/*
	Copyright (C) 2012, Moca

	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 "CAutoScrollWnd.h"
#include "view/CEditView.h"
#include "sakura_rc.h"

CAutoScrollWnd::CAutoScrollWnd()
: CWnd(_T("::CAutoScrollWnd"))
{
	m_hCenterImg = NULL;
	return;
}


CAutoScrollWnd::~CAutoScrollWnd()
{
}



HWND CAutoScrollWnd::Create( HINSTANCE hInstance, HWND hwndParent, bool bVertical, bool bHorizontal, const CMyPoint& point, CEditView* view )
{
	LPCTSTR pszClassName;

	m_cView = view;
	int idb, idc;
	if( bVertical ){
		if( bHorizontal ){
			idb = IDB_SCROLL_CENTER;
			idc = IDC_CURSOR_AUTOSCROLL_CENTER;
			pszClassName = _T("SakuraAutoScrollCWnd");
		}else{
			idb = IDB_SCROLL_VERTICAL;
			idc = IDC_CURSOR_AUTOSCROLL_VERTICAL;
			pszClassName = _T("SakuraAutoScrollVWnd");
		}
	}else{
		idb = IDB_SCROLL_HORIZONTAL;
		idc = IDC_CURSOR_AUTOSCROLL_HORIZONTAL;
		pszClassName = _T("SakuraAutoScrollHWnd");
	}
	m_hCenterImg = (HBITMAP)::LoadImage(hInstance, MAKEINTRESOURCE(idb), IMAGE_BITMAP, 0, 0, LR_CREATEDIBSECTION);
	HCURSOR hCursor = ::LoadCursor(GetModuleHandle(NULL), MAKEINTRESOURCE(idc));

	/* ウィンドウクラス作成 */
	RegisterWC(
		hInstance,
		NULL,
		NULL,
		hCursor,
		(HBRUSH)(COLOR_3DFACE + 1),
		NULL,
		pszClassName
	);

	/* 基底クラスメンバ呼び出し */
	return CWnd::Create(
		/* 初期化 */
		hwndParent,
		0,
		pszClassName,	// Pointer to a null-terminated string or is an atom.
		pszClassName, // pointer to window name
		WS_CHILD | WS_VISIBLE, // window style
		point.x-16, // horizontal position of window
		point.y-16, // vertical position of window
		32, // window width
		32, // window height
		NULL // handle to menu, or child-window identifier
	);
}

void CAutoScrollWnd::Close()
{
	this->DestroyWindow();

	if( m_hCenterImg ){
		::DeleteObject( m_hCenterImg );
		m_hCenterImg = NULL;
	}
}

LRESULT CAutoScrollWnd::OnLButtonDown( HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam )
{
	if( m_cView->m_nAutoScrollMode ){
		m_cView->AutoScrollExit();
	}
	return 0;
}

LRESULT CAutoScrollWnd::OnRButtonDown( HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam )
{
	if( m_cView->m_nAutoScrollMode ){
		m_cView->AutoScrollExit();
	}
	return 0;
}

LRESULT CAutoScrollWnd::OnMButtonDown( HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam )
{
	if( m_cView->m_nAutoScrollMode ){
		m_cView->AutoScrollExit();
	}
	return 0;
}


LRESULT CAutoScrollWnd::OnPaint( HWND hwnd, UINT, WPARAM, LPARAM )
{
	PAINTSTRUCT ps;
	HDC hdc = ::BeginPaint( hwnd, &ps );
	HDC hdcBmp = ::CreateCompatibleDC( hdc );
	HBITMAP hBbmpOld = (HBITMAP)::SelectObject( hdcBmp, m_hCenterImg );
	::BitBlt( hdc, 0, 0, 32, 32, hdcBmp, 0, 0, SRCCOPY );
	::SelectObject( hdcBmp, hBbmpOld );
	::DeleteObject( hdcBmp );
	::EndPaint(hwnd, &ps);
	return 0;
}