//----------------------------------------------
// NGUI: Next-Gen UI kit
// Copyright © 2011-2014 Tasharen Entertainment
//----------------------------------------------
using UnityEngine;
using System.Collections.Generic;
/// <summary>
/// All children added to the game object with this script will be arranged into a table
/// with rows and columns automatically adjusting their size to fit their content
/// (think "table" tag in HTML).
/// </summary>
[AddComponentMenu("NGUI/Interaction/Table (Pivot)")]
public class UITablePivot : UIWidgetContainer
{
public delegate void OnReposition();
public enum Direction
{
Down,
Up,
}
public enum Pivot
{
Left,
Center,
Right
}
public enum PivotVertical
{
Up,
Middle,
Down
}
public enum Sorting
{
None,
Alphabetic,
Horizontal,
Vertical,
Custom,
}
/// <summary>
/// How many columns there will be before a new line is started. 0 means unlimited.
/// </summary>
public int columns = 0;
/// <summary>
/// Which way the new lines will be added.
/// </summary>
public Direction direction = Direction.Down;
/// <summary>
/// How to sort the grid's elements.
/// </summary>
public Sorting sorting = Sorting.None;
/// <summary>
/// Table pivot
/// </summary>
///
public Pivot pivot = Pivot.Left;
/// <summary>
/// Table vertical pivot
/// </summary>
public PivotVertical pivotVertical = PivotVertical.Middle;
/// <summary>
/// Whether inactive children will be discarded from the table's calculations.
/// </summary>
public bool hideInactive = true;
/// <summary>
/// Whether the parent container will be notified of the table's changes.
/// </summary>
public bool keepWithinPanel = false;
/// <summary>
/// Padding around each entry, in pixels.
/// </summary>
public Vector2 padding = Vector2.zero;
/// <summary>
/// Delegate function that will be called when the table repositions its content.
/// </summary>
public OnReposition onReposition;
protected UIPanel mPanel;
protected bool mInitDone = false;
protected bool mReposition = false;
protected List
<Transform
> mChildren
= new List
<Transform
>();
// Use the 'sorting' property instead
[HideInInspector]
[SerializeField]
bool
sorted = false;
/// <summary>
/// Reposition the children on the next Update().
/// </summary>
public bool repositionNow { set { if (value) { mReposition = true; enabled = true; } } }
/// <summary>
/// Returns the list of table's children, sorted alphabetically if necessary.
/// </summary>
public List<Transform> children
{
get
{
if (mChildren.Count == 0)
{
Transform myTrans = transform;
mChildren.Clear();
for (int i = 0; i < myTrans.childCount; ++i)
{
Transform child = myTrans.GetChild(i);
if (child && child.gameObject && (!hideInactive || NGUITools.GetActive(child.gameObject)))
mChildren.Add(child);
}
if (sorting != Sorting.None || sorted)
{
if (sorting == Sorting.Alphabetic) mChildren.Sort(UIGrid.SortByName);
else if (sorting == Sorting.Horizontal) mChildren.Sort(UIGrid.SortHorizontal);
else if (sorting == Sorting.Vertical) mChildren.Sort(UIGrid.SortVertical);
else Sort(mChildren);
}
}
return mChildren;
}
}
/// <summary>
/// Want your own custom sorting logic? Override this function.
/// </summary>
protected virtual void Sort (List<Transform> list) { list.Sort(UIGrid.SortByName); }
/// <summary>
/// Positions the grid items, taking their own size into consideration.
/// </summary>
protected void RepositionVariableSize (List<Transform> children)
{
float xOffset = 0;
float yOffset = 0;
int cols = columns > 0 ? children.Count / columns + 1 : 1;
int rows = columns > 0 ? columns : children.Count;
Bounds
[,
] bounds
= new Bounds
[cols, rows
]; Bounds
[] boundsRows
= new Bounds
[rows
]; Bounds
[] boundsCols
= new Bounds
[cols
];
int x = 0;
int y = 0;
for (int i = 0, imax = children.Count; i < imax; ++i)
{
Transform t = children[i];
Bounds b = NGUIMath.CalculateRelativeWidgetBounds(t, !hideInactive);
Vector3 scale = t.localScale;
b.min = Vector3.Scale(b.min, scale);
b.max = Vector3.Scale(b.max, scale);
bounds[y, x] = b;
boundsRows[x].Encapsulate(b);
boundsCols[y].Encapsulate(b);
if (++x >= columns && columns > 0)
{
x = 0;
++y;
}
}
x = 0;
y = 0;
for (int i = 0, imax = children.Count; i < imax; ++i)
{
Transform t = children[i];
Bounds b = bounds[y, x];
Bounds br = boundsRows[x];
Bounds bc = boundsCols[y];
Vector3 pos = t.localPosition;
pos.x = xOffset + b.extents.x - b.center.x;
pos.x += b.min.x - br.min.x + padding.x;
if (direction == Direction.Down)
{
pos.y = -yOffset - b.extents.y - b.center.y;
pos.y += (b.max.y - b.min.y - bc.max.y + bc.min.y) * 0.5f - padding.y;
}
else
{
pos.y = yOffset + (b.extents.y - b.center.y);
pos.y -= (b.max.y - b.min.y - bc.max.y + bc.min.y) * 0.5f - padding.y;
}
xOffset += br.max.x - br.min.x + padding.x * 2f;
t.localPosition = pos;
if (++x >= columns && columns > 0)
{
x = 0;
++y;
xOffset = 0f;
yOffset += bc.size.y + padding.y * 2f;
}
}
RepositionPivot(children);
}
/// <summary>
/// Recalculate the position of all the elements of the table, to change the pivot
/// </summary>
public void RepositionPivot(List<Transform> children) {
float Width = 0;
if (pivot != Pivot.Left)
Width = NGUIMath.CalculateRelativeWidgetBounds(transform).size.x;
float Height = 0;
if (pivotVertical != PivotVertical.Middle)
Height = NGUIMath.CalculateRelativeWidgetBounds(transform).size.y;
for (int i = 0, imax = children.Count; i < imax; ++i) {
Transform t = children [i];
Vector3 pos = t.localPosition;
if (pivot == Pivot.Center)
pos.x -= Width / 2 + padding.x;
else if (pivot == Pivot.Right)
pos.x -= Width + padding.x;
else if (pivot == Pivot.Left)
pos.x -= padding.x;
float childHeight = NGUIMath.CalculateRelativeWidgetBounds(t).size.y;
if (pivotVertical == PivotVertical.Up)
pos.y += Height / 2 - childHeight / 2;
else if (pivotVertical == PivotVertical.Down)
pos.y -= Height / 2 - childHeight / 2;
t.localPosition = pos;
}
}
/// <summary>
/// Recalculate the position of all elements within the table, sorting them alphabetically if necessary.
/// </summary>
[ContextMenu("Execute")]
public virtual void Reposition ()
{
if (Application.isPlaying && !mInitDone && NGUITools.GetActive(this))
{
mReposition = true;
return;
}
if (!mInitDone) Init();
mReposition = false;
Transform myTrans = transform;
mChildren.Clear();
List<Transform> ch = children;
if (ch.Count > 0) RepositionVariableSize(ch);
if (keepWithinPanel && mPanel != null)
{
mPanel.ConstrainTargetToBounds(myTrans, true);
UIScrollView sv = mPanel.GetComponent<UIScrollView>();
if (sv != null) sv.UpdateScrollbars(true);
}
if (onReposition != null)
onReposition();
}
/// <summary>
/// Position the grid's contents when the script starts.
/// </summary>
protected virtual void Start ()
{
Init();
Reposition();
enabled = false;
}
/// <summary>
/// Find the necessary components.
/// </summary>
protected virtual void Init ()
{
mInitDone = true;
mPanel = NGUITools.FindInParents<UIPanel>(gameObject);
}
/// <summary>
/// Is it time to reposition? Do so now.
/// </summary>
protected virtual void LateUpdate ()
{
if (mReposition) Reposition();
enabled = false;
}
}
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