Singularity/Library/PackageCache/com.unity.2d.animation@7.0.10/Editor/SpriteLib/SpriteSelectionWidget.cs
2024-05-06 11:45:45 -07:00

104 lines
3.8 KiB
C#

using UnityEngine;
using System.Collections.Generic;
namespace UnityEditor.U2D.Animation
{
internal class SpriteSelectorWidget
{
class Styles
{
public GUIStyle gridListStyle;
public Styles()
{
gridListStyle = new GUIStyle("GridList");
gridListStyle.alignment = GUI.skin.button.alignment;
}
}
Sprite[] m_SpriteList = new Sprite[0];
Texture2D[] m_SpritePreviews = new Texture2D[0];
List<int> m_SpritePreviewNeedFetching = new List<int>();
Vector2 m_ScrollPos;
Styles m_Style;
const int kTargetPreviewSize = 64;
public SpriteSelectorWidget()
{}
public void UpdateContents(Sprite[] sprites)
{
m_SpriteList = sprites;
m_SpritePreviews = new Texture2D[sprites.Length];
for (int i = 0; i < m_SpritePreviews.Length; ++i)
m_SpritePreviewNeedFetching.Add(i);
UpdateSpritePreviews();
}
public int ShowGUI(int selectedIndex)
{
if (m_Style == null)
m_Style = new Styles();
UpdateSpritePreviews();
var drawRect = EditorGUILayout.GetControlRect(false, kTargetPreviewSize + 10f, new[] {GUILayout.ExpandWidth(true)});
if(Event.current.type == EventType.Repaint)
GUI.skin.box.Draw(drawRect, false, false, false, false);
if (m_SpriteList == null || m_SpriteList.Length == 0)
{
return selectedIndex;
}
selectedIndex = (selectedIndex > m_SpriteList.Length) ? 0 : selectedIndex;
float columnF;
int columnCount, rowCount;
GetRowColumnCount(drawRect.width - 20, kTargetPreviewSize, m_SpriteList.Length, out columnCount, out rowCount, out columnF);
if (columnCount > 0 && rowCount > 0)
{
float contentSize = (columnF * kTargetPreviewSize) / columnCount;
var gridRect = new Rect(drawRect.x, drawRect.y, drawRect.width - 20, rowCount * contentSize);
m_ScrollPos = GUI.BeginScrollView(drawRect,m_ScrollPos, gridRect, false, false, GUIStyle.none, GUI.skin.verticalScrollbar);
m_Style.gridListStyle.fixedWidth = contentSize;
m_Style.gridListStyle.fixedHeight = contentSize;
selectedIndex = GUI.SelectionGrid( gridRect, selectedIndex, m_SpritePreviews, columnCount, m_Style.gridListStyle);
GUI.EndScrollView();
}
return selectedIndex;
}
static void GetRowColumnCount(float drawWidth, int size, int contentCount, out int column, out int row, out float columnf)
{
columnf = drawWidth / size;
column = (int)Mathf.Floor(columnf);
if (column == 0)
row = 0;
else
row = (int)Mathf.Ceil((contentCount + column) / column);
}
public bool NeedUpdatePreview()
{
return m_SpritePreviewNeedFetching.Count > 0;
}
void UpdateSpritePreviews()
{
for (int i = 0; i < m_SpritePreviewNeedFetching.Count; ++i)
{
var index = m_SpritePreviewNeedFetching[i];
if(m_SpriteList[index] == null)
m_SpritePreviews[index] = EditorGUIUtility.Load("icons/console.warnicon.png") as Texture2D;
else
m_SpritePreviews[index] = AssetPreview.GetAssetPreview(m_SpriteList[index]);
if (m_SpritePreviews[index] != null)
{
m_SpritePreviewNeedFetching.RemoveAt(i);
--i;
}
}
}
}
}