C++ CGUIControl::IsGroup方法代码示例

bool CGUIControlGroup::InsertControl(CGUIControl *control, const CGUIControl *insertPoint)
{
  // find our position
  for (unsigned int i = 0; i < m_children.size(); i++)
  {
    CGUIControl *child = m_children[i];
    if (child->IsGroup() && ((CGUIControlGroup *)child)->InsertControl(control, insertPoint))
      return true;
    else if (child == insertPoint)
    {
      AddControl(control, i);
      return true;
    }
  }
  return false;
}

// Note: This routine doesn't delete the control.  It just removes it from the control list
bool CGUIControlGroup::RemoveControl(const CGUIControl *control)
{
    for (iControls it = m_children.begin(); it != m_children.end(); ++it)
    {
        CGUIControl *child = *it;
        if (child->IsGroup() && ((CGUIControlGroup *)child)->RemoveControl(control))
            return true;
        if (control == child)
        {
            m_children.erase(it);
            RemoveLookup(child);
            return true;
        }
    }
    return false;
}

// in the case of id == 0, we don't match id
CGUIControl *CGUIControlGroup::GetFirstFocusableControl(int id)
{
  if (!CanFocus()) return NULL;
  if (id && id == (int) GetID()) return this; // we're focusable and they want us
  for (iControls it = m_children.begin(); it != m_children.end(); ++it)
  {
    CGUIControl* pControl = *it;
    if (pControl->IsGroup())
    {
      CGUIControlGroup *group = (CGUIControlGroup *)pControl;
      CGUIControl *control = group->GetFirstFocusableControl(id);
      if (control) return control;
    }
    if ((!id || (int) pControl->GetID() == id) && pControl->CanFocus())
      return pControl;
  }
  return NULL;
}

void CGUIWindow::LoadControl(TiXmlElement* pControl, CGUIControlGroup *pGroup)
{
  // get control type
  CGUIControlFactory factory;

  CRect rect(0, 0, (float)m_coordsRes.iWidth, (float)m_coordsRes.iHeight);
  if (pGroup)
  {
    rect.x1 = pGroup->GetXPosition();
    rect.y1 = pGroup->GetYPosition();
    rect.x2 = rect.x1 + pGroup->GetWidth();
    rect.y2 = rect.y1 + pGroup->GetHeight();
  }
  CGUIControl* pGUIControl = factory.Create(GetID(), rect, pControl);
  if (pGUIControl)
  {
    float maxX = pGUIControl->GetXPosition() + pGUIControl->GetWidth();
    if (maxX > m_width)
    {
      m_width = maxX;
    }

    float maxY = pGUIControl->GetYPosition() + pGUIControl->GetHeight();
    if (maxY > m_height)
    {
      m_height = maxY;
    }
    // if we are in a group, add to the group, else add to our window
    if (pGroup)
      pGroup->AddControl(pGUIControl);
    else
      AddControl(pGUIControl);
    // if the new control is a group, then add it's controls
    if (pGUIControl->IsGroup())
    {
      TiXmlElement *pSubControl = pControl->FirstChildElement("control");
      while (pSubControl)
      {
        LoadControl(pSubControl, (CGUIControlGroup *)pGUIControl);
        pSubControl = pSubControl->NextSiblingElement("control");
      }
    }
  }
}

// Note: This routine doesn't delete the control.  It just removes it from the control list
bool CGUIControlGroup::RemoveControl(int id)
{
  for (iControls it = m_children.begin(); it != m_children.end(); ++it)
  {
    CGUIControl *control = *it;
    if (control->IsGroup())
    {
      CGUIControlGroup *group = (CGUIControlGroup *)control;
      if (group->RemoveControl(id))
        return true;
    }
    if ((int) control->GetID() == id)
    {
      m_children.erase(it);
      return true;
    }
  }
  return false;
}

// returns true if the control group with id groupID has controlID as
// its focused control
bool CGUIWindow::ControlGroupHasFocus(int groupID, int controlID)
{
  // 1.  Run through and get control with groupID (assume unique)
  // 2.  Get it's selected item.
  CGUIControl *group = GetFirstFocusableControl(groupID);
  if (!group) group = (CGUIControl *)GetControl(groupID);

  if (group && group->IsGroup())
  {
    if (controlID == 0)
    { // just want to know if the group is focused
      return group->HasFocus();
    }
    else
    {
      CGUIMessage message(GUI_MSG_ITEM_SELECTED, GetID(), group->GetID());
      group->OnMessage(message);
      return (controlID == (int) message.GetParam1());
    }
  }
  return false;
}

void CGUIWindow::LoadControl(TiXmlElement* pControl, CGUIControlGroup *pGroup, const CRect &rect)
{
  // get control type
  CGUIControlFactory factory;

  CGUIControl* pGUIControl = factory.Create(GetID(), rect, pControl);
  if (pGUIControl)
  {
    float maxX = pGUIControl->GetXPosition() + pGUIControl->GetWidth();
    if (maxX > m_width)
    {
      m_width = maxX;
    }

    float maxY = pGUIControl->GetYPosition() + pGUIControl->GetHeight();
    if (maxY > m_height)
    {
      m_height = maxY;
    }
    // if we are in a group, add to the group, else add to our window
    if (pGroup)
      pGroup->AddControl(pGUIControl);
    else
      AddControl(pGUIControl);
    // if the new control is a group, then add it's controls
    if (pGUIControl->IsGroup())
    {
      CGUIControlGroup *grp = (CGUIControlGroup *)pGUIControl;
      TiXmlElement *pSubControl = pControl->FirstChildElement("control");
      CRect grpRect(grp->GetXPosition(), grp->GetYPosition(),
                    grp->GetXPosition() + grp->GetWidth(), grp->GetYPosition() + grp->GetHeight());
      while (pSubControl)
      {
        LoadControl(pSubControl, grp, grpRect);
        pSubControl = pSubControl->NextSiblingElement("control");
      }
    }
  }
}

void CGUIListItemLayout::LoadControl(TiXmlElement *child, CGUIControlGroup *group)
{
  if (!group) return;

  CRect rect(group->GetXPosition(), group->GetYPosition(), group->GetXPosition() + group->GetWidth(), group->GetYPosition() + group->GetHeight());

  CGUIControlFactory factory;
  CGUIControl *control = factory.Create(0, rect, child, true);  // true indicating we're inside a list for the
                                                                // different label control + defaults.
  if (control)
  {
    group->AddControl(control);
    if (control->IsGroup())
    {
      TiXmlElement *grandChild = child->FirstChildElement("control");
      while (grandChild)
      {
        LoadControl(grandChild, (CGUIControlGroup *)control);
        grandChild = grandChild->NextSiblingElement("control");
      }
    }
  }
}