LRESULT OnPaint(HWND hWnd,WPARAM wParam,LPARAM lParam)
{
HDC hdc;
PAINTSTRUCT ps;
int idx;
hdc=BeginPaint(hWnd, &ps);
for (idx=0;idx<arNum;idx++) {
switch (arObj[idx]->Type) {
case DT_LINE:
if ((arObj[idx]->Flag & 0x3) == DS_LT || (arObj[idx]->Flag & 0x3) == DS_RB) {
MoveToEx(hdc,arObj[idx]->rt.left,arObj[idx]->rt.top,NULL);
LineTo(hdc,arObj[idx]->rt.right,arObj[idx]->rt.bottom);
} else {
MoveToEx(hdc,arObj[idx]->rt.left,arObj[idx]->rt.bottom,NULL);
LineTo(hdc,arObj[idx]->rt.right,arObj[idx]->rt.top);
}
break;
case DT_ELLIPSE:
Ellipse(hdc,arObj[idx]->rt.left,arObj[idx]->rt.top,
arObj[idx]->rt.right,arObj[idx]->rt.bottom);
break;
case DT_RECTANGLE:
Rectangle(hdc,arObj[idx]->rt.left,arObj[idx]->rt.top,
arObj[idx]->rt.right,arObj[idx]->rt.bottom);
break;
}
}
if (NowSel != -1) {
DrawTracker(hdc,NowSel);
}
EndPaint(hWnd, &ps);
return 0;
}
LRESULT OnPaint(HWND hWnd,WPARAM wParam,LPARAM lParam)
{
HDC hdc;
PAINTSTRUCT ps;
int idx;
HPEN hPen,hOldPen;
HBRUSH hBrush,hOldBrush;
RECT crt;
HDC hMemDC;
HBITMAP hOldBitmap;
int x,y;
BITMAPFILEHEADER *fh;
BITMAPINFOHEADER *ih;
int bx,by;
BYTE *pRaster;
HFONT hFont,hOldFont;
int FontHeight;
int FontIdx;
LOGFONT tFont;
hdc=BeginPaint(hWnd, &ps);
hMemDC=CreateCompatibleDC(hdc);
GetClientRect(hWnd,&crt);
if (hBackBit == NULL) {
hBackBit=CreateCompatibleBitmap(hdc,crt.right,crt.bottom);
}
hOldBitmap=(HBITMAP)SelectObject(hMemDC,hBackBit);
FillRect(hMemDC,&crt,GetSysColorBrush(COLOR_WINDOW));
if (bGridLine) {
hPen=CreatePen(PS_SOLID,1,RGB(192,192,192));
hOldPen=(HPEN)SelectObject(hMemDC,hPen);
for (y=0; y<crt.bottom; y=y+GridLineY*GridY) {
MoveToEx(hMemDC,0,y,NULL);
LineTo(hMemDC,crt.right,y);
}
for (x=0; x<crt.right; x=x+GridLineX*GridX) {
MoveToEx(hMemDC,x,0,NULL);
LineTo(hMemDC,x,crt.bottom);
}
DeleteObject(SelectObject(hMemDC,hOldPen));
}
SetStretchBltMode(hMemDC,StretchMode);
SetBkMode(hMemDC,TRANSPARENT);
for (idx=0; idx<arNum; idx++) {
if (arObj[idx]->LineColor == (COLORREF)-1) {
hPen=(HPEN)GetStockObject(NULL_PEN);
} else {
hPen=CreatePen(PS_INSIDEFRAME,arObj[idx]->LineWidth,arObj[idx]->LineColor);
}
hOldPen=(HPEN)SelectObject(hMemDC,hPen);
if (arObj[idx]->PlaneColor == (COLORREF)-1) {
hBrush=(HBRUSH)GetStockObject(NULL_BRUSH);
} else {
hBrush=CreateSolidBrush(arObj[idx]->PlaneColor);
}
hOldBrush=(HBRUSH)SelectObject(hMemDC,hBrush);
switch (arObj[idx]->Type) {
case DT_LINE:
if ((arObj[idx]->Flag & 0x3) == DS_LT || (arObj[idx]->Flag & 0x3) == DS_RB) {
MoveToEx(hMemDC,arObj[idx]->rt.left,arObj[idx]->rt.top,NULL);
LineTo(hMemDC,arObj[idx]->rt.right,arObj[idx]->rt.bottom);
} else {
MoveToEx(hMemDC,arObj[idx]->rt.left,arObj[idx]->rt.bottom,NULL);
LineTo(hMemDC,arObj[idx]->rt.right,arObj[idx]->rt.top);
}
break;
case DT_ELLIPSE:
Ellipse(hMemDC,arObj[idx]->rt.left,arObj[idx]->rt.top,
arObj[idx]->rt.right,arObj[idx]->rt.bottom);
break;
case DT_RECTANGLE:
Rectangle(hMemDC,arObj[idx]->rt.left,arObj[idx]->rt.top,
arObj[idx]->rt.right,arObj[idx]->rt.bottom);
break;
case DT_BITMAP:
fh=(BITMAPFILEHEADER *)arObj[idx]->Bitmap;
pRaster=(PBYTE)fh+fh->bfOffBits;
ih=(BITMAPINFOHEADER *)((PBYTE)fh+sizeof(BITMAPFILEHEADER));
bx=ih->biWidth;
by=ih->biHeight;
StretchDIBits(hMemDC,arObj[idx]->rt.left,arObj[idx]->rt.top,
arObj[idx]->rt.right-arObj[idx]->rt.left,
arObj[idx]->rt.bottom-arObj[idx]->rt.top,0,0,bx,by,
pRaster,(BITMAPINFO *)ih,DIB_RGB_COLORS,SRCCOPY);
break;
case DT_META:
PlayPlaceableMeta(hMemDC,arObj[idx]->Meta,arObj[idx]->Len,&arObj[idx]->rt);
break;
case DT_TEXT:
FillRect(hMemDC,&arObj[idx]->rt,hBrush);
FontHeight=arObj[idx]->FontSize*GetDeviceCaps(hMemDC,LOGPIXELSY)/72;
FontIdx=FindFontFromFace(arObj[idx]->FontFace);
if (FontIdx!=-1) {
tFont=logfont[FontIdx];
tFont.lfHeight=FontHeight;
tFont.lfWidth=0;
hFont=CreateFontIndirect(&tFont);
hOldFont=(HFONT)SelectObject(hMemDC,hFont);
}
if (arObj[idx]->FontColor != (COLORREF)-1) {
SetTextColor(hMemDC,arObj[idx]->FontColor);
DrawText(hMemDC,arObj[idx]->Text,-1,&arObj[idx]->rt,DT_WORDBREAK);
}
if (FontIdx!=-1) {
DeleteObject(SelectObject(hMemDC,hOldFont));
}
break;
}
SelectObject(hMemDC,hOldPen);
SelectObject(hMemDC,hOldBrush);
if (arObj[idx]->LineColor != (COLORREF)-1) {
DeleteObject(hPen);
}
if (arObj[idx]->PlaneColor != (COLORREF)-1) {
DeleteObject(hBrush);
}
}
if (NowSel != -1) {
DrawTracker(hMemDC,NowSel);
}
BitBlt(hdc,0,0,crt.right,crt.bottom,hMemDC,0,0,SRCCOPY);
SelectObject(hMemDC,hOldBitmap);
DeleteDC(hMemDC);
EndPaint(hWnd, &ps);
return 0;
}
BOOL CPolylineCreatorTracker::CreatePolyline(CWnd* pWnd, CDPoint point, CSnapper* pSnapper)
{
// don't handle if capture already set
if (::GetCapture() != NULL)
return FALSE;
AfxLockTempMaps(); // protect maps while looping
m_bErase = FALSE;
m_bFinalErase = FALSE;
// set capture to the window which received this message
pWnd->SetCapture();
ASSERT(pWnd == CWnd::GetCapture());
pWnd->UpdateWindow();
m_Points.AddTail(new CDPOINT(point));
CPoint LastPoint(point);
// get DC for drawing
CDC* pDrawDC;
// otherwise, just use normal DC
pDrawDC = pWnd->GetDC();
ASSERT_VALID(pDrawDC);
BOOL bMoved = FALSE;
// get messages until capture lost or cancelled/accepted
for (;;)
{
MSG msg;
VERIFY(::GetMessage(&msg, NULL, 0, 0));
if (CWnd::GetCapture() != pWnd)
break;
if(msg.message == WM_MOUSEMOVE)
DispatchMessage(&msg);
switch (msg.message)
{
// handle movement/accept messages
case WM_MOUSEMOVE:
{
// handle resize cases (and part of move)
CPoint point;
::GetCursorPos(&point);
pWnd->ScreenToClient(&point);
if((::GetKeyState(VK_SHIFT) & 0x8000)!=0)
{
CDPoint *pLastPoint = (CDPoint*)m_Points.GetTail();
if(pLastPoint!=NULL)
{
CDPOINT ppp = CDPoint(point)-(*pLastPoint);
if(ABS(ppp.x)>ABS(ppp.y))
ppp.y=0;
else
ppp.x=0;
point = *pLastPoint+ppp;
}
}
if(pSnapper!=NULL)
pSnapper->FixSnapTo(&point);
if (LastPoint != point)
{
m_bErase = FALSE;
DrawTracker(point, pDrawDC, pWnd);
bMoved = TRUE;
}
LastPoint = point;
}
break;
case WM_LBUTTONDOWN:
{
// handle resize cases (and part of move)
CPoint point;
::GetCursorPos(&point);
pWnd->ScreenToClient(&point);
CDPoint dpoint(point);
if((::GetKeyState(VK_SHIFT) & 0x8000)!=0)
{
CDPoint *pLastPoint = (CDPoint*)m_Points.GetTail();
if(pLastPoint!=NULL)
{
CDPOINT ppp = dpoint-(*pLastPoint);
if(ABS(ppp.x)>ABS(ppp.y))
ppp.y=0;
else
ppp.x=0;
dpoint = *pLastPoint+ppp;
}
}
if(pSnapper!=NULL)
pSnapper->FixSnapTo(&dpoint);
point = dpoint;
if (LastPoint != dpoint)
{
m_bErase = FALSE;
DrawTracker(point, pDrawDC, pWnd);
}
m_Points.AddTail(new CDPoint(dpoint));
//the tracker will not erease the last line
if(m_PointsLast!=NULL)
delete []m_PointsLast;
bMoved = FALSE;
m_PointsLast = NULL;
LastPoint = point;
}
break;
// handle cancel messages
case WM_KEYDOWN:
if (msg.wParam != VK_ESCAPE)
break;
case WM_LBUTTONDBLCLK:
case WM_RBUTTONDOWN:
{
if (bMoved)
{
m_bErase = m_bFinalErase = TRUE;
DrawTracker(point, pDrawDC, pWnd);
}
UINT uiCount = GetPointsCount();
if(uiCount>1)//erace all the line
{
LPPOINT lpPoints = new POINT[uiCount];
LPCDPOINT lpDPoints = new CDPOINT[uiCount];
GetPoints(lpDPoints);
for(UINT ui=0; ui<uiCount; ui++)
lpPoints[ui] = lpDPoints[ui];
CLineTracker::DrawDragPolyLine(pDrawDC, lpPoints, 1, NULL, 1, uiCount);
delete []lpPoints;
delete []lpDPoints;
}
}
goto ExitLoop;
// just dispatch rest of the messages
default:
DispatchMessage(&msg);
break;
}
}
ExitLoop:
pWnd->ReleaseDC(pDrawDC);
ReleaseCapture();
AfxUnlockTempMaps(FALSE);
// restore rect in case bMoved is still FALSE
m_bFinalErase = FALSE;
m_bErase = FALSE;
// return TRUE only if rect has changed
return GetPointsCount()>1;
}
BOOL CPicTracker::Track(CWnd* pWnd, CPoint point, BOOL bRotate, CSnapper* pSnapper,
CWnd* pWndClipTo)
{
BOOL bResizeOrMove = HitTest(point)==hitOnPoint ? TRUE : FALSE;
// don't handle if capture already set
if (::GetCapture() != NULL)
return FALSE;
m_rectOrigianl = m_rect;
AfxLockTempMaps(); // protect maps while looping
ASSERT(!m_bFinalErase);
// set capture to the window which received this message
pWnd->SetCapture();
ASSERT(pWnd == CWnd::GetCapture());
pWnd->UpdateWindow();
if (pWndClipTo != NULL)
pWndClipTo->UpdateWindow();
CPoint LastPoint(point);
// get DC for drawing
CDC* pDrawDC;
if (pWndClipTo != NULL)
{
// clip to arbitrary window by using adjusted Window DC
pDrawDC = pWndClipTo->GetDCEx(NULL, DCX_CACHE);
}
else
{
// otherwise, just use normal DC
pDrawDC = pWnd->GetDC();
}
ASSERT_VALID(pDrawDC);
CDRectangle rectOld;
BOOL bMoved = FALSE;
// get messages until capture lost or cancelled/accepted
for (;;)
{
MSG msg;
VERIFY(::GetMessage(&msg, NULL, 0, 0));
if (CWnd::GetCapture() != pWnd)
break;
if(msg.message == WM_MOUSEMOVE)
DispatchMessage(&msg);
switch (msg.message)
{
// handle movement/accept messages
case WM_LBUTTONUP:
case WM_MOUSEMOVE:
OnCheange:
{
rectOld = m_rect;
m_rect = m_rectOrigianl;
// handle resize cases (and part of move)
CPoint p;
::GetCursorPos(&p);
pWnd->ScreenToClient(&p);
p -= LastPoint;
//LastPoint = point;
// handle move case
if(bRotate)
{
LPDPOINT lpPoints = m_rect.GetPoints();
CPoint pp = p+LastPoint;
double dAngle = GetPointAng(&pp, &LastPoint);
double dist = sqrt((double)(p.x*p.x + p.y*p.y));
if(dist<30)
{
dAngle /= 30;
dAngle *= dist;
}
if(::GetKeyState(VK_SHIFT) & 0x8000) //if the shift is pressed then snap to the close 45 degrees
{
dAngle = ((int)((dAngle/(RAD90D/2))+0.499))*(RAD90D/2);
}
RotatePoints((LPCDPOINT)lpPoints, m_rect.GetNumOfPoints(), dAngle, NULL);
}
else if (!bResizeOrMove)
{
if((::GetKeyState(VK_SHIFT) & 0x8000)!=0)
{
if(ABS(p.x)>ABS(p.y))
p.y=0;
else
p.x=0;
}
LPDPOINT lpPoints = m_rect.GetPoints();
for(int i=0; i<m_rect.GetNumOfPoints();i++)
{
lpPoints[i].x += p.x;
lpPoints[i].y += p.y;
}
if(pSnapper!=NULL)
pSnapper->FixSnapTo((LPCDPOINT)lpPoints,m_rect.GetNumOfPoints());
}
else
{
double dAngle1 = m_rect.GetAngle1();
double dAngle2 = m_rect.GetAngle2()-RAD90D;
CDPoint center(0,0);
CDPoint dp(p);
RotatePoints(&dp, 1, -dAngle1, ¢er);
if(CheckRetainProportions() && (m_dWidthDivHeight!=0)) //if the shift is pressed then remain proporions
{
dp.y=dp.x/m_dWidthDivHeight;
}
LPDPOINT lpPoints = m_rect.GetPoints();
center = GetPointsCenter((LPCDPOINT)lpPoints, m_rect.GetNumOfPoints());
RotatePoints((LPCDPOINT)lpPoints, m_rect.GetNumOfPoints(), -dAngle1, ¢er);
int i;
for(i=0; i<m_rect.GetNumOfPoints(); i++)
{
CDPoint ppp = lpPoints[i];
ppp-=center;
if(ppp.x>0)
ppp.x += dp.x;
else
ppp.x -= dp.x;
ppp+=center;
lpPoints[i] = ppp;
}
RotatePoints((LPCDPOINT)lpPoints, m_rect.GetNumOfPoints(), dAngle1-dAngle2, ¢er);
for(i=0; i<m_rect.GetNumOfPoints(); i++)
{
CDPoint ppp = lpPoints[i];
ppp-=center;
if(ppp.y>0)
ppp.y += dp.y;
else
ppp.y -= dp.y;
ppp+=center;
lpPoints[i] = ppp;
}
RotatePoints((LPCDPOINT)lpPoints, m_rect.GetNumOfPoints(), dAngle2, ¢er);
if(pSnapper!=NULL)
pSnapper->FixSnapTo((LPCDPOINT)lpPoints,m_rect.GetNumOfPoints());
}
// only redraw and callback if the rect actually changed!
m_bFinalErase = (msg.message == WM_LBUTTONUP);
if (!rectOld.IsEqual(m_rect) || m_bFinalErase)
{
if (bMoved)
{
m_bErase = TRUE;
DrawTracker(&rectOld, pWndClipTo, pDrawDC, pWnd);
}
if (msg.message != WM_LBUTTONUP)
bMoved = TRUE;
}
if (m_bFinalErase)
goto ExitLoop;
if (!rectOld.IsEqual(m_rect))
{
m_bErase = FALSE;
DrawTracker(&m_rect, pWndClipTo, pDrawDC, pWnd);
}
}
break;
case WM_KEYUP:
if (msg.wParam == VK_SHIFT)
goto OnCheange;
break;
// handle cancel messages
case WM_KEYDOWN:
if (msg.wParam == VK_SHIFT)
goto OnCheange;
if (msg.wParam != VK_ESCAPE)
break;
case WM_RBUTTONDOWN:
if (bMoved)
{
m_bErase = m_bFinalErase = TRUE;
DrawTracker(&m_rect, pWndClipTo, pDrawDC, pWnd);
}
m_rect = m_rectOrigianl;
goto ExitLoop;
// just dispatch rest of the messages
default:
DispatchMessage(&msg);
break;
}
}
ExitLoop:
if (pWndClipTo != NULL)
pWndClipTo->ReleaseDC(pDrawDC);
else
pWnd->ReleaseDC(pDrawDC);
ReleaseCapture();
AfxUnlockTempMaps(FALSE);
// restore rect in case bMoved is still FALSE
if (!bMoved)
m_rect = m_rectOrigianl;
m_bFinalErase = FALSE;
m_bErase = FALSE;
// return TRUE only if rect has changed
return !m_rectOrigianl.IsEqual(m_rect);
}
LRESULT OnPaint(HWND hWnd,WPARAM wParam,LPARAM lParam)
{
HDC hdc;
PAINTSTRUCT ps;
int idx;
HPEN hPen,hOldPen;
HBRUSH hBrush,hOldBrush;
RECT crt;
HDC hMemDC;
HBITMAP hOldBitmap;
int x,y;
hdc=BeginPaint(hWnd, &ps);
hMemDC=CreateCompatibleDC(hdc);
GetClientRect(hWnd,&crt);
if (hBackBit == NULL) {
hBackBit=CreateCompatibleBitmap(hdc,crt.right,crt.bottom);
}
hOldBitmap=(HBITMAP)SelectObject(hMemDC,hBackBit);
FillRect(hMemDC,&crt,GetSysColorBrush(COLOR_WINDOW));
if (bGridLine) {
hPen=CreatePen(PS_SOLID,1,RGB(192,192,192));
hOldPen=(HPEN)SelectObject(hMemDC,hPen);
for (y=0;y<crt.bottom;y=y+GridLineY*GridY) {
MoveToEx(hMemDC,0,y,NULL);
LineTo(hMemDC,crt.right,y);
}
for (x=0;x<crt.right;x=x+GridLineX*GridX) {
MoveToEx(hMemDC,x,0,NULL);
LineTo(hMemDC,x,crt.bottom);
}
DeleteObject(SelectObject(hMemDC,hOldPen));
}
for (idx=0;idx<arNum;idx++) {
if (arObj[idx]->LineColor == (COLORREF)-1) {
hPen=(HPEN)GetStockObject(NULL_PEN);
} else {
hPen=CreatePen(PS_INSIDEFRAME,arObj[idx]->LineWidth,arObj[idx]->LineColor);
}
hOldPen=(HPEN)SelectObject(hMemDC,hPen);
if (arObj[idx]->PlaneColor == (COLORREF)-1) {
hBrush=(HBRUSH)GetStockObject(NULL_BRUSH);
} else {
hBrush=CreateSolidBrush(arObj[idx]->PlaneColor);
}
hOldBrush=(HBRUSH)SelectObject(hMemDC,hBrush);
switch (arObj[idx]->Type) {
case DT_LINE:
if ((arObj[idx]->Flag & 0x3) == DS_LT || (arObj[idx]->Flag & 0x3) == DS_RB) {
MoveToEx(hMemDC,arObj[idx]->rt.left,arObj[idx]->rt.top,NULL);
LineTo(hMemDC,arObj[idx]->rt.right,arObj[idx]->rt.bottom);
} else {
MoveToEx(hMemDC,arObj[idx]->rt.left,arObj[idx]->rt.bottom,NULL);
LineTo(hMemDC,arObj[idx]->rt.right,arObj[idx]->rt.top);
}
break;
case DT_ELLIPSE:
Ellipse(hMemDC,arObj[idx]->rt.left,arObj[idx]->rt.top,
arObj[idx]->rt.right,arObj[idx]->rt.bottom);
break;
case DT_RECTANGLE:
Rectangle(hMemDC,arObj[idx]->rt.left,arObj[idx]->rt.top,
arObj[idx]->rt.right,arObj[idx]->rt.bottom);
break;
}
SelectObject(hMemDC,hOldPen);
SelectObject(hMemDC,hOldBrush);
if (arObj[idx]->LineColor != (COLORREF)-1) {
DeleteObject(hPen);
}
if (arObj[idx]->PlaneColor != (COLORREF)-1) {
DeleteObject(hBrush);
}
}
if (NowSel != -1) {
DrawTracker(hMemDC,NowSel);
}
BitBlt(hdc,0,0,crt.right,crt.bottom,hMemDC,0,0,SRCCOPY);
SelectObject(hMemDC,hOldBitmap);
DeleteDC(hMemDC);
EndPaint(hWnd, &ps);
return 0;
}
