Touch support on Skia GTK #8275

dr1rrb · 2022-03-08T15:42:10Z

dr1rrb
Mar 8, 2022
Maintainer

Touch are not working on skia GTK

Joan Magnet report on discord

Touch event is detected in private void OnWindowButtonPressEvent(object o, ButtonPressEventArgs args) but it's not executed as a button click unless if I comment this code:

private PointerEventArgs AsPointerArgs(Event evt)
{
    var dev = EventHelper.GetSourceDevice(evt); // We use GetSourceDevice (and not GetDevice) in order to get the TouchScreen device
    var pointerDevice = ToPointerDevice(dev);
    var pointerDeviceType = pointerDevice.PointerDeviceType;

    //if (pointerDeviceType == PointerDeviceType.Touch)
    //{
    //    var type = evt.Type;
    //    if (type != EventType.TouchBegin
    //        && type != EventType.TouchUpdate
    //        && type != EventType.TouchEnd
    //        && type != EventType.TouchCancel)
    //    {
    //        // Touch events are sent twice by the OnWindowTouchEvent and the ButtonPressed/Released and MotionEvent.
    //        // As the pointerId (a.k.a sequence) is available only for touch events, we mute events coming from the mouse handlers.
    //        return null;
    //    }
    //}

uno/src/Uno.UI.Runtime.Skia.Gtk/GtkCoreWindowExtension.cs

Line 289 in c3ff19c

if (pointerDeviceType == PointerDeviceType.Touch)

But in fact, it doesn't detect touch events

private void OnWindowTouchEvent(object o, TouchEventArgs args)
{
    Console.WriteLine("@@ ON_WINDOW_TOUCH_EVENT");
    Console.WriteLine("@@ ON_WINDOW_TOUCH_EVENT LOG ERROR");

dr1rrb · 2022-03-08T15:42:32Z

dr1rrb
Mar 8, 2022
Maintainer Author

dr1rrb response on Discord

Hummm those lines was required to get the touch to work on some specific devices. However it's strange that you don't get any OnWindowTouchEvent, could you try to see if you remove the EventBox introduced by a7b59c0

22 replies

dariomingarelli Mar 30, 2022

Ah, ok! Now is clear! So, I compile my Uno.UI version, I remove the NuGet and add Uno.UI ref... can I leave the other Uno NuGets or I have to compile all?

dariomingarelli Mar 30, 2022

I've just check that I have to remove all Uno NuGet, right? By the way, do you plan to resolve it in next releases?

dr1rrb Mar 30, 2022
Maintainer Author

You can compile only the skia GTK version of uno.

With the override suggested by @mcNets (in the src/crosstargeting_override.props file), you will be able to do that, and you won't even have to remove the NuGet ref in you app: when you will compile uno, we will override the files located in C:\Users\[USERNAME]\.nuget\uno.ui\{UnoNugetOverrideVersion}\... (i.e. we override the local nuget cache). So you will just have to recompile your app. (Note: those will obviously work only for build that you are doing on the computer where you have built uno, i.e. not on CI where you will indeed have to remove the nuget package ref)

dr1rrb Mar 30, 2022
Maintainer Author

I've just check that I have to remove all Uno NuGet, right? By the way, do you plan to resolve it in next releases?

For sure we want to fix it ... just a question of bandwidth :) We also need to ensure that we won't break support for other touch screens.

jeromelaban Mar 30, 2022
Maintainer

Let's track this issue in #8465 as well.

mcNets · 2022-03-30T21:53:15Z

mcNets
Mar 30, 2022

I found something weird, even the PointerDeviceType is identified as Touch, I receive a ButtonPress (LeftButtonPressed) and a ButtonRelease (LeftButtonReleased) events.

0 replies

mcNets · 2022-03-30T22:09:04Z

mcNets
Mar 30, 2022

case PointerDeviceType.Touch:
	properties.IsLeftButtonPressed = evt.Type != EventType.TouchEnd && evt.Type != EventType.TouchCancel;
	pointerId = ((uint?)EventHelper.GetEventSequence(evt)?.Handle) ?? 0u;
	Console.WriteLine($"pointerId: {pointerId}");
	break;

And pointerId is always 0, even if a do a multi-touch

These are the events for a single touch:

@@ Type: MotionNotify  Pointer device: Touch 
@@ Type: EnterNotify  Pointer device: Touch 
@@ Type: ButtonPress  Pointer device: Touch 
@@ Type: MotionNotify  Pointer device: Touch 
@@ Type: ButtonRelease  Pointer device: Touch 
@@ Type: LeaveNotify  Pointer device: Touch

0 replies

dariomingarelli · 2022-04-21T14:44:49Z

dariomingarelli
Apr 21, 2022

Hi, I've just update to Uno 4.2.6 but the issue is not resolved in this release, right? Any update on the final solution?
Thanks!

4 replies

jeromelaban Apr 21, 2022
Maintainer

#8465 is still opened, as we do not have a clear repro for this issue yet.

dariomingarelli Jul 20, 2022

Hi! Any update about the resolution of this issue in new releases?

dr1rrb Jul 20, 2022
Maintainer Author

Not fixed yet, but the task is in the pipeline. Hopefully it will be fixed in next release.

mcNets Jul 20, 2022

That's good news

dr1rrb · 2022-07-27T21:20:15Z

dr1rrb
Jul 27, 2022
Maintainer Author

Hey @dariomingarelli I've pushed a PR to fix the issue #9379 but as I don't have a RPI with a touchscreen to test, it would be nice if you were able to test it first.

Also if you can uncomment this line (//#define TRACE_NATIVE_POINTER_EVENTS) and send me the log when you do a simple "tap" in your app? (I want to confirm the need or not to inject the pointer entered / exited with pressed / released).

11 replies

mcNets Jul 28, 2022

@dr1rrb I've set:

<UnoTargetFrameworkOverride>netstandard2.0</UnoTargetFrameworkOverride>
<UnoNugetOverrideVersion>4.5.0-dev.95</UnoNugetOverrideVersion>

Then I opened Uno.UI-Android-only.slnf and built Uno.UI project.

And I've opened: Uno.UI-Skia-only.slnf but I'm getting some errors and the nuget package 4.5.0-dev.95 has not been generated. Time ago I was able to build Skia solution.

Severity	Code	Description	Project	File	Line	Suppression State
Error	CS0006	Metadata file 'F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\Uno.UI\bin\Uno.UI.Skia\Debug\netstandard2.0\Uno.UI.dll' could not be found	Uno.UI.MSAL.Skia (netstandard2.0)	F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\AddIns\Uno.UI.MSAL\CSC	1	N/A
Error	CS0006	Metadata file 'F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\Uno.UI\bin\Uno.UI.Skia\Debug\netstandard2.0\Uno.UI.dll' could not be found	Uno.UI.RemoteControl.Skia (netstandard2.0)	F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\Uno.UI.RemoteControl\CSC	1	N/A
Error	CS0006	Metadata file 'F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\Uno.UI\bin\Uno.UI.Skia\Debug\netstandard2.0\Uno.UI.dll' could not be found	Uno.UI.Runtime.Skia.Gtk (netcoreapp3.1)	F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\Uno.UI.Runtime.Skia.Gtk\CSC	1	N/A
Error	CS0006	Metadata file 'F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\Uno.UI\bin\Uno.UI.Skia\Debug\netstandard2.0\Uno.UI.dll' could not be found	Uno.UI.Runtime.Skia.Linux.FrameBuffer (netstandard2.0)	F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\Uno.UI.Runtime.Skia.Linux.FrameBuffer\CSC	1	N/A
Error	CS0006	Metadata file 'F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\Uno.UI\bin\Uno.UI.Skia\Debug\netstandard2.0\Uno.UI.dll' could not be found	Uno.UI.Runtime.Skia.Tizen	F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\Uno.UI.Runtime.Skia.Tizen\CSC	1	N/A
Error	CS0006	Metadata file 'F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\Uno.UI\bin\Uno.UI.Skia\Debug\netstandard2.0\Uno.UI.dll' could not be found	Uno.UI.Runtime.Skia.Wpf (netcoreapp3.1)	F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\Uno.UI.Runtime.Skia.Wpf\CSC	1	N/A
Error	CS0006	Metadata file 'F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\Uno.UI\bin\Uno.UI.Skia\Debug\netstandard2.0\Uno.UI.dll' could not be found	Uno.UI.XamlHost.Skia (netstandard2.0)	F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\Uno.UI.XamlHost\CSC	1	N/A
Error	CS0006	Metadata file 'F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\Uno.UI\bin\Uno.UI.Skia\Debug\netstandard2.0\Uno.UI.dll' could not be found	Uno.UI.XamlHost.Skia.Wpf (netcoreapp3.1)	F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\Uno.UI.XamlHost.Skia.Wpf\CSC	1	N/A
Error	CS0006	Metadata file 'F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\Uno.UI.Runtime.Skia.Wpf\bin\Debug\netcoreapp3.1\Uno.UI.Runtime.Skia.Wpf.dll' could not be found	Uno.UI.XamlHost.Skia.Wpf (netcoreapp3.1)	F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\Uno.UI.XamlHost.Skia.Wpf\CSC	1	N/A
Error	CS0006	Metadata file 'F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\Uno.UI.XamlHost\bin\Uno.UI.XamlHost.Skia\Debug\netstandard2.0\Uno.UI.XamlHost.dll' could not be found	Uno.UI.XamlHost.Skia.Wpf (netcoreapp3.1)	F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\Uno.UI.XamlHost.Skia.Wpf\CSC	1	N/A
Error	CS0006	Metadata file 'F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\SamplesApp\SamplesApp.Skia\bin\Debug\netstandard2.0\SamplesApp.Skia.dll' could not be found	SamplesApp.Skia.Gtk (netcoreapp3.1)	F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\SamplesApp\SamplesApp.Skia.Gtk\CSC	1	N/A
Error	CS0006	Metadata file 'F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\Uno.UI\bin\Uno.UI.Skia\Debug\netstandard2.0\Uno.UI.dll' could not be found	SamplesApp.Skia.Gtk (netcoreapp3.1)	F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\SamplesApp\SamplesApp.Skia.Gtk\CSC	1	N/A
Error	CS0006	Metadata file 'F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\Uno.UI.FluentTheme\bin\Uno.UI.FluentTheme.Skia\Debug\netstandard2.0\Uno.UI.FluentTheme.dll' could not be found	SamplesApp.Skia.Gtk (netcoreapp3.1)	F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\SamplesApp\SamplesApp.Skia.Gtk\CSC	1	N/A
Error	CS0006	Metadata file 'F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\Uno.UI.FluentTheme.v1\bin\Uno.UI.FluentTheme.v1.Skia\Debug\netstandard2.0\Uno.UI.FluentTheme.v1.dll' could not be found	SamplesApp.Skia.Gtk (netcoreapp3.1)	F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\SamplesApp\SamplesApp.Skia.Gtk\CSC	1	N/A
Error	CS0006	Metadata file 'F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\Uno.UI.FluentTheme.v2\bin\Uno.UI.FluentTheme.v2.Skia\Debug\netstandard2.0\Uno.UI.FluentTheme.v2.dll' could not be found	SamplesApp.Skia.Gtk (netcoreapp3.1)	F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\SamplesApp\SamplesApp.Skia.Gtk\CSC	1	N/A
Error	CS0006	Metadata file 'F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\AddIns\Uno.UI.Lottie\bin\Uno.UI.Lottie.Skia\Debug\netstandard2.0\Uno.UI.Lottie.dll' could not be found	SamplesApp.Skia.Gtk (netcoreapp3.1)	F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\SamplesApp\SamplesApp.Skia.Gtk\CSC	1	N/A
Error	CS0006	Metadata file 'F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\AddIns\Uno.UI.MSAL\bin\Uno.UI.MSAL.Skia\Debug\netstandard2.0\Uno.UI.MSAL.dll' could not be found	SamplesApp.Skia.Gtk (netcoreapp3.1)	F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\SamplesApp\SamplesApp.Skia.Gtk\CSC	1	N/A
Error	CS0006	Metadata file 'F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\Uno.UI.RemoteControl\bin\Uno.UI.RemoteControl.Skia\Debug\netstandard2.0\Uno.UI.RemoteControl.dll' could not be found	SamplesApp.Skia.Gtk (netcoreapp3.1)	F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\SamplesApp\SamplesApp.Skia.Gtk\CSC	1	N/A
Error	CS0006	Metadata file 'F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\Uno.UI.Runtime.Skia.Gtk\bin\Debug\netcoreapp3.1\Uno.UI.Runtime.Skia.Gtk.dll' could not be found	SamplesApp.Skia.Gtk (netcoreapp3.1)	F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\SamplesApp\SamplesApp.Skia.Gtk\CSC	1	N/A
Error	CS0006	Metadata file 'F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\Uno.UI.RuntimeTests\bin\Uno.UI.RuntimeTests.Skia\Debug\netstandard2.0\Uno.UI.RuntimeTests.dll' could not be found	SamplesApp.Skia.Gtk (netcoreapp3.1)	F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\SamplesApp\SamplesApp.Skia.Gtk\CSC	1	N/A
Error	CS0006	Metadata file 'F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\Uno.UI.Toolkit\bin\Uno.UI.Toolkit.Skia\Debug\netstandard2.0\Uno.UI.Toolkit.dll' could not be found	SamplesApp.Skia.Gtk (netcoreapp3.1)	F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\SamplesApp\SamplesApp.Skia.Gtk\CSC	1	N/A
Error	CS0006	Metadata file 'F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\SamplesApp\SamplesApp.Skia\bin\Debug\netstandard2.0\SamplesApp.Skia.dll' could not be found	SamplesApp.Skia.Tizen	F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\SamplesApp\SamplesApp.Skia.Tizen\CSC	1	N/A
Error	CS0006	Metadata file 'F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\Uno.UI\bin\Uno.UI.Skia\Debug\netstandard2.0\Uno.UI.dll' could not be found	SamplesApp.Skia.Tizen	F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\SamplesApp\SamplesApp.Skia.Tizen\CSC	1	N/A
Error	CS0006	Metadata file 'F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\Uno.UI.FluentTheme\bin\Uno.UI.FluentTheme.Skia\Debug\netstandard2.0\Uno.UI.FluentTheme.dll' could not be found	SamplesApp.Skia.Tizen	F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\SamplesApp\SamplesApp.Skia.Tizen\CSC	1	N/A
Error	CS0006	Metadata file 'F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\Uno.UI.FluentTheme.v1\bin\Uno.UI.FluentTheme.v1.Skia\Debug\netstandard2.0\Uno.UI.FluentTheme.v1.dll' could not be found	SamplesApp.Skia.Tizen	F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\SamplesApp\SamplesApp.Skia.Tizen\CSC	1	N/A
Error	CS0006	Metadata file 'F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\Uno.UI.FluentTheme.v2\bin\Uno.UI.FluentTheme.v2.Skia\Debug\netstandard2.0\Uno.UI.FluentTheme.v2.dll' could not be found	SamplesApp.Skia.Tizen	F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\SamplesApp\SamplesApp.Skia.Tizen\CSC	1	N/A
Error	CS0006	Metadata file 'F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\AddIns\Uno.UI.Lottie\bin\Uno.UI.Lottie.Skia\Debug\netstandard2.0\Uno.UI.Lottie.dll' could not be found	SamplesApp.Skia.Tizen	F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\SamplesApp\SamplesApp.Skia.Tizen\CSC	1	N/A
Error	CS0006	Metadata file 'F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\AddIns\Uno.UI.MSAL\bin\Uno.UI.MSAL.Skia\Debug\netstandard2.0\Uno.UI.MSAL.dll' could not be found	SamplesApp.Skia.Tizen	F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\SamplesApp\SamplesApp.Skia.Tizen\CSC	1	N/A
Error	CS0006	Metadata file 'F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\Uno.UI.RemoteControl\bin\Uno.UI.RemoteControl.Skia\Debug\netstandard2.0\Uno.UI.RemoteControl.dll' could not be found	SamplesApp.Skia.Tizen	F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\SamplesApp\SamplesApp.Skia.Tizen\CSC	1	N/A
Error	CS0006	Metadata file 'F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\Uno.UI.Runtime.Skia.Tizen\bin\Debug\tizen50\Uno.UI.Runtime.Skia.Tizen.dll' could not be found	SamplesApp.Skia.Tizen	F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\SamplesApp\SamplesApp.Skia.Tizen\CSC	1	N/A
Error	CS0006	Metadata file 'F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\Uno.UI.RuntimeTests\bin\Uno.UI.RuntimeTests.Skia\Debug\netstandard2.0\Uno.UI.RuntimeTests.dll' could not be found	SamplesApp.Skia.Tizen	F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\SamplesApp\SamplesApp.Skia.Tizen\CSC	1	N/A
Error	CS0006	Metadata file 'F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\Uno.UI.Toolkit\bin\Uno.UI.Toolkit.Skia\Debug\netstandard2.0\Uno.UI.Toolkit.dll' could not be found	SamplesApp.Skia.Tizen	F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\SamplesApp\SamplesApp.Skia.Tizen\CSC	1	N/A
Error	CS0006	Metadata file 'F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\SamplesApp\SamplesApp.Skia\bin\Debug\netstandard2.0\SamplesApp.Skia.dll' could not be found	SamplesApp.Skia.WPF (netcoreapp3.1)	F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\SamplesApp\SamplesApp.Skia.WPF\CSC	1	N/A
Error	CS0006	Metadata file 'F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\Uno.UI\bin\Uno.UI.Skia\Debug\netstandard2.0\Uno.UI.dll' could not be found	SamplesApp.Skia.WPF (netcoreapp3.1)	F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\SamplesApp\SamplesApp.Skia.WPF\CSC	1	N/A
Error	CS0006	Metadata file 'F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\Uno.UI.FluentTheme\bin\Uno.UI.FluentTheme.Skia\Debug\netstandard2.0\Uno.UI.FluentTheme.dll' could not be found	SamplesApp.Skia.WPF (netcoreapp3.1)	F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\SamplesApp\SamplesApp.Skia.WPF\CSC	1	N/A
Error	CS0006	Metadata file 'F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\Uno.UI.FluentTheme.v1\bin\Uno.UI.FluentTheme.v1.Skia\Debug\netstandard2.0\Uno.UI.FluentTheme.v1.dll' could not be found	SamplesApp.Skia.WPF (netcoreapp3.1)	F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\SamplesApp\SamplesApp.Skia.WPF\CSC	1	N/A
Error	CS0006	Metadata file 'F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\Uno.UI.FluentTheme.v2\bin\Uno.UI.FluentTheme.v2.Skia\Debug\netstandard2.0\Uno.UI.FluentTheme.v2.dll' could not be found	SamplesApp.Skia.WPF (netcoreapp3.1)	F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\SamplesApp\SamplesApp.Skia.WPF\CSC	1	N/A
Error	CS0006	Metadata file 'F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\AddIns\Uno.UI.Lottie\bin\Uno.UI.Lottie.Skia\Debug\netstandard2.0\Uno.UI.Lottie.dll' could not be found	SamplesApp.Skia.WPF (netcoreapp3.1)	F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\SamplesApp\SamplesApp.Skia.WPF\CSC	1	N/A
Error	CS0006	Metadata file 'F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\AddIns\Uno.UI.MSAL\bin\Uno.UI.MSAL.Skia\Debug\netstandard2.0\Uno.UI.MSAL.dll' could not be found	SamplesApp.Skia.WPF (netcoreapp3.1)	F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\SamplesApp\SamplesApp.Skia.WPF\CSC	1	N/A
Error	CS0006	Metadata file 'F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\Uno.UI.RemoteControl\bin\Uno.UI.RemoteControl.Skia\Debug\netstandard2.0\Uno.UI.RemoteControl.dll' could not be found	SamplesApp.Skia.WPF (netcoreapp3.1)	F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\SamplesApp\SamplesApp.Skia.WPF\CSC	1	N/A
Error	CS0006	Metadata file 'F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\Uno.UI.Runtime.Skia.Wpf\bin\Debug\netcoreapp3.1\Uno.UI.Runtime.Skia.Wpf.dll' could not be found	SamplesApp.Skia.WPF (netcoreapp3.1)	F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\SamplesApp\SamplesApp.Skia.WPF\CSC	1	N/A
Error	CS0006	Metadata file 'F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\Uno.UI.RuntimeTests\bin\Uno.UI.RuntimeTests.Skia\Debug\netstandard2.0\Uno.UI.RuntimeTests.dll' could not be found	SamplesApp.Skia.WPF (netcoreapp3.1)	F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\SamplesApp\SamplesApp.Skia.WPF\CSC	1	N/A
Error	CS0006	Metadata file 'F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\Uno.UI.Toolkit\bin\Uno.UI.Toolkit.Skia\Debug\netstandard2.0\Uno.UI.Toolkit.dll' could not be found	SamplesApp.Skia.WPF (netcoreapp3.1)	F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\SamplesApp\SamplesApp.Skia.WPF\CSC	1	N/A
Error	MSB4018	The "LinkerDefinitionMergerTask_v0" task failed unexpectedly.
System.IO.FileNotFoundException: Could not find file 'F:\Projectes\GitHub\unoplatform\uno-dev-dr-touchRPI\src\Uno.UI\obj\Uno.UI.Skia\Debug\netstandard2.0\Uno.UI.dll'.

dr1rrb Jul 28, 2022
Maintainer Author

Well if you set the target fw to netStd 2.0 you should not try to open the Android slnf file, it usually results in invalid packages restores. I would recommend that, keeping the crosstargeting_override file as is and with the Skia_only slnf, you do REbuild (which will restore packages) on the Uno.UI.FluentTheme.v1.Skia project, then build Uno.UI.FluentTheme.v2.Skia and finally build the Uno.UI.Runtime.Skia.Gtk project (I notice that we might have some issue with the build order, going in that order seems to resolve it).

mcNets Jul 29, 2022

Got it.
I have Uno.UI.Runtime.Skia.Gtk package modified in my cache folder. Now I can manually move it to the published folder and make some tests.

mcNets Aug 1, 2022

@dr1rrb hi. I'm having some problems.

1- Build Uno.UI.Runtime.Skia.Gtk project. (That generates nuget packages for netcore3.1 and net5)
2- Build my app using this command: dotnet publish -r linux-arm -c Release -f net6.0 --self-contained=true /p:PublishReadyToRun=true /p:PublishSingleFile=false
3- Copy Uno.UI.Runtime.Skia.Gtk*.* from the nuget cache folder to the publish folder
4- Copy the publish folder to the device
5- Execute MyApp.Skia.Gtk

But this time it's not working.

Is that the correct way?

dr1rrb Aug 1, 2022
Maintainer Author

@mcNets Hum if you are trying with your own app (which is usually the best), you should follow this https://platform.uno/docs/articles/uno-development/debugging-uno-ui.html#debugging-uno-in-another-application

Basically, you set the UnoNugetOverrideVersion in the crosstargeting_override.props file, and you don't have to do step 3. The only thing is that I'm not sure that dotnet publish forces a complete re-build, so I would recommend that between 1 and 2 you also do a re-build (i think that with the dotnet command line it's dotnet build --force ...). The idea is to force the app to be built against the updated version of uno, not trying to "change" the *.dll files after build.

mcNets · 2022-08-02T07:19:17Z

mcNets
Aug 2, 2022

@dr1rrb that's what I got:

joan@raspberrypi:/share/vp_sysmac $ cat log.txt
fail: Uno.UI.RemoteControl.RemoteControlClient[0]
      Failed to get remote control server port from the IDE for endpoint [fe80::4cfa:3171:9c61:881c].
fail: Uno.UI.RemoteControl.RemoteControlClient[0]
      Failed to get remote control server port from the IDE for endpoint 169.254.136.28.
fail: Uno.UI.RemoteControl.RemoteControlClient[0]
      Failed to get remote control server port from the IDE for endpoint [fe80::f5ad:3257:2c75:a136].
fail: Uno.UI.RemoteControl.RemoteControlClient[0]
      Failed to get remote control server port from the IDE for endpoint 169.254.161.54.
fail: Uno.UI.RemoteControl.RemoteControlClient[0]
      Failed to get remote control server port from the IDE for endpoint [fe80::d454:60e4:be3b:2df7].
fail: Uno.UI.RemoteControl.RemoteControlClient[0]
      Failed to get remote control server port from the IDE for endpoint 192.168.1.136.
fail: Uno.UI.RemoteControl.RemoteControlClient[0]
      Failed to get remote control server port from the IDE for endpoint [fe80::b168:d92f:bf3b:d37c].
fail: Uno.UI.RemoteControl.RemoteControlClient[0]
      Failed to get remote control server port from the IDE for endpoint 192.168.1.135.
fail: Uno.UI.RemoteControl.RemoteControlClient[0]
      Failed to get remote control server port from the IDE for endpoint [fe80::80ee:f231:98e:3da6].
fail: Uno.UI.RemoteControl.RemoteControlClient[0]
      Failed to get remote control server port from the IDE for endpoint 169.254.61.166.
fail: Uno.UI.RemoteControl.RemoteControlClient[0]
      Failed to get any remote control server endpoint from the IDE.
fail: Microsoft.UI.Xaml.BrushTransition[0]
      The member BrushTransition.BrushTransition() is not implemented in Uno.
fail: Microsoft.UI.Xaml.BrushTransition[0]
      The member TimeSpan BrushTransition.Duration is not implemented in Uno.
fail: Microsoft.UI.Xaml.Controls.ContentPresenter[0]
      The member BrushTransition ContentPresenter.BackgroundTransition is not implemented in Uno.

9 replies

mcNets Aug 2, 2022

Is this ok?
builder.AddFilter("Microsoft.UI.Xaml.UIElement+PointerManager", LogLevel.Trace);

mcNets Aug 2, 2022

It's not getting Uno.UI.Runtime.Skia.Gtk.dll from local nuget cache, the size of the libraries (my project and nuget cache folder) is no the same

mcNets Aug 2, 2022

Can I somehow add a new sample project in the Skia solution and reference the library without using the nuget package?

dr1rrb Aug 2, 2022
Maintainer Author

Shouldn't trace events show up in the log?

Yes you should, once you have the right version of Uno.UI.Runtime.Skia.Gtk.dll

It's not getting Uno.UI.Runtime.Skia.Gtk.dll from local nuget cache, the size of the libraries (my project and nuget cache folder) is no the same

You can try to close VS (of your app), clear bin and obj (or git clean -fdx) and retry.
Personally I use the timestamp of the file to determine if

the dll has been override in the nuget cache (should be like few minutes ago);
the dll has been used while compiling the app (it should be the same in the nuget cache and the output folder of your app)

Can I somehow add a new sample project in the Skia solution and reference the library without using the nuget package?

Well in that case you can just use the "SampleApp" which is already in the solution.

mcNets Aug 2, 2022

@dr1rrb I can't build SampleApp, getting some generation errors.
I'll try with a new clean application with just one textbox and one button.
Sorry to bother you, I had no issues last time I tried to build and use the Skia libraries.

mcNets · 2022-08-02T17:02:55Z

mcNets
Aug 2, 2022

Well, I ended up downloading the nuget packages from DevOps and I referenced it into my project:

<PackageReference Include="Uno.WinUI.Skia.Gtk" Version="4.5.0-PullRequest-9379-51166-9379" />

I'm sorry but it doesn't work.

I will start again by downloading the modified branch and try to build and use the Skia library tomorrow.

5 replies

jeromelaban Aug 2, 2022
Maintainer

Would you have the part reference of the screen you're using? If it commercially available?

mcNets Aug 2, 2022

I'm waiting for a new device.

https://chipsee.com/product/ppc-cm4-70/

Here the hardware specifications:

https://docs.chipsee.com/PCs/Pi/A72/Manuals/Hardware/CS10600RA4070.html?_ga=2.12708151.1843726286.1659461383-1969000117.1657532031&_gac=1.127268223.1657532031.Cj0KCQjwlK-WBhDjARIsAO2sErSwp5-aogpJwWf4omCfR7nJb2Y5esIVuURkL7F3xjQXQEREBB2LkP0aAiaZEALw_wcB&_gl=1*1yeprn6*_ga*MTk2OTAwMDExNy4xNjU3NTMyMDMx*_ga_MP6B40CSCF*MTY1OTQ2MTM4My4yLjEuMTY1OTQ2MTQzOS4w

That comes with a Raspberry Compute Module 4, this week I should receive the processor board (wireless, 8Gb RAM, 32Gb eMMC)

According to the hardware specifications:

"The EPC/PPC-CM4-70 industrial Pi PC uses a 5-point capacitive touch screen. However, the Debian OS supports only One-Point touch"

Maybe raspbian has the same limitation.

My current screen is a: IMTECH 10'

I've got it on Amazon.

https://amzn.eu/d/hcztavF

dr1rrb Aug 2, 2022
Maintainer Author

@mcNets we have tested on 2 different screens and it's working much better than with previous version. So we will merge the PR as is, and you will be able to test using the dev packages directly from nuget.

mcNets Aug 2, 2022

Thanks!!

jeromelaban Aug 2, 2022
Maintainer

For information, I've tested the touch update on this display and another touch screen (which uses the internal RPi display+touch port) and both are working properly after #9379.

dariomingarelli · 2022-09-15T08:59:59Z

dariomingarelli
Sep 15, 2022

Hi, I've just update to Uno 4.5.9 but the issue is not resolved in this release, right? Any update on the final solution?
Thanks again!

6 replies

mcNets Sep 15, 2022

I'm using 4.5.0-dev.428.

Has it been included in 4.5.9 ?

If so, it should work. Try by deleting bin and obj folders and rebuild it again.

dariomingarelli Sep 15, 2022

Thanks all... so, if you confirmed that the issue is resolved, I'll try to check everything and update you soon. Thanks!

dariomingarelli Sep 16, 2022

I've tested again (deleting and recompiling all using NuGet 4.5.9 version) and I can confirm that now all touchscreen connected by USB to my Raspberry CM4 running last Raspberry O.S. working correctly with my app.

Thanks all to correct the bug and to developing this wonderful framework!

jeromelaban Sep 16, 2022
Maintainer

Glad you got it working and thanks for the feedback!

sasakrsmanovic Sep 16, 2022
Collaborator

Great! @dariomingarelli Send us some videos of your app working; we love seeing Uno Platform apps in the wild!!

Touch support on Skia GTK #8275

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dr1rrb Mar 8, 2022 Maintainer

Touch are not working on skia GTK

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Mar 8, 2022
Maintainer

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