|
|
#include "DragDropHelper.h"
|
|
|
#include "SqpApplication.h"
|
|
|
#include "Visualization/VisualizationDragDropContainer.h"
|
|
|
#include "Visualization/VisualizationDragWidget.h"
|
|
|
#include "Visualization/VisualizationWidget.h"
|
|
|
#include "Visualization/operations/FindVariableOperation.h"
|
|
|
|
|
|
#include "Variable/VariableController.h"
|
|
|
|
|
|
#include "Common/MimeTypesDef.h"
|
|
|
#include "Common/VisualizationDef.h"
|
|
|
|
|
|
#include <QDir>
|
|
|
#include <QDragEnterEvent>
|
|
|
#include <QDragMoveEvent>
|
|
|
#include <QScrollArea>
|
|
|
#include <QScrollBar>
|
|
|
#include <QTimer>
|
|
|
#include <QVBoxLayout>
|
|
|
|
|
|
const int SCROLL_SPEED = 5;
|
|
|
const int SCROLL_ZONE_SIZE = 50;
|
|
|
|
|
|
Q_LOGGING_CATEGORY(LOG_DragDropHelper, "DragDrophelper")
|
|
|
|
|
|
struct DragDropScroller::DragDropScrollerPrivate {
|
|
|
|
|
|
QList<QScrollArea *> m_ScrollAreas;
|
|
|
QScrollArea *m_CurrentScrollArea = nullptr;
|
|
|
std::unique_ptr<QTimer> m_Timer = nullptr;
|
|
|
|
|
|
|
|
|
enum class ScrollDirection { up, down, unknown };
|
|
|
ScrollDirection m_Direction = ScrollDirection::unknown;
|
|
|
|
|
|
explicit DragDropScrollerPrivate() : m_Timer{std::make_unique<QTimer>()}
|
|
|
{
|
|
|
m_Timer->setInterval(0);
|
|
|
}
|
|
|
};
|
|
|
|
|
|
DragDropScroller::DragDropScroller(QObject *parent)
|
|
|
: QObject{parent}, impl{spimpl::make_unique_impl<DragDropScrollerPrivate>()}
|
|
|
{
|
|
|
connect(impl->m_Timer.get(), &QTimer::timeout, this, &DragDropScroller::onTimer);
|
|
|
}
|
|
|
|
|
|
void DragDropScroller::addScrollArea(QScrollArea *scrollArea)
|
|
|
{
|
|
|
impl->m_ScrollAreas << scrollArea;
|
|
|
scrollArea->viewport()->setAcceptDrops(true);
|
|
|
}
|
|
|
|
|
|
void DragDropScroller::removeScrollArea(QScrollArea *scrollArea)
|
|
|
{
|
|
|
impl->m_ScrollAreas.removeAll(scrollArea);
|
|
|
scrollArea->viewport()->setAcceptDrops(false);
|
|
|
}
|
|
|
|
|
|
bool DragDropScroller::eventFilter(QObject *obj, QEvent *event)
|
|
|
{
|
|
|
if (event->type() == QEvent::DragMove) {
|
|
|
auto w = static_cast<QWidget *>(obj);
|
|
|
|
|
|
if (impl->m_CurrentScrollArea && impl->m_CurrentScrollArea->isAncestorOf(w)) {
|
|
|
auto moveEvent = static_cast<QDragMoveEvent *>(event);
|
|
|
|
|
|
auto pos = moveEvent->pos();
|
|
|
if (impl->m_CurrentScrollArea->viewport() != w) {
|
|
|
auto globalPos = w->mapToGlobal(moveEvent->pos());
|
|
|
pos = impl->m_CurrentScrollArea->viewport()->mapFromGlobal(globalPos);
|
|
|
}
|
|
|
|
|
|
auto isInTopZone = pos.y() > impl->m_CurrentScrollArea->viewport()->size().height()
|
|
|
- SCROLL_ZONE_SIZE;
|
|
|
auto isInBottomZone = pos.y() < SCROLL_ZONE_SIZE;
|
|
|
|
|
|
if (!isInTopZone && !isInBottomZone) {
|
|
|
impl->m_Direction = DragDropScrollerPrivate::ScrollDirection::unknown;
|
|
|
impl->m_Timer->stop();
|
|
|
}
|
|
|
else if (!impl->m_Timer->isActive()) {
|
|
|
impl->m_Direction = isInTopZone ? DragDropScrollerPrivate::ScrollDirection::up
|
|
|
: DragDropScrollerPrivate::ScrollDirection::down;
|
|
|
impl->m_Timer->start();
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
else if (event->type() == QEvent::DragEnter) {
|
|
|
auto w = static_cast<QWidget *>(obj);
|
|
|
|
|
|
for (auto scrollArea : impl->m_ScrollAreas) {
|
|
|
if (impl->m_CurrentScrollArea != scrollArea && scrollArea->isAncestorOf(w)) {
|
|
|
auto enterEvent = static_cast<QDragEnterEvent *>(event);
|
|
|
enterEvent->acceptProposedAction();
|
|
|
enterEvent->setDropAction(Qt::IgnoreAction);
|
|
|
impl->m_CurrentScrollArea = scrollArea;
|
|
|
break;
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
else if (event->type() == QEvent::DragLeave) {
|
|
|
if (impl->m_CurrentScrollArea) {
|
|
|
if (!QRect(QPoint(), impl->m_CurrentScrollArea->size())
|
|
|
.contains(impl->m_CurrentScrollArea->mapFromGlobal(QCursor::pos()))) {
|
|
|
impl->m_CurrentScrollArea = nullptr;
|
|
|
impl->m_Direction = DragDropScrollerPrivate::ScrollDirection::unknown;
|
|
|
impl->m_Timer->stop();
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
else if (event->type() == QEvent::Drop) {
|
|
|
if (impl->m_CurrentScrollArea) {
|
|
|
impl->m_CurrentScrollArea = nullptr;
|
|
|
impl->m_Direction = DragDropScrollerPrivate::ScrollDirection::unknown;
|
|
|
impl->m_Timer->stop();
|
|
|
}
|
|
|
}
|
|
|
|
|
|
return false;
|
|
|
}
|
|
|
|
|
|
void DragDropScroller::onTimer()
|
|
|
{
|
|
|
if (impl->m_CurrentScrollArea) {
|
|
|
auto mvt = 0;
|
|
|
switch (impl->m_Direction) {
|
|
|
case DragDropScrollerPrivate::ScrollDirection::up:
|
|
|
mvt = SCROLL_SPEED;
|
|
|
break;
|
|
|
case DragDropScrollerPrivate::ScrollDirection::down:
|
|
|
mvt = -SCROLL_SPEED;
|
|
|
break;
|
|
|
default:
|
|
|
break;
|
|
|
}
|
|
|
|
|
|
impl->m_CurrentScrollArea->verticalScrollBar()->setValue(
|
|
|
impl->m_CurrentScrollArea->verticalScrollBar()->value() + mvt);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
struct DragDropHelper::DragDropHelperPrivate {
|
|
|
|
|
|
VisualizationDragWidget *m_CurrentDragWidget = nullptr;
|
|
|
std::unique_ptr<QWidget> m_PlaceHolder = nullptr;
|
|
|
std::unique_ptr<DragDropScroller> m_DragDropScroller = nullptr;
|
|
|
QString m_ImageTempUrl; // Temporary file for image url generated by the drag & drop. Not using
|
|
|
// QTemporaryFile to have a name which is not generated.
|
|
|
|
|
|
explicit DragDropHelperPrivate()
|
|
|
: m_PlaceHolder{std::make_unique<QWidget>()},
|
|
|
m_DragDropScroller{std::make_unique<DragDropScroller>()}
|
|
|
{
|
|
|
m_PlaceHolder->setStyleSheet("background-color: #BBD5EE; border:2px solid #2A7FD4");
|
|
|
sqpApp->installEventFilter(m_DragDropScroller.get());
|
|
|
|
|
|
|
|
|
m_ImageTempUrl = QDir::temp().absoluteFilePath("Scqlop_graph.png");
|
|
|
}
|
|
|
|
|
|
void preparePlaceHolder() const
|
|
|
{
|
|
|
if (m_CurrentDragWidget) {
|
|
|
m_PlaceHolder->setMinimumSize(m_CurrentDragWidget->size());
|
|
|
m_PlaceHolder->setSizePolicy(m_CurrentDragWidget->sizePolicy());
|
|
|
}
|
|
|
else {
|
|
|
// Configuration of the placeHolder when there is no dragWidget
|
|
|
// (for instance with a drag from a variable)
|
|
|
|
|
|
m_PlaceHolder->setMinimumSize(0, GRAPH_MINIMUM_HEIGHT);
|
|
|
m_PlaceHolder->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
|
|
|
}
|
|
|
}
|
|
|
};
|
|
|
|
|
|
|
|
|
DragDropHelper::DragDropHelper() : impl{spimpl::make_unique_impl<DragDropHelperPrivate>()}
|
|
|
{
|
|
|
}
|
|
|
|
|
|
DragDropHelper::~DragDropHelper()
|
|
|
{
|
|
|
QFile::remove(impl->m_ImageTempUrl);
|
|
|
}
|
|
|
|
|
|
void DragDropHelper::resetDragAndDrop()
|
|
|
{
|
|
|
setCurrentDragWidget(nullptr);
|
|
|
}
|
|
|
|
|
|
void DragDropHelper::setCurrentDragWidget(VisualizationDragWidget *dragWidget)
|
|
|
{
|
|
|
impl->m_CurrentDragWidget = dragWidget;
|
|
|
}
|
|
|
|
|
|
VisualizationDragWidget *DragDropHelper::getCurrentDragWidget() const
|
|
|
{
|
|
|
return impl->m_CurrentDragWidget;
|
|
|
}
|
|
|
|
|
|
|
|
|
QWidget &DragDropHelper::placeHolder() const
|
|
|
{
|
|
|
return *impl->m_PlaceHolder;
|
|
|
}
|
|
|
|
|
|
void DragDropHelper::insertPlaceHolder(QVBoxLayout *layout, int index)
|
|
|
{
|
|
|
removePlaceHolder();
|
|
|
impl->preparePlaceHolder();
|
|
|
layout->insertWidget(index, impl->m_PlaceHolder.get());
|
|
|
impl->m_PlaceHolder->show();
|
|
|
}
|
|
|
|
|
|
void DragDropHelper::removePlaceHolder()
|
|
|
{
|
|
|
auto parentWidget = impl->m_PlaceHolder->parentWidget();
|
|
|
if (parentWidget) {
|
|
|
parentWidget->layout()->removeWidget(impl->m_PlaceHolder.get());
|
|
|
impl->m_PlaceHolder->setParent(nullptr);
|
|
|
impl->m_PlaceHolder->hide();
|
|
|
}
|
|
|
}
|
|
|
|
|
|
bool DragDropHelper::isPlaceHolderSet() const
|
|
|
{
|
|
|
return impl->m_PlaceHolder->parentWidget();
|
|
|
}
|
|
|
|
|
|
void DragDropHelper::addDragDropScrollArea(QScrollArea *scrollArea)
|
|
|
{
|
|
|
impl->m_DragDropScroller->addScrollArea(scrollArea);
|
|
|
}
|
|
|
|
|
|
void DragDropHelper::removeDragDropScrollArea(QScrollArea *scrollArea)
|
|
|
{
|
|
|
impl->m_DragDropScroller->removeScrollArea(scrollArea);
|
|
|
}
|
|
|
|
|
|
QUrl DragDropHelper::imageTemporaryUrl(const QImage &image) const
|
|
|
{
|
|
|
image.save(impl->m_ImageTempUrl);
|
|
|
return QUrl::fromLocalFile(impl->m_ImageTempUrl);
|
|
|
}
|
|
|
|
|
|
bool DragDropHelper::checkMimeDataForVisualization(const QMimeData *mimeData,
|
|
|
VisualizationDragDropContainer *dropContainer)
|
|
|
{
|
|
|
auto result = true;
|
|
|
|
|
|
if (mimeData->hasFormat(MIME_TYPE_VARIABLE_LIST)) {
|
|
|
auto variables = sqpApp->variableController().variablesForMimeData(
|
|
|
mimeData->data(MIME_TYPE_VARIABLE_LIST));
|
|
|
|
|
|
if (variables.count() == 1) {
|
|
|
// Check that the viariable is not already in a graph
|
|
|
|
|
|
// Search for the top level VisualizationWidget
|
|
|
auto parent = dropContainer->parentWidget();
|
|
|
while (parent && qobject_cast<VisualizationWidget *>(parent) == nullptr) {
|
|
|
parent = parent->parentWidget();
|
|
|
}
|
|
|
|
|
|
if (parent) {
|
|
|
auto visualizationWidget = static_cast<VisualizationWidget *>(parent);
|
|
|
|
|
|
FindVariableOperation findVariableOperation{variables.first()};
|
|
|
visualizationWidget->accept(&findVariableOperation);
|
|
|
auto variableContainers = findVariableOperation.result();
|
|
|
if (!variableContainers.empty()) {
|
|
|
result = false;
|
|
|
}
|
|
|
}
|
|
|
else {
|
|
|
qCWarning(LOG_DragDropHelper()) << QObject::tr(
|
|
|
"DragDropHelper::checkMimeDataForVisualization, the parent "
|
|
|
"VisualizationWidget cannot be found.");
|
|
|
result = false;
|
|
|
}
|
|
|
}
|
|
|
else {
|
|
|
result = false;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
return result;
|
|
|
}
|
|
|
|
