gui: add image applet

artiq/applets/image.py

@@ -0,0 +1,29 @@
+#!/usr/bin/env python3.5
+
+import numpy as np
+import PyQt5  # make sure pyqtgraph imports Qt5
+import pyqtgraph
+
+from artiq.applets.simple import SimpleApplet
+
+
+class Image(pyqtgraph.ImageView):
+    def __init__(self, args):
+        pyqtgraph.ImageView.__init__(self)
+        self.args = args
+
+    def data_changed(self, data, mods):
+        try:
+            img = data[self.args.img][1]
+        except KeyError:
+            return
+        self.setImage(img)
+
+
+def main():
+    applet = SimpleApplet(Image)
+    applet.add_dataset("img", "image data (2D numpy array)")
+    applet.run()
+
+if __name__ == "__main__":
+    main()

artiq/gui/applets.py

@@ -185,6 +185,8 @@ _templates = [
                        "--embed {ipc_address} X_DATASET "
                        "HIST_BIN_BOUNDARIES_DATASET "
                        "HISTS_COUNTS_DATASET"),
+    ("Image", "{python} -m artiq.applets.image "
+                  "--embed {ipc_address} IMG_DATASET"),
 ]