在Qt局域网聊天程序的到的东西太多了，最想和大家分享的是关于局域网聊天信息的冒泡，他的设计也不是特别难，我写了一个类分享给大家。

可能各位道友有更好的办法，但希望不要拆台哦。

该类中有一部分适应屏幕分辨率的类，也一并加入。如有不懂的欢迎大家留言。

首先是获取屏幕分辨率，并实现自适应屏幕分辨率。

#ifndef VERDESKTOP_H#define VERDESKTOP_H #include <QObject>#include <QDesktopWidget> class VerDesktop : public QObject{ Q_OBJECTpublic: explicit VerDesktop(QObject *parent = 0); float getVerDesktop(); signals: public slots:}; #endif // VERDESKTOP_H#include "verdesktop.h" VerDesktop::VerDesktop(QObject *parent) : QObject(parent){}float VerDesktop::getVerDesktop(){ QDesktopWidget dw; float ver=float(dw.screenGeometry().width())/float(1920); return ver;}

以下是冒泡的代码

#ifndef MESSAGEDIALOG_H#define MESSAGEDIALOG_H#include <QDialog>#include <QPropertyAnimation>#include <QLabel>#include "verdesktop.h"#include <QTimer>#include <QPaintEvent>#include <QPainter> class MessageDialog : public QDialog{ Q_OBJECTpublic: float ver; VerDesktop *v;//适应屏幕分辨率 explicit MessageDialog(QWidget *parent=0); QLabel *imagelabel;//头像 QLabel *namelabel;//名 void messagedialogseting();//设置 QTimer *timer0;private: void paintEvent(QPaintEvent *event); public slots: void timerout();}; #endif // MESSAGEDIALOG_H#include "messagedialog.h"#include <QApplication>#include <QDesktopWidget>#include <QGraphicsDropShadowEffect>#include <QPalette> MessageDialog::MessageDialog(QWidget *parent):QDialog(parent){ v=new VerDesktop(this); ver=v->getVerDesktop(); messagedialogseting(); connect(timer0,SIGNAL(timeout()),this,SLOT(timerout()));}void MessageDialog::messagedialogseting()//显现的动画{ QPalette palette(this->palette()); palette.setColor(QPalette::Background,QColor(49,225,215)); setPalette(palette); setAutoFillBackground(true); setWindowFlags(Qt::FramelessWindowHint|windowFlags()); QRect rect=QApplication::desktop()->availableGeometry(); setGeometry(rect.width()-250*ver,rect.height()-80*ver,250*ver,80*ver); QGraphicsDropShadowEffect *effect=new QGraphicsDropShadowEffect(this); effect->setOffset(10,10); effect->setBlurRadius(10); effect->setColor(QColor(50,50,50)); this->setGraphicsEffect(effect); imagelabel=new QLabel(this); namelabel=new QLabel(this); imagelabel->setGeometry(5*ver,15*ver,50*ver,50*ver); namelabel->setGeometry(90*ver,0,150*ver,80*ver); namelabel->setFont(QFont("微软雅黑",15*ver)); namelabel->setAlignment(Qt::AlignCenter); QPropertyAnimation *animation0=new QPropertyAnimation(this,"geometry"); animation0->setDuration(500*ver); animation0->setStartValue(QRect(rect.width(),rect.height()-80*ver,250*ver,80*ver));//起点 animation0->setEndValue(QRect(rect.width()-250*ver,rect.height()-80*ver,250*ver,80*ver));//终点 animation0->start(QAbstractAnimation::DeleteWhenStopped); timer0=new QTimer(this); timer0->start(1000);}void MessageDialog::timerout()//消失的动画{ timer0->stop(); QPropertyAnimation *animation0=new QPropertyAnimation(this,"windowOpacity"); animation0->setDuration(500); animation0->setStartValue(1); animation0->setEndValue(0); animation0->start(QAbstractAnimation::DeleteWhenStopped); connect(animation0,SIGNAL(finished()),this,SLOT(close()));}void MessageDialog::paintEvent(QPaintEvent *event)//做阴影{ const int x=3; Q_UNUSED(event); QPainterPath yinying_path; yinying_path.setFillRule(Qt::WindingFill); yinying_path.addRect(x,x,this->width()-2*x,this->height()-2*x); QPainter painter(this); painter.setRenderHint(QPainter::Antialiasing,true); QColor color(0,0,0,50); for(int i=0;i<x;i++) { QPainterPath path; path.setFillRule(Qt::WindingFill); path.addRect(x-i, x-i, this->width()-(x-i)*2, this->height()-(x-i)*2); color.setAlpha(150 - sqrt(i)*50); painter.setPen(color); painter.drawPath(path); }}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。