[Commit-gnuradio] [gnuradio] 06/08: grc: fix bug #856: paging/scrolling from keyboard

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jcorgan pushed a commit to branch maint
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commit 34f03132741fe1f7aa4e3e29272dea1d25526fbb
Author: Sebastian Koslowski <address@hidden>
Date:   Tue Apr 5 17:58:55 2016 +0200

    grc: fix bug #856: paging/scrolling from keyboard
---
 grc/gui/NotebookPage.py | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/grc/gui/NotebookPage.py b/grc/gui/NotebookPage.py
index 481aca4..4c11215 100644
--- a/grc/gui/NotebookPage.py
+++ b/grc/gui/NotebookPage.py
@@ -26,9 +26,6 @@ from Constants import MIN_WINDOW_WIDTH, MIN_WINDOW_HEIGHT
 from DrawingArea import DrawingArea
 import os
 
-############################################################
-## Notebook Page
-############################################################
 
 class NotebookPage(gtk.HBox):
     """A page in the notebook."""
@@ -79,6 +76,7 @@ class NotebookPage(gtk.HBox):
         self.scrolled_window = gtk.ScrolledWindow()
         self.scrolled_window.set_size_request(MIN_WINDOW_WIDTH, 
MIN_WINDOW_HEIGHT)
         self.scrolled_window.set_policy(gtk.POLICY_AUTOMATIC, 
gtk.POLICY_AUTOMATIC)
+        self.scrolled_window.connect('key-press-event', 
self._handle_scroll_window_key_press)
         self.drawing_area = DrawingArea(self.get_flow_graph())
         self.scrolled_window.add_with_viewport(self.get_drawing_area())
         self.pack_start(self.scrolled_window)
@@ -88,6 +86,15 @@ class NotebookPage(gtk.HBox):
 
     def get_drawing_area(self): return self.drawing_area
 
+    def _handle_scroll_window_key_press(self, widget, event):
+        """forward Ctrl-PgUp/Down to NotebookPage (switch fg instead of horiz. 
scroll"""
+        is_ctrl_pg = (
+            event.state & gtk.gdk.CONTROL_MASK and
+            event.keyval in (gtk.keysyms.Page_Up, gtk.keysyms.Page_Down)
+        )
+        if is_ctrl_pg:
+            return self.get_parent().event(event)
+
     def get_generator(self):
         """
         Get the generator object for this flow graph.