BOOL CNCaptureView::_SetSelectRectClipInfo(const CPoint& point)
{
BOOL bRet = FALSE;
CDrawTool* pCurDrawTools = CDrawCanvas<CNCaptureView>::GetCurrentTool();
if (pCurDrawTools->IsNeedClip())
{
if(!GetSelection().empty())
{
CDrawObject* pActiveDrawObject = GetSelection().front();
if (pActiveDrawObject)
{
m_bClipCursor = TRUE;
CRect rcSelect = pActiveDrawObject->GetPosition();
rcSelect.NormalizeRect();
DocToClient(&rcSelect);
CRect rcClipTarget = m_rcDrawTarget;
rcClipTarget.OffsetRect( -rcClipTarget.TopLeft());
DocToClient(&rcClipTarget);
ClientToScreen(&rcClipTarget);
if (smMove == m_nCurrentSelectMode )
{
rcClipTarget.right -= rcSelect.Width() ;
rcClipTarget.bottom -= rcSelect.Height();
rcClipTarget.OffsetRect(point.x - rcSelect.left, point.y - rcSelect.top);
}
else if(smSize == m_nCurrentSelectMode)// || smNetSelectSize == m_nCurrentSelectMode)
{
//now do nothing
}
rcClipTarget.right += 1;
rcClipTarget.bottom += 1;
//FTLTRACE(TEXT("rcClipTarget= [%d,%d], [%d,%d], {%dx%d}\n"), rcClipTarget.left, rcClipTarget.top,
// rcClipTarget.right, rcClipTarget.bottom,
// rcClipTarget.Width(), rcClipTarget.Height());
API_VERIFY(::ClipCursor(&rcClipTarget));
}
}
}
return bRet;
}
void CNCaptureView::_SetScrollInfo(float newZoomScale, BOOL bUseCenterPoint)
{
if (m_pImage && !m_pImage->IsNull())
{
BOOL bRet = FALSE;
CRect rcClient;
API_VERIFY(GetClientRect(&rcClient));
//save old ptLogical
CPoint ptMouseDevice(0, 0);
API_VERIFY(::GetCursorPos(&ptMouseDevice));
API_VERIFY(ScreenToClient(&ptMouseDevice));
if (!rcClient.PtInRect(ptMouseDevice) || bUseCenterPoint)
{
ptMouseDevice = rcClient.CenterPoint();
}
CPoint ptOldLogical = ptMouseDevice;
ClientToDoc(&ptOldLogical);
//ptOldPos.Offset(m_rcDrawTarget.TopLeft());
SetZoomScale(newZoomScale);
//FTLTRACE(TEXT("Zoom=%f, image=[%d,%d], sizeAll=[%d,%d]\n"),
// s_FixedZoomScales[m_iFixedZoomIndex], m_pImage->GetWidth(), m_pImage->GetHeight(),
// (int)((float)m_pImage->GetWidth() * s_FixedZoomScales[m_iFixedZoomIndex]),
// (int)((float)m_pImage->GetHeight() * s_FixedZoomScales[m_iFixedZoomIndex]));
SetScrollSize(m_pImage->GetWidth(), m_pImage->GetHeight(), TRUE, true);
CPoint ptNewClient = ptOldLogical;
//ptNewPos.Offset(-m_rcDrawTarget.TopLeft());
DocToClient(&ptNewClient);
CPoint ptNewOffset = ptNewClient;
ptNewOffset.Offset(-ptMouseDevice);
SetScrollOffset(ptNewOffset.x, ptNewOffset.y);
/*
if (!GetSelection().empty())
{
CTextObject* pTextObject = dynamic_cast<CTextObject*>(GetSelection().front());
if (pTextObject)
{
//SIZEL newExtent = {0};
//newExtent.cy = (double)pTextObject->GetPosition().Height() * 2540 * newZoomScale * 96;
//newExtent.cx = (double)pTextObject->GetPosition().Width() * 2540 * newZoomScale * 96;
pTextObject->GetRichEditPanel()->SetZoom(m_sizeAll.cx, m_sizeLogAll.cx);
//pTextObject->GetRichEditPanel()->SetExtent(&newExtent, TRUE);
}
}
*/
//FTLTRACE(TEXT("ptMouseDevice=[%d,%d], ptOldLogical=[%d,%d], ptNewClient=[%d,%d], ptNewOffset=[%d,%d]\n"),
// ptMouseDevice.x, ptMouseDevice.y, ptOldLogical.x, ptOldLogical.y, ptNewClient.x, ptNewClient.y,
// ptNewOffset.x, ptNewOffset.y);
_UpdateMousePosInfo(ptMouseDevice);
SetCurrentToolType(CalcCurrentToolType());
//DrawObjectList& SelectObjects = GetSelection();
//if (SelectObjects.size() == 1 )
//{
// CDrawObject* pDrawObj = SelectObjects.front();
// if (dotSelectRect == pDrawObj->GetDrawObjType())
// {
// CRect rcDevice = pDrawObj->GetPosition();
// DocToClient(&rcDevice);
// ScrollToView(rcDevice);
// }
//}
}
else //make scrollbar disappear
{
SetZoomScale(s_FixedZoomScales[s_NormalZoomIndex]);
SetScrollSize(1, 1, FALSE, FALSE);
}
}
void CDrawView::OnDraw(CDC* pDC)
{
CDrawDoc* pDoc = GetDocument();
ASSERT_VALID(pDoc);
CDC dc;
CDC* pDrawDC = pDC;
CBitmap bitmap;
CBitmap* pOldBitmap;
// only paint the rect that needs repainting
CRect client;
pDC->GetClipBox(client); //检取当前裁剪边界的最近限定矩形的大小
CRect rect = client;
DocToClient(rect);
rect.NormalizeRect();
TRACE("CDrawView::OnDraw\n");
if (!pDC->IsPrinting())//不加会闪屏
{
// draw to offscreen bitmap for fast looking repaints
if (dc.CreateCompatibleDC(pDC)) //创建一个与指定设备兼容的内存设备上下文环境
{
if (bitmap.CreateCompatibleBitmap(pDC, rect.Width(), rect.Height()))//创建与指定的设备环境相关的设备兼容的位图
{
OnPrepareDC(&dc, NULL);
pDrawDC = &dc;
// offset origin more because bitmap is just piece of the whole drawing
dc.OffsetViewportOrg(-rect.left, -rect.top);//相对于当前视区起点坐标修正视区起点坐标
pOldBitmap = dc.SelectObject(&bitmap); //选择一对象到指定的设备上下文环境中
dc.SetBrushOrg(rect.left % 8, rect.top % 8);//指定GDI将分配给下画笔应用程序选择到设备上下文的原点
// might as well clip to the same rectangle
dc.IntersectClipRect(client); //创建了一个新的剪切区域，该区域是当前剪切区域和一个特定矩形的交集
}
}
}
// paint background
CBrush brush;
if (!brush.CreateSolidBrush(pDoc->GetPaperColor()))
return;
brush.UnrealizeObject(); //重置一个逻辑调色板
pDrawDC->FillRect(client, &brush); //用指定的画刷填充矩形
Painter::GetInstancePtr()->SetCDC(pDrawDC);
Painter::GetInstancePtr()->SetCWnd(this);
if (!pDC->IsPrinting() && m_bGrid)
DrawGrid(pDrawDC);
g_pGuiManager->Draw();
if (pDrawDC != pDC)
{
pDC->SetViewportOrg(0, 0);
pDC->SetWindowOrg(0,0);
pDC->SetMapMode(MM_TEXT);
dc.SetViewportOrg(0, 0);
dc.SetWindowOrg(0,0);
dc.SetMapMode(MM_TEXT);
pDC->BitBlt(rect.left, rect.top, rect.Width(), rect.Height(),
&dc, 0, 0, SRCCOPY);
dc.SelectObject(pOldBitmap);
}
}