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java.lang.Objectorg.geotools.swing.event.MapMouseAdapter
org.geotools.swing.tool.CursorTool
org.geotools.swing.tool.AbstractZoomTool
org.geotools.swing.tool.ZoomInTool
public class ZoomInTool
A zoom-in tool for JMapPane.
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.
Field Summary | |
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static java.awt.Point |
CURSOR_HOTSPOT
Cursor hotspot coordinates |
static java.lang.String |
CURSOR_IMAGE
Cursor |
static java.lang.String |
ICON_IMAGE
Icon for the control |
static java.lang.String |
TOOL_NAME
Tool name |
static java.lang.String |
TOOL_TIP
Tool tip text |
Fields inherited from class org.geotools.swing.tool.AbstractZoomTool |
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DEFAULT_ZOOM_FACTOR, zoom |
Constructor Summary | |
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ZoomInTool()
Constructor |
Method Summary | |
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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 |
java.awt.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 JMapPane.setDisplayArea(org.opengis.geometry.Envelope)
method |
Methods inherited from class org.geotools.swing.tool.AbstractZoomTool |
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getZoom, setZoom |
Methods inherited from class org.geotools.swing.tool.CursorTool |
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getMapPane, setMapPane |
Methods inherited from class org.geotools.swing.event.MapMouseAdapter |
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onMouseEntered, onMouseExited, onMouseMoved, onMouseWheelMoved |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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public static final java.lang.String TOOL_NAME
public static final java.lang.String TOOL_TIP
public static final java.lang.String CURSOR_IMAGE
public static final java.awt.Point CURSOR_HOTSPOT
public static final java.lang.String ICON_IMAGE
Constructor Detail |
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public ZoomInTool()
Method Detail |
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public void onMouseClicked(MapMouseEvent e)
onMouseClicked
in interface MapMouseListener
onMouseClicked
in class MapMouseAdapter
e
- map mapPane mouse eventpublic void onMousePressed(MapMouseEvent ev)
onMousePressed
in interface MapMouseListener
onMousePressed
in class MapMouseAdapter
ev
- the mouse eventpublic void onMouseDragged(MapMouseEvent ev)
onMouseDragged
in interface MapMouseListener
onMouseDragged
in class MapMouseAdapter
ev
- the mouse eventpublic void onMouseReleased(MapMouseEvent ev)
JMapPane.setDisplayArea(org.opengis.geometry.Envelope)
method
onMouseReleased
in interface MapMouseListener
onMouseReleased
in class MapMouseAdapter
ev
- the mouse eventpublic java.awt.Cursor getCursor()
getCursor
in class CursorTool
public boolean drawDragBox()
drawDragBox
in class CursorTool
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