satdump/src-core/handler/tree.h

#pragma once

#include "core/style.h"

struct TreeDrawerToClean
{
    float SmallOffsetX = 11.0f - 22; // for now, a hardcoded value; should take into account tree indent size

    ImDrawList *drawList = nullptr;

    ImVec2 verticalLineStart = {0, 0};

    ImVec2 verticalLineEnd = {0, 0};

    void start()
    {
        drawList = ImGui::GetWindowDrawList();

        verticalLineStart = ImGui::GetCursorScreenPos();
        verticalLineStart.x += SmallOffsetX * ui_scale; // to nicely line up with the arrow symbol
        verticalLineEnd = verticalLineStart;
    }

    bool node(std::string icon)
    {
        const float HorizontalTreeLineSize = 8.0f * ui_scale; // chosen arbitrarily
        const float minY = ImGui::GetCursorScreenPos().y
#ifndef _WIN32
                           - 20 * ui_scale; // TODOREWORK. Windows is a PAIN
#else
            ;
#endif
        const float midpoint = minY + HorizontalTreeLineSize;
        drawList->AddLine(ImVec2(verticalLineStart.x, midpoint), ImVec2(verticalLineStart.x + HorizontalTreeLineSize, midpoint), style::theme.treeview_icon);
        drawList->AddText(ImVec2(verticalLineStart.x + HorizontalTreeLineSize * 2.0f, minY), style::theme.treeview_icon, icon.c_str());
        verticalLineEnd.y = midpoint;
        return false;
    }

    float end()
    {
        drawList->AddLine(verticalLineStart, verticalLineEnd, style::theme.treeview_icon);

        return verticalLineEnd.y - verticalLineStart.y;
    }
};