ismoothpixmaplabel.cpp
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#include "ismoothpixmaplabel.h"
#include <QPainter>
#include <QBitmap>
#include <QSize>
#include <QPixmap>
ISmoothPixmapLabel::ISmoothPixmapLabel(QWidget *parent) :
QLabel(parent)
{
isMousein = false;
setAttribute(Qt::WA_TranslucentBackground);
}
void ISmoothPixmapLabel::resizeEvent(QResizeEvent * event )
{
// int side = qMin(width(), height());
// //QRegion maskedRegion(width() / 2 - side / 2, height() / 2 - side / 2, side, side, QRegion::Ellipse);
// QRegion maskedRegion(this->width()-2, 2, this->width(), this->height(), QRegion::Ellipse);
// setMask(maskedRegion);
QPainterPath path;
QRectF rect = QRectF(0,0,width(),height());
path.addRoundRect(rect,10,10);
QPolygon polygon= path.toFillPolygon().toPolygon();//获得这个路径上的所有的点
QRegion region(polygon);//根据这个点构造这个区域
setMask(region);
}
void ISmoothPixmapLabel::enterEvent(QEvent *)
{
if(isMousein)
{
return;
}
isMousein = true;
emit mouseIn();
}
void ISmoothPixmapLabel::mousePressEvent(QMouseEvent *ev)
{
emit mousePress();
}
void ISmoothPixmapLabel::leaveEvent(QEvent *)
{
isMousein = false;
emit mouseOut();
}
void ISmoothPixmapLabel::paintEvent(QPaintEvent *event)
{
if (!event) return;
QLabel::paintEvent(event);
QPainter painter(this);
// painter.setRenderHints(QPainter::SmoothPixmapTransform);//消锯齿
// QBitmap maskImage("E:\project\LiveChat\LiveChat\bin\debug\img\145766289369756.jpg"); //蒙板图片
// QPixmap iconImage("E:\project\LiveChat\LiveChat\bin\debug\img\145766289369756.jpg");
// iconImage.setMask(maskImage);
//// icon = icon.scaled(QSize(54,54));
//// icon.setMask(maskImage);
// painter.drawPixmap(0, 0, iconImage);
}