diff options
Diffstat (limited to 'Lib/idlelib/CodeContext.py')
| -rw-r--r-- | Lib/idlelib/CodeContext.py | 72 |
1 files changed, 19 insertions, 53 deletions
diff --git a/Lib/idlelib/CodeContext.py b/Lib/idlelib/CodeContext.py index 28e99c5..420ec33 100644 --- a/Lib/idlelib/CodeContext.py +++ b/Lib/idlelib/CodeContext.py @@ -10,6 +10,7 @@ not open blocks are not shown in the context hints pane. """ import Tkinter +from Tkconstants import TOP, LEFT, X, W, SUNKEN from configHandler import idleConf import re from sys import maxint as INFINITY @@ -24,7 +25,6 @@ getspacesfirstword =\ class CodeContext: menudefs = [('options', [('!Code Conte_xt', '<<toggle-code-context>>')])] - context_depth = idleConf.GetOption("extensions", "CodeContext", "numlines", type="int", default=3) bgcolor = idleConf.GetOption("extensions", "CodeContext", @@ -54,66 +54,33 @@ class CodeContext: def toggle_code_context_event(self, event=None): if not self.label: - # The following code attempts to figure out the required border - # width and vertical padding required for the CodeContext widget - # to be perfectly aligned with the text in the main Text widget. - # This is done by retrieving the appropriate attributes from the - # editwin.text and editwin.text_frame widgets. + # Calculate the border width and horizontal padding required to + # align the context with the text in the main Text widget. # # All values are passed through int(str(<value>)), since some - # values may be pixel objects, which can't simply be added added - # to ints. - # - # This code is considered somewhat unstable since it relies on - # some of Tk's inner workings. However its effect is merely - # cosmetic; failure will only cause the CodeContext text to be - # somewhat misaligned with the text in the main Text widget. - # - # To avoid possible errors, all references to the inner workings - # of Tk are executed inside try/except blocks. - - widgets_for_width_calc = self.editwin.text, self.editwin.text_frame - - # calculate the required vertical padding + # values may be pixel objects, which can't simply be added to ints. + widgets = self.editwin.text, self.editwin.text_frame + # Calculate the required vertical padding padx = 0 - for widget in widgets_for_width_calc: - try: - # retrieve the "padx" attribte from widget's pack info - padx += int(str( widget.pack_info()['padx'] )) - except: - pass - try: - # retrieve the widget's "padx" attribte - padx += int(str( widget.cget('padx') )) - except: - pass - - # calculate the required border width - border_width = 0 - for widget in widgets_for_width_calc: - try: - # retrieve the widget's "border" attribte - border_width += int(str( widget.cget('border') )) - except: - pass - + for widget in widgets: + padx += int(str( widget.pack_info()['padx'] )) + padx += int(str( widget.cget('padx') )) + # Calculate the required border width + border = 0 + for widget in widgets: + border += int(str( widget.cget('border') )) self.label = Tkinter.Label(self.editwin.top, text="\n" * (self.context_depth - 1), - anchor="w", justify="left", + anchor=W, justify=LEFT, font=self.textfont, bg=self.bgcolor, fg=self.fgcolor, width=1, #don't request more than we get - padx=padx, #line up with text widget - border=border_width, #match border width - relief="sunken", - ) - - # CodeContext's label widget is packed before and above the - # text_frame widget, thus ensuring that it will appear directly - # above it. - self.label.pack(side="top", fill="x", expand=False, + padx=padx, border=border, + relief=SUNKEN) + # Pack the label widget before and above the text_frame widget, + # thus ensuring that it will appear directly above text_frame + self.label.pack(side=TOP, fill=X, expand=False, before=self.editwin.text_frame) - else: self.label.destroy() self.label = None @@ -190,7 +157,6 @@ class CodeContext: stopindent) self.info.extend(lines) self.topvisible = new_topvisible - # empty lines in context pane: context_strings = [""] * max(0, self.context_depth - len(self.info)) # followed by the context hint lines: |