org.geotools.swing.tool

Class ZoomInTool

Object

MapMouseAdapter

CursorTool

AbstractZoomTool

ZoomInTool

All Implemented Interfaces:

MapMouseListener

public class ZoomInTool
extends AbstractZoomTool

A cursor tool to zoom in the map pane display.

For mouse clicks, the display will be zoomed-in such that the map centre is the position of the mouse click and the map width and height are calculated as:

    len = len.old / z 

where z is the linear zoom increment (>= 1.0)

The tool also responds to the user drawing a box on the map mapPane with mouse click-and-drag to define the zoomed-in area.

Since:

2.6

Author:

Michael Bedward

Field Summary

Fields

Modifier and Type	Field and Description
static Point	CURSOR_HOTSPOT Cursor hotspot coordinates
static String	CURSOR_IMAGE Cursor
static String	ICON_IMAGE Icon for the control
static String	TOOL_NAME Tool name
static String	TOOL_TIP Tool tip text

Fields inherited from class AbstractZoomTool

DEFAULT_ZOOM_FACTOR, zoom

Constructor Summary

Constructors

Constructor and Description
ZoomInTool() Constructor

Method Summary

Modifier and Type	Method and Description
boolean	drawDragBox() Returns true to indicate that this tool draws a box on the map display when the mouse is being dragged to show the zoom-in area
Cursor	getCursor() Get the mouse cursor for this tool
void	onMouseClicked(MapMouseEvent e) Zoom in by the currently set increment, with the map centred at the location (in world coords) of the mouse click
void	onMouseDragged(MapMouseEvent ev) Records that the mouse is being dragged
void	onMousePressed(MapMouseEvent ev) Records the map position of the mouse event in case this button press is the beginning of a mouse drag
void	onMouseReleased(MapMouseEvent ev) If the mouse was dragged, determines the bounds of the box that the user defined and passes this to the mapPane's setDisplayArea method.

Methods inherited from class AbstractZoomTool

getZoom, setZoom

Methods inherited from class CursorTool

getMapPane, setMapPane

Methods inherited from class MapMouseAdapter

onMouseEntered, onMouseExited, onMouseMoved, onMouseWheelMoved

Methods inherited from class Object

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

Field Detail

TOOL_NAME

public static final String TOOL_NAME

Tool name

TOOL_TIP

public static final String TOOL_TIP

Tool tip text

CURSOR_IMAGE

public static final String CURSOR_IMAGE

Cursor

See Also:

Constant Field Values

CURSOR_HOTSPOT

public static final Point CURSOR_HOTSPOT

Cursor hotspot coordinates

ICON_IMAGE

public static final String ICON_IMAGE

Icon for the control

See Also:

Constant Field Values

Constructor Detail

ZoomInTool

public ZoomInTool()

Constructor

Method Detail

onMouseClicked

public void onMouseClicked(MapMouseEvent e)

Zoom in by the currently set increment, with the map centred at the location (in world coords) of the mouse click

Specified by:

onMouseClicked in interface MapMouseListener

Overrides:

onMouseClicked in class MapMouseAdapter

Parameters:

e - map mapPane mouse event

onMousePressed

public void onMousePressed(MapMouseEvent ev)

Records the map position of the mouse event in case this button press is the beginning of a mouse drag

Specified by:

onMousePressed in interface MapMouseListener

Overrides:

onMousePressed in class MapMouseAdapter

Parameters:

ev - the mouse event

onMouseDragged

public void onMouseDragged(MapMouseEvent ev)

Records that the mouse is being dragged

Specified by:

onMouseDragged in interface MapMouseListener

Overrides:

onMouseDragged in class MapMouseAdapter

Parameters:

ev - the mouse event

onMouseReleased

public void onMouseReleased(MapMouseEvent ev)

If the mouse was dragged, determines the bounds of the box that the user defined and passes this to the mapPane's setDisplayArea method.

Specified by:

onMouseReleased in interface MapMouseListener

Overrides:

onMouseReleased in class MapMouseAdapter

Parameters:

ev - the mouse event

getCursor

public Cursor getCursor()

Get the mouse cursor for this tool

Overrides:

getCursor in class CursorTool

Returns:

the default cursor

drawDragBox

public boolean drawDragBox()

Returns true to indicate that this tool draws a box on the map display when the mouse is being dragged to show the zoom-in area

Overrides:

drawDragBox in class CursorTool

Returns:

true if this tool supports drawing a drag-box on the map; false otherwise