/*---------------------------------------------------------------------------*
  Project:  NintendoWare
  File:     SmButton.cpp
  
  Copyright (C)2009-2011 Nintendo/HAL Laboratory, Inc.  All rights reserved.
  
  These coded instructions, statements, and computer programs contain proprietary
  information of Nintendo and/or its licensed developers and are protected by
  national and international copyright laws. They may not be disclosed to third
  parties or copied or duplicated in any form, in whole or in part, without the
  prior written consent of Nintendo.
  
  The content herein is highly confidential and should be handled accordingly.
  
  $Revision: $
 *---------------------------------------------------------------------------*/
#include <nn/os.h>

#include <nw/types.h>
#include <nw/ut.h>

#include "../include/SmButton.h"
#include "../include/SmTouchPanelStatus.h"

namespace
{

//----------------------------------------
// コンストラクタ
SmButton::SmButton( uint x, uint y, uint w, uint h )
: SmMessage( NULL ),
  m_Button( NULL ),
  m_PushButton( NULL ),
  m_IsPressed( false ),
  m_IsGrab( false ),
  m_IsSwitch( true ),
  m_OnColor( nw::ut::Color8::BLACK ),
  m_OffColor( nw::ut::Color8::RED )
{
    NW_NULL_ASSERT( m_Allocator );

    // ボタンポリゴン生成
    m_Button = new Sm2DPrimPC( 4 );
    NW_NULL_ASSERT( m_Button );
    {
        m_Button->SetVertex( 0, x,      y,      nw::ut::Color8::BLACK );
        m_Button->SetVertex( 1, x,      y + h,  nw::ut::Color8::BLACK );
        m_Button->SetVertex( 2, x + w,  y,      nw::ut::Color8::BLACK );
        m_Button->SetVertex( 3, x + w,  y + h,  nw::ut::Color8::BLACK );
    }
    m_Button->Update();

    // 押されたボタンポリゴン生成
    #define PRESSED_BTN_MARGIN  (4.f)
    m_PushButton = new Sm2DPrimPC( 4 );
    NW_NULL_ASSERT( m_PushButton );
    {
        m_PushButton->SetVertex( 0, x - PRESSED_BTN_MARGIN,      y - PRESSED_BTN_MARGIN,      nw::ut::Color8::YELLOW );
        m_PushButton->SetVertex( 1, x - PRESSED_BTN_MARGIN,      y + h + PRESSED_BTN_MARGIN,  nw::ut::Color8::YELLOW );
        m_PushButton->SetVertex( 2, x + w + PRESSED_BTN_MARGIN,  y - PRESSED_BTN_MARGIN,      nw::ut::Color8::YELLOW );
        m_PushButton->SetVertex( 3, x + w + PRESSED_BTN_MARGIN,  y + h + PRESSED_BTN_MARGIN,  nw::ut::Color8::YELLOW );
    }
    m_PushButton->Update();

    // コリジョン形状を登録
    m_Collision.SetRect( x, y, w, h );

    // 初期状態
    SetSwitch( m_IsSwitch );
}


//----------------------------------------
// デストラクタ
SmButton::~SmButton()
{
    if ( m_Button ) delete m_Button;
    m_Button = NULL;

    if ( m_PushButton ) delete m_PushButton;
    m_PushButton = NULL;
}


//----------------------------------------
// 描画
void SmButton::Render()
{
    if ( m_IsPressed )
    {
        m_PushButton->Render( GL_TRIANGLE_STRIP );
    }
    
    if ( m_OnColor != 0 && m_OffColor != 0 )
    {
        m_Button->Render( GL_TRIANGLE_STRIP );
    }
}


//----------------------------------------
// ボタン状態を設定する
void SmButton::SetSwitch( bool bswitch )
{
    m_IsSwitch = bswitch;

    if ( m_IsSwitch )
    {
        m_Button->SetVertexColor( m_OnColor );
    }
    else
    {
        m_Button->SetVertexColor( m_OffColor );
    }

    m_Button->Update();
}



//----------------------------------------
// ボタン状態をスワップする
void SmButton::SwapSwitch()
{
    if ( m_IsSwitch )
    {
        m_IsSwitch = false;
        m_Button->SetVertexColor( m_OffColor );
    }
    else
    {
        m_IsSwitch = true;
        m_Button->SetVertexColor( m_OnColor );
    }

    m_Button->Update();
}


//----------------------------------------
// ボタンカラーを設定する
void SmButton::SetColor( nw::ut::Color8 onColor, nw::ut::Color8 offColor )
{
    m_OnColor = onColor;
    m_OffColor = offColor;
}


//----------------------------------------
// メッセージ受信
bool SmButton::ReceveMessage( SmMessageType type, void* object, uint targetId )
{
    NW_UNUSED_VARIABLE(targetId);

    SmTouchPanelStatus*  touchPanelStaus = NULL;

    switch( type )
    {
    case SM_MESSAGE_TUCHPANEL_PRESS:
        {
            touchPanelStaus = static_cast<SmTouchPanelStatus*>(object);
            NW_NULL_ASSERT( touchPanelStaus );

            // 他処理で使用中でなければ
            if ( !touchPanelStaus->IsGrab() )
            {
                // コリジョン内であれば、
                if ( m_Collision.CheckInner( touchPanelStaus->GetX(), touchPanelStaus->GetY() ) )
                {
                    // 掴む
                    touchPanelStaus->Grab();
                    m_IsGrab    = true;
                    m_IsPressed = true;
                }
            }
        }
        break;

    case SM_MESSAGE_TUCHPANEL_MOTION:
        {
            touchPanelStaus = static_cast<SmTouchPanelStatus*>(object);
            NW_NULL_ASSERT( touchPanelStaus );
            
            m_LastX = touchPanelStaus->GetX();
            m_LastY = touchPanelStaus->GetY();
        }
        break;

    case SM_MESSAGE_TUCHPANEL_RELEASE:
        {
            touchPanelStaus = static_cast<SmTouchPanelStatus*>(object);
            NW_NULL_ASSERT( touchPanelStaus );

            // 放す
            if ( m_IsGrab )
            {
                touchPanelStaus->UnGrab();
                m_IsGrab = false;
                m_IsPressed = false;

                // リリースの際、範囲内であればアップデートをかける
                if ( m_Collision.CheckInner( m_LastX, m_LastY ) )
                {
                    // 状態をスワップする
                    SwapSwitch();

                    // Updateを送信
                    if ( m_Target )
                    {
                        m_Target->SendMessage( SM_MESSAGE_UPDATE_PARAM, NULL, m_Id );
                    }
                }
            }
        }
        break;

    default:
        break;
    }
    return 0;
}

} // namespace