LibreVNA/Software/PC_Application/LibreVNA-GUI/CustomWidgets/tilewidget.cpp

#include "tilewidget.h"

#include "ui_tilewidget.h"
#include "Traces/tracexyplot.h"
#include "Traces/tracesmithchart.h"
#include "Traces/tracewaterfall.h"
#include "Traces/tracepolarchart.h"
#include "Traces/eyediagramplot.h"

#include <QDebug>

TileWidget::TileWidget(TraceModel &model, QWidget *parent) :
    QWidget(parent),
    fullScreenPlot(nullptr),
    ui(new Ui::TileWidget),
    splitter(0),
    isSplit(false),
    parent(0),
    child1(0),
    child2(0),
    hasContent(false),
    isFullScreen(false),
    content(0),
    model(model)
{
    ui->setupUi(this);
    auto layout = new QGridLayout;
    layout->setContentsMargins(0,0,0,0);
    auto fsLayout = new QGridLayout;
    fsLayout->setContentsMargins(0,0,0,0);
    ui->ContentPage->setLayout(layout);
    ui->ContentFullScreenMode->setLayout(fsLayout);
    ui->bClose->setVisible(false);
}

TileWidget::~TileWidget()
{
    delete ui;
}

void TileWidget::clear()
{
    if(hasContent) {
        delete content;
        content = nullptr;
        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;
        case TracePlot::Type::Waterfall:
            plotname = "Waterfall";
            break;
        case TracePlot::Type::PolarChart:
            plotname = "PolarChart";
            break;
        case TracePlot::Type::EyeDiagram:
            plotname = "EyeDiagram";
            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 if (plotname == "XY-plot"){
            content = new TraceXYPlot(model);
        } else if (plotname == "Waterfall"){
            content = new TraceWaterfall(model);
        } else if (plotname == "PolarChart"){
            content = new TracePolarChart(model);
        } else if (plotname == "EyeDiagram"){
            content = new EyeDiagramPlot(model);
        }
        if(content) {
            setContent(content);
            content->fromJSON(j["plotsettings"]);
        }
    }
}

bool TileWidget::allLimitsPassing()
{
    if(isSplit) {
        return child1->allLimitsPassing() && child2->allLimitsPassing();
    } else if(hasContent) {
        return content->getLimitPassing();
    } else {
        // empty tile always passes
        return true;
    }
}

void TileWidget::setSplitPercentage(int percentage)
{
    if(!isSplit) {
        return;
    }
    splitter->setStretchFactor(0, percentage);
    splitter->setStretchFactor(1, 100 - percentage);
}

void TileWidget::splitVertically(bool moveContentToSecondChild)
{
    if(isSplit) {
        return;
    }
    isSplit = true;
    splitter = new QSplitter(Qt::Vertical);
    split(moveContentToSecondChild);
    tryMinimize();
}

void TileWidget::splitHorizontally(bool moveContentToSecondChild)
{
    if(isSplit) {
        return;
    }
    isSplit = true;
    splitter = new QSplitter(Qt::Horizontal);
    split(moveContentToSecondChild);
    tryMinimize();
}

void TileWidget::closeTile()
{
    if(!parent) {
        // Unable to close toplevel tile
        return;
    }
    auto pTile = parent;
    TileWidget *absorbedTile;
    if(this == parent->child1) {
        absorbedTile = parent->child2;
    } else {
        absorbedTile = parent->child1;
    }
    delete this;

    if(absorbedTile->isSplit) {
        pTile->isSplit = true;
        pTile->child1 = absorbedTile->child1;
        pTile->child2 = absorbedTile->child2;
        pTile->child1->parent = pTile;
        pTile->child2->parent = pTile;
        pTile->ui->ContentPage->layout()->addWidget(absorbedTile->splitter);
        auto oldsplitter = pTile->splitter;
        pTile->splitter = absorbedTile->splitter;
        delete absorbedTile;
        delete oldsplitter;
    } else if(absorbedTile->hasContent) {
        pTile->setContent(absorbedTile->content);
        delete absorbedTile;
        pTile->isSplit = false;
        delete pTile->splitter;
        pTile->splitter = nullptr;
    } else {
        delete absorbedTile;
        pTile->isSplit = false;
        pTile->hasContent = false;
        delete pTile->splitter;
        pTile->ui->stack->setCurrentWidget(pTile->ui->TilePage);
    }
}

void TileWidget::setPlot(TracePlot *plot)
{
    if(!isSplit && !hasContent) {
        setContent(plot);
    }
}

void TileWidget::removePlot()
{
    if(hasContent) {
        content->setParentTile(nullptr);
        removeContent();
    }
}

TileWidget::TileWidget(TraceModel &model, TileWidget &parent)
    : TileWidget(model)
{
    this->parent = &parent;
    ui->bClose->setVisible(true);
}

void TileWidget::split(bool moveContentToSecondChild)
{
    splitter->setHandleWidth(0);
    child1 = new TileWidget(model, *this);
    child2 = new TileWidget(model, *this);
    splitter->addWidget(child1);
    splitter->addWidget(child2);
    ui->ContentPage->layout()->addWidget(splitter);
    if(hasContent) {
        if(moveContentToSecondChild) {
            child2->setContent(content);
        } else {
            child1->setContent(content);
        }
        removeContent();
    }

    ui->stack->setCurrentWidget(ui->ContentPage);
}

void TileWidget::setContent(TracePlot *plot)
{
    content = plot;
    content->setParentTile(this);
    hasContent = true;
    ui->ContentPage->layout()->addWidget(plot);
    ui->stack->setCurrentWidget(ui->ContentPage);
    connect(content, &TracePlot::deleted, this, &TileWidget::plotDeleted);
    connect(content, &TracePlot::doubleClicked, this, &TileWidget::on_plotDoubleClicked);
}

void TileWidget::removeContent()
{
    if(hasContent) {
        disconnect(content, &TracePlot::deleted, this, &TileWidget::plotDeleted);
        disconnect(content, &TracePlot::doubleClicked, this, &TileWidget::on_plotDoubleClicked);
        hasContent = false;
        content = nullptr;
        ui->stack->setCurrentWidget(ui->TilePage);
    }
}

void TileWidget::on_plotDoubleClicked()
{
    setFullScreen();
}

void TileWidget::setFullScreen(void)
{
    auto clickedTile = this;

    if(!clickedTile->parent) {
        // Toplevel tile is already in full screen
        return;
    }

    auto rootTile = findRootTile();

    rootTile->fullScreenPlot = clickedTile->content;

    if (isFullScreen == false)
    {
        ui->ContentPage->layout()->removeWidget(clickedTile->content);
        rootTile->ui->ContentFullScreenMode->layout()->addWidget(rootTile->fullScreenPlot);
        rootTile->ui->stack->setCurrentWidget(rootTile->ui->ContentFullScreenMode);
        isFullScreen = true;
    }
    else {
        rootTile->ui->stack->setCurrentWidget(rootTile->ui->ContentPage);
        rootTile->ui->ContentFullScreenMode->layout()->removeWidget(rootTile->fullScreenPlot);
        ui->ContentPage->layout()->addWidget(clickedTile->content);
        isFullScreen = false;
    }
}

TileWidget* TileWidget::findRootTile(void)
{
    auto node = this;
    while (node->parent != nullptr) { // root tile should nullptr
        node = node->parent;
    }
    return node;
}

void TileWidget::on_bSmithchart_clicked()
{
    setContent(new TraceSmithChart(model));
}

void TileWidget::on_bXYplot_clicked()
{
    auto plot = new TraceXYPlot(model);
    setContent(plot);
    plot->axisSetupDialog();
}

void TileWidget::plotDeleted()
{
    tryMinimize();

    ui->stack->setCurrentWidget(ui->TilePage);
    hasContent = false;
    content = nullptr;
}

void TileWidget::tryMinimize()
{
    if (isFullScreen)
    {
        auto rootTile = findRootTile();
        rootTile->ui->stack->setCurrentWidget(rootTile->ui->ContentPage);
    }
}

void TileWidget::on_bWaterfall_clicked()
{
    setContent(new TraceWaterfall(model));
}

void TileWidget::on_bPolarchart_clicked()
{
    setContent(new TracePolarChart(model));
}

void TileWidget::on_eyeDiagram_clicked()
{
    auto plot = new EyeDiagramPlot(model);
    setContent(plot);
    plot->axisSetupDialog();
}