public override void OnPreviewGUI(Rect r, GUIStyle background)
{
CCGradient gradient = (CCGradient)target;
if (r.width <= 1f)
{
// events, no drawing
return;
}
if (r.width == 40f)
{
// draw the thumbnail
gradient.WriteToTexture(0f, 1f, thumbTexture);
thumbTexture.Apply();
CCEditorUtility.DrawTexture(r, thumbTexture, previewMode);
return;
}
// draw the preview
if ((int)r.width != previewTexture.width)
{
previewTexture.Resize((int)r.width, 1);
}
gradient.WriteToTexture(previewFrom, previewTo, previewTexture);
previewTexture.Apply();
CCEditorUtility.DrawTexture(r, previewTexture, previewMode);
}
void OnEnable()
{
gradient = Selection.activeObject as CCGradient;
minimum = EditorPrefs.GetFloat(minimumKey);
maximum = EditorPrefs.GetFloat(maximumKey, 1f);
pixels = EditorPrefs.GetInt(pixelsKey, 16);
bilinearPreview = EditorPrefs.GetBool(bilinearPreviewKey, true);
texture = new Texture2D(pixels, 1, TextureFormat.ARGB32, false);
texture.hideFlags = HideFlags.HideAndDontSave;
texture.wrapMode = TextureWrapMode.Clamp;
texture.filterMode = bilinearPreview ? FilterMode.Bilinear : FilterMode.Point;
if (gradient != null)
{
gradient.WriteToTexture(minimum, maximum, texture);
texture.Apply();
}
}
void OnGUI()
{
CCGradient oldGradient = gradient;
gradient = (CCGradient)EditorGUILayout.ObjectField("Gradient", gradient, typeof(CCGradient), false);
bool updateTexture = gradient != oldGradient;
if (gradient == null)
{
return;
}
float oldValue = minimum;
minimum = EditorGUILayout.FloatField("Minimum", minimum);
if (minimum != oldValue)
{
EditorPrefs.SetFloat(minimumKey, minimum);
updateTexture = true;
}
oldValue = maximum;
maximum = EditorGUILayout.FloatField("Maximum", maximum);
if (maximum != oldValue)
{
EditorPrefs.SetFloat(maximumKey, maximum);
updateTexture = true;
}
int oldPixels = pixels;
pixels = Mathf.Max(1, EditorGUILayout.IntField("Pixels", pixels));
if (pixels != oldPixels)
{
texture.Resize(pixels, 1);
EditorPrefs.SetInt(pixelsKey, pixels);
updateTexture = true;
}
bool oldToggle = bilinearPreview;
bilinearPreview = EditorGUILayout.Toggle("Bilinear Preview", bilinearPreview);
if (bilinearPreview != oldToggle)
{
EditorPrefs.SetBool(bilinearPreviewKey, bilinearPreview);
texture.filterMode = bilinearPreview ? FilterMode.Bilinear : FilterMode.Point;
}
if (updateTexture)
{
gradient.WriteToTexture(minimum, maximum, texture);
texture.Apply();
}
if (GUILayout.Button("Export PNG file"))
{
string filePath = CCEditorUtility.SaveFilePanelInSameFolder("Save Color Gradient", gradient.name + " map", "png", gradient);
if (filePath.Length > 0)
{
File.WriteAllBytes(filePath, texture.EncodeToPNG());
AssetDatabase.Refresh();
Close();
}
}
CCEditorUtility.DrawTexture(new Rect(2f, 130f, position.width - 4f, position.height - 132f), texture);
}