Qt 实现桌面右下角消息弹窗提示

2013-11-06 11:29:14 _小明阅读数 4476更多

分类专栏： Qt笔记

本文链接：https://blog.csdn.net/u012739657/article/details/14224161

简单的做了一个类似QQ消息提示的消息弹窗提示的小模块，便于在系统后台程序提示检测的信息，使用Qt开发，设计整体思路是做一个无框架的widget，自己实现标题栏和内容栏，添加了向上移出，自动消隐退出效果，窗体简单，模块结构便于以后进行扩展和移植，旨在显示文字信息，通过按钮操作与主程序进行通信，运行结果如图

Qt 实现桌面右下角消息弹窗提示

一、弹窗主体部分 class widget

#include "widget.h"
#include "titlewidget.h"
#include <QVBoxLayout>
#include "mypushbutton.h"
#include <QLabel>
#include <QPainter>
#include <QBitmap>
#include <QDesktopWidget>
#include <QApplication>
#include <QTimer>
#include <QDesktopServices>
Widget::Widget(QWidget *parent) :
QWidget(parent)
{
setWindowFlags(Qt::FramelessWindowHint|Qt::WindowStaysOnTopHint);
isEnter = false;
titleW=new titleWidget;
connect(titleW,SIGNAL(myClose()),this,SLOT(close()));
content=new QLabel;
content->setWordWrap(true);
content->setAlignment(Qt::AlignTop);
content->setFixedSize(300,100);
btnLook=new myPushButton("look.png","查看");
connect(btnLook,SIGNAL(clicked()),this,SLOT(seeInfo()));
QVBoxLayout*mainLayout=new QVBoxLayout;
mainLayout->setMargin(0);
mainLayout->addWidget(titleW);
mainLayout->addWidget(content);
content->setMargin(5);
mainLayout->addWidget(btnLook,0,Qt::AlignRight);
setLayout(mainLayout);
setFixedSize(sizeHint().width(),sizeHint().height());
timerShow=new QTimer(this);
connect(timerShow,SIGNAL(timeout()),this,SLOT(myMove()));
timerStay=new QTimer(this);
connect(timerStay,SIGNAL(timeout()),this,SLOT(myStay()));
timerClose=new QTimer(this);
connect(timerClose,SIGNAL(timeout()),this,SLOT(myClose()));
}
Widget::~Widget()
{
}
void Widget::setMsg(QString title, QString content, QString work)
{
titleW->setTitleText(" "+title);
this->content->setText(" "+content);
}
void Widget::paintEvent(QPaintEvent *)
{
QBitmap bitmap(this->size());
bitmap.fill(Qt::white);
QPainter painter(this);
painter.setBrush(QBrush(QColor(250,240,230)));
painter.setPen(QPen(QBrush(QColor(255,222,173)),4));
painter.drawRoundedRect(bitmap.rect(),5,5);
setMask(bitmap);
}
void Widget::showAsQQ()
{
QDesktopWidget *deskTop=QApplication::desktop();
deskRect=deskTop->availableGeometry();
normalPoint.setX(deskRect.width()-rect().width()-1);
normalPoint.setY(deskRect.height()-rect().height());
move(normalPoint.x(),deskRect.height()-1);
show();
timerShow->start(5);
}
//平滑显示出来
void Widget::myMove()
{
static int beginY=QApplication::desktop()->height();
beginY--;
move(normalPoint.x(),beginY);
if(beginY<=normalPoint.y())
{
timerShow->stop();
timerStay->start(1000);
}
}
//停留显示
void Widget::myStay()
{
static int timeCount=0;
timeCount++;
if(timeCount>=9)
{
timerStay->stop();
timerClose->start(200);
}
}
//自动关闭时实现淡出效果
void Widget::myClose()
{
static double tran=1.0;
if(isEnter){
tran = 1.0;
setWindowOpacity(tran);
return;
}
tran-=0.1;
if(tran<=0.0)
{
timerClose->stop();
emit close();
}
else
setWindowOpacity(tran);
}
void Widget::seeInfo()
{
}
void Widget::enterEvent(QEvent *)
{
isEnter = true;
}
void Widget::leaveEvent(QEvent *)
{
isEnter = false;
}

二、标题部分与自定义按钮部分

//标题类 class titlewidget
#include "titlewidget.h"
#include <QLabel>
#include <QToolButton>
#include <QHBoxLayout>
#include <QPainter>
#include <QLinearGradient>
#include <QIcon>
titleWidget::titleWidget(QWidget *parent) :
QWidget(parent)
{
titleText=new QLabel;
btnClose = new QToolButton(this);
btnClose->setObjectName(QString::fromUtf8("btnClose"));
btnClose->setToolTip(tr("关闭"));
btnClose->setStyleSheet(QString::fromUtf8("QWidget[objectName=\"btnClose\"]{\n"
"border-width: 0px;\n"
"border-style: solid;\n"
"padding: 0px;\n"
"padding-left: 0px;\n"
"padding-right: 0px;\n"
"min-width: 16px;\n"
"max-width: 16px;\n"
"min-height: 16px;\n"
"max-height: 16px;\n"
"background-image: url(:/Resources/btn_close_normal.bmp);\n"
"}\n"
"\n"
"QWidget[objectName=\"btnClose\"]:hover{\n"
"background-image: url(:/Resources/btn_close_highlight.bmp);\n"
"}\n"
"\n"
"QWidget[objectName=\"btnClose\"]:pressed{\n"
"background-image: url(:/Resources/btn_close_down.bmp);\n"
"}\n"
""));
connect(btnClose,SIGNAL(clicked()),this,SIGNAL(myClose()));
QHBoxLayout *layout=new QHBoxLayout;
layout->addWidget(titleText,0,Qt::AlignLeft);
layout->addStretch();
layout->addWidget(btnClose,0,Qt::AlignRight);
layout->setMargin(0);
setLayout(layout);
setFixedHeight(20);
}
void titleWidget::paintEvent(QPaintEvent *)
{
QLinearGradient linear(rect().topLeft(),rect().bottomRight());
linear.setColorAt(0,QColor(227,207,87));
linear.setColorAt(0.5,QColor(245,222,179));
linear.setColorAt(1,QColor(189,252,201));
QPainter painter(this);
painter.setBrush(QBrush(linear));
painter.setPen(Qt::NoPen);
painter.drawRect(rect());
}
void titleWidget::setTitleText(QString title)
{
titleText->setText(title);
}
//按钮类：class mypushbutton
#include "mypushbutton.h"
#include <QPalette>
#include <QPixmap>
#include <QCursor>
myPushButton::myPushButton(QWidget *parent) :
QPushButton(parent)
{
}
myPushButton::myPushButton(QString iconStr,QString textStr, QWidget *parent):QPushButton(parent)
{
QPixmap pixmap(":/Resources/"+iconStr);
setIcon(QIcon(pixmap));
setIconSize(pixmap.size());
setText(textStr);
resize(pixmap.size());
setBkPalette(0);//设置背景完全透明
setFlat(true);
setAutoFillBackground(true);
}
void myPushButton::setBkPalette(int transparency)//设置背景透明度
{
QPalette palette;
palette.setBrush(QPalette::Button,QBrush(QColor(255,255,255,transparency)));
setPalette(palette);
}
void myPushButton::enterEvent(QEvent *)
{
setCursor(Qt::PointingHandCursor);
}
void myPushButton::leaveEvent(QEvent *)
{
setCursor(Qt::CustomCursor);
}
void myPushButton::mousePressEvent(QMouseEvent *e)
{
}
void myPushButton::mouseReleaseEvent(QMouseEvent *e)
{
emit clicked();
}