模块 VirtualizedFX
程序包 io.github.palexdev.virtualizedfx.flow.base

接口 OrientationHelper

所有已知实现类:
OrientationHelper.HorizontalHelper, OrientationHelper.VerticalHelper
public interface OrientationHelper
Helper class to avoid as much as possible if/else statements to check the VirtualFlow orientation.

  • 方法详细资料

    • firstVisible

      int firstVisible()
      返回:
      the index of the first visible cell in the viewport

    • lastVisible

      int lastVisible()
      返回:
      the index of the last visible cell in the viewport

    • computeCellsNumber

      int computeCellsNumber()
      返回:
      the number of cells to show

    • computeEstimatedHeight

      double computeEstimatedHeight(double cellHeight)
      Computes the estimated height of the flow.

    • computeEstimatedWidth

      double computeEstimatedWidth(double cellWidth)
      Computes the estimated width of the flow.

    • getHeight

      double getHeight(Node node)
      返回:
      the height of the given node

    • getWidth

      double getWidth(Node node)
      返回:
      the width of the given node

    • resizeRelocate

      void resizeRelocate(Node node, double pos, double w, double h)
      Resizes and relocates the given node with the given parameters.

    • layout

      void layout(Node node, int index, double cellW, double cellH)
      Lays out the given node.

    • boundSize

      static double boundSize(double pref, double min, double max)
      Computes size of a Node between its pref, min and max sizes.

      The formula is: 

       
     double a = Math.max(pref, min);
     double b = Math.max(min, max);
     return Math.min(a, b);

    • boundWidth

      static double boundWidth(Node node)

    • boundHeight

      static double boundHeight(Node node)

    • scrollBy

      void scrollBy(double pixels)
      Scrolls the flow by the given amount of pixels.

    • scrollTo

      void scrollTo(int index)
      Scrolls the flow to the given cell index.

    • scrollToFirst

      void scrollToFirst()
      Scrolls the flow to the first cell.

    • scrollToLast

      void scrollToLast()
      Scrolls the flow to the last cell.

    • scrollToPixel

      void scrollToPixel(double pixel)
      Scrolls the flow to the given pixel value.

    • dispose

      void dispose()
      Removes and clears any listener.

      This must be called every time the OrientationHelper of the VirtualFlow is changed (typically occurs when the orientation changes).