我知道这个问题有点老了,但我想我会尽力帮忙,因为我必须解决确切的问题。
// Your Fabric Canvas
var canvas = new fabric.Canvas('YOURCANVASID');
// New event handler to take the value from the textarea and send to the addText utility function.
$('.add-text').on('click', function(e){
e.preventDefault();
var text = $('#filedset').val();
addText(text);
});
// Watches the keyup event handler in your textarea and updates the selected text node on canvas while you are typing. Creates a nice effect.
// with whats being typed.
$('#filedset').on('keyup' , function(){
var activeObject = canvas.getActiveObject();
// We do a check to make sure there is an active canvas object, and see if it's text.
if (activeObject && activeObject.type === 'text') {
if (!this.value) {
return false;
}
else {
activeObject.setText(this.value);
console.log(this.value);
}
}
canvas.renderAll();
});
// Function to add the text, just pass in a text string you want to add to the canvas.
function addText(addtext) {
var text = new fabric.Text(addtext, { });
canvas.add(text);
// Center The New Text on the canvas or position it wherever
canvas.centerObject(text);
}
这是未经测试的当前形式,因为它来自我编写的更大的命名空间应用程序。但它应该工作。您正朝着正确的方向前进,但实际上您在 keyup / change 上添加了一个新的文本节点。我希望这可以帮助别人。