C++ (Cpp) CDemoDoc::GetStretchMode Examples

Example #1

File: demoView.cpp Project: Aliceljm1/CxImageVS2010

//////////////////////////////////////////////////////////////////////////////
// CDemoView drawing
void CDemoView::OnDraw(CDC* pDC)
{
	CDemoDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);

	BOOL bPrinting = pDC->IsPrinting();

	CMemDC* pMemDC = NULL;
	if (!bPrinting) pDC = pMemDC = new CMemDC(pDC);

	if (!bPrinting && m_brHatch.m_hObject){
		CRect rect;
		GetClientRect(&rect);
		rect.right  = max(rect.right , m_totalDev.cx);
		rect.bottom = max(rect.bottom, m_totalDev.cy);
		m_brHatch.UnrealizeObject();
		CPoint pt(0, 0);
		pDC->LPtoDP(&pt);
		pt = pDC->SetBrushOrg(pt.x % 8, pt.y % 8);
		CBrush* old = pDC->SelectObject(&m_brHatch);
		pDC->FillRect(&rect, &m_brHatch);
		pDC->SelectObject(old);
	}

	CxImage* ima = pDoc->GetImage(); 
	if (ima) {
		if (bPrinting) {
			// get size of printer page (in pixels)
			int cxPage = pDC->GetDeviceCaps(HORZRES);
			int cyPage = pDC->GetDeviceCaps(VERTRES);
			//int dcbpp = pDC->GetDeviceCaps(BITSPIXEL);
			//int dcnc = pDC->GetDeviceCaps(NUMCOLORS);
			//int dcp = pDC->GetDeviceCaps(PLANES);
			// get printer pixels per inch
			int cxInch = pDC->GetDeviceCaps(LOGPIXELSX);
			int cyInch = pDC->GetDeviceCaps(LOGPIXELSY);
			// Best Fit case: create a rectangle which preserves the aspect ratio
			int cx = ima->GetXDPI() ? (ima->GetWidth()*cxInch)/ima->GetXDPI():ima->GetWidth()*cxInch/96;
			int cy = ima->GetYDPI() ? (ima->GetHeight()*cyInch)/ima->GetYDPI():ima->GetHeight()*cyInch/96;
			// print it!
			/*HDC TmpDC=CreateCompatibleDC(pDC->GetSafeHdc());
			HBITMAP bm =::CreateCompatibleBitmap(pDC->GetSafeHdc(), cx, cy);
			HBITMAP oldbm = (HBITMAP)::SelectObject(TmpDC,bm);
			BitBlt(TmpDC,0,0,cx,cy,0,0,0,WHITENESS);
			ima->Draw(TmpDC,CRect(0,0,cx,cy));
			BitBlt(pDC->GetSafeHdc(),100,100,cx,cy,TmpDC,0,0,SRCCOPY);
			DeleteObject(SelectObject(TmpDC,oldbm));
			DeleteDC(TmpDC);*/
			CxImage tmp;
			tmp.Copy(*ima);
			RGBQUAD c={255,255,255,0};
			if (tmp.GetTransIndex()>=0) tmp.SetPaletteColor((BYTE)tmp.GetTransIndex(),c);
			tmp.SetTransColor(c);
			tmp.AlphaStrip();
			tmp.Stretch(pDC->GetSafeHdc(), CRect(100,100,cx,cy));
		} else {
			if (pDoc->GetStretchMode()) {
				CRect rect;
				GetClientRect(&rect);
				ima->Draw(pDC->GetSafeHdc(), rect,0,pDoc->GetSmoothMode()!=0);
			} else {
				float zoom=pDoc->GetZoomFactor();
				if (zoom==1)
					ima->Draw(pDC->GetSafeHdc());
				else
					ima->Draw(pDC->GetSafeHdc(),
						CRect(0,0,(int)(ima->GetWidth()*zoom),(int)(ima->GetHeight()*zoom)),
						0,pDoc->GetSmoothMode()!=0);
			}

			if ( m_tracker.m_rect.Width()>0 && m_tracker.m_rect.Height()>0 )
				m_tracker.Draw(pDC);
		}
	}

	delete pMemDC;
}

Example #2

File: demoView.cpp Project: Aliceljm1/CxImageVS2010

void CDemoView::OnUpdate(CView* pSender, LPARAM lHint, CObject* pHint) 
{
	switch (lHint)
	{
	case WM_USER_NEWIMAGE:
		{
			m_tracker.m_rect = CRect(0,0,0,0);

			CDemoDoc* pDoc = GetDocument();
			CxImage*  ima  = pDoc->GetImage();
			if (ima) {
				int px=GetScrollPos(SB_HORZ);
				int py=GetScrollPos(SB_VERT);
				CSize sz(GetTotalSize());
				int x=(int)(ima->GetWidth()*pDoc->GetZoomFactor());
				int y=(int)(ima->GetHeight()*pDoc->GetZoomFactor());
				SetScrollSizes(MM_TEXT,	CSize(x,y));
				CSize sz2(GetTotalSize());

				CWnd* pFrame=GetParentFrame();
				RECT rClient;
				pFrame->GetClientRect(&rClient);

				if (sz.cx!=0 && sz.cy!=0){
					if (x>rClient.right) SetScrollPos(SB_HORZ,sz2.cx*px/sz.cx); else  SetScrollPos(SB_HORZ,0);
					if (y>rClient.bottom) SetScrollPos(SB_VERT,sz2.cy*py/sz.cy); else SetScrollPos(SB_VERT,0);
				}

				if (!(pFrame->IsIconic()||pFrame->IsZoomed())){
					RECT rMainCl,rFrame,rMainFr;
					((CMainFrame *)(AfxGetApp()->m_pMainWnd))->GetClientRect(&rMainCl);
					((CMainFrame *)(AfxGetApp()->m_pMainWnd))->GetWindowRect(&rMainFr);
					pFrame->GetWindowRect(&rFrame);
					pFrame->SetWindowPos(0,0,0,
						(4+rFrame.right-rFrame.left-rClient.right+rClient.left)+
						min(rMainCl.right-(rFrame.left-rMainFr.left+12),x),
						(4+rFrame.bottom-rFrame.top-rClient.bottom+rClient.top)+
						min(rMainCl.bottom-(rFrame.top-rMainFr.top+12),y),
						SWP_NOMOVE|SWP_NOZORDER);
					//ResizeParentToFit(1);
				}

				if (!ima->SelectionIsValid()) KillTimer(1);

#ifdef VATI_EXTENSIONS
				ima->SetJpegQualityF(theApp.m_optJpegQuality);
  #if CXIMAGE_SUPPORT_JPG
				ima->SetCodecOption(theApp.m_optJpegOptions,CXIMAGE_FORMAT_JPG);
  #endif
  #if CXIMAGE_SUPPORT_RAW
				ima->SetCodecOption(theApp.m_optRawOptions,CXIMAGE_FORMAT_RAW);
  #endif
#endif

				CMainFrame* pMain = (CMainFrame*) AfxGetMainWnd();
				if (pMain->m_HistoBar.IsWindowVisible()){
					pDoc->m_hmax=ima->Histogram(pDoc->m_hr,pDoc->m_hg,pDoc->m_hb,pDoc->m_hgray);
					pMain->m_HistoBar.Invalidate();
				} else {
					pDoc->m_hmax = 0;
				}
			}

			break;
		}
	default:
		{
			CDemoDoc* pDoc = GetDocument();
			if (pDoc){
				CxImage*  ima  = pDoc->GetImage();
				if (ima){
					if (pDoc->GetStretchMode()) SetScrollSizes(MM_TEXT,	CSize(0,0));
					else SetScrollSizes(MM_TEXT,CSize((int)(ima->GetWidth()*pDoc->GetZoomFactor()),
													  (int)(ima->GetHeight()*pDoc->GetZoomFactor())));
				}
			}
		}
	}
	CScrollView::OnUpdate(pSender, lHint, pHint);
}