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Add globalAlpha.

This commit is contained in:
Haifeng Luo 2022-04-08 00:04:00 +08:00
parent d476383e81
commit f6785dff87
1 changed files with 6 additions and 0 deletions
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6
web/src/Dataset.js
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@ -301,6 +301,8 @@ class Dataset extends React.Component {
// ctx.fillRect(node.x - bckgDimensions[0] / 2, node.y - bckgDimensions[1] / 2, ...bckgDimensions);
ctx.save();
if (this.state.selectedId === node.id) {
ctx.beginPath();
ctx.arc(node.x, node.y, node.val * 1.7, 0, 2 * Math.PI, false);
@ -311,6 +313,8 @@ class Dataset extends React.Component {
ctx.arc(node.x, node.y, node.val * 1.4, 0, 2 * Math.PI, false);
ctx.fillStyle = 'red';
ctx.fill();
} else if (this.state.selectedId !== null) {
ctx.globalAlpha = 0.3;
}
ctx.beginPath();
@ -326,6 +330,8 @@ class Dataset extends React.Component {
ctx.fillStyle = 'black'; //node.color;
ctx.fillText(node.name, node.x, node.y + 10);
ctx.restore();
}}
/>
)