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118 lines
3.7 KiB
C#
118 lines
3.7 KiB
C#
#if UNITY_EDITOR
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using System;
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using UnityEngine;
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using UnityEditor;
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using System.Collections.Generic;
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using System.Reflection;
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namespace MoreMountains.Tools
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{
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[CustomPropertyDrawer (typeof(MMInformationAttribute))]
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/// <summary>
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/// This class allows the display of a message box (warning, info, error...) next to a property (before or after)
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/// </summary>
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public class MMInformationAttributeDrawer : PropertyDrawer
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{
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// determines the space after the help box, the space before the text box, and the width of the help box icon
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const int spaceBeforeTheTextBox = 5;
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const int spaceAfterTheTextBox = 10;
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const int iconWidth = 55;
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MMInformationAttribute informationAttribute { get { return ((MMInformationAttribute)attribute); } }
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#if UNITY_EDITOR
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/// <summary>
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/// OnGUI, displays the property and the textbox in the specified order
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/// </summary>
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/// <param name="rect">Rect.</param>
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/// <param name="prop">Property.</param>
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/// <param name="label">Label.</param>
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public override void OnGUI (Rect rect, SerializedProperty prop, GUIContent label)
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{
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if (HelpEnabled())
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{
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EditorStyles.helpBox.richText=true ;
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if (!informationAttribute.MessageAfterProperty)
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{
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// we position the message before the property
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rect.height = DetermineTextboxHeight(informationAttribute.Message);
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EditorGUI.HelpBox (rect, informationAttribute.Message, informationAttribute.Type);
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rect.y += rect.height + spaceBeforeTheTextBox;
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EditorGUI.PropertyField(rect, prop, label, true);
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}
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else
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{
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// we position the property first, then the message
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rect.height = GetPropertyHeight(prop,label);
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EditorGUI.PropertyField(rect, prop, label, true);
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rect.height = DetermineTextboxHeight(informationAttribute.Message);
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// we add the complete property height (property + helpbox, as overridden in this very script), and substract both to get just the property
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rect.y += GetPropertyHeight(prop,label) - DetermineTextboxHeight(informationAttribute.Message) - spaceAfterTheTextBox;
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EditorGUI.HelpBox (rect, informationAttribute.Message, informationAttribute.Type);
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}
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}
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else
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{
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EditorGUI.PropertyField(rect, prop, label, true);
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}
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}
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#endif
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/// <summary>
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/// Returns the complete height of the whole block (property + help text)
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/// </summary>
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/// <returns>The block height.</returns>
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/// <param name="property">Property.</param>
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/// <param name="label">Label.</param>
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public override float GetPropertyHeight(SerializedProperty property, GUIContent label)
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{
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if (HelpEnabled())
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{
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return EditorGUI.GetPropertyHeight(property) + DetermineTextboxHeight(informationAttribute.Message) + spaceAfterTheTextBox + spaceBeforeTheTextBox;
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}
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else
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{
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return EditorGUI.GetPropertyHeight(property);
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}
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}
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/// <summary>
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/// Checks the editor prefs to see if help is enabled or not
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/// </summary>
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/// <returns><c>true</c>, if enabled was helped, <c>false</c> otherwise.</returns>
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protected virtual bool HelpEnabled()
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{
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bool helpEnabled = false;
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if (EditorPrefs.HasKey("MMShowHelpInInspectors"))
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{
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if (EditorPrefs.GetBool("MMShowHelpInInspectors"))
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{
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helpEnabled = true;
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}
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}
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return helpEnabled;
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}
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/// <summary>
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/// Determines the height of the textbox.
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/// </summary>
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/// <returns>The textbox height.</returns>
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/// <param name="message">Message.</param>
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protected virtual float DetermineTextboxHeight(string message)
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{
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GUIStyle style = new GUIStyle(EditorStyles.helpBox);
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style.richText=true;
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float newHeight = style.CalcHeight(new GUIContent(message),EditorGUIUtility.currentViewWidth - iconWidth);
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return newHeight;
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}
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}
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}
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#endif |