Package it.tidalwave.image.render

Class DragPanningController

  • public class DragPanningController
extends java.lang.Object
    This class activated panning-by-dragging, that is the capability of moving the photo in the viewport by dragging with the mouse.
    Author:
    Fabrizio Giudici

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      void centerImage()
      Centers the image on the screen, keeping the current scale.
      boolean isEnabled()
      Returns true if the controller is enabled.
      void setEnabled​(boolean enabled)
      Enables or disables this controller.

      • Methods inherited from class java.lang.Object

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

    • Constructor Detail

      • DragPanningController

        public DragPanningController​(EditableImageRenderer imageRenderer)
        Creates a new instance of this class, attached to the given renderer. This controller must be activated with setEnabled(true) in order to be used.
        Parameters:
        imageRenderer - the image renderer

    • Method Detail

      • setEnabled

        public void setEnabled​(boolean enabled)
        Enables or disables this controller. As this class attaches some listeners to the image renderer component, it's advisable to disable it when it's not needed, in order to facilitate garbage collection.
        Parameters:
        enabled - true if must be enabled, false otherwise

      • isEnabled

        public boolean isEnabled()
        Returns true if the controller is enabled.
        Returns:
        true if enabled

      • centerImage

        public void centerImage()
        Centers the image on the screen, keeping the current scale.