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AbstractConcept 2022-09-13 00:36:34 -05:00
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Library/PackageCache/com.unity.2d.animation@3.2.6/Editor/SkinningModule/IMGUI/RectSelectionTool.cs Normal file
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using System;
using UnityEngine;
namespace UnityEditor.U2D.Animation
{
internal class RectSelectionTool<T>
{
private int m_HashCode = "RectSelectionTool".GetHashCode();
private int m_ControlID = -1;
private bool m_Moved = false;
private RectSlider m_RectSlider = new RectSlider();
public int controlID { get { return m_ControlID; } }
public IRectSelector<T> rectSelector { get; set; }
public ICacheUndo cacheUndo { get; set; }
public Action onSelectionStart = () => {};
public Action onSelectionUpdate = () => {};
public Action onSelectionEnd = () => {};
public void OnGUI()
{
Debug.Assert(rectSelector != null);
Debug.Assert(cacheUndo != null);
m_ControlID = GUIUtility.GetControlID(m_HashCode, FocusType.Passive);
Event ev = Event.current;
EventType eventType = ev.GetTypeForControl(m_ControlID);
if (GUIUtility.hotControl == 0 && HandleUtility.nearestControl == m_ControlID &&
rectSelector.selection.Count > 0 && eventType == EventType.MouseDown && ev.button == 0 && !ev.alt)
{
m_Moved = false;
onSelectionStart();
}
if (m_Moved && GUIUtility.hotControl == m_ControlID && eventType == EventType.MouseUp && ev.button == 0)
{
cacheUndo.BeginUndoOperation(TextContent.selection);
rectSelector.selection.EndSelection(true);
onSelectionEnd();
}
EditorGUI.BeginChangeCheck();
rectSelector.rect = m_RectSlider.Do(m_ControlID);
if (EditorGUI.EndChangeCheck())
{
if(!m_Moved)
{
cacheUndo.BeginUndoOperation(TextContent.selection);
if(!ev.shift)
rectSelector.selection.Clear();
m_Moved = true;
}
rectSelector.selection.BeginSelection();
rectSelector.Select();
onSelectionUpdate();
}
if (eventType == EventType.Repaint && GUIUtility.hotControl == m_ControlID)
{
DrawingUtility.DrawRect(rectSelector.rect, Vector3.zero, Quaternion.identity, new Color(0f, 1f, 1f, 1f), 0.05f, 0.8f);
}
}
}
}