Layout.h

// Copyright(c) 2019 - 2020, #Momo
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// 
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// modification, are permitted provided that the following conditions are met :
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// 1. Redistributions of source code must retain the above copyright notice, this
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// 2. Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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#pragma once

#include "Utilities/ImGui/ImGuiBase.h"
#include "Core/Application/Application.h"

namespace MxEngine::GUI
{
    struct Indent
    {
        float indent;

        inline Indent(float indent) 
            : indent(indent)
        {
            ImGui::Indent(indent);
        }

        inline ~Indent()
        {
            ImGui::Unindent(indent);
        }
    };

    // GUI_TREE_NODE is a special macro to create tree nodes with offset all code of node must be places after its name as argument, i.e. GUI_TREE_NODE(NAME, CODE);
    #define GUI_TREE_NODE(name, ...) if(ImGui::CollapsingHeader(name)) { GUI::Indent _(5.0f); __VA_ARGS__; }
    #define SCOPE_TREE_NODE(name) if (!ImGui::CollapsingHeader(name)) return; GUI::Indent _(5.0f)

    inline bool InputIntOnClick(const char* title, int* v, const char* buttonText = "apply")
    {
        ImGui::PushID(title);
        ImGui::AlignTextToFramePadding();
        ImGui::Text(title);
        ImGui::SameLine();
        ImGui::InputInt("", v); 
        ImGui::SameLine();
        bool result = ImGui::Button(buttonText);
        ImGui::PopID();
        return result;
    }

    inline bool InputFloatOnClick(const char* title, float* v, const char* buttonText = "apply")
    {
        ImGui::PushID(title);
        ImGui::AlignTextToFramePadding();
        ImGui::Text(title);
        ImGui::SameLine();
        ImGui::InputFloat("", v);
        ImGui::SameLine();
        bool result = ImGui::Button(buttonText);
        ImGui::PopID();
        return result;
    }

    inline bool InputTextOnClick(const char* text, MxString& str, size_t sizeRequired, const char* buttonText = "apply")
    {
        str.resize(sizeRequired, '\0');
        ImGui::PushID((void*)&str);
        if (text != nullptr)
        {
            ImGui::AlignTextToFramePadding();
            ImGui::Text(text);
            ImGui::SameLine();
        }
        ImGui::InputText("", str.data(), sizeRequired);
        ImGui::SameLine();
        bool result = ImGui::Button(buttonText);
        ImGui::PopID();
    
        while (result && str.size() > 0 && str.back() == '\0')
            str.pop_back(); // remove extra null terminators from string

        return result;
    }
}