MESSAGE
| DATE | 2016-10-13 |
| FROM | ruben safir
|
| SUBJECT | Subject: [Learn] Fwd: access to the screen
|
From learn-bounces-at-nylxs.com Thu Oct 13 16:37:05 2016
Return-Path:
X-Original-To: archive-at-mrbrklyn.com
Delivered-To: archive-at-mrbrklyn.com
Received: from www.mrbrklyn.com (www.mrbrklyn.com [96.57.23.82])
by mrbrklyn.com (Postfix) with ESMTP id E0E2D160862;
Thu, 13 Oct 2016 16:37:04 -0400 (EDT)
X-Original-To: learn-at-nylxs.com
Delivered-To: learn-at-nylxs.com
Received: from [10.0.0.62] (flatbush.mrbrklyn.com [10.0.0.62])
by mrbrklyn.com (Postfix) with ESMTP id 6CFA01600B4;
Thu, 13 Oct 2016 16:37:00 -0400 (EDT)
From: ruben safir
To: learn-at-nylxs.com, Samir Iabbassen ,
Ephraim Schnaidman
References:
<1blgxtgdvo.fsf-at-pfeifferfamily.net>
<20161012211102.172-at-kylheku.com>
<1bd1j4gw36.fsf-at-pfeifferfamily.net>
<57ff7b85$0$7106$426a74cc-at-news.free.fr>
Message-ID:
Date: Thu, 13 Oct 2016 16:37:00 -0400
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101
Thunderbird/45.2.0
MIME-Version: 1.0
In-Reply-To:
Content-Type: multipart/mixed; boundary="------------CC75EB000E208F40DE333227"
Subject: [Learn] Fwd: access to the screen
X-BeenThere: learn-at-nylxs.com
X-Mailman-Version: 2.1.17
Precedence: list
List-Id:
List-Unsubscribe: ,
List-Archive:
List-Post:
List-Help:
List-Subscribe: ,
Errors-To: learn-bounces-at-nylxs.com
Sender: "Learn"
This is a multi-part message in MIME format.
--------------CC75EB000E208F40DE333227
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 7bit
A starting point maybe..
--------------CC75EB000E208F40DE333227
Content-Type: message/rfc822;
name="access to the screen.eml"
Content-Transfer-Encoding: 7bit
Content-Disposition: attachment;
filename="access to the screen.eml"
Path: reader2.panix.com!panix!not-for-mail
From: ruben safir
Newsgroups: comp.unix.programmer
Subject: access to the screen
Date: Wed, 12 Oct 2016 21:46:21 -0400
Organization: PANIX Public Access Internet and UNIX, NYC
Message-ID:
NNTP-Posting-Host: www.mrbrklyn.com
Mime-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 7bit
X-Trace: reader2.panix.com 1476323181 19915 96.57.23.82 (13 Oct 2016 01:46:21 GMT)
X-Complaints-To: abuse-at-panix.com
NNTP-Posting-Date: Thu, 13 Oct 2016 01:46:21 +0000 (UTC)
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101
Thunderbird/45.2.0
Xref: panix comp.unix.programmer:236538
I have an assignment to read PNG files in parallel and the firs thing I
thought of was how do I send the output of the read to the screen?
Ruben
--------------CC75EB000E208F40DE333227
Content-Type: message/rfc822;
name="Re: access to the screen.eml"
Content-Transfer-Encoding: 7bit
Content-Disposition: attachment;
filename="Re: access to the screen.eml"
Path: reader2.panix.com!panix!goblin2!goblin1!goblin.stu.neva.ru!eternal-september.org!feeder.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail
From: Joe Pfeiffer
Newsgroups: comp.unix.programmer
Subject: Re: access to the screen
Date: Wed, 12 Oct 2016 20:51:39 -0600
Organization: A noiseless patient Spider
Message-ID: <1blgxtgdvo.fsf-at-pfeifferfamily.net>
References:
Mime-Version: 1.0
Content-Type: text/plain
Injection-Info: mx02.eternal-september.org; posting-host="bef33925f3660632af824c0c5dd05c5d";
logging-data="12608"; mail-complaints-to="abuse-at-eternal-september.org"; posting-account="U2FsdGVkX195ScklTnq+VUqNX6TnhVWH6pUsvHPksZY="
User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.5 (gnu/linux)
Cancel-Lock: sha1:V8TaJDKdd4mA2jXSlWeJp5oXTfU=
sha1:YXaQYsdSjvhEnSGpNu71cMNOoYw=
Xref: panix comp.unix.programmer:236539
ruben safir writes:
> I have an assignment to read PNG files in parallel and the firs thing I
> thought of was how do I send the output of the read to the screen?
Is that part of the assignment, or do you just need to show that you've
read the file successfully by doing some sort of analysis?
If you really need to display the result, the question varies with which
toolkit you're using...
--------------CC75EB000E208F40DE333227
Content-Type: message/rfc822;
name="Re: access to the screen.eml"
Content-Transfer-Encoding: 7bit
Content-Disposition: attachment;
filename="Re: access to the screen.eml"
Path: reader2.panix.com!panix!not-for-mail
From: ruben safir
Newsgroups: comp.unix.programmer
Subject: Re: access to the screen
Date: Wed, 12 Oct 2016 23:21:36 -0400
Organization: PANIX Public Access Internet and UNIX, NYC
Message-ID:
References:
<1blgxtgdvo.fsf-at-pfeifferfamily.net>
NNTP-Posting-Host: www.mrbrklyn.com
Mime-Version: 1.0
Content-Type: text/plain; charset=windows-1252
Content-Transfer-Encoding: 7bit
X-Trace: reader2.panix.com 1476328896 11676 96.57.23.82 (13 Oct 2016 03:21:36 GMT)
X-Complaints-To: abuse-at-panix.com
NNTP-Posting-Date: Thu, 13 Oct 2016 03:21:36 +0000 (UTC)
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101
Thunderbird/45.2.0
In-Reply-To: <1blgxtgdvo.fsf-at-pfeifferfamily.net>
Xref: panix comp.unix.programmer:236540
On 10/12/2016 10:51 PM, Joe Pfeiffer wrote:
> Is that part of the assignment, or do you just need to show that you've
> read the file successfully by doing some sort of analysis?
>
> If you really need to display the result, the question varies with which
> toolkit you're using...
I need to see it. I need to read it and display it. I assume I'm using
X, but can it be sent to a terminal? libpng doesn't access the screen
directly? The gimp uses what?
--------------CC75EB000E208F40DE333227
Content-Type: message/rfc822;
name="Re: access to the screen.eml"
Content-Transfer-Encoding: 7bit
Content-Disposition: attachment;
filename="Re: access to the screen.eml"
Path: reader2.panix.com!panix!goblin2!goblin.stu.neva.ru!aioe.org!.POSTED!not-for-mail
From: Kaz Kylheku <221-501-9011-at-kylheku.com>
Newsgroups: comp.unix.programmer
Subject: Re: access to the screen
Date: Thu, 13 Oct 2016 04:12:42 +0000 (UTC)
Organization: Aioe.org NNTP Server
Message-ID: <20161012211102.172-at-kylheku.com>
References:
<1blgxtgdvo.fsf-at-pfeifferfamily.net>
NNTP-Posting-Host: OGJi3KNpFOhM58UHZwXj0w.user.gioia.aioe.org
X-Complaints-To: abuse-at-aioe.org
User-Agent: slrn/pre1.0.0-18 (Linux)
X-Notice: Filtered by postfilter v. 0.8.2
Xref: panix comp.unix.programmer:236541
On 2016-10-13, ruben safir wrote:
> On 10/12/2016 10:51 PM, Joe Pfeiffer wrote:
>> Is that part of the assignment, or do you just need to show that you've
>> read the file successfully by doing some sort of analysis?
>>
>> If you really need to display the result, the question varies with which
>> toolkit you're using...
>
>
> I need to see it. I need to read it and display it. I assume I'm using
> X, but can it be sent to a terminal? libpng doesn't access the screen
> directly? The gimp uses what?
GIMP sends canvas paint requests to ... that fox which holds the brush
in its mouth.
--------------CC75EB000E208F40DE333227
Content-Type: message/rfc822;
name="Re: access to the screen.eml"
Content-Transfer-Encoding: 7bit
Content-Disposition: attachment;
filename="Re: access to the screen.eml"
Path: reader2.panix.com!panix!not-for-mail
From: ruben safir
Newsgroups: comp.unix.programmer
Subject: Re: access to the screen
Date: Thu, 13 Oct 2016 03:17:51 -0400
Organization: PANIX Public Access Internet and UNIX, NYC
Message-ID:
References:
<1blgxtgdvo.fsf-at-pfeifferfamily.net>
<20161012211102.172-at-kylheku.com>
NNTP-Posting-Host: www.mrbrklyn.com
Mime-Version: 1.0
Content-Type: text/plain; charset=windows-1252
Content-Transfer-Encoding: 7bit
X-Trace: reader2.panix.com 1476343071 7242 96.57.23.82 (13 Oct 2016 07:17:51 GMT)
X-Complaints-To: abuse-at-panix.com
NNTP-Posting-Date: Thu, 13 Oct 2016 07:17:51 +0000 (UTC)
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101
Thunderbird/45.2.0
In-Reply-To: <20161012211102.172-at-kylheku.com>
Xref: panix comp.unix.programmer:236542
On 10/13/2016 12:12 AM, Kaz Kylheku wrote:
> GIMP sends canvas paint requests to ... that fox which holds the brush
> in its mouth.
?
--------------CC75EB000E208F40DE333227
Content-Type: message/rfc822;
name="Re: access to the screen.eml"
Content-Transfer-Encoding: 7bit
Content-Disposition: attachment;
filename="Re: access to the screen.eml"
Path: reader2.panix.com!panix!goblin2!goblin1!goblin.stu.neva.ru!eternal-september.org!feeder.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail
From: Paul
Newsgroups: comp.unix.programmer
Subject: Re: access to the screen
Date: Thu, 13 Oct 2016 04:04:06 -0400
Organization: A noiseless patient Spider
Message-ID:
References: <1blgxtgdvo.fsf-at-pfeifferfamily.net> <20161012211102.172-at-kylheku.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=windows-1252; format=flowed
Content-Transfer-Encoding: 7bit
Injection-Date: Thu, 13 Oct 2016 08:03:50 -0000 (UTC)
Injection-Info: mx02.eternal-september.org; posting-host="5704f6683eb59b0d3bc87fa776df7c14";
logging-data="27560"; mail-complaints-to="abuse-at-eternal-september.org"; posting-account="U2FsdGVkX1/+EiAjcJfN5/5LuzdQIxfUQWsvTbX7ze8="
User-Agent: Ratcatcher/2.0.0.25 (Windows/20130802)
In-Reply-To:
Cancel-Lock: sha1:8XB0n4uVkpVCP1MSuMUfnMhmCrw=
Xref: panix comp.unix.programmer:236543
ruben safir wrote:
> On 10/13/2016 12:12 AM, Kaz Kylheku wrote:
>> GIMP sends canvas paint requests to ... that fox which holds the brush
>> in its mouth.
>
> ?
Most people wishing to "open their first window
on an X server and display something", look
for a tutorial to that effect on the web.
http://math.msu.su/~vvb/2course/Borisenko/CppProjects/GWindow/xintro.html
"This document is a very basic introduction.
This is its first draft (2/9/96)."
So that tutorial was written 20 years ago.
You can use a PNG library, prepare a pixmap
from the PNG, find some nice tutorial code for
resizing a pixmap, make a bunch of thumbnails
and plunk them into your main window and so on.
And this part of your project is the easy part.
I can't help you with the hard part. As I'm
a "copy and paste programmer" :-)
Paul
--------------CC75EB000E208F40DE333227
Content-Type: message/rfc822;
name="Re: access to the screen.eml"
Content-Transfer-Encoding: 7bit
Content-Disposition: attachment;
filename="Re: access to the screen.eml"
Path: reader2.panix.com!panix!goblin2!goblin.stu.neva.ru!aioe.org!eternal-september.org!feeder.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail
From: Joe Pfeiffer
Newsgroups: comp.unix.programmer
Subject: Re: access to the screen
Date: Thu, 13 Oct 2016 08:30:37 -0600
Organization: A noiseless patient Spider
Message-ID: <1bd1j4gw36.fsf-at-pfeifferfamily.net>
References:
<1blgxtgdvo.fsf-at-pfeifferfamily.net>
Mime-Version: 1.0
Content-Type: text/plain
Injection-Info: mx02.eternal-september.org; posting-host="bef33925f3660632af824c0c5dd05c5d";
logging-data="5399"; mail-complaints-to="abuse-at-eternal-september.org"; posting-account="U2FsdGVkX1+15+OS0QeizHjaeFKphTdY0534G2tpHWE="
User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.5 (gnu/linux)
Cancel-Lock: sha1:femybOgQm8OAGzFhLn3IEHYJNKU=
sha1:P430N0ydKsLUMDBvaDkeZKM2UZg=
Xref: panix comp.unix.programmer:236547
ruben safir writes:
> On 10/12/2016 10:51 PM, Joe Pfeiffer wrote:
>> Is that part of the assignment, or do you just need to show that you've
>> read the file successfully by doing some sort of analysis?
>>
>> If you really need to display the result, the question varies with which
>> toolkit you're using...
>
>
> I need to see it. I need to read it and display it. I assume I'm using
> X, but can it be sent to a terminal? libpng doesn't access the screen
> directly? The gimp uses what?
GTK (the Gimp Toolkit, originally written for the Gimp). See
http://www.gtk.org/
--------------CC75EB000E208F40DE333227
Content-Type: message/rfc822;
name="Re: access to the screen.eml"
Content-Transfer-Encoding: 7bit
Content-Disposition: attachment;
filename="Re: access to the screen.eml"
Path: reader2.panix.com!panix!goblin2!goblin1!goblin.stu.neva.ru!eternal-september.org!feeder.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail
From: Nobody
Newsgroups: comp.unix.programmer
Subject: Re: access to the screen
Date: Thu, 13 Oct 2016 10:39:59 +0100
Organization: A noiseless patient Spider
Message-ID:
References:
Mime-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Injection-Info: mx02.eternal-september.org; posting-host="c045e9da56c1a8601a86555ae899fc6c";
logging-data="12366"; mail-complaints-to="abuse-at-eternal-september.org"; posting-account="U2FsdGVkX1+axyRMC8uJWVEOFQNdD5mC"
User-Agent: Pan/0.14.2 (This is not a psychotic episode. It's a cleansing moment of clarity.)
Cancel-Lock: sha1:vhyLoDlazmghFvWYnSC3BkaY9bU=
Xref: panix comp.unix.programmer:236544
On Wed, 12 Oct 2016 21:46:21 -0400, ruben safir wrote:
> I have an assignment to read PNG files in parallel and the firs thing I
> thought of was how do I send the output of the read to the screen?
The easiest solution is to use a GUI toolkit (GTK, Qt, wxWidgets, Tk,
...). There are lower-level solutions using Xlib or even fbdev, but
they're more complicated.
--------------CC75EB000E208F40DE333227
Content-Type: message/rfc822;
name="Re: access to the screen.eml"
Content-Transfer-Encoding: 8bit
Content-Disposition: attachment;
filename="Re: access to the screen.eml"
Path: reader2.panix.com!panix!goblin2!goblin1!goblin.stu.neva.ru!proxad.net!feeder1-2.proxad.net!cleanfeed1-b.proxad.net!nnrp5-1.free.fr!not-for-mail
Newsgroups: comp.unix.programmer
From: Nicolas George
Subject: Re: access to the screen
Sender: george-at-phare.invalid (Nicolas George)
X-Newsreader: Flrn (0.9.20070704)
References:
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Content-Type: text/plain; charset=iso-8859-1
Date: 13 Oct 2016 12:18:13 GMT
Message-ID: <57ff7b85$0$7106$426a74cc-at-news.free.fr>
Organization: Guest of ProXad - France
NNTP-Posting-Date: 13 Oct 2016 14:18:13 CEST
NNTP-Posting-Host: 129.199.129.80
X-Trace: 1476361093 news-3.free.fr 7106 129.199.129.80:40501
X-Complaints-To: abuse-at-proxad.net
Xref: panix comp.unix.programmer:236546
Nobody , dans le message
, a ?crit?:
> The easiest solution is to use a GUI toolkit (GTK, Qt, wxWidgets, Tk,
> ...).
Piping the image to a viewer is even simpler.
--------------CC75EB000E208F40DE333227
Content-Type: message/rfc822;
name="Re: access to the screen.eml"
Content-Transfer-Encoding: 8bit
Content-Disposition: attachment;
filename="Re: access to the screen.eml"
Path: reader2.panix.com!panix!goblin2!goblin1!goblin.stu.neva.ru!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail
From: Jorgen Grahn
Newsgroups: comp.unix.programmer
Subject: Re: access to the screen
Date: 13 Oct 2016 16:40:31 GMT
Message-ID:
References:
<57ff7b85$0$7106$426a74cc-at-news.free.fr>
Mime-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 8bit
X-Trace: individual.net lbEs9HpXZonRy0aMDDWsUQ/wDRA9Qisflc1TKNBaQ7L487nEM7
Cancel-Lock: sha1:wl42+xXvSqqMkam2NQ4vgahFinA=
User-Agent: slrn/pre1.0.0-18 (Linux)
Xref: panix comp.unix.programmer:236550
On Thu, 2016-10-13, Nicolas George wrote:
> Nobody , dans le message
> , a ?crit?:
>> The easiest solution is to use a GUI toolkit (GTK, Qt, wxWidgets, Tk,
>> ...).
>
> Piping the image to a viewer is even simpler.
Yes; unless the assignment forbids it[0], I'd probably convert to PNM,
and feed it to Imagemagick's display(1) utility, or something.
/Jorgen
[0] But at first it sounded as if the assignment focused on using
parallelism for fast PNG decoding. It's unclear why just creating
a bitmapped image file in some simple format wouldn't be enough.
--
// Jorgen Grahn \X/ snipabacken.se> O o .
--------------CC75EB000E208F40DE333227
Content-Type: message/rfc822;
name="Re: access to the screen.eml"
Content-Transfer-Encoding: 7bit
Content-Disposition: attachment;
filename="Re: access to the screen.eml"
Path: reader2.panix.com!panix!goblin2!goblin.stu.neva.ru!aioe.org!eternal-september.org!feeder.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail
From: Noob
Newsgroups: comp.unix.programmer
Subject: Re: access to the screen
Date: Thu, 13 Oct 2016 12:55:27 +0200
Organization: A noiseless patient Spider
Message-ID:
References:
Mime-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-15
Content-Transfer-Encoding: 7bit
Injection-Date: Thu, 13 Oct 2016 10:55:15 -0000 (UTC)
Injection-Info: mx02.eternal-september.org; posting-host="91763b3df91fe155a5ee02005007e5d4";
logging-data="28504"; mail-complaints-to="abuse-at-eternal-september.org"; posting-account="U2FsdGVkX19U+LcxFU5zxxDMZndw0/JmQO6Vczep3w0="
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:43.0) Gecko/20100101
Firefox/43.0 SeaMonkey/2.40
In-Reply-To:
Cancel-Lock: sha1:0X2J6QX6Iq59p+VLtI9MGCAYhtg=
Xref: panix comp.unix.programmer:236545
On 13/10/2016 03:46, ruben safir wrote:
> I have an assignment to read PNG files in parallel and the first thing I
> thought of was how do I send the output of the read to the screen?
In the old days, one might use DirectFB (defunct) or fbdev.
https://en.wikipedia.org/wiki/DirectFB
https://en.wikipedia.org/wiki/Linux_framebuffer
Today, it's gotten more complex with DRI, DRM, Wayland, Mir, etc.
https://en.wikipedia.org/wiki/Direct_Rendering_Infrastructure
https://en.wikipedia.org/wiki/Direct_Rendering_Manager
https://en.wikipedia.org/wiki/Wayland_%28display_server_protocol%29
https://en.wikipedia.org/wiki/Mir_%28software%29
A tutorial might be in order.
http://betteros.org/tut/graphics1.php
If you just want to display to a terminal, you might also consider
AAlib or libcaca.
https://en.wikipedia.org/wiki/AAlib
https://en.wikipedia.org/wiki/Libcaca
Regards.
--------------CC75EB000E208F40DE333227
Content-Type: text/plain; charset="us-ascii"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
_______________________________________________
Learn mailing list
Learn-at-nylxs.com
http://lists.mrbrklyn.com/mailman/listinfo/learn
--------------CC75EB000E208F40DE333227--
|
|
