27 lines
648 B
C++
27 lines
648 B
C++
|
#include "maskLayer.h"
|
|||
|
|
#include <QPainter>
|
|||
|
|
#include <QStyleOption>
|
|||
|
|
|
|||
|
|
MaskLayer::MaskLayer(QWidget *parent)
|
|||
|
|
: QWidget(parent)
|
|||
|
|
{
|
|||
|
|
setObjectName("maskLayer");
|
|||
|
|
setFocusPolicy(Qt::NoFocus);
|
|||
|
|
setAttribute(Qt::WA_TranslucentBackground); // 启用透明背景
|
|||
|
|
setStyleSheet("background:rgba(112,128,144,180);");
|
|||
|
|
hide();
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
MaskLayer::~MaskLayer()
|
|||
|
|
{}
|
|||
|
|
|
|||
|
|
//重写paintEvent触发背景绘制，否则实例化对象不显示
|
|||
|
|
void MaskLayer::paintEvent(QPaintEvent *event)
|
|||
|
|
{
|
|||
|
|
QStyleOption opt;
|
|||
|
|
opt.initFrom(this);
|
|||
|
|
QPainter p(this);
|
|||
|
|
style()->drawPrimitive(QStyle::PE_Widget, &opt, &p, this);
|
|||
|
|
QWidget::paintEvent(event);
|
|||
|
|
}
|