Re: [pgAdmin4][Patch]: RM #3589 Allow user to save/download Explain plan as JPEG/SVG format

From: Dave Page <dpage(at)pgadmin(dot)org>
To: Akshay Joshi <akshay(dot)joshi(at)enterprisedb(dot)com>
Cc: pgadmin-hackers <pgadmin-hackers(at)postgresql(dot)org>
Subject: Re: [pgAdmin4][Patch]: RM #3589 Allow user to save/download Explain plan as JPEG/SVG format
Date: 2018-12-13 10:51:01
Message-ID: CA+OCxoxk6cLiVGY4geeakxN+j5vAz23i_JFGV=+Nd8rmvDxM1g@mail.gmail.com
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Hi

Thanks - patch applied.

I think we need further work on the plan line width though - they're
thicker, but I still don't see obvious differences based on the cost. Maybe
look at the algorithm used in pgAdmin3?

On Mon, Dec 10, 2018 at 6:20 AM Akshay Joshi <akshay(dot)joshi(at)enterprisedb(dot)com>
wrote:

> Hi Dave/Hackers
>
>
> On Thu, Dec 6, 2018 at 3:16 PM Akshay Joshi <akshay(dot)joshi(at)enterprisedb(dot)com>
> wrote:
>
>> Hi Dave
>> On Thu, Dec 6, 2018 at 2:45 PM Dave Page <dpage(at)pgadmin(dot)org> wrote:
>>
>>> Hi
>>>
>>> On Thu, Dec 6, 2018 at 6:51 AM Akshay Joshi <
>>> akshay(dot)joshi(at)enterprisedb(dot)com> wrote:
>>>
>>>> Hi Hackers
>>>>
>>>> I didn't find the solution to show embedded SVG in Internet Explorer,
>>>> so I have disabled the "Download" button for Internet Explorer. Added new
>>>> function to get the browser name and version.
>>>>
>>>> Attached is the modified patch, please review it.
>>>>
>>>
>>> Looking good. A few thoughts though:
>>>
>>> - Can we add tests? I'm not sure if it's feasible to just save a plan
>>> and then check the contents look sane though, due to the download dialogue.
>>>
>>
>> You are talking about feature tests. If yes then it's been
>> difficult because each browser have different download dialog.
>>
>>>
>>> - The plan isn't overly helpful without the stats. Can you think of any
>>> way we can include them - e.g. is it possible to do mouseovers in pure SVG?
>>> Or perhaps we need to render a number of tables below the diagram?
>>>
>>
>> I'll try to include tooltips on mouseover in pure SVG.
>>
>
> Attached is the updated patch where I have added tooltips on
> mouseover in pure SVG. I have added the *<title> *tag to solve this
> issue.
> I have also increase the stroke-width of the lines. Please review
> it.
>
>>
>>>
>>>>
>>>> On Mon, Dec 3, 2018 at 6:39 PM Akshay Joshi <
>>>> akshay(dot)joshi(at)enterprisedb(dot)com> wrote:
>>>>
>>>>> Hi Hackers,
>>>>>
>>>>> I am currently working on Feature 3589 "Allow user to save/download
>>>>> Explain plan as JPEG/SVG format." I have added one download button to the
>>>>> toolbar in "Explain" tab, when clicked it will download the explain plan as
>>>>> a SVG file.
>>>>>
>>>>> To add this feature I'll have to modify the logic, so instead of
>>>>> providing relative path of each plan (svg image), I have embedded the
>>>>> binary data which is required to download the Explain plan.
>>>>>
>>>>> I have tested it on following:
>>>>>
>>>>> - *Chrome* (Working Fine)
>>>>> - *FireFox* (Working Fine)
>>>>> - *Microsoft Edge* (Working Fine)
>>>>> - *Safari 10.1 and above. *'Download' attribute support is added
>>>>> in 10.1
>>>>> https://developer.apple.com/library/archive/releasenotes/General/WhatsNewInSafari/Articles/Safari_10_1.html
>>>>> - *Internet Explorer *(Images are not rendered, shown X icon.).
>>>>> Please refer attached image.
>>>>>
>>>>> Attached is the working patch for the above except Internet Explorer.
>>>>> I have tried a lot to figure out the solution, but unable to fix the issue. *Need
>>>>> help/suggestions how to fix the issue on Internet Explorer. *
>>>>>
>>>>> --
>>>>> *Akshay Joshi*
>>>>>
>>>>> *Sr. Software Architect *
>>>>>
>>>>>
>>>>>
>>>>> *Phone: +91 20-3058-9517Mobile: +91 976-788-8246*
>>>>>
>>>>
>>>>
>>>> --
>>>> *Akshay Joshi*
>>>>
>>>> *Sr. Software Architect *
>>>>
>>>>
>>>>
>>>> *Phone: +91 20-3058-9517Mobile: +91 976-788-8246*
>>>>
>>>
>>>
>>> --
>>> Dave Page
>>> Blog: http://pgsnake.blogspot.com
>>> Twitter: @pgsnake
>>>
>>> EnterpriseDB UK: http://www.enterprisedb.com
>>> The Enterprise PostgreSQL Company
>>>
>>
>>
>> --
>> *Akshay Joshi*
>>
>> *Sr. Software Architect *
>>
>>
>>
>> *Phone: +91 20-3058-9517Mobile: +91 976-788-8246*
>>
>
>
> --
> *Akshay Joshi*
>
> *Sr. Software Architect *
>
>
>
> *Phone: +91 20-3058-9517Mobile: +91 976-788-8246*
>

--
Dave Page
Blog: http://pgsnake.blogspot.com
Twitter: @pgsnake

EnterpriseDB UK: http://www.enterprisedb.com
The Enterprise PostgreSQL Company

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