Author: bugman
Date: Wed Oct 15 16:56:12 2014
New Revision: 26289
URL: http://svn.gna.org/viewcvs/relax?rev=26289&view=rev
Log:
Complete redesign of the following of text in the relax controller window in
the GUI.
The current design for some reason no longer worked very often, and there would
be many situations
where the scrolling to follow the text output would stop and could never be
recovered. Therefore
this feature has been redesigned.
In the LogCtrl element of the relax controller, which displays the relax output
messages, the at_end
class boolean variable has been introduced. It defaults to True. The
following events will turn it
off: Arrow keys, Home key, End key, Ctrl-Home key, Mouse button clicks, Mouse
wheel scrolling,
Window thumbtrack scrolling (the side scrollbar), finding text, the pop up menu
'Go to start',
and Select all (menu or Ctrl-A). It will only be turned on in two cases: The
pop up menu 'Go to
end', and if the caret is on the final line (caused by Ctrl-End, Mouse wheel
scrolling, Page Down,
Down arrow, Window thumbtrack scrolling, etc.).
Three new methods have been introduced to handle certain events:
capture_mouse() for mouse button
clicks, capture_mouse_wheel() for mouse wheel scrolling, and capture_scroll for
window thumbtrack
scrolling.
Modified:
trunk/gui/controller.py
Modified: trunk/gui/controller.py
URL:
http://svn.gna.org/viewcvs/relax/trunk/gui/controller.py?rev=26289&r1=26288&r2=26289&view=diff
==============================================================================
--- trunk/gui/controller.py (original)
+++ trunk/gui/controller.py Wed Oct 15 16:56:12 2014
@@ -599,6 +599,9 @@
# Initialise the base class.
super(LogCtrl, self).__init__(parent, id=id, pos=pos, size=size,
style=style, name=name)
+ # Flag for scrolling to the bottom.
+ self.at_end = True
+
# Turn on line wrapping.
self.SetWrapMode(wx.stc.STC_WRAP_WORD)
@@ -652,7 +655,10 @@
self.Bind(wx.EVT_FIND_NEXT, self.find)
self.Bind(wx.EVT_FIND_CLOSE, self.find_close)
self.Bind(wx.EVT_KEY_DOWN, self.capture_keys)
+ self.Bind(wx.EVT_MOUSE_EVENTS, self.capture_mouse)
+ self.Bind(wx.EVT_MOUSEWHEEL, self.capture_mouse_wheel)
self.Bind(wx.EVT_RIGHT_DOWN, self.pop_up_menu)
+ self.Bind(wx.EVT_SCROLLWIN_THUMBTRACK, self.capture_scroll)
self.Bind(wx.EVT_MENU, self.find_open, id=self.menu_id_find)
self.Bind(wx.EVT_MENU, self.on_copy, id=self.menu_id_copy)
self.Bind(wx.EVT_MENU, self.on_select_all, id=self.menu_id_select_all)
@@ -690,10 +696,12 @@
# Allow caret movements (arrow keys, home, end).
if event.GetKeyCode() in [312, 313, 314, 315, 316, 317]:
+ self.at_end = False
event.Skip()
# Allow scrolling (pg up, pg dn):
if event.GetKeyCode() in [366, 367]:
+ self.at_end = False
event.Skip()
# Zooming.
@@ -705,10 +713,62 @@
self.on_zoom_in(event)
# Jump to start or end (Ctrl-Home and Ctrl-End).
- if event.ControlDown() and event.GetKeyCode() == 316:
+ if event.ControlDown() and event.GetKeyCode() == 313:
self.on_goto_start(event)
- elif event.ControlDown() and event.GetKeyCode() == 317:
+ elif event.ControlDown() and event.GetKeyCode() == 312:
self.on_goto_end(event)
+
+
+ def capture_mouse(self, event):
+ """Control the mouse events.
+
+ @param event: The wx event.
+ @type event: wx event
+ """
+
+ # Stop following the end if a mouse button is clicked.
+ if event.ButtonDown():
+ self.at_end = False
+
+ # Continue with the event.
+ event.Skip()
+
+
+ def capture_mouse_wheel(self, event):
+ """Control the mouse wheel events.
+
+ @param event: The wx event.
+ @type event: wx event
+ """
+
+ # Stop following the end on all events.
+ self.at_end = False
+
+ # Move the caret with the scroll, to prevent following the end.
+ scroll = event.GetLinesPerAction()
+ if event.GetWheelRotation() > 0.0:
+ scroll *= -1
+ self.GotoLine(self.GetCurrentLine() + scroll)
+
+ # Continue with the event.
+ event.Skip()
+
+
+ def capture_scroll(self, event):
+ """Control the window scrolling events.
+
+ @param event: The wx event.
+ @type event: wx event
+ """
+
+ # Stop following the end on all events.
+ self.at_end = False
+
+ # Move the caret with the scroll (at the bottom), to prevent following
the end.
+ self.GotoLine(event.GetPosition() + self.LinesOnScreen() - 1)
+
+ # Continue with the event.
+ event.Skip()
def clear(self):
@@ -772,8 +832,11 @@
# Found text.
else:
- # Move to the line.
+ # Make the text visible.
self.EnsureCaretVisible()
+
+ # Stop following the end on all events.
+ self.at_end = False
def find_close(self, event):
@@ -796,6 +859,9 @@
@param event: The wx event.
@type event: wx event
"""
+
+ # Turn off the end flag.
+ self.at_end = False
# Initialise the dialog if it doesn't exist.
if self.find_dlg == None:
@@ -814,6 +880,9 @@
@param event: The wx event.
@type event: wx event
"""
+
+ # Turn off the end flag.
+ self.at_end = False
# Text has already been set.
if self.find_data.GetFindString():
@@ -936,6 +1005,9 @@
@type event: wx event
"""
+ # Turn on the end flag.
+ self.at_end = True
+
# Go to the end.
self.GotoPos(self.GetLength())
@@ -947,6 +1019,9 @@
@type event: wx event
"""
+ # Turn off the end flag.
+ self.at_end = False
+
# Go to the start.
self.GotoPos(-1)
@@ -957,6 +1032,9 @@
@param event: The wx event.
@type event: wx event
"""
+
+ # Turn off the end flag.
+ self.at_end = False
# Select all text in the control.
self.SelectAll()
@@ -1027,17 +1105,16 @@
def write(self):
"""Write the text in the log queue to the log control."""
+ # At the end?
+ if self.GetScrollRange(wx.VERTICAL) - self.GetCurrentLine() <= 1:
+ self.at_end = True
+
# Get the text.
string_list, stream_list = self.get_text()
# Nothing to do.
if len(string_list) == 1 and string_list[0] == '':
return
-
- # At the end?
- at_end = False
- if self.GetScrollPos(wx.VERTICAL) == self.GetScrollRange(wx.VERTICAL)
- self.LinesOnScreen():
- at_end = True
# Turn of the read only state.
self.SetReadOnly(False)
@@ -1073,8 +1150,8 @@
self.limit_scrollback()
# Stay at the end.
- if at_end:
- self.ScrollToLine(self.GetLineCount())
+ if self.at_end:
+ self.DocumentEnd()
# Make the control read only again.
self.SetReadOnly(True)
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