From 6a1deb9b781890f9a62a6f6ce608856c1fc9e720 Mon Sep 17 00:00:00 2001
From: DH4
Date: Tue, 6 Jun 2017 04:04:42 -0500
Subject: Add checkerboard for transpart frames.

---
 background.png    | Bin 3711 -> 45367 bytes
 preview_thread.py |   8 +++++++-
 video_thread.py   |   8 +++++++-
 3 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/background.png b/background.png
index 7a33158..fb58593 100644
Binary files a/background.png and b/background.png differ
diff --git a/preview_thread.py b/preview_thread.py
index 5116707..04683ae 100644
--- a/preview_thread.py
+++ b/preview_thread.py
@@ -6,6 +6,8 @@ import core
 import time
 from queue import Queue, Empty
 import numpy
+import os
+from copy import copy
 
 class Worker(QtCore.QObject):
 
@@ -19,6 +21,9 @@ class Worker(QtCore.QObject):
     self.queue = queue
     self.core.settings = parent.settings
     self.stackedWidget = parent.window.stackedWidget
+    self.background = Image.new("RGBA", (1920, 1080),(0,0,0,0))
+    self.background.paste(Image.open(os.path.join(os.path.dirname(os.path.realpath(__file__)),"background.png")))
+    
 
 
   @pyqtSlot(str, list)
@@ -41,7 +46,8 @@ class Worker(QtCore.QObject):
 
       width = int(self.core.settings.value('outputWidth'))
       height = int(self.core.settings.value('outputHeight'))
-      frame = Image.new("RGBA", (width, height),(0,0,0,0))
+      frame = copy(self.background)
+      frame = frame.resize((width,height))
 
       components = nextPreviewInformation["components"]
       for component in reversed(components):
diff --git a/video_thread.py b/video_thread.py
index ac4162c..e880263 100644
--- a/video_thread.py
+++ b/video_thread.py
@@ -63,10 +63,16 @@ class Worker(QtCore.QObject):
             self.bgI += 1
 
     def previewDispatch(self):
+        background = Image.new("RGBA", (1920, 1080),(0,0,0,0))
+        background.paste(Image.open(os.path.join(os.path.dirname(os.path.realpath(__file__)), "background.png")))
+        background = background.resize((self.width, self.height))
+
         while not self.stopped:
             i = self.previewQueue.get()
             if time.time() - self.lastPreview >= 0.06 or i[0] == 0:
-                self._image = ImageQt(i[1])
+                image = copy(background)
+                image = Image.alpha_composite(image, i[1])
+                self._image = ImageQt(image)
                 self.imageCreated.emit(QtGui.QImage(self._image))
                 self.lastPreview = time.time()
 
-- 
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