/*
UndoPush()
*/
BOOL CWallBrowserStretchView::UndoPush(int nID)
{
BOOL bUndo = FALSE;
if(++m_nUndoLevel <= MAX_STACK_SIZE)
{
// salva il contenuto dell'immagine nello stack per l'undo
CWallBrowserDoc* pDoc = (CWallBrowserDoc*)GetDocument();
if(pDoc)
{
CImage *pImage = pDoc->GetImage();
if(pImage && pImage->GetWidth() > 0 && pImage->GetHeight() > 0)
{
CImage* pImg;
CImageFactory* pImgFactory = new CImageFactory();
char szLibraryName[_MAX_PATH+1];
strcpy(szLibraryName,pImage->GetLibraryName());
pImg = pImgFactory->Create(szLibraryName,sizeof(szLibraryName));
DIBINFO DibInfo;
DibInfo.nPerspective = 0;
HDIB hDib = pImage->GetDIB(&DibInfo);
if(hDib)
{
pImg->SetDIB(hDib,&DibInfo);
::GlobalFree(hDib);
UNDOINFO* undoinfo = new UNDOINFO;
undoinfo->pImageFactory = pImgFactory;
undoinfo->DibInfo.nPerspective = DibInfo.nPerspective;
undoinfo->nRedo = nID;
int nLevel = m_UndoInfo.Push(undoinfo);
if(nLevel!=-1)
bUndo = TRUE;
}
else
{
delete pImgFactory;
}
}
}
}
else
m_nUndoLevel--;
CWnd* pWnd = AfxGetMainWnd();
if(pWnd)
{
pWnd->SendMessage(WM_EDIT_UNDO,UndoEnabled(),0L);
pWnd->SendMessage(WM_EDIT_REDO,FALSE,0L);
}
return(bUndo);
}
/*
OnDraw()
*/
void CWallBrowserStretchView::OnDraw(CDC* pDC)
{
// documento
CWallBrowserDoc* pDoc = (CWallBrowserDoc*)GetDocument();
if(!pDoc)
return;
// nome file
memset(m_szFileName,'\0',sizeof(m_szFileName));
strcpyn(m_szFileName,pDoc->GetFileName(),sizeof(m_szFileName));
if(m_szFileName[0]=='\0')
return;
// immagine
CImage *pImage = pDoc->GetImage();
if(pImage && pImage->GetWidth() > 0 && pImage->GetHeight() > 0)
m_ImageDraw.SetImage(pImage);
else
return;
// immagine valida
if(!pDoc->GetPictureFlag())
return;
// dimensione corrente della vista
GetClientRect(&m_rcClient);
// adatta l'immagine alla dimensione corrente della vista
double nRemains = 0.0;
double nWidth = (double)pImage->GetWidth();
double nHeight = (double)pImage->GetHeight();
if(nHeight > (double)m_rcClient.bottom)
{
nRemains = FDIV(nHeight,(double)m_rcClient.bottom);
if(nRemains > 0.0)
{
nHeight = FDIV(nHeight,nRemains);
nWidth = FDIV(nWidth,nRemains);
}
}
if(nWidth > (double)m_rcClient.right)
{
nRemains = FDIV(nWidth,(double)m_rcClient.right);
if(nRemains > 0.0)
{
nHeight = FDIV(nHeight,nRemains);
nWidth = FDIV(nWidth,nRemains);
}
}
m_rcInvalid.SetRect(0,0,(int)nWidth,(int)nHeight);
// nome del file
if(m_pMainFrameStatusBar)
{
strcpyn(m_szStatus,pDoc->GetFileName(),sizeof(m_szStatus));
m_pMainFrameStatusBar->SetPaneText(ID_INDICATOR_FILENAME_ID,m_szStatus);
}
double nFactor = 0.0;
char szFactor[8] = {0};
if(m_nViewType==VIEWTYPE_SCROLL)
{
nFactor = GetZoomRatio();
if(nFactor >= 1.0)
sprintf(szFactor,"%.2f:1",nFactor);
else
sprintf(szFactor,"1:%.2f",1/nFactor);
}
// fattore di zoom e % di visualizzazione dell'immagine nella vista
int nRatio = (int)((nWidth * 100.0)/pImage->GetWidth());
if(m_pMainFrameStatusBar)
{
m_pMainFrameStatusBar->SetPaneText(ID_INDICATOR_ZOOM_ID,szFactor);
if(m_nViewType==VIEWTYPE_STRETCH)
_snprintf(m_szStatus,sizeof(m_szStatus)-1,"%d%% (stretch)",nRatio);
else
_snprintf(m_szStatus,sizeof(m_szStatus)-1,"%.1f%% (scroll)",nFactor * 100.0);
m_pMainFrameStatusBar->SetPaneText(ID_INDICATOR_RATIO_ID,m_szStatus);
}
// area della vista (client rect)
m_rcClient.right = (int)nWidth;
m_rcClient.bottom = (int)nHeight;
// ricava le informazioni per il titolo
char szTitle[_MAX_PATH+1] = {0};
int nColors = pImage->GetNumColors();
if(m_nViewType==VIEWTYPE_STRETCH)
_snprintf(szFactor,sizeof(szFactor)-1,"%d%%",nRatio);
_snprintf(szTitle,
sizeof(szTitle)-1,
"%s (%s) - %d x %d x %d%s",
pDoc->GetFileName(),
szFactor,
pImage->GetWidth(),
pImage->GetHeight(),
(nColors > 256 || nColors==0) ? 16 : nColors,
(nColors > 256 || nColors==0) ? "M" : ""
);
pDoc->SetTitle(szTitle);
// ricava le informazioni per la status bar
if(m_pMainFrameStatusBar)
{
int nColors = pImage->GetNumColors();
_snprintf(m_szStatus,
sizeof(m_szStatus)-1,
"%d x %d x %d%s colors, %d bpp",
pImage->GetWidth(),
pImage->GetHeight(),
(nColors > 256 || nColors==0) ? 16 : nColors,
(nColors > 256 || nColors==0) ? "M" : "",
pImage->GetBPP()
);
m_pMainFrameStatusBar->SetPaneText(ID_INDICATOR_INFO_ID,m_szStatus);
UINT nMemUsed = pImage->GetMemUsed();
if(nMemUsed < 1024L)
_snprintf(m_szStatus,sizeof(m_szStatus)-1,"%ld bytes",nMemUsed);
else if(nMemUsed < 1048576L)
_snprintf(m_szStatus,sizeof(m_szStatus)-1,"%0.1f KB",FDIV(((float)nMemUsed),1024.0f));
else
_snprintf(m_szStatus,sizeof(m_szStatus)-1,"%0.2f MB",FDIV(((float)nMemUsed),1048576.0f));
m_pMainFrameStatusBar->SetPaneText(ID_INDICATOR_MEM_ID,m_szStatus);
strcpyn(m_szStatus,pImage->GetLibraryName(),sizeof(m_szStatus));
m_pMainFrameStatusBar->SetPaneText(ID_INDICATOR_LIBRARY_ID,m_szStatus);
}
// area dell'immagine
CRect rcImg(0,0,pImage->GetWidth(),pImage->GetHeight());
// se per la vista deve usare lo scroll, imposta le aree in modo tale che vengano visualizzate le barre di scorrimento
if(m_nViewType==VIEWTYPE_SCROLL)
m_rcClient = rcImg;
// visualizza l'immagine scalata rispetto alla dimensione corrente della vista
m_ImageDraw.DrawEx(pDC->GetSafeHdc(),
&m_rcClient,
&rcImg,
NULL,
FALSE,
COLORONCOLOR,
m_nDrawMode,
SRCCOPY,
m_bRebuildPalette
);
m_bRebuildPalette = FALSE;
}