Package org.eclipse.graphiti.ui.internal.util.gef

Class ZoomManagerWithAnimation

  • public class ZoomManagerWithAnimation
extends org.eclipse.gef.editparts.ZoomManager
    Enhances the default ZoomManager by animating the change of the zoom. This is done by implicitly replacing every change of the zoom by a sequence of changes, which range from the old zoom to the new zoom.

    • Field Summary

      • Fields inherited from class org.eclipse.gef.editparts.ZoomManager

        ANIMATE_NEVER, ANIMATE_ZOOM_IN_OUT, FIT_ALL, FIT_HEIGHT, FIT_WIDTH

    • Constructor Summary

      Constructors 
      Constructor Description
      ZoomManagerWithAnimation​(org.eclipse.draw2d.ScalableFigure pane, org.eclipse.draw2d.Viewport viewport, org.eclipse.gef.ui.parts.ScrollingGraphicalViewer viewer)
      Creates a new ZoomManagerWithAnimation.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      protected double getFitHeightZoomLevel()
      Returns the zoomLevel needed so that the diagram shapes fit vertically on the screen.
      protected double getFitPageZoomLevel()
      Returns the zoomLevel needed so that the diagram shapes fit on the screen.
      protected double getFitWidthZoomLevel()
      Returns the zoomLevel needed so that the diagram shapes fit horizontally on the screen.
      int getTotalSteps()
      Returns the total number of steps.
      protected void primSetZoom​(double zoom)
      Sets many zoom-levels to create the animation-effect.
      void stepPerformed()
      Is called after each performed step.

      • Methods inherited from class org.eclipse.gef.editparts.ZoomManager

        addZoomListener, canZoomIn, canZoomOut, fireZoomChanged, getMaxZoom, getMinZoom, getNextZoomLevel, getPane, getPreviousZoomLevel, getScalableFigure, getUIMultiplier, getViewport, getZoom, getZoomAsText, getZoomLevelContributions, getZoomLevels, getZoomLevelsAsText, removeZoomListener, setUIMultiplier, setViewLocation, setZoom, setZoomAnimationStyle, setZoomAsText, setZoomLevelContributions, setZoomLevels, zoomIn, zoomOut, zoomTo

      • Methods inherited from class java.lang.Object

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

    • Constructor Detail

      • ZoomManagerWithAnimation

        public ZoomManagerWithAnimation​(org.eclipse.draw2d.ScalableFigure pane,
                                org.eclipse.draw2d.Viewport viewport,
                                org.eclipse.gef.ui.parts.ScrollingGraphicalViewer viewer)
        Creates a new ZoomManagerWithAnimation.

    • Method Detail

      • primSetZoom

        protected void primSetZoom​(double zoom)
        Sets many zoom-levels to create the animation-effect.
        Overrides:
        primSetZoom in class org.eclipse.gef.editparts.ZoomManager
        See Also:
        ZoomManager.primSetZoom(double)

      • getFitPageZoomLevel

        protected double getFitPageZoomLevel()
        Returns the zoomLevel needed so that the diagram shapes fit on the screen. In order to calculate the correct size, the invisible corner pixels which we need to have the scroll bars always present, are removed and added later again. If this is not the GFFigureCanvas, the corresponding super method is called.
        Overrides:
        getFitPageZoomLevel in class org.eclipse.gef.editparts.ZoomManager
        Returns:
        zoom setting required to fit the entire scalable figure on the screen

      • stepPerformed

        public void stepPerformed()
        Is called after each performed step.

        By default it dispatches all pending events of the current Display. This is important, because typically the steps do something which shall be visible to the user. By dispatching the events all updates to the UI will be performed.

      • getTotalSteps

        public int getTotalSteps()
        Returns the total number of steps. Should be called on every execute() and undo(), so that always the last preference-value is used.
        Returns:
        The total number of steps.

      • getFitWidthZoomLevel

        protected double getFitWidthZoomLevel()
        Returns the zoomLevel needed so that the diagram shapes fit horizontally on the screen. In order to calculate the correct size, the invisible corner pixels which we need to have the scroll bars always present, are removed and added later again. If this is not the GFFigureCanvas, the corresponding super method is called.
        Overrides:
        getFitWidthZoomLevel in class org.eclipse.gef.editparts.ZoomManager
        Returns:
        zoom setting required to fit the scalable figure horizontally on the screen

      • getFitHeightZoomLevel

        protected double getFitHeightZoomLevel()
        Returns the zoomLevel needed so that the diagram shapes fit vertically on the screen. In order to calculate the correct size, the invisible corner pixels which we need to have the scroll bars always present, are removed and added later again. If this is not the GFFigureCanvas, the corresponding super method is called.
        Overrides:
        getFitHeightZoomLevel in class org.eclipse.gef.editparts.ZoomManager
        Returns:
        zoom setting required to fit the scalable figure vertically on the screen