GlobalGameJame/Library/PackageCache/com.unity.textmeshpro@2.0.1/Scripts/Runtime/TMP_UpdateManager.cs

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2020-01-31 15:10:04 +00:00
using UnityEngine;
using UnityEngine.UI;
using System.Collections.Generic;
#if UNITY_2019_1_OR_NEWER
using UnityEngine.Rendering;
#elif UNITY_2018_1_OR_NEWER
using UnityEngine.Experimental.Rendering;
#endif
namespace TMPro
{
public class TMP_UpdateManager
{
private static TMP_UpdateManager s_Instance;
private readonly List<TMP_Text> m_LayoutRebuildQueue = new List<TMP_Text>();
private Dictionary<int, int> m_LayoutQueueLookup = new Dictionary<int, int>();
private readonly List<TMP_Text> m_GraphicRebuildQueue = new List<TMP_Text>();
private Dictionary<int, int> m_GraphicQueueLookup = new Dictionary<int, int>();
private readonly List<TMP_Text> m_InternalUpdateQueue = new List<TMP_Text>();
private Dictionary<int, int> m_InternalUpdateLookup = new Dictionary<int, int>();
//private bool m_PerformingGraphicRebuild;
//private bool m_PerformingLayoutRebuild;
/// <summary>
/// Get a singleton instance of the registry
/// </summary>
public static TMP_UpdateManager instance
{
get
{
if (TMP_UpdateManager.s_Instance == null)
TMP_UpdateManager.s_Instance = new TMP_UpdateManager();
return TMP_UpdateManager.s_Instance;
}
}
/// <summary>
/// Register to receive rendering callbacks.
/// </summary>
protected TMP_UpdateManager()
{
Camera.onPreCull += OnCameraPreCull;
#if UNITY_2019_1_OR_NEWER
RenderPipelineManager.beginFrameRendering += OnBeginFrameRendering;
#elif UNITY_2018_1_OR_NEWER
RenderPipeline.beginFrameRendering += OnBeginFrameRendering;
#endif
}
/// <summary>
/// Function used as a replacement for LateUpdate() to handle SDF Scale updates and Legacy Animation updates.
/// </summary>
/// <param name="textObject"></param>
internal static void RegisterTextObjectForUpdate(TMP_Text textObject)
{
TMP_UpdateManager.instance.InternalRegisterTextObjectForUpdate(textObject);
}
private void InternalRegisterTextObjectForUpdate(TMP_Text textObject)
{
int id = textObject.GetInstanceID();
if (this.m_InternalUpdateLookup.ContainsKey(id))
return;
m_InternalUpdateLookup[id] = id;
this.m_InternalUpdateQueue.Add(textObject);
return;
}
/// <summary>
/// Function to register elements which require a layout rebuild.
/// </summary>
/// <param name="element"></param>
public static void RegisterTextElementForLayoutRebuild(TMP_Text element)
{
TMP_UpdateManager.instance.InternalRegisterTextElementForLayoutRebuild(element);
}
private bool InternalRegisterTextElementForLayoutRebuild(TMP_Text element)
{
int id = element.GetInstanceID();
if (this.m_LayoutQueueLookup.ContainsKey(id))
return false;
m_LayoutQueueLookup[id] = id;
this.m_LayoutRebuildQueue.Add(element);
return true;
}
/// <summary>
/// Function to register elements which require a layout rebuild.
/// </summary>
/// <param name="element"></param>
public static void RegisterTextElementForGraphicRebuild(TMP_Text element)
{
TMP_UpdateManager.instance.InternalRegisterTextElementForGraphicRebuild(element);
}
private bool InternalRegisterTextElementForGraphicRebuild(TMP_Text element)
{
int id = element.GetInstanceID();
if (this.m_GraphicQueueLookup.ContainsKey(id))
return false;
m_GraphicQueueLookup[id] = id;
this.m_GraphicRebuildQueue.Add(element);
return true;
}
/// <summary>
/// Callback which occurs just before the Scriptable Render Pipeline (SRP) begins rendering.
/// </summary>
/// <param name="cameras"></param>
#if UNITY_2019_1_OR_NEWER
void OnBeginFrameRendering(ScriptableRenderContext renderContext, Camera[] cameras)
#elif UNITY_2018_1_OR_NEWER
void OnBeginFrameRendering(Camera[] cameras)
#endif
{
// Exclude the PreRenderCamera
#if UNITY_EDITOR
if (cameras.Length == 1 && cameras[0].cameraType == CameraType.Preview)
return;
#endif
DoRebuilds();
}
/// <summary>
/// Callback which occurs just before the cam is rendered.
/// </summary>
/// <param name="cam"></param>
void OnCameraPreCull(Camera cam)
{
// Exclude the PreRenderCamera
#if UNITY_EDITOR
if (cam.cameraType == CameraType.Preview)
return;
#endif
DoRebuilds();
}
/// <summary>
/// Process the rebuild requests in the rebuild queues.
/// </summary>
void DoRebuilds()
{
// Handle text objects the require an update either as a result of scale changes or legacy animation.
for (int i = 0; i < m_InternalUpdateQueue.Count; i++)
{
m_InternalUpdateQueue[i].InternalUpdate();
}
// Handle Layout Rebuild Phase
for (int i = 0; i < m_LayoutRebuildQueue.Count; i++)
{
m_LayoutRebuildQueue[i].Rebuild(CanvasUpdate.Prelayout);
}
if (m_LayoutRebuildQueue.Count > 0)
{
m_LayoutRebuildQueue.Clear();
m_LayoutQueueLookup.Clear();
}
// Handle Graphic Rebuild Phase
for (int i = 0; i < m_GraphicRebuildQueue.Count; i++)
{
m_GraphicRebuildQueue[i].Rebuild(CanvasUpdate.PreRender);
}
// If there are no objects in the queue, we don't need to clear the lists again.
if (m_GraphicRebuildQueue.Count > 0)
{
m_GraphicRebuildQueue.Clear();
m_GraphicQueueLookup.Clear();
}
}
internal static void UnRegisterTextObjectForUpdate(TMP_Text textObject)
{
TMP_UpdateManager.instance.InternalUnRegisterTextObjectForUpdate(textObject);
}
/// <summary>
/// Function to unregister elements which no longer require a rebuild.
/// </summary>
/// <param name="element"></param>
public static void UnRegisterTextElementForRebuild(TMP_Text element)
{
TMP_UpdateManager.instance.InternalUnRegisterTextElementForGraphicRebuild(element);
TMP_UpdateManager.instance.InternalUnRegisterTextElementForLayoutRebuild(element);
TMP_UpdateManager.instance.InternalUnRegisterTextObjectForUpdate(element);
}
private void InternalUnRegisterTextElementForGraphicRebuild(TMP_Text element)
{
int id = element.GetInstanceID();
TMP_UpdateManager.instance.m_GraphicRebuildQueue.Remove(element);
m_GraphicQueueLookup.Remove(id);
}
private void InternalUnRegisterTextElementForLayoutRebuild(TMP_Text element)
{
int id = element.GetInstanceID();
TMP_UpdateManager.instance.m_LayoutRebuildQueue.Remove(element);
m_LayoutQueueLookup.Remove(id);
}
private void InternalUnRegisterTextObjectForUpdate(TMP_Text textObject)
{
int id = textObject.GetInstanceID();
TMP_UpdateManager.instance.m_InternalUpdateQueue.Remove(textObject);
m_InternalUpdateLookup.Remove(id);
}
}
}