Qt实现窗体在显示屏旁边自动隐藏/显示

#include "AutoHideWidget.h" #include <QVBoxLayout> #include <QPushButton> #include <QStyle> #include <QMouseEvent> #include <QPropertyAnimation> #include <QApplication> #include <QDesktopWidget> AutoHideWidget::AutoHideWidget(QWidget *parent) : QWidget(parent) , m_mouseMovePoint(0, 0) , m_bMousePressed(false) , m_enDriection(None) , m_bIsAutoHide(false) { setWindowFlags(Qt::FramelessWindowHint); resize(250, 500); m_nDesktopWidth = QApplication::desktop()->width(); init(); } AutoHideWidget::~AutoHideWidget() { } void AutoHideWidget::init() { m_pTitleWidget = new QWidget(this); m_pTitleWidget->setFixedHeight(36); m_pTitleWidget->setStyleSheet("background-color: #25A7E9;"); m_pTitleWidget->installEventFilter(this); QPushButton *pCloseButton = new QPushButton(this); pCloseButton->setFixedSize(25, 25); pCloseButton->setIcon(style()->standardIcon(QStyle::SP_TitleBarCloseButton)); pCloseButton->setFlat(true); pCloseButton->setStyleSheet("QPushButton" "{" "border: none;" "}" "QPushButton:hover" "{" "background: #30B7EA;" "}"); connect(pCloseButton, SIGNAL(clicked()), this, SLOT(close())); QHBoxLayout *pTitleLayout = new QHBoxLayout; pTitleLayout->setContentsMargins(0,0,10,0); pTitleLayout->addStretch(); pTitleLayout->addWidget(pCloseButton); m_pTitleWidget->setLayout(pTitleLayout); m_pContentWidget = new QWidget(this); QVBoxLayout *pMainlayout = new QVBoxLayout; pMainlayout->setMargin(0); pMainlayout->setSpacing(0); pMainlayout->addWidget(m_pTitleWidget); pMainlayout->addWidget(m_pContentWidget); this->setLayout(pMainlayout); } void AutoHideWidget::isAutoHide() { QPoint pos = this->pos(); m_bIsAutoHide = true; if (pos.x() < 2) { m_enDriection = Left; } else if (pos.y() < 2) { m_enDriection = Up; } else if (this->pos().x() + this->width() > m_nDesktopWidth - 2) { m_enDriection = Right; } else { m_enDriection = None; m_bIsAutoHide = false; } } void AutoHideWidget::hideWidget() { QPropertyAnimation *animation = new QPropertyAnimation(this, "geometry"); animation->setDuration(100); animation->setStartValue(QRect(this->pos(), this->size())); QRect rcEnd; if (m_enDriection & Up) { rcEnd = QRect(this->x(), -this->height() + 2, this->size().width(), this->rect().height()); } else if (m_enDriection & Left) { rcEnd = QRect(-this->width() + 2, this->y(), this->size().width(), this->rect().height()); } else if (m_enDriection & Right) { rcEnd = QRect(m_nDesktopWidth - 2, this->y(), this->size().width(), this->rect().height()); } animation->setEndValue(rcEnd); animation->start(); } void AutoHideWidget::showWidget() { QPoint pos = this->pos(); QPropertyAnimation *animation = new QPropertyAnimation(this, "geometry"); animation->setDuration(100); animation->setStartValue(QRect(pos, this->size())); QRect rcEnd; if (m_enDriection & Up) { rcEnd = QRect(this->x(), 0, this->size().width(), this->rect().height()); } else if (m_enDriection & Left) { rcEnd = QRect(0, this->y(), this->size().width(), this->rect().height()); } else if (m_enDriection & Right) { rcEnd = QRect(m_nDesktopWidth - this->width(), this->y(), this->size().width(), this->rect().height()); } animation->setEndValue(rcEnd); animation->start(); } bool AutoHideWidget::eventFilter(QObject *watched, QEvent *event) { if (m_pTitleWidget == watched) { QMouseEvent *pMouseEvent = dynamic_cast<QMouseEvent*>(event); if (pMouseEvent != NULL) { if (pMouseEvent->type() == QEvent::MouseButtonPress) { if (pMouseEvent->button() == Qt::LeftButton) { m_bMousePressed = true; m_mouseMovePoint = pMouseEvent->pos(); } } else if (m_bMousePressed && pMouseEvent->type() == QEvent::MouseMove) { if (!this->isMaximized()) { QPoint movePoint = pMouseEvent->globalPos(); this->move(movePoint - m_mouseMovePoint); } } else if (pMouseEvent->type() == QEvent::MouseButtonRelease) { m_bMousePressed = false; } } } return QWidget::eventFilter(watched, event); } bool AutoHideWidget::event(QEvent *event) { if (m_bMousePressed && event->type() == QEvent::Move) { QMoveEvent *pMoveEvent = dynamic_cast<QMoveEvent *>(event); if (pMoveEvent != NULL) { QPoint pos = pMoveEvent->pos(); if (pos.x() < 0) { pos.setX(0); } if (pos.y() < 0) { pos.setY(0); } if (pos.x() + this->width() > m_nDesktopWidth) { pos.setX(m_nDesktopWidth - this->width()); } event->ignore(); this->move(pos); } } return QWidget::event(event); } void AutoHideWidget::leaveEvent(QEvent *event) { isAutoHide(); if (m_bIsAutoHide) { hideWidget(); } } void AutoHideWidget::enterEvent(QEvent *event) { if (m_bIsAutoHide) { showWidget(); } }