完善拖放框架

SimsWorld/BehaviorEditor.cpp

@@ -2,6 +2,7 @@
 
 NodePresent::NodePresent(QWidget* pwidget, double& width_bind, std::shared_ptr<LogicalNode> bind)
 	: _widget_p(pwidget), _node_bind(bind), _column_width(width_bind) {
+	this->setAcceptDrops(true);
 }
 
 QRectF NodePresent::contentMeasure() const
@@ -10,6 +11,48 @@ QRectF NodePresent::contentMeasure() const
 	return metrics.boundingRect(this->_node_bind->rtName());
 }
 
+AcceptType NodePresent::testAccept(const QPointF& local_pos) const
+{
+	return AcceptType::PREV_LEVEL;
+}
+
+#include <QGraphicsSceneDragDropEvent>
+#include <QMimeData>
+#include <QDebug>
+void NodePresent::dragEnterEvent(QGraphicsSceneDragDropEvent* e)
+{
+	if (e->mimeData()->hasFormat("application/drag-node")) {
+		e->acceptProposedAction();
+	}
+}
+
+void NodePresent::dragLeaveEvent(QGraphicsSceneDragDropEvent* event)
+{
+	QGraphicsItem::dragLeaveEvent(event);
+	this->_drop_target = AcceptType::NONE;
+}
+
+void NodePresent::dragMoveEvent(QGraphicsSceneDragDropEvent* e)
+{
+	if (e->mimeData()->hasFormat("application/drag-node")) {
+		auto local_pos = this->mapToItem(this, e->pos());
+		this->_drop_target = this->testAccept(local_pos);
+		if (_drop_target != AcceptType::NONE)
+			e->acceptProposedAction();
+	}
+}
+
+void NodePresent::dropEvent(QGraphicsSceneDragDropEvent* e)
+{
+	qDebug() << QString::fromUtf8(e->mimeData()->data("application/drag-node"));
+
+
+
+
+
+	this->_drop_target = AcceptType::NONE;
+}
+
 QRectF NodePresent::boundingRect() const
 {
 	auto rect = contentMeasure();
@@ -34,6 +77,8 @@ BehaviorsPresent::BehaviorsPresent(QWidget* parent /*= nullptr*/)
 	: QGraphicsView(parent) {
 	this->setScene(&_bind_scene);
 
+	this->setAcceptDrops(true);
+
 	auto font = this->font();
 	font.setPixelSize(20);
 	this->setFont(font);
@@ -180,9 +225,25 @@ uint qHash(const std::shared_ptr<LogicalNode> data, uint seed) noexcept
 }
 
 #include <QSplitter>
+#include <QMenuBar>
+#include <QMenu>
+#include <QFileDialog>
+#include <QDebug>
+
+void BehaviorEditor::open_behavior_map()
+{
+	auto url = QFileDialog::getOpenFileUrl(this, u8"打开行为树文件", QUrl(), "*.behw");
+
+	this->_logical_present->setRoot(_map_root);
+
+	if (!url.isValid())
+		return;
+	qDebug() << url;
+}
+
 BehaviorEditor::BehaviorEditor(QWidget* parent /*= nullptr*/)
 	: QMainWindow(parent),
-	_type_view(new QListView(this)),
+	_type_view(new NodeTypesView(this)),
 	_type_model(new QStandardItemModel(this)),
 	_logical_present(new BehaviorsPresent(this)),
 	_logs_present(new QTextBrowser(this))
@@ -191,6 +252,12 @@ BehaviorEditor::BehaviorEditor(QWidget* parent /*= nullptr*/)
 	_global_kernal = std::make_shared<MapKernal>(_global_loader);
 	_global_kernal->initial();
 
+	this->_map_root = std::make_shared<BehaviorMapNode>(_global_kernal);
+
+	auto mbar = this->menuBar();
+	auto _file = mbar->addMenu(u8"文件");
+	_file->addAction(u8"打开", this, &BehaviorEditor::open_behavior_map);
+
 	auto font = this->font();
 	font.setPixelSize(20);
 	_type_view->setFont(font);
@@ -220,3 +287,46 @@ void BehaviorEditor::nodeTypesViewInit(QStandardItemModel* m)
 		m->appendRow(row_item);
 	}
 }
+
+NodeTypesView::NodeTypesView(QWidget* parent /*= nullptr*/)
+	: QListView(parent)
+{
+	this->setDragEnabled(true);
+	this->setDragDropMode(QAbstractItemView::DragOnly);
+	this->setSelectionBehavior(QAbstractItemView::SelectRows);
+	this->setSelectionMode(QAbstractItemView::SingleSelection);
+}
+
+#include <QMimeData>
+#include <QVariant>
+#include <QDrag>
+#include <QPainter>
+void NodeTypesView::startDrag(Qt::DropActions supported)
+{
+	auto selected = this->selectedIndexes();
+	if (selected.size() && selected.first().isValid()) {
+		auto val = this->model()->data(selected.first(), Qt::DisplayRole);
+		auto type_name = val.toString();
+
+		// 创建自定义MIME数据
+		auto mime_data = new QMimeData();
+		mime_data->setData("application/drag-node", type_name.toUtf8());
+
+		auto view_rect = this->visualRect(selected.first());
+		QPixmap pixmap(view_rect.size());
+		pixmap.fill(Qt::transparent);
+		QPainter p(&pixmap);
+		this->render(&p, QPoint(), QRegion(view_rect));
+		p.end();
+
+		// 创建拖动对象
+		auto drag = new QDrag(this);
+		drag->setMimeData(mime_data);
+		drag->setPixmap(pixmap);
+
+		auto result = drag->exec(supported);
+		if (result == Qt::CopyAction) {
+			qDebug() << __FILE__ << __LINE__;
+		}
+	}
+}

SimsWorld/BehaviorEditor.h

@@ -6,23 +6,35 @@
 
 uint qHash(const std::shared_ptr<LogicalNode> data, uint seed) noexcept;
 
+enum class AcceptType {
+	NONE, PREV_LEVEL, NEXT_LEVEL, PREV_SIBLING, NEXT_SIBLING
+};
 /// <summary>
 /// 节点显示代理
 /// </summary>
 class NodePresent : public QGraphicsItem {
 private:
-	QWidget *const _widget_p;
+	QWidget* const _widget_p;
 	std::shared_ptr<LogicalNode> _node_bind;
-	double &_column_width;
+	double& _column_width;
+
+	AcceptType _drop_target = AcceptType::NONE;
 
 public:
-	NodePresent(QWidget *pwidget, double &width_bind, std::shared_ptr<LogicalNode> bind);
+	NodePresent(QWidget* pwidget, double& width_bind, std::shared_ptr<LogicalNode> bind);
 
 	QRectF contentMeasure() const;
+	AcceptType testAccept(const QPointF& local_pos) const;
 
 	// 通过 QGraphicsItem 继承
 	QRectF boundingRect() const override;
 	void paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget) override;
+
+protected:
+	virtual void dragEnterEvent(QGraphicsSceneDragDropEvent* event);
+	virtual void dragLeaveEvent(QGraphicsSceneDragDropEvent* event);
+	virtual void dragMoveEvent(QGraphicsSceneDragDropEvent* event);
+	virtual void dropEvent(QGraphicsSceneDragDropEvent* event);
 };
 
 
@@ -83,26 +95,39 @@ public:
 	/// <param name="origin_offset">左上角</param>
 	/// <returns>左下角</returns>
 	QPointF nodeRelayout(QHash<std::shared_ptr<LogicalNode>, std::pair<QSizeF, QSizeF>>& _outline_occupy,
-		std::shared_ptr<LogicalNode> ins, const QPointF &origin_offset);
+		std::shared_ptr<LogicalNode> ins, const QPointF& origin_offset);
 };
 
 
 #include <QListView>
+class NodeTypesView : public QListView {
+public:
+	NodeTypesView(QWidget* parent = nullptr);
+
+protected:
+	virtual void startDrag(Qt::DropActions supported) override;
+};
+
+
 #include <QStandardItemModel>
 #include <QTextBrowser>
 #include <MessageLoader.h>
 class BehaviorEditor : public QMainWindow {
 private:
-	QListView *const _type_view;
-	QStandardItemModel *const _type_model;
-	BehaviorsPresent *const _logical_present;
-	QTextBrowser *const _logs_present;
-
 	std::shared_ptr<MessageLoader> _global_loader;
 	std::shared_ptr<MapKernal> _global_kernal;
 
-public:
+	NodeTypesView* const _type_view;
-	BehaviorEditor(QWidget *parent = nullptr);
+	QStandardItemModel* const _type_model;
+	BehaviorsPresent* const _logical_present;
+	QTextBrowser* const _logs_present;
 
-	void nodeTypesViewInit(QStandardItemModel *m);
+	std::shared_ptr<BehaviorMapNode> _map_root;
+
+	void open_behavior_map();
+
+public:
+	BehaviorEditor(QWidget* parent = nullptr);
+
+	void nodeTypesViewInit(QStandardItemModel* m);
 };