kotlinlang #compose-desktop

@Igor Demin - can the 1.2.0-dev branch be switched to the latest release 0.7.18 of Skiko - so that it gets the recently added bindings for runtime shaders? Also, would be nice to have a rough idea on the timeline for 1.2.0 release if possible.

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Keith Karanu

05/08/2022, 6:27 AM

Is there any way to remove the shadow from the interior of the element?

Michael Paus

05/08/2022, 10:11 AM

Can anybody tell me how to properly set up a Compose multiplatform library project. There does not seem to be any specific template for that. If there is no better approach I would like to start from a Kotlin multiplatform library project created by the Idea “New project” wizard and then extend that to support Compose. Whatever I have tried so far there always seems to be something missing. For the time being support for Android and Desktop would be enough.

Xad Kile

05/09/2022, 4:27 PM

My compose app renders around 100 composables on the screen at the same time. I notice that it is very slow/laggy when it starts. Any action takes around 0.5-1 seconds to complete, but if I leave it alone for about 1-2 minutes, it somehow "stabilizes" and becomes very smooth. Is there anything I can do to fix this? I am testing on a low spec PC - CPU i5-4th gen, 8GB of RAM

spierce7

05/09/2022, 9:02 PM

Is there a provided way that we have to interpret a hex string color, or is the best way to do something like

colorString.removePrefix("#").toInt(16)

miguelsesma

05/10/2022, 1:14 PM

I'm trying to create a deb package for installing in Linux Arm64 (Nvidia jetson nano) from a M1 macbook. I know that I can't do it directly so I have installed a linux vm using Canonical Multipass. Once Java nad Gradle are configures I have this environment:

ubuntu@primary:~/Home/IdeaProjects/untitled$ uname -a
Linux primary 5.4.0-109-generic #123-Ubuntu SMP Fri Apr 8 09:12:14 UTC 2022 aarch64 aarch64 aarch64 GNU/Linux
ubuntu@primary:~/Home/IdeaProjects/untitled$ gradle -version

------------------------------------------------------------
Gradle 7.4.2
------------------------------------------------------------

Build time:   2022-03-31 15:25:29 UTC
Revision:     540473b8118064efcc264694cbcaa4b677f61041

Kotlin:       1.5.31
Groovy:       3.0.9
Ant:          Apache Ant(TM) version 1.10.11 compiled on July 10 2021
JVM:          16.0.1 (Private Build 16.0.1+9-Ubuntu-120.04)
OS:           Linux 5.4.0-109-generic aarch64

Now I try to create the package but gradle complains about not having `skiko`:

ubuntu@primary:~/Home/IdeaProjects/untitled$ gradle createDistributable

> Task :run FAILED
Exception in thread "main" java.lang.UnsatisfiedLinkError: /home/ubuntu/.skiko/301a4ed732d2008e05d036470d72b8c7a7df9df1b3cc0d356615c8129124eae2/libskiko-linux-arm64.so: libGL.so.1: cannot open shared object file: No such file or directory
        at java.base/jdk.internal.loader.NativeLibraries.load(Native Method)

I cannot install intellij idea

ubuntu@primary:~/Home/IdeaProjects/untitled$ sudo snap install intellij-idea-community --classic
error: snap "intellij-idea-community" is not available on stable for this architecture (arm64) but
       exists on other architectures (amd64).

So I need to somewhat configure skiko, skia or whatever is need, but I'm lost. After reading everythinh in this channel related to raspberry pi, I'm even more confused. Perhaps trying to install intellij as explained here https://youtrack.jetbrains.com/articles/IDEA-A-48/JetBrains-IDEs-on-AArch64 will provide me the skia / skiko needed dependencies? Any help is welcomed.

Abdelilah El Aissaoui

05/10/2022, 5:25 PM

I've been trying to track down an issue where any compose app would slow down after a few hours of standby, so I would like to measure the app FPS (ubuntu for example) as commented by this issue by @Igor Demin. Any ideas of how can I do that without the app being full screen?

Kirill Grouchnikov

05/11/2022, 6:30 PM

A little shader demo that tracks mouse clicks and does dynamic RGB channel displacement.

rgb-displacement.mov

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samuel

05/11/2022, 10:02 PM

Perhaps this is general desktop development question but using Jetpack compose is my first time doing this and I have a question regarding storing sensitive data e.g tokens in a desktop context. I’m playing around with building a Mac app and i wonder how to approach saving sensitive data specifically on Mac that would be entered once but should be persisted for as long as it does not need to change. What is the recommended approach? Does anyone have/know a sample of something like this?

smit01

05/12/2022, 4:35 PM

I am newbie with jetpack compose and i am trying to create dashboard desktop application to learn and i am seeing this error tried looking on stack overflow but didn't find any solution. Would you mind helping me resolve this.

Brian Guertin

05/12/2022, 7:15 PM

Is there some way to disable Compose for iOS target? I don't use it on iOS but it's breaking my multiplatform build: > Task :jgosdk:compileKotlinIosArm64

e: Compilation failed: Cannot find the Composer class in the classpath

saket

05/13/2022, 5:06 AM

Has anyone managed to create a menu bar app that displays a window on click? Something similar to Jetbrains Toolbox.

Alexander Maryanovsky

05/13/2022, 6:05 AM

Hi. I found the direct cause of a rather frequent crash that has been reported (twice) a while ago. I added a comment to the ticket(s), but it doesn’t seem to be getting any attention, probably because it’s an existing, old, ticket. Should I open another ticket, or wait patiently? https://github.com/JetBrains/compose-jb/issues/940 https://github.com/JetBrains/compose-jb/issues/575

Landry Norris

05/13/2022, 6:11 PM

I am glad to see how well compose multiplatform does with platform integration. I am using the experimental support for iOS in a toy project, and I can already render a static UIView to a Composable. Working on touch support now.

Alexander Suraphel

05/14/2022, 12:16 PM

Is it possible to use Android widgets like

androidx.compose.material.Button

to build a compose desktop app? I want to reuse the layout I have for tablets…

:yes: 4

Alexander Suraphel

05/15/2022, 12:29 PM

How do you handle navigation on compose desktop app? I’m coming from Android and I am trying to port the tablet layout to desktop.

PHondogo

05/16/2022, 10:50 AM

Hello! When running desktop version of compose and making first right click on text field, message logged:

Exception "java.lang.ClassNotFoundException: com/intellij/codeInsight/editorActions/FoldingData"while constructing DataFlavor for: application/x-java-jvm-local-objectref; class=com.intellij.codeInsight.editorActions.FoldingData

what does it means?

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Yan Pujante

05/16/2022, 5:41 PM

I am trying to size a canvas based on an image that I draw into the canvas, but there is a mismatch between the size the canvas expect (dp) and the size of the image (pixels). Is there a way to go around this?

@Composable
fun Panel(image: ImageBitmap) {
    Canvas(modifier = Modifier
        .size(image.width.dp, image.height.dp) // doesn't work (mismatch size)
        .border(1.dp, Color.Red)) {
        drawIntoCanvas { canvas ->
            canvas.withSave {
                canvas.drawImage(image, Offset(0f, 0f), Paint())
            }
        }
    }
}

Lawrence

05/16/2022, 8:25 PM

I want to open a window when a barcode scanner scans something. The scanner operates like a keyboard so I get a string of information. I want to add a listener that can intercept keyboard input and open the window if it matches the barcode format. I am thinking I need to add like a hidden TextField in my view and then handle it from there. Any suggestions?

Sebastian Kürten

05/16/2022, 8:41 PM

I'd like to render my UI to a PNG file in order to automate taking screenshots of an app. I found out it is possible for Swing like this (https://stackoverflow.com/questions/5853879/swing-obtain-image-of-jframe). I have not tried it, but I'm presuming this method won't work with compose as rendering goes through skija/skiko right? Would there be a similar mechanism that could be employed for compose's rendering engine?

Jose Luis Torres Aguilar

05/17/2022, 4:20 PM

Hey Guys, I’m having an issue with the date picker on desktop compose. When I use my app on the secondary monitor and try to open the datepicker it shows on my principal monitor, so Anyone know how to keep the datepicker and my app on the same window?

Jakob K

05/17/2022, 6:30 PM

How can I disable the gray hover effect for hoverable composables? In this case it is a

NavigationRailItem

inside a

NavigationRail

(both from

material3

and not m2).

Lawrence

05/17/2022, 7:10 PM

Is it possible to allow a layout such as Column to have flexible size but also have a cap on its maximum size? Like using

Modifier.fillMaxWidth(0.75f)

to allow it to grow to occupy 75% of max width but also limiting the max width to

500.dp

Jakob K

05/18/2022, 9:14 PM

Every time I try to handle (catch etc) an exception inside

produceState

it throws another exception at a higher level and crashes the application (I posted that exception inside the thread). Am I doing something wrong here?

smallshen

05/19/2022, 12:14 AM

https://github.com/smallshen/JWM-Compose Use Jetpack compose with JWM(https://github.com/HumbleUI/JWM) There are problems with keys (https://github.com/smallshen/JWM-Compose/blob/00cc0a31872a3220850f5e7f1af7c62e2eae292e/src/main/kotlin/club/eridani/compose/jwm/ApplicationWindow.kt#L115) It would be nice if someone could fix these problems (but I think compose-jb needs to make some awt hardcoded parts more "generic").

Norbi

05/19/2022, 8:06 AM

Was anyone able to try compose-jb v1.2.0-alpha01-dev686? I tried to upgrade to it from 1.1.1 but I always get various build errors like

Caused by: org.gradle.internal.resolve.ModuleVersionNotFoundException: Could not find org.jetbrains.compose.compiler:compiler:1.2.0-alpha01-dev686.

or some other error 😞 My goal is to use Kotlin 1.6.21... Thanks.

spierce7

05/19/2022, 7:34 PM

Does anyone know how to do either of the following: 1. Turn a

Painter

into a skia

Image

2. Turn an SVG into a skia

Image

instead of a

Painter

David W

05/20/2022, 1:35 AM

Is there a way to tell Compose "do not position anything here, it's out of bounds"?

xxfast

05/20/2022, 7:08 AM

is there a way to have a platform-native context menu (right-click menu)?

ynsok

05/20/2022, 7:18 AM

Hi 😄 I’m trying run a multiplatform project on Windows and this error occurs, any idea what is happening ?

Title

ynsok

05/20/2022, 7:18 AM

Hi 😄 I’m trying run a multiplatform project on Windows and this error occurs, any idea what is happening ?

PHondogo

05/20/2022, 10:29 AM

You should add dependency ComposePlugin.Dependencies.desktop.currentOs

ynsok

05/20/2022, 11:26 AM

I’ve added and still doesn’t work

Dragos Rachieru

05/23/2022, 1:29 PM

did you sync before running again? Try building the project to see if it fails

you also forgot a

in the last screenshot

and I don't know if

jvmMain {

works, I only use

val jvmMain by getting {
  dependencies {
    implementation(compose.desktop.currentOs)
  }
}

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