Prevent console window resize

[martinweihrauch]

Thank you for your great library!
However, I ran into the problem that resizing of the console messes up the styling.
I have read your closed "issue" about it, but I cannot figure out how to implement it with the current version.
Could you give me a hint?
Thx!

[goblinfactory]

That behaviour is actually a windows behavior of the windows console.
there's a checkbox under windows console settings that you need to deselect, there's a screenshot described in issue #33

[goblinfactory]

...also, if you use a HighSpeedWriter, you will get screen resize locking automatically.
This will be simplified in the next major release of konsole, for now, use a highspeed writer as follows

using var writer = new HighSpeedWriter();
var window = new Window(writer);
window.CursorVisible = false;
window.Write("Hello");
window.WriteLine("  world!");
// call flush on the writer whenever you want to update the screen
writer.Flush();

[goblinfactory]

Drop me a message if you have any problems with the above.

[martinweihrauch]

Thank you for your fast reply!
Now I transitioned from using the static Window to the window object, works excellent, also with the Flush!
I am writing a very helpful application (open source) to copy Azure blobs to local storage, where the multiple progress is excellent, using Konsole. Will place it on GitHub under MIT, too!
Again, thx!

[goblinfactory]

great!
just be aware that it won't be cross platform. The highspeedWriter is windows platform only.
you might want to have your app "log" events using a class you wire up depending on what platform you detect the user is on, use a sexy console app for windows, or a vanilla console writer for non windows platform.
I hope to create a cross platform writer for konsole ...if I get enough time. For now, the highspeedWriter is windows only.

[martinweihrauch]

Ah OK! Would be great, if it also runs on e. g. Linux.
Ok, then I would either use the highspeedwriter on Windows or use the static Window class for Linux.

[martinweihrauch]

BTW:
After I implemented this new highspeedWriter with "locking" the screen, I sometimes get a weird effect after a while of having the console open: it repeats on the right side:

[goblinfactory]

Hi Martin
what's the least amount of code possible to reproduce the problem reliably?
If you can provide that, then I can look at a fix for you straight away. I can't promise a fix, but I can spend a bit of time right now if you can provide the same code to reproduce the problem.
Txs,
Alan

[martinweihrauch]

Sure. This program now runs for 24+ hours straight (copying blobs) and I just unlocked my windows to get this (not resizable, which is nice, but the to be refreshed parts were either completely gone or broken:

[martinweihrauch]

The code:

`using BlobBackupLib.Azure.Model;
using BlobBackupLib.Jobs.Model;
using BlobBackupLib.Logging;
using Konsole;
using Konsole.Platform;
using Microsoft.Azure.Management.Network.Fluent;
using System;
using System.Collections.Concurrent;
using System.Collections.Generic;
using System.Text;

namespace AzureBlobToLocalBackupConsole
{
public class ConsoleOutput
{
private IConsole _topWindow;
private IConsole _lowerWindow;
private readonly List _pB;
private readonly Job _job;
private int _numberOfThreads;
private AppSettings _aS;
private HighSpeedWriter _writer;

    public ConsoleOutput(int num, Job job, AppSettings aS)
    {
        _pB = new List<ProgressBar>();
        _job = job;
        _aS = aS;
        _writer = new HighSpeedWriter();
        CreateConsoleElements(num);
        _numberOfThreads = num;
    }

    private void CreateConsoleElements(int num)
    {
        var window = new Window(_writer);
        window.CursorVisible = false;
        _topWindow = window.OpenBox("Azure Blob Backup - Info Console", 5, 1, _aS.ConsoleWidth - 10, _aS.ConsoleHeight - (num + 5), new BoxStyle() { ThickNess = LineThickNess.Double, Body = new Colors(ConsoleColor.White, ConsoleColor.Blue) });
        _lowerWindow = window.OpenBox("Current file(s) to backup", 5, _aS.ConsoleHeight - (num + 4), _aS.ConsoleWidth - 10, num + 3, new BoxStyle() { ThickNess = LineThickNess.Single });
        _topWindow.WriteLine("");
        _topWindow.WriteLine("      **** COMMODORE 64 BASIC V2 ****");
        _topWindow.WriteLine(" 64K RAM SYSTEM 38911 BASIC BYTES FREE");
        _topWindow.WriteLine("READY.");
        _topWindow.WriteLine("");
        _topWindow.WriteLine("Azure Blob to local Backup was programmed by (c) Smart In Media 2020");
        _topWindow.WriteLine("by Martin Weihrauch :)");

        for (var i = 0; i < num + 1; i++)

        {
            _pB.Add(new ProgressBar(_lowerWindow, _aS.ConsoleWidth - 2, _aS.ConsoleWidth - (int)(0.3 * (double)_aS.ConsoleWidth)));
        }
        _writer.Flush();
    }

    public void Flush()
    {
        _writer.Flush();
    }

    public void OutputToConsole(LoggingConsoleActions.Actions action, string text, bool lineFeed = true,  int id = -1, int progress = -1)
    {
        if(action == LoggingConsoleActions.Actions.Important)
        {
            if (lineFeed)
            {
                _topWindow.WriteLine(ConsoleColor.Yellow, text);
            }
            else
            {
                _topWindow.Write(ConsoleColor.Yellow, text);
            }
        }
        else if(action == LoggingConsoleActions.Actions.Error)
        {
            if (lineFeed)
            {
                _topWindow.WriteLine(ConsoleColor.Magenta, text);
            }
            else
            {
                _topWindow.Write(ConsoleColor.Magenta, text);

            }
        }


        else if(action == LoggingConsoleActions.Actions.Information)
        {
            if (lineFeed)
            {
                _topWindow.WriteLine(text);
            }
            else
            {
                _topWindow.Write(text);
            }
        }
        else
        {
            if(id == -1)
            {
                id = _numberOfThreads;
            }
            //Progress Update and text is filename
            text = text.Replace("\\", "/");
            string targetFolder = _job.DestinationFolder.Replace("\\", "/");
            text = text.Replace(targetFolder, "");
            _pB[id].Refresh(progress, text);

        }
        Flush();

    }
}

}
`

[martinweihrauch]

But: I will publish the whole thing on Github in a week, then you can also check it out easier maybe...

[goblinfactory]

Hi Martin

The reason I ask for the least amount of code, is twofold, first, ...many times the act of creating that minimal "proof of problem" you find a work around that you can use while you wait for a fix. And secondly, it allows me to get a fix out for you a whole lot quicker.

p.s. looking at your code I think I should create a fluent add on for konsole so that you can chain calls to a window, that would be handly.

.WriteLine("")
.WriteLine("----")
or even

.WriteLine( 
  "",
  "------",
  "some line",
  "another line",
 "-------");

Anyhoo ... I Digress... if you can help me with a really small example, the absolutely most minimal code possible that reproduces the problem, that would help me get a fix out for you quickly.

(I'm going on leave next Friday and I have a few project commitments that will keep me busy at work till quite late each day.)
Without something a lot simpler I'm going to have to wait until this weekend to investigate.

In the meantime I can suggest testing making the window 1 to 3 characters narrower or shorter than your window to see if either my code or your code is not clipping or handling the window height or width correctly. These are some random thoughts looking at your code.

Also, I'm assuming that the corruption only slowly happens over time, or does it start corrupting straight away?
Last question, are you running from a standard window console or from within something like ConEmu or some other terminal emulator?

chat later,
Alan

[goblinfactory]

Also, instead of

.WriteLine(ConsoleColor.Yellow, "I am Yellow");

you can add static using System.Console.ConsoleColor at the top of your code and then simply write

.WriteLine(Yellow, "I am yellow");

[goblinfactory]

also, if you're writing a command line utility, you may want to checkout https://github.com/psmacchia/NDepend.Path, .. looking at this bit of path munging you're doing it might be taking a look in case it's helpful?

text = text.Replace("\\", "/");
            string targetFolder = _job.DestinationFolder.Replace("\\", "/");
            text = text.Replace(targetFolder, "");
            _pB[id].Refresh(progress, text);