add more string to translate

labelme/widgets/canvas.py

@@ -232,7 +232,7 @@ class Canvas(QtWidgets.QWidget):
         # - Highlight shapes
         # - Highlight vertex
         # Update shape/vertex fill and tooltip value accordingly.
-        self.setToolTip("Image")
+        self.setToolTip(self.tr("Image"))
         for shape in reversed([s for s in self.shapes if self.isVisible(s)]):
             # Look for a nearby vertex to highlight. If that fails,
             # check if we happen to be inside a shape.
@@ -246,7 +246,7 @@ class Canvas(QtWidgets.QWidget):
                 self.hEdge = index_edge
                 shape.highlightVertex(index, shape.MOVE_VERTEX)
                 self.overrideCursor(CURSOR_POINT)
-                self.setToolTip("Click & drag to move point")
+                self.setToolTip(self.tr("Click & drag to move point"))
                 self.setStatusTip(self.toolTip())
                 self.update()
                 break
@@ -257,7 +257,7 @@ class Canvas(QtWidgets.QWidget):
                 self.hShape = shape
                 self.hEdge = index_edge
                 self.setToolTip(
-                    "Click & drag to move shape '%s'" % shape.label)
+                    self.tr("Click & drag to move shape '%s'") % shape.label)
                 self.setStatusTip(self.toolTip())
                 self.overrideCursor(CURSOR_GRAB)
                 self.update()