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## com.mxgraph.layout
Class mxCompactTreeLayout

    java.lang.Object
      com.mxgraph.layout.mxGraphLayout
          com.mxgraph.layout.mxCompactTreeLayout

All Implemented Interfaces:
  mxIGraphLayout

    public class mxCompactTreeLayout

extends mxGraphLayout

Nested Class Summary
`protected static class` | `mxCompactTreeLayout.Polygon`
`protected static class` | `mxCompactTreeLayout.Polyline`
`protected static class` | `mxCompactTreeLayout.TreeNode`

Field Summary
`protected boolean` | `horizontal` Specifies the orientation of the layout.
`protected boolean` | `invert` Specifies if edge directions should be inverted.
`protected int` | `levelDistance` Holds the levelDistance.
`protected boolean` | `moveTree` Specifies if the tree should be moved to the top, left corner if it is inside a top-level layer.
`protected int` | `nodeDistance` Holds the nodeDistance.
`protected boolean` | `resetEdges` Specifies if all edge points of traversed edges should be removed.
`protected boolean` | `resizeParent` If the parent should be resized to match the width/height of the tree.

Fields inherited from class com.mxgraph.layout.mxGraphLayout
`graph, useBoundingBox`

Constructor Summary
`mxCompactTreeLayout(mxGraph graph)`
`mxCompactTreeLayout(mxGraph graph, boolean horizontal)`
`mxCompactTreeLayout(mxGraph graph, boolean horizontal, boolean invert)`

Method Summary
`protected mxRectangle` | `apply(mxCompactTreeLayout.TreeNode node, mxRectangle bounds)`
`protected void` | `attachParent(mxCompactTreeLayout.TreeNode node, double height)`
`protected mxCompactTreeLayout.Polyline` | `bridge(mxCompactTreeLayout.Polyline line1, double x1, double y1, mxCompactTreeLayout.Polyline line2, double x2, double y2)`
`protected mxCompactTreeLayout.Polyline` | `createLine(double dx, double dy, mxCompactTreeLayout.Polyline next)`
`protected mxCompactTreeLayout.TreeNode` | `createNode(Object cell)`
`protected mxCompactTreeLayout.TreeNode` | `dfs(Object cell, Object parent, Set<Object> visited)` Does a depth first search starting at the specified cell.
`void` | `execute(Object parent)` Executes the layout for the children of the specified parent.
`void` | `execute(Object parent, Object root)` Implements .
`int` | `getLevelDistance()`
`int` | `getNodeDistance()`
`protected mxRectangle` | `horizontalLayout(mxCompactTreeLayout.TreeNode node, double x0, double y0, mxRectangle bounds)`
`boolean` | `isHorizontal()`
`boolean` | `isInvert()`
`boolean` | `isMoveTree()`
`boolean` | `isResetEdges()`
`boolean` | `isResizeParent()`
`boolean` | `isVertexIgnored(Object vertex)` Returns a boolean indicating if the given should be ignored as a vertex.
`protected double` | `join(mxCompactTreeLayout.TreeNode node)`
`protected void` | `layout(mxCompactTreeLayout.TreeNode node)` Starts the actual compact tree layout algorithm at the given node.
`protected void` | `layoutLeaf(mxCompactTreeLayout.TreeNode node)`
`protected double` | `merge(mxCompactTreeLayout.Polygon p1, mxCompactTreeLayout.Polygon p2)`
`protected void` | `moveNode(mxCompactTreeLayout.TreeNode node, double dx, double dy)` Moves the specified node and all of its children by the given amount.
`protected double` | `offset(double p1, double p2, double a1, double a2, double b1, double b2)`
`void` | `setHorizontal(boolean horizontal)`
`void` | `setInvert(boolean invert)`
`void` | `setLevelDistance(int levelDistance)`
`void` | `setMoveTree(boolean moveTree)`
`void` | `setNodeDistance(int nodeDistance)`
`void` | `setResetEdges(boolean resetEdges)`
`void` | `setResizeParent(boolean resizeParent)`
`protected mxRectangle` | `verticalLayout(mxCompactTreeLayout.TreeNode node, Object parent, double x0, double y0, mxRectangle bounds)`

Methods inherited from class com.mxgraph.layout.mxGraphLayout
`getConstraint, getConstraint, getGraph, getVertexBounds, isEdgeIgnored, isUseBoundingBox, isVertexMovable, moveCell, setEdgePoints, setEdgeStyleEnabled, setUseBoundingBox, setVertexLocation`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Field Detail

### horizontal

    protected boolean horizontal

  Specifies the orientation of the layout. Default is true.

### invert

    protected boolean invert

  Specifies if edge directions should be inverted. Default is false.

### resizeParent

    protected boolean resizeParent

  If the parent should be resized to match the width/height of the tree. Default is true.

### moveTree

    protected boolean moveTree

  Specifies if the tree should be moved to the top, left corner if it is inside a top-level layer. Default is true.

### resetEdges

    protected boolean resetEdges

  Specifies if all edge points of traversed edges should be removed. Default is true.

### levelDistance

    protected int levelDistance

  Holds the levelDistance. Default is 10.

### nodeDistance

    protected int nodeDistance

  Holds the nodeDistance. Default is 20.

Constructor Detail

### mxCompactTreeLayout

    public mxCompactTreeLayout(mxGraph graph)

Parameters:
  `graph` -

### mxCompactTreeLayout

    public mxCompactTreeLayout(mxGraph graph,
                               boolean horizontal)

Parameters:
  `graph` -
  `horizontal` -

### mxCompactTreeLayout

    public mxCompactTreeLayout(mxGraph graph,
                               boolean horizontal,
                               boolean invert)

Parameters:
  `graph` -
  `horizontal` -
  `invert` -

Method Detail

### isVertexIgnored

    public boolean isVertexIgnored(Object vertex)

  Returns a boolean indicating if the given should be ignored as a vertex. This returns true if the cell has no connections.

  Overrides:
    `isVertexIgnored` in class `mxGraphLayout`
  Parameters:
    `vertex` - Object that represents the vertex to be tested.
  Returns:
    Returns true if the vertex should be ignored.

### isHorizontal

    public boolean isHorizontal()

  Returns:
    the horizontal

### setHorizontal

    public void setHorizontal(boolean horizontal)

  Parameters:
    `horizontal` - the horizontal to set

### isInvert

    public boolean isInvert()

  Returns:
    the invert

### setInvert

    public void setInvert(boolean invert)

  Parameters:
    `invert` - the invert to set

### isResizeParent

    public boolean isResizeParent()

  Returns:
    the resizeParent

### setResizeParent

    public void setResizeParent(boolean resizeParent)

  Parameters:
    `resizeParent` - the resizeParent to set

### isMoveTree

    public boolean isMoveTree()

  Returns:
    the moveTree

### setMoveTree

    public void setMoveTree(boolean moveTree)

  Parameters:
    `moveTree` - the moveTree to set

### isResetEdges

    public boolean isResetEdges()

  Returns:
    the resetEdges

### setResetEdges

    public void setResetEdges(boolean resetEdges)

  Parameters:
    `resetEdges` - the resetEdges to set

### getLevelDistance

    public int getLevelDistance()

  Returns:
    the levelDistance

### setLevelDistance

    public void setLevelDistance(int levelDistance)

  Parameters:
    `levelDistance` - the levelDistance to set

### getNodeDistance

    public int getNodeDistance()

  Returns:
    the nodeDistance

### setNodeDistance

    public void setNodeDistance(int nodeDistance)

  Parameters:
    `nodeDistance` - the nodeDistance to set

### execute

    public void execute(Object parent)

  Description copied from interface: `mxIGraphLayout`
  Executes the layout for the children of the specified parent.

  Parameters:
    `parent` - Parent cell that contains the children to be layed out.

### execute

    public void execute(Object parent,
                        Object root)

  Implements . If the parent has any connected edges, then it is used as the root of the tree. Else, will be used to find a suitable root node within the set of children of the given parent.

### moveNode

    protected void moveNode(mxCompactTreeLayout.TreeNode node,
                            double dx,
                            double dy)

  Moves the specified node and all of its children by the given amount.

### dfs

    protected mxCompactTreeLayout.TreeNode dfs(Object cell,
                                               Object parent,
                                               Set<Object> visited)

  Does a depth first search starting at the specified cell. Makes sure the specified swimlane is never left by the algorithm.

### layout

    protected void layout(mxCompactTreeLayout.TreeNode node)

  Starts the actual compact tree layout algorithm at the given node.

### horizontalLayout

    protected mxRectangle horizontalLayout(mxCompactTreeLayout.TreeNode node,
                                           double x0,
                                           double y0,
                                           mxRectangle bounds)

### verticalLayout

    protected mxRectangle verticalLayout(mxCompactTreeLayout.TreeNode node,
                                         Object parent,
                                         double x0,
                                         double y0,
                                         mxRectangle bounds)

### attachParent

    protected void attachParent(mxCompactTreeLayout.TreeNode node,
                                double height)

### layoutLeaf

    protected void layoutLeaf(mxCompactTreeLayout.TreeNode node)

### join

    protected double join(mxCompactTreeLayout.TreeNode node)

### merge

    protected double merge(mxCompactTreeLayout.Polygon p1,
                           mxCompactTreeLayout.Polygon p2)

### offset

    protected double offset(double p1,
                            double p2,
                            double a1,
                            double a2,
                            double b1,
                            double b2)

### bridge

    protected mxCompactTreeLayout.Polyline bridge(mxCompactTreeLayout.Polyline line1,
                                                  double x1,
                                                  double y1,
                                                  mxCompactTreeLayout.Polyline line2,
                                                  double x2,
                                                  double y2)

### createNode

    protected mxCompactTreeLayout.TreeNode createNode(Object cell)

### apply

    protected mxRectangle apply(mxCompactTreeLayout.TreeNode node,
                                mxRectangle bounds)

### createLine

    protected mxCompactTreeLayout.Polyline createLine(double dx,
                                                      double dy,
                                                      mxCompactTreeLayout.Polyline next)

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Copyright (c) 2010 Gaudenz Alder. All rights reserved.