我想剪辑图片的多个区域,
所以我有一个扩展ImageView
这是我的onDraw:
@Override
protected void onDraw(Canvas canvas) {
canvas.clipRect(rect1);
canvas.clipRect(rect2);
super.onDraw(canvas);
}
当我剪辑1个矩形时,它可以正常工作,但是当我有多个时,它根本不会显示任何内容。
更新
我还尝试使用Path剪切:
@Override
protected void onDraw(Canvas canvas) {
canvas.clipPath(path1);
canvas.clipPath(path2);
super.onDraw(canvas);
}
但没有效果
答案 0 :(得分:2)
我找到了解决方案,正在使用:
canvas.clipPath(Path path, Op op);
而不是:
canvas.clipPath(Path path);
使用额外剪辑,这也适用于Rect
和Region
。
我的代码如下:
Path path1 = new Path();
private void init(){
path1.moveTo(100, 100);
path1.lineTo(100, 500);
path1.lineTo(500, 500);
path1.lineTo(500, 100);
path1.close();
}
@Override
protected void onDraw(Canvas canvas) {
canvas.clipPath(path1);
canvas.clipPath(path2, Region.Op.UNION);
canvas.clipPath(path3, Region.Op.UNION);
super.onDraw(canvas);
}
答案 1 :(得分:0)
它将在你的作品中交叉或替换。
请尝试使用clipPath(...)。
即
{
"_id": {
"$oid": "579aa337f36d2808839a05e8"
},
"object_class": "Goods & Services Transaction",
"object_category": "Revenue",
"object_type": "Transaction",
"object_origin": "Sage One",
"object_origin_category": "Bookkeeping",
"object_creation_date": "2016-07-05T00:00:00.201Z",
"party_uuid": "dfa1e80a-5521-11e6-beb8-9e71128cae77",
"connection_uuid": "b945bd7c-7988-4d2a-92f5-8b50ab218e00",
"transaction_reference": "SI-1",
"transaction_status": "UNPAID",
"transaction_date": "2016-06-16T00:00:00.201Z",
"transaction_due_date": "2016-07-15T00:00:00.201Z",
"transaction_currency": "GBP",
"goods_and_services": [
{
"item_identifier": "PROD01",
"item_name": "Product One",
"item_quantity": 1,
"item_gross_unit_sale_value": 1800,
"item_revenue_category": "Sales Revenue",
"item_net_unit_cost_value": null,
"item_net_unit_sale_value": 1500,
"item_unit_tax_value": 300,
"item_net_total_sale_value": 1500,
"item_gross_total_sale_value": 1800,
"item_tax_value": 300
}
],
"transaction_gross_value": 1800,
"transaction_gross_curr_value": 1800,
"transaction_net_value": 1500,
"transaction_cost_value": null,
"transaction_payments_value": null,
"transaction_payment_extras_value": null,
"transaction_tax_value": 300,
"party": {
"customer": {
"customer_identifier": "11",
"customer_name": "KP"
}
}
}
如果由于某种原因,clipPath不起作用,那么构建一个区域并使用clipRegion。
编辑:
根据OPs最终解决方案,还可以在添加剪辑区域时合并区域:
Path p1 = ...;
Path p2 = ...;
p2.addPath(p1);
canvas.clipRect(p2);