Javascript 将画布调整为其父元素离子网格
我正在Ionic 3中构建一个组件,该组件放置一个图像网格,并用画布覆盖层连接它们。我使用了爱奥尼亚的Javascript 将画布调整为其父元素离子网格,javascript,html,canvas,flexbox,ionic3,Javascript,Html,Canvas,Flexbox,Ionic3,我正在Ionic 3中构建一个组件,该组件放置一个图像网格,并用画布覆盖层连接它们。我使用了爱奥尼亚的离子网格,但当我尝试调整画布大小时,我找不到容器的正确尺寸,因此画布容器保持其初始大小。我想让它动态,所以我需要画布具有与网格容器相同的大小。这是我的密码: <ion-content> <ion-card> <div ion-card-content> <div ion-grid id= "container-gra
离子网格
,但当我尝试调整画布大小时,我找不到容器的正确尺寸,因此画布容器保持其初始大小。我想让它动态,所以我需要画布具有与网格容器相同的大小。这是我的密码:
<ion-content>
<ion-card>
<div ion-card-content>
<div ion-grid id= "container-graph">
<ion-row responsive-sm>
<canvas id="connection-canvas" style="position: absolute;"></canvas>
</ion-row>
<ion-row responsive-sm>
<ion-col col-6 text-center>
Generation
<img id="generation" src="../../assets/img/solar-panel.png">
</ion-col>
<ion-col col-6 text-center>
Grid
<img id="grid" src="../../assets/img/grid.png">
</ion-col>
</ion-row>
<ion-row responsive-sm>
<img id="inverter" src="../../assets/img/logo.png">
</ion-row>
<ion-row responsive-sm>
<ion-col col-6 text-center>
Battery
<img id="battery" src="../../assets/img/battery.png">
</ion-col>
<ion-col col-6 text-center>
Consumption
<img id="consumption" src="../../assets/img/house.png">
</ion-col>
</ion-row>
</div>
</div>
</ion-card>
<ion-card>
<ion-card-content>
{{description}}
</ion-card-content>
</ion-card>
</ion-content>
public drawGraphs (center:string, a:string, b:string, c:string, d:string){
var canvas: any = document.getElementById("connection-canvas");
var connectionGraph: any = document.getElementById("container-graph");
canvas.width = connectionGraph.clientWidth;
canvas.height = connectionGraph.clientHeight;
var elCenter = document.getElementById(center);
var contCenter = elCenter.getBoundingClientRect();
var elA = document.getElementById(a);
this.drawLine(elCenter,elA);
var elB = document.getElementById(b);
this.drawLine(elCenter,elB);
var elC = document.getElementById(c);
this.drawLine(elCenter,elC);
var elD = document.getElementById(d);
this.drawLine(elCenter,elD);
}
一代
网格
电池
消耗
{{description}}
公共绘图(中心:字符串、a:字符串、b:字符串、c:字符串、d:字符串){
var canvas:any=document.getElementById(“连接画布”);
var connectionGraph:any=document.getElementById(“容器图”);
canvas.width=connectionGraph.clientWidth;
canvas.height=connectionGraph.clientHeight;
var elCenter=document.getElementById(中心);
var contCenter=elCenter.getBoundingClientRect();
var elA=document.getElementById(a);
这是一条拉丝(elCenter,elA);
var elB=document.getElementById(b);
本图为抽绳(elCenter,elB);
var elC=document.getElementById(c);
这条吊线(elC中心、elC);
var elD=document.getElementById(d);
这条吊线(elCenter,elD);
}
我刚刚找到了一个可行的解决方案。在使用lifecycle钩子界面对视图进行完全渲染后,我调用函数“drawgraphs”,检查后查看。
我刚刚找到了一个可行的解决办法。在使用lifecycle钩子界面对视图进行完全渲染后,我调用函数“drawgraphs”,检查后查看。
ngAfterViewChecked(){
this.drawGraphs("inverter", "generation", "grid", "battery", "consumption")}