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ImageButton.cpp
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103 lines (90 loc) · 2.17 KB
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#include "imagebutton.h"
#include <QtWidgets>
#include <QPixmap>
ImageButton::ImageButton(QString normalName, QString horverName, QString pressName,int icon_x,int icon_y,QWidget *parent)
: QPushButton(parent)
//设置按钮初始状态
, curStatus_(ST_INIT)
{
//设置按钮状态为正常
curStatus_ = ST_NORMAL;
//存储按钮三态图片
//正常图片
imageName_[ST_NORMAL] = normalName;
//悬停图片
imageName_[ST_HOVER] = horverName;
//按下图片
imageName_[ST_PRESS] = pressName;
//获得图片的大小以便用来调整按钮的大小
QPixmap icon;
icon.load(normalName);
this->icon_width=icon.width();
this->icon_height=icon.height();
this->setGeometry(icon_x,icon_y,icon_width,icon_height);
}
//按钮进入事件
void ImageButton::enterEvent(QEvent *)
{
if (curStatus_ == ST_INIT)
{
return;
}
curStatus_ = ST_NORMAL;
update();
}
//按钮离开事件
void ImageButton::leaveEvent(QEvent *)
{
if (curStatus_ == ST_INIT)
{
return;
}
curStatus_ = ST_NORMAL;
update();
}
//按钮按下事件
void ImageButton::mousePressEvent(QMouseEvent *event)
{
if (curStatus_ == ST_INIT)
{
return;
}
//如果鼠标左键点击
if (event->button() == Qt::LeftButton)
{
//将按钮状态设置为按下，并绘图
curStatus_ = ST_PRESS;
update();
}
}
//按钮释放事件
void ImageButton::mouseReleaseEvent(QMouseEvent *event)
{
//如果鼠标左键释放
if (event->button() == Qt::LeftButton)
{
if (curStatus_ != ST_INIT)
{
//将按钮状态设置为悬停，并绘图
curStatus_ = ST_HOVER;
update();
}
}
// 鼠标在弹起的时候光标在按钮上才激发clicked信号
if (rect().contains(event->pos()))
{
emit clicked();
}
}
//按钮样式绘图
void ImageButton::paintEvent(QPaintEvent *event)
{
if (curStatus_ == ST_INIT)
{
QPushButton::paintEvent(event);
return;
}
QPainter painter(this);
QPixmap pixmap(imageName_[curStatus_]);
painter.drawPixmap(rect(), pixmap);
}