[TD]dialog for Detail #4221

src/Mod/TechDraw/Gui/QGIGhostHighlight.cpp

@@ -0,0 +1,115 @@
+/***************************************************************************
+ *   Copyright (c) 2020 WandererFan <wandererfan@gmail.com>                *
+ *                                                                         *
+ *   This file is part of the FreeCAD CAx development system.              *
+ *                                                                         *
+ *   This library is free software; you can redistribute it and/or         *
+ *   modify it under the terms of the GNU Library General Public           *
+ *   License as published by the Free Software Foundation; either          *
+ *   version 2 of the License, or (at your option) any later version.      *
+ *                                                                         *
+ *   This library  is distributed in the hope that it will be useful,      *
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+ *   GNU Library General Public License for more details.                  *
+ *                                                                         *
+ *   You should have received a copy of the GNU Library General Public     *
+ *   License along with this library; see the file COPYING.LIB. If not,    *
+ *   write to the Free Software Foundation, Inc., 59 Temple Place,         *
+ *   Suite 330, Boston, MA  02111-1307, USA                                *
+ *                                                                         *
+ ***************************************************************************/
+
+#include "PreCompiled.h"
+#ifndef _PreComp_
+#include <QPainter>
+#include <QPainterPathStroker>
+#include <QStyleOptionGraphicsItem>
+#include <QPen>
+#include <QColor>
+#endif
+
+#include <App/Application.h>
+#include <App/Material.h>
+#include <Base/Console.h>
+#include <Base/Parameter.h>
+
+#include <Mod/TechDraw/App/DrawUtil.h>
+
+#include <qmath.h>
+#include "Rez.h"
+#include "DrawGuiUtil.h"
+#include "QGIView.h"
+#include "QGIGhostHighlight.h"
+
+using namespace TechDrawGui;
+using namespace TechDraw;
+
+QGIGhostHighlight::QGIGhostHighlight()
+{
+    setInteractive(true);
+    m_dragging = false;
+
+    //make the ghost very visible
+    QFont f(QGIView::getPrefFont());
+    double fontSize = QGIView::getPrefFontSize();
+    setFont(f, fontSize);
+    setReference("drag");
+    setStyle(Qt::SolidLine);
+    setColor(prefSelectColor());
+    setWidth(Rez::guiX(1.0));
+    setRadius(10.0);         //placeholder
+}
+
+QGIGhostHighlight::~QGIGhostHighlight()
+{
+
+}
+
+QVariant QGIGhostHighlight::itemChange(GraphicsItemChange change, const QVariant &value)
+{
+    if (change == ItemPositionHasChanged && scene()) {
+        // nothing to do here?
+    }
+    return QGIHighlight::itemChange(change, value);
+}
+
+void QGIGhostHighlight::mousePressEvent(QGraphicsSceneMouseEvent * event)
+{
+//    Base::Console().Message("QGIGhostHighlight::mousePress() - %X\n", this);
+    if ( (event->button() == Qt::LeftButton) && 
+        (flags() && QGraphicsItem::ItemIsMovable) ) {
+            m_dragging = true;
+            event->accept();
+    }
+    QGIHighlight::mousePressEvent(event);
+}
+
+void QGIGhostHighlight::mouseReleaseEvent(QGraphicsSceneMouseEvent * event)
+{
+//    Base::Console().Message("QGIGhostHighlight::mouseRelease() - pos: %s scenePos: %s\n", 
+//                                 DrawUtil::formatVector(pos()).c_str(),
+//                                 DrawUtil::formatVector(mapToScene(pos())).c_str());
+    if (m_dragging) {
+        m_dragging = false;
+        Q_EMIT positionChange(scenePos());
+        event->accept();
+    }
+    QGIHighlight::mouseReleaseEvent(event);
+}
+
+void QGIGhostHighlight::setInteractive(bool state)
+{
+    setFlag(QGraphicsItem::ItemIsSelectable, state);
+    setFlag(QGraphicsItem::ItemIsMovable, state);
+    setFlag(QGraphicsItem::ItemSendsScenePositionChanges, state);
+    setFlag(QGraphicsItem::ItemSendsGeometryChanges, state);
+}
+
+//radius should scaled, but not Rez::guix()
+void QGIGhostHighlight::setRadius(double r)
+{
+    setBounds(-r, r, r, -r);
+}
+
+#include <Mod/TechDraw/Gui/moc_QGIGhostHighlight.cpp>