Python interpretor used: 2.7 (having trouble with python3.5 py2app on OSX 10.11
I am working on an interesting screenshot app using python and pygame but i am stuck at 1 screen limit since pygame doesn't seem to implicitly support multiple screens.
My problem is that right now I use pyautogui screenshot function to capture the whole screen and i open it in a pygame fullscreen window where i can modify the image and such.
I would like to know if there is a way to screenshot multiple displays at once in a cross platform compatible way. Right now i have yet to figure out how to make pyautogui screenshot any other display other than the default one
You may wish to look into the pyscreenshot library, its a purely python library and is supposed to be crossplatform, however also has issues with the multi monitor problem.
Another method is to call a subprocess of the specific os you are using, this means calling its native ability to screenshot via command, here is an example on IOS from this stackoverflow post outlining what i mean:
from subprocess import call
call(["/usr/sbin/screencapture", "screen1.png", "screen2.png"])
By #Mark Setchell
Looking at the website its already on the roadmap of pyautogui to make handling multiple screens simpler so hopefully they will resolve this.
There is also a long post here outlining the issue as it currently stands with pyautogui's multi-monitor support. So unfortunately as it stands it looks like both pygame and pyautogui do not (easily) support multi-monitor screenshotting atleast without hackish type implementations if your monitor calibrations are not completely side by side as it offsets x and y values to possibly negative's.
Latestly there is yet another...as always..another python library specifically for multi monitor screenshots in python called desktopmagic. Its available here however it makes no promises of being crossplatform and infact states only that "takes screenshots on windows". So for your purpose it may not be suitable.
Anyway hope this helps in anyway or atleast gives you more options. Hope your project works out.
Related
I've an idea and want to implement it.
But I'm not sure if it's gonna work. So, wanted to get your inputs.
I would like to take screenshots of a url.
Say, when I open a web-site www.espncricinfo.com , I would like to take screenshot of that page and save locally. This saved image can be converted to GIF later on.
Can this be achieved through python ? Any suggestions/inputs to make it ?
Updated
And also is it possible to capture screenshot in headless-browser ?
Any possibilities to launch the browser in headless mode (non-GUI) and then take the screenshot of particular area of web-page ?
To take a screenshot using python:
import pyscreenshot as ImageGrab
im = ImageGrab.grab()
im.save('path/to/image/folder/image_name.png')
im.show()
Yes and no, if you send a request with urllib you will get the HTML in return, which is step one to displaying a webpage. But you have to build that webpage from that with a browser engine, otherwise all you will see is a bunch of text.
There are some python libraries that can do this, such as pywebkitgtk, but those are probably not going to give you the best experience and support.
Another thing you could try is to use crod and firefox/chrome/whatever and then use python to automate the process.
Oh, and by the way, I strongly recommend upgrading to python3
I know it is a bit to late now, but just saw this question and in case anyone else is looking for a mighty tool, to do screenshots and also use headless browsers with python... I just want to recommend to look more deeply into https://www.seleniumhq.org/. There are many tutorials on youtube available. However, this is IMHO the most accurate framework to execute your task, IMHO. To make screenshots, you can then define the screen resolution etc.
I have built and run the Camera Example project from the examples in Qt (QtCreator -> examples).
All went correctly.
I can run the program and display video stream from my laptops camera (Lenovo X220) and from my android phone (using DroidCam Client in the background).
The example has many options, that you can change.
I can use the sliders to adjust Exposure Compensation or Quality. But they do not appear to work.
Nothing except form image capture does not appear to work. The same goes for the QML example.
Has anyone tried those examples?
Is there a way to make the functions provided by the example work?
Is there another way to make those changes?
I am using Window 10 with the latest updates, but I have tried the example a couple moths ago, and the results were the same.
I would like to recognize objects of windows applications, mainly computer games. I would like to accomplish this by opening the window in OpenCV and applying all kinds of effects to the game application under execution and recognize objects such as UI elements, messages and even characters that are on the screen.
Since OpenCV only allows video and webcam as input, is there a way to open a running application as a source for OpenCV?
There maybe some testing applications used in game development that use similar methods for testing, but I couldn't find any.
I also don't know the right terms that that are used when discussing the recognition of virtual objects of a computer program or computer game, but that is exactly what I would like to do.
I tried to look up forums, articles or anything written about this, but found nothing. Any help would be appreciated.
I used OpenCV for a year and I am not sure if you can pass the running application to it.
As an alternative, you might like to have a function which gives you the current screenshot of the desktop. So you can get it and pass to OpenCV.
This way you can periodically do screenshots and use your recognition.
If you are working under Windows you might need this discussion.
Hope this will somehow help you.
I've been trying all method using desktop as source in opencv few months ago as my experiment project and i success, but there's a trail inside the windows, as maybe the speed or processor depends on it. It using your own function to use desktop as source not from opencv libraries. And from there i continued custom things and got stuck in some bug that has something from memory, as it use lots of memory. I did post on stackoverflow. Hope this information helps.
Is it a good idea to use gtkmm gui toolkit for some desktop client application ?
Is this toolkit stable and is there enough documentation online ?
I used gtkmm to write professional applications and yes you can use it for real world software development.
But I also used C/GTK+ and C++/Qt and my opinion is that using Gtkmm you have the feeling that the original toolkit was meant to be used in C and the porting to C++ is ok but in many cases you feel that C++ features could have been used better.
For Comparison:
If you have to choose between Gtk and Gtkmm go for Gtkmm even though you might find yourself stuck in some not well documented or supported function. Eventually you always manage to find a solution (you can check the source code) and c++ is way better then c.
If you have to choose between Gtkmm and Qt, go for Qt. There is a HUGE gap between the two. Not only in the toolkit itself but in the documentation and all the other classes that you need when writing an application.
I started two month ago with gtkmm. I actually port a tcl/tk application and it feels very hard for my to get the things run. The only useful documentation I found is the https://developer.gnome.org/gtkmm-tutorial/3.4/
But many things described in the manual are not working! I actually run into trouble while overriding signal handlers which should work but didn't. Maybe you will take a look in gtkmm-list#gnome.org to find out what kind of problems yo will maybe run in :-)
The docs derived from the doxygen input seems useless for me, because the functions are mostly not described and the parameter names or often not very clear to me.
In comparison to tcl/tk the interface looks inconsistent. Sometimes a parameter must be provided by a text, sometimes by a pointer and sometimes by the native value itself. Especially the menus are very "mysterious" with the string based configuration. The need of having parameters as text is very unhandy! You have to convert the parameter with ostrstream into a text and parse the parameters sometimes yourself from text to real values.
I decided to give gtk+ a chance is the existence of the c++ interface. I thought it would be helpful to get the errors in compile time and not while running the app like with tcl/tk. But this is not the always true with gtkmm. With gtkmm you are also able to run into run time errors because all string parameters will be parsed during run time! This makes the things error prone!
Maybe I will start again and give Qt a chance. But a first view on it shows, that this seems not really better :-)
Writing a gui application still is a really annoying job!
gtkmm is a official supported binding of GTK (gtk.org/language-bindings.php).
"inkscape" and "ardour" are notable applications written in gtkmm
The bindings that are official GNOME Bindings follow the GNOME release schedule which guarantees API stability and time-based releases.
If you want to write your Application in C, go with GTK+ (and the GLib).
You can find a link to the documentation at http://www.gtkmm.org/ (https://developer.gnome.org/gtkmm-tutorial/).
With Glade (and ie. PyGTK) you could rapid prototype your application.
Building a GUI with Glade is easy and the resulting UI is a xml file, that is not bound to a programming language.
Hey!! I'm looking for python bindings for opensg 1.8.. I haven't been able to find it. I have read somethin about pyopengs. Is it still available? I am working on linux platform (ubuntu). If anyone could direct me to it I would be grateful.
The homepage and source code is on google code: pyOpenSG Project
As one of the creators of pyOpenSG, I can tell you that it is definitely still alive and kicking. We use it in production software all the time. It has become so stable for us though that we don't often update the code base. The python binding generator that we use (py++) just keeps everything working between revisions.