431 lines
17 KiB
C#
431 lines
17 KiB
C#
using System;
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using UnityEngine;
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using UnityEvent = UnityEngine.Event;
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namespace UnityEditor.U2D.Sprites
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{
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internal class SpriteUtilityWindow : EditorWindow
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{
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protected class Styles
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{
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public readonly GUIStyle dragdot = "U2D.dragDot";
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public readonly GUIStyle dragdotDimmed = "U2D.dragDotDimmed";
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public readonly GUIStyle dragdotactive = "U2D.dragDotActive";
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public readonly GUIStyle createRect = "U2D.createRect";
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public readonly GUIStyle preToolbar = "preToolbar";
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public readonly GUIStyle preButton = "preButton";
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public readonly GUIStyle preLabel = "preLabel";
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public readonly GUIStyle preSlider = "preSlider";
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public readonly GUIStyle preSliderThumb = "preSliderThumb";
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public readonly GUIStyle preBackground = "preBackground";
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public readonly GUIStyle pivotdotactive = "U2D.pivotDotActive";
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public readonly GUIStyle pivotdot = "U2D.pivotDot";
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public readonly GUIStyle dragBorderdot = new GUIStyle();
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public readonly GUIStyle dragBorderDotActive = new GUIStyle();
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public readonly GUIStyle toolbar;
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public readonly GUIContent alphaIcon;
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public readonly GUIContent RGBIcon;
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public readonly GUIStyle notice;
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public readonly GUIContent smallMip;
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public readonly GUIContent largeMip;
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public Styles()
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{
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toolbar = new GUIStyle(EditorStyles.inspectorBig);
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toolbar.margin.top = 0;
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toolbar.margin.bottom = 0;
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alphaIcon = EditorGUIUtility.IconContent("PreTextureAlpha");
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RGBIcon = EditorGUIUtility.IconContent("PreTextureRGB");
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preToolbar.border.top = 0;
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createRect.border = new RectOffset(3, 3, 3, 3);
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notice = new GUIStyle(GUI.skin.label);
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notice.alignment = TextAnchor.MiddleCenter;
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notice.normal.textColor = Color.yellow;
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dragBorderdot.fixedHeight = 5f;
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dragBorderdot.fixedWidth = 5f;
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dragBorderdot.normal.background = EditorGUIUtility.whiteTexture;
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dragBorderDotActive.fixedHeight = dragBorderdot.fixedHeight;
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dragBorderDotActive.fixedWidth = dragBorderdot.fixedWidth;
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dragBorderDotActive.normal.background = EditorGUIUtility.whiteTexture;
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smallMip = EditorGUIUtility.IconContent("PreTextureMipMapLow");
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largeMip = EditorGUIUtility.IconContent("PreTextureMipMapHigh");
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}
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}
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protected void InitStyles()
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{
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if (m_Styles == null)
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m_Styles = new Styles();
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}
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protected Styles m_Styles;
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protected const float k_BorderMargin = 10f;
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protected const float k_ScrollbarMargin = 16f;
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protected const float k_InspectorWindowMargin = 8f;
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protected const float k_InspectorWidth = 330f;
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protected const float k_MinZoomPercentage = 0.9f;
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protected const float k_MaxZoom = 50f;
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protected const float k_WheelZoomSpeed = 0.03f;
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protected const float k_MouseZoomSpeed = 0.005f;
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protected const float k_ToolbarHeight = 17f;
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protected ITexture2D m_Texture;
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protected ITexture2D m_TextureAlphaOverride;
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Rect m_TextureViewRect;
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protected Rect m_TextureRect;
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[SerializeField]
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protected bool m_ShowAlpha = false;
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[SerializeField]
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protected float m_MipLevel = 0;
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[SerializeField]
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protected float m_Zoom = -1f;
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[SerializeField]
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protected Vector2 m_ScrollPosition = new Vector2();
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public float zoomLevel
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{
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get { return m_Zoom; }
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set { m_Zoom = Mathf.Clamp(value, GetMinZoom(), k_MaxZoom); }
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}
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internal Rect textureViewRect
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{
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get => m_TextureViewRect;
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set
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{
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m_TextureViewRect = value;
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zoomLevel = m_Zoom; // update zoom level
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}
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}
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public Vector2 scrollPosition
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{
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get { return m_ScrollPosition; }
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set
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{
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if (m_Zoom < 0)
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m_Zoom = GetMinZoom();
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m_ScrollPosition.x = Mathf.Clamp(value.x, maxScrollRect.xMin, maxScrollRect.xMax);
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m_ScrollPosition.y = Mathf.Clamp(value.y, maxScrollRect.yMin, maxScrollRect.yMax);
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}
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}
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public bool showAlpha
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{
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get { return m_ShowAlpha; }
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set { m_ShowAlpha = value; }
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}
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public float mipLevel
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{
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get { return m_MipLevel; }
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set
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{
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var mipCount = 1;
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if (m_Texture != null)
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mipCount = Mathf.Max(mipCount, TextureUtil.GetMipmapCount(m_Texture));
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m_MipLevel = Mathf.Clamp(value, 0, mipCount - 1);
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}
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}
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protected float GetMinZoom()
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{
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if (m_Texture == null)
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return 1.0f;
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// Case 654327: Add k_MaxZoom size to min check to ensure that min zoom is smaller than max zoom
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return Mathf.Min(m_TextureViewRect.width / m_Texture.width, m_TextureViewRect.height / m_Texture.height, k_MaxZoom) * k_MinZoomPercentage;
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}
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protected void HandleZoom()
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{
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bool zoomMode = UnityEvent.current.alt && UnityEvent.current.button == 1;
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if (zoomMode)
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{
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EditorGUIUtility.AddCursorRect(m_TextureViewRect, MouseCursor.Zoom);
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}
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if (
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((UnityEvent.current.type == EventType.MouseUp || UnityEvent.current.type == EventType.MouseDown) && zoomMode) ||
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((UnityEvent.current.type == EventType.KeyUp || UnityEvent.current.type == EventType.KeyDown) && UnityEvent.current.keyCode == KeyCode.LeftAlt)
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)
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{
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Repaint();
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}
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if (UnityEvent.current.type == EventType.ScrollWheel || (UnityEvent.current.type == EventType.MouseDrag && UnityEvent.current.alt && UnityEvent.current.button == 1))
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{
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float zoomMultiplier = 1f - UnityEvent.current.delta.y * (UnityEvent.current.type == EventType.ScrollWheel ? k_WheelZoomSpeed : -k_MouseZoomSpeed);
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// Clamp zoom
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float wantedZoom = m_Zoom * zoomMultiplier;
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float currentZoom = Mathf.Clamp(wantedZoom, GetMinZoom(), k_MaxZoom);
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if (currentZoom != m_Zoom)
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{
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m_Zoom = currentZoom;
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// We need to fix zoomMultiplier if we clamped wantedZoom != currentZoom
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if (wantedZoom != currentZoom)
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zoomMultiplier /= wantedZoom / currentZoom;
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Vector3 textureHalfSize = new Vector2(m_Texture.width, m_Texture.height) * 0.5f;
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Vector3 mousePositionWorld = Handles.inverseMatrix.MultiplyPoint3x4(UnityEvent.current.mousePosition + m_ScrollPosition);
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Vector3 delta = (mousePositionWorld - textureHalfSize) * (zoomMultiplier - 1f);
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m_ScrollPosition += (Vector2)Handles.matrix.MultiplyVector(delta);
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UnityEvent.current.Use();
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}
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}
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}
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protected void HandlePanning()
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{
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// You can pan by holding ALT and using left button or NOT holding ALT and using right button. ALT + right is reserved for zooming.
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bool panMode = (!UnityEvent.current.alt && UnityEvent.current.button > 0 || UnityEvent.current.alt && UnityEvent.current.button <= 0);
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if (panMode && GUIUtility.hotControl == 0)
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{
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EditorGUIUtility.AddCursorRect(m_TextureViewRect, MouseCursor.Pan);
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if (UnityEvent.current.type == EventType.MouseDrag)
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{
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m_ScrollPosition -= UnityEvent.current.delta;
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UnityEvent.current.Use();
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}
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}
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//We need to repaint when entering or exiting the pan mode, so the mouse cursor gets refreshed.
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if (
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((UnityEvent.current.type == EventType.MouseUp || UnityEvent.current.type == EventType.MouseDown) && panMode) ||
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(UnityEvent.current.type == EventType.KeyUp || UnityEvent.current.type == EventType.KeyDown) && UnityEvent.current.keyCode == KeyCode.LeftAlt
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)
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{
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Repaint();
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}
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}
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// Bounding values for scrollbars. Changes with zoom, because we want min/max scroll to stop at texture edges.
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protected Rect maxScrollRect
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{
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get
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{
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float halfWidth = m_Texture.width * .5f * m_Zoom;
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float halfHeight = m_Texture.height * .5f * m_Zoom;
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return new Rect(-halfWidth, -halfHeight, m_TextureViewRect.width + halfWidth * 2f, m_TextureViewRect.height + halfHeight * 2f);
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}
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}
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// Max rect in texture space that can ever be visible
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protected Rect maxRect
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{
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get
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{
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float marginW = m_TextureViewRect.width * .5f / GetMinZoom();
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float marginH = m_TextureViewRect.height * .5f / GetMinZoom();
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float left = -marginW;
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float top = -marginH;
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float width = m_Texture.width + marginW * 2f;
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float height = m_Texture.height + marginH * 2f;
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return new Rect(left, top, width, height);
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}
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}
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protected void DrawTexturespaceBackground()
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{
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float size = Mathf.Max(maxRect.width, maxRect.height);
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Vector2 offset = new Vector2(maxRect.xMin, maxRect.yMin);
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float halfSize = size * .5f;
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float alpha = EditorGUIUtility.isProSkin ? 0.15f : 0.08f;
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float gridSize = 8f;
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SpriteEditorUtility.BeginLines(new Color(0f, 0f, 0f, alpha));
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for (float v = 0; v <= size; v += gridSize)
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SpriteEditorUtility.DrawLine(new Vector2(-halfSize + v, halfSize + v) + offset, new Vector2(halfSize + v, -halfSize + v) + offset);
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SpriteEditorUtility.EndLines();
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}
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private float Log2(float x)
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{
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return (float)(System.Math.Log(x) / System.Math.Log(2));
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}
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protected void DrawTexture()
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{
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float mipLevel = Mathf.Min(m_MipLevel, TextureUtil.GetMipmapCount(m_Texture) - 1);
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FilterMode oldFilter = m_Texture.filterMode;
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TextureUtil.SetFilterModeNoDirty(m_Texture, FilterMode.Point);
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if (m_ShowAlpha)
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{
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// check if we have a valid alpha texture
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if (m_TextureAlphaOverride != null)
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EditorGUI.DrawTextureTransparent(m_TextureRect, m_TextureAlphaOverride, ScaleMode.StretchToFill, 0, mipLevel);
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// else use the original texture and display its alpha
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else
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EditorGUI.DrawTextureAlpha(m_TextureRect, m_Texture, ScaleMode.StretchToFill, 0, mipLevel);
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}
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else
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EditorGUI.DrawTextureTransparent(m_TextureRect, m_Texture, ScaleMode.StretchToFill, 0, mipLevel);
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TextureUtil.SetFilterModeNoDirty(m_Texture, oldFilter);
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}
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protected void DrawScreenspaceBackground()
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{
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if (UnityEvent.current.type == EventType.Repaint)
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m_Styles.preBackground.Draw(m_TextureViewRect, false, false, false, false);
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}
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protected void HandleScrollbars()
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{
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Rect horizontalScrollBarPosition = new Rect(m_TextureViewRect.xMin, m_TextureViewRect.yMax, m_TextureViewRect.width, k_ScrollbarMargin);
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m_ScrollPosition.x = GUI.HorizontalScrollbar(horizontalScrollBarPosition, m_ScrollPosition.x, m_TextureViewRect.width, maxScrollRect.xMin, maxScrollRect.xMax);
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Rect verticalScrollBarPosition = new Rect(m_TextureViewRect.xMax, m_TextureViewRect.yMin, k_ScrollbarMargin, m_TextureViewRect.height);
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m_ScrollPosition.y = GUI.VerticalScrollbar(verticalScrollBarPosition, m_ScrollPosition.y, m_TextureViewRect.height, maxScrollRect.yMin, maxScrollRect.yMax);
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}
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protected void SetupHandlesMatrix()
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{
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// Offset from top left to center in view space
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Vector3 handlesPos = new Vector3(m_TextureRect.x, m_TextureRect.yMax, 0f);
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// We flip Y-scale because Unity texture space is bottom-up
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Vector3 handlesScale = new Vector3(zoomLevel, -zoomLevel, 1f);
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// Handle matrix is for converting between view and texture space coordinates, without taking account the scroll position.
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// Scroll position is added separately so we can use it with GUIClip.
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Handles.matrix = Matrix4x4.TRS(handlesPos, Quaternion.identity, handlesScale);
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}
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protected Rect DoAlphaZoomToolbarGUI(Rect area)
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{
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int mipCount = 1;
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if (m_Texture != null)
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mipCount = Mathf.Max(mipCount, TextureUtil.GetMipmapCount(m_Texture));
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Rect drawArea = new Rect(area.width, 0, 0, area.height);
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using (new EditorGUI.DisabledScope(mipCount == 1))
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{
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drawArea.width = m_Styles.largeMip.image.width;
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drawArea.x -= drawArea.width;
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GUI.Box(drawArea, m_Styles.largeMip, m_Styles.preLabel);
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drawArea.width = EditorGUI.kSliderMinW;
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drawArea.x -= drawArea.width;
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m_MipLevel = Mathf.Round(GUI.HorizontalSlider(drawArea, m_MipLevel, mipCount - 1, 0, m_Styles.preSlider, m_Styles.preSliderThumb));
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drawArea.width = m_Styles.smallMip.image.width;
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drawArea.x -= drawArea.width;
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GUI.Box(drawArea, m_Styles.smallMip, m_Styles.preLabel);
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}
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drawArea.width = EditorGUI.kSliderMinW;
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drawArea.x -= drawArea.width;
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zoomLevel = GUI.HorizontalSlider(drawArea, zoomLevel, GetMinZoom(), k_MaxZoom, m_Styles.preSlider, m_Styles.preSliderThumb);
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drawArea.width = EditorGUI.kObjectFieldMiniThumbnailWidth;
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drawArea.x -= drawArea.width + EditorGUI.kSpacing;
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m_ShowAlpha = GUI.Toggle(drawArea, m_ShowAlpha, m_ShowAlpha ? m_Styles.alphaIcon : m_Styles.RGBIcon, "toolbarButton");
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// Returns the area that is not used
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return new Rect(area.x, area.y, drawArea.x, area.height);
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}
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protected void DoTextureGUI()
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{
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if (m_Texture == null)
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return;
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// zoom startup init
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if (m_Zoom < 0f)
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m_Zoom = GetMinZoom();
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// Texture rect in view space
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m_TextureRect = new Rect(
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m_TextureViewRect.width / 2f - (m_Texture.width * m_Zoom / 2f),
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m_TextureViewRect.height / 2f - (m_Texture.height * m_Zoom / 2f),
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(m_Texture.width * m_Zoom),
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(m_Texture.height * m_Zoom)
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);
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HandleScrollbars();
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SetupHandlesMatrix();
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DrawScreenspaceBackground();
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GUIClip.Push(m_TextureViewRect, -m_ScrollPosition, Vector2.zero, false);
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if (UnityEvent.current.type == EventType.Repaint)
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{
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DrawTexturespaceBackground();
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DrawTexture();
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DrawGizmos();
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}
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DoTextureGUIExtras();
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GUIClip.Pop();
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// Handle this after DoTextureGUIExtras in case user wants any event that is handled by Zoom or Panning
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HandleZoom();
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HandlePanning();
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}
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protected virtual void DoTextureGUIExtras()
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{
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}
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protected virtual void DrawGizmos()
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{
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}
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protected void SetNewTexture(Texture2D texture)
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{
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if (texture != m_Texture)
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{
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m_Texture = new Texture2DWrapper(texture);
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m_Zoom = -1;
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m_TextureAlphaOverride = null;
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}
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}
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protected void SetAlphaTextureOverride(Texture2D alphaTexture)
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{
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if (alphaTexture != m_TextureAlphaOverride)
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{
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m_TextureAlphaOverride = new Texture2DWrapper(alphaTexture);
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m_Zoom = -1;
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}
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}
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internal override void OnResized()
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{
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if (m_Texture != null && UnityEvent.current != null)
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HandleZoom();
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base.OnResized();
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}
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internal static void DrawToolBarWidget(ref Rect drawRect, ref Rect toolbarRect, Action<Rect> drawAction)
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{
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toolbarRect.width -= drawRect.width;
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if (toolbarRect.width < 0)
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drawRect.width += toolbarRect.width;
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if (drawRect.width > 0)
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drawAction(drawRect);
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}
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} // class
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}
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