public override void OnPreviewGUI(Rect r, GUIStyle background)
{
var isRepainting = Event.current.type == EventType.Repaint;
if (isRepainting)
{
background.Draw(r, false, false, false, false);
}
VideoClipImporter importer = (VideoClipImporter)target;
if (m_IsPlaying && !importer.isPlayingPreview)
{
importer.PlayPreview();
}
else if (!m_IsPlaying && importer.isPlayingPreview)
{
importer.StopPreview();
}
Texture image = importer.GetPreviewTexture();
if (!image || image.width == 0 || image.height == 0)
{
return;
}
// Compensate spatial quality zooming, if any.
float previewWidth = image.width;
float previewHeight = image.height;
var activeSettings =
importer.GetTargetSettings(BuildPipeline.GetBuildTargetGroup(EditorUserBuildSettings.activeBuildTarget).ToString());
if (activeSettings == null)
{
activeSettings = importer.defaultTargetSettings;
}
if (activeSettings.enableTranscoding)
{
VideoResizeMode resizeMode = activeSettings.resizeMode;
previewWidth = importer.GetResizeWidth(resizeMode);
previewHeight = importer.GetResizeHeight(resizeMode);
}
if (importer.pixelAspectRatioDenominator > 0)
{
previewWidth *= (float)importer.pixelAspectRatioNumerator /
(float)importer.pixelAspectRatioDenominator;
}
float zoomLevel = 1.0f;
if ((r.width / previewWidth * previewHeight) > r.height)
{
zoomLevel = r.height / previewHeight;
}
else
{
zoomLevel = r.width / previewWidth;
}
zoomLevel = Mathf.Clamp01(zoomLevel);
Rect wantedRect = new Rect(r.x, r.y, previewWidth * zoomLevel, previewHeight * zoomLevel);
PreviewGUI.BeginScrollView(
r, m_Position, wantedRect, "PreHorizontalScrollbar", "PreHorizontalScrollbarThumb");
EditorGUI.DrawTextureTransparent(wantedRect, image, ScaleMode.StretchToFill);
m_Position = PreviewGUI.EndScrollView();
if (m_IsPlaying && isRepainting)
{
GUIView.current.Repaint();
}
}
