Redesign. Move initialization in ui file. Use QListWidget instead of a custom solution. Basic functions do not work yet.

src/app/puzzle/puzzle.pri

@@ -51,4 +51,5 @@ HEADERS += \
 
 FORMS += \
     $$PWD/puzzlemainwindow.ui \
-    $$PWD/dialogs/dialogaboutpuzzle.ui
+    $$PWD/dialogs/dialogaboutpuzzle.ui \
+    $$PWD/vpiececarrousel.ui

src/app/puzzle/vpiececarrousel.cpp

@@ -26,98 +26,57 @@
  **
  *************************************************************************/
 #include "vpiececarrousel.h"
+#include "ui_vpiececarrousel.h"
 #include <QVBoxLayout>
 #include <QMessageBox>
 #include <QScrollBar>
 
 #include "../vmisc/backport/qoverload.h"
+#include "vpuzzlelayer.h"
 
 #include <QLoggingCategory>
+#include <QMenu>
+#include <QPainter>
 
 Q_LOGGING_CATEGORY(pCarrousel, "p.carrousel")
 
 //---------------------------------------------------------------------------------------------------------------------
 VPieceCarrousel::VPieceCarrousel(VPuzzleLayout *layout, QWidget *parent) :
     QWidget(parent),
-    m_layout(layout),
+    ui(new Ui::VPieceCarrousel),
-    m_comboBoxLayer(new QComboBox(this)),
+    m_layout(layout)
-    m_scrollArea(new QScrollArea(this)),
-    m_layersContainer(new QWidget(this)),
-    m_carrouselLayers(QList<VPieceCarrouselLayer *>())
 {
-    Init();
+    ui->setupUi(this);
-}
-
-//---------------------------------------------------------------------------------------------------------------------
-VPieceCarrousel::~VPieceCarrousel()
-{
-    delete m_comboBoxLayer;
-    delete m_layersContainer;
-}
-
-
-//---------------------------------------------------------------------------------------------------------------------
-void VPieceCarrousel::Init()
-{
-    // ------ first we initialize the structure of the carrousel
 
     // init the combo box
-    connect(m_comboBoxLayer, QOverload<int>::of(&QComboBox::currentIndexChanged), this,
+    connect(ui->comboBoxLayer, QOverload<int>::of(&QComboBox::currentIndexChanged), this,
             &VPieceCarrousel::on_ActiveLayerChanged);
 
-    // init the layers container and corresponding scroll area
+    ui->listWidget->setContextMenuPolicy(Qt::CustomContextMenu);
-    QWidget *layersContainerWrapper = new QWidget();
-
-    QVBoxLayout *layersContainerWrapperLayout = new QVBoxLayout();
-    layersContainerWrapperLayout->setMargin(0);
-    layersContainerWrapper->setLayout(layersContainerWrapperLayout);
-
-    QVBoxLayout *layersContainerLayout = new QVBoxLayout();
-    layersContainerLayout->setMargin(0);
-    m_layersContainer->setLayout(layersContainerLayout);
-    m_layersContainer->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
-    QSpacerItem *spacer = new QSpacerItem(10, 10, QSizePolicy::Expanding, QSizePolicy::Expanding);
-
-
-    layersContainerWrapperLayout->addWidget(m_layersContainer);
-    layersContainerWrapperLayout->addSpacerItem(spacer);
-
-    m_scrollArea->setWidgetResizable( true );
-    m_scrollArea->setWidget(layersContainerWrapper);
-
-    // init the layout of the piece carrousel
-    QVBoxLayout *mainLayout = new QVBoxLayout();
-    setLayout(mainLayout);
-
-    mainLayout->addWidget(m_comboBoxLayer);
-    mainLayout->addWidget(m_scrollArea);
 
     // ------ then we fill the carrousel with the layout content
     Refresh();
- }
+}
 
 //---------------------------------------------------------------------------------------------------------------------
 void VPieceCarrousel::Refresh()
 {
-
     // NOTE: alternative to clearing the carrousel and adding things again, we could make comparision
 
     // --- clears the content of the carrousel
     Clear();
 
     // --- add the content saved in the layout to the carrousel.
-    QList<VPuzzleLayer*> layers = m_layout->GetLayers();
+    // Do not rely on m_layout because we do not control it.
-    layers.prepend(m_layout->GetUnplacedPiecesLayer());
+    m_layers = m_layout->GetLayers();
+    m_layers.prepend(m_layout->GetUnplacedPiecesLayer());
 
-    for (auto layer : layers)
+    for (auto layer : m_layers)
     {
         // add layer name to combo
-        m_comboBoxLayer->addItem(layer->GetName());
+        ui->comboBoxLayer->blockSignals(true);
-
+        ui->comboBoxLayer->addItem(layer->GetName());
-        // add new carrousel layer
+        ui->comboBoxLayer->blockSignals(false);
-        VPieceCarrouselLayer *carrouselLayer = new VPieceCarrouselLayer(layer, this);
-        m_carrouselLayers.append(carrouselLayer);
-        m_layersContainer->layout()->addWidget(carrouselLayer);
     }
 
     on_ActiveLayerChanged(0);
@@ -129,31 +88,9 @@ void VPieceCarrousel::Refresh()
 void VPieceCarrousel::Clear()
 {
     // remove the combobox entries
-    int layerCount = m_comboBoxLayer->count();
+    ui->comboBoxLayer->clear();
-    for(int i=0;i<layerCount;i++)
-    {
-        m_comboBoxLayer->removeItem(0);
-    }
 
-    // remove the carrousel layers from the qlayout
+    ui->listWidget->clear();
-    while(!m_layersContainer->layout()->isEmpty())
-    {
-        QLayoutItem* item = m_layersContainer->layout()->takeAt(0);
-        if(item != nullptr)
-        {
-            delete item;
-        }
-    }
-
-    // Removes and deletes the carrousel layers from the list
-    while (!m_carrouselLayers.isEmpty())
-    {
-        VPieceCarrouselLayer *carrouselLayer = m_carrouselLayers.takeLast();
-        if(carrouselLayer != nullptr)
-        {
-            delete carrouselLayer;
-        }
-    }
 }
 
 //---------------------------------------------------------------------------------------------------------------------
@@ -161,10 +98,21 @@ void VPieceCarrousel::on_ActiveLayerChanged(int index)
 {
     qCDebug(pCarrousel, "index changed %i", index);
 
-    int j=0;
+    ui->listWidget->clear();
-    for (VPieceCarrouselLayer *carrouselLayer: m_carrouselLayers) {
+
-        carrouselLayer->setVisible(j == index);
+    if (index >= 0 && index < m_layers.size())
-        j++;
+    {
+        VPuzzleLayer *layer = m_layers.at(index);
+
+        if (layer)
+        {
+            QList<VPuzzlePiece*> pieces = layer->GetPieces();
+
+            for (auto piece : pieces)
+            {
+                new QListWidgetItem(piece->PieceIcon(QSize(120, 120)) , piece->GetName(), ui->listWidget);
+            }
+        }
     }
 }
 
@@ -178,47 +126,26 @@ void VPieceCarrousel::SetOrientation(Qt::Orientation orientation)
 //---------------------------------------------------------------------------------------------------------------------
 void VPieceCarrousel::RefreshOrientation()
 {
-    QBoxLayout::Direction direction = (m_orientation == Qt::Horizontal)?
-                QBoxLayout::LeftToRight
-                :
-                QBoxLayout::TopToBottom;
-
-    // Update the various qlayouts
-    QBoxLayout* mainScrollAreaLayout = qobject_cast<QBoxLayout*>(m_layersContainer->layout());
-    mainScrollAreaLayout->setDirection(direction);
-
-    QBoxLayout* layerContainerWrapper = qobject_cast<QBoxLayout*>(m_scrollArea->widget()->layout());
-    layerContainerWrapper->setDirection(direction);
-
-    for (VPieceCarrouselLayer *widget: m_carrouselLayers) {
-        QBoxLayout* layerLayout = qobject_cast<QBoxLayout*>(widget->layout());
-        layerLayout->setDirection(direction);
-    }
-
     // then update the scrollarea min height / width and scrollbar behaviour
     if(m_orientation == Qt::Horizontal)
     {
-        m_comboBoxLayer->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
+        ui->comboBoxLayer->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
 
         // scroll bar policy of scroll area
-        m_scrollArea->setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
+        ui->listWidget->setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
-        m_scrollArea->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOn);
+        ui->listWidget->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOn);
 
-        // FIXME: find a nicer way than putting directly the 120 height of the piece
+        ui->listWidget->setFlow(QListView::TopToBottom);
-        m_scrollArea->setMinimumHeight(128 + m_scrollArea->horizontalScrollBar()->sizeHint().height()+2);
-        m_scrollArea->setMinimumWidth(0);
     }
     else // Qt::Vertical
     {
-        m_comboBoxLayer->setSizePolicy(QSizePolicy::Minimum, QSizePolicy::Minimum);
+        ui->comboBoxLayer->setSizePolicy(QSizePolicy::Minimum, QSizePolicy::Minimum);
 
         // scroll bar policy of scroll area
-        m_scrollArea->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOn);
+        ui->listWidget->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOn);
-        m_scrollArea->setHorizontalScrollBarPolicy(Qt::ScrollBarAsNeeded);
+        ui->listWidget->setHorizontalScrollBarPolicy(Qt::ScrollBarAsNeeded);
 
-        m_scrollArea->setMinimumHeight(0);
+        ui->listWidget->setFlow(QListView::LeftToRight);
-        m_scrollArea->setMinimumWidth(124 + m_scrollArea->verticalScrollBar()->sizeHint().width()+2);
-        // FIXME: find a nicer way than putting directly the 120 width of the piece
     }
 }
 

src/app/puzzle/vpiececarrousel.h

@@ -34,14 +34,18 @@
 #include <QScrollArea>
 #include "vpuzzlelayout.h"
 #include "vpuzzlepiece.h"
-#include "vpiececarrousellayer.h"
+
+namespace Ui
+{
+class VPieceCarrousel;
+}
 
 class VPieceCarrousel : public QWidget
 {
     Q_OBJECT
 public:
     explicit VPieceCarrousel(VPuzzleLayout *layout, QWidget *parent = nullptr);
-    virtual ~VPieceCarrousel();
+    virtual ~VPieceCarrousel() = default;
 
     /**
      * @brief SetOrientation Sets the orientation to the given value and refreshes
@@ -56,11 +60,6 @@ public:
      */
     void RefreshOrientation();
 
-    /**
-     * @brief Inits the carroussel
-     */
-    void Init();
-
     /**
      * @brief Refresh Refreshes the content of the carrousel
      */
@@ -78,14 +77,10 @@ public:
 
 private:
     Q_DISABLE_COPY(VPieceCarrousel)
+    Ui::VPieceCarrousel *ui;
 
     VPuzzleLayout *m_layout;
-
+    QList<VPuzzleLayer*> m_layers{};
-    QComboBox *m_comboBoxLayer;
-    QScrollArea *m_scrollArea;
-    QWidget *m_layersContainer;
-
-    QList<VPieceCarrouselLayer*> m_carrouselLayers;
 
     Qt::Orientation m_orientation{Qt::Vertical};
 

src/app/puzzle/vpiececarrousel.ui

@@ -0,0 +1,77 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>VPieceCarrousel</class>
+ <widget class="QWidget" name="VPieceCarrousel">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>583</width>
+    <height>557</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string notr="true">Carrousel</string>
+  </property>
+  <layout class="QVBoxLayout" name="verticalLayout">
+   <property name="leftMargin">
+    <number>6</number>
+   </property>
+   <property name="topMargin">
+    <number>6</number>
+   </property>
+   <property name="rightMargin">
+    <number>6</number>
+   </property>
+   <property name="bottomMargin">
+    <number>6</number>
+   </property>
+   <item>
+    <widget class="QComboBox" name="comboBoxLayer">
+     <property name="sizePolicy">
+      <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
+       <horstretch>0</horstretch>
+       <verstretch>0</verstretch>
+      </sizepolicy>
+     </property>
+    </widget>
+   </item>
+   <item>
+    <widget class="QListWidget" name="listWidget">
+     <property name="verticalScrollBarPolicy">
+      <enum>Qt::ScrollBarAlwaysOn</enum>
+     </property>
+     <property name="dragDropMode">
+      <enum>QAbstractItemView::DragOnly</enum>
+     </property>
+     <property name="iconSize">
+      <size>
+       <width>120</width>
+       <height>120</height>
+      </size>
+     </property>
+     <property name="movement">
+      <enum>QListView::Static</enum>
+     </property>
+     <property name="flow">
+      <enum>QListView::TopToBottom</enum>
+     </property>
+     <property name="resizeMode">
+      <enum>QListView::Adjust</enum>
+     </property>
+     <property name="spacing">
+      <number>6</number>
+     </property>
+     <property name="viewMode">
+      <enum>QListView::IconMode</enum>
+     </property>
+     <property name="sortingEnabled">
+      <bool>true</bool>
+     </property>
+    </widget>
+   </item>
+  </layout>
+ </widget>
+ <resources/>
+ <connections/>
+</ui>

src/app/puzzle/vpuzzlepiece.cpp

@@ -32,7 +32,9 @@
 #include "vpuzzlelayer.h"
 #include "../vmisc/def.h"
 
+#include <QIcon>
 #include <QLoggingCategory>
+#include <QPainter>
 
 Q_LOGGING_CATEGORY(pPiece, "p.piece")
 
@@ -253,3 +255,46 @@ void VPuzzlePiece::SetLayer(VPuzzleLayer* layer)
         m_layer = layer;
     }
 }
+
+//---------------------------------------------------------------------------------------------------------------------
+QIcon VPuzzlePiece::PieceIcon(const QSize &size) const
+{
+    QVector<QPointF> points = GetSeamLine();
+    if(points.isEmpty())
+    {
+        points = GetCuttingLine();
+    }
+
+    QPolygonF shape(points);
+    shape << shape.first();
+
+    QRectF boundingRect = shape.boundingRect();
+    qreal canvasSize = qMax(boundingRect.height(), boundingRect.width());
+    QRectF canvas = QRectF(0, 0, canvasSize, canvasSize);
+
+    qreal dx = canvas.center().x() - boundingRect.center().x();
+    qreal dy = canvas.center().y() - boundingRect.center().y();
+
+    QPixmap pixmap(size);
+    pixmap.fill(QColor("white"));
+
+    QPainter painter;
+    painter.begin(&pixmap);
+    painter.setRenderHint(QPainter::Antialiasing);
+    painter.setRenderHint(QPainter::SmoothPixmapTransform);
+
+    int spacing = 2;
+    painter.translate(spacing, spacing);
+
+    qreal scaleFactorX = canvasSize * 100 / (size.width() - spacing*2) / 100;
+    qreal scaleFactorY = canvasSize * 100 / (size.height() - spacing*2) / 100;
+    painter.scale(1./scaleFactorX, 1./scaleFactorY);
+    painter.setPen(QPen(Qt::black, 0.8*qMax(scaleFactorX, scaleFactorY)));
+
+    painter.translate(dx, dy);
+
+    painter.drawPolygon(shape);
+    painter.end();
+
+    return QIcon(pixmap);
+}

src/app/puzzle/vpuzzlepiece.h

@@ -198,6 +198,8 @@ public:
      */
     void SetLayer(VPuzzleLayer* layer);
 
+    QIcon PieceIcon(const QSize &size) const;
+
 signals:
     /**
      * @brief SelectionChanged emited when the selection of the piece was