Added drag&drop to insert component or bus instances

CMakeLists.txt

@@ -38,5 +38,5 @@ add_executable(SchemeEditor
   comdel/parser/comdellexer.cpp
   main.cpp
   mainwindow.ui
-        comdel/domain/comdelvalidator.cpp comdel/domain/comdelvalidator.h comdel/display/attribute_dialog.cpp comdel/display/attribute_dialog.h comdel/display/name_dialog.cpp comdel/display/name_dialog.h comdel/domain/comdel_generator.cpp comdel/domain/comdel_generator.h)
+        comdel/domain/comdelvalidator.cpp comdel/domain/comdelvalidator.h comdel/display/attribute_dialog.cpp comdel/display/attribute_dialog.h comdel/display/name_dialog.cpp comdel/display/name_dialog.h comdel/domain/comdel_generator.cpp comdel/domain/comdel_generator.h comdel/display/library_list.cpp comdel/display/library_list.h)
 target_link_libraries(SchemeEditor Qt5::Core Qt5::Gui Qt5::Widgets)

comdel/display/component_display.cpp

@@ -6,6 +6,7 @@
 #include <QMenu>
 #include <QGraphicsSceneContextMenuEvent>
 #include <iostream>
+#include <QDebug>
 
 namespace display {
 
@@ -35,8 +36,36 @@ void Component::contextMenuEvent(QGraphicsSceneContextMenuEvent *event) {
     menu.exec(event->screenPos());
 }
 
+    void Pin::contextMenuEvent(QGraphicsSceneContextMenuEvent *event) {
+        QMenu menu;
+        menu.addAction("Connect pin", [&]() {});
+        menu.exec(event->screenPos());
+    }
 
-void Bus::contextMenuEvent(QGraphicsSceneContextMenuEvent *event) {
+    void Pin::mousePressEvent(QGraphicsSceneMouseEvent *event) {
+        if(event->button() == Qt::MouseButton::LeftButton) {
+            auto view = dynamic_cast<Schema*>(this->scene()->views()[0]);
+            view->state = Schema::CREATING_CONNECTION;
+            view->context.pin = this;
+            view->context.startingPoint = view->mapToScene(event->pos().toPoint());
+        }
+    }
+
+    void Pin::mouseMoveEvent(QGraphicsSceneMouseEvent *event) {
+        auto view = dynamic_cast<Schema*>(this->scene()->views()[0]);
+        if(view->state == Schema::CREATING_CONNECTION) {
+
+        }
+    }
+
+    void Pin::mouseReleaseEvent(QGraphicsSceneMouseEvent *event) {
+        if(event->button() == Qt::MouseButton::LeftButton) {
+            auto view = dynamic_cast<Schema*>(this->scene()->views()[0]);
+            view->state = Schema::DEFAULT;
+        }
+    }
+
+    void Bus::contextMenuEvent(QGraphicsSceneContextMenuEvent *event) {
     QMenu menu;
     menu.addAction("Izmjeni ime", [this](){
         auto dialog = new NameDialog(this->busInstance.get());
@@ -107,4 +136,5 @@ void Bus::contextMenuEvent(QGraphicsSceneContextMenuEvent *event) {
         }
         menu.exec(event->screenPos());
     }
+
 } // namespace display

comdel/display/component_display.h

@@ -5,6 +5,8 @@
 #include <comdel/domain/wireinstance.h>
 
 #include <QGraphicsItemGroup>
+#include <QGraphicsSceneMouseEvent>
+#include <QGraphicsSceneMouseEvent>
 #include "comdel/domain/connectioninstance.h"
 
 namespace display {
@@ -17,6 +19,12 @@ public:
     Pin(domain::Pin pin): pin(pin) {
         pin.getDisplayPin().render(this);
     }
+
+    void contextMenuEvent(QGraphicsSceneContextMenuEvent *event) override;
+    void mousePressEvent(QGraphicsSceneMouseEvent *event) override;
+    void mouseMoveEvent(QGraphicsSceneMouseEvent *event) override;
+    void mouseReleaseEvent(QGraphicsSceneMouseEvent *event) override;
+
 };
 
 class Component: public QGraphicsItemGroup

comdel/display/library_display.cpp

@@ -11,8 +11,8 @@ Library::Library()
     auto layout = new QVBoxLayout();
     this->setLayout(layout);
 
-    componentList = new QListWidget();
-    busList = new QListWidget();
+    componentList = new LibraryList(this);
+    busList = new LibraryList(this);
 
     layout->setMargin(4);
     layout->addWidget(new QLabel("Components:"));
@@ -34,14 +34,14 @@ void Library::setLibrary(std::optional<domain::Library> library) {
     }
 
     for(auto& component: library->getComponents()) {
-        auto item = new QListWidgetItem{QString::fromStdString(component.getName())};
+        auto item = new LibraryListItem{component.getName(), "comdel/component", component.getName(), componentList};
         item->setToolTip(QString::fromStdString(component.getTooltip()));
         componentList->addItem(item);
     }
 
     for(auto& bus: library->getBuses()) {
         if(bus.getType() == domain::Bus::REGULAR) {
-            auto item = new QListWidgetItem{QString::fromStdString(bus.getName())};
+            auto item = new LibraryListItem{bus.getName(), "comdel/bus", bus.getName(), busList};
             item->setToolTip(QString::fromStdString(bus.getTooltip()));
             busList->addItem(item);
         }

comdel/display/library_display.h

@@ -5,6 +5,7 @@
 #include <QWidget>
 
 #include <comdel/domain/library.h>
+#include "library_list.h"
 
 namespace display {
 
@@ -18,8 +19,8 @@ public:
 private:
     std::optional<domain::Library> library;
 
-    QListWidget *componentList;
-    QListWidget *busList;
+    LibraryList *componentList;
+    LibraryList *busList;
 
 };
 

comdel/display/library_list.cpp

@@ -0,0 +1,31 @@
+//
+// Created by bbr on 22.05.22..
+//
+
+#include "library_list.h"
+
+#include <QMouseEvent>
+#include <QDrag>
+#include <QMimeData>
+
+namespace display {
+
+    LibraryList::LibraryList(QWidget *parent): QListWidget(parent) {
+        setDragDropMode(DragOnly);
+    }
+
+    QMimeData *LibraryList::mimeData(const QList<QListWidgetItem *> items) const {
+        for(auto qItem: items) {
+            // we only allow one item to be dragged at a time
+            auto item = dynamic_cast<LibraryListItem*>(qItem);
+            auto* md = new QMimeData();
+            md->setData(QString::fromStdString(item->mimeType), QByteArray::fromStdString(item->value));
+            return md;
+        }
+        return nullptr;
+    }
+
+    LibraryListItem::LibraryListItem(std::string title, std::string mimeType, std::string value, QListWidget *parent): QListWidgetItem(parent), mimeType(mimeType), value(value) {
+        setText(QString::fromStdString(title));
+    }
+} // display

comdel/display/library_list.h

@@ -0,0 +1,34 @@
+//
+// Created by bbr on 22.05.22..
+//
+
+#ifndef SCHEMEEDITOR_LIBRARY_LIST_H
+#define SCHEMEEDITOR_LIBRARY_LIST_H
+
+#include <QListWidget>
+#include <QList>
+#include <QMimeData>
+
+namespace display {
+
+    class LibraryList: public QListWidget {
+        Q_OBJECT
+    public:
+        LibraryList(QWidget *parent);
+
+    protected:
+        QMimeData *mimeData(const QList<QListWidgetItem*> items) const override;
+    };
+
+    class LibraryListItem: public QListWidgetItem {
+
+    public:
+        std::string mimeType;
+        std::string value;
+
+        LibraryListItem(std::string title, std::string mimeType, std::string value, QListWidget *parent);
+    };
+
+} // display
+
+#endif //SCHEMEEDITOR_LIBRARY_LIST_H

comdel/display/schema_display.cpp

@@ -1,15 +1,22 @@
 #include "component_display.h"
 #include "schema_display.h"
 
+#include <QDrag>
+#include <QDragEnterEvent>
+#include <QDropEvent>
+#include <QMimeData>
+#include <iostream>
+
 namespace display {
 
 Schema::Schema()
 {
     this->setScene(&scene);
+    this->setAcceptDrops(true);
 }
 
 
-void Schema::setSchema(domain::Schema* _schema)
+void Schema::setSchema(domain::Schema* _schema, domain::Library* _library)
 {
     std::map<std::string, display::ComponentGroup*> components;
     std::map<std::string, display::BusGroup*> buses;
@@ -17,6 +24,7 @@ void Schema::setSchema(domain::Schema* _schema)
     scene.clear();
     connections.clear();
     this->schema = _schema;
+    this->library = _library;
     if(schema != nullptr) {
         for(auto &instance: schema->componentInstances) {
             auto group = new display::ComponentGroup(instance);
@@ -49,4 +57,51 @@ void Schema::updateConnections() {
     }
 }
 
+    void Schema::dragEnterEvent(QDragEnterEvent *event) {
+        if(event->mimeData()->hasFormat("comdel/component") ||
+           event->mimeData()->hasFormat("comdel/bus")) {
+            event->acceptProposedAction();
+        } else {
+            std::cout<<"false"<< std::endl;
+        }
+    }
+
+    void Schema::dropEvent(QDropEvent *event) {
+        if(event->mimeData()->hasFormat("comdel/component")) {
+            auto component = library->getComponent(event->mimeData()->data("comdel/component").toStdString());
+
+            auto attributes = std::vector<domain::InstanceAttribute>();
+            for(auto attr: component.getAttributes()) {
+                attributes.emplace_back(attr.getName(), attr.getDefault(), attr);
+            }
+
+            auto currentPos = this->mapToScene(event->pos());
+
+            auto instance = std::make_shared<domain::ComponentInstance>(component.getInstanceName(), attributes, std::make_pair(currentPos.x(), currentPos.y()), component);
+            schema->componentInstances.push_back(instance);
+
+            auto group = new display::ComponentGroup(instance);
+            scene.addItem(group);
+
+            event->acceptProposedAction();
+        }
+        if(event->mimeData()->hasFormat("comdel/bus")) {
+            auto bus = library->getBus(event->mimeData()->data("comdel/bus").toStdString());
+
+            auto currentPos = this->mapToScene(event->pos());
+
+            auto instance = std::make_shared<domain::BusInstance>(bus.getName(), std::make_pair(currentPos.x(), currentPos.y()), bus, 50);
+            schema->busInstances.push_back(instance);
+
+            auto group = new display::BusGroup(instance);
+            scene.addItem(group);
+
+            event->acceptProposedAction();
+        }
+    }
+
+    void Schema::dragMoveEvent(QDragMoveEvent *event) {
+        event->acceptProposedAction();
+    }
+
 } // namespace display

comdel/display/schema_display.h

@@ -6,6 +6,7 @@
 #include <QWidget>
 
 #include <comdel/domain/schema.h>
+#include <comdel/domain/library.h>
 
 namespace display {
 
@@ -13,19 +14,42 @@ namespace display {
 
 class Schema: public QGraphicsView
 {
+    Q_OBJECT
+
 public:
+
+    enum State {
+        DEFAULT,
+        CREATING_CONNECTION
+    };
+
+    struct Context {
+        display::Pin *pin;
+        QPointF startingPoint;
+    };
+
+    State state = DEFAULT;
+    Context context;
+
     Schema();
 
     std::vector<BusConnection*> connections;
 
-    void setSchema(domain::Schema* schema);
+    void setSchema(domain::Schema* schema, domain::Library* library);
 
     void updateConnections();
 
+protected:
+
+    void dragEnterEvent(QDragEnterEvent *event) override;
+    void dropEvent(QDropEvent *event) override;
+    void dragMoveEvent(QDragMoveEvent *event) override;
+
 private:
     QGraphicsScene scene;
 
     domain::Schema* schema;
+    domain::Library* library;
 };
 
 } // namespace display

mainwindow.cpp

@@ -96,7 +96,7 @@ void MainWindow::onLoadLibrary() {
 
                 // on library load we create a new schema
                 schema = new domain::Schema();
-                schemaDisplay->setSchema(schema);
+                schemaDisplay->setSchema(schema, &(*library));
             }
 
         } else {
@@ -145,7 +145,7 @@ void MainWindow::onLoadSchema() {
 
             if(generator.getErrors().empty()) {
                 libraryDisplay->setLibrary(library);
-                schemaDisplay->setSchema(schema);
+                schemaDisplay->setSchema(schema, &(*library));
             }
         }
     }
@@ -251,7 +251,7 @@ void MainWindow::clear() {
     library = std::nullopt;
 
     libraryDisplay->setLibrary(library);
-    schemaDisplay->setSchema(schema);
+    schemaDisplay->setSchema(schema, nullptr);
 }
 
 MainWindow::~MainWindow()