/*
 * This file is part of the Colobot: Gold Edition source code
 * Copyright (C) 2001-2023, Daniel Roux, EPSITEC SA & TerranovaTeam
 * http://epsitec.ch; http://colobot.info; http://github.com/colobot
 *
 * This program 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
 * (at your option) any later version.
 *
 * This program 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 this program. If not, see http://gnu.org/licenses
 */


#include "ui/controls/color.h"

#include "common/event.h"
#include "common/restext.h"

#include "graphics/core/renderers.h"
#include "graphics/core/transparency.h"

#include "graphics/engine/engine.h"

#include <string.h>


namespace Ui
{
const float DELAY1 = 0.4f;
const float DELAY2 = 0.1f;



// Object's constructor.

CColor::CColor() : CControl()
{
    m_bRepeat = false;
    m_repeat = 0.0f;

    m_color.r = 0.0f;
    m_color.g = 0.0f;
    m_color.b = 0.0f;
    m_color.a = 0.0f;
}

// Object's destructor.

CColor::~CColor()
{
}


// Creates a new button.

bool CColor::Create(const glm::vec2& pos, const glm::vec2& dim, int icon, EventType eventType)
{
    if ( eventType == EVENT_NULL )  eventType = GetUniqueEventType();

    CControl::Create(pos, dim, icon, eventType);

    if ( icon == -1 )
    {
        std::string name = GetResourceName(eventType);
        SetName(name);
    }

    return true;
}


// Management of an event.

bool CColor::EventProcess(const Event &event)
{
    if ( m_state & STATE_DEAD )  return true;

    CControl::EventProcess(event);

    if ( event.type == EVENT_FRAME && m_bRepeat )
    {
        if ( m_repeat != 0.0f )
        {
            m_repeat -= event.rTime;
            if ( m_repeat <= 0.0f )
            {
                m_repeat = DELAY2;

                m_event->AddEvent(Event(m_eventType));
                return false;
            }
        }
    }

    if ( event.type == EVENT_MOUSE_BUTTON_DOWN &&
         event.GetData<MouseButtonEventData>()->button == MOUSE_BUTTON_LEFT &&
         (m_state & STATE_VISIBLE)        &&
         (m_state & STATE_ENABLE)         )
    {
        if ( CControl::Detect(event.mousePos) )
        {
            m_repeat = DELAY1;

            m_event->AddEvent(Event(m_eventType));
            return false;
        }
    }

    if (event.type == EVENT_MOUSE_BUTTON_UP &&
        event.GetData<MouseButtonEventData>()->button == MOUSE_BUTTON_LEFT)
    {
        m_repeat = 0.0f;
    }

    return true;
}

// Draw the button.
void CColor::Draw()
{
    Gfx::Color     color;
    glm::vec2      p1, p2;

    if ( (m_state & STATE_VISIBLE) == 0 )  return;

    if ( m_state & STATE_SHADOW )
    {
        DrawShadow(m_pos, m_dim);
    }

    auto renderer = m_engine->GetUIRenderer();

    auto texture = m_engine->LoadTexture("textures/interface/button1.png");
    renderer->SetTexture(texture);
    renderer->SetTransparency(Gfx::TransparencyMode::NONE);
    CControl::Draw();

    p1.x = m_pos.x + (3.0f / 640.0f);
    p1.y = m_pos.y + (3.0f / 480.0f);
    p2.x = m_pos.x + m_dim.x - (3.0f / 640.0f);
    p2.y = m_pos.y + m_dim.y - (3.0f / 480.0f);

    color = GetColor();

    glm::u8vec4 col = { color.r * 255, color.g * 255, color.b * 255, color.a * 255 };

    renderer->SetTexture(Gfx::Texture{0});
    renderer->SetTransparency(Gfx::TransparencyMode::NONE);
    auto vertex = renderer->BeginPrimitive(Gfx::PrimitiveType::TRIANGLE_STRIP, 4);

    vertex[0] = { { p1.x, p1.y }, {}, col };
    vertex[1] = { { p1.x, p2.y }, {}, col };
    vertex[2] = { { p2.x, p1.y }, {}, col };
    vertex[3] = { { p2.x, p2.y }, {}, col };

    renderer->EndPrimitive();
    m_engine->AddStatisticTriangle(2);
}

void CColor::SetRepeat(bool bRepeat)
{
    m_bRepeat = bRepeat;
}

bool CColor::GetRepeat()
{
    return m_bRepeat;
}


void CColor::SetColor(Gfx::Color color)
{
    m_color = color;
}

Gfx::Color CColor::GetColor()
{
    return m_color;
}


}