linux-kernel - Re: [PATCH 1/6] perf scripts python: exported-sql-viewer.py: Fix error when shrinking / enlarging font

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Date:   Mon, 13 May 2019 16:57:32 -0300
From:   Arnaldo Carvalho de Melo <arnaldo.melo@...il.com>
To:     Adrian Hunter <adrian.hunter@...el.com>
Cc:     Jiri Olsa <jolsa@...hat.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/6] perf scripts python: exported-sql-viewer.py: Fix
 error when shrinking / enlarging font

Em Fri, May 03, 2019 at 03:08:23PM +0300, Adrian Hunter escreveu:
> Fix the following error if shrink / enlarge font is used with the help
> window.
> 
>   Traceback (most recent call last):
>     File "tools/perf/scripts/python/exported-sql-viewer.py", line 2791, in ShrinkFont
>       ShrinkFont(win.view)
>   AttributeError: 'HelpWindow' object has no attribute 'view'

Humm, this is kinda frustrating, I tried it and expected it to either
enlarge/shrink or tell me that that is not possible, and why :-\

Anyway, if you think this is the best approach, applied.

- Arnaldo
 
> Signed-off-by: Adrian Hunter <adrian.hunter@...el.com>
> ---
>  tools/perf/scripts/python/exported-sql-viewer.py | 14 ++++++++++----
>  1 file changed, 10 insertions(+), 4 deletions(-)
> 
> diff --git a/tools/perf/scripts/python/exported-sql-viewer.py b/tools/perf/scripts/python/exported-sql-viewer.py
> index c586abfb2b46..289e8dbd1444 100755
> --- a/tools/perf/scripts/python/exported-sql-viewer.py
> +++ b/tools/perf/scripts/python/exported-sql-viewer.py
> @@ -2770,6 +2770,14 @@ class MainWindow(QMainWindow):
>  		help_menu = menu.addMenu("&Help")
>  		help_menu.addAction(CreateAction("&Exported SQL Viewer Help", "Helpful information", self.Help, self, QKeySequence.HelpContents))
>  
> +	def Try(self, fn):
> +		win = self.mdi_area.activeSubWindow()
> +		if win:
> +			try:
> +				fn(win.view)
> +			except:
> +				pass
> +
>  	def Find(self):
>  		win = self.mdi_area.activeSubWindow()
>  		if win:
> @@ -2787,12 +2795,10 @@ class MainWindow(QMainWindow):
>  				pass
>  
>  	def ShrinkFont(self):
> -		win = self.mdi_area.activeSubWindow()
> -		ShrinkFont(win.view)
> +		self.Try(ShrinkFont)
>  
>  	def EnlargeFont(self):
> -		win = self.mdi_area.activeSubWindow()
> -		EnlargeFont(win.view)
> +		self.Try(EnlargeFont)
>  
>  	def EventMenu(self, events, reports_menu):
>  		branches_events = 0
> -- 
> 2.17.1

-- 

- Arnaldo