maptoolbase.cpp

在vc环境下

// MapToolBase.cpp: implementation of the CMapToolBase class.
//
//////////////////////////////////////////////////////////////////////

#include "stdafx.h"
#include "MapToolBase.h"

//////////////////////////////////////////////////////////////////////
// Construction/Destruction
CMapToolBase::CMapToolBase(
  WORD wBitmapID,
  UINT caption,
  UINT category,
  UINT tooltip,
  UINT message,
  UINT helpfile,
  LONG helpID,
  UINT cursorID,
  UINT cursorMoveID ) :
    CMapCommandBase(wBitmapID, caption, category, tooltip, message, helpfile, helpID),
    m_hCursor(0),
    m_hCursorMove(0),
    m_bMouseDown(false)
{
  if (cursorID)
    m_hCursor = (HCURSOR) ::LoadImage(_AtlBaseModule.GetResourceInstance(), MAKEINTRESOURCE(cursorID),
      IMAGE_CURSOR, 0, 0, LR_DEFAULTSIZE);

  if (cursorMoveID)
    m_hCursorMove = (HCURSOR) ::LoadImage(_AtlBaseModule.GetResourceInstance(), MAKEINTRESOURCE(cursorMoveID),
      IMAGE_CURSOR, 0, 0, LR_DEFAULTSIZE);
  else if (cursorID !=0)
    m_hCursorMove = m_hCursor; // if no move cursor supplied use the normal cursor
 
}


CMapToolBase::~CMapToolBase()
{
  if (m_hCursor!=0)
    ::DestroyCursor(m_hCursor);


  if ((m_hCursorMove!=0) && (m_hCursor != m_hCursorMove))
    ::DestroyCursor(m_hCursorMove);

  m_hCursor = 0;
  m_hCursorMove = 0;
}

STDMETHODIMP CMapToolBase::get_Cursor(OLE_HANDLE * Cursor)
{
  if (Cursor == NULL)
    return E_POINTER;

  if (m_bMouseDown)  
    *Cursor = (OLE_HANDLE)m_hCursorMove;
  else
    *Cursor = (OLE_HANDLE)m_hCursor;
  
  return S_OK;
}

STDMETHODIMP CMapToolBase::OnMouseDown(LONG Button, LONG Shift, LONG X, LONG Y)
{

  return S_OK;
}

STDMETHODIMP CMapToolBase::OnMouseMove(LONG Button, LONG Shift, LONG X, LONG Y)
{
  return S_OK;
}


STDMETHODIMP CMapToolBase::OnMouseUp(LONG Button, LONG Shift, LONG X, LONG Y)
{

  return S_OK;
}


STDMETHODIMP CMapToolBase::OnDblClick()
{
  return S_OK;
}


STDMETHODIMP CMapToolBase::OnKeyDown(LONG keyCode, LONG Shift)
{
  return S_OK;
}

STDMETHODIMP CMapToolBase::OnKeyUp(LONG keyCode, LONG Shift)
{
  return S_OK;
}

STDMETHODIMP CMapToolBase::OnContextMenu(LONG X, LONG Y, VARIANT_BOOL * handled)
{
  return S_OK;
}

STDMETHODIMP CMapToolBase::Refresh(OLE_HANDLE hDC)
{
  return S_OK;
}


STDMETHODIMP CMapToolBase::Deactivate(VARIANT_BOOL * complete)
{
  *complete = VARIANT_TRUE;
  return S_OK;
}


///////////////////////////////////////////////////////////////////
//
HRESULT CMapToolBase::SetFocusMap(LONG X, LONG Y)
{
  HRESULT hr;
  IActiveViewPtr cpActiveView;
  m_hookHelper.get_ActiveView(&cpActiveView);
  IPageLayoutPtr cpPageLayout(cpActiveView);
  if (cpPageLayout != 0 && cpActiveView!=0)
  {
    IPointPtr cpPoint;
    IScreenDisplayPtr cpScreenDisplay;
    IDisplayTransformationPtr cpDisplayTrans;
    IMapPtr cpHitMap;

    hr = cpActiveView->get_ScreenDisplay(&cpScreenDisplay);
    if (cpScreenDisplay)
      hr = cpScreenDisplay->get_DisplayTransformation(&cpDisplayTrans);

    if (cpDisplayTrans)
      hr = cpDisplayTrans->ToMapPoint(X, Y, &cpPoint);

    if (cpPoint)
      hr = cpActiveView->HitTestMap(cpPoint, &cpHitMap);

    if (cpHitMap != 0)
    {
      IMapPtr cpOldMap;
      hr = cpActiveView->get_FocusMap(&cpOldMap);
      if (cpOldMap != cpHitMap)
      {
        // Clicked on a differnt map, change the focus map
        hr = cpActiveView->putref_FocusMap(cpHitMap);
		cpActiveView->PartialRefresh(esriViewGraphics,0,0);
      }
    }
    else
      hr = S_FALSE; // Didn't hit a map

  }
  else
    hr = S_OK; // Not a page layout, so focus map does not apply

  return hr;
}


bool CMapToolBase::MouseDown(LONG X, LONG Y)
{
  m_bMouseDown = false;

  // Update focus map to the place thats clicked on
  HRESULT hr = SetFocusMap(X, Y);
  if (hr == S_FALSE || FAILED(hr))
    return false;

  m_bMouseDown = true;

  HCURSOR hCur;
  get_Cursor((OLE_HANDLE*) &hCur);
  ::SetCursor(hCur);

  // Capture all mouse events outside the window while mouse is down
  HWND hWnd;
  m_hookHelper.get_hWnd(&hWnd);
  ::SetCapture(hWnd);

  return true;
}

void CMapToolBase::MouseUp()
{
  m_bMouseDown  = false;

  HCURSOR hCur;
  get_Cursor((OLE_HANDLE*) &hCur);
  ::SetCursor(hCur);

  // Release the capture
  HWND hWnd;
  m_hookHelper.get_hWnd(&hWnd);
  if (::GetCapture() == hWnd)
    ::ReleaseCapture();
}