【Unity3D】制作进度条——让Image同时具有Filled和Sliced的功能

解决方案转载于：UGUI——重写Image类实现进度条作者：糯米团子滚呀滚

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
using UnityEngine.Sprites;public class childImage :  Image{protected override void OnPopulateMesh(VertexHelper toFill){base.OnPopulateMesh(toFill);if (overrideSprite == null){base.OnPopulateMesh(toFill);return;}if (type == Type.Sliced){GenerateSlicedSprite_(toFill);}}Vector4 GetAdjustedBorders(Vector4 border, Rect rect){for (int axis = 0; axis <= 1; axis++){// If the rect is smaller than the combined borders, then there's not room for the borders at their normal size.// In order to avoid artefacts with overlapping borders, we scale the borders down to fit.float combinedBorders = border[axis] + border[axis + 2];if (rect.size[axis] < combinedBorders && combinedBorders != 0){float borderScaleRatio = rect.size[axis] / combinedBorders;border[axis] *= borderScaleRatio;border[axis + 2] *= borderScaleRatio;}}return border;}static void AddQuad(VertexHelper vertexHelper, Vector2 posMin, Vector2 posMax, Color32 color, Vector2 uvMin, Vector2 uvMax){int startIndex = vertexHelper.currentVertCount;vertexHelper.AddVert(new Vector3(posMin.x, posMin.y, 0), color, new Vector2(uvMin.x, uvMin.y));vertexHelper.AddVert(new Vector3(posMin.x, posMax.y, 0), color, new Vector2(uvMin.x, uvMax.y));vertexHelper.AddVert(new Vector3(posMax.x, posMax.y, 0), color, new Vector2(uvMax.x, uvMax.y));vertexHelper.AddVert(new Vector3(posMax.x, posMin.y, 0), color, new Vector2(uvMax.x, uvMin.y));vertexHelper.AddTriangle(startIndex, startIndex + 1, startIndex + 2);vertexHelper.AddTriangle(startIndex + 2, startIndex + 3, startIndex);}private void GenerateSlicedSprite_(VertexHelper toFill){Vector4 outer, inner, padding, border;if (overrideSprite != null){outer = DataUtility.GetOuterUV(overrideSprite);inner = DataUtility.GetInnerUV(overrideSprite);padding = DataUtility.GetPadding(overrideSprite);border = overrideSprite.border;}else{outer = Vector4.zero;inner = Vector4.zero;padding = Vector4.zero;border = Vector4.zero;}Rect rect = GetPixelAdjustedRect();border = GetAdjustedBorders(border / pixelsPerUnit, rect);padding = padding / pixelsPerUnit;float condition = (border.z + border.x) / rect.width;#region 实际显示sizefloat[] x={0,0,0,0};x[0] = 0;if (fillAmount <condition){x[1] = fillAmount / 2 * rect.width;x[2] = x[1]+ 0;x[3] = x[1]*2;}else{x[1] = border.x;x[2] = rect.width *fillAmount-border.z;x[3] =x[2]+border.z;}float []y ={0+rect.y,rect.height+rect.y};for (int i = 0; i < 4; ++i){x[i] += rect.x;}#endregion#region uv值float[] x_uv = {0,0,0,0 };x_uv[0] =0;if (fillAmount <condition){x_uv[1] = fillAmount*rect.width/2/sprite.rect.size.x;x_uv[2] = 1 - x_uv[1];}else{x_uv[1] = inner.x;x_uv[2] = inner.z;}x_uv[3] = outer.z;float y_uv = 1;#endregiontoFill.Clear();for (int i = 0; i < 3; i++){int i2 = i + 1;AddQuad(toFill,new Vector2(x[i],y[0]),new Vector2(x[i2],y[1]),color,new Vector2(x_uv[i],0),new Vector2(x_uv[i2],y_uv));}}}

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEditor.UI;
using UnityEditor;
using UnityEditor.AnimatedValues;
using System.Linq;[CustomEditor(typeof(childImage))]
public class ChildchildImageInspector : ImageEditor
{SerializedProperty m_FillMethod;SerializedProperty m_FillOrigin;SerializedProperty m_FillAmount;SerializedProperty m_FillClockwise;SerializedProperty m_Type;SerializedProperty m_FillCenter;SerializedProperty m_Sprite;SerializedProperty m_PreserveAspect;GUIContent m_SpriteContent;GUIContent m_SpriteTypeContent;GUIContent m_ClockwiseContent;AnimBool m_ShowSlicedOrTiled;AnimBool m_ShowSliced;AnimBool m_ShowFilled;AnimBool m_ShowType;void SetShowNativeSize(bool instant){childImage.Type type = (childImage.Type)m_Type.enumValueIndex;bool showNativeSize = (type == childImage.Type.Simple || type == childImage.Type.Filled);base.SetShowNativeSize(showNativeSize, instant);}protected override void OnEnable(){base.OnEnable();m_SpriteContent = new GUIContent("Source childImage");m_SpriteTypeContent = new GUIContent("childImage Type");m_ClockwiseContent = new GUIContent("Clockwise");m_Sprite = serializedObject.FindProperty("m_Sprite");m_Type = serializedObject.FindProperty("m_Type");m_FillCenter = serializedObject.FindProperty("m_FillCenter");m_FillMethod = serializedObject.FindProperty("m_FillMethod");m_FillOrigin = serializedObject.FindProperty("m_FillOrigin");m_FillClockwise = serializedObject.FindProperty("m_FillClockwise");m_FillAmount = serializedObject.FindProperty("m_FillAmount");m_PreserveAspect = serializedObject.FindProperty("m_PreserveAspect");m_ShowType = new AnimBool(m_Sprite.objectReferenceValue != null);m_ShowType.valueChanged.AddListener(Repaint);var typeEnum = (childImage.Type)m_Type.enumValueIndex;m_ShowSlicedOrTiled = new AnimBool(!m_Type.hasMultipleDifferentValues && typeEnum == childImage.Type.Sliced);m_ShowSliced = new AnimBool(!m_Type.hasMultipleDifferentValues && typeEnum == childImage.Type.Sliced);m_ShowFilled = new AnimBool(!m_Type.hasMultipleDifferentValues && typeEnum == childImage.Type.Filled);m_ShowSlicedOrTiled.valueChanged.AddListener(Repaint);m_ShowSliced.valueChanged.AddListener(Repaint);m_ShowFilled.valueChanged.AddListener(Repaint);SetShowNativeSize(true);}public override void OnInspectorGUI(){serializedObject.Update();SpriteGUI();AppearanceControlsGUI();RaycastControlsGUI();m_ShowType.target = m_Sprite.objectReferenceValue != null;if (EditorGUILayout.BeginFadeGroup(m_ShowType.faded)){EditorGUILayout.PropertyField(m_Type, m_SpriteTypeContent);++EditorGUI.indentLevel;{childImage.Type typeEnum = (childImage.Type)m_Type.enumValueIndex;bool showSlicedOrTiled = (!m_Type.hasMultipleDifferentValues && (typeEnum ==childImage.Type.Sliced|| typeEnum == childImage.Type.Tiled));if (showSlicedOrTiled && targets.Length > 1)showSlicedOrTiled = targets.Select(obj => obj as childImage).All(img => img.hasBorder);m_ShowSlicedOrTiled.target = showSlicedOrTiled;m_ShowSliced.target = (showSlicedOrTiled && !m_Type.hasMultipleDifferentValues && typeEnum == childImage.Type.Sliced);m_ShowFilled.target = (!m_Type.hasMultipleDifferentValues && typeEnum == childImage.Type.Filled);childImage cImage = target as childImage;if (EditorGUILayout.BeginFadeGroup(m_ShowSlicedOrTiled.faded)){if (cImage.hasBorder){EditorGUILayout.PropertyField(m_FillCenter);EditorGUILayout.PropertyField(m_FillAmount);}}EditorGUILayout.EndFadeGroup();if (EditorGUILayout.BeginFadeGroup(m_ShowSliced.faded)){if (cImage.sprite != null && !cImage.hasBorder)EditorGUILayout.HelpBox("This childImage doesn't have a border.", MessageType.Warning);}EditorGUILayout.EndFadeGroup();if (EditorGUILayout.BeginFadeGroup(m_ShowFilled.faded)){EditorGUI.BeginChangeCheck();EditorGUILayout.PropertyField(m_FillMethod);if (EditorGUI.EndChangeCheck()){m_FillOrigin.intValue = 0;}switch ((childImage.FillMethod)m_FillMethod.enumValueIndex){case childImage.FillMethod.Horizontal:m_FillOrigin.intValue = (int)(childImage.OriginHorizontal)EditorGUILayout.EnumPopup("Fill Origin", (childImage.OriginHorizontal)m_FillOrigin.intValue);break;case childImage.FillMethod.Vertical:m_FillOrigin.intValue = (int)(childImage.OriginVertical)EditorGUILayout.EnumPopup("Fill Origin", (childImage.OriginVertical)m_FillOrigin.intValue);break;case childImage.FillMethod.Radial90:m_FillOrigin.intValue = (int)(childImage.Origin90)EditorGUILayout.EnumPopup("Fill Origin", (childImage.Origin90)m_FillOrigin.intValue);break;case childImage.FillMethod.Radial180:m_FillOrigin.intValue = (int)(childImage.Origin180)EditorGUILayout.EnumPopup("Fill Origin", (childImage.Origin180)m_FillOrigin.intValue);break;case childImage.FillMethod.Radial360:m_FillOrigin.intValue = (int)(childImage.Origin360)EditorGUILayout.EnumPopup("Fill Origin", (childImage.Origin360)m_FillOrigin.intValue);break;}EditorGUILayout.PropertyField(m_FillAmount);if ((childImage.FillMethod)m_FillMethod.enumValueIndex > childImage.FillMethod.Vertical){EditorGUILayout.PropertyField(m_FillClockwise, m_ClockwiseContent);}}EditorGUILayout.EndFadeGroup();}--EditorGUI.indentLevel;}EditorGUILayout.EndFadeGroup();SetShowNativeSize(false);if (EditorGUILayout.BeginFadeGroup(m_ShowNativeSize.faded)){EditorGUI.indentLevel++;EditorGUILayout.PropertyField(m_PreserveAspect);EditorGUI.indentLevel--;}EditorGUILayout.EndFadeGroup();NativeSizeButtonGUI();serializedObject.ApplyModifiedProperties();}
}

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