enable rotation

src/app/puzzle/puzzlemainwindow.cpp

@@ -372,7 +372,8 @@ void PuzzleMainWindow::SetPropertyTabCurrentPieceData()
         SetDoubleSpinBoxValue(ui->doubleSpinBoxCurrentPieceBoxPositionX, UnitConvertor(pos.x(), Unit::Px, m_layout->GetUnit()));
         SetDoubleSpinBoxValue(ui->doubleSpinBoxCurrentPieceBoxPositionY, UnitConvertor(pos.y(), Unit::Px, m_layout->GetUnit()));
 
-        // TODO: rotation
+        qreal angle = selectedPiece->GetRotation();
+        SetDoubleSpinBoxValue(ui->doubleSpinBoxCurrentPieceAngle, angle);
     }
     else
     {
@@ -831,24 +832,17 @@ void PuzzleMainWindow::on_checkBoxCurrentPieceMirrorPiece_toggled(bool checked)
 //---------------------------------------------------------------------------------------------------------------------
 void PuzzleMainWindow::on_doubleSpinBoxCurrentPieceAngle_valueChanged(double value)
 {
-    // just for test purpuses, to be removed:
-    QMessageBox msgBox;
-    msgBox.setText("TODO PuzzleMainWindow::CurrentPieceAngleChanged");
-    int ret = msgBox.exec();
-
-    Q_UNUSED(value);
-    Q_UNUSED(ret);
-
-    // TODO
+    if(m_selectedPieces.count() == 1)
+    {
+        VPuzzlePiece *piece = m_selectedPieces.first();
+        piece->SetRotation(value);
+    }
 }
 
 
 //---------------------------------------------------------------------------------------------------------------------
 void PuzzleMainWindow::on_CurrentPiecePositionEdited()
 {
-//    ui->doubleSpinBoxCurrentPieceBoxPositionX->blockSignals(true);
-//    ui->doubleSpinBoxCurrentPieceBoxPositionY->blockSignals(true);
-
     if(m_selectedPieces.count() == 1)
     {
         VPuzzlePiece *piece = m_selectedPieces.first();
@@ -856,10 +850,6 @@ void PuzzleMainWindow::on_CurrentPiecePositionEdited()
                     UnitConvertor(ui->doubleSpinBoxCurrentPieceBoxPositionY->value(), m_layout->GetUnit(), Unit::Px));
         piece->SetPosition(pos);
     }
-
-//    ui->doubleSpinBoxCurrentPieceBoxPositionX->blockSignals(false);
-//    ui->doubleSpinBoxCurrentPieceBoxPositionY->blockSignals(false);
-
 }
 
 //---------------------------------------------------------------------------------------------------------------------

src/app/puzzle/puzzlemainwindow.ui

@@ -228,9 +228,9 @@
             <property name="geometry">
              <rect>
               <x>0</x>
-              <y>-542</y>
+              <y>0</y>
               <width>342</width>
-              <height>1302</height>
+              <height>1318</height>
              </rect>
             </property>
             <layout class="QVBoxLayout" name="verticalLayout">
@@ -333,7 +333,7 @@
                       <double>360.000000000000000</double>
                      </property>
                      <property name="singleStep">
-                      <double>0.100000000000000</double>
+                      <double>1.000000000000000</double>
                      </property>
                     </widget>
                    </item>

src/app/puzzle/vpuzzlegraphicspiece.cpp

@@ -92,6 +92,7 @@ void VPuzzleGraphicsPiece::Init()
     // Initialises the connectors
     connect(m_piece, &VPuzzlePiece::SelectionChanged, this, &VPuzzleGraphicsPiece::on_PieceSelectionChanged);
     connect(m_piece, &VPuzzlePiece::PositionChanged, this, &VPuzzleGraphicsPiece::on_PiecePositionChanged);
+    connect(m_piece, &VPuzzlePiece::RotationChanged, this, &VPuzzleGraphicsPiece::on_PieceRotationChanged);
 }
 
 //---------------------------------------------------------------------------------------------------------------------
@@ -265,6 +266,13 @@ void VPuzzleGraphicsPiece::on_PiecePositionChanged()
     setPos(m_piece->GetPosition());
 }
 
+//---------------------------------------------------------------------------------------------------------------------
+void VPuzzleGraphicsPiece::on_PieceRotationChanged()
+{
+    setTransformOriginPoint(boundingRect().center());
+    setRotation(-m_piece->GetRotation());
+}
+
 //---------------------------------------------------------------------------------------------------------------------
 QVariant VPuzzleGraphicsPiece::itemChange(GraphicsItemChange change, const QVariant &value)
 {

src/app/puzzle/vpuzzlegraphicspiece.h

@@ -49,15 +49,20 @@ public:
 
 public slots:
     /**
-     * @brief on_PieceSelectionChanged When the piece selection was changed
+     * @brief on_PieceSelectionChanged Slot called when the piece selection was changed
      */
     void on_PieceSelectionChanged();
 
     /**
-     * @brief on_PiecePositionChanged When the piece position was changed
+     * @brief on_PiecePositionChanged Slot called when the piece position was changed
      */
     void on_PiecePositionChanged();
 
+    /**
+     * @brief on_PieceRotationChanged Slot called when the piece rotation was changed
+     */
+    void on_PieceRotationChanged();
+
 protected:
     QRectF boundingRect() const override;
     QPainterPath shape() const override;

src/app/puzzle/vpuzzlepiece.cpp

@@ -27,6 +27,8 @@
  *************************************************************************/
 #include "vpuzzlepiece.h"
 
+#include <QtMath>
+
 #include "vpuzzlelayer.h"
 
 #include <QLoggingCategory>
@@ -142,8 +144,25 @@ QPointF VPuzzlePiece::GetPosition()
 //---------------------------------------------------------------------------------------------------------------------
 void VPuzzlePiece::SetRotation(qreal angle)
 {
-    Q_UNUSED(angle);
-    //TODO
+    m_pieceAngle = angle;
+
+    // make sure the angle is  [0 <= angle < 360]
+    while(m_pieceAngle >= 360)
+    {
+        m_pieceAngle -= 360;
+    }
+
+    while(m_pieceAngle < 0)
+    {
+        m_pieceAngle += 360;
+    }
+
+
+//    qreal currentAngle = GetRotation();
+//    qreal newAngle = angle - currentAngle;
+
+//    m_transform.rotate(newAngle);
+
 
     emit RotationChanged();
 }
@@ -151,8 +170,20 @@ void VPuzzlePiece::SetRotation(qreal angle)
 //---------------------------------------------------------------------------------------------------------------------
 qreal VPuzzlePiece::GetRotation()
 {
-    // TODO
-    return 0;
+    return m_pieceAngle;
+
+    // We don't use the QTransform vor now because the math behind it to retrieve the angle is not trivial.
+    // TODO / FIXME:  we can use QTransform later for optimization
+
+
+//    QTransform tmpTransform = m_transform;
+//    tmpTransform.translate(-tmpTransform.dx(), -tmpTransform.dy()); // make sure there is only the rotation in the matrix
+
+//    qreal angle = qRadiansToDegrees(qAcos(tmpTransform.m11()));
+
+//    qCDebug(pPiece, "new angle : %f", angle);
+
+//    return angle;
 }
 
 //---------------------------------------------------------------------------------------------------------------------

src/app/puzzle/vpuzzlepiece.h

@@ -127,7 +127,7 @@ public:
 
     /**
      * @brief SetRotation  Sets the rotation of the piece to the given angle.
-     * @param angle the angle of the rotation
+     * @param angle the angle of the rotation in degree
      */
     void SetRotation(qreal angle);
 
@@ -235,6 +235,8 @@ private:
     qreal m_grainlineAngle{0};
 
     QTransform m_transform{QTransform()};
+    // use a separate value for now because it's not easy to get the angle from the transform matrix
+    qreal m_pieceAngle{0};
 
     bool m_showSeamline{true};
     bool m_mirrorPiece{false};