/*---------------------------------------------------------------------------*
  Project:  NintendoWare
  File:     SmSliderBar.cpp

  Copyright (C)2009-2010 Nintendo Co., Ltd./HAL Laboratory, Inc.  All rights reserved.

  These coded instructions, statements, and computer programs contain
  proprietary information of Nintendo of America Inc. and/or Nintendo
  Company Ltd., and are protected by Federal copyright law.  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.

  $Revision: 1 $
 *---------------------------------------------------------------------------*/

#include "../include/SmLytSliderBar.h"
#include "../include/SmTouchPanelStatus.h"

namespace
{
    
//----------------------------------------
// コンストラクタ
SmLytSliderBar::SmLytSliderBar( f32 x, f32 y, SmLayout* smLayout )
: SmMessage( NULL ),
  m_Layout( smLayout ),
  m_HandlePane( NULL ),
  m_Param( 0.0f ),
  m_IsGrab( false ),
  m_RangeMinY( 0 ),
  m_RangeMaxY( 0 ),
  m_BaseY( y )
{
    NW_NULL_ASSERT( m_Layout );

    SmLayoutResource* layoutRes = m_Layout->GetLayoutResource();
    nw::ut::Rect rectBase   = layoutRes->GetRect( "slider_base_00" );
    nw::ut::Rect rectHandle = layoutRes->GetRect( "slider_Bounding" );
    m_HandlePane            = layoutRes->GetPane( "slider_handle_00" );

    m_Collision.SetRect( rectHandle );

    m_Layout->SetPosition( x, y );

    // コリジョンの矩形を決定します。
    m_Collision.SetXY(  SM_LOWER_SCREEN_HALF_SIZE_W + x - m_Collision.GetWidth()/2.f, 
                        SM_LOWER_SCREEN_HALF_SIZE_H + y - m_Collision.GetHeight()/2.f );

    // ハンドルの上限下限値を求めます。
    m_RangeMinY = SM_LOWER_SCREEN_HALF_SIZE_H + y - rectBase.GetHeight()/2.f;
    m_RangeMaxY = SM_LOWER_SCREEN_HALF_SIZE_H + y + rectBase.GetHeight()/2.f;


    // パラメータを初期化し、ハンドルとコリジョンを更新します。
    m_Param = 0.0f;
    SetParam( m_Param );
}


//----------------------------------------
// デストラクタ
SmLytSliderBar::~SmLytSliderBar()
{

}


//----------------------------------------
// 描画
void SmLytSliderBar::Render()
{
    return;
}


//----------------------------------------
// パラメータ値をセットする
void SmLytSliderBar::SetParam( f32 param )
{
     if ( param < 0.0f ) return;
     if ( param > 1.0f ) return;

    s32 posY = ( m_RangeMaxY - m_RangeMinY ) * param + m_RangeMinY;

    // ハンドルの表示位置を更新
    m_Layout->SetPanePosition( m_HandlePane, 0.f, SM_LOWER_SCREEN_HALF_SIZE_H - posY + m_BaseY );

    // コリジョンを更新
    m_Collision.SetXY( m_Collision.GetX(), posY - m_Collision.GetHeight()/2.f );

    // todo
    m_Param = param;
}


//----------------------------------------
// メッセージ受信
bool SmLytSliderBar::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 );

         if ( m_Collision.CheckInner( touchPanelStaus->GetX(), touchPanelStaus->GetY() ) )
        {
             if ( !touchPanelStaus->IsGrab() )
            {
                touchPanelStaus->Grab();
                m_IsGrab = true;
            }
        }
        break;

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

         if ( m_IsGrab )
        {
            touchPanelStaus->UnGrab();
            m_IsGrab = false;
        }
        break;


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

         if ( m_IsGrab )
        {
            // オフセットを求める
            s32 currentY = touchPanelStaus->GetY();

            // 制限
             if ( currentY < m_RangeMinY )    currentY = m_RangeMinY;
             if ( m_RangeMaxY < currentY )    currentY = m_RangeMaxY;

            // パラメータを計算しセットします。
            m_Param = static_cast<f32>( currentY - m_RangeMinY );
            m_Param /= static_cast<f32>( m_RangeMaxY - m_RangeMinY );
            SetParam( m_Param );

            // ターゲットに更新メッセージを送信します。
             if ( m_Target )
            {
                m_Target->SendMessage( SM_MESSAGE_UPDATE_PARAM, NULL, m_Id );
            }
        }
        break;

    }

    return 0;
}

} // namespace