Replace DVEventAddImage by DiagramEventAddImage.

Use is unchanged.


git-svn-id: svn+ssh://svn.tuxfamily.org/svnroot/qet/qet/trunk@4257 bfdf4180-ca20-0410-9c96-a3a8aa849046

sources/diagramevent/diagrameventaddimage.cpp

@@ -0,0 +1,173 @@
+/*
+        Copyright 2006-2015 The QElectroTech Team
+        This file is part of QElectroTech.
+
+        QElectroTech is free software: you can redistribute it and/or modify
+        it under the terms of the GNU General Public License as published by
+        the Free Software Foundation, either version 2 of the License, or
+        (at your option) any later version.
+
+        QElectroTech 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 General Public License for more details.
+
+        You should have received a copy of the GNU General Public License
+        along with QElectroTech.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "diagrameventaddimage.h"
+#include "diagram.h"
+#include "diagramimageitem.h"
+#include "diagramcommands.h"
+
+/**
+ * @brief DiagramEventAddImage::DiagramEventAddImage
+ * Default constructor
+ * @param diagram : diagram where operate this event
+ */
+DiagramEventAddImage::DiagramEventAddImage(Diagram *diagram) :
+    DiagramEventInterface(diagram),
+    m_image (nullptr),
+    m_is_added (false)
+{
+    openDialog();
+}
+
+/**
+ * @brief DiagramEventAddImage::~DiagramEventAddImage
+ */
+DiagramEventAddImage::~DiagramEventAddImage()
+{
+    if (m_running || m_abort)
+    {
+        if (m_is_added) m_diagram->removeItem(m_image);
+        delete m_image;
+    }
+
+    foreach (QGraphicsView *view, m_diagram->views())
+        view->setContextMenuPolicy((Qt::DefaultContextMenu));
+}
+
+/**
+ * @brief DiagramEventAddImage::mousePressEvent
+ * Action when mouse is pressed
+ * @param event : event of mouse pressed
+ * @return : true if this event is handled, otherwise false
+ */
+bool DiagramEventAddImage::mousePressEvent(QGraphicsSceneMouseEvent *event)
+{
+    if (m_image && event -> button() == Qt::LeftButton)
+    {
+        QPointF pos = event->scenePos();
+        pos.rx() -= m_image->boundingRect().width()/2;
+        pos.ry() -= m_image->boundingRect().height()/2;
+        m_diagram -> undoStack().push (new AddItemCommand<DiagramImageItem *>(m_image, m_diagram, pos));
+
+        foreach (QGraphicsView *view, m_diagram->views())
+            view->setContextMenuPolicy((Qt::DefaultContextMenu));
+
+        m_running = false;
+        emit finish();
+        return true;
+    }
+
+    if (m_image && event -> button() == Qt::RightButton)
+    {
+            m_image -> rotateBy(90);
+            return true;
+    }
+
+    return false;
+}
+
+/**
+ * @brief DiagramEventAddImage::mouseMoveEvent
+ * Action when mouse move
+ * @param event : event of mouse move
+ * @return : true if this event is handled, otherwise false
+ */
+bool DiagramEventAddImage::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
+{
+    if (!m_image || event -> buttons() != Qt::NoButton) return false;
+
+    QPointF pos = event->scenePos();
+
+    if (!m_is_added)
+    {
+        foreach (QGraphicsView *view, m_diagram->views())
+            view->setContextMenuPolicy((Qt::NoContextMenu));
+
+        m_diagram -> addItem(m_image);
+        m_is_added = true;
+    }
+
+    m_image -> setPos(pos - m_image -> boundingRect().center());
+    return true;
+}
+
+/**
+ * @brief DiagramEventAddImage::mouseDoubleClickEvent
+ * This method is only use to overwrite double click.
+ * When double click, image propertie dialog isn't open.
+ * @param event : event of mouse double click.
+ * @return : true if this event is handled, otherwise false
+ */
+bool DiagramEventAddImage::mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event)
+{
+    Q_UNUSED(event);
+    return true;
+}
+
+/**
+ * @brief DiagramEventAddImage::wheelEvent
+ * Action when mouse wheel is rotate
+ * @param event: evet of mouse wheel
+ * @return : true if this event is handled, otherwise false
+ */
+bool DiagramEventAddImage::wheelEvent(QGraphicsSceneWheelEvent *event)
+{
+    if (!m_is_added || !m_image || event -> modifiers() != Qt::CTRL) return false;
+
+    qreal scaling = m_image->scale();
+    event->delta() > 1? scaling += 0.01 : scaling -= 0.01;
+    if (scaling>0.01 && scaling <= 2)
+            m_image->setScale(scaling);
+
+    return true;
+}
+
+/**
+ * @brief DiagramEventAddImage::isNull
+ * @return : true if image can't be loaded, otherwise return false.
+ */
+bool DiagramEventAddImage::isNull() const
+{
+    if (!m_image) return true;
+    return false;
+}
+
+/**
+ * @brief DiagramEventAddImage::openDialog
+ * Open dialog for select the image to add.
+ */
+void DiagramEventAddImage::openDialog()
+{
+    if (m_diagram -> isReadOnly()) return;
+
+        //Open dialog for select image
+    QString pathPictures = QStandardPaths::writableLocation(QStandardPaths::PicturesLocation);
+    QString fileName = QFileDialog::getOpenFileName(m_diagram->views().isEmpty()? nullptr : m_diagram->views().first(), QObject::tr("Selectionner une image..."), pathPictures, QObject::tr("Image Files (*.png *.jpg *.bmp *.svg)"));
+
+    if (fileName.isEmpty()) return;
+
+    QImage image(fileName);
+    if(image.isNull())
+    {
+            QMessageBox::critical(m_diagram->views().isEmpty()? nullptr : m_diagram->views().first(), QObject::tr("Erreur"), QObject::tr("Impossible de charger l'image."));
+            return;
+    }
+
+    m_image = new DiagramImageItem (QPixmap::fromImage(image));
+    m_running = true;
+}