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#include "DragAndDrop/DragDropGuiController.h"
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#include "DragAndDrop/DragDropScroller.h"
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#include "DragAndDrop/DragDropTabSwitcher.h"
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#include "SqpApplication.h"
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#include "Visualization/VisualizationDragDropContainer.h"
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#include "Visualization/VisualizationDragWidget.h"
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#include "Visualization/VisualizationWidget.h"
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#include "Visualization/operations/FindVariableOperation.h"
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#include "Variable/VariableController2.h"
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#include "MimeTypes/MimeTypes.h"
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#include "Common/VisualizationDef.h"
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#include <QDir>
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#include <QLabel>
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#include <QUrl>
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#include <QVBoxLayout>
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Q_LOGGING_CATEGORY(LOG_DragDropGuiController, "DragDropGuiController")
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struct DragDropGuiController::DragDropGuiControllerPrivate
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{
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VisualizationDragWidget* m_CurrentDragWidget = nullptr;
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std::unique_ptr<QWidget> m_PlaceHolder = nullptr;
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QLabel* m_PlaceHolderLabel;
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QWidget* m_PlaceBackground;
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std::unique_ptr<DragDropScroller> m_DragDropScroller = nullptr;
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std::unique_ptr<DragDropTabSwitcher> m_DragDropTabSwitcher = nullptr;
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QString m_ImageTempUrl; // Temporary file for image url generated by the drag & drop. Not using
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// QTemporaryFile to have a name which is not generated.
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VisualizationDragWidget* m_HighlightedDragWidget = nullptr;
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QMetaObject::Connection m_DragWidgetDestroyedConnection;
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QMetaObject::Connection m_HighlightedWidgetDestroyedConnection;
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QList<QWidget*> m_WidgetToClose;
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explicit DragDropGuiControllerPrivate()
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: m_PlaceHolder { std::make_unique<QWidget>() }
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, m_DragDropScroller { std::make_unique<DragDropScroller>() }
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, m_DragDropTabSwitcher { std::make_unique<DragDropTabSwitcher>() }
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{
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auto layout = new QVBoxLayout { m_PlaceHolder.get() };
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layout->setSpacing(0);
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layout->setContentsMargins(0, 0, 0, 0);
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m_PlaceHolderLabel = new QLabel { "", m_PlaceHolder.get() };
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m_PlaceHolderLabel->setMinimumHeight(25);
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layout->addWidget(m_PlaceHolderLabel);
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m_PlaceBackground = new QWidget { m_PlaceHolder.get() };
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m_PlaceBackground->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
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layout->addWidget(m_PlaceBackground);
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sqpApp->installEventFilter(m_DragDropScroller.get());
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sqpApp->installEventFilter(m_DragDropTabSwitcher.get());
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m_ImageTempUrl = QDir::temp().absoluteFilePath("Sciqlop_graph.png");
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}
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void preparePlaceHolder(
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DragDropGuiController::PlaceHolderType type, const QString& topLabelText) const
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{
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if (m_CurrentDragWidget)
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{
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m_PlaceHolder->setMinimumSize(m_CurrentDragWidget->size());
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m_PlaceHolder->setSizePolicy(m_CurrentDragWidget->sizePolicy());
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}
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else
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{
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// Configuration of the placeHolder when there is no dragWidget
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// (for instance with a drag from a variable)
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m_PlaceHolder->setMinimumSize(0, GRAPH_MINIMUM_HEIGHT);
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m_PlaceHolder->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
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}
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switch (type)
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{
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case DragDropGuiController::PlaceHolderType::Graph:
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m_PlaceBackground->setStyleSheet(
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"background-color: #BBD5EE; border: 1px solid #2A7FD4");
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break;
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case DragDropGuiController::PlaceHolderType::Zone:
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case DragDropGuiController::PlaceHolderType::Default:
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m_PlaceBackground->setStyleSheet(
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"background-color: #BBD5EE; border: 2px solid #2A7FD4");
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m_PlaceHolderLabel->setStyleSheet("color: #2A7FD4");
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break;
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}
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m_PlaceHolderLabel->setText(topLabelText);
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m_PlaceHolderLabel->setVisible(!topLabelText.isEmpty());
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}
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};
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DragDropGuiController::DragDropGuiController()
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: impl { spimpl::make_unique_impl<DragDropGuiControllerPrivate>() }
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{
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}
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DragDropGuiController::~DragDropGuiController()
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{
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QFile::remove(impl->m_ImageTempUrl);
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}
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void DragDropGuiController::resetDragAndDrop()
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{
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setCurrentDragWidget(nullptr);
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impl->m_HighlightedDragWidget = nullptr;
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}
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void DragDropGuiController::setCurrentDragWidget(VisualizationDragWidget* dragWidget)
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{
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if (impl->m_CurrentDragWidget)
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{
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QObject::disconnect(impl->m_DragWidgetDestroyedConnection);
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}
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if (dragWidget)
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{
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// ensures the impl->m_CurrentDragWidget is reset when the widget is destroyed
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impl->m_DragWidgetDestroyedConnection = QObject::connect(dragWidget,
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&VisualizationDragWidget::destroyed, [this]() { impl->m_CurrentDragWidget = nullptr; });
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}
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impl->m_CurrentDragWidget = dragWidget;
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}
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VisualizationDragWidget* DragDropGuiController::getCurrentDragWidget() const
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{
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return impl->m_CurrentDragWidget;
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}
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QWidget& DragDropGuiController::placeHolder() const
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{
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return *impl->m_PlaceHolder;
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}
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void DragDropGuiController::insertPlaceHolder(
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QVBoxLayout* layout, int index, PlaceHolderType type, const QString& topLabelText)
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{
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removePlaceHolder();
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impl->preparePlaceHolder(type, topLabelText);
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layout->insertWidget(index, impl->m_PlaceHolder.get());
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impl->m_PlaceHolder->show();
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}
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void DragDropGuiController::removePlaceHolder()
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{
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auto parentWidget = impl->m_PlaceHolder->parentWidget();
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if (parentWidget)
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{
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parentWidget->layout()->removeWidget(impl->m_PlaceHolder.get());
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impl->m_PlaceHolder->setParent(nullptr);
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impl->m_PlaceHolder->hide();
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}
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}
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bool DragDropGuiController::isPlaceHolderSet() const
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{
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return impl->m_PlaceHolder->parentWidget();
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}
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void DragDropGuiController::addDragDropScrollArea(QScrollArea* scrollArea)
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{
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impl->m_DragDropScroller->addScrollArea(scrollArea);
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}
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void DragDropGuiController::removeDragDropScrollArea(QScrollArea* scrollArea)
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{
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impl->m_DragDropScroller->removeScrollArea(scrollArea);
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}
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void DragDropGuiController::addDragDropTabBar(QTabBar* tabBar)
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{
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impl->m_DragDropTabSwitcher->addTabBar(tabBar);
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}
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void DragDropGuiController::removeDragDropTabBar(QTabBar* tabBar)
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{
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impl->m_DragDropTabSwitcher->removeTabBar(tabBar);
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}
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QUrl DragDropGuiController::imageTemporaryUrl(const QImage& image) const
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{
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image.save(impl->m_ImageTempUrl);
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return QUrl::fromLocalFile(impl->m_ImageTempUrl);
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}
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void DragDropGuiController::setHightlightedDragWidget(VisualizationDragWidget* dragWidget)
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{
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if (impl->m_HighlightedDragWidget)
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{
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impl->m_HighlightedDragWidget->highlightForMerge(false);
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QObject::disconnect(impl->m_HighlightedWidgetDestroyedConnection);
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}
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if (dragWidget)
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{
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dragWidget->highlightForMerge(true);
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// ensures the impl->m_HighlightedDragWidget is reset when the widget is destroyed
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impl->m_DragWidgetDestroyedConnection
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= QObject::connect(dragWidget, &VisualizationDragWidget::destroyed,
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[this]() { impl->m_HighlightedDragWidget = nullptr; });
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}
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impl->m_HighlightedDragWidget = dragWidget;
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}
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VisualizationDragWidget* DragDropGuiController::getHightlightedDragWidget() const
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{
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return impl->m_HighlightedDragWidget;
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}
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void DragDropGuiController::delayedCloseWidget(QWidget* widget)
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{
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widget->hide();
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impl->m_WidgetToClose << widget;
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}
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void DragDropGuiController::doCloseWidgets()
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{
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for (auto widget : impl->m_WidgetToClose)
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{
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widget->close();
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}
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impl->m_WidgetToClose.clear();
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}
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bool DragDropGuiController::checkMimeDataForVisualization(
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const QMimeData* mimeData, VisualizationDragDropContainer* dropContainer)
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{
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if (!mimeData || !dropContainer)
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{
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qCWarning(LOG_DragDropGuiController()) << QObject::tr(
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"DragDropGuiController::checkMimeDataForVisualization, invalid input parameters.");
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Q_ASSERT(false);
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return false;
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}
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auto result = false;
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if (mimeData->hasFormat(MIME::MIME_TYPE_VARIABLE_LIST))
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{
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auto variables = sqpApp->variableController().variables(
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Variable2::IDs(mimeData->data(MIME::MIME_TYPE_VARIABLE_LIST)));
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if (variables.size() == 1)
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{
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auto variable = variables[0];
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if (variable->data() != nullptr)
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{
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// Check that the variable is not already in a graph
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auto parent = dropContainer->parentWidget();
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while (parent && qobject_cast<VisualizationWidget*>(parent) == nullptr)
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{
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parent = parent->parentWidget(); // Search for the top level VisualizationWidget
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}
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if (parent)
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{
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auto visualizationWidget = static_cast<VisualizationWidget*>(parent);
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FindVariableOperation findVariableOperation { variable };
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visualizationWidget->accept(&findVariableOperation);
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auto variableContainers = findVariableOperation.result();
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if (variableContainers.empty())
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{
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result = true;
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}
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else
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{
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// result = false: the variable already exist in the visualisation
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}
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}
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else
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{
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qCWarning(LOG_DragDropGuiController()) << QObject::tr(
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"DragDropGuiController::checkMimeDataForVisualization, the parent "
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"VisualizationWidget cannot be found. Cannot check if the variable is "
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"already used or not.");
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}
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}
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else
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{
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// result = false: the variable is not fully loaded
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}
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}
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else
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{
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// result = false: cannot drop multiple variables in the visualisation
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}
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}
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else if (mimeData->hasFormat(MIME::MIME_TYPE_PRODUCT_LIST))
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{
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auto productDataList = MIME::decode(
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mimeData->data(MIME::MIME_TYPE_PRODUCT_LIST));
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if (productDataList.count() == 1)
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{
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result = true;
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}
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else
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{
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// result = false: cannot drop multiple products in the visualisation
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}
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}
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else
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{
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// Other MIME data
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// no special rules, accepted by default
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result = true;
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}
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return result;
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}
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