Igor Demin
4 years ago
8 changed files with 303 additions and 142 deletions
@ -0,0 +1,27 @@
|
||||
package example.imageviewer.view |
||||
|
||||
import androidx.compose.foundation.background |
||||
import androidx.compose.foundation.layout.Box |
||||
import androidx.compose.foundation.layout.fillMaxSize |
||||
import androidx.compose.material.Text |
||||
import androidx.compose.runtime.Composable |
||||
import androidx.compose.ui.Alignment |
||||
import androidx.compose.ui.Modifier |
||||
import androidx.compose.ui.graphics.Color |
||||
import androidx.compose.ui.text.font.FontWeight |
||||
import androidx.compose.ui.unit.sp |
||||
import example.imageviewer.style.DarkGray |
||||
|
||||
@Composable |
||||
fun SplashUI() { |
||||
Box(Modifier.fillMaxSize().background(DarkGray)) { |
||||
Text( |
||||
// TODO implement common resources |
||||
"Image Viewer", |
||||
Modifier.align(Alignment.Center), |
||||
color = Color.White, |
||||
fontWeight = FontWeight.Bold, |
||||
fontSize = 100.sp |
||||
) |
||||
} |
||||
} |
||||
@ -0,0 +1,153 @@
|
||||
package example.imageviewer.utils |
||||
|
||||
import androidx.compose.desktop.AppManager |
||||
import androidx.compose.desktop.AppWindow |
||||
import androidx.compose.desktop.WindowEvents |
||||
import androidx.compose.runtime.Applier |
||||
import androidx.compose.runtime.Composable |
||||
import androidx.compose.runtime.DisposableEffect |
||||
import androidx.compose.runtime.ExperimentalComposeApi |
||||
import androidx.compose.runtime.LaunchedEffect |
||||
import androidx.compose.runtime.Recomposer |
||||
import androidx.compose.runtime.compositionFor |
||||
import androidx.compose.runtime.dispatch.MonotonicFrameClock |
||||
import androidx.compose.runtime.emptyContent |
||||
import androidx.compose.runtime.getValue |
||||
import androidx.compose.runtime.mutableStateOf |
||||
import androidx.compose.runtime.remember |
||||
import androidx.compose.runtime.setValue |
||||
import androidx.compose.ui.unit.IntOffset |
||||
import androidx.compose.ui.unit.IntSize |
||||
import androidx.compose.ui.window.MenuBar |
||||
import kotlinx.coroutines.CoroutineScope |
||||
import kotlinx.coroutines.CoroutineStart |
||||
import kotlinx.coroutines.Dispatchers |
||||
import kotlinx.coroutines.ExperimentalCoroutinesApi |
||||
import kotlinx.coroutines.cancel |
||||
import kotlinx.coroutines.launch |
||||
import java.awt.image.BufferedImage |
||||
import javax.swing.SwingUtilities |
||||
import kotlin.system.exitProcess |
||||
|
||||
fun Application( |
||||
content: @Composable ApplicationScope.() -> Unit |
||||
) = SwingUtilities.invokeLater { |
||||
AppManager.setEvents(onWindowsEmpty = null) |
||||
val scope = ApplicationScope(content) |
||||
scope.start() |
||||
} |
||||
|
||||
@OptIn(ExperimentalComposeApi::class, ExperimentalCoroutinesApi::class) |
||||
class ApplicationScope( |
||||
private val content: @Composable ApplicationScope.() -> Unit |
||||
) { |
||||
private val frameClock = ImmediateFrameClock() |
||||
private val context = Dispatchers.Main + frameClock |
||||
private val scope = CoroutineScope(context) |
||||
|
||||
private val recomposer = Recomposer(context) |
||||
private val composition = compositionFor(Unit, EmptyApplier(), recomposer) |
||||
|
||||
private val windows = mutableSetOf<AppWindow>() |
||||
private var windowsVersion by mutableStateOf(Any()) |
||||
|
||||
fun start() { |
||||
scope.launch(start = CoroutineStart.UNDISPATCHED) { |
||||
recomposer.runRecomposeAndApplyChanges() |
||||
} |
||||
composition.setContent { |
||||
content() |
||||
WindowsMonitor() |
||||
} |
||||
} |
||||
|
||||
@Composable |
||||
private fun WindowsMonitor() { |
||||
LaunchedEffect(windowsVersion) { |
||||
if (windows.isEmpty()) { |
||||
dispose() |
||||
exitProcess(0) |
||||
} |
||||
} |
||||
} |
||||
|
||||
private fun dispose() { |
||||
composition.dispose() |
||||
scope.cancel() |
||||
} |
||||
|
||||
// TODO make parameters observable (now if any parameter is changed we don't change the window) |
||||
@Composable |
||||
fun ComposableWindow( |
||||
title: String = "JetpackDesktopWindow", |
||||
size: IntSize = IntSize(800, 600), |
||||
location: IntOffset = IntOffset.Zero, |
||||
centered: Boolean = true, |
||||
icon: BufferedImage? = null, |
||||
menuBar: MenuBar? = null, |
||||
undecorated: Boolean = false, |
||||
resizable: Boolean = true, |
||||
events: WindowEvents = WindowEvents(), |
||||
onDismissRequest: (() -> Unit)? = null, |
||||
content: @Composable () -> Unit = emptyContent() |
||||
) { |
||||
var isOpened by remember { mutableStateOf(true) } |
||||
if (isOpened) { |
||||
DisposableEffect(Unit) { |
||||
lateinit var window: AppWindow |
||||
|
||||
fun onClose() { |
||||
if (isOpened) { |
||||
windows.remove(window) |
||||
onDismissRequest?.invoke() |
||||
windowsVersion = Any() |
||||
isOpened = false |
||||
} |
||||
} |
||||
|
||||
window = AppWindow( |
||||
title = title, |
||||
size = size, |
||||
location = location, |
||||
centered = centered, |
||||
icon = icon, |
||||
menuBar = menuBar, |
||||
undecorated = undecorated, |
||||
resizable = resizable, |
||||
events = events, |
||||
onDismissRequest = { |
||||
onClose() |
||||
} |
||||
) |
||||
|
||||
windows.add(window) |
||||
window.show(recomposer, content) |
||||
|
||||
onDispose { |
||||
if (!window.isClosed) { |
||||
window.close() |
||||
} |
||||
onClose() |
||||
} |
||||
} |
||||
} |
||||
} |
||||
} |
||||
|
||||
private class ImmediateFrameClock : MonotonicFrameClock { |
||||
override suspend fun <R> withFrameNanos( |
||||
onFrame: (frameTimeNanos: Long) -> R |
||||
) = onFrame(System.nanoTime()) |
||||
} |
||||
|
||||
@OptIn(ExperimentalComposeApi::class) |
||||
private class EmptyApplier : Applier<Unit> { |
||||
override val current: Unit = Unit |
||||
override fun down(node: Unit) = Unit |
||||
override fun up() = Unit |
||||
override fun insertTopDown(index: Int, instance: Unit) = Unit |
||||
override fun insertBottomUp(index: Int, instance: Unit) = Unit |
||||
override fun remove(index: Int, count: Int) = Unit |
||||
override fun move(from: Int, to: Int, count: Int) = Unit |
||||
override fun clear() = Unit |
||||
} |
||||
Loading…
Reference in new issue