// ThresholdDlg.cpp : 實現文件
//

#include "stdafx.h"
#include "photoshow.h"
#include "ThresholdDlg.h"
#include "GrayOperator.h"
#include "MainFrm.h"
#include "photoshowDoc.h"
#include "photoshowView.h"


// CThresholdDlg 對話框

IMPLEMENT_DYNAMIC(CThresholdDlg, CDialog)

CThresholdDlg::CThresholdDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CThresholdDlg::IDD, pParent)
	, m_nNum(120)
	, m_nPos(0)
{
	m_bModify = false;
}

CThresholdDlg::~CThresholdDlg()
{
	SAFE_DELETE (dlg);
}

void CThresholdDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	DDX_Control(pDX, IDC_SLIDER, m_SliderNum);
	DDX_Text(pDX, IDC_NUM, m_nNum);
	DDX_Slider(pDX, IDC_SLIDER, m_nPos);
}


BEGIN_MESSAGE_MAP(CThresholdDlg, CDialog)
	ON_EN_CHANGE(IDC_NUM, &CThresholdDlg::OnEnChangeNum)
	ON_BN_CLICKED(IDC_SAVE, &CThresholdDlg::OnBnClickedSave)
	ON_WM_HSCROLL()
	ON_BN_CLICKED(IDCANCEL, &CThresholdDlg::OnBnClickedCancel)
END_MESSAGE_MAP()


// CThresholdDlg 消息處理程序

void CThresholdDlg::Refresh(void)
{
	UpdateData(TRUE);

	CMainFrame* pMain = (CMainFrame*)AfxGetMainWnd();
	CphotoshowView* pView = (CphotoshowView*)pMain->GetActiveView();

	ThresholdTrans(pView->m_pImageBuffer, pView->m_pImageTempBuffer, 
				   pView->m_nPicWidth, pView->m_nPicHeight, m_nNum);

	dlg->Refresh();
}

BOOL CThresholdDlg::OnInitDialog()
{
	CDialog::OnInitDialog();

	dlg = new CPreviewDlg(this);

	dlg->m_nType = 1;
	dlg->m_bEnableClose = false;
	dlg->Create(IDD_PREVIEW);
	dlg->ShowWindow(SW_SHOW);

	m_SliderNum.SetRange(0, 255);
	m_nPos = 120;
	UpdateData(FALSE);

	Refresh();

	return TRUE;  // return TRUE unless you set the focus to a control
	// 異常: OCX 屬性頁應返回 FALSE
}

void CThresholdDlg::OnEnChangeNum()
{
	UpdateData(TRUE);

	if (m_nNum < 0)
		m_nNum = 0;
	else if (m_nNum > 255)
		m_nNum = 255;

	m_nPos = m_nNum;
	UpdateData(FALSE);
	Refresh();
	m_bModify = true;
}

void CThresholdDlg::OnBnClickedSave()
{
	CMainFrame* pMain = (CMainFrame*)AfxGetMainWnd();
	CphotoshowView* pView = (CphotoshowView*)pMain->GetActiveView();

	pView->OnFileSave();
	m_bModify = false;
}


void CThresholdDlg::OnHScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar)
{
	UpdateData(TRUE);

	m_nNum = m_nPos;

	UpdateData(FALSE);
	Refresh();
	m_bModify = true;

	CDialog::OnHScroll(nSBCode, nPos, pScrollBar);
}

void CThresholdDlg::OnBnClickedCancel()
{
	if (m_bModify)
	{
		if (IDYES == MessageBox(L"圖像已經更改，是否保存？", L"photoshow", MB_YESNO))
			OnBnClickedSave();
	}
	OnCancel();
}