Package 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 Details

    • 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:

    • 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:

  • Constructor Details

    • ZoomInTool

      public ZoomInTool()
      Constructor

  • Method Details

    • 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