org.jgraph.graph
Class VertexRenderer
public
class
VertexRenderer
extends JLabel
implements CellViewRenderer, Serializable
This renderer displays entries that implement the CellView interface and
supports the following attributes. If the cell view is not a leaf, this
object is only visible if it is selected.
GraphConstants.BOUNDS GraphConstants.ICON GraphConstants.FONT
GraphConstants.OPAQUE GraphConstants.BORDER GraphConstants.BORDERCOLOR
GraphConstants.LINEWIDTH GraphConstants.FOREGROUND GraphConstants.BACKGROUND
GraphConstants.VERTICAL_ALIGNMENT GraphConstants.HORIZONTAL_ALIGNMENT
GraphConstants.VERTICAL_TEXT_POSITION GraphConstants.HORIZONTAL_TEXT_POSITION
Field Summary |
protected Color | bordercolor Cached default foreground and default background. |
protected int | borderWidth Cached borderwidth. |
protected boolean | childrenSelected Cached hasFocus and selected value. |
protected Color | defaultBackground Cached default foreground and default background. |
protected Color | defaultForeground Cached default foreground and default background. |
protected Color | gradientColor
Caches values of the colors to be used for painting the cell. |
protected Color | gridColor
Caches values of the colors to be used for painting the cell. |
protected boolean | hasFocus Cached hasFocus and selected value. |
protected Color | highlightColor
Caches values of the colors to be used for painting the cell. |
protected boolean | isDoubleBuffered Cached value of the double buffered state |
protected boolean | labelEnabled Cached value of whether the label is to be displayed |
protected Color | lockedHandleColor
Caches values of the colors to be used for painting the cell. |
protected boolean | preview Cached hasFocus and selected value. |
protected boolean | selected Cached hasFocus and selected value. |
protected VertexView | view Cache the current shape for drawing. |
Method Summary |
protected void | firePropertyChange(String propertyName, Object oldValue, Object newValue)
Overridden for performance reasons. |
void | firePropertyChange(String propertyName, byte oldValue, byte newValue)
Overridden for performance reasons. |
void | firePropertyChange(String propertyName, char oldValue, char newValue)
Overridden for performance reasons. |
void | firePropertyChange(String propertyName, short oldValue, short newValue)
Overridden for performance reasons. |
void | firePropertyChange(String propertyName, int oldValue, int newValue)
Overridden for performance reasons. |
void | firePropertyChange(String propertyName, long oldValue, long newValue)
Overridden for performance reasons. |
void | firePropertyChange(String propertyName, float oldValue, float newValue)
Overridden for performance reasons. |
void | firePropertyChange(String propertyName, double oldValue, double newValue)
Overridden for performance reasons. |
void | firePropertyChange(String propertyName, boolean oldValue, boolean newValue)
Overridden for performance reasons. |
Color | getGradientColor() |
Point2D | getPerimeterPoint(VertexView view, Point2D source, Point2D p)
Returns the intersection of the bounding rectangle and the straight line
between the source and the specified point p. |
Component | getRendererComponent(JGraph graph, CellView view, boolean sel, boolean focus, boolean preview)
Configure and return the renderer component based on the passed in cell.
|
protected void | installAttributes(CellView view)
Install the attributes of specified cell in this renderer instance. |
void | paint(Graphics g)
Paint the renderer. |
protected void | paintSelectionBorder(Graphics g)
Provided for subclassers to paint a selection border. |
void | repaint(long tm, int x, int y, int width, int height)
Overridden for performance reasons. |
void | repaint(Rectangle r)
Overridden for performance reasons. |
protected void | resetAttributes()
Hook for subclassers that is invoked when the installAttributes is not
called to reset all attributes to the defaults. |
void | revalidate()
Overridden for performance reasons. |
void | setGradientColor(Color gradientColor) |
void | validate()
Overridden for performance reasons. |
protected transient Color bordercolor
Cached default foreground and default background.
protected transient int borderWidth
Cached borderwidth.
protected transient boolean childrenSelected
Cached hasFocus and selected value.
protected transient Color defaultBackground
Cached default foreground and default background.
protected transient Color defaultForeground
Cached default foreground and default background.
protected transient Color gradientColor
Caches values of the colors to be used for painting the cell. The
values for gridColor, highlightColor and lockedHandleColor are updated
with the respective values from JGraph in getRendererComponent each
time a vertex is rendered. To render the selection border, the
highlightColor or the lockedHandleColor are used depending on the
focused state of the vertex. The gridColor is used to draw the
selection border if any child cells are selected. To change these
color values, please use the respective setters in JGraph.
protected transient Color gridColor
Caches values of the colors to be used for painting the cell. The
values for gridColor, highlightColor and lockedHandleColor are updated
with the respective values from JGraph in getRendererComponent each
time a vertex is rendered. To render the selection border, the
highlightColor or the lockedHandleColor are used depending on the
focused state of the vertex. The gridColor is used to draw the
selection border if any child cells are selected. To change these
color values, please use the respective setters in JGraph.
protected transient boolean hasFocus
Cached hasFocus and selected value.
protected transient Color highlightColor
Caches values of the colors to be used for painting the cell. The
values for gridColor, highlightColor and lockedHandleColor are updated
with the respective values from JGraph in getRendererComponent each
time a vertex is rendered. To render the selection border, the
highlightColor or the lockedHandleColor are used depending on the
focused state of the vertex. The gridColor is used to draw the
selection border if any child cells are selected. To change these
color values, please use the respective setters in JGraph.
protected transient boolean isDoubleBuffered
Cached value of the double buffered state
protected transient boolean labelEnabled
Cached value of whether the label is to be displayed
protected transient Color lockedHandleColor
Caches values of the colors to be used for painting the cell. The
values for gridColor, highlightColor and lockedHandleColor are updated
with the respective values from JGraph in getRendererComponent each
time a vertex is rendered. To render the selection border, the
highlightColor or the lockedHandleColor are used depending on the
focused state of the vertex. The gridColor is used to draw the
selection border if any child cells are selected. To change these
color values, please use the respective setters in JGraph.
protected transient boolean preview
Cached hasFocus and selected value.
protected transient boolean selected
Cached hasFocus and selected value.
Cache the current shape for drawing.
public VertexRenderer()
Constructs a renderer that may be used to render vertices.
protected void firePropertyChange(String propertyName, Object oldValue, Object newValue)
public void firePropertyChange(String propertyName, byte oldValue, byte newValue)
public void firePropertyChange(String propertyName, char oldValue, char newValue)
public void firePropertyChange(String propertyName, short oldValue, short newValue)
public void firePropertyChange(String propertyName, int oldValue, int newValue)
public void firePropertyChange(String propertyName, long oldValue, long newValue)
public void firePropertyChange(String propertyName, float oldValue, float newValue)
public void firePropertyChange(String propertyName, double oldValue, double newValue)
public void firePropertyChange(String propertyName, boolean oldValue, boolean newValue)
public Color getGradientColor()
Returns: Returns the gradientColor.
public Point2D getPerimeterPoint(
VertexView view, Point2D source, Point2D p)
Returns the intersection of the bounding rectangle and the straight line
between the source and the specified point p. The specified point is
expected not to intersect the bounds.
public Component getRendererComponent(
JGraph graph,
CellView view, boolean sel, boolean focus, boolean preview)
Configure and return the renderer component based on the passed in cell.
The value is typically set from messaging the graph with
convertValueToString
. We recommend you check the value's
class and throw an illegal argument exception if it's not correct.
Parameters: graph
the graph that that defines the rendering context. view
the cell view that should be rendered. sel
whether the object is selected. focus
whether the object has the focus. preview
whether we are drawing a preview.
Returns: the component used to render the value.
protected void installAttributes(
CellView view)
Install the attributes of specified cell in this renderer instance. This
means, retrieve every published key from the cells hashtable and set
global variables or superclass properties accordingly.
Parameters: view
the cell view to retrieve the attribute values from.
public void paint(Graphics g)
Paint the renderer. Overrides superclass paint to add specific painting.
protected void paintSelectionBorder(Graphics g)
Provided for subclassers to paint a selection border.
public void repaint(long tm, int x, int y, int width, int height)
public void repaint(Rectangle r)
protected void resetAttributes()
Hook for subclassers that is invoked when the installAttributes is not
called to reset all attributes to the defaults.
Subclassers must invoke the superclass implementation.
public void revalidate()
public void setGradientColor(Color gradientColor)
Parameters: gradientColor
The gradientColor to set.
public void validate()
Copyright (C) 2001-2009 JGraph Ltd. All rights reserved.