getXXXBg() Function #373

Added new function for getting the BG of a widget, and use it in
accessibility #328

appJar/appjar.py

@@ -2741,6 +2741,9 @@ def getWidget(self, kind, name, val=None):
         if val is not None: name+= "-" + val
         return self.widgetManager.get(kind, name)
 
+    def _getWidgetBg(self, kind, name, val=None):
+        return self.getWidget(kind, name, val).cget("bg")
+
     def addWidget(self, title, widg, row=None, column=0, colspan=0, rowspan=0):
         self.widgetManager.verify(self.Widgets.Widget, title)
         self._positionWidget(widg, row, column, colspan, rowspan)
@@ -3253,6 +3256,11 @@ def _buildConfigFuncs(self):
                 str(k) + ", name, val)")
             exec("gui.get" + v + "Widget=get" + v + "Widget")
 
+            exec( "def get" + v +
+                "Bg(self, name, val=None): return self._getWidgetBg(" +
+                str(k) + ", name, val)")
+            exec("gui.get" + v + "Bg=get" + v + "Bg")
+
 #####################################
 #  FUNCTION to hide/show/remove widgets
 #####################################

examples/issues/issue328.py

@@ -3,8 +3,8 @@
 from appJar import gui
 
 def close(): app.hideSubWindow("Accessibility")
-def changeFg(): app.label("fg", bg=app.colourBox(app.getLabelWidget("fg").cget("bg")))
-def changeBg(): app.label("bg", bg=app.colourBox(app.getLabelWidget("bg").cget("bg")))
+def changeFg(): app.label("fg", bg=app.colourBox(app.getLabelBg("fg")))
+def changeBg(): app.label("bg", bg=app.colourBox(app.getLabelBg("bg")))
 
 def settings():
     font = {"underline":app.check("Underline"), "overstrike":app.check("Overstrike")}
@@ -15,8 +15,8 @@ def settings():
     if app.option("Size:") is not None: font["size"] = app.option("Size:")
 
     app.font = font
-    app.bg = app.getLabelWidget("bg").cget("bg")
-    app.fg = app.getLabelWidget("fg").cget("bg")
+    app.bg = app.getLabelBg("bg")
+    app.fg = app.getLabelBg("fg")
 
 with gui("COLOUR TEST", "400x400") as app:
     app.label("Some text")