kindeditor 限制上传图片大小及宽高

进入：/kindeditor/plugins/image/image.js，替换其中的 self.plugin.imageDialog = function (options)方法，代码为：

self.plugin.imageDialog = function (options) {
        var imageUrl = options.imageUrl,
			imageWidth = K.undef(options.imageWidth, ''),
			imageHeight = K.undef(options.imageHeight, ''),
			imageTitle = K.undef(options.imageTitle, ''),
			imageAlign = K.undef(options.imageAlign, ''),
            　　　　　　　imageSize = options.imageSize*1024,
			showRemote = K.undef(options.showRemote, true),
			showLocal = K.undef(options.showLocal, true),
			tabIndex = K.undef(options.tabIndex, 0),
			clickFn = options.clickFn;
        var target = 'kindeditor_upload_iframe_' + new Date().getTime();
        var hiddenElements = [];
        for (var k in extraParams) {
            hiddenElements.push('<input type="hidden" name="' + k + '" value="' + extraParams[k] + '" />');
        }
        var html = [
			'<div style="padding:20px;">',
			//tabs
			'<div class="tabs"></div>',
			//remote image - start
			'<div class="tab1" style="display:none;">',
			//url
			'<div class="ke-dialog-row">',
			'<label for="remoteUrl" style="width:60px;">' + lang.remoteUrl + '</label>',
			'<input type="text" id="remoteUrl" class="ke-input-text" name="url" value="" style="width:200px;" />  ',
			'<span class="ke-button-common ke-button-outer">',
			'<input type="button" class="ke-button-common ke-button" name="viewServer" value="' + lang.viewServer + '" />',
			'</span>',
			'</div>',
			//size
			'<div class="ke-dialog-row">',
			'<label for="remoteWidth" style="width:60px;">' + lang.size + '</label>',
			lang.width + ' <input type="text" id="remoteWidth" class="ke-input-text ke-input-number" name="width" value="" maxlength="4" /> ',
			lang.height + ' <input type="text" class="ke-input-text ke-input-number" name="height" value="" maxlength="4" /> ',
			'<img class="ke-refresh-btn" src="' + imgPath + 'refresh.png" width="16" height="16" alt="" style="cursor:pointer;" title="' + lang.resetSize + '" />',
			'</div>',
			//align
			'<div class="ke-dialog-row">',
			'<label style="width:60px;">' + lang.align + '</label>',
			'<input type="radio" name="align" class="ke-inline-block" value="" checked="checked" /> <img name="defaultImg" src="' + imgPath + 'align_top.gif" width="23" height="25" alt="" />',
			' <input type="radio" name="align" class="ke-inline-block" value="left" /> <img name="leftImg" src="' + imgPath + 'align_left.gif" width="23" height="25" alt="" />',
			' <input type="radio" name="align" class="ke-inline-block" value="right" /> <img name="rightImg" src="' + imgPath + 'align_right.gif" width="23" height="25" alt="" />',
			'</div>',
			//title
			'<div class="ke-dialog-row">',
			'<label for="remoteTitle" style="width:60px;">' + lang.imgTitle + '</label>',
			'<input type="text" id="remoteTitle" class="ke-input-text" name="title" value="" style="width:200px;" />',
			'</div>',
			'</div>',
			//remote image - end
			//local upload - start
			'<div class="tab2" style="display:none;">',
			'<iframe name="' + target + '" style="display:none;"></iframe>',
			'<form class="ke-upload-area ke-form" method="post" enctype="multipart/form-data" target="' + target + '" action="' + K.addParam(uploadJson, 'dir=image') + '">',
			//file
			'<div class="ke-dialog-row">',
			hiddenElements.join(''),
			'<label style="width:60px;">' + lang.localUrl + '</label>',
			'<input type="text" name="localUrl" class="ke-input-text" tabindex="-1" style="width:200px;" readonly="true" />  ',
			'<input type="button" class="ke-upload-button" value="' + lang.upload + '" />',
			'</div>',
			'</form>',
			'</div>',
			//local upload - end
			'</div>'
        ].join('');
        var dialogWidth = showLocal || allowFileManager ? 450 : 400,
			dialogHeight = showLocal && showRemote ? 300 : 250;
        var dialog = self.createDialog({
            name: name,
            width: dialogWidth,
            height: dialogHeight,
            title: self.lang(name),
            body: html,
            yesBtn: {
                name: self.lang('yes'),
                click: function (e) {
                    // Bugfix: http://code.google.com/p/kindeditor/issues/detail?id=319
                    if (dialog.isLoading) {
                        return;
                    }

                    var f = uploadbutton.fileBox[0].files[0];
                    var reader = new FileReader();
                    reader.onload = function (e) {
                        var data = e.target.result;
                        //加载图片获取图片真实宽度和高度
                        var image = new Image();
                        image.onload = function () {
                            var width = image.width;
                            var height = image.height;
                            if (f.size > imageSize) {
                                alert("图片大小超过限制");
                                return;

                            }

                            if (width != imageWidth || height != imageHeight) {
                                alert("图片尺寸不对");
                                return;
                            }

                            // insert local image
                            if (showLocal && showRemote && tabs && tabs.selectedIndex === 1 || !showRemote) {
                                if (uploadbutton.fileBox.val() == '') {
                                    alert(self.lang('pleaseSelectFile'));
                                    return;
                                }
                                dialog.showLoading(self.lang('uploadLoading'));
                                uploadbutton.submit();
                                localUrlBox.val('');
                                return;
                            }
                            // insert remote image
                            var url = K.trim(urlBox.val()),
                                width = widthBox.val(),
                                height = heightBox.val(),
                                title = titleBox.val(),
                                align = '';
                            alignBox.each(function () {
                                if (this.checked) {
                                    align = this.value;
                                    return false;
                                }
                            });

                            if (url == 'http://' || K.invalidUrl(url)) {
                                alert(self.lang('invalidUrl'));
                                urlBox[0].focus();
                                return;
                            }
                            if (!/^\d*$/.test(width)) {
                                alert(self.lang('invalidWidth'));
                                widthBox[0].focus();
                                return;
                            }
                            if (!/^\d*$/.test(height)) {
                                alert(self.lang('invalidHeight'));
                                heightBox[0].focus();
                                return;
                            }
                            clickFn.call(self, url, title, width, height, 0, align);

                        };
                        image.src = data;
                    };
                    reader.readAsDataURL(f);

                }
            },
            beforeRemove: function () {
                viewServerBtn.unbind();
                widthBox.unbind();
                heightBox.unbind();
                refreshBtn.unbind();
            }
        }),
		div = dialog.div;

        var urlBox = K('[name="url"]', div),
			localUrlBox = K('[name="localUrl"]', div),
			viewServerBtn = K('[name="viewServer"]', div),
			widthBox = K('.tab1 [name="width"]', div),
			heightBox = K('.tab1 [name="height"]', div),
			refreshBtn = K('.ke-refresh-btn', div),
			titleBox = K('.tab1 [name="title"]', div),
			alignBox = K('.tab1 [name="align"]', div);

        var tabs;
        if (showRemote && showLocal) {
            tabs = K.tabs({
                src: K('.tabs', div),
                afterSelect: function (i) { }
            });
            tabs.add({
                title: lang.remoteImage,
                panel: K('.tab1', div)
            });
            tabs.add({
                title: lang.localImage,
                panel: K('.tab2', div)
            });
            tabs.select(tabIndex);
        } else if (showRemote) {
            K('.tab1', div).show();
        } else if (showLocal) {
            K('.tab2', div).show();
        }

        var uploadbutton = K.uploadbutton({
            button: K('.ke-upload-button', div)[0],
            fieldName: filePostName,
            form: K('.ke-form', div),
            target: target,
            width: 60,
            afterUpload: function (data) {
                dialog.hideLoading();
                if (data.error === 0) {
                    var url = data.url;
                    if (formatUploadUrl) {
                        url = K.formatUrl(url, 'absolute');
                    }
                    if (self.afterUpload) {
                        self.afterUpload.call(self, url, data, name);
                    }
                    if (!fillDescAfterUploadImage) {
                        clickFn.call(self, url, data.title, data.width, data.height, data.border, data.align);
                    } else {
                        K(".ke-dialog-row #remoteUrl", div).val(url);
                        K(".ke-tabs-li", div)[0].click();
                        K(".ke-refresh-btn", div).click();
                    }
                } else {
                    alert(data.message);
                }
            },
            afterError: function (html) {
                dialog.hideLoading();
                self.errorDialog(html);
            }
        });
        uploadbutton.fileBox.change(function (e) {
            localUrlBox.val(uploadbutton.fileBox.val());
        });
        if (allowFileManager) {
            viewServerBtn.click(function (e) {
                self.loadPlugin('filemanager', function () {
                    self.plugin.filemanagerDialog({
                        viewType: 'VIEW',
                        dirName: 'image',
                        clickFn: function (url, title) {
                            if (self.dialogs.length > 1) {
                                K('[name="url"]', div).val(url);
                                if (self.afterSelectFile) {
                                    self.afterSelectFile.call(self, url);
                                }
                                self.hideDialog();
                            }
                        }
                    });
                });
            });
        } else {
            viewServerBtn.hide();
        }
        var originalWidth = 0, originalHeight = 0;
        function setSize(width, height) {
            widthBox.val(width);
            heightBox.val(height);
            originalWidth = width;
            originalHeight = height;
        }
        refreshBtn.click(function (e) {
            var tempImg = K('<img src="' + urlBox.val() + '" />', document).css({
                position: 'absolute',
                visibility: 'hidden',
                top: 0,
                left: '-1000px'
            });
            tempImg.bind('load', function () {
                setSize(tempImg.width(), tempImg.height());
                tempImg.remove();
            });
            K(document.body).append(tempImg);
        });
        widthBox.change(function (e) {
            if (originalWidth > 0) {
                heightBox.val(Math.round(originalHeight / originalWidth * parseInt(this.value, 10)));
            }
        });
        heightBox.change(function (e) {
            if (originalHeight > 0) {
                widthBox.val(Math.round(originalWidth / originalHeight * parseInt(this.value, 10)));
            }
        });
        urlBox.val(options.imageUrl);
        setSize(options.imageWidth, options.imageHeight);
        titleBox.val(options.imageTitle);
        alignBox.each(function () {
            if (this.value === options.imageAlign) {
                this.checked = true;
                return false;
            }
        });
        if (showRemote && tabIndex === 0) {
            urlBox[0].focus();
            urlBox[0].select();
        }
        return dialog;
    };