C++ QDropEvent::accept方法代码示例

bool QLineEdit::event( QEvent * e )
{
#if 0 // it works, but we'll wait with enabling it.
    if ( !e )
	return QWidget::event( e );

    if ( e->type() == Event_DragEnter ) {
	if ( ((QDragEnterEvent *) e)->provides( "text/plain" ) ) {
	    ((QDragEnterEvent *) e)->accept( rect() );
	    return TRUE;
	}
    } else if ( e->type() == Event_DragLeave ) {
	return TRUE;
    } else if ( e->type() == Event_Drop ) {
	QDropEvent * de = (QDropEvent *) e;
	QString str;
	if ( QTextDrag::decode( de, str ) ) {
	    if ( !hasMarkedText() ) {
		int margin = frame() ? 2 : 0;
		setCursorPosition( xPosToCursorPos( &tbuf[(int)offset],
						    fontMetrics(),
						    de->pos().x() - margin,
						    width() - 2*margin ) );
	    }
	    insert( str );
	    de->accept();
	} else {
	    de->ignore();
	}
	return TRUE;
    }
#endif
    return QWidget::event( e );
}

bool CloudView::eventFilter(QObject *obj, QEvent *event)
{
    if (obj == mHeader) {
        static QPoint oldPos;
        if (event->type() == QEvent::MouseButtonPress) {
            QMouseEvent *ev = (QMouseEvent *)event;
            oldPos = ev->globalPos();

            return true;

        } else if (event->type() == QEvent::MouseMove) {
            QMouseEvent *ev = (QMouseEvent *)event;
            const QPoint delta = ev->globalPos() - oldPos;

            MainWindow *win = seafApplet->mainWindow();
            win->move(win->x() + delta.x(), win->y() + delta.y());

            oldPos = ev->globalPos();
            return true;
        }

    } else if (obj == mDropArea) {
        if (event->type() == QEvent::DragEnter) {
            QDragEnterEvent *ev = (QDragEnterEvent *)event;
            if (ev->mimeData()->hasUrls() && ev->mimeData()->urls().size() == 1) {
                const QUrl url = ev->mimeData()->urls().at(0);
                if (url.scheme() == "file") {
                    QString path = url.toLocalFile();
#if defined(Q_OS_MAC) && (QT_VERSION <= QT_VERSION_CHECK(5, 4, 0))
                    path = utils::mac::fix_file_id_url(path);
#endif
                    if (QFileInfo(path).isDir()) {
                        ev->acceptProposedAction();
                    }
                }
            }
            return true;
        } else if (event->type() == QEvent::Drop) {
            QDropEvent *ev = (QDropEvent *)event;
            const QUrl url = ev->mimeData()->urls().at(0);
            QString path = url.toLocalFile();
#if defined(Q_OS_MAC) && (QT_VERSION <= QT_VERSION_CHECK(5, 4, 0))
            path = utils::mac::fix_file_id_url(path);
#endif
            ev->setDropAction(Qt::CopyAction);
            ev->accept();
            showCreateRepoDialog(path);
            return true;
        }
    }

    return QWidget::eventFilter(obj, event);
}

bool ContextHelp::eventFilter( QObject * watched, QEvent * e )
{
// 	kDebug() << k_funcinfo << "watched="<<watched<<endl;
	
	if ( (watched != m_pEditor) && (watched != m_pEditor->editorViewport()) )
		return false;
	
	switch ( e->type() )
	{
		case QEvent::DragEnter:
		{
			QDragEnterEvent * dragEnter = static_cast<QDragEnterEvent*>(e);
			
			if ( !QString( dragEnter->format() ).startsWith("ktechlab/") )
				break;
			
			dragEnter->acceptAction();
			return true;
		}
			
		case QEvent::Drop:
		{
			QDropEvent * dropEvent = static_cast<QDropEvent*>(e);
			
			if ( !QString( dropEvent->format() ).startsWith("ktechlab/") )
				break;
			
			dropEvent->accept();
			
			QString type;
			QDataStream stream( dropEvent->encodedData( dropEvent->format() ) /*, IO_ReadOnly */ );
			stream >> type;
			
			LibraryItem * li = itemLibrary()->libraryItem( type );
			if ( !li )
				return true;
			
			m_pEditor->insertURL( "ktechlab-help:///" + type, li->name() );
			return true;
		}
			
		default:
			break;
	}
	
	return false;
}

bool SessionListWidget::event(QEvent *event)
{
#ifndef QUTIM_MOBILE_UI
	if (event->type() == QEvent::ToolTip) {
		if (QHelpEvent *help = static_cast<QHelpEvent*>(event)) {
			int index = indexAt(help->pos()).row();
			if (index != -1) {
				ChatUnit *unit = session(index)->getUnit();
				ToolTip::instance()->showText(help->globalPos(), unit, this);
				return true;
			}
		}
	} else if (event->type() == QEvent::DragEnter) {
		QDragEnterEvent *dragEvent = static_cast<QDragEnterEvent*>(event);
		if (const MimeObjectData *data = qobject_cast<const MimeObjectData*>(dragEvent->mimeData())) {
			ChatUnit *u = qobject_cast<ChatUnit*>(data->object());
			if (u)
				dragEvent->acceptProposedAction();
		}
		return true;
	} else if (event->type() == QEvent::Drop) {
		QDropEvent *dropEvent = static_cast<QDropEvent*>(event);
		if (const MimeObjectData *mimeData
				= qobject_cast<const MimeObjectData*>(dropEvent->mimeData())) {
			if (ChatUnit *u = qobject_cast<ChatUnit*>(mimeData->object())) {
				ChatLayerImpl::get(u,true)->activate();
				dropEvent->setDropAction(Qt::CopyAction);
				dropEvent->accept();
				return true;
			}
		}
	} else 
#endif
	if (event->type() == QEvent::ContextMenu) {
		QContextMenuEvent *ev = static_cast<QContextMenuEvent*>(event);
		ChatSessionImpl *s = session(row(itemAt(ev->pos())));
		if(s) {
			s->unit()->showMenu(ev->globalPos());
			return true;
		}

	}
	return QListWidget::event(event);
}

    bool ArticleViewPrivate::eventFilter(QObject * obj, QEvent * event)
    {
        //qDebug() << "eventFilter" << obj << event;

        const AbstractBibliographicModel * model = qobject_cast< const AbstractBibliographicModel * >(view ? origin(view->model()) : 0);

        // Only filter the view's events
        if (model && obj == view->viewport()) {
            switch (event->type()) {
            case QEvent::DragMove:
            case QEvent::DragEnter: {
                QDropEvent * e = static_cast< QDropEvent * >(event);
                if ((dropping = model->acceptsDrop(e->mimeData()))) {
                    view->viewport()->update();
                    e->accept();
                } else {
                    e->ignore();
                }
                //qDebug() << "---" << dropping;
                return true;
                break;
            }
            case QEvent::DragLeave:
                dropping = false;
                view->viewport()->update();
                break;
            case QEvent::Drop:
                dropping = false;
                view->viewport()->update();
                break;
            default:
                break;
            }
        }

        return QObject::eventFilter(obj, event);
    }

bool HashBox::eventFilter(QObject* object, QEvent* event)
{
	if (object == dropWidget) {
		if (event->type() == QEvent::DragEnter) {
			QDragEnterEvent* dragEnterEvent = static_cast<QDragEnterEvent*>(event);
			if (dragEnterEvent) {
				/* print out mimeType */
				showFormats("HashBox::dragEnterEvent", dragEnterEvent->mimeData()->formats());

				if (dragEnterEvent->mimeData()->hasUrls()) {
					std::cerr << "HashBox::dragEnterEvent() Accepting Urls" << std::endl;
					dragEnterEvent->acceptProposedAction();
				} else {
					std::cerr << "HashBox::dragEnterEvent() No Urls" << std::endl;
				}
			}
		} else if (event->type() == QEvent::Drop) {
			QDropEvent* dropEvent = static_cast<QDropEvent*>(event);
			if (dropEvent) {
				if (Qt::CopyAction & dropEvent->possibleActions()) {
					/* print out mimeType */
					showFormats("HashBox::dropEvent", dropEvent->mimeData()->formats());

					QStringList files;

					if (dropEvent->mimeData()->hasUrls()) {
						std::cerr << "HashBox::dropEvent() Urls:" << std::endl;

						QList<QUrl> urls = dropEvent->mimeData()->urls();
						QList<QUrl>::iterator uit;
						for (uit = urls.begin(); uit != urls.end(); ++uit) {
							QString localpath = uit->toLocalFile();
							std::cerr << "Whole URL: " << uit->toString().toStdString() << std::endl;
							std::cerr << "or As Local File: " << localpath.toStdString() << std::endl;

							if (localpath.isEmpty() == false) {
								//Check that the file does exist and is not a directory
								QDir dir(localpath);
								if (dir.exists()) {
									std::cerr << "HashBox::dropEvent() directory not accepted." << std::endl;
									QMessageBox mb(tr("Drop file error."), tr("Directory can't be dropped, only files are accepted."), QMessageBox::Information, QMessageBox::Ok, 0, 0, this);
									mb.exec();
								} else if (QFile::exists(localpath)) {
									files.push_back(localpath);
								} else {
									std::cerr << "HashBox::dropEvent() file does not exists."<< std::endl;
									QMessageBox mb(tr("Drop file error."), tr("File not found or file name not accepted."), QMessageBox::Information, QMessageBox::Ok, 0, 0, this);
									mb.exec();
								}
							}
						}
					}

					addAttachments(files,mDefaultTransferFlags);

					dropEvent->setDropAction(Qt::CopyAction);
					dropEvent->accept();
				} else {
					std::cerr << "HashBox::dropEvent() Rejecting uncopyable DropAction" << std::endl;
				}
			}
		}
	}
	// pass the event on to the parent class
	return QScrollArea::eventFilter(object, event);
}

bool BookmarkToolBar::eventFilter(QObject *watched, QEvent *event)
{
    if (m_currentMenu && m_currentMenu->isVisible()
            && !m_currentMenu->rect().contains(m_currentMenu->mapFromGlobal(QCursor::pos())))
    {
        // To switch root folders as in a menubar

        KBookmarkActionMenu* act = dynamic_cast<KBookmarkActionMenu *>(actionAt(mapFromGlobal(QCursor::pos())));

        if (event->type() == QEvent::MouseMove && act && act->menu() != m_currentMenu)
        {
            m_currentMenu->hide();
            QPoint pos = mapToGlobal(widgetForAction(act)->pos());
            act->menu()->popup(QPoint(pos.x(), pos.y() + widgetForAction(act)->height()));
        }
        else if (event->type() == QEvent::MouseButtonPress && act)
        {
            m_currentMenu->hide();
        }

        return QObject::eventFilter(watched, event);
    }

    switch (event->type())
    {
    case QEvent::Show:
    {
        if (!m_filled)
        {
            BookmarkManager::self()->fillBookmarkBar(this);
            m_filled = true;
        }
    }
    break;

    case QEvent::ActionRemoved:
    {
        QActionEvent *actionEvent = static_cast<QActionEvent*>(event);
        if (actionEvent && actionEvent->action() != m_dropAction)
        {
            QWidget *widget = widgetForAction(actionEvent->action());
            if (widget)
            {
                widget->removeEventFilter(this);
            }
        }
    }
    break;

    case QEvent::ParentChange:
    {
        QActionEvent *actionEvent = static_cast<QActionEvent*>(event);
        if (actionEvent && actionEvent->action() != m_dropAction)
        {
            QWidget *widget = widgetForAction(actionEvent->action());
            if (widget)
            {
                widget->removeEventFilter(this);
            }
        }
    }
    break;

    case QEvent::DragEnter:
    {
        QDragEnterEvent *dragEvent = static_cast<QDragEnterEvent*>(event);
        if (dragEvent->mimeData()->hasFormat(BookmarkManager::bookmark_mime_type())
                || dragEvent->mimeData()->hasFormat("text/uri-list")
                || dragEvent->mimeData()->hasFormat("text/plain"))
        {
            QFrame* dropIndicatorWidget = new QFrame(this);
            dropIndicatorWidget->setFrameShape(QFrame::VLine);
            m_dropAction = insertWidget(actionAt(dragEvent->pos()), dropIndicatorWidget);

            dragEvent->accept();
        }
    }
    break;

    case QEvent::DragLeave:
    {
        QDragLeaveEvent *dragEvent = static_cast<QDragLeaveEvent*>(event);

        if (m_checkedAction)
        {
            m_checkedAction->setCheckable(false);
            m_checkedAction->setChecked(false);
        }

        delete m_dropAction;
        m_dropAction = 0;
        dragEvent->accept();
    }
    break;

    case QEvent::DragMove:
    {
        QDragMoveEvent *dragEvent = static_cast<QDragMoveEvent*>(event);
        if (dragEvent->mimeData()->hasFormat(BookmarkManager::bookmark_mime_type())
                || dragEvent->mimeData()->hasFormat("text/uri-list")
//.........这里部分代码省略.........