Пример #1
0
/**
 * Creates a control from the given XMLNode as a child of the given
 * parent.
 *
 * @param form the WndForm object
 * @param LookUpTable The parent CallBackTable
 * @param node The XMLNode that represents the control
 * @param eDialogStyle The parent's dialog style
 */
static Window *
LoadChild(WndForm &form, ContainerWindow &parent, Color background_color,
          CallBackTableEntry *LookUpTable,
          XMLNode node, const DialogStyle eDialogStyle,
          int bottom_most=0)
{
  Window *window = NULL;

  // Determine name, coordinates, width, height
  // and caption of the control
  const TCHAR* Name = GetName(node);
  const TCHAR* Caption = GetCaption(node);
  RECT rc = parent.get_client_rect();
  ControlPosition pos = GetPosition(node, rc, bottom_most);
  if (!pos.no_scaling)
    pos.x = ScaleWidth(pos.x, eDialogStyle);

  ControlSize size = GetSize(node, rc, pos);
  if (!size.no_scaling)
    size.cx = ScaleWidth(size.cx, eDialogStyle);

  WindowStyle style;

  if (!StringToIntDflt(node.getAttribute(_T("Visible")), 1))
    style.hide();

  if (StringToIntDflt(node.getAttribute(_T("Border")), 0))
    style.border();

  bool advanced = _tcschr(Caption, _T('*')) != NULL;

  // PropertyControl (WndProperty)
  if (_tcscmp(node.getName(), _T("Edit")) == 0) {
    WndProperty *W;
    int CaptionWidth;
    bool ReadOnly;
    bool MultiLine;

    // Determine the width of the caption field
    CaptionWidth = StringToIntDflt(node.getAttribute(_T("CaptionWidth")), 0);

    if (Layout::ScaleSupported())
      CaptionWidth = Layout::Scale(CaptionWidth);

    CaptionWidth = ScaleWidth(CaptionWidth, eDialogStyle);

    // Determine whether the control is multiline or readonly
    MultiLine = StringToIntDflt(node.getAttribute(_T("MultiLine")), 0);
    ReadOnly = StringToIntDflt(node.getAttribute(_T("ReadOnly")), 0);

    // Load the event callback properties
    WndProperty::DataChangeCallback_t DataNotifyCallback =
      (WndProperty::DataChangeCallback_t)
      GetCallBack(LookUpTable, node, _T("OnDataNotify"));

    WindowControl::OnHelpCallback_t OnHelpCallback =
      (WindowControl::OnHelpCallback_t)
      GetCallBack(LookUpTable, node, _T("OnHelp"));

    // Create the Property Control
    style.control_parent();

    EditWindowStyle edit_style;
    if (ReadOnly)
      edit_style.read_only();
    else
      edit_style.tab_stop();

    if (is_embedded() || Layout::scale_1024 < 2048)
      /* sunken edge doesn't fit well on the tiny screen of an
         embedded device */
      edit_style.border();
    else
      edit_style.sunken_edge();

    if (MultiLine) {
      edit_style.multiline();
      edit_style.vscroll();
    }

    window = W = new WndProperty(parent, Caption,
                                 pos.x, pos.y, size.cx, size.cy,
                                 CaptionWidth, background_color,
                                 style, edit_style,
                                 DataNotifyCallback);

    // Set the fore- and background color
    LoadColors(*W, node);

    // Set the help function event callback
    W->SetOnHelpCallback(OnHelpCallback);

    // Load the help text
    W->SetHelpText(StringToStringDflt(node.getAttribute(_T("Help")), _T("")));

    // If the control has (at least) one DataField child control
    if (node.nChildNode(_T("DataField")) > 0){
      // -> Load the first DataField control
      DataField *data_field =
        LoadDataField(node.getChildNode(_T("DataField"), 0),
                      LookUpTable, eDialogStyle);

      if (data_field != NULL)
        // Tell the Property control about the DataField control
        W->SetDataField(data_field);
    }

  // ButtonControl (WndButton)
  } else if (_tcscmp(node.getName(), _T("Button")) == 0) {
    // Determine ClickCallback function
    WndButton::ClickNotifyCallback_t ClickCallback =
      (WndButton::ClickNotifyCallback_t)
      GetCallBack(LookUpTable, node, _T("OnClick"));

    // Create the ButtonControl

    ButtonWindowStyle bstyle(style);
    bstyle.tab_stop();
    bstyle.multiline();

    window = new WndButton(parent, Caption,
                           pos.x, pos.y, size.cx, size.cy,
                           bstyle, ClickCallback);

  } else if (_tcscmp(node.getName(), _T("CheckBox")) == 0) {
    // Determine ClickCallback function
    CheckBoxControl::ClickNotifyCallback_t ClickCallback =
      (CheckBoxControl::ClickNotifyCallback_t)
      GetCallBack(LookUpTable, node, _T("OnClick"));

    // Create the CheckBoxControl

    style.tab_stop();

    window = new CheckBoxControl(parent, Caption,
                                 pos.x, pos.y, size.cx, size.cy,
                                 style,
                                 ClickCallback);

  // SymbolButtonControl (WndSymbolButton) not used yet
  } else if (_tcscmp(node.getName(), _T("SymbolButton")) == 0) {
    // Determine ClickCallback function
    WndButton::ClickNotifyCallback_t ClickCallback =
      (WndButton::ClickNotifyCallback_t)
      GetCallBack(LookUpTable, node, _T("OnClick"));

    // Create the SymbolButtonControl

    style.tab_stop();

    window = new WndSymbolButton(parent, Caption,
                                 pos.x, pos.y, size.cx, size.cy,
                                 style, background_color,
                                 ClickCallback);

  // PanelControl (WndPanel)
  } else if (_tcscmp(node.getName(), _T("Panel")) == 0) {
    // Create the PanelControl

    style.control_parent();

    PanelControl *frame = new PanelControl(parent,
                                           pos.x, pos.y, size.cx, size.cy,
                                           background_color, style);

    window = frame;

    // Load children controls from the XMLNode
    LoadChildrenFromXML(form, *frame, background_color,
                        LookUpTable, &node, eDialogStyle);

  // KeyboardControl
  } else if (_tcscmp(node.getName(), _T("Keyboard")) == 0) {
    KeyboardControl::OnCharacterCallback_t CharacterCallback =
      (KeyboardControl::OnCharacterCallback_t)
      GetCallBack(LookUpTable, node, _T("OnCharacter"));

    // Create the KeyboardControl
    KeyboardControl *kb =
      new KeyboardControl(parent,
                          pos.x, pos.y, size.cx, size.cy, background_color,
                          CharacterCallback, style);

    window = kb;
  // DrawControl (WndOwnerDrawFrame)
  } else if (_tcscmp(node.getName(), _T("Canvas")) == 0) {
    // Determine DrawCallback function
    WndOwnerDrawFrame::OnPaintCallback_t PaintCallback =
      (WndOwnerDrawFrame::OnPaintCallback_t)
      GetCallBack(LookUpTable, node, _T("OnPaint"));

    // Create the DrawControl
    WndOwnerDrawFrame* canvas =
      new WndOwnerDrawFrame(parent,
                            pos.x, pos.y, size.cx, size.cy,
                              style, PaintCallback);

    window = canvas;

  // FrameControl (WndFrame)
  } else if (_tcscmp(node.getName(), _T("Label")) == 0){
    // Create the FrameControl
    WndFrame* frame = new WndFrame(parent,
                                   pos.x, pos.y, size.cx, size.cy,
                                   background_color, style);

    // Set the caption
    frame->SetCaption(Caption);

    window = frame;

  // ListBoxControl (WndListFrame)
  } else if (_tcscmp(node.getName(), _T("List")) == 0){
    // Determine ItemHeight of the list items
    unsigned item_height =
      Layout::Scale(StringToIntDflt(node.getAttribute(_T("ItemHeight")), 18));

    // Create the ListBoxControl

    style.tab_stop();

    if (is_embedded() || Layout::scale_1024 < 2048)
      /* sunken edge doesn't fit well on the tiny screen of an
         embedded device */
      style.border();
    else
      style.sunken_edge();

    window = new WndListFrame(parent,
                              pos.x, pos.y, size.cx, size.cy,
                              style,
                              item_height);

  // TabControl (Tabbed)
  } else if (_tcscmp(node.getName(), _T("Tabbed")) == 0) {
    // Create the TabControl

    style.control_parent();

    TabbedControl *tabbed = new TabbedControl(parent,
                                              pos.x, pos.y, size.cx, size.cy,
                                              style);

    window = tabbed;

    const unsigned n = node.nChildNode();
    for (unsigned i = 0; i < n; ++i) {
      // Load each child control from the child nodes
      Window *child = LoadChild(form, *tabbed, background_color,
                                LookUpTable,
                                node.getChildNode(i), eDialogStyle);
      if (child != NULL)
        tabbed->AddClient(child);
        continue;
    }
  } else if (_tcscmp(node.getName(), _T("Custom")) == 0) {
    // Create a custom Window object with a callback
    CreateWindowCallback_t create =
        (CreateWindowCallback_t)GetCallBack(LookUpTable, node, _T("OnCreate"));
    if (create == NULL)
      return NULL;

    window = create(parent,
                    pos.x, pos.y, size.cx, size.cy, style);
  }

  if (window != NULL) {
    if (!string_is_empty(Name))
      form.AddNamed(Name, window);

    if (advanced)
      form.AddAdvanced(window);

    form.AddDestruct(window);
  }

  return window;
}