frame.hpp

/*
    KTech, Kaup's C++ 2D terminal game engine library.
    Copyright (C) 2023-2025 Ethan Kaufman (AKA Kaup)
 
    This file is part of KTech.
 
    KTech is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    any later version.
 
    KTech is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
    along with KTech. If not, see <https://www.gnu.org/licenses/>.
*/
 
#pragma once
 
#include "../ktech.hpp"
 
class Frame : public KTech::Widget
{
public:
    Frame(KTech::Engine& engine,
        KTech::ID<KTech::UI> ui,
        KTech::Point position,
        KTech::UPoint size,
        KTech::RGBA unselected = KTech::RGBAColors::gray,
        KTech::RGBA selected = KTech::RGBAColors::white)
        : Widget(engine, ui, position), m_unselectedRGBA(unselected), m_selectedRGBA(selected)
    {
        // Texture
        SetSize(size);
    }
 
    void SetSize(KTech::UPoint size)
    {
        KTech::RGBA tempRGBA = m_selected ? m_selectedRGBA : m_unselectedRGBA;
        m_textures.resize(TEXTURES_SIZE);
        m_textures[ti_topLeftCorner].Simple(KTech::UPoint(1, 1), KTech::CellA('#', tempRGBA), KTech::Point(0, 0));
        m_textures[ti_topRightCorner].Simple(KTech::UPoint(1, 1), KTech::CellA('#', tempRGBA), KTech::Point(size.x - 1, 0));
        m_textures[ti_bottomLeftCorner].Simple(KTech::UPoint(1, 1), KTech::CellA('#', tempRGBA), KTech::Point(0, size.y - 1));
        m_textures[ti_bottomRightCorner].Simple(KTech::UPoint(1, 1), KTech::CellA('#', tempRGBA), KTech::Point(size.x - 1, size.y - 1));
        m_textures[ti_topFrame].Simple(KTech::UPoint(size.x - 2, 1), KTech::CellA('-', tempRGBA), KTech::Point(1, 0));
        m_textures[ti_leftFrame].Simple(KTech::UPoint(1, size.y - 2), KTech::CellA('|', tempRGBA), KTech::Point(0, 1));
        m_textures[ti_bottomFrame].Simple(KTech::UPoint(size.x - 2, 1), KTech::CellA('-', tempRGBA), KTech::Point(1, size.y - 1));
        m_textures[ti_rightFrame].Simple(KTech::UPoint(1, size.y - 2), KTech::CellA('|', tempRGBA), KTech::Point(size.x - 1, 1));
    }
 
private:
    enum TextureIndex : size_t
    {
        ti_topLeftCorner,
        ti_topRightCorner,
        ti_bottomLeftCorner,
        ti_bottomRightCorner,
        ti_topFrame,
        ti_leftFrame,
        ti_bottomFrame,
        ti_rightFrame,
        TEXTURES_SIZE
    };
 
    KTech::RGBA m_unselectedRGBA, m_selectedRGBA;
 
    void OnSelect() override
    {
        RenderSelected();
    }
 
    void OnDeselect() override
    {
        RenderUnselected();
    }
 
    void RenderSelected()
    {
        for (KTech::Texture& texture : m_textures)
        {
            texture.Transform([&](KTech::CellA& cell){ cell.f = m_selectedRGBA; });
        }
    }
 
    void RenderUnselected()
    {
        for (KTech::Texture& texture : m_textures)
        {
            texture.Transform([&](KTech::CellA& cell){ cell.f = m_unselectedRGBA; });
        }
    }
};