Save/load trace and graph setup

Software/PC_Application/CustomWidgets/tilewidget.cpp

@@ -28,6 +28,73 @@ TileWidget::~TileWidget()
     delete ui;
 }
 
+void TileWidget::clear()
+{
+    if(hasContent) {
+        delete content;
+        hasContent = false;
+    }
+    if(isSplit) {
+        delete child1;
+        delete child2;
+        isSplit = false;
+        delete splitter;
+    }
+}
+
+nlohmann::json TileWidget::toJSON()
+{
+    nlohmann::json j;
+    j["split"] = isSplit;
+    if(isSplit) {
+        j["orientation"] = splitter->orientation() == Qt::Horizontal ? "horizontal" : "vertical";
+        j["sizes"] = splitter->sizes();
+        j["tile1"] = child1->toJSON();
+        j["tile2"] = child2->toJSON();
+    }
+    if(hasContent) {
+        std::string plotname;
+        switch(content->getType()) {
+        case TracePlot::Type::SmithChart:
+            plotname = "smithchart";
+            break;
+        case TracePlot::Type::XYPlot:
+            plotname = "XY-plot";
+            break;
+        }
+        j["plot"] = plotname;
+        j["plotsettings"] = content->toJSON();
+    }
+    return j;
+}
+
+void TileWidget::fromJSON(nlohmann::json j)
+{
+    // delete all childs before parsing json
+    clear();
+    bool split = j.value("split", false);
+    if(split) {
+        if(j["orientation"] == "horizontal") {
+            splitHorizontally();
+        } else {
+            splitVertically();
+        }
+        splitter->setSizes(j["sizes"]);
+        child1->fromJSON(j["tile1"]);
+        child2->fromJSON(j["tile2"]);
+    } else if(j.contains("plot")) {
+        // has a plot enabled
+        auto plotname = j["plot"];
+        if(plotname == "smithchart") {
+            content = new TraceSmithChart(model);
+        } else {
+            content = new TraceXYPlot(model);
+        }
+        setContent(content);
+        content->fromJSON(j["plotsettings"]);
+    }
+}
+
 void TileWidget::splitVertically()
 {
     if(isSplit) {

Software/PC_Application/CustomWidgets/tilewidget.h

@@ -5,12 +5,13 @@
 #include "Traces/traceplot.h"
 #include <QSplitter>
 #include "Traces/tracemodel.h"
+#include "savable.h"
 
 namespace Ui {
 class TileWidget;
 }
 
-class TileWidget : public QWidget
+class TileWidget : public QWidget, public Savable
 {
     Q_OBJECT
 
@@ -20,6 +21,12 @@ public:
 
     TileWidget *Child1() { return child1; };
     TileWidget *Child2() { return child2; };
+
+    // closes all plots/childs, leaving only the tilewidget at the top
+    void clear();
+
+    virtual nlohmann::json toJSON() override;
+    virtual void fromJSON(nlohmann::json j) override;
 public slots:
     void splitVertically();
     void splitHorizontally();