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Elements

Classes


Class Label

JXG.CoordsElement,JXG.GeometryElement
   ↳ JXG.Text
         ↳ Label

Labels are text objects tied to other elements like points, lines and curves. Labels are handled internally by JSXGraph, only. There is NO constructor "board.create('label', ...)".

Defined in: text.js.
Extends JXG.Text.

Class Summary
Constructor Attributes Constructor Name and Description
 
Label()
Fields borrowed from class JXG.Text:
size
Fields borrowed from class JXG.GeometryElement:
_org_type, _pos, ancestors, baseElement, board, childElements, dash, descendants, draft, dragToTopOfLayer, dump, elementClass, elType, fillColor, fillOpacity, fixed, frozen, gradient, gradientAngle, gradientCX, gradientCY, gradientEndOffset, gradientFR, gradientFX, gradientFY, gradientR, gradientSecondColor, gradientSecondOpacity, gradientStartOffset, hasLabel, highlight, highlighted, highlightFillColor, highlightFillOpacity, highlightStrokeColor, highlightStrokeOpacity, highlightStrokeWidth, id, inherits, isDraggable, isReal, lastDragTime, methodMap, mouseover, name, needsRegularUpdate, needsUpdate, notExistingParents, numTraces, parents, precision, quadraticform, rendNode, scalable, shadow, snapToGrid, stdform, strokeColor, strokeOpacity, strokeWidth, subs, symbolic, tabindex, trace, traceAttributes, traces, transformations, transitionDuration, type, visible, visProp, visPropCalc, withLabel
Fields borrowed from class JXG.CoordsElement:
coords, groups, isConstrained, needsUpdateFromParent, onPolygon, slideObject, slideObjects
Field Summary
Field Attributes Field Name and Description
 
Automatic position of label text.
 
Label offset from label anchor.
 
Possible string values for the position of a label for label anchor points are:
  • 'lft'
  • 'rt'
  • 'top'
  • 'bot'
  • 'ulft'
  • 'urt'
  • 'llft'
  • 'lrt'
This is relevant for non-points: line, circle, curve.
Fields borrowed from class JXG.Text:
size
Fields borrowed from class JXG.GeometryElement:
_org_type, _pos, ancestors, baseElement, board, childElements, dash, descendants, draft, dragToTopOfLayer, dump, elementClass, elType, fillColor, fillOpacity, fixed, frozen, gradient, gradientAngle, gradientCX, gradientCY, gradientEndOffset, gradientFR, gradientFX, gradientFY, gradientR, gradientSecondColor, gradientSecondOpacity, gradientStartOffset, hasLabel, highlight, highlighted, highlightFillColor, highlightFillOpacity, highlightStrokeColor, highlightStrokeOpacity, highlightStrokeWidth, id, inherits, isDraggable, isReal, lastDragTime, methodMap, mouseover, name, needsRegularUpdate, needsUpdate, notExistingParents, numTraces, parents, precision, quadraticform, rendNode, scalable, shadow, snapToGrid, stdform, strokeColor, strokeOpacity, strokeWidth, subs, symbolic, tabindex, trace, traceAttributes, traces, transformations, transitionDuration, type, visible, visProp, visPropCalc, withLabel
Fields borrowed from class JXG.CoordsElement:
coords, groups, isConstrained, needsUpdateFromParent, onPolygon, slideObject, slideObjects
Methods borrowed from class JXG.Text:
_createFctUpdateText, _setText, checkForSizeUpdate, convertGeonext2CSS, convertGeonextAndSketchometry2CSS, convertSketchometry2CSS, crudeSizeEstimate, expandShortMath, generateTerm, getNumberofConflicts, getSize, hasPoint, notifyParents, replaceSub, replaceSup, setAutoPosition, setCoords, setText, setTextJessieCode, update, updateRenderer, updateSize, updateText, utf8_decode
Methods borrowed from class JXG.GeometryElement:
_set, addChild, addDescendants, addParents, addRotation, addTicks, addTransform, animate, bounds, clearTrace, cloneToBackground, countChildren, createGradient, createLabel, draggable, fullUpdate, generatePolynomial, getAttribute, getAttributes, getLabelAnchor, getName, getParents, getProperty, getSnapSizes, getTextAnchor, getType, handleSnapToGrid, hide, hideElement, labelColor, noHighlight, normalize, prepareUpdate, remove, removeAllTicks, removeChild, removeDescendants, removeTicks, resolveShortcuts, setArrow, setAttribute, setDash, setDisplayRendNode, setLabel, setLabelText, setName, setParents, setPosition, setPositionDirectly, setProperty, show, showElement, snapToPoints, updateVisibility
Methods borrowed from class JXG.CoordsElement:
_anim, addAnchor, addConstraint, Dist, free, handleAttractors, handleSnapToPoints, makeGlider, moveAlong, moveTo, popSlideObject, setGliderPosition, setPositionByTransform, updateConstraint, updateCoords, updateGlider, updateGliderFromParent, updateTransform, visit, X, XEval, Y, YEval, Z, ZEval
Events borrowed from class JXG.GeometryElement:
attribute, attribute:key, down, drag, mousedown, mousedrag, mousemove, mouseout, mouseover, mouseup, move, out, over, pendown, pendrag, penup, touchdown, touchdrag, touchup, up
Class Detail
Label()
Field Detail
{Boolean} autoPosition
Automatic position of label text. When called first, the positioning algorithm starts at the position defined by offset. The algorithm tries to find a position with the least number of overlappings with other elements, while retaining the distance to the anchor element.
Defined in: options.js.
	var p1 = board.create('point', [-2, 1], {id: 'A'});
	var p2 = board.create('point', [-0.85, 1], {
     name: 'B', id: 'B', label:{autoPosition: true, offset:[10, 10]}
 });
	var p3 = board.create('point', [-1, 1.2], {
     name: 'C', id: 'C', label:{autoPosition: true, offset:[10, 10]}
 });
 var c = board.create('circle', [p1, p2]);
	var l = board.create('line', [p1, p2]);


					
					

						
						
						
							
See:
Label#offset
Default Value:
false

{Array} offset
Label offset from label anchor. The label anchor is determined by Label#position
Defined in: options.js.
See:
Label#position
Default Value:
[10,10]

{String} position
Possible string values for the position of a label for label anchor points are: This is relevant for non-points: line, circle, curve. The names have been borrowed from MetaPost.
Defined in: options.js.
See:
Label#offset
Default Value:
'urt'