Extended sample for layers

AmonRaNet · Jan 7, 2024 · eb02e42 · eb02e42
1 parent c7662d6
commit eb02e42
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Showing 2 changed files with 93 additions and 38 deletions.
diff --git a/samples/layers/mainwindow.cpp b/samples/layers/mainwindow.cpp
@@ -19,12 +19,16 @@
 #include "mainwindow.h"
 
 #include <QCheckBox>
+#include <QHBoxLayout>
+#include <QListWidget>
+#include <QPushButton>
 #include <QTimer>
 #include <QVBoxLayout>
 
 #include <helpers.h>
 #include <rectangle.h>
 
+#include <QGeoView/QGVLayer.h>
 #include <QGeoView/QGVLayerOSM.h>
 #include <QGeoView/QGVWidgetCompass.h>
 #include <QGeoView/QGVWidgetScale.h>
@@ -45,34 +49,27 @@ MainWindow::MainWindow()
     // Widgets
     mMap->addWidget(new QGVWidgetCompass());
     mMap->addWidget(new QGVWidgetZoom());
+    mMap->addWidget(new QGVWidgetScale());
 
     // Background layer
     auto osmLayer = new QGVLayerOSM();
     mMap->addItem(osmLayer);
 
-    // Add layers
-    for (int l = 0; l < 3; l++) {
-        auto* itemsLayer = new QGVLayer();
-        mMap->addItem(itemsLayer);
-
-        // Add items to custom layer
-        for (int i = 0; i < 10; i++) {
-            const int size = 50;
-
-            auto item = new Rectangle(Helpers::randRect(mMap, targetArea(), size),
-                                      static_cast<Qt::GlobalColor>(Qt::red + l));
-            item->setFlag(QGV::ItemFlag::IgnoreAzimuth);
-            item->setFlag(QGV::ItemFlag::IgnoreScale);
-
-            itemsLayer->addItem(item);
-        }
-    }
-
     // Options list
-    centralWidget()->layout()->addWidget(createLayersList());
+    QWidget* widget = new QWidget();
+    widget->setLayout(new QHBoxLayout());
+    widget->layout()->addWidget(createOptionsList());
+    widget->layout()->addWidget(createLayersList());
+    centralWidget()->layout()->addWidget(widget);
 
     // Show target area
-    QTimer::singleShot(100, this, [this]() { mMap->cameraTo(QGVCameraActions(mMap).scaleTo(targetArea())); });
+    QTimer::singleShot(100, this, [this]() {
+        mMap->cameraTo(QGVCameraActions(mMap).scaleTo(targetArea()));
+
+        addLayer();
+        addLayer();
+        addLayer();
+    });
 }
 
 MainWindow::~MainWindow()
@@ -84,30 +81,82 @@ QGV::GeoRect MainWindow::targetArea() const
     return QGV::GeoRect(QGV::GeoPos(51.848624, 14.7), QGV::GeoPos(51.743758, 14.9));
 }
 
-QGroupBox* MainWindow::createLayersList()
+QGroupBox* MainWindow::createOptionsList()
 {
-    const QList<QPair<QString, QGVItem*>> layers = {
-        { "Layer 1", mMap->getItem(1) },
-        { "Layer 2", mMap->getItem(2) },
-        { "Layer 3", mMap->getItem(3) },
-    };
+    QGroupBox* groupBox = new QGroupBox(tr("Control"));
+    groupBox->setLayout(new QVBoxLayout);
+
+    {
+        QPushButton* addButton = new QPushButton("Add layer");
+        QPushButton* removeButton = new QPushButton("Remove last layer");
+        QWidget* widget = new QWidget();
+        widget->setLayout(new QHBoxLayout());
+        widget->layout()->addWidget(addButton);
+        widget->layout()->addWidget(removeButton);
 
-    QGroupBox* groupBox = new QGroupBox(tr("Layers"));
+        groupBox->layout()->addWidget(widget);
+
+        connect(addButton, &QPushButton::clicked, this, &MainWindow::addLayer);
+        connect(removeButton, &QPushButton::clicked, this, &MainWindow::removeLayer);
+    }
+
+    return groupBox;
+}
+
+QGroupBox* MainWindow::createLayersList()
+{
+    QGroupBox* groupBox = new QGroupBox(tr("List of layers"));
     groupBox->setLayout(new QVBoxLayout);
 
-    for (auto pair : layers) {
-        auto name = pair.first;
-        auto layer = pair.second;
+    mList = new QListWidget();
+    groupBox->layout()->addWidget(mList);
+    updateListOfLayers();
+
+    return groupBox;
+}
+
+void MainWindow::addLayer()
+{
+    const QGV::GeoRect layerTargetArea = mMap->getProjection()->projToGeo(mMap->getCamera().projRect());
+    const Qt::GlobalColor layerColor = static_cast<Qt::GlobalColor>(Qt::red + Helpers::randomInt(0, 10));
+
+    auto* itemsLayer = new QGVLayer();
+    itemsLayer->setName("Layer with color " + QVariant::fromValue(layerColor).toString());
 
-        QCheckBox* checkButton = new QCheckBox(name);
-        groupBox->layout()->addWidget(checkButton);
+    // Add items to custom layer
+    for (int i = 0; i < 10; i++) {
+        const int size = 50;
 
-        connect(checkButton, &QCheckBox::toggled, this, [layer, layers](const bool checked) {
-            layer->setVisible(checked);
-        });
+        auto item = new Rectangle(Helpers::randRect(mMap, layerTargetArea, size), layerColor);
+        item->setFlag(QGV::ItemFlag::IgnoreAzimuth);
+        item->setFlag(QGV::ItemFlag::IgnoreScale);
 
-        checkButton->setChecked(true);
+        itemsLayer->addItem(item);
     }
 
-    return groupBox;
+    mMap->addItem(itemsLayer);
+
+    updateListOfLayers();
+}
+
+void MainWindow::removeLayer()
+{
+    if (mMap->countItems() > 1) {
+        mMap->removeItem(mMap->getItem(mMap->countItems() - 1));
+    }
+
+    updateListOfLayers();
+}
+
+void MainWindow::updateListOfLayers()
+{
+    mList->clear();
+
+    for (int i = 0; i < mMap->countItems(); i++) {
+        QGVLayer* layer = dynamic_cast<QGVLayer*>(mMap->getItem(i));
+        if (layer == nullptr)
+            continue;
+
+        mList->addItem(layer->getName());
+    }
 }
diff --git a/samples/layers/mainwindow.h b/samples/layers/mainwindow.h
@@ -19,9 +19,9 @@
 #pragma once
 
 #include <QGroupBox>
+#include <QListWidget>
 #include <QMainWindow>
 
-#include <QGeoView/QGVLayer.h>
 #include <QGeoView/QGVMap.h>
 
 class MainWindow : public QMainWindow
@@ -34,8 +34,14 @@ class MainWindow : public QMainWindow
 
     QGV::GeoRect targetArea() const;
 
+    QGroupBox* createOptionsList();
     QGroupBox* createLayersList();
 
+    void addLayer();
+    void removeLayer();
+    void updateListOfLayers();
+
 private:
     QGVMap* mMap;
+    QListWidget* mList;
 };