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Merge pull request 323 from SciQLop-fork develop...
Merge pull request 323 from SciQLop-fork develop Develop
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r886:28af007d2663
r889:756d7fefd6f4 merge
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DragDropHelper.cpp
275 lines | 9.5 KiB | text/x-c | CppLexer
/ gui / src / DragAndDrop / DragDropHelper.cpp
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trabillard
Moves the DragDropHelper file
 r884 #include "DragAndDrop/DragDropHelper.h"
trabillard
Moves the class DragDropScroller in its own file
 r885 #include "DragAndDrop/DragDropScroller.h"
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 r886 #include "DragAndDrop/DragDropTabSwitcher.h"
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 r837 #include "SqpApplication.h"
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 r850 #include "Visualization/VisualizationDragDropContainer.h"
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Format changes
 r844 #include "Visualization/VisualizationDragWidget.h"
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 r850 #include "Visualization/VisualizationWidget.h"
#include "Visualization/operations/FindVariableOperation.h"
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 r876 #include "Variable/Variable.h"
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 r850 #include "Variable/VariableController.h"
#include "Common/MimeTypesDef.h"
#include "Common/VisualizationDef.h"
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 r837
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Format changes
 r844 #include <QDir>
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 r881 #include <QLabel>
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 r885 #include <QUrl>
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Format changes
 r844 #include <QVBoxLayout>
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 r837
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Manage the scroll of the tab QScrollArea during a drag&drop operation
 r840
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 r886 Q_LOGGING_CATEGORY(LOG_DragDropHelper, "DragDropHelper")
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struct DragDropHelper::DragDropHelperPrivate {
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Format changes
 r844 VisualizationDragWidget *m_CurrentDragWidget = nullptr;
std::unique_ptr<QWidget> m_PlaceHolder = nullptr;
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 r881 QLabel *m_PlaceHolderLabel;
QWidget *m_PlaceBackground;
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Format changes
 r844 std::unique_ptr<DragDropScroller> m_DragDropScroller = nullptr;
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 r886 std::unique_ptr<DragDropTabSwitcher> m_DragDropTabSwitcher = nullptr;
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Format changes
 r844 QString m_ImageTempUrl; // Temporary file for image url generated by the drag & drop. Not using
// QTemporaryFile to have a name which is not generated.
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 r837
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 r873 VisualizationDragWidget *m_HighlightedDragWidget = nullptr;
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Improves reliability
 r874 QMetaObject::Connection m_DragWidgetDestroyedConnection;
QMetaObject::Connection m_HighlightedWidgetDestroyedConnection;
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 r837 explicit DragDropHelperPrivate()
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Format changes
 r844 : m_PlaceHolder{std::make_unique<QWidget>()},
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 r886 m_DragDropScroller{std::make_unique<DragDropScroller>()},
m_DragDropTabSwitcher{std::make_unique<DragDropTabSwitcher>()}
trabillard
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 r837 {
trabillard
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 r881 auto layout = new QVBoxLayout{m_PlaceHolder.get()};
layout->setSpacing(0);
layout->setContentsMargins(0, 0, 0, 0);
m_PlaceHolderLabel = new QLabel{"", m_PlaceHolder.get()};
m_PlaceHolderLabel->setMinimumHeight(25);
layout->addWidget(m_PlaceHolderLabel);
m_PlaceBackground = new QWidget{m_PlaceHolder.get()};
m_PlaceBackground->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
layout->addWidget(m_PlaceBackground);
sqpApp->installEventFilter(m_DragDropScroller.get());
trabillard
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 r886 sqpApp->installEventFilter(m_DragDropTabSwitcher.get());
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 r837
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prevent dropping an variable without data in the visu
 r876 m_ImageTempUrl = QDir::temp().absoluteFilePath("Sciqlop_graph.png");
trabillard
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 r837 }
trabillard
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 r881 void preparePlaceHolder(DragDropHelper::PlaceHolderType type, const QString &topLabelText) const
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 r837 {
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Format changes
 r844 if (m_CurrentDragWidget) {
m_PlaceHolder->setMinimumSize(m_CurrentDragWidget->size());
m_PlaceHolder->setSizePolicy(m_CurrentDragWidget->sizePolicy());
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 r837 }
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Format changes
 r844 else {
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 r850 // Configuration of the placeHolder when there is no dragWidget
// (for instance with a drag from a variable)
trabillard
Move the GRAPH_MINIMUM_HEIGHT constant in a place accessible everywhere and use it in the drag&drop
 r851 m_PlaceHolder->setMinimumSize(0, GRAPH_MINIMUM_HEIGHT);
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 r850 m_PlaceHolder->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
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 r837 }
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 r881
switch (type) {
case DragDropHelper::PlaceHolderType::Graph:
m_PlaceBackground->setStyleSheet(
"background-color: #BBD5EE; border: 1px solid #2A7FD4");
break;
case DragDropHelper::PlaceHolderType::Zone:
case DragDropHelper::PlaceHolderType::Default:
m_PlaceBackground->setStyleSheet(
"background-color: #BBD5EE; border: 2px solid #2A7FD4");
m_PlaceHolderLabel->setStyleSheet("color: #2A7FD4");
break;
}
m_PlaceHolderLabel->setText(topLabelText);
m_PlaceHolderLabel->setVisible(!topLabelText.isEmpty());
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 r837 }
};
trabillard
Moves the DragDropHelper file
 r884 DragDropHelper::DragDropHelper() : impl{spimpl::make_unique_impl<DragDropHelperPrivate>()} {}
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DragDropHelper::~DragDropHelper()
{
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Format changes
 r844 QFile::remove(impl->m_ImageTempUrl);
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 r837 }
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 r850 void DragDropHelper::resetDragAndDrop()
{
setCurrentDragWidget(nullptr);
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 r873 impl->m_HighlightedDragWidget = nullptr;
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 r850 }
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 r837 void DragDropHelper::setCurrentDragWidget(VisualizationDragWidget *dragWidget)
{
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 r874 if (impl->m_CurrentDragWidget) {
QObject::disconnect(impl->m_DragWidgetDestroyedConnection);
}
if (dragWidget) {
// ensures the impl->m_CurrentDragWidget is reset when the widget is destroyed
impl->m_DragWidgetDestroyedConnection
= QObject::connect(dragWidget, &VisualizationDragWidget::destroyed,
[this]() { impl->m_CurrentDragWidget = nullptr; });
}
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Format changes
 r844 impl->m_CurrentDragWidget = dragWidget;
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 r837 }
VisualizationDragWidget *DragDropHelper::getCurrentDragWidget() const
{
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 r844 return impl->m_CurrentDragWidget;
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 r837 }
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Format changes
 r844 QWidget &DragDropHelper::placeHolder() const
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 r837 {
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 r844 return *impl->m_PlaceHolder;
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 r837 }
trabillard
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 r881 void DragDropHelper::insertPlaceHolder(QVBoxLayout *layout, int index, PlaceHolderType type,
const QString &topLabelText)
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 r837 {
removePlaceHolder();
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 r881 impl->preparePlaceHolder(type, topLabelText);
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Format changes
 r844 layout->insertWidget(index, impl->m_PlaceHolder.get());
impl->m_PlaceHolder->show();
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 r837 }
void DragDropHelper::removePlaceHolder()
{
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Format changes
 r844 auto parentWidget = impl->m_PlaceHolder->parentWidget();
if (parentWidget) {
parentWidget->layout()->removeWidget(impl->m_PlaceHolder.get());
impl->m_PlaceHolder->setParent(nullptr);
impl->m_PlaceHolder->hide();
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 r837 }
}
bool DragDropHelper::isPlaceHolderSet() const
{
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 r844 return impl->m_PlaceHolder->parentWidget();
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 r837 }
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 r840 void DragDropHelper::addDragDropScrollArea(QScrollArea *scrollArea)
{
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Format changes
 r844 impl->m_DragDropScroller->addScrollArea(scrollArea);
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 r840 }
void DragDropHelper::removeDragDropScrollArea(QScrollArea *scrollArea)
{
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Format changes
 r844 impl->m_DragDropScroller->removeScrollArea(scrollArea);
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 r840 }
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 r886 void DragDropHelper::addDragDropTabBar(QTabBar *tabBar)
{
impl->m_DragDropTabSwitcher->addTabBar(tabBar);
}
void DragDropHelper::removeDragDropTabBar(QTabBar *tabBar)
{
impl->m_DragDropTabSwitcher->removeTabBar(tabBar);
}
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Format changes
 r844 QUrl DragDropHelper::imageTemporaryUrl(const QImage &image) const
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 r837 {
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Format changes
 r844 image.save(impl->m_ImageTempUrl);
return QUrl::fromLocalFile(impl->m_ImageTempUrl);
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 r837 }
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 r873 void DragDropHelper::setHightlightedDragWidget(VisualizationDragWidget *dragWidget)
{
if (impl->m_HighlightedDragWidget) {
impl->m_HighlightedDragWidget->highlightForMerge(false);
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 r874 QObject::disconnect(impl->m_HighlightedWidgetDestroyedConnection);
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 r873 }
if (dragWidget) {
trabillard
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 r874 dragWidget->highlightForMerge(true);
// ensures the impl->m_HighlightedDragWidget is reset when the widget is destroyed
impl->m_DragWidgetDestroyedConnection
= QObject::connect(dragWidget, &VisualizationDragWidget::destroyed,
[this]() { impl->m_HighlightedDragWidget = nullptr; });
trabillard
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 r873 }
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impl->m_HighlightedDragWidget = dragWidget;
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 r873 }
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 r875 VisualizationDragWidget *DragDropHelper::getHightlightedDragWidget() const
{
return impl->m_HighlightedDragWidget;
}
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 r850 bool DragDropHelper::checkMimeDataForVisualization(const QMimeData *mimeData,
VisualizationDragDropContainer *dropContainer)
{
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 r868 if (!mimeData || !dropContainer) {
qCWarning(LOG_DragDropHelper()) << QObject::tr(
"DragDropHelper::checkMimeDataForVisualization, invalid input parameters.");
Q_ASSERT(false);
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 r876 return false;
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 r868 }
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 r876 auto result = false;
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if (mimeData->hasFormat(MIME_TYPE_VARIABLE_LIST)) {
auto variables = sqpApp->variableController().variablesForMimeData(
mimeData->data(MIME_TYPE_VARIABLE_LIST));
if (variables.count() == 1) {
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 r876 auto variable = variables.first();
if (variable->dataSeries() != nullptr) {
// Check that the variable is not already in a graph
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 r876 auto parent = dropContainer->parentWidget();
while (parent && qobject_cast<VisualizationWidget *>(parent) == nullptr) {
parent = parent->parentWidget(); // Search for the top level VisualizationWidget
}
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 r876 if (parent) {
auto visualizationWidget = static_cast<VisualizationWidget *>(parent);
FindVariableOperation findVariableOperation{variable};
visualizationWidget->accept(&findVariableOperation);
auto variableContainers = findVariableOperation.result();
if (variableContainers.empty()) {
result = true;
}
else {
// result = false: the variable already exist in the visualisation
}
}
else {
qCWarning(LOG_DragDropHelper()) << QObject::tr(
"DragDropHelper::checkMimeDataForVisualization, the parent "
"VisualizationWidget cannot be found. Cannot check if the variable is "
"already used or not.");
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 r850 }
}
else {
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 r876 // result = false: the variable is not fully loaded
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}
else {
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 r876 // result = false: cannot drop multiple variables in the visualisation
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 r850 }
}
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 r876 else {
// Other MIME data
// no special rules, accepted by default
result = true;
}
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return result;
}