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我正在从 json 获取图像源并在 html 页面中显示....
在图像之上,我想添加如下所示的font-awesome 图标....
所以我尝试了下面的代码,但是字体很棒的图标没有显示....
html
<link
href="https://maxcdn.bootstrapcdn.com/font-awesome/4.3.0/css/font-awesome.min.css"
rel="stylesheet" type='text/css' >
脚本
$(document).ready(function() {
var maskedImageUrla = "";
var fontawesome = "<i class='fa fa-user-plus fa-2x'></i>";
$.getJSON('test.json', function(json) {
if (tl.src)
{
maskedImageUrla = 'http://sitename.com/images/' + tl.src;
}
var mask1 = $(".container").mask({
maskImageUrl: maskedImageUrla,
fontawesome: fontawesome,
onMaskImageCreate: function(img) {}
});
}); // end of document ready
这里是 json file
这里是 https://codepen.io/kidsdial/pen/bZNNXJ
更新:我在下面添加了代码片段....
var mask1;
$(document).ready(function()
{
var maskedImageUrla = "";
var fontawesome = "<i class='fa fa-user-plus fa-2x'></i>";
var coordinates = {
x: 0,
y: 0
};
var width = 0; var height = 0;
var json = {
"path" : " love shape\/",
"info" : {
"author" : "",
"keywords" : "",
"file" : "love shape",
"date" : "sRGB",
"title" : "",
"description" : "Normal",
"generator" : "Export Kit v1.2.8"
},
"name" : "love shape",
"layers" : [
{
"x" : 0,
"height" : 612,
"layers" : [
{
"x" : 0,
"color" : "0xFFFFFF",
"height" : 612,
"y" : 0,
"width" : 612,
"shapeType" : "rectangle",
"type" : "shape",
"name" : "bg_rectangle_1"
},
{
"x" : 49,
"height" : 480,
"layers" : [
{
"x" : 0,
"height" : 480,
"src" : "hQ45RtK.png",
"y" : 0,
"width" : 514,
"type" : "image",
"name" : "mask_image_1"
},
{
"radius" : "27 \/ 27",
"color" : "0xACACAC",
"x" : 233,
"y" : 205,
"height" : 53,
"width" : 53,
"shapeType" : "ellipse",
"type" : "shape",
"name" : "useradd_ellipse1"
}
],
"y" : 66,
"width" : 514,
"type" : "group",
"name" : "user_image_1"
}
],
"y" : 0,
"width" : 612,
"type" : "group",
"name" : "loveshape_18"
}
]
};
for (let layer of json.layers)
{
width = layer.width;
height = layer.height;
if (layer.layers && layer.layers.length > 0)
{
for (let temp of layer.layers)
{
if (temp.src) maskedImageUrla = temp.src;
else if (temp.layers)
{
for (let tl of temp.layers)
if (tl.src)
{
maskedImageUrla = 'https://i.imgur.com/' + tl.src;
coordinates.x = temp.x;
coordinates.y = temp.y;
}
}
}
}
}
$(".container").css('width', width + "px").css('height', height + "px").addClass('temp');
var mask1 = $(".container").mask({
maskImageUrl: maskedImageUrla,
fontawesome : fontawesome,
onMaskImageCreate: function(img) {
img.css({
"position": "fixed",
"left": coordinates.x + "px",
"top": coordinates.y + "px"
});
}
});
fileupa1.onchange = function() {
mask1.loadImage(URL.createObjectURL(fileupa1.files[0]));
};
}); // end of document ready
// jq plugin for mask
(function($) {
var JQmasks = [];
$.fn.mask = function(options) {
// This is the easiest way to have default options.
var settings = $.extend({
// These are the defaults.
maskImageUrl: undefined,
imageUrl: undefined,
scale: 1,
id: new Date().getUTCMilliseconds().toString(),
x: 0, // image start position
y: 0, // image start position
onMaskImageCreate: function(div) {},
}, options);
var container = $(this);
let prevX = 0,
prevY = 0,
draggable = false,
img,
canvas,
context,
image,
timeout,
initImage = false,
startX = settings.x,
startY = settings.y,
div;
container.mousePosition = function(event) {
return {
x: event.pageX || event.offsetX,
y: event.pageY || event.offsetY
};
}
container.selected = function(ev) {
var pos = container.mousePosition(ev);
var item = $(".masked-img canvas").filter(function() {
var offset = $(this).offset()
var x = pos.x - offset.left;
var y = pos.y - offset.top;
var d = this.getContext('2d').getImageData(x, y, 1, 1).data;
return d[0] > 0
});
JQmasks.forEach(function(el) {
var id = item.length > 0 ? $(item).attr("id") : "";
if (el.id == id)
el.item.enable();
else el.item.disable();
});
};
container.enable = function() {
draggable = true;
$(canvas).attr("active", "true");
div.css({
"z-index": 2
});
}
container.disable = function() {
draggable = false;
$(canvas).attr("active", "false");
div.css({
"z-index": 1
});
}
container.onDragStart = function(evt) {
container.selected(evt);
prevX = evt.clientX;
prevY = evt.clientY;
};
container.getImagePosition = function() {
return {
x: settings.x,
y: settings.y,
scale: settings.scale
};
};
container.onDragOver = function(evt) {
if (draggable && $(canvas).attr("active") === "true") {
var x = settings.x + evt.clientX - prevX;
var y = settings.y + evt.clientY - prevY;
if (x == settings.x && y == settings.y)
return; // position has not changed
settings.x += evt.clientX - prevX;
settings.y += evt.clientY - prevY;
prevX = evt.clientX;
prevY = evt.clientY;
container.updateStyle();
}
};
container.updateStyle = function() {
clearTimeout(timeout);
timeout = setTimeout(function() {
context.clearRect(0, 0, canvas.width, canvas.height);
context.beginPath();
context.globalCompositeOperation = "source-over";
image = new Image();
image.setAttribute('crossOrigin', 'anonymous');
image.src = settings.maskImageUrl;
image.onload = function() {
canvas.width = image.width;
canvas.height = image.height;
context.drawImage(image, 0, 0, image.width, image.height);
div.css({
"width": image.width,
"height": image.height
});
};
img = new Image();
img.src = settings.imageUrl;
img.setAttribute('crossOrigin', 'anonymous');
img.onload = function() {
settings.x = settings.x == 0 && initImage ? (canvas.width - (img.width * settings.scale)) / 2 : settings.x;
settings.y = settings.y == 0 && initImage ? (canvas.height - (img.height * settings.scale)) / 2 : settings.y;
context.globalCompositeOperation = 'source-atop';
context.drawImage(img, settings.x, settings.y, img.width * settings.scale, img.height * settings.scale);
initImage = false;
};
}, 0);
};
// change the draggable image
container.loadImage = function(imageUrl) {
if (img)
img.remove();
// reset the code.
settings.y = startY;
settings.x = startX;
prevX = prevY = 0;
settings.imageUrl = imageUrl;
initImage = true;
container.updateStyle();
};
// change the masked Image
container.loadMaskImage = function(imageUrl, from) {
if (div)
div.remove();
canvas = document.createElement("canvas");
context = canvas.getContext('2d');
canvas.setAttribute("draggable", "true");
canvas.setAttribute("id", settings.id);
settings.maskImageUrl = imageUrl;
div = $("<div/>", {
"class": "masked-img"
}).append(canvas);
div.find("canvas").on('touchstart mousedown', function(event) {
if (event.handled === false) return;
event.handled = true;
container.onDragStart(event);
});
div.find("canvas").on('touchend mouseup', function(event) {
if (event.handled === false) return;
event.handled = true;
container.selected(event);
});
div.find("canvas").bind("dragover", container.onDragOver);
container.append(div);
if (settings.onMaskImageCreate)
settings.onMaskImageCreate(div);
container.loadImage(settings.imageUrl);
};
container.loadMaskImage(settings.maskImageUrl);
JQmasks.push({
item: container,
id: settings.id
})
return container;
};
}(jQuery));
.temp
{
border: 1px solid #DDDDDD;
display: flex;
background :silver;
}
.container canvas {
display: block;
}
.masked-img {
overflow: hidden;
margin-top: 50px;
position: relative;
}
<script src="https://code.jquery.com/jquery-3.3.1.min.js"></script>
<link
href="https://maxcdn.bootstrapcdn.com/font-awesome/4.3.0/css/font-awesome.min.css"
rel="stylesheet" type='text/css' >
image 1
<input id="fileupa1" type="file">
<div class="container">
</div>
最佳答案
希望这就是你要的结果
var mask1;
$(document).ready(function()
{
var maskedImageUrla = "";
var fontawesome = "<i class='fa fa-user-plus fa-2x'></i>";
var coordinates = {
x: 0,
y: 0
};
var width = 0; var height = 0;
var json = {
"path" : " love shape\/",
"info" : {
"author" : "",
"keywords" : "",
"file" : "love shape",
"date" : "sRGB",
"title" : "",
"description" : "Normal",
"generator" : "Export Kit v1.2.8"
},
"name" : "love shape",
"layers" : [
{
"x" : 0,
"height" : 612,
"layers" : [
{
"x" : 0,
"color" : "0xFFFFFF",
"height" : 612,
"y" : 0,
"width" : 612,
"shapeType" : "rectangle",
"type" : "shape",
"name" : "bg_rectangle_1"
},
{
"x" : 49,
"height" : 480,
"layers" : [
{
"x" : 0,
"height" : 480,
"src" : "hQ45RtK.png",
"y" : 0,
"width" : 514,
"type" : "image",
"name" : "mask_image_1"
},
{
"radius" : "27 \/ 27",
"color" : "0xACACAC",
"x" : 233,
"y" : 205,
"height" : 53,
"width" : 53,
"shapeType" : "ellipse",
"type" : "shape",
"name" : "useradd_ellipse1"
}
],
"y" : 66,
"width" : 514,
"type" : "group",
"name" : "user_image_1"
}
],
"y" : 0,
"width" : 612,
"type" : "group",
"name" : "loveshape_18"
}
]
};
for (let layer of json.layers)
{
width = layer.width;
height = layer.height;
if (layer.layers && layer.layers.length > 0)
{
for (let temp of layer.layers)
{
if (temp.src) maskedImageUrla = temp.src;
else if (temp.layers)
{
for (let tl of temp.layers)
if (tl.src)
{
maskedImageUrla = 'https://i.imgur.com/' + tl.src;
coordinates.x = temp.x;
coordinates.y = temp.y;
}
}
}
}
}
$(".container").css('width', width + "px").css('height', height + "px").addClass('temp');
var mask1 = $(".container").mask({
maskImageUrl: maskedImageUrla,
fontawesome : fontawesome,
onMaskImageCreate: function(img) {
img.css({
"position": "fixed",
"left": coordinates.x + "px",
"top": coordinates.y + "px"
});
}
});
fileupa1.onchange = function() {
mask1.loadImage(URL.createObjectURL(fileupa1.files[0]));
};
}); // end of document ready
// jq plugin for mask
(function($) {
var JQmasks = [];
$.fn.mask = function(options) {
// This is the easiest way to have default options.
var settings = $.extend({
// These are the defaults.
maskImageUrl: undefined,
imageUrl: undefined,
scale: 1,
id: new Date().getUTCMilliseconds().toString(),
x: 0, // image start position
y: 0, // image start position
onMaskImageCreate: function(div) {},
}, options);
var container = $(this);
let prevX = 0,
prevY = 0,
draggable = false,
img,
canvas,
context,
image,
timeout,
initImage = false,
startX = settings.x,
startY = settings.y,
div;
container.mousePosition = function(event) {
return {
x: event.pageX || event.offsetX,
y: event.pageY || event.offsetY
};
}
container.selected = function(ev) {
var pos = container.mousePosition(ev);
var item = $(".masked-img canvas").filter(function() {
var offset = $(this).offset()
var x = pos.x - offset.left;
var y = pos.y - offset.top;
var d = this.getContext('2d').getImageData(x, y, 1, 1).data;
return d[0] > 0
});
JQmasks.forEach(function(el) {
var id = item.length > 0 ? $(item).attr("id") : "";
if (el.id == id)
el.item.enable();
else el.item.disable();
});
};
container.enable = function() {
draggable = true;
$(canvas).attr("active", "true");
div.css({
"z-index": 2
});
}
container.disable = function() {
draggable = false;
$(canvas).attr("active", "false");
div.css({
"z-index": 1
});
}
container.onDragStart = function(evt) {
container.selected(evt);
prevX = evt.clientX;
prevY = evt.clientY;
};
container.getImagePosition = function() {
return {
x: settings.x,
y: settings.y,
scale: settings.scale
};
};
container.onDragOver = function(evt) {
if (draggable && $(canvas).attr("active") === "true") {
var x = settings.x + evt.clientX - prevX;
var y = settings.y + evt.clientY - prevY;
if (x == settings.x && y == settings.y)
return; // position has not changed
settings.x += evt.clientX - prevX;
settings.y += evt.clientY - prevY;
prevX = evt.clientX;
prevY = evt.clientY;
container.updateStyle();
}
};
container.updateStyle = function() {
clearTimeout(timeout);
timeout = setTimeout(function() {
context.clearRect(0, 0, canvas.width, canvas.height);
context.beginPath();
context.globalCompositeOperation = "source-over";
image = new Image();
image.setAttribute('crossOrigin', 'anonymous');
image.src = settings.maskImageUrl;
image.onload = function() {
canvas.width = image.width;
canvas.height = image.height;
context.drawImage(image, 0, 0, image.width, image.height);
div.css({
"width": image.width,
"height": image.height
});
};
img = new Image();
img.src = settings.imageUrl;
img.setAttribute('crossOrigin', 'anonymous');
img.onload = function() {
settings.x = settings.x == 0 && initImage ? (canvas.width - (img.width * settings.scale)) / 2 : settings.x;
settings.y = settings.y == 0 && initImage ? (canvas.height - (img.height * settings.scale)) / 2 : settings.y;
context.globalCompositeOperation = 'source-atop';
context.drawImage(img, settings.x, settings.y, img.width * settings.scale, img.height * settings.scale);
initImage = false;
};
}, 0);
};
// change the draggable image
container.loadImage = function(imageUrl) {
if (img)
img.remove();
// reset the code.
settings.y = startY;
settings.x = startX;
prevX = prevY = 0;
settings.imageUrl = imageUrl;
initImage = true;
container.updateStyle();
};
// change the masked Image
container.loadMaskImage = function(imageUrl, from) {
if (div)
div.remove();
canvas = document.createElement("canvas");
context = canvas.getContext('2d');
canvas.setAttribute("draggable", "true");
canvas.setAttribute("id", settings.id);
settings.maskImageUrl = imageUrl;
div = $("<div/>", {
"class": "masked-img"
}).append(canvas);
div.find("canvas").on('touchstart mousedown', function(event) {
if (event.handled === false) return;
event.handled = true;
container.onDragStart(event);
});
div.find("canvas").on('touchend mouseup', function(event) {
if (event.handled === false) return;
event.handled = true;
container.selected(event);
});
div.find("canvas").bind("dragover", container.onDragOver);
container.append(div);
if (settings.onMaskImageCreate)
settings.onMaskImageCreate(div);
container.loadImage(settings.imageUrl);
};
container.loadMaskImage(settings.maskImageUrl);
JQmasks.push({
item: container,
id: settings.id
})
return container;
};
}(jQuery));
.temp
{
border: 1px solid #DDDDDD;
display: flex;
background :silver;
}
.container
{
position : relative
}
.container i
{
position:absolute;
top:0;
bottom:0;
left:0;
right:0;
margin:auto;
height:20px;
width:20px;
z-index:999;
}
.container canvas {
display: block;
}
.masked-img {
overflow: hidden;
margin-top: 50px;
position: relative;
}
<script src="https://code.jquery.com/jquery-3.3.1.min.js"></script>
<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.2/css/all.css" integrity="sha384-fnmOCqbTlWIlj8LyTjo7mOUStjsKC4pOpQbqyi7RrhN7udi9RwhKkMHpvLbHG9Sr" crossorigin="anonymous">
image 1
<input id="fileupa1" type="file">
<div class="container">
<i class="fas fa-user-plus"></i>
</div>
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