org.openstreetmap.josm.data.osm.visitor.paint
Class AbstractMapRenderer

java.lang.Object
  org.openstreetmap.josm.data.osm.visitor.paint.AbstractMapRenderer

All Implemented Interfaces:

Rendering

Direct Known Subclasses:

StyledMapRenderer, WireframeMapRenderer

public abstract class AbstractMapRenderer
extends java.lang.Object
implements Rendering

Abstract common superclass for Rendering implementations.

Field Summary

protected java.awt.Color	backgroundColor Color Preference for background
protected java.awt.Graphics2D	g the graphics context to which the visitor renders OSM objects
protected java.awt.Color	highlightColor Color Preference for hightlighted objects
protected java.awt.Color	inactiveColor Color Preference for inactive objects
protected boolean	isInactiveMode if true, the paint visitor shall render OSM objects such that they look inactive.
protected NavigatableComponent	nc the map viewport - provides projection and hit detection functionality
protected java.awt.Color	nodeColor Color Preference for nodes
protected int	segmentNumberSpace Preference: minimum space (displayed way length) to display segment numbers
protected java.awt.Color	selectedColor Color Preference for selected objects
protected int	virtualNodeSize Preference: size of virtual nodes (0 displayes display)
protected int	virtualNodeSpace Preference: minimum space (displayed way length) to display virtual nodes

Constructor Summary

AbstractMapRenderer(java.awt.Graphics2D g, NavigatableComponent nc, boolean isInactiveMode)
Creates an abstract paint visitor

Method Summary

abstract void	drawNode(Node n, java.awt.Color color, int size, boolean fill) Draw the node as small rectangle with the given color.
protected void	drawOrderNumber(java.awt.Point p1, java.awt.Point p2, int orderNumber, java.awt.Color clr) Draw an number of the order of the two consecutive nodes within the parents way
void	drawVirtualNodes(DataSet data, BBox bbox) Draws virtual nodes.
void	getColors() Reads the color definitions from preferences.
protected void	getSettings(boolean virtual) Reads all the settings from preferences.
static boolean	isLargeSegment(java.awt.geom.Point2D p1, java.awt.geom.Point2D p2, int space) Checks if a way segemnt is large enough for additional information display.
protected boolean	isSegmentVisible(java.awt.Point p1, java.awt.Point p2) Checks if segment is visible in display.
void	visitVirtual(java.awt.geom.GeneralPath path, Way w) Creates path for drawing virtual nodes for one way.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.openstreetmap.josm.data.osm.visitor.paint.Rendering

render

Field Detail

g

protected java.awt.Graphics2D g

the graphics context to which the visitor renders OSM objects

nc

protected NavigatableComponent nc

the map viewport - provides projection and hit detection functionality

isInactiveMode

protected boolean isInactiveMode

if true, the paint visitor shall render OSM objects such that they look inactive. Example: rendering of data in an inactive layer using light gray as color only.

backgroundColor

protected java.awt.Color backgroundColor

Color Preference for background

inactiveColor

protected java.awt.Color inactiveColor

Color Preference for inactive objects

selectedColor

protected java.awt.Color selectedColor

Color Preference for selected objects

nodeColor

protected java.awt.Color nodeColor

Color Preference for nodes

highlightColor

protected java.awt.Color highlightColor

Color Preference for hightlighted objects

virtualNodeSize

protected int virtualNodeSize

Preference: size of virtual nodes (0 displayes display)

virtualNodeSpace

protected int virtualNodeSpace

Preference: minimum space (displayed way length) to display virtual nodes

segmentNumberSpace

protected int segmentNumberSpace

Preference: minimum space (displayed way length) to display segment numbers

Constructor Detail

AbstractMapRenderer

public AbstractMapRenderer(java.awt.Graphics2D g,
                           NavigatableComponent nc,
                           boolean isInactiveMode)
                    throws java.lang.IllegalArgumentException

Creates an abstract paint visitor

Parameters:

g - the graphics context. Must not be null.

nc - the map viewport. Must not be null.

isInactiveMode - if true, the paint visitor shall render OSM objects such that they look inactive. Example: rendering of data in an inactive layer using light gray as color only.

Throws:

java.lang.IllegalArgumentException - thrown if g is null

java.lang.IllegalArgumentException - thrown if nc is null

Method Detail

drawNode

public abstract void drawNode(Node n,
                              java.awt.Color color,
                              int size,
                              boolean fill)

Draw the node as small rectangle with the given color.

Parameters:

n - The node to draw.

color - The color of the node.

drawOrderNumber

protected void drawOrderNumber(java.awt.Point p1,
                               java.awt.Point p2,
                               int orderNumber,
                               java.awt.Color clr)

Draw an number of the order of the two consecutive nodes within the parents way

Parameters:

p1 - First point of the way segment.

p2 - Second point of the way segment.

orderNumber - The number of the segment in the way.

drawVirtualNodes

public void drawVirtualNodes(DataSet data,
                             BBox bbox)

Draws virtual nodes.

Parameters:

data - The data set being rendered.

bbox - The bounding box being displayed.

getColors

public void getColors()

Reads the color definitions from preferences. This function is public, so that color names in preferences can be displayed even without calling the wireframe display before.

getSettings

protected void getSettings(boolean virtual)

Reads all the settings from preferences. Calls the @{link #getColors} function.

Parameters:

virtual - true if virtual nodes are used

isLargeSegment

public static boolean isLargeSegment(java.awt.geom.Point2D p1,
                                     java.awt.geom.Point2D p2,
                                     int space)

Checks if a way segemnt is large enough for additional information display.

Parameters:

p1 - First point of the way segment.

p2 - Second point of the way segment.

space - The free space to check against.

Returns:

true if segment is larger than required space

isSegmentVisible

protected boolean isSegmentVisible(java.awt.Point p1,
                                   java.awt.Point p2)

Checks if segment is visible in display.

Parameters:

p1 - First point of the way segment.

p2 - Second point of the way segment.

Returns:

true if segment is visible.

visitVirtual

public void visitVirtual(java.awt.geom.GeneralPath path,
                         Way w)

Creates path for drawing virtual nodes for one way.

Parameters:

path - The path to append drawing to.

w - The ways to draw node for.