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JPEGsnoopViewImg.cpp
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JPEGsnoopViewImg.cpp
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// JPEGsnoop - JPEG Image Decoder & Analysis Utility
// Copyright (C) 2017 - Calvin Hass
// http://www.impulseadventure.com/photo/jpeg-snoop.html
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
//
// JPEGsnoopViewImg.cpp : implementation file
//
#include "stdafx.h"
#include "JPEGsnoop.h"
#include "JPEGsnoopDoc.h"
#include "JPEGsnoopViewImg.h"
// CJPEGsnoopViewImg
IMPLEMENT_DYNCREATE(CJPEGsnoopViewImg, CScrollView)
CJPEGsnoopViewImg::CJPEGsnoopViewImg()
{
//_CrtSetDbgFlag( _CRTDBG_ALLOC_MEM_DF | _CRTDBG_LEAK_CHECK_DF); //CAL!
CWindowDC dc(NULL);
// Create main log font
memset(&m_logfont, 0, sizeof(m_logfont));
m_nPointSize = 120;
//_tcscpy(m_logfont.lfFaceName,_T("Courier New"));
_tcscpy_s(m_logfont.lfFaceName,_T("Arial"));
m_logfont.lfHeight = ::MulDiv(m_nPointSize,
dc.GetDeviceCaps(LOGPIXELSY),720);
m_logfont.lfPitchAndFamily = FIXED_PITCH;
m_pFont = new CFont;
m_pFont->CreateFontIndirect(&m_logfont);
}
CJPEGsnoopViewImg::~CJPEGsnoopViewImg()
{
if (m_pFont != NULL)
{
delete m_pFont;
}
}
BEGIN_MESSAGE_MAP(CJPEGsnoopViewImg, CScrollView)
ON_WM_LBUTTONDOWN()
ON_WM_LBUTTONUP()
ON_WM_RBUTTONUP()
ON_WM_MOUSEWHEEL()
ON_WM_MOUSEMOVE()
ON_WM_ERASEBKGND()
END_MESSAGE_MAP()
CJPEGsnoopCore* CJPEGsnoopViewImg::GetCore()
{
CJPEGsnoopDoc* pDoc = (CJPEGsnoopDoc*)GetDocument();
ASSERT_VALID(pDoc);
if (!pDoc)
return NULL;
// TODO: add draw code for native data here
CJPEGsnoopCore* pCore = pDoc->m_pCore;
return pCore;
}
// CJPEGsnoopViewImg drawing
void CJPEGsnoopViewImg::OnInitialUpdate()
{
CScrollView::OnInitialUpdate();
CJPEGsnoopDoc* pDoc = (CJPEGsnoopDoc*)GetDocument();
ASSERT_VALID(pDoc);
CSize sizeTotal(0,0);
sizeTotal.cx = 500; // FIXME:
sizeTotal.cy = 200; // FIXME:
SetScrollSizes(MM_TEXT, sizeTotal);
}
void CJPEGsnoopViewImg::OnDraw(CDC* pDC)
{
CJPEGsnoopDoc* pDoc = (CJPEGsnoopDoc*)GetDocument();
ASSERT_VALID(pDoc);
if (!pDoc)
return;
// TODO: add draw code for native data here
CJPEGsnoopCore* pCore = GetCore();
if (!pCore)
return;
CPoint ScrolledPos = GetScrollPosition();
CRect rectClient;
CSize szNewScrollSize;
GetClientRect(&rectClient);
pCore->I_ViewOnDraw(pDC,rectClient,ScrolledPos,m_pFont,szNewScrollSize);
SetScrollSizes(MM_TEXT, szNewScrollSize);
}
// CJPEGsnoopViewImg diagnostics
#ifdef _DEBUG
void CJPEGsnoopViewImg::AssertValid() const
{
CScrollView::AssertValid();
}
void CJPEGsnoopViewImg::Dump(CDumpContext& dc) const
{
CScrollView::Dump(dc);
}
#endif //_DEBUG
// CJPEGsnoopViewImg message handlers
// FIXME: Migrate into ImgDec!
bool CJPEGsnoopViewImg::InPreviewArea(CPoint point,CPoint &ptPix)
{
int pix_x;
int pix_y;
float fZoom;
unsigned nImgPosX;
unsigned nImgPosY;
unsigned nPixX; // 8x8 block number (not MCU unless CSS=1x1)
unsigned nPixY;
CJPEGsnoopCore* pCore = GetCore();
fZoom = pCore->I_GetPreviewZoom();
pCore->I_GetPreviewPos(nImgPosX,nImgPosY);
ASSERT(fZoom != 0);
CPoint ScrolledPos = GetScrollPosition();
CString strTmp;
pix_x = point.x;
pix_y = point.y;
pix_x -= (nImgPosX - ScrolledPos.x);
pix_y -= (nImgPosY - ScrolledPos.y);
ptPix.x = 0;
ptPix.y = 0;
// Is the preview even displayed?
//if (!GetImgDec()->m_bDibTempReady) {
// return false;
//}
// FIXME
// Note that m_nPreviewSize already includes effects of zoom level
unsigned nPreviewSzX,nPreviewSzY;
pCore->I_GetPreviewSize(nPreviewSzX,nPreviewSzY);
if ( ((pix_x >= 0) && ((unsigned)pix_x < nPreviewSzX)) &&
((pix_y >= 0) && ((unsigned)pix_y < nPreviewSzY)) )
{
// Undo zoom
nPixX = (unsigned)(pix_x / fZoom);
nPixY = (unsigned)(pix_y / fZoom);
ptPix.x = nPixX;
ptPix.y = nPixY;
return true;
}
return false;
}
// The following routine was intended to automatically recenter the image
// TODO: However, what is the best way to have it called during redraw?
// Currently not used
void CJPEGsnoopViewImg::SetScrollCenter(float fZoomOld, float fZoomNew)
{
unsigned nImgPosX;
unsigned nImgPosY;
ASSERT(fZoomOld != 0);
ASSERT(fZoomNew != 0);
GetCore()->I_GetPreviewPos(nImgPosX,nImgPosY);
CPoint ScrolledPos = GetScrollPosition();
ScrolledPos.Offset(-(int)nImgPosX,-(int)nImgPosY);
ScrolledPos.x = (long)(ScrolledPos.x * fZoomNew / fZoomOld);
ScrolledPos.y = (long)(ScrolledPos.y * fZoomNew / fZoomOld);
ScrolledPos.Offset(+nImgPosX,+nImgPosY);
ScrollToPosition(ScrolledPos);
}
int CJPEGsnoopViewImg::MeasureFontHeight(CFont* pFont, CDC* pDC)
{
// how tall is the identified font in the identified DC?
CFont* pOldFont;
pOldFont = pDC->SelectObject(pFont);
CRect rectDummy;
CString strRender = _T("1234567890ABCDEF- abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ[]");
int nHeight = pDC->DrawText(strRender, -1, rectDummy,
DT_TOP | DT_SINGLELINE | DT_CALCRECT);
pDC->SelectObject(pOldFont);
return nHeight;
}
void CJPEGsnoopViewImg::OnLButtonDown(UINT nFlags, CPoint point)
{
// TODO: Add your message handler code here and/or call default
//AfxMessageBox(_T("LButtonDown!"));
CScrollView::OnLButtonDown(nFlags, point);
}
void CJPEGsnoopViewImg::OnLButtonUp(UINT nFlags, CPoint point)
{
CString strTmp;
CPoint ptPix;
CPoint ptMcu;
CPoint ptBlk;
// Need to ensure that the Preview image was based on a JPEG with
// MCU/Block map info
//if (InPreviewArea(point,ptPix)) {
if ( (GetCore()->I_IsPreviewReady() && InPreviewArea(point,ptPix)) ) {
// Set the marker
ptBlk = GetCore()->I_PixelToBlk(ptPix);
GetCore()->I_SetMarkerBlk(ptBlk.x,ptBlk.y);
//Invalidate();
} else {
GetCore()->I_SetStatusText(_T(""));
}
CScrollView::OnLButtonUp(nFlags, point);
}
void CJPEGsnoopViewImg::OnRButtonUp(UINT nFlags, CPoint point)
{
CScrollView::OnLButtonUp(nFlags, point);
}
BOOL CJPEGsnoopViewImg::OnMouseWheel(UINT nFlags, short zDelta, CPoint pt)
{
// TODO: Add your message handler code here and/or call default
CPoint ScrolledPos = GetScrollPosition();
ScrolledPos.Offset(0,-zDelta);
ScrollToPosition(ScrolledPos);
// Want to update the status text
OnMouseMove(0,pt);
return CScrollView::OnMouseWheel(nFlags, zDelta, pt);
}
void CJPEGsnoopViewImg::OnMouseMove(UINT nFlags, CPoint point)
{
CString strTmp;
unsigned nByte;
unsigned nBit;
CPoint ptPix;
CPoint ptMcu;
CPoint ptBlk;
int nY1,nCb1,nCr1;
// FIXME: Migrate the following into ImgDec!
// Need to ensure that the Preview image was based on a JPEG with
// MCU/Block map info
if ( (GetCore()->I_IsPreviewReady() && InPreviewArea(point,ptPix)) ) {
ptMcu = GetCore()->I_PixelToMcu(ptPix);
GetCore()->I_LookupFilePosMcu(ptMcu.x,ptMcu.y,nByte,nBit);
ptBlk = GetCore()->I_PixelToBlk(ptPix);
GetCore()->I_LookupBlkYCC(ptBlk.x,ptBlk.y,nY1,nCb1,nCr1);
/*
strTmp.Format(_T("MCU [%04u,%04u] File: 0x%08X:%u\tYCC=[%05d,%05d,%05d]"),
ptMcu.x,ptMcu.y,nByte,nBit,
nY1,nCb1,nCr1);
GetCore()->I_SetStatusText(strTmp);
*/
strTmp.Format(_T("MCU [%04u,%04u]"),ptMcu.x,ptMcu.y);
GetCore()->I_SetStatusMcuText(strTmp);
strTmp.Format(_T("File: 0x%08X:%u"),nByte,nBit);
GetCore()->I_SetStatusFilePosText(strTmp);
strTmp.Format(_T("YCC DC=[%05d,%05d,%05d]"),nY1,nCb1,nCr1);
GetCore()->I_SetStatusYccText(strTmp);
} else {
// GetCore()->I_SetStatusText(_T(""));
GetCore()->I_SetStatusMcuText(_T(""));
GetCore()->I_SetStatusFilePosText(_T(""));
GetCore()->I_SetStatusYccText(_T(""));
}
CScrollView::OnMouseMove(nFlags, point);
}
BOOL CJPEGsnoopViewImg::OnEraseBkgnd(CDC* pDC)
{
// TODO: Add your message handler code here and/or call default
// FIXME:
// Apparently this could help remove flicker! But it is disabled for now.
//return 1;
return CScrollView::OnEraseBkgnd(pDC);
}