// ScaleRollupDlg.cpp : implementation file
//
#include "stdafx.h"
#include "dibmanager.h"
#include "mainfrm.h"
#include "ScaleRollupDlg.h"
#include <math.h>
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
/////////////////////////////////////////////////////////////////////////////
// CScaleRollupDlg dialog
CScaleRollupDlg::CScaleRollupDlg(CWnd* pParent /*=NULL*/)
: COXRollup(CScaleRollupDlg::IDD, pParent)
{
//{{AFX_DATA_INIT(CScaleRollupDlg)
m_nScaledHeight = 0;
m_nScaledWidth = 0;
m_nZoomLevel = 0;
//}}AFX_DATA_INIT
m_nOrigHeight=0;
m_nOrigWidth=0;
}
void CScaleRollupDlg::DoDataExchange(CDataExchange* pDX)
{
COXRollup::DoDataExchange(pDX);
//{{AFX_DATA_MAP(CScaleRollupDlg)
DDX_Control(pDX, IDC_ZOOM_LEVEL, m_ctlZoomLevel);
DDX_Control(pDX, IDC_SPIN_ZOOM_LEVEL, m_ctlSpinZoom);
DDX_Control(pDX, IDC_PICTURE, m_ctlPicture);
DDX_Text(pDX, IDC_SCALED_HEIGHT, m_nScaledHeight);
DDX_Text(pDX, IDC_SCALED_WIDTH, m_nScaledWidth);
DDX_Text(pDX, IDC_ZOOM_LEVEL, m_nZoomLevel);
//}}AFX_DATA_MAP
}
BEGIN_MESSAGE_MAP(CScaleRollupDlg, COXRollup)
//{{AFX_MSG_MAP(CScaleRollupDlg)
ON_BN_CLICKED(IDC_BUTTON_APPLY, OnButtonApply)
ON_EN_CHANGE(IDC_ZOOM_LEVEL, OnChangeZoomLevel)
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CScaleRollupDlg message handlers
void CScaleRollupDlg::OnButtonApply()
{
// TODO: Add your control notification handler code here
if(m_nZoomLevel<ID_MIN_ZOOM_LEVEL)
{
m_nZoomLevel=ID_MIN_ZOOM_LEVEL;
UpdateData(FALSE);
}
// notify current recipient window
// that we have to change zoom level
RUpdateData(TRUE);
Send2MR(ID_APPLY);
ShowControls();
}
void CScaleRollupDlg::OnChangeZoomLevel()
{
// TODO: If this is a RICHEDIT control, the control will not
// send this notification unless you override the CDialog::OnInitDialog()
// function to send the EM_SETEVENTMASK message to the control
// with the ENM_CHANGE flag ORed into the lParam mask.
// TODO: Add your control notification handler code here
UpdateData(TRUE);
ShowControls();
}
BOOL CScaleRollupDlg::OnInitDialog()
{
COXRollup::OnInitDialog();
// TODO: Add extra initialization here
// Set the COXSpinCtrl object, which is mapped to a common Spin Control.
m_ctlSpinZoom.SetBuddy(&m_ctlZoomLevel);
m_ctlSpinZoom.SetRange(ID_MIN_ZOOM_LEVEL,ID_MAX_ZOOM_LEVEL);
m_ctlSpinZoom.SetPos(m_nZoomLevel);
// Set a default COXSpinCtrl method of delta value computation (Delta pixel = Delta value).
m_ctlSpinZoom.SetComputationMethod(OX_SPIN_DELTA_PIXEL_IS_DELTA_VALUE);
UpdateData(FALSE);
ShowControls();
return TRUE; // return TRUE unless you set the focus to a control
// EXCEPTION: OCX Property Pages should return FALSE
}
void CScaleRollupDlg::ShowControls()
{
if(m_nZoomLevel>ID_MAX_ZOOM_LEVEL)
m_nZoomLevel=ID_MAX_ZOOM_LEVEL;
CRect rectPicture, rectNewPicture;
CPoint ptPictureCenter;
m_nScaledWidth=((long)m_nOrigWidth*(long)m_nZoomLevel)/(100L);
m_nScaledHeight=((long)m_nOrigHeight*(long)m_nZoomLevel)/(100L);
m_ctlPicture.GetWindowRect(&rectPicture);
ScreenToClient(&rectPicture);
ptPictureCenter.x=rectPicture.left+rectPicture.Width()/2;
ptPictureCenter.y=rectPicture.top+rectPicture.Height()/2;
// we chose this formula because it let the picture control
// to go from 10% to 1000%
int nPictureWidth=(3*(int)sqrt((float)m_nZoomLevel)-(int)sqrt((float)m_nZoomLevel)/2)*2;
rectNewPicture.left=ptPictureCenter.x-nPictureWidth/2;
rectNewPicture.top=ptPictureCenter.y-nPictureWidth/2;
rectNewPicture.right=rectNewPicture.left+nPictureWidth;
rectNewPicture.bottom=rectNewPicture.top+nPictureWidth;
if(rectNewPicture.left-rectPicture.left!=0)
{
m_ctlPicture.MoveWindow(rectNewPicture.left, rectNewPicture.top,
rectNewPicture.Width(), rectNewPicture.Height());
}
UpdateData(FALSE);
}
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