What is the most optimal way to write a load of pixels to Canvas or Image? I use drawPixels now, but I have a lot of different colors so that results in a lot of different drawPixels calls. In a non Compose world I'd just fill a bitmap and render that but I have trouble finding this. I see the ImageBitmap and Painter interfaces, but I haven't found a way to use them correctly.

is there any way to hide title bar and add some padding to window traffic lights (controls). ?

Which database to use in desktop-compose, can we use firebase ?

I want to develop an android app and desktop app in the same codebase

Hi, is there any tools that you know about (e.g a gradle plugin) that generates something similar to android's R.drawable from a compose desktop `main/resources`folder? What I would like to achieve is to avoid referencing the image path as a string when using

painterResource

, but instead to get a class with all the resources paths generated at build time and get a build error if some resource is missing.

Hi, can I export some already painted composable (or a moment before) into file or clipboard when application is launched? Plus can I do it (it can be just standard @preview) without launching application using for example gradle task?

I've got a silly question. I have a state that have a default value passed as parameter. In general, I want to be managed inside the component, but if the default value is changed, I wand inner state to be reset to the new default value. Which is the simplest way to do that?

If anyone is interested, Luca Spinazzola has been working on supporting iOS, macOS, and JS targets in Kamel (an Image loading library) for a while. Feel free to check it and give us some feedback:

implementation("io.github.luca992.com.alialbaali.kamel:kamel-image:0.5-darwinandjs0")

Hi guys, how can we use Firebase in compose-desktop?

Hi everyone! 1. When building a linux native distribution, the laucher desktop file is packaged in

<installationPath>/lib/<packageName>/<packageName>-<packageName>.desktop

. I would like it to be contributed instead to

<installationPath>/share/applications

as per the XDG specification. How can I do that? 2. Also is it possible to have another name for the executable file than the

packageName

?

I’m finding I can’t release the next version of my desktop app because certain files in library jars aren’t getting signed. I included the opencv library in the app, and files that don’t have extensions aren’t being signed, and

.so

files aren’t being signed. •

opencv-4.5.5-1.5.7-macosx-x86_64-a0d7ee8b1156d370a1c4e8b92fc4f799.jar/org/bytedeco/opencv/macosx-x86_64/opencv_interactive-calibration

•

opencv-4.5.5-1.5.7-macosx-x86_64-a0d7ee8b1156d370a1c4e8b92fc4f799.jar/org/bytedeco/opencv/macosx-x86_64/python/cv2.cpython-310-darwin.so

On a side note, if anyone knows of a better way to access the camera of a laptop in java than opencv, let me know 😄 What can I do to get these files signed, ideally by compose, the same way my other files are signed?

was trying call the first element of a

mutableState

containing

List<List<Any>>

before passing it

LazyColumn

items()

but every time I tried so am introduced with

Compose Disposed, the List is empty

which normally isn't empty if you passed the whole list of list through

LazyColumn

items()

Hello! Is it possible to create distributions each for each platform from Linux PC?

Finally we got ProGuard support for Compose for Desktop! 🎉🚀 For me this is a big step towards broader adoption in the industry because you just can't do commercial apps without obfuscation. https://github.com/JetBrains/compose-jb/pull/2313

Is it possible to create several distribution configurations in one Gradle module? I have 2 fat jars in one Gradle module and want each to be packaged in separate DEB.

When I try to run UI tests in my

jvm

Compose Project, I immediately get an exception

'void org.jetbrains.skia.paragraph.ParagraphStyleKt._nSetTextIndent(long, float, float)'
java.lang.UnsatisfiedLinkError: 'void org.jetbrains.skia.paragraph.ParagraphStyleKt._nSetTextIndent(long, float, float)'
	at org.jetbrains.skia.paragraph.ParagraphStyleKt._nSetTextIndent(Native Method)
	at org.jetbrains.skia.paragraph.ParagraphStyleKt.access$_nSetTextIndent(ParagraphStyle.kt:1)
	at org.jetbrains.skia.paragraph.ParagraphStyle.setTextIndent(ParagraphStyle.kt:182)
	at androidx.compose.ui.text.platform.ParagraphBuilder.textStyleToParagraphStyle(SkiaParagraph.skiko.kt:776)
	at androidx.compose.ui.text.platform.ParagraphBuilder.build(SkiaParagraph.skiko.kt:566)
	at androidx.compose.ui.text.platform.ParagraphLayouter.<init>(ParagraphLayouter.skiko.kt:71)

as soon as the Composable under test contains a

Text(String)

, so this fails:

class ComposeTest {
    @get:Rule
    val composeTestRule = createComposeRule()
    @Test
    fun firstTest() {
        composeTestRule.setContent {
            Text("Hello")
        }
    }
}

whereas this does not:

class ComposeTest {
    @get:Rule
    val composeTestRule = createComposeRule()
    @Test
    fun firstTest() {
        composeTestRule.setContent {
            Button({}){}
        }
    }
}

Does anyone have an idea what the problem could be?

Hello,How can I get a tab list like

TabRow

but vertical arrangement

hi folks. I am trying to build a small app to send files from my android to my mac wirelessly. I found out about bonjour that helps discover nearby devices and I was able to detect my MBP from my android. Any hints towards what APIs (desktop + android) I need to use in order to do the actual sharing? I first spotted WiFi-Direct but it seems like Apple doesn’t support it. Anyone has experience with such use case?

Hello, was using jp compose with custom built

JavaFXPanel

composable [https://github.com/JetBrains/compose-jb/issues/519#issuecomment-804030550] and was trying to display a stream of data from

Channels

inside it however when Recomposing JavaFXPanel it suddenly stop to listen for the channel and clears the view so to figure out what's going on created a simple composable containing either of those

// v1
JavaFXPanel(jfxpanel: JFXPanel, container: Container){
     Platform.runLater { 
        print("hello")
    }
}
// v2
JavaFXPanel(jfxpanel: JFXPanel, container: Container){
     CoroutineScope(JavaFx).launch { 
        print("hello")
    }
}

overall started with v1 prints hello and never made it when it recompose, v2 was identical too also tried to create custom panel by adding

SideEffect

which barely do to a thing

fun JavaFXPanel(
    root: Container,
    panel: JFXPanel,
 onCreate: () -> Unit


) {
    val container = remember { JPanel() }
    val density = LocalDensity.current.density

    Layout(
        content =
        {}
        ,
        modifier = Modifier.onGloballyPositioned { childCoordinates ->
            val coordinates = childCoordinates.parentCoordinates!!
            val location = coordinates.localToWindow(Offset.Zero).round()
            val size = coordinates.size
            container.setBounds(
                (location.x / density).toInt(),
                (location.y / density).toInt(),
                (size.width / density).toInt(),
                (size.height / density).toInt()
            )
            container.validate()
            container.repaint()
        },
        measurePolicy = { _, _ ->
            layout(0, 0) {}
        }
    )

    DisposableEffect(Unit) {

        onCreate()
        container.layout = BorderLayout(0, 0)
        container.add(panel)
        

        root.add(container)


        onDispose {
            root.remove(container)
        }
    }

    SideEffect {

        onCreate()
    }
}

I’m facing an issue when using DropdownMenu. I don’t know if it’s a bug or I’m missing something. More details in the thread.

Anyone trying to perform network calls and facing

Exception in thread "main" java.lang.NoClassDefFoundError: java/net/http/HttpClient$Version

? More here https://kotlinlang.slack.com/archives/C3PQML5NU/p1663372636232599

Hi All, is it possible to call native OS APIs from within a compose desktop app? E.g. when running on MacOS call some Apple Framework, when on Windows call a Windows API.

There is

SplitPane

experimental component https://github.com/JetBrains/compose-jb/tree/master/components/SplitPane It supports vertical/horizontal split pane with a handle and resizing. But not something collapse-to-icons out of the box

What specific version of Kotlin does Compose Desktop 1.2 beta require, does anyone know? I get an error if I try to use anything less than Kotlin 1.7.10, however, the actual dependency information of the Compose 1.2 libraries states that they depend on Kotlin 1.6. Gradle force upgrades those dependencies to 1.7 usually, but if I resolve Compose Desktop in a different configuration where I haven't forcibly imported the Kotlin 1.7 standard library then I end up with the "wrong" old versions of the Kotlin stdlib. Is there a plan to switch all the libraries to depend on Kotlin 1.7 before release so it's all consistent?

Probably gonna seem dumb for asking this. But how do people do stuff in compose desktop since you don't have a "VM" like in Android? I understand that AAC VM is an uneeded thing, but I've only ever really done android dev and so im confused on how you'd create a presenter or something that survives for the "lifetime" of a "screen" in the compose desktop world.

I read a State<T> in a Deffered created in Dispatchers.Default and got this exception. Does this mean it is unsafe to read/write State and MutableState in threads other than the main thread? Or am I missing something here? Thanks

java.lang.IllegalStateException: Method should be called from AWT event dispatch thread
	at org.jetbrains.skiko.SkiaLayer.needRedraw(SkiaLayer.awt.kt:427)

I'm a Native Android developer for a few years now, but it's my first week trying out compose desktop, and I would like to know if and how it's possible to startup the application on Windows reboot? (Links to documentation etc. are also ok.)

I just made the mistake to upgrade to the latest IntelliJ EAP 2002.3 bringing me from a fully working multiplatform build to a completely defunct one. Can anybody tell me how I can fix the following build error?

Cannot add task 'packageRelease' as a task with that name already exists.

Full stacktrace in thread ->

Is there anyway for me to make a window draggable if I've removed the decoration? I'm guessing I'd have to punch into Swing to do it?