/*!	@file
	@brief UxTheme 動的ロード

	UxTheme (Windows thmeme manager) への動的アクセスクラス

	@author ryoji
	@date Apr. 1, 2007
*/
/*
	Copyright (C) 2007, ryoji

	This software is provided 'as-is', without any express or implied
	warranty. In no event will the authors be held liable for any damages
	arising from the use of this software.

	Permission is granted to anyone to use this software for any purpose, 
	including commercial applications, and to alter it and redistribute it 
	freely, subject to the following restrictions:

		1. The origin of this software must not be misrepresented;
		   you must not claim that you wrote the original software.
		   If you use this software in a product, an acknowledgment
		   in the product documentation would be appreciated but is
		   not required.

		2. Altered source versions must be plainly marked as such, 
		   and must not be misrepresented as being the original software.

		3. This notice may not be removed or altered from any source
		   distribution.
*/

#include "StdAfx.h"
#include "CUxTheme.h"

CUxTheme::CUxTheme()
 : m_bInitialized(false)
{
}

CUxTheme::~CUxTheme()
{
}


/*! DLL のロード

	一度しか LoadLibrary() 実行しないこと以外は CDllImp::Init() と同じ
	（UxTheme 未対応 OS での LoadLibrary() 失敗の繰返しを防ぐ）

	@author ryoji
	@date 2007.04.01 ryoji 新規
*/
bool CUxTheme::InitThemeDll( TCHAR* str )
{
	if( m_bInitialized )
		return IsAvailable();

	m_bInitialized = true;
	return DLL_SUCCESS == CDllImp::InitDll( str );
}

/*!
	UxTheme のファイル名を渡す
*/
LPCTSTR CUxTheme::GetDllNameImp(int nIndex)
{
	return _T("UxTheme.dll");
}

bool CUxTheme::InitDllImp()
{
	const ImportTable table[] = {
		{ &m_pfnIsThemeActive,							"IsThemeActive" },
		{ &m_pfnSetWindowTheme,							"SetWindowTheme" },
		{ &m_pfnOpenThemeData,							"OpenThemeData" },
		{ &m_pfnDrawThemeBackground,					"DrawThemeBackground" },
		{ &m_pfnDrawThemeParentBackground,				"DrawThemeParentBackground" },
		{ &m_pfnIsThemeBackgroundPartiallyTransparent,	"IsThemeBackgroundPartiallyTransparent" },
		{ NULL, 0 }
	};

	if( !RegisterEntries( table ) ){
		return false;
	}

	return true;
}

/*! IsThemeActive API Wrapper */
BOOL CUxTheme::IsThemeActive( VOID )
{
	if( !InitThemeDll() )
		return FALSE;
	return m_pfnIsThemeActive();
}

/*! SetWindowTheme API Wrapper */
HRESULT CUxTheme::SetWindowTheme( HWND hwnd, LPCWSTR pszSubAppName, LPCWSTR pszSubIdList )
{
	if( !InitThemeDll() )
		return S_FALSE;
	return m_pfnSetWindowTheme( hwnd, pszSubAppName, pszSubIdList );
}

/*! SetWindowTheme API Wrapper */
HTHEME CUxTheme::OpenThemeData( HWND hwnd, LPCWSTR pszClassList )
{
	if( !InitThemeDll() )
		return NULL;
	return (HTHEME)m_pfnOpenThemeData( hwnd, pszClassList );
}

/*! SetWindowTheme API Wrapper */
HRESULT CUxTheme::DrawThemeBackground( HTHEME htheme, HDC hdc, int iPartId, int iStateId, RECT* prc, RECT* prcClip )
{
	if( !InitThemeDll() )
		return S_FALSE;
	return m_pfnDrawThemeBackground( htheme, hdc, iPartId, iStateId, prc, prcClip );
}

/*! SetWindowTheme API Wrapper */
HRESULT CUxTheme::DrawThemeParentBackground( HWND hwnd, HDC hdc, RECT *prc )
{
	if( !InitThemeDll() )
		return S_FALSE;
	return m_pfnDrawThemeParentBackground( hwnd, hdc, prc );
}

/*! SetWindowTheme API Wrapper */
BOOL CUxTheme::IsThemeBackgroundPartiallyTransparent( HTHEME htheme, int iPartId, int iStateId )
{
	if( !InitThemeDll() )
		return FALSE;
	return m_pfnIsThemeBackgroundPartiallyTransparent( htheme, iPartId, iStateId );
}