diff --git a/WebRoot/js/imgpreview/imagepreview.js b/WebRoot/js/imgpreview/imagepreview.js new file mode 100644 index 00000000..a5d97e15 --- /dev/null +++ b/WebRoot/js/imgpreview/imagepreview.js @@ -0,0 +1,113 @@ +function imagepreview(file, view, call) { + + var maxHeight = view.clientHeight, + maxWidth = view.clientWidth, + doc = document; + + function setsize(info, img){ + var iwidth, iheight; + if((info.width / maxWidth) > (info.height / maxHeight)){ + iwidth = maxWidth; + iheight = Math.round(iwidth * info.height / info.width); + } else { + iheight = maxHeight; + iwidth = Math.round(iheight * info.width / info.height); + } + with(view.style){ + height = iheight + "px"; + width = iwidth + "px"; + overflow = "hidden"; + } + if(img){ + with(img.style){ + height = width = "100%"; + } + view.innerHTML = ""; + view.appendChild(img); + } + + } + + try{ + new FileReader(); + file.addEventListener("change", function(e){ + var image = this.files[0]; + function fireError(){ + var evObj = doc.createEvent('Events'); + evObj.initEvent( 'error', true, false ); + file.dispatchEvent(evObj); + file.value = ""; + } + if(!/^image\//.test(image.type)){ + e.stopPropagation(); + e.preventDefault(); + fireError(); + return false; + } + var reader = new FileReader(), + img = new Image(); + reader.onerror = img.onerror = fireError; + img.onload = function(){ + var info = { + height: img.height, + width: img.width, + name: image.name, + size: image.size + }; + if( call(info) !== false ){ + setsize(info, img); + } + img.onload = img.onerror = null; + } + reader.onload = function (){ + img.src = reader.result; + } + reader.readAsDataURL(image); + + }, false); + }catch(ex){ + + file.attachEvent("onchange", function() { + var path = file.value, + tt = doc.createElement("tt"), + name = path.slice(path.lastIndexOf("\\") + 1 ); + + if("XMLHttpRequest" in window){ + file.select(); + path = doc.selection.createRange().text, + doc.selection.empty(); + } + + function imgloader (mode){ + return "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + path + "', sizingMethod='" + mode + "')"; + } + (doc.body || doc.documentElement).appendChild(tt); + with(tt.runtimeStyle){ + filter = imgloader("image"); + zoom = width = height = 1; + position = "absolute"; + right = "9999em"; + top = "-9999em"; + border = 0; + } + var info = { + height: tt.offsetHeight, + width: tt.offsetWidth, + name: name + }; + if( info.height > 1 || info.width > 1 ){ + if(call(info) !== false ){ + view.style.filter = imgloader("scale"); + setsize(info); + } + } else { + file.fireEvent("onerror"); + event.cancelBubble = true; + event.returnValue = false; + this.value = ""; + } + tt.parentNode.removeChild(tt); + }); + } + +} \ No newline at end of file diff --git a/WebRoot/js/imgpreview/imgpreview.html b/WebRoot/js/imgpreview/imgpreview.html new file mode 100644 index 00000000..a84d2bd2 --- /dev/null +++ b/WebRoot/js/imgpreview/imgpreview.html @@ -0,0 +1,110 @@ + + + + +图片上传前预览 + + + + + +
+
+
+
+
浏览
+   + + +
+
+
+
+
+
+ + + + + + diff --git a/WebRoot/js/imgpreview/imgup.css b/WebRoot/js/imgpreview/imgup.css new file mode 100644 index 00000000..aa3ffa4d --- /dev/null +++ b/WebRoot/js/imgpreview/imgup.css @@ -0,0 +1,199 @@ +.preview { + position: relative; + display: block; + margin: auto; +} +.thumb { + border: 1px solid #ccc; + position: relative; + overflow: hidden; +} +.thumb div { + position: relative; + margin: -50px; + left: -50%; + top: -50%; + zoom: 1; +} +.cropaera * { + background: none; + float: none; + padding: 0; + margin: 0; +} +.cropaera { + -webkit-user-select: none; + -moz-user-select: none; + display: inline-block; + position: relative; + user-select: none; + margin: auto; +} +.cropmask { + position: absolute; + overflow: hidden; + height: 100%; + width: 100%; + left: 0; + top: 0; +} +.cropmask .mask_top, +.cropmask .mask_left, +.cropmask .mask_right, +.cropmask .mask_bottom { + filter: progid:DXImageTransform.Microsoft.gradient(startColorStr=#66000000,endColorStr=#66000000); + background: rgba(0,0,0,.4); + overflow: hidden; +} +.cropmask .mask_top { + height: 25%; +} +.cropmask .mask_middle { + height: 50%; +} +.cropmask .mask_middle { + display: table; + width: 100%; +} +.cropmask .mask_middle .mask_left, +.cropmask .mask_middle .mask_right { + width: 25%; +} +.cropmask .mask_middle .mask_left, +.cropmask .mask_middle .mask_right, +.cropmask .mask_middle .mask_center { + display: table-cell; +} +.cropmask .mask_center { + height: 100%; +} +.cropmask .mask_bottom { + height: 100%; + clear: both; +} +.cropmask .viewport { + border: 1px dashed #ccc; + position: relative; + cursor: move; + margin: -1px; + height: 100%; + width: 100%; +} +.cropmask .resize_n, +.cropmask .resize_e, +.cropmask .resize_s, +.cropmask .resize_w { + position: absolute; + height: 5px; + width: 5px; +} +.cropmask .resize_e, +.cropmask .resize_w { + margin: 0 -3px; + height: 100%; + top: 0; +} +.cropmask .resize_n, +.cropmask .resize_s { + margin: -3px 0; + width: 100%; + left: 0; +} +.cropmask .resize_n { + cursor: n-resize; + top: 0; +} +.cropmask .resize_e { + cursor: e-resize; + right: 0; +} +.cropmask .resize_s { + cursor: s-resize; + bottom: 0; +} +.cropmask .resize_w { + cursor: w-resize; + left: 0; +} +.cropmask .point { + border: 1px solid #fff; + position: absolute; + background: #000; + overflow: hidden; + margin: -4px; + opacity: .4; + height: 7px; + width: 7px; + filter: Alpha(Opacity=40); +} +.cropmask .resize .point { + left: 50%; + top: 50%; +} +.cropmask .point_ne { + cursor: ne-resize; + right: 0; + top: 0; +} +.cropmask .point_nw { + cursor: nw-resize; + left: 0; + top: 0; +} +.cropmask .point_se { + cursor: se-resize; + bottom: 0; + right: 0; +} +.cropmask .point_sw { + cursor: sw-resize; + bottom: 0; + left: 0; +} +.cropaera .ondrag .point, +.cropaera .ondrag .resize, +.cropaera .ondrag .viewport { + cursor: inherit; +} +.cropaera .low .resize_e .point, +.cropaera .low .resize_w .point, +.cropaera .narrow .resize_n .point, +.cropaera .narrow .resize_s .point { + display: none; +} +:root .cropmask .mask_top, +:root .cropmask .mask_left, +:root .cropmask .mask_right, +:root .cropmask .mask_bottom, +:root .cropmask .viewport .point { + filter: none; +} +.cropaera { + *height: expression(firstChild.offsetHeight); + *width: expression(firstChild.offsetWidth); + *display: inline; + *zoom: 1; +} +.cropmask { + *height: expression(offsetParent.clientHeight); + *width: expression(offsetParent.clientWidth); +} +.cropmask .mask_middle { + *overflow: hidden; +} +.cropmask .mask_left { + *float: left; + _margin-right: -3px; +} +.cropmask .mask_right { + *float: right; + _margin-left: -3px; +} +.cropmask .mask_left, +.cropmask .mask_right { + *padding-bottom: 999em; + *margin-bottom: -999em; +} +.cropmask .mask_center { + *zoom: 1; +} \ No newline at end of file diff --git a/WebRoot/js/imgpreview/jquery-1.8.3.min.js b/WebRoot/js/imgpreview/jquery-1.8.3.min.js new file mode 100644 index 00000000..83589daa --- /dev/null +++ b/WebRoot/js/imgpreview/jquery-1.8.3.min.js @@ -0,0 +1,2 @@ +/*! 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' + ( islteie7 ? "" : cropmask ) + '
'; + + $.fn.crop = function(onChange, thumb){ + + var aera = $("
").addClass("cropaera").css("position", "relative"), + image = $(this).css("margin", "auto"), + parent = image.parent(); + + if(thumb){ + thumb = $(thumb); + setTimeout(function(){ + thumb.html(""); + thumb.append(image.clone().removeAttr("id").css({ + position: "relative" + })); + setThumb(); + }, 300); + } + + if(parent.hasClass("cropaera")){ + parent.find(".mask_top, .mask_middle, .mask_left, .mask_right").attr("style", ""); + return this; + } + + aera.insertBefore(image); + aera.append(image); + aera.append(cropmask); + + aera.bind("selectstart", function(e){ + e.stopPropagation(); + e.preventDefault(); + return false; + }); + + var drag, + size, + maskbox = aera.find(".cropmask"); + mask = { + bottom: maskbox.find(".mask_bottom"), + middle: maskbox.find(".mask_middle"), + viewport: maskbox.find(".viewport"), + right: maskbox.find(".mask_right"), + left: maskbox.find(".mask_left"), + top: maskbox.find(".mask_top"), + mask: maskbox + }; + + function posint(n){ + return Math.max(n, 0); + } + + function prec(n){ + return Math.round(n * 100) + "%"; + } + + function getSize(){ + return { + aeraHeight: mask.mask.height(), + aeraWidth: mask.mask.width(), + height: mask.middle.height(), + width: mask.viewport.width(), + right: mask.right.width(), + left: mask.left.width(), + top: mask.top.height() + }; + } + + function setThumb(){ + var cropSize = getSize(), + rx = cropSize.aeraWidth / cropSize.width * thumb.width(), + ry = cropSize.aeraHeight / cropSize.height * thumb.height(); + $(thumb.children()).css({ + width: rx, + height: ry, + left: cropSize.left / cropSize.aeraWidth * -rx, + top: cropSize.top / cropSize.aeraHeight * -ry + }); + }; + + var setSize = { + height: function(o) { + mask.middle.height(Math.min(mask.mask.height() - mask.top.height(), posint(size.height + o.y))); + }, + right: function(o) { + mask.right.width(Math.min(mask.mask.width() - mask.left.width(), posint(size.right - o.x))); + }, + left: function(o) { + mask.left.width(Math.min(mask.mask.width() - mask.right.width(), posint(size.left + o.x))); + }, + top: function(o) { + return posint(size.top + o.y); + } + }; + + aera.mousedown(function(e) { + var cursor = $(e.target).css("cursor"); + drag = { + x: e.pageX, + y: e.pageY, + type: cursor.replace(/-resize$/, "") + }; + size = getSize(); + aera.css("cursor", cursor) + mask.mask.addClass("ondrag"); + }) + $(document).bind("mouseup blur",function(e) { + if(drag){ + onChange(getSize()); + } + aera.css("cursor", "") + mask.mask.removeClass("ondrag"); + drag = null; + }).mousemove(function(e) { + if(drag){ + if(thumb){ + setThumb(); + } + var type = drag.type, + offset = { + x: e.pageX - drag.x, + y: e.pageY - drag.y + }; + if(type == "move"){ + if(mask.left.width()){ + setSize.right(offset); + } + if(mask.right.width()){ + setSize.left(offset); + } + + mask.top.height(Math.min(mask.mask.height() - mask.middle.height(), setSize.top(offset))); + } else { + if(/n/.test(type)){ + var top = Math.min(mask.bottom.position().top, setSize.top(offset)); + mask.top.height(top); + mask.middle.height(size.height + size.top - top); + } + if(/w/.test(type)){ + setSize.left(offset); + } + if(/e/.test(type)){ + setSize.right(offset); + } + if(/s/.test(type)){ + setSize.height(offset); + } + } + } + }); + + return this; + }; +})(this, this.jQuery, this.document);