qt实现屏幕底部冒泡效果（qt实现屏幕底部冒泡效果）

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。

qt实现屏幕底部冒泡效果（qt实现屏幕底部冒泡效果）

首先是获取屏幕分辨率，并实现自适应屏幕分辨率。

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 #ifndef VERDESKTOP_H #define VERDESKTOP_H #include <QObject> #include <QDesktopWidget> class VerDesktop : public QObject { Q_OBJECT public: explicit VerDesktop(QObject *parent = 0); float getVerDesktop(); signals: public slots: }; #endif // VERDESKTOP_H

1 2 3 4 5 6 7 8 9 10 11 #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

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 #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_OBJECT public: 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

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 #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); } }