Package com.mxgraph.shape

Class mxCurveLabelShape

  • All Implemented Interfaces:
    mxITextShape
    public class mxCurveLabelShape
extends java.lang.Object
implements mxITextShape
    Draws the edge label along a curve derived from the curve describing the edge's path

    • Field Detail

      • lastValue

        protected java.lang.String lastValue
        Cache of the label text

      • lastFont

        protected java.awt.Font lastFont
        Cache of the label font

      • lastPoints

        protected java.util.List<mxPoint> lastPoints
        Cache of the last set of guide points that this label was calculated for

      • curve

        protected mxCurve curve
        Cache of the points between which drawing straight lines views as a curve

      • state

        protected mxCellState state
        Cache the state associated with this shape

      • labelGlyphs

        protected mxCurveLabelShape.LabelGlyphCache[] labelGlyphs
        Cache of information describing characteristics relating to drawing each glyph of this label

      • labelSize

        protected double labelSize
        Cache of the total length of the branch label

      • labelBounds

        protected mxRectangle labelBounds
        Cache of the bounds of the label

      • LABEL_BUFFER

        public static double LABEL_BUFFER
        Buffer at both ends of the label

      • CURVE_TEXT_STRETCH_FACTOR

        public static double CURVE_TEXT_STRETCH_FACTOR
        Factor by which text on the inside of curve is stretched

      • INVALID_GLYPH_BOUNDS

        public static mxRectangle INVALID_GLYPH_BOUNDS
        Indicates that a glyph does not have valid drawing bounds, usually because it is not visible

      • centerVisibleIndex

        public int centerVisibleIndex
        The index of the central glyph of the label that is visible

      • FONT_FRACTIONALMETRICS

        public static java.lang.Object FONT_FRACTIONALMETRICS
        Specifies if image aspect should be preserved in drawImage. Default is true.

      • rtlGlyphVectors

        public java.awt.font.GlyphVector[] rtlGlyphVectors
        Cache of BIDI glyph vectors

      • frc

        public static java.awt.font.FontRenderContext frc
        Shared FRC for font size calculations

      • rotationEnabled

        protected boolean rotationEnabled

    • Constructor Detail

    • Method Detail

      • getRotationEnabled

        public boolean getRotationEnabled()

      • setRotationEnabled

        public void setRotationEnabled​(boolean value)

      • updateLabelBounds

        public mxRectangle updateLabelBounds​(java.lang.String label,
                                     java.util.Map<java.lang.String,​java.lang.Object> style)
        Updates the cached position and size of each glyph in the edge label.
        Parameters:
        label - the entire string of the label.
        style - the edge style

      • postprocessGlyph

        protected void postprocessGlyph​(mxCurve curve,
                                java.lang.String label,
                                int j,
                                double currentPos)
        Hook for sub-classers to perform additional processing on each glyph
        Parameters:
        curve - The curve object holding the label curve
        label - the text label of the curve
        j - the index of the label
        currentPos - the distance along the label curve the glyph is

      • intersectsRect

        public boolean intersectsRect​(java.awt.Rectangle rect)
        Returns whether or not the rectangle passed in hits any part of this curve.
        Parameters:
        rect - the rectangle to detect for a hit
        Returns:
        whether or not the rectangle hits this curve

      • calculationLabelPosition

        protected void calculationLabelPosition​(java.util.Map<java.lang.String,​java.lang.Object> style,
                                        java.lang.String label)
        Hook method to override how the label is positioned on the curve
        Parameters:
        style - the style of the curve
        label - the string label to be displayed on the curve

      • getCurve

        public mxCurve getCurve()
        Returns:
        the curve

      • setCurve

        public void setCurve​(mxCurve curve)
        Parameters:
        curve - the curve to set

      • getCenterVisiblePosition

        public mxRectangle getCenterVisiblePosition()
        Returns the drawing bounds of the central indexed visible glyph
        Returns:
        the centerVisibleIndex