我要求通过传递名称它应该返回一个头像 icon包含该名称中包含的单词的第一个字母。例如,如果我通过John Abraham它应该返回一个图标'JA'。我需要在sapui5控件中使用该图标。我对此没有任何想法。如何实现这一点?感谢任何帮助。
我需要像这样的头像图标。你可以看到带有字母V的图标。avatar icon
谢谢,
答案 0 :(得分:2)
画布回答是在正确的轨道上,但在您的情况下,您需要一个数据网址,您可以将其分配给您的控件src
或icon
属性。
以下示例中的generateAvatar
函数将名称(字符串)转换为图像数据url(在url中将图像包含为base64 gif)。可以将数据URL分配给UI5控件上的Buttons icon property或任何其他图像url属性。您甚至可以将它用作带数据绑定的格式化程序函数,如下例所示。
var model = new sap.ui.model.json.JSONModel({
name: "John Doe"
});
new sap.m.Input({value:"{/name}", valueLiveUpdate:true}).setModel(model).placeAt("body");
new sap.m.Button({
icon:{path: "/name", formatter: generateAvatar},
text:"Hello"
}).setModel(model).placeAt("body");
function generateAvatar(name){
var initials = name.split(' ').map(function(str) { return str ? str[0].toUpperCase() : "";}).join('');
var canvas = document.createElement('canvas');
var radius = 30;
var margin = 5;
canvas.width = radius*2+margin*2;
canvas.height = radius*2+margin*2;
// Get the drawing context
var ctx = canvas.getContext('2d');
ctx.beginPath();
ctx.arc(radius+margin,radius+margin,radius, 0, 2 * Math.PI, false);
ctx.closePath();
ctx.fillStyle = 'grey';
ctx.fill();
ctx.fillStyle = "white";
ctx.font = "bold 30px Arial";
ctx.textAlign = 'center';
ctx.fillText(initials, radius+5,radius*4/3+margin);
return canvas.toDataURL();
//The canvas will never be added to the document.
}
上的示例
答案 1 :(得分:1)
答案 2 :(得分:1)
自UI5 1.46.x 起,此类头像图标控件即可使用。
<Avatar xmlns="sap.m"|"sap.f"*
initials="{ path: 'name', formatter: '.createInitials' }"
displayShape="Square"
/>
* sap.f
(如果UI5版本低于1.73)。否则,请改用Avatar
中的sap.m
!
createInitials: function(name) { // minimal sample
return name.split(" ").map(str => str[0]).join("");
},
可以在https://openui5.hana.ondemand.com/entity/sap.m.Avatar中找到更多示例。
答案 3 :(得分:0)
分叉@Sathvik Cheela代码以满足您的要求:
dormant
console.clear()
var CVS = document.createElement('canvas'),
ctx = CVS.getContext('2d');
CVS.width = 500;
CVS.height = 500;
document.body.appendChild(CVS); // Add canvas to DOM
// Transform input text
function transformText(text) {
return text
.split(' ')
.map((str) => str ? str[0].toUpperCase() : "")
.join('')
}
// GRAPHICS TO CANVAS /////
function sendToCanvas(ob) {
var img = new Image();
img.onload = function() {
ctx.drawImage(img, 0, 0);
ctx.font = ob.fontWeight + ' ' + ob.fontSize + ' ' + ob.fontFamily;
ctx.textAlign = 'center';
ctx.fillStyle = ob.color;
ctx.fillText(transformText(ob.text), CVS.width - 350, CVS.height / 3);
};
img.src = ob.image;
}
///////////////////////////
// DO IT! /////////////////
var cvsObj = {
image: "http://www.polyvore.com/cgi/img-thing?.out=jpg&size=l&tid=31228042",
text: "john doe",
fontFamily: "Arial",
fontWeight: "bold",
fontSize: "30px",
color: "rgba(0, 0, 0, 0.7)"
};
sendToCanvas(cvsObj);
document.getElementById('input').addEventListener('input', function() {
cvsObj.text = this.value;
sendToCanvas(cvsObj);
}, false);
答案 4 :(得分:0)
您可以为此创建自定义UI5控件。它也支持数据绑定:)
JSBin上的示例:
var NameIcon = sap.ui.core.Control.extend("NameIcon", { // call the new Control type "NameIcon" and let it inherit
// from sap.ui.core.Control
// the Control API:
metadata : {
properties : { // setter and getter are created behind the scenes,
// incl. data binding and type validation
"name" : "string", // in simple cases, just define the type
"size" : {type: "sap.ui.core.CSSSize", defaultValue: "40px"}
// you can also give a default value and more
}
},
// the part creating the HTML:
renderer : function(oRm, oControl) { // static function, so use the given "oControl" instance
// instead of "this" in the renderer function
oRm.write("<div");
oRm.writeControlData(oControl); // writes the Control ID and enables event handling - important!
oRm.addStyle("width", oControl.getSize()); // write the Control property size; the Control has validated it
// to be a CSS size
oRm.addStyle("height", oControl.getSize());
oRm.addStyle("border-radius", "50%");
oRm.addStyle("text-align","center"); //Center text
oRm.addStyle("vertical-align","middle");
oRm.addStyle("line-height", oControl.getSize());
oRm.addStyle("font-family","Arial,Helvetica,sans-serif;")
oRm.addStyle("background-color", "steelblue");
oRm.addStyle("color","white")
oRm.writeStyles();
//oRm.addClass("sapMTitle"); // add a CSS class for styles common to all Control instances
oRm.writeClasses(); // this call writes the above class plus enables support
// for Square.addStyleClass(...)
oRm.write(">");
oRm.writeEscaped(oControl.getInitials()); // write another Control property, with protection
// against cross-site-scripting
oRm.write("</div>");
},
getInitials:function(){
var name = this.getName();
if (!name) return "";
var parts = name.split(" ");
var result = parts.map(function(p){return p.charAt(0).toLocaleUpperCase();}).join("");
return result;
},
// an event handler:
onclick : function(evt) { // is called when the Control's area is clicked - no event registration required
alert("Control clicked! Text of the Control is:\n" + this.getText());
}
});