使用Flexbox和Enyo时,我无法调整画布的坐标系的大小。请参阅以下示例:http : //jsfiddle.net/g7MLS/1989/
首次运行时,一切都很好。缩小框的宽度,文本行保持1行,直到画布达到最小宽度为止,然后文本开始换行。
要查看该问题,请取消注释以下行:
c.width = b.width;
c.height = b.height;
Flexbox现在似乎正在使用内部坐标宽度来排列事物或其他事物。现在,在画布缩小到最小宽度之前,文本将开始自动换行。
没有Enyo,我无法复制确切的设置,但是这很接近,似乎并没有做同样的事情:https ://jsfiddle.net/ez6b2q8v/103/
以我的理解,设置画布的宽度/高度应该只影响内部坐标,而不影响画布本身的大小。我想念什么?
var ready = require('enyo/ready'),
kind = require('enyo/kind'),
Toolbar = require('onyx/Toolbar'),
Application = require('enyo/Application'),
Button = require('enyo/Button');
ready(function() {
var MySample = kind({
name: "MySample",
rendered: function() {
this.inherited(arguments);
c = this.$.myCanvas.hasNode();
b = this.$.myCanvas.getBounds()
//c.width = b.width;
//c.height = b.height;
console.log(c.width);
},
buttonTapped: function(inSender, inEvent) {
this.render();
return true;
},
components: [{
classes: "main",
components: [{
classes: "content",
components: [{
classes: "canvas",
tag: "canvas",
name: "myCanvas"
}, {
classes: "label",
content: "This text should be on 1 line, but wrap when canvas == min-width"
}]
}, {
kind: Button,
ontap: "buttonTapped",
content: "Render",
}]
}],
});
app = new Application({
view: MySample
});
});
.main {
position: relative;
margin: 0px;
padding: 0px;
box-sizing: border-box;
background: red;
}
.content {
order: 0;
display: flex;
background: yellow;
flex: 1 1 auto;
}
.canvas {
padding: 4px;
margin: auto;
min-width: 100px;
flex: 1 1 auto;
height: 40px;
background: blue;
box-sizing: border-box;
}
.label{
flex: 0 1 auto;
}
在没有CSS尺寸的情况下,画布的height
和width
也将用作尺寸。如果您指定的CSS尺寸与属性不同,则画布将变形以固定指定的尺寸。请参见HTML5中的Canvas宽度和高度。
如果要使用flex布局调整画布的内部坐标,则必须处理小提琴中显示的调整大小。在Enyo中,您可以handleResize
向MySample添加方法来更新画布的属性。
kind({
name: "MySample",
rendered: function () {
this.inherited(arguments);
this.setupCanvas();
},
handleResize: function () {
this.inherited(arguments);
this.setupCanvas();
},
setupCanvas: function() {
var c = this.$.myCanvas.hasNode();
var b = this.$.myCanvas.getBounds()
c.width = b.width;
c.height = b.height;
},
buttonTapped: function(inSender, inEvent) {
this.render();
return true;
},
components: [{
classes: "main",
components: [{
classes: "content",
components: [{
classes: "canvas",
tag: "canvas",
name: "myCanvas"
}, {
classes: "label",
content: "This text should be on 1 line, but wrap when canvas == min-width"
}]
}, {
kind: Button,
ontap: "buttonTapped",
content: "Render",
}]
}],
});
本文收集自互联网,转载请注明来源。
如有侵权,请联系[email protected] 删除。
我来说两句