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有沒有辦法讓兩個fabricJS帆布頂部彼此?我想能夠在兩個畫布上繪製,但我希望我的線只包含在Canvas Top上。 Canvas Bottom將具有不能在Canvas Top上繪製的標籤。另一塊帆布頂部的面料帆布
Crude image of what I'm trying to go for
我以爲我可以疊加兩種畫布在一起,一個在另一個使用CSS的頂部:
<style>
.div {
width: 1550px;
height: 512px;
border: solid 0px #4a7497;
margin-top: -512px;
margin-left: 100px;
position: relative;
}
</style>
<canvas id="canvasBottom" width="1650" height="612"</canvas>
<canvas id="canvasTop" class="div" width="1550" height="512"></canvas>
我的腳本只是呈現底部畫布。在這一點上,我想要做的就是顯示兩個畫布,但在畫布上方有我的線條。
<script type="text/javascript">
$(document).ready(function() {
var canvasBottom = new fabric.Canvas('canvasBottom', { selection: false, backgroundColor: 'black', targetFindTolerance: 20});
var canvas = new fabric.Canvas('canvasTop', { selection: false, backgroundColor: 'white', targetFindTolerance: 20});
canvas.setBackgroundImage('http://website/image/background.png',
canvas.renderAll.bind(canvas));
var grid = 15;
var d = document,
ge = 'getElementById';
//draws vertical lines
for (var i = 1; i <= (<?php echo $yLines; ?>); i++) {
canvas.add(new fabric.Line([ i * grid+100, 0, i * grid+100, 612],{stroke: 'yellow',strokeWidth: 1}));
}
canvas.renderAll();
canvasBottom.renderAll();
});
</script>
檢查這一項:https://stackoverflow.com/a/3008863/7132835 – Observer
我可以堆疊在彼此的頂部帆布div但一旦我開始繪製他們,divs顯示一個另一個 – Stoops