basic overlay for graph view

src/lib/CMakeLists.txt

@@ -248,6 +248,8 @@ add_files(
 	utility/messaging/type/MessageGraphNodeExpand.h
 	utility/messaging/type/MessageGraphNodeMove.h
 	utility/messaging/type/MessageInterruptTasks.h
+	utility/messaging/type/MessageLoadAfter.h
+	utility/messaging/type/MessageLoadBefore.h
 	utility/messaging/type/MessageLoadProject.h
 	utility/messaging/type/MessageMoveIDECursor.h
 	utility/messaging/type/MessageProjectEdit.h

src/lib/utility/messaging/type/MessageLoadAfter.h

@@ -0,0 +1,21 @@
+#ifndef MESSAGE_LOAD_AFTER_H
+#define MESSAGE_LOAD_AFTER_H
+
+#include "utility/messaging/Message.h"
+
+class MessageLoadAfter
+	: public Message<MessageLoadAfter>
+{
+public:
+	MessageLoadAfter()
+	{
+		setSendAsTask(false);
+	}
+
+	static const std::string getStaticType()
+	{
+		return "MessageLoadAfter";
+	}
+};
+
+#endif // MESSAGE_LOAD_AFTER_H

src/lib/utility/messaging/type/MessageLoadBefore.h

@@ -0,0 +1,21 @@
+#ifndef MESSAGE_LOAD_BEFORE_H
+#define MESSAGE_LOAD_BEFORE_H
+
+#include "utility/messaging/Message.h"
+
+class MessageLoadBefore
+	: public Message<MessageLoadBefore>
+{
+public:
+	MessageLoadBefore()
+	{
+		setSendAsTask(false);
+	}
+
+	static const std::string getStaticType()
+	{
+		return "MessageLoadBefore";
+	}
+};
+
+#endif // MESSAGE_LOAD_BEFORE_H

src/lib_gui/CMakeLists.txt

@@ -102,6 +102,8 @@ add_files(
 	qt/view/QtUndoRedoView.h
 	qt/view/QtViewFactory.cpp
 	qt/view/QtViewFactory.h
+	qt/view/QtViewOverlay.cpp
+	qt/view/QtViewOverlay.h
 	qt/view/QtViewWidgetWrapper.cpp
 	qt/view/QtViewWidgetWrapper.h
 

src/lib_gui/qt/view/QtGraphView.cpp

@@ -19,7 +19,6 @@
 #include "qt/utility/utilityQt.h"
 
 #include "qt/graphics/QtGraphicsView.h"
-#include "qt/view/QtViewWidgetWrapper.h"
 #include "qt/view/graphElements/nodeComponents/QtGraphNodeComponentClickable.h"
 #include "qt/view/graphElements/nodeComponents/QtGraphNodeComponentMoveable.h"
 #include "qt/view/graphElements/QtGraphEdge.h"
@@ -27,6 +26,8 @@
 #include "qt/view/graphElements/QtGraphNodeBundle.h"
 #include "qt/view/graphElements/QtGraphNodeData.h"
 #include "qt/view/graphElements/QtGraphNodeExpandToggle.h"
+#include "qt/view/QtViewOverlay.h"
+#include "qt/view/QtViewWidgetWrapper.h"
 #include "settings/ColorScheme.h"
 
 QtGraphView::QtGraphView(ViewLayout* viewLayout)
@@ -72,6 +73,8 @@ void QtGraphView::initView()
 
 	connect(view, SIGNAL(emptySpaceClicked()), this, SLOT(clickedInEmptySpace()));
 
+	m_overlay = new QtViewOverlay(widget);
+
 	doRefreshView();
 }
 

src/lib_gui/qt/view/QtGraphView.h

@@ -15,6 +15,7 @@ class QSequentialAnimationGroup;
 class QtGraphEdge;
 class QtGraphicsView;
 class QtGraphNode;
+class QtViewOverlay;
 
 class QtGraphView
 	: public QObject
@@ -108,6 +109,8 @@ private:
 
 	std::shared_ptr<QSequentialAnimationGroup> m_transition;
 	QPointF m_sceneRectOffset;
+
+	QtViewOverlay* m_overlay;
 };
 
 #endif // QT_GRAPH_VIEW_H

src/lib_gui/qt/view/QtViewOverlay.cpp

@@ -0,0 +1,58 @@
+#include "qt/view/QtViewOverlay.h"
+
+#include <QWidget>
+#include <QEvent>
+
+ResizeFilter::ResizeFilter(QWidget* widget)
+	: m_widget(widget)
+{
+}
+
+bool ResizeFilter::eventFilter(QObject* obj, QEvent* event)
+{
+	if (event->type() == QEvent::Resize)
+	{
+		QWidget* parent = dynamic_cast<QWidget*>(obj);
+		m_widget->setGeometry(0, 0, parent->width(), parent->height());
+	}
+
+	return QObject::eventFilter(obj, event);
+}
+
+
+QtViewOverlay::QtViewOverlay(QWidget* parent)
+	: m_parent(parent)
+	, m_beforeFunctor(std::bind(&QtViewOverlay::doBefore, this))
+	, m_afterFunctor(std::bind(&QtViewOverlay::doAfter, this))
+{
+	m_overlay = new QWidget(m_parent);
+	m_parent->installEventFilter(new ResizeFilter(m_overlay));
+
+	std::string frameStyle =
+		"#overlay {"
+			"background: #55FF0000; "
+		"}";
+	m_overlay->setStyleSheet(frameStyle.c_str());
+	m_overlay->setObjectName("overlay");
+	m_overlay->hide();
+}
+
+void QtViewOverlay::handleMessage(MessageLoadBefore* message)
+{
+	m_beforeFunctor();
+}
+
+void QtViewOverlay::handleMessage(MessageLoadAfter* message)
+{
+	m_afterFunctor();
+}
+
+void QtViewOverlay::doBefore()
+{
+	m_overlay->show();
+}
+
+void QtViewOverlay::doAfter()
+{
+	m_overlay->hide();
+}

src/lib_gui/qt/view/QtViewOverlay.h

@@ -0,0 +1,53 @@
+#ifndef QT_VIEW_OVERLAY
+#define QT_VIEW_OVERLAY
+
+#include <QObject>
+
+#include "qt/utility/QtThreadedFunctor.h"
+#include "utility/messaging/MessageListener.h"
+#include "utility/messaging/type/MessageLoadBefore.h"
+#include "utility/messaging/type/MessageLoadAfter.h"
+
+class QWidget;
+
+class ResizeFilter
+	: public QObject
+{
+	Q_OBJECT
+
+signals:
+	void triggered();
+
+public:
+	ResizeFilter(QWidget* widget);
+
+protected:
+	bool eventFilter(QObject* obj, QEvent* event);
+
+private:
+	QWidget* m_widget;
+};
+
+
+class QtViewOverlay
+	: public MessageListener<MessageLoadBefore>
+	, public MessageListener<MessageLoadAfter>
+{
+public:
+	QtViewOverlay(QWidget* parent = 0);
+
+private:
+	void handleMessage(MessageLoadBefore* message);
+	void handleMessage(MessageLoadAfter* message);
+
+	void doBefore();
+	void doAfter();
+
+	QWidget* m_parent;
+	QWidget* m_overlay;
+
+	QtThreadedFunctor<void> m_beforeFunctor;
+	QtThreadedFunctor<void> m_afterFunctor;
+};
+
+#endif // QT_VIEW_OVERLAY

src/lib_gui/qt/window/QtMainWindow.cpp

@@ -27,6 +27,7 @@
 #include "utility/messaging/type/MessageDispatchWhenLicenseValid.h"
 #include "utility/messaging/type/MessageFind.h"
 #include "utility/messaging/type/MessageInterruptTasks.h"
+#include "utility/messaging/type/MessageLoadBefore.h"
 #include "utility/messaging/type/MessageLoadProject.h"
 #include "utility/messaging/type/MessageRedo.h"
 #include "utility/messaging/type/MessageRefresh.h"
@@ -370,6 +371,8 @@ void QtMainWindow::showStartScreen()
 
 	connect(startScreen, SIGNAL(openOpenProjectDialog()), this, SLOT(openProject()));
 	connect(startScreen, SIGNAL(openNewProjectDialog()), this, SLOT(newProject()));
+
+	MessageLoadBefore().dispatch();
 }
 
 void QtMainWindow::hideStartScreen()