. Something like this - changeColor = (object, targetColor, replacementColor) => { data = object.getData(); for(var i = 0, n = data.length; i<n; i+=4){ let r = data[i]; let g = data[i + 1]; let b = data[i + 2]; if(r === targetColor.r && g === targetColor.g &&

问题 Using angular In a foreach loop i am generating a canvas using Fabricjs and attaching images and text. What i need to know is how to keep track of the multiple canvas variables being set. angular.forEach($scope.data, function (obj, key) { var newCanvas = document.createElement('canvas'); newCanvas.id = 'variableCanvas'+key; var body = document.getElementById("canvasContainer"); body.appendChild(newCanvas); var canvas = new fabric.Canvas('variableCanvas'+key, { backgroundColor: 'rgb(215,215

问题 Using angular In a foreach loop i am generating a canvas using Fabricjs and attaching images and text. What i need to know is how to keep track of the multiple canvas variables being set. angular.forEach($scope.data, function (obj, key) { var newCanvas = document.createElement('canvas'); newCanvas.id = 'variableCanvas'+key; var body = document.getElementById("canvasContainer"); body.appendChild(newCanvas); var canvas = new fabric.Canvas('variableCanvas'+key, { backgroundColor: 'rgb(215,215