LabelWidget Class Reference

The LabelWidget JavaScript class. A floating Label display widget. More...

Additional Inherited Members
Public Slots inherited from WidgetBase
Attribute *	data (int index=0)
void	updateProperties (QScriptValue properties)
Signals inherited from WidgetBase
void	dragStarted (QScriptValue dragContext)
	signal called on mouse down when picking this widget with the Transform tool More...
void	drag (QScriptValue dragContext)
	signal called when this widget is dragged with the Transform tool More...
void	dragEnded ()
	signal called on mouse up after having manipulated this widget with the Transform tool More...

Detailed Description

The LabelWidget JavaScript class. A floating Label display widget.

This widget must be linked to a POSITION_2D attribute and a STRING attribute. This is a display widget, it has no manipulator. The label text is updated dynamically, following the attribute value..

The following properties are supported by the widget:

Property	Type	Default Value	Description
data	[Position2D,String]		An array containing the Position 2D and the String Attribute
label	String	"text"	Label text
label_color	ColorRGBA	255,255,255,255	Label foreground (text) color.
label_bg_color	ColorRGBA	0, 0, 0,128	Label background color. Accepts transparency values.
label_font	String	"Arial"	Label font name.
label_size	float	10.0	Label font size, in points.
label_pos	Point2d	Point2d(0,0)	Label position, in fields.
label_justify	String	"Left"	Horizontal label text alignment ("Left"/"Center").
label_screenspace	bool	true	Forces the label size to remain constant relative to screen.
label_screenspace_offset	Point2d	Point2d(0,0)	Label position offset, in screen space.

The following components constitute the widget:

Component	Type
attribute	[POSITION_2D,STRING]
drag_manipulator	-
painter	LABEL
picker	-
local_transformation	-

Create this widget to add a floating Master Controller in the camera view:

Controller.onShowControl = function()
{
  MessageLog.trace("\n\n\n");
  MessageLog.trace(" ---------------------------------------------------------------------------");
  MessageLog.trace("| Label Widget Test");
  MessageLog.trace(" ---------------------------------------------------------------------------");
  
  var posAttr = node.getAttr(Controller.node, frame.current(), "widget_pos");
  var txtAttr = node.getAttr(Controller.node, frame.current(), "label");
  var mcColor = node.getAttr(Controller.node, frame.current(), "widget_color").colorValueAt(frame.current());
  var mcSize  = node.getAttr(Controller.node, frame.current(), "widget_size").doubleValue();
  var mcSliderLen = 3.0;
  var val_label_screen_space = node.getAttr(Controller.node, frame.current(), "label_screen_space").boolValue();
  var val_label_font         = node.getAttr(Controller.node, frame.current(), "label_font").textValue();
  var val_label_size         = node.getAttr(Controller.node, frame.current(), "label_size").doubleValue();
  var val_label_color        = node.getAttr(Controller.node, frame.current(), "label_color").colorValueAt(frame.current());
  var val_label_bg_color     = node.getAttr(Controller.node, frame.current(), "label_bg_color").colorValueAt(frame.current());
  
  var mcNameCapture = Controller.node;
  
  var labelWidget = new LabelWidget(
  {
    data: [posAttr,txtAttr],
    screen_space : false,
    label : "myLabelText",
    label_color : val_label_color,
    label_bg_color : val_label_bg_color,
    label_font : val_label_font,
    label_size : val_label_size,
    label_pos : Point2d(0,0),
    label_justify : "Center",
    label_screenspace : val_label_screen_space
  } );
  
  Controller.controls = [labelWidget];
  MessageLog.trace("Done.");
}

Make sure to setup the Master Controller node specifications properly. e.g.

<attributes>
<attr type="2DPOSITION" name="widget_pos" value="0,0" tooltip="Master Controller text position."/>
<attr type="BOOL"   name="label_screen_space"  value="false"           tooltip="Check this options for the label size to be in screen space."/>
<attr type="STRING" name="label"               value="myLabelText"     tooltip="Master Controller label."/>
<attr type="STRING" name="label_font"          value="Arial "          tooltip="Label font."/>
<attr type="DOUBLE" name="label_size"          value="18.0"            tooltip="Label font size, in points."/>
<attr type="COLOUR" name="label_color "        value="255,255,255"     tooltip="Label color."/>
<attr type="COLOUR" name="label_bg_color"      value="0,0,0,128"       tooltip="Label background color."/>
</attributes>