using UnityEngine;
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using UnityEngine.UI;
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using System.Collections;
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using System.Collections.Generic;
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using EnhancedUI.EnhancedScroller;
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namespace EnhancedScrollerDemos.JumpToDemo
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{
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/// <summary>
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/// This demo shows how to jump to an index in the scroller. You can jump to a position before
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/// or after the cell. You can also include the spacing before or after the cell.
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/// </summary>
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public class Controller : MonoBehaviour, IEnhancedScrollerDelegate
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{
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/// <summary>
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/// In this example we are going to use a standard generic List. We could have used
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/// a SmallList for efficiency, but this is just a demonstration that other list
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/// types can be used.
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/// </summary>
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private List<Data> _data;
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/// <summary>
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/// Reference to the scrollers
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/// </summary>
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public EnhancedScroller vScroller;
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public EnhancedScroller hScroller;
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/// <summary>
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/// References to the UI elements
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/// </summary>
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public InputField jumpIndexInput;
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public Toggle useSpacingToggle;
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public Slider scrollerOffsetSlider;
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public Slider cellOffsetSlider;
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/// <summary>
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/// Reference to the cell prefab
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/// </summary>
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public EnhancedScrollerCellView cellViewPrefab;
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public EnhancedScroller.TweenType vScrollerTweenType = EnhancedScroller.TweenType.immediate;
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public float vScrollerTweenTime = 0f;
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public EnhancedScroller.TweenType hScrollerTweenType = EnhancedScroller.TweenType.immediate;
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public float hScrollerTweenTime = 0f;
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void Start()
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{
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// set up the scroller delegates
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vScroller.Delegate = this;
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hScroller.Delegate = this;
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// set up some simple data
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_data = new List<Data>();
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for (var i = 0; i < 1000; i++)
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_data.Add(new Data() { cellText = "Cell Data Index " + i.ToString() });
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// tell the scroller to reload now that we have the data
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vScroller.ReloadData();
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hScroller.ReloadData();
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}
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#region UI Handlers
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public void JumpButton_OnClick()
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{
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int jumpDataIndex;
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// extract the integer from the input text
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if (int.TryParse(jumpIndexInput.text, out jumpDataIndex))
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{
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// jump to the index
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vScroller.JumpToDataIndex(jumpDataIndex, scrollerOffsetSlider.value, cellOffsetSlider.value, useSpacingToggle.isOn, vScrollerTweenType, vScrollerTweenTime);
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hScroller.JumpToDataIndex(jumpDataIndex, scrollerOffsetSlider.value, cellOffsetSlider.value, useSpacingToggle.isOn, hScrollerTweenType, hScrollerTweenTime);
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}
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else
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{
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Debug.LogWarning("The jump value you entered is not a number.");
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}
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}
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#endregion
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#region EnhancedScroller Handlers
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/// <summary>
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/// This tells the scroller the number of cells that should have room allocated. This should be the length of your data array.
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/// </summary>
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/// <param name="scroller">The scroller that is requesting the data size</param>
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/// <returns>The number of cells</returns>
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public int GetNumberOfCells(EnhancedScroller scroller)
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{
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// in this example, we just pass the number of our data elements
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return _data.Count;
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}
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/// <summary>
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/// This tells the scroller what the size of a given cell will be. Cells can be any size and do not have
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/// to be uniform. For vertical scrollers the cell size will be the height. For horizontal scrollers the
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/// cell size will be the width.
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/// </summary>
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/// <param name="scroller">The scroller requesting the cell size</param>
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/// <param name="dataIndex">The index of the data that the scroller is requesting</param>
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/// <returns>The size of the cell</returns>
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public float GetCellViewSize(EnhancedScroller scroller, int dataIndex)
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{
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// in this example, even numbered cells are 30 pixels tall, odd numbered cells are 100 pixels tall for the vertical scroller
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// the horizontal scroller has a fixed cell size of 200 pixels
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if (scroller == vScroller)
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return (dataIndex % 2 == 0 ? 30f : 100f);
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else
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return (200f);
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}
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/// <summary>
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/// Gets the cell to be displayed. You can have numerous cell types, allowing variety in your list.
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/// Some examples of this would be headers, footers, and other grouping cells.
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/// </summary>
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/// <param name="scroller">The scroller requesting the cell</param>
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/// <param name="dataIndex">The index of the data that the scroller is requesting</param>
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/// <param name="cellIndex">The index of the list. This will likely be different from the dataIndex if the scroller is looping</param>
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/// <returns>The cell for the scroller to use</returns>
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public EnhancedScrollerCellView GetCellView(EnhancedScroller scroller, int dataIndex, int cellIndex)
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{
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// first, we get a cell from the scroller by passing a prefab.
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// if the scroller finds one it can recycle it will do so, otherwise
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// it will create a new cell.
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CellView cellView = scroller.GetCellView(cellViewPrefab) as CellView;
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// set the name of the game object to the cell's data index.
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// this is optional, but it helps up debug the objects in
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// the scene hierarchy.
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cellView.name = "Cell " + dataIndex.ToString();
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// in this example, we just pass the data to our cell's view which will update its UI
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cellView.SetData(_data[dataIndex]);
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// return the cell to the scroller
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return cellView;
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}
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#endregion
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}
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}
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