// ***********************************************************************************
//
// BmpDlg.cpp : implementation file
//
// ************************************************************************************
#include "stdafx.h"
#include "BmpDlg.h"
//Download by http://www.codefans.net
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
// In order to ease use, these values have been hard coded in bmpdlg.rc
// This avoids the need for another header file.
#define IDC_PREVIEW (5000)
#define IDC_PREVIEWBTN (5001)
#define IDC_WIDTH (5002)
#define IDC_HEIGHT (5003)
#define IDC_DEPTH (5004)
#define IDC_FSIZE (5005)
#define IDC_SHOWPREVIEW (5006)
HBITMAP CBmpDialog::hpreview = NULL;
BOOL CBmpDialog::m_showpreview = TRUE;
// Proprietary Hook function for open dialog
UINT APIENTRY OFNHookProc( HWND hdlg, UINT uiMsg, WPARAM wParam, LPARAM lParam )
{
LPDRAWITEMSTRUCT lpdis;
BITMAP bm;
LPNMHDR pnmh;
char filename[1024],str[255];
int height,height2,width,width2;
NMHDR nmh;
switch (uiMsg)
{
case WM_COMMAND:
if (LOWORD(wParam) == IDC_SHOWPREVIEW)
{
CBmpDialog::m_showpreview = IsDlgButtonChecked(hdlg,IDC_SHOWPREVIEW);
if (!CBmpDialog::m_showpreview)
{
if (CBmpDialog::hpreview)
DeleteObject(CBmpDialog::hpreview);
CBmpDialog::hpreview = NULL;
HWND wnd = GetDlgItem(hdlg,IDC_PREVIEWBTN);
InvalidateRect(wnd,NULL,TRUE);
SetDlgItemText(hdlg,IDC_WIDTH,"");
SetDlgItemText(hdlg,IDC_HEIGHT,"");
SetDlgItemText(hdlg,IDC_DEPTH,"");
SetDlgItemText(hdlg,IDC_FSIZE,"");
}
else
{
nmh.code = CDN_SELCHANGE;
OFNHookProc(hdlg, WM_NOTIFY, 0, (LPARAM)&nmh);
}
}
break;
case WM_DRAWITEM:
if (CBmpDialog::hpreview)
{
lpdis = (LPDRAWITEMSTRUCT)lParam;
GetObject(CBmpDialog::hpreview,sizeof(BITMAP),&bm);
CPoint size(bm.bmWidth,bm.bmHeight);
HDC dcmem = CreateCompatibleDC(lpdis->hDC);
HBITMAP old = (HBITMAP)SelectObject(dcmem,CBmpDialog::hpreview);
if (bm.bmWidth > bm.bmHeight)
{
height = lpdis->rcItem.bottom - lpdis->rcItem.top;
float ratio = (float)bm.bmHeight/(float)bm.bmWidth;
lpdis->rcItem.bottom = (long) (lpdis->rcItem.top + (lpdis->rcItem.right-lpdis->rcItem.left)*ratio);
height2 = (height - (lpdis->rcItem.bottom - lpdis->rcItem.top))/2;
lpdis->rcItem.top += height2;
lpdis->rcItem.bottom += height2;
}
else
{
width = lpdis->rcItem.right - lpdis->rcItem.left;
float ratio = (float)bm.bmWidth/(float)bm.bmHeight;
lpdis->rcItem.right = (long) (lpdis->rcItem.left + (lpdis->rcItem.bottom-lpdis->rcItem.top)*ratio);
width2 = (width - (lpdis->rcItem.right - lpdis->rcItem.left))/2;
lpdis->rcItem.left += width2;
lpdis->rcItem.right += width2;
}
StretchBlt(lpdis->hDC,lpdis->rcItem.left,lpdis->rcItem.top,lpdis->rcItem.right-lpdis->rcItem.left,lpdis->rcItem.bottom-lpdis->rcItem.top,dcmem,0,0,bm.bmWidth,bm.bmHeight,SRCCOPY);
SelectObject(dcmem,old);
DeleteDC(dcmem);
}
break;
case WM_NOTIFY:
pnmh = (LPNMHDR) lParam;
if (pnmh->code == CDN_FILEOK)
{
if (CBmpDialog::hpreview)
DeleteObject(CBmpDialog::hpreview);
// This avoids an assert
_AFX_THREAD_STATE* pThreadState = AfxGetThreadState();
pThreadState->m_pAlternateWndInit = NULL;
return 0;
}
if (pnmh->code == CDN_INITDONE)
{
if (CBmpDialog::hpreview)
DeleteObject(CBmpDialog::hpreview);
CheckDlgButton(hdlg,IDC_SHOWPREVIEW,CBmpDialog::m_showpreview);
return 0;
}
if (pnmh->code == CDN_SELCHANGE)
{
if (!IsDlgButtonChecked(hdlg,IDC_SHOWPREVIEW))
{
if (CBmpDialog::hpreview)
DeleteObject(CBmpDialog::hpreview);
CBmpDialog::hpreview = NULL;
return 0;
}
SendMessage(GetParent(hdlg),CDM_GETFILEPATH ,1024,(LPARAM)filename);
if (CBmpDialog::hpreview)
DeleteObject(CBmpDialog::hpreview);
CBmpDialog::hpreview = (HBITMAP)LoadImage(AfxGetInstanceHandle(),filename,IMAGE_BITMAP,0,0,LR_LOADFROMFILE|LR_CREATEDIBSECTION);
HWND wnd = GetDlgItem(hdlg,IDC_PREVIEWBTN);
InvalidateRect(wnd,NULL,TRUE);
if (CBmpDialog::hpreview)
{
GetObject(CBmpDialog::hpreview,sizeof(BITMAP),&bm);
wsprintf(str,"Width: %d pixels",bm.bmWidth);
SetDlgItemText(hdlg,IDC_WIDTH,str);
wsprintf(str,"Height: %d pixels",bm.bmHeight);
SetDlgItemText(hdlg,IDC_HEIGHT,str);
switch (bm.bmBitsPixel)
{
case 1:
SetDlgItemText(hdlg,IDC_DEPTH,"Colors: 2 (monocromatic)");
break;
case 4:
SetDlgItemText(hdlg,IDC_DEPTH,"Colors: 16");
break;
case 8:
SetDlgItemText(hdlg,IDC_DEPTH,"Colors: 256");
break;
case 16:
SetDlgItemText(hdlg,IDC_DEPTH,"Colors: 65,536");
break;
case 24:
SetDlgItemText(hdlg,IDC_DEPTH,"Colors: 16 millions");
break;
default:
SetDlgItemText(hdlg,IDC_DEPTH,"");
}
OFSTRUCT o;
HFILE f = OpenFile(filename,&o,OF_READ);
wsprintf(str,"Size: %ld Kb",GetFileSize((HANDLE)f,NULL)/1024);
SetDlgItemText(hdlg,IDC_FSIZE,str);
_lclose(f);
}
else
{
SetDlgItemText(hdlg,IDC_WIDTH,"");
SetDlgItemText(hdlg,IDC_HEIGHT,"");
SetDlgItemText(hdlg,IDC_DEPTH,"");
SetDlgItemText(hdlg,IDC_FSIZE,"");
}
}
}
return 0;
}
/////////////////////////////////////////////////////////////////////////////
// CBmpDialog
IMPLEMENT_DYNAMIC(CBmpDialog, CFileDialog
