删除“编辑”文本,单击“删除”文本

问题描述 投票:0回答:3

背景 :

1.User点击Mask图像

2.Image将上传。

3.Edit&Remove文本将显示

4.用户单击“删除文本”

5.图像和删除文本都消失了

问题 :

编辑文本仍然显示,但编辑文本也应该消失....

video link

$(".remove").click(function(event) {
    const canvasId = "canvas#" + event.currentTarget.id;
    // Delete the image
    const ctx = $("canvas")[event.currentTarget.id].getContext("2d");
    ctx.fillStyle = "white"
    ctx.fillRect(0, 0, 500, 500)
    // Delete the Remove button
    $(this).remove();
    //$(this).edit();
});

Codepen:https://codepen.io/kidsdial/pen/ZZKLOw

小提琴:https://jsfiddle.net/kidsdial1/r2L7w6d3/

代码段:

let openID = null;
var target;
var imageUrl = "https://i.imgur.com/RzEm1WK.png";

let jsonData = {
  "layers" : [
    {
      "x" : 0,
      "height" : 612,
      "layers" : [
        {
          "x" : 160,
          "layers" : [
            {
              "x" : 0,
              "src" : "ax0HVTs.png",
              "y" : 0,
              "height" : 296,
              "width" : 429,
              "name" : "L2b-1"
            }
          ],
          "y" : 291,
          "name" : "user_image_1"
        },
        {
          "x" : 25,
          "layers" : [
            {
              "x" : 0,
              "src" : "hEM2kEP.png",
        "height" : 324,
        "width" : 471,
              "y" : 0,
              "name" : "L2C-1"
            }
          ],
          "y" :22,
          "name" : "L2"
        }
      ],
      "y" : 0,
      "width" : 612,
      "name" : "L1"
    }
  ]
};

$(document).ready(function() {

    // below code will upload image onclick mask image

    $('.container').click(function(e) {

        var res = e.target;
        target = res.id;
        console.log(target);
        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);
            }
        }
    });

    // Below code will 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 = [];

        for (let {
                src,
                x,
                y,
                name
            } of arr) {
            $(".container").css('width', width + "px").css('height', height + "px").addClass('temp');

            //Get Height and width of mask image [ edit button ]
            var ImagePosition = arr;
            //code end

            // Display icon only for mask images

            if (name.indexOf('mask_') !== -1) {
                var imageUrl1 = imageUrl;
            } else {
                var imageUrl1 = '';
            }
            //code end

            var mask = $(".container").mask({
                imageUrl: imageUrl1,
                maskImageUrl: 'https://i.imgur.com/' + src,
                onMaskImageCreate: function(img) {
                    // Mask image positions
                    img.css({
                        "position": "absolute",
                        "left": x + "px",
                        "top": y + "px"
                    });
                    // end

                },
                id: counter
            });
            table.push(mask);
            fileup.onchange = function() {

                let mask2 = table[target];
                const newImageLoadedId = mask2.loadImage(URL.createObjectURL(fileup.files[0]));
                document.getElementById('fileup').value = "";

                //  Edit image

                if ($(".masked-img" + newImageLoadedId).length === 1) {
                    $("<span class=\"pip\">" +
                        "<span class=\"edit\" >Edit </span>" +
                        "</span>").insertAfter(".masked-img" + newImageLoadedId).css({
                        "left": ImagePosition[newImageLoadedId].x + (ImagePosition[newImageLoadedId].width / 2) + "px",
                        "top": ImagePosition[newImageLoadedId].y + (ImagePosition[newImageLoadedId].height / 2) + "px"
                    });
                }
                // Edit code end here....
                //  Remove image

                $("<br/><span id=\"" + newImageLoadedId + "\" class=\"remove\">Remove</span>").insertAfter(".masked-img" + newImageLoadedId).css({
                    "left": ImagePosition[newImageLoadedId].x + (ImagePosition[newImageLoadedId].width / 2) + "px",
                    "top": ImagePosition[newImageLoadedId].y + (ImagePosition[newImageLoadedId].height / 2 +25) + "px"
                });

                $(".remove").click(function(event) {
                    const canvasId = "canvas#" + event.currentTarget.id;
                    // Delete the image
                    const ctx = $("canvas")[event.currentTarget.id].getContext("2d");
                    ctx.fillStyle = "white"
                    ctx.fillRect(0, 0, 500, 500)
                    // Delete the Remove button
                    $(this).remove();
                    //$(this).edit();
                });

                // Remove image code end here....
            };
            counter++;
        }

    }
    json(jsonData);
}); // end of document ready


// jq plugin

(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.getImagePosition = function() {
            return {
                x: settings.x,
                y: settings.y,
                scale: settings.scale
            };
        };



        container.updateStyle = function() {
            return new Promise((resolve, reject) => {
                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
                    });
                    resolve();
                };
            });
        };

        function renderInnerImage() {
            img = new Image();
            img.setAttribute('crossOrigin', 'anonymous');
            img.src = settings.imageUrl;
            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;
            };
        }

        // change the draggable image

        container.loadImage = function(imageUrl) {
            console.log("load");
            //if (img)
            // img.remove();
            // reset the code.
            settings.y = startY;
            settings.x = startX;
            prevX = prevY = 0;
            settings.imageUrl = imageUrl;
            initImage = true;
            container.updateStyle().then(renderInnerImage);
            // sirpepole  Add this
            return settings.id;
        };


        // change the masked Image
        container.loadMaskImage = function(imageUrl, from) {
            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)
            div.find("canvas").on('dragstart', 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
        })
        // Edit image
        div.addClass('masked-img' + settings.id);
        // code end
        return container;
    };
}(jQuery));
.container {
	background: gold;
	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;
}

.txtContainer {
	position: absolute;
	text-align: center;
	color: #FFF
}

.txtContainer:hover {
	background: red;
	padding: 1px;
	border-style: dotted;
}

.pip {
	display: inline-block;
	margin: 0;
	position: absolute;
}

.remove {	
	background: #444;
	border: 1px solid black;
	color: white;
	text-align: center;
	cursor: pointer;
	position: absolute;
	z-index: 3;
}

.remove:hover {
	background: white;
	color: black;
}

.edit {
	display: block;
	background: #444;
	border: 1px solid black;
	color: white;
	text-align: center;
	cursor: pointer;
	position: absolute;
	z-index: 3;
}

.edit:hover {
	background: white;
	color: black;
	position: absolute;
	z-index: 3;
}

.white_content {
	display: none;
	position: absolute;
	top: 25%;
	left: 25%;
	width: 50%;
	height: 50%;
	padding: 16px;
	border: 16px solid orange;
	background-color: white;
	z-index: 1002;
	overflow: auto;
}
<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:none" >

<div class="container">

</div>
javascript jquery
3个回答
0
投票

你的edit按钮是它后面的remove按钮的兄弟。因此,$(this).remove()将只删除remove按钮而不是edit。要专门针对edit按钮使用 - $(this).next().find('.edit').remove()

工作小提琴 - https://jsfiddle.net/zoeb0udm/

如果存在已上传的文件,则不允许上传文件。您可以检查files属性的长度。如果它为零则允许上传文件,否则不要通知用户首先删除所选文件以继续新上传。

const file = document.querySelector('#fileItem');

file.addEventListener('click', function(e) {
    console.log('clicked');
    if(file.files.length !== 0) {
        e.preventDefault();
        alert('Please remove the selected file');
        return;
    }
    console.log('No files selected');
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<input id="fileItem" type="file" multiple>

0
投票

刚刚在删除点击功能中添加了$(this).next().remove();行。重要的是要注意,在删除Remove按钮之前应添加此行。

let openID = null;
var target;
var imageUrl = "https://i.imgur.com/RzEm1WK.png";

let jsonData = {
  "layers" : [
    {
      "x" : 0,
      "height" : 612,
      "layers" : [
        {
          "x" : 160,
          "layers" : [
            {
              "x" : 0,
              "src" : "ax0HVTs.png",
              "y" : 0,
              "height" : 296,
              "width" : 429,
              "name" : "L2b-1"
            }
          ],
          "y" : 291,
          "name" : "user_image_1"
        },
        {
          "x" : 25,
          "layers" : [
            {
              "x" : 0,
              "src" : "hEM2kEP.png",
        "height" : 324,
        "width" : 471,
              "y" : 0,
              "name" : "L2C-1"
            }
          ],
          "y" :22,
          "name" : "L2"
        }
      ],
      "y" : 0,
      "width" : 612,
      "name" : "L1"
    }
  ]
};

$(document).ready(function() {

    // below code will upload image onclick mask image

    $('.container').click(function(e) {

        var res = e.target;
        target = res.id;
        console.log(target);
        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);
            }
        }
    });

    // Below code will 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 = [];

        for (let {
                src,
                x,
                y,
                name
            } of arr) {
            $(".container").css('width', width + "px").css('height', height + "px").addClass('temp');

            //Get Height and width of mask image [ edit button ]
            var ImagePosition = arr;
            //code end

            // Display icon only for mask images

            if (name.indexOf('mask_') !== -1) {
                var imageUrl1 = imageUrl;
            } else {
                var imageUrl1 = '';
            }
            //code end

            var mask = $(".container").mask({
                imageUrl: imageUrl1,
                maskImageUrl: 'https://i.imgur.com/' + src,
                onMaskImageCreate: function(img) {
                    // Mask image positions
                    img.css({
                        "position": "absolute",
                        "left": x + "px",
                        "top": y + "px"
                    });
                    // end

                },
                id: counter
            });
            table.push(mask);
            fileup.onchange = function() {

                let mask2 = table[target];
                const newImageLoadedId = mask2.loadImage(URL.createObjectURL(fileup.files[0]));
                document.getElementById('fileup').value = "";

                    //  Edit image

if ($(".masked-img" + newImageLoadedId).length === 1) {
    $("<span class=\"pip\">" +
        "<span class=\"edit\" >Edit </span>" +
        "</span>").insertAfter(".masked-img" + newImageLoadedId).css({
        "left": ImagePosition[newImageLoadedId].x + (ImagePosition[newImageLoadedId].width / 2) + "px",
        "top": ImagePosition[newImageLoadedId].y + (ImagePosition[newImageLoadedId].height / 2) + "px"
    });
}
                    // Edit code end here....
                    //  Remove image

$("<br/><span id=\"" + newImageLoadedId + "\" class=\"remove\">Remove</span>").insertAfter(".masked-img" + newImageLoadedId).css({
    "left": ImagePosition[newImageLoadedId].x + (ImagePosition[newImageLoadedId].width / 2) + "px",
    "top": ImagePosition[newImageLoadedId].y + (ImagePosition[newImageLoadedId].height / 2 +25) + "px"
});

                $(".remove").click(function(event) {
                    const canvasId = "canvas#" + event.currentTarget.id;
                    // Delete the image
                    const ctx = $("canvas")[event.currentTarget.id].getContext("2d");
                    ctx.fillStyle = "white"
                    ctx.fillRect(0, 0, 500, 500)
                    // Delete the Edit button
                    $(this).next().remove();
                    // Delete the Remove button
                    $(this).remove();
                    //$(this).edit();
                });

                  // Remove image code end here....
            };
            counter++;
        }

    }
    json(jsonData);
}); // end of document ready


// jq plugin

(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.getImagePosition = function() {
            return {
                x: settings.x,
                y: settings.y,
                scale: settings.scale
            };
        };



        container.updateStyle = function() {
            return new Promise((resolve, reject) => {
                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
                    });
                    resolve();
                };
            });
        };

        function renderInnerImage() {
            img = new Image();
            img.setAttribute('crossOrigin', 'anonymous');
            img.src = settings.imageUrl;
            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;
            };
        }

        // change the draggable image

        container.loadImage = function(imageUrl) {
            console.log("load");
            //if (img)
            // img.remove();
            // reset the code.
            settings.y = startY;
            settings.x = startX;
            prevX = prevY = 0;
            settings.imageUrl = imageUrl;
            initImage = true;
            container.updateStyle().then(renderInnerImage);
            // sirpepole  Add this
            return settings.id;
        };


        // change the masked Image
        container.loadMaskImage = function(imageUrl, from) {
            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)
            div.find("canvas").on('dragstart', 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
        })
        // Edit image
        div.addClass('masked-img' + settings.id);
        // code end
        return container;
    };
}(jQuery));
.container {
	background: gold;
	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;
}

.txtContainer {
	position: absolute;
	text-align: center;
	color: #FFF
}

.txtContainer:hover {
	background: red;
	padding: 1px;
	border-style: dotted;
}

.pip {
	display: inline-block;
	margin: 0;
	position: absolute;
}

.remove {	
	background: #444;
	border: 1px solid black;
	color: white;
	text-align: center;
	cursor: pointer;
	position: absolute;
	z-index: 3;
}

.remove:hover {
	background: white;
	color: black;
}

.edit {
	display: block;
	background: #444;
	border: 1px solid black;
	color: white;
	text-align: center;
	cursor: pointer;
	position: absolute;
	z-index: 3;
}

.edit:hover {
	background: white;
	color: black;
	position: absolute;
	z-index: 3;
}

.white_content {
	display: none;
	position: absolute;
	top: 25%;
	left: 25%;
	width: 50%;
	height: 50%;
	padding: 16px;
	border: 16px solid orange;
	background-color: white;
	z-index: 1002;
	overflow: auto;
}
<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:none" >

<div class="container">

</div>

0
投票

我已经在你的jsfiddle中成功测试了它:只需添加$(“。edit”)。remove();

$(".remove").click(function(event) {
    const canvasId = "canvas#" + event.currentTarget.id;
    // Delete the image
    const ctx = $("canvas")[event.currentTarget.id].getContext("2d");
    ctx.fillStyle = "white"
    ctx.fillRect(0, 0, 500, 500)
    // Delete the Remove button
    $(this).remove();
    $(".edit").remove();
    //$(this).edit();
});
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