【发布时间】：2019-11-27 02:17:32
【问题描述】：
我们通过获取 json 来显示盒子图像和遮罩图像。
用户将点击面具图像并上传自己的图像。
问题：
Onclick 保存按钮，掩码图像和用户上传的图像都保存在服务器中，如下所示....
要求：
但是 Onclick 保存按钮，我只需要在服务器上保存 用户上传的图像。
以下是用户上传的图片：
HTML
<button class ="save" onclick="test()">Save image to server</button>
脚本
function test() {
var canvas = document.getElementById("1");
var dataURL = canvas.toDataURL(); // THE BASE 64 DATA
var dataFileName = document.getElementById('fileup').value.replace(/.*(\/|\\)/, ''); // GET THE FILE NAME THAT USER CHOSE
var dataFileType = dataFileName.split('.').pop();
$.ajax({
type: "POST",
url: "save.php",
data: {
imgBase64: dataURL,
imgFileName: dataFileName,
imgFileType: dataFileType
}
}).done(function(o, imgFileName) {
console.log(o);
var response = JSON.parse(o);
console.log(response);
$('body').prepend('<img src="' + dataFileName + '" style="height: 200px; width: auto;">');
});
}
save.php
<?php
ini_set('display_errors', 1);
ini_set('display_startup_errors', 1);
error_reporting(E_ALL);
if (isset($_POST['imgBase64']) && isset($_POST['imgFileName']) && isset($_POST['imgFileType'])) {
$fname = filter_input(INPUT_POST, 'imgFileName'); // THE FILENAME THE USER CHOSE IS RECEIVED VIA POST
$img = filter_input(INPUT_POST, 'imgBase64'); // THE BASE64 ENCODING RECEIVED VIA POST
$imgtype = filter_input(INPUT_POST, 'imgFileType'); // THE FILE TYPE / EXTENSION IS RECEIVED VIA POST
if ($imgtype === 'png') {
$img = str_replace('data:image/png;base64,', '', $img);
};
if ($imgtype === 'jpg') {
$img = str_replace('data:image/png;base64,', '', $img);
};
$imgtype = "png";
$fn_array = explode(".",$fname);
unset($fn_array[count($fn_array)-1]);
$fileName = join($fn_array).".".$imgtype;
// REPLACE ALL SPACES IN THE IMAGE DATA WITH PLUS SYMBOL
$img = str_replace(' ', '+', $img);
// CONVERT THE DATA FROM BASE64 ENCODING
$img = base64_decode($img);
// SAVE THE FILE WITH NAME SYNTAX :
file_put_contents('/var/www/html/ecom1/site/test/save/' . $fileName, $img);
echo '{"error":false, "message":null,"data":[{"msg": "Image has been saved successfully!", "fileName": "' . $fileName . '"}]}';
}
?>
以下是片段中的完整代码：
var target;
const imageUrl = "";
let jsonData = {
"layers": [{
"x": 0,
"height": 200,
"layers": [{
"type": "image",
"name": "bg_img",
"x": 0,
"y": 0,
"width": 200,
"height": 200,
"src": "14IVyVb.png",
},
{
"type": "image",
"src": "l8vA9bB.png",
"name": "mask_userimg",
"x": 10,
"y": 15,
"width": 180,
"height": 166
}
],
"y": 0,
"width": 200
}]
};
const containerElement = $('#container');
const fileUp = $('#fileup');
let mask;
$(function() {
// Upload image onclick mask image
containerElement.click(function(e) {
var res = e.target;
target = res.id;
if (e.target.getContext) {
// click only inside Non Transparent part
var pixel = e.target.getContext('2d').getImageData(e.offsetX, e.offsetY, 1, 1).data;
if (pixel[3] === 255) {
setTimeout(() => {
$('#fileup').click();
}, 20);
}
}
});
// Fetch mask images from json file
function getAllSrc(layers) {
let arr = [];
layers.forEach(layer => {
if (layer.src) {
arr.push({
src: layer.src,
x: layer.x,
y: layer.y,
height: layer.height,
width: layer.width,
name: layer.name
});
} else if (layer.layers) {
let newArr = getAllSrc(layer.layers);
if (newArr.length > 0) {
newArr.forEach(({
src,
x,
y,
height,
width,
name
}) => {
arr.push({
src,
x: (layer.x + x),
y: (layer.y + y),
height,
width,
name: (name)
});
});
}
}
});
return arr;
}
function json(data) {
var width = 0;
var height = 0;
let arr = getAllSrc(data.layers);
let layer1 = data.layers;
width = layer1[0].width;
height = layer1[0].height;
let counter = 0;
let table = [];
containerElement.css('width', width + "px").css('height', height + "px").addClass('temp');
for (let {
src,
x,
y,
name
} of arr) {
var ImagePosition = arr;
var imageUrl1 = imageUrl;
var mask = $(".container").mask({
imageUrl: name.indexOf('mask_') !== -1 ? imageUrl1 : undefined,
// Mask images
maskImageUrl: 'https://i.imgur.com/' + src,
// end
onMaskImageCreate: function(img) {
// Mask image positions
img.css({
"position": "absolute",
"left": x + "px",
"top": y + "px"
});
// end
},
id: counter
});
ImagePosition.map(function(cur, index) {
var available = cur.name.includes('mask_');
if (!available) {
$('.masked-img' + index).css('pointer-events', 'none');
}
});
table.push(mask);
fileup.onchange = function() {
let mask2 = table[target];
const newImageLoadedId = mask2.loadImage(URL.createObjectURL(fileup.files[0]));
//document.getElementById('fileup').value = "";
};
counter++;
}
return mask;
}
mask = json(jsonData);
}); // end of function
// Image code
(function($) {
window.JQmasks = [];
$.fn.mask = function(options) {
// This is the easiest way to have default options.
const 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) {},
rotate: 0,
}, options);
// Create the image properties
settings.maskImage = new Image
settings.image = new Image
// set the cross-origin attributes
settings.maskImage.setAttribute('crossOrigin', 'anonymous');
settings.image.setAttribute('crossOrigin', 'anonymous');
settings.maskImage.onload = function() {
// once the mask is loaded, load the image
container.loadImage(settings.imageUrl, true)
container.drawMask()
}
settings.image.onload = function() {
// once the image is loaded, render to canvas
container.drawImage()
}
var container = $(this);
let prevX = 0,
prevY = 0,
draggable = false,
img,
canvas,
context,
image,
timeout,
initImage = false,
startX = settings.x,
startY = settings.y,
scale = settings.scale,
div;
container.drawMask = function() {
if (!settings.maskImage) return true;
canvas.width = settings.maskImage.width;
canvas.height = settings.maskImage.height;
context.save();
context.beginPath();
context.globalCompositeOperation = "source-over";
// draw the masked image after scaling
if (settings.maskImage)
context.drawImage(settings.maskImage, 0, 0, settings.maskImage.width, settings.maskImage
.height);
context.restore()
};
container.drawImage = function() {
const img = settings.image
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.save();
context.translate(settings.x + img.width / 2, settings.y + img.height / 2);
context.rotate(settings.rotate);
context.scale(settings.scale, settings.scale);
context.translate(-(settings.x + img.width / 2), -(settings.y + img.height / 2));
let width = img.width,
height = img.height;
if (img)
context.drawImage(img, settings.x, settings.y, width, height);
context.restore();
initImage = false;
}
container.loadImage = function(imageUrl, isMask) {
if (!imageUrl) return true;
settings.y = startY;
settings.x = startX;
settings.scale = 1;
settings.rotate = 0;
prevX = prevY = 0;
initImage = true;
settings.image.src = imageUrl; // CHANGED
if (!isMask)
container.data('image_set' + settings.id, true)
return settings.id;
};
container.loadMaskImage = function(imageUrl, from) {
// console.log('loading mask image from', imageUrl, from)
canvas = document.createElement("canvas");
context = canvas.getContext('2d');
canvas.setAttribute("draggable", "true");
canvas.setAttribute("id", settings.id);
// settings.maskImageUrl = imageUrl;
settings.maskImage.src = imageUrl // CHANGED
div = $("<div/>", {
"class": "masked-img"
}).append(canvas);
container.append(div);
if (settings.onMaskImageCreate)
settings.onMaskImageCreate(div);
};
if (settings.maskImageUrl) {
container.loadMaskImage(settings.maskImageUrl);
}
JQmasks.push({
item: container,
id: settings.id
})
// Edit image
div.addClass('masked-img' + settings.id);
div.attr('data-id', settings.id);
// ends
return container;
};
}(jQuery));
//Download image to server
function test() {
var canvas = document.getElementById("1");
var dataURL = canvas.toDataURL(); // THE BASE 64 DATA
var dataFileName = document.getElementById('fileup').value.replace(/.*(\/|\\)/, ''); // GET THE FILE NAME THAT USER CHOSE
var dataFileType = dataFileName.split('.').pop();
$.ajax({
type: "POST",
url: "raju.php",
data: {
imgBase64: dataURL,
imgFileName: dataFileName,
imgFileType: dataFileType
}
}).done(function(o, imgFileName) {
console.log(o);
var response = JSON.parse(o);
console.log(response);
$('body').prepend('<img src="' + dataFileName + '" style="height: 200px; width: auto;">');
});
}.save {
font-size:20px;
}
.container {
background: silver;
position: relative;
}
.container img {
position: absolute;
top: 0;
bottom: 250px;
left: 0;
right: 0;
margin: auto;
z-index: 999;
}
.masked-img {
overflow: hidden;
position: relative;
}<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<input id="fileup" name="fileup" type="file" style="display:block">
<div id="container" class="container">
</div>
<button class ="save" onclick="test()">Save image to server</button>【问题讨论】：
标签： javascript php jquery image html5-canvas