demoview.cpp

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// demoView.cpp : implementation of the CDemoView class
//

#include "stdafx.h"
#include "ximage.h"
#include "MainFrm.h"
#include "demo.h"

#include "demoDoc.h"
#include "demoView.h"
#include "memdc.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

//////////////////////////////////////////////////////////////////////////////
// CDemoView

IMPLEMENT_DYNCREATE(CDemoView, CScrollView)

BEGIN_MESSAGE_MAP(CDemoView, CScrollView)
	//{{AFX_MSG_MAP(CDemoView)
	ON_WM_MOUSEMOVE()
	ON_WM_ERASEBKGND()
	ON_WM_SETFOCUS()
	ON_WM_LBUTTONDOWN()
	ON_WM_CONTEXTMENU()
	ON_WM_LBUTTONUP()
	ON_WM_TIMER()
	ON_WM_DESTROY()
	ON_WM_CHAR()
	ON_WM_RBUTTONDOWN()
	ON_WM_SETCURSOR()
	//}}AFX_MSG_MAP
	// Standard printing commands
	ON_COMMAND(ID_FILE_PRINT, CScrollView::OnFilePrint)
	ON_COMMAND(ID_FILE_PRINT_DIRECT, CScrollView::OnFilePrint)
	ON_COMMAND(ID_FILE_PRINT_PREVIEW, CScrollView::OnFilePrintPreview)
	ON_MESSAGE(WM_USER_NEWIMAGE, OnNewImage)
	ON_MESSAGE(WM_USER_PROGRESS, OnNewProgress)
END_MESSAGE_MAP()

//////////////////////////////////////////////////////////////////////////////
// CDemoView construction/destruction
CDemoView::CDemoView()
{
	SetScrollSizes(MM_TEXT, CSize(0, 0));

	VERIFY(m_brHatch.CreateHatchBrush(HS_DIAGCROSS, RGB(191, 191, 191)));

	m_tracker.m_rect = CRect(0,0,0,0);
	m_tracker.m_nStyle = 0;
	m_tracker.m_nStyle |= CRectTracker::dottedLine;
	m_tracker.m_nStyle |= CRectTracker::resizeOutside;
}
//////////////////////////////////////////////////////////////////////////////
CDemoView::~CDemoView()
{
}
//////////////////////////////////////////////////////////////////////////////
BOOL CDemoView::PreCreateWindow(CREATESTRUCT& cs)
{
	// TODO: Modify the Window class or styles here by modifying
	//  the CREATESTRUCT cs
	return CScrollView::PreCreateWindow(cs);
}
//////////////////////////////////////////////////////////////////////////////
// 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->GetWidth()*cxInch)/ima->GetXDPI();
			int cy=(ima->GetHeight()*cyInch)/ima->GetYDPI();
			// 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;
}
//////////////////////////////////////////////////////////////////////////////
// CDemoView printing
BOOL CDemoView::OnPreparePrinting(CPrintInfo* pInfo)
{
	// default preparation
	pInfo->SetMaxPage(1);
	return DoPreparePrinting(pInfo);
}
//////////////////////////////////////////////////////////////////////////////
void CDemoView::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
	// TODO: add extra initialization before printing
}
//////////////////////////////////////////////////////////////////////////////
void CDemoView::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
	// TODO: add cleanup after printing
}
//////////////////////////////////////////////////////////////////////////////
// CDemoView diagnostics
#ifdef _DEBUG
void CDemoView::AssertValid() const
{
	CScrollView::AssertValid();
}
//////////////////////////////////////////////////////////////////////////////
void CDemoView::Dump(CDumpContext& dc) const
{
	CScrollView::Dump(dc);
}
//////////////////////////////////////////////////////////////////////////////
CDemoDoc* CDemoView::GetDocument() // non-debug version is inline
{
	ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CDemoDoc)));
	return (CDemoDoc*)m_pDocument;
}
#endif //_DEBUG

//////////////////////////////////////////////////////////////////////////////
void CDemoView::GetImageXY(CDemoDoc *pDoc, CxImage *ima, long *x, long *y)
{
	if (!ima || !pDoc) return;

	CPoint point=GetScrollPosition();
	float fx =(float)(*x + point.x);
	float fy =(float)(*y + point.y);

	fx/=pDoc->GetZoomFactor();
	fy/=pDoc->GetZoomFactor();

	if (pDoc->GetStretchMode())	{
		CRect rect;
		GetClientRect(&rect);
		int width = rect.right - rect.left;
		int height = rect.bottom - rect.top;
		fx *= ima->GetWidth()/(float)width;
		fy *= ima->GetHeight()/(float)height;
	}
	*x = (long)fx;
	*y = (long)fy;
}
//////////////////////////////////////////////////////////////////////////////
// CDemoView message handlers
//////////////////////////////////////////////////////////////////////////////
void CDemoView::OnMouseMove(UINT nFlags, CPoint point) 
{
	CDemoDoc* pDoc = GetDocument();
	CxImage*  ima  = pDoc->GetImage();
	if (!ima)	return;

	// We'll get the RGB values at the point the user selects
	long x = point.x;
	long y = point.y;
	GetImageXY(pDoc, ima, &x,&y);

	char s[80];
	if (ima->IsInside(x,y))	{

		long yflip = ima->GetHeight() - y - 1;
		sprintf(s,"x: %d y: %d  idx: %d", x, y, ima->GetPixelIndex(x,yflip));
		RGBQUAD rgb=ima->GetPixelColor(x,yflip);
		if (ima->AlphaIsValid()) rgb.rgbReserved=ima->AlphaGet(x,yflip);
		else rgb.rgbReserved=ima->GetPaletteColor(ima->GetPixelIndex(x,yflip)).rgbReserved;
		sprintf(&s[strlen(s)],"  RGBA: (%d, %d, %d, %d)", rgb.rgbRed, rgb.rgbGreen, rgb.rgbBlue, rgb.rgbReserved);

		//Enable these lines if you want draw over the image	
		//if ((nFlags & MK_LBUTTON)==MK_LBUTTON){
		//	ima->SetPixelColor(x,yflip,RGB(rand()/(RAND_MAX/256),rand()/(RAND_MAX/256),rand()/(RAND_MAX/256)));
		//	Invalidate(0);
		//}
#ifdef VATI_EXTENSIONS
		if (nFlags & MK_RBUTTON && !(nFlags & MK_LBUTTON))
		{
			switch (pDoc->m_tool){
			case 1: // selection
				if ( nFlags & MK_CONTROL ) // CTRL+right button: move selection
				{
					for (int i=0; i<pDoc->m_NumSel; i++)
					{
						pDoc->m_Sel[i].x += (long)(x-m_oldPnt.x);
						pDoc->m_Sel[i].y += (long)(y-m_oldPnt.y);
					}
					m_oldPnt.x = x;
					m_oldPnt.y = y;
					//redraw selection
					CWnd* pFrame=GetParentFrame();
					RECT rClient;
					pFrame->GetClientRect(&rClient);
					pFrame->RedrawWindow( &rClient, NULL, RDW_INVALIDATE | RDW_UPDATENOW);
					DrawSelection();
				}
				else if ( !(nFlags & MK_CONTROL) && pDoc->m_isRectSel && pDoc->m_NumSel==5 )
				{
					// calculate angle difference looking from rectangle center
					double d_angle = 
						atan2( (y - m_orgPnt.y), (x - m_orgPnt.x) )
					  - atan2( (m_oldPnt.y - m_orgPnt.y), (m_oldPnt.x - m_orgPnt.x) );
					m_oldPnt.x = x;
					m_oldPnt.y = y;
					Dpoint2d    p;

                    // rotate corner points around center point
					for(int i=0;i<5;i++)
					{
						p.x = m_dpnt[i].x - m_orgPnt.x;
						p.y = m_dpnt[i].y - m_orgPnt.y;
						m_dpnt[i].x = p.x*cos(d_angle) - p.y*sin(d_angle) + m_orgPnt.x;
						m_dpnt[i].y = p.x*sin(d_angle) + p.y*cos(d_angle) + m_orgPnt.y;
						// write back to selection
						pDoc->m_Sel[i].x = (long)m_dpnt[i].x ;
						pDoc->m_Sel[i].y = (long)m_dpnt[i].y ;

					}
					// redraw the rectangle
					CWnd* pFrame=GetParentFrame();
					RECT rClient;
					pFrame->GetClientRect(&rClient);
					pFrame->RedrawWindow( &rClient, NULL, RDW_INVALIDATE | RDW_UPDATENOW);
					DrawSelection();
				}
			break;			
			} // end switch
		} // end if MK_RBUTTON
#endif	

		if (nFlags & MK_LBUTTON)
			switch (pDoc->m_tool){
			case 0: // move
			{
				SetCursor(LoadCursor(0,IDC_SIZEALL));
				CSize sz(GetTotalSize());
				CWnd* pFrame=GetParentFrame();
				RECT rClient;
				pFrame->GetClientRect(&rClient);
				if (sz.cx>rClient.right) SetScrollPos(SB_HORZ,m_RefScroll.x - point.x + m_RefPoint.x); else SetScrollPos(SB_HORZ,0);
				if (sz.cy>rClient.bottom) SetScrollPos(SB_VERT,m_RefScroll.y - point.y + m_RefPoint.y); else SetScrollPos(SB_VERT,0);
				Invalidate(0);
				break;
			}
			case 1:	//selection
				SetCursor(LoadCursor(0,IDC_CROSS));
#if CXIMAGE_DEMO_SELECT
#ifdef VATI_EXTENSIONS
				if ( nFlags & MK_SHIFT )
				{
					// rectangle selection
					pDoc->m_isRectSel = 1;
					// in rectangle mode, selection array has 0,1 or 5 points
					if (!pDoc->m_NumSel) 
					{
						pDoc->m_Sel[0].x = x;
						pDoc->m_Sel[0].y = y;
						pDoc->m_NumSel = 1;
					}
					else // already has at least one corner
					{
						pDoc->m_Sel[1].x = x;
						pDoc->m_Sel[1].y = pDoc->m_Sel[0].y;
						pDoc->m_Sel[2].x = x;
						pDoc->m_Sel[2].y = y;
						pDoc->m_Sel[3].x = pDoc->m_Sel[0].x;
						pDoc->m_Sel[3].y = y;
						//close the rectangle:
						pDoc->m_Sel[4].x = pDoc->m_Sel[0].x;
						pDoc->m_Sel[4].y = pDoc->m_Sel[0].y;
						pDoc->m_NumSel = 5;
					}
					// delete old rectangle from display:
					CWnd* pFrame=GetParentFrame();
					RECT rClient;
					pFrame->GetClientRect(&rClient);
					pFrame->RedrawWindow( &rClient, NULL, RDW_INVALIDATE | RDW_UPDATENOW);
					// draw the new rectangle
					DrawSelection();
				}
				else
#endif
				{
					//freehand selection (original)
					float zoom=pDoc->GetZoomFactor();
					CPoint pos(GetScrollPosition());
					int i=pDoc->m_NumSel;
					pDoc->m_Sel[i].x = (long)((point.x + pos.x)/zoom);
					pDoc->m_Sel[i].y = (long)((point.y + pos.y)/zoom);
					if (i<(MAX_SEL_POINTS-2)) pDoc->m_NumSel++;
					DrawSelection();
				}
#endif
		} //end switch

	} else strcpy(s," ");
	
	CStatusBar& statusBar = ((CMainFrame *)(AfxGetApp()->m_pMainWnd))->GetStatusBar();
	statusBar.SetPaneText(0, s);
	
	CScrollView::OnMouseMove(nFlags, point);
}
//////////////////////////////////////////////////////////////////////////////
BOOL CDemoView::OnEraseBkgnd(CDC* pDC) 
{
	return 1;
}
//////////////////////////////////////////////////////////////////////////////
void CDemoView::OnSetFocus(CWnd* pOldWnd) 
{
	CScrollView::OnSetFocus(pOldWnd);
	
	CDemoDoc* pDoc = GetDocument();
	if (pDoc) pDoc->UpdateStatusBar();
}
//////////////////////////////////////////////////////////////////////////////
void CDemoView::OnLButtonDown(UINT nFlags, CPoint point) 
{
	CDemoDoc* pDoc = GetDocument();
	if (pDoc) {
		switch(pDoc->m_tool){
		case 0: // select
		case 1:
			{
#ifdef VATI_EXTENSIONS
				if ( nFlags & MK_SHIFT )
					pDoc->m_isRectSel = 1;
				else
					pDoc->m_isRectSel = 0;
#endif
				CxImage* ima = pDoc->GetImage();
				if (ima) {
					m_RefScroll = GetScrollPosition();
					m_RefPoint.x = point.x;
					m_RefPoint.y = point.y;
				}
			}
			break;
		case 2: // zoom
			if (!pDoc->GetWaitingClick()) PostMessage(WM_COMMAND,ID_VIEW_ZOOMIN);
			break;
		case 4: // tracker
			{
				if (m_tracker.HitTest(point) < 0)
				{
					CRectTracker track;
					if (track.TrackRubberBand(this, point, true)) {
						track.m_rect.NormalizeRect();
						m_tracker.m_rect = track.m_rect;