doc.cpp

来自「Wxpython Implemented on Windows CE, Sou」· C++ 代码 · 共 623 行 · 第 1/2 页

      break;
    }
    case OGLEDIT_EDIT_LABEL:
    {
      if (shape)
      {
        MyEvtHandler *myHandler = (MyEvtHandler *)shape->GetEventHandler();
        wxString oldLabel(myHandler->label);
        myHandler->label = shapeLabel;
        shapeLabel = oldLabel;

        wxClientDC dc(shape->GetCanvas());
        shape->GetCanvas()->PrepareDC(dc);

        shape->FormatText(dc, /* (char*) (const char*) */ myHandler->label);
        shape->Draw(dc);

        doc->Modify(true);
        doc->UpdateAllViews();
      }

      break;
    }
  }
  return true;
}

bool DiagramCommand::Undo(void)
{
  switch (cmd)
  {
    case wxID_CUT:
    {
      if (shape)
      {
        doc->GetDiagram()->AddShape(shape);
        shape->Show(true);

        if (shape->IsKindOf(CLASSINFO(wxLineShape)))
        {
          wxLineShape *lineShape = (wxLineShape *)shape;

          fromShape->AddLine(lineShape, toShape);
        }
        if (selected)
          shape->Select(true);

        deleteShape = false;
      }
      doc->Modify(true);
      doc->UpdateAllViews();
      break;
    }
    case OGLEDIT_ADD_SHAPE:
    case OGLEDIT_ADD_LINE:
    {
      if (shape)
      {
        wxClientDC dc(shape->GetCanvas());
        shape->GetCanvas()->PrepareDC(dc);

        shape->Select(false, &dc);
        doc->GetDiagram()->RemoveShape(shape);
        shape->Unlink();
        deleteShape = true;
      }
      doc->Modify(true);
      doc->UpdateAllViews();
      break;
    }
    case OGLEDIT_CHANGE_BACKGROUND_COLOUR:
    {
      if (shape)
      {
        wxClientDC dc(shape->GetCanvas());
        shape->GetCanvas()->PrepareDC(dc);

        const wxBrush *oldBrush = shape->GetBrush();
        shape->SetBrush(shapeBrush);
        shapeBrush = oldBrush;
        shape->Draw(dc);

        doc->Modify(true);
        doc->UpdateAllViews();
      }
      break;
    }
    case OGLEDIT_EDIT_LABEL:
    {
      if (shape)
      {
        MyEvtHandler *myHandler = (MyEvtHandler *)shape->GetEventHandler();
        wxString oldLabel(myHandler->label);
        myHandler->label = shapeLabel;
        shapeLabel = oldLabel;

        wxClientDC dc(shape->GetCanvas());
        shape->GetCanvas()->PrepareDC(dc);

        shape->FormatText(dc, /* (char*) (const char*) */ myHandler->label);
        shape->Draw(dc);

        doc->Modify(true);
        doc->UpdateAllViews();
      }

      break;
    }
  }
  return true;
}

// Remove each individual line connected to a shape by sending a command.
void DiagramCommand::RemoveLines(wxShape *shape)
{
  wxObjectList::compatibility_iterator node = shape->GetLines().GetFirst();
  while (node)
  {
    wxLineShape *line = (wxLineShape *)node->GetData();
    doc->GetCommandProcessor()->Submit(new DiagramCommand(_T("Cut"), wxID_CUT, doc, NULL, 0.0, 0.0, line->Selected(), line));

    node = shape->GetLines().GetFirst();
  }
}

/*
 * MyEvtHandler: an event handler class for all shapes
 */

void MyEvtHandler::OnLeftClick(double WXUNUSED(x), double WXUNUSED(y), int keys, int WXUNUSED(attachment))
{
  wxClientDC dc(GetShape()->GetCanvas());
  GetShape()->GetCanvas()->PrepareDC(dc);

  if (keys == 0)
  {
    // Selection is a concept the library knows about
    if (GetShape()->Selected())
    {
      GetShape()->Select(false, &dc);
      GetShape()->GetCanvas()->Redraw(dc); // Redraw because bits of objects will be are missing
    }
    else
    {
      // Ensure no other shape is selected, to simplify Undo/Redo code
      bool redraw = false;
      wxObjectList::compatibility_iterator node = GetShape()->GetCanvas()->GetDiagram()->GetShapeList()->GetFirst();
      while (node)
      {
        wxShape *eachShape = (wxShape *)node->GetData();
        if (eachShape->GetParent() == NULL)
        {
          if (eachShape->Selected())
          {
            eachShape->Select(false, &dc);
            redraw = true;
          }
        }
        node = node->GetNext();
      }
      GetShape()->Select(true, &dc);
      if (redraw)
        GetShape()->GetCanvas()->Redraw(dc);
    }
  }
  else if (keys & KEY_CTRL)
  {
    // Do something for CONTROL
  }
  else
  {
#if wxUSE_STATUSBAR
    wxGetApp().frame->SetStatusText(label);
#endif // wxUSE_STATUSBAR
  }
}

/*
 * Implement connection of two shapes by right-dragging between them.
 */

void MyEvtHandler::OnBeginDragRight(double x, double y, int WXUNUSED(keys), int attachment)
{
  // Force attachment to be zero for now. Eventually we can deal with
  // the actual attachment point, e.g. a rectangle side if attachment mode is on.
  attachment = 0;

  wxClientDC dc(GetShape()->GetCanvas());
  GetShape()->GetCanvas()->PrepareDC(dc);

  wxPen dottedPen(*wxBLACK, 1, wxDOT);
  dc.SetLogicalFunction(OGLRBLF);
  dc.SetPen(dottedPen);
  double xp, yp;
  GetShape()->GetAttachmentPosition(attachment, &xp, &yp);
  dc.DrawLine((long) xp, (long) yp, (long) x, (long) y);
  GetShape()->GetCanvas()->CaptureMouse();
}

void MyEvtHandler::OnDragRight(bool WXUNUSED(draw), double x, double y, int WXUNUSED(keys), int attachment)
{
  // Force attachment to be zero for now
  attachment = 0;

  wxClientDC dc(GetShape()->GetCanvas());
  GetShape()->GetCanvas()->PrepareDC(dc);

  wxPen dottedPen(*wxBLACK, 1, wxDOT);
  dc.SetLogicalFunction(OGLRBLF);
  dc.SetPen(dottedPen);
  double xp, yp;
  GetShape()->GetAttachmentPosition(attachment, &xp, &yp);
  dc.DrawLine((long) xp, (long) yp, (long) x, (long) y);
}

void MyEvtHandler::OnEndDragRight(double x, double y, int WXUNUSED(keys), int WXUNUSED(attachment))
{
  GetShape()->GetCanvas()->ReleaseMouse();
  MyCanvas *canvas = (MyCanvas *)GetShape()->GetCanvas();

  // Check if we're on an object
  int new_attachment;
  wxShape *otherShape = canvas->FindFirstSensitiveShape(x, y, &new_attachment, OP_DRAG_RIGHT);

  if (otherShape && !otherShape->IsKindOf(CLASSINFO(wxLineShape)))
  {
    canvas->view->GetDocument()->GetCommandProcessor()->Submit(
      new DiagramCommand(_T("wxLineShape"), OGLEDIT_ADD_LINE, (DiagramDocument *)canvas->view->GetDocument(), CLASSINFO(wxLineShape),
      0.0, 0.0, false, NULL, GetShape(), otherShape));
  }
}

void MyEvtHandler::OnEndSize(double WXUNUSED(x), double WXUNUSED(y))
{
  wxClientDC dc(GetShape()->GetCanvas());
  GetShape()->GetCanvas()->PrepareDC(dc);

  GetShape()->FormatText(dc, /* (char*) (const char*) */ label);
}

/*
 * Diagram
 */

#if wxUSE_PROLOGIO

bool MyDiagram::OnShapeSave(wxExprDatabase& db, wxShape& shape, wxExpr& expr)
{
  wxDiagram::OnShapeSave(db, shape, expr);
  MyEvtHandler *handler = (MyEvtHandler *)shape.GetEventHandler();
  expr.AddAttributeValueString(_T("label"), handler->label);
  return true;
}

bool MyDiagram::OnShapeLoad(wxExprDatabase& db, wxShape& shape, wxExpr& expr)
{
  wxDiagram::OnShapeLoad(db, shape, expr);
  wxChar *label = NULL;
  expr.AssignAttributeValue(_T("label"), &label);
  MyEvtHandler *handler = new MyEvtHandler(&shape, &shape, wxString(label));
  shape.SetEventHandler(handler);

  if (label)
    delete[] label;
  return true;
}

#endif

/*
 * New shapes
 */

IMPLEMENT_DYNAMIC_CLASS(wxRoundedRectangleShape, wxRectangleShape)

wxRoundedRectangleShape::wxRoundedRectangleShape(double w, double h):
 wxRectangleShape(w, h)
{
  // 0.3 of the smaller rectangle dimension
  SetCornerRadius((double) -0.3);
}

IMPLEMENT_DYNAMIC_CLASS(wxDiamondShape, wxPolygonShape)

wxDiamondShape::wxDiamondShape(double w, double h):
  wxPolygonShape()
{
  // wxPolygonShape::SetSize relies on the shape having non-zero
  // size initially.
  if (w == 0.0)
    w = 60.0;
  if (h == 0.0)
    h = 60.0;

  wxList *thePoints = new wxList;
  wxRealPoint *point = new wxRealPoint(0.0, (-h/2.0));
  thePoints->Append((wxObject*) point);

  point = new wxRealPoint((w/2.0), 0.0);
  thePoints->Append((wxObject*) point);

  point = new wxRealPoint(0.0, (h/2.0));
  thePoints->Append((wxObject*) point);

  point = new wxRealPoint((-w/2.0), 0.0);
  thePoints->Append((wxObject*) point);

  Create(thePoints);
}