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using UnityEngine;
using UnityEngine.UI;
namespace UnityEditor.UI
{
[CustomEditor(typeof(CanvasScaler), true)]
[CanEditMultipleObjects]
public class CanvasScalerEditor : Editor
{
SerializedProperty m_UiScaleMode;
SerializedProperty m_ScaleFactor;
SerializedProperty m_ReferenceResolution;
SerializedProperty m_ScreenMatchMode;
SerializedProperty m_MatchWidthOrHeight;
SerializedProperty m_PhysicalUnit;
SerializedProperty m_FallbackScreenDPI;
SerializedProperty m_DefaultSpriteDPI;
SerializedProperty m_DynamicPixelsPerUnit;
SerializedProperty m_ReferencePixelsPerUnit;
const int kSliderEndpointLabelsHeight = 12;
private class Styles
{
public GUIContent matchContent;
public GUIContent widthContent;
public GUIContent heightContent;
public GUIContent uiScaleModeContent;
public GUIStyle leftAlignedLabel;
public GUIStyle rightAlignedLabel;
public Styles()
{
matchContent = new GUIContent("Match");
widthContent = new GUIContent("Width");
heightContent = new GUIContent("Height");
uiScaleModeContent = new GUIContent("UI Scale Mode");
leftAlignedLabel = new GUIStyle(EditorStyles.label);
rightAlignedLabel = new GUIStyle(EditorStyles.label);
rightAlignedLabel.alignment = TextAnchor.MiddleRight;
}
}
private static Styles s_Styles;
protected virtual void OnEnable()
{
m_UiScaleMode = serializedObject.FindProperty("m_UiScaleMode");
m_ScaleFactor = serializedObject.FindProperty("m_ScaleFactor");
m_ReferenceResolution = serializedObject.FindProperty("m_ReferenceResolution");
m_ScreenMatchMode = serializedObject.FindProperty("m_ScreenMatchMode");
m_MatchWidthOrHeight = serializedObject.FindProperty("m_MatchWidthOrHeight");
m_PhysicalUnit = serializedObject.FindProperty("m_PhysicalUnit");
m_FallbackScreenDPI = serializedObject.FindProperty("m_FallbackScreenDPI");
m_DefaultSpriteDPI = serializedObject.FindProperty("m_DefaultSpriteDPI");
m_DynamicPixelsPerUnit = serializedObject.FindProperty("m_DynamicPixelsPerUnit");
m_ReferencePixelsPerUnit = serializedObject.FindProperty("m_ReferencePixelsPerUnit");
}
public override void OnInspectorGUI()
{
if (s_Styles == null)
s_Styles = new Styles();
bool allAreRoot = true;
bool showWorldDiffers = false;
bool showWorld = ((target as CanvasScaler).GetComponent<Canvas>().renderMode == RenderMode.WorldSpace);
for (int i = 0; i < targets.Length; i++)
{
CanvasScaler scaler = targets[i] as CanvasScaler;
Canvas canvas = scaler.GetComponent<Canvas>();
if (!canvas.isRootCanvas)
{
allAreRoot = false;
break;
}
if (showWorld && canvas.renderMode != RenderMode.WorldSpace || !showWorld && canvas.renderMode == RenderMode.WorldSpace)
{
showWorldDiffers = true;
break;
}
}
if (!allAreRoot)
{
EditorGUILayout.HelpBox("Non-root Canvases will not be scaled.", MessageType.Warning);
return;
}
serializedObject.Update();
EditorGUI.showMixedValue = showWorldDiffers;
using (new EditorGUI.DisabledScope(showWorld || showWorldDiffers))
{
if (showWorld || showWorldDiffers)
{
EditorGUILayout.Popup(s_Styles.uiScaleModeContent.text, 0, new[] { "World" });
}
else
{
EditorGUILayout.PropertyField(m_UiScaleMode, s_Styles.uiScaleModeContent);
}
}
EditorGUI.showMixedValue = false;
if (!showWorldDiffers && !(!showWorld && m_UiScaleMode.hasMultipleDifferentValues))
{
EditorGUILayout.Space();
// World Canvas
if (showWorld)
{
EditorGUILayout.PropertyField(m_DynamicPixelsPerUnit);
}
// Constant pixel size
else if (m_UiScaleMode.enumValueIndex == (int)CanvasScaler.ScaleMode.ConstantPixelSize)
{
EditorGUILayout.PropertyField(m_ScaleFactor);
}
// Scale with screen size
else if (m_UiScaleMode.enumValueIndex == (int)CanvasScaler.ScaleMode.ScaleWithScreenSize)
{
EditorGUILayout.PropertyField(m_ReferenceResolution);
EditorGUILayout.PropertyField(m_ScreenMatchMode);
if (m_ScreenMatchMode.enumValueIndex == (int)CanvasScaler.ScreenMatchMode.MatchWidthOrHeight && !m_ScreenMatchMode.hasMultipleDifferentValues)
{
Rect r = EditorGUILayout.GetControlRect(true, EditorGUIUtility.singleLineHeight + kSliderEndpointLabelsHeight);
DualLabeledSlider(r, m_MatchWidthOrHeight, s_Styles.matchContent, s_Styles.widthContent, s_Styles.heightContent);
}
}
// Constant physical size
else if (m_UiScaleMode.enumValueIndex == (int)CanvasScaler.ScaleMode.ConstantPhysicalSize)
{
EditorGUILayout.PropertyField(m_PhysicalUnit);
EditorGUILayout.PropertyField(m_FallbackScreenDPI);
EditorGUILayout.PropertyField(m_DefaultSpriteDPI);
}
EditorGUILayout.PropertyField(m_ReferencePixelsPerUnit);
}
serializedObject.ApplyModifiedProperties();
}
private static void DualLabeledSlider(Rect position, SerializedProperty property, GUIContent mainLabel, GUIContent labelLeft, GUIContent labelRight)
{
position.height = EditorGUIUtility.singleLineHeight;
Rect pos = position;
position.y += 12;
position.xMin += EditorGUIUtility.labelWidth;
position.xMax -= EditorGUIUtility.fieldWidth;
GUI.Label(position, labelLeft, s_Styles.leftAlignedLabel);
GUI.Label(position, labelRight, s_Styles.rightAlignedLabel);
EditorGUI.PropertyField(pos, property, mainLabel);
}
}
}
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