Its own set of implementations for obtaining the terminal size on eac…

…h platform

gradle/libs.versions.toml

@@ -19,7 +19,7 @@ spotless-gradlePlugin = "com.diffplug.spotless:spotless-plugin-gradle:6.25.0"
 ktlint-core = "com.pinterest.ktlint:ktlint-cli:1.3.0"
 ktlint-composeRules = "io.nlopez.compose.rules:ktlint:0.4.4"
 
-jansi = "org.fusesource.jansi:jansi:2.4.1"
+jline3 = "org.jline:jline:3.26.1"
 mordant = "com.github.ajalt.mordant:mordant:2.6.0"
 codepoints = "de.cketti.unicode:kotlin-codepoints:0.8.0"
 

mosaic-runtime/build.gradle

@@ -35,7 +35,7 @@ kotlin {
 		jvmMain {
 			dependsOn(concurrentMain)
 			dependencies {
-				implementation libs.jansi
+				implementation libs.jline3
 			}
 		}
 		nonJvmMain {

mosaic-runtime/src/appleMain/kotlin/com/jakewharton/mosaic/platform.kt

@@ -0,0 +1,20 @@
+package com.jakewharton.mosaic
+
+import com.jakewharton.mosaic.ui.unit.IntSize
+import kotlinx.cinterop.ExperimentalForeignApi
+import kotlinx.cinterop.alloc
+import kotlinx.cinterop.memScoped
+import platform.posix.STDIN_FILENO
+import platform.posix.TIOCGWINSZ
+import platform.posix.ioctl
+import platform.posix.winsize
+
+@OptIn(ExperimentalForeignApi::class)
+internal actual fun getPlatformTerminalSize(): IntSize = memScoped {
+	val size = alloc<winsize>()
+	if (ioctl(STDIN_FILENO, TIOCGWINSZ, size) < 0) {
+		IntSize.Zero
+	} else {
+		IntSize(width = size.ws_col.toInt(), height = size.ws_row.toInt())
+	}
+}

mosaic-runtime/src/commonMain/kotlin/com/jakewharton/mosaic/mosaic.kt

@@ -11,7 +11,6 @@ import androidx.compose.runtime.snapshots.Snapshot
 import com.github.ajalt.mordant.terminal.Terminal as MordantTerminal
 import com.jakewharton.mosaic.layout.MosaicNode
 import com.jakewharton.mosaic.ui.BoxMeasurePolicy
-import com.jakewharton.mosaic.ui.unit.IntSize
 import kotlin.time.ExperimentalTime
 import kotlinx.coroutines.CompletableDeferred
 import kotlinx.coroutines.CoroutineScope
@@ -98,24 +97,14 @@ public suspend fun runMosaic(body: suspend MosaicScope.() -> Unit): Unit = corou
 		}
 	}
 
-	val terminalInfo = mutableStateOf(
-		Terminal(
-			size = IntSize(terminal.info.width, terminal.info.height),
-		),
-	)
-
+	val terminalInfo = mutableStateOf(Terminal(size = getPlatformTerminalSize()))
 	launch(context = composeContext) {
+		var terminalSize = terminalInfo.value.size
 		while (true) {
-			val currentTerminalInfo = terminalInfo.value
-			if (terminal.info.updateTerminalSize() &&
-				(
-					currentTerminalInfo.size.width != terminal.info.width ||
-						currentTerminalInfo.size.height != terminal.info.height
-					)
-			) {
-				terminalInfo.value = Terminal(
-					size = IntSize(terminal.info.width, terminal.info.height),
-				)
+			val newTerminalSize = getPlatformTerminalSize()
+			if (newTerminalSize != terminalSize) {
+				terminalInfo.value = Terminal(size = newTerminalSize)
+				terminalSize = newTerminalSize
 			}
 			delay(50)
 		}

mosaic-runtime/src/commonMain/kotlin/com/jakewharton/mosaic/platform.kt

@@ -1,3 +1,7 @@
 package com.jakewharton.mosaic
 
+import com.jakewharton.mosaic.ui.unit.IntSize
+
 internal expect fun platformDisplay(chars: CharSequence)
+
+internal expect fun getPlatformTerminalSize(): IntSize

mosaic-runtime/src/jsMain/kotlin/com/jakewharton/mosaic/platform.kt

@@ -0,0 +1,14 @@
+package com.jakewharton.mosaic
+
+import com.jakewharton.mosaic.ui.unit.IntSize
+
+private external val process: dynamic
+
+internal actual fun getPlatformTerminalSize(): IntSize {
+	val size = process.stdout.getWindowSize()
+	return if (size == undefined) {
+		IntSize.Zero
+	} else {
+		IntSize(width = size[0] as Int, height = size[1] as Int)
+	}
+}

mosaic-runtime/src/jvmMain/kotlin/com/jakewharton/mosaic/platform.kt

@@ -1,11 +1,14 @@
 package com.jakewharton.mosaic
 
+import com.jakewharton.mosaic.ui.unit.IntSize
 import java.nio.CharBuffer
 import java.nio.charset.StandardCharsets.UTF_8
-import org.fusesource.jansi.AnsiConsole
+import org.jline.terminal.TerminalBuilder
 
-private val out = AnsiConsole.out()!!.also { AnsiConsole.systemInstall() }
-private val encoder = UTF_8.newEncoder()!!
+/* invoking enterRawMode - it is a hack to use key events in samples */
+private val terminal = TerminalBuilder.terminal().also { it.enterRawMode() }
+private val out = terminal.output()
+private val encoder = UTF_8.newEncoder()
 
 internal actual fun platformDisplay(chars: CharSequence) {
 	// Write a single byte array to stdout to create an atomic visual change. If you instead write
@@ -20,3 +23,7 @@ internal actual fun platformDisplay(chars: CharSequence) {
 	// buffered and not processed until the next frame, or not at all on the final frame.
 	out.flush()
 }
+
+internal actual fun getPlatformTerminalSize(): IntSize {
+	return IntSize(terminal.width, terminal.height)
+}

mosaic-runtime/src/linuxMain/kotlin/com/jakewharton/mosaic/platform.kt

@@ -0,0 +1,20 @@
+package com.jakewharton.mosaic
+
+import com.jakewharton.mosaic.ui.unit.IntSize
+import kotlinx.cinterop.ExperimentalForeignApi
+import kotlinx.cinterop.alloc
+import kotlinx.cinterop.memScoped
+import platform.linux.ioctl
+import platform.posix.STDIN_FILENO
+import platform.posix.TIOCGWINSZ
+import platform.posix.winsize
+
+@OptIn(ExperimentalForeignApi::class)
+internal actual fun getPlatformTerminalSize(): IntSize = memScoped {
+	val size = alloc<winsize>()
+	if (ioctl(STDIN_FILENO, TIOCGWINSZ.toULong(), size) < 0) {
+		IntSize.Zero
+	} else {
+		IntSize(width = size.ws_col.toInt(), height = size.ws_row.toInt())
+	}
+}

mosaic-runtime/src/mingwMain/kotlin/com/jakewharton/mosaic/platform.kt

@@ -0,0 +1,25 @@
+package com.jakewharton.mosaic
+
+import com.jakewharton.mosaic.ui.unit.IntSize
+import kotlinx.cinterop.ExperimentalForeignApi
+import kotlinx.cinterop.alloc
+import kotlinx.cinterop.memScoped
+import kotlinx.cinterop.ptr
+import platform.windows.CONSOLE_SCREEN_BUFFER_INFO
+import platform.windows.GetConsoleScreenBufferInfo
+import platform.windows.GetStdHandle
+import platform.windows.INVALID_HANDLE_VALUE
+import platform.windows.STD_OUTPUT_HANDLE
+
+@OptIn(ExperimentalForeignApi::class)
+internal actual fun getPlatformTerminalSize(): IntSize = memScoped {
+	val csbi = alloc<CONSOLE_SCREEN_BUFFER_INFO>()
+	val stdoutHandle = GetStdHandle(STD_OUTPUT_HANDLE)
+	if (stdoutHandle == INVALID_HANDLE_VALUE) {
+		return@memScoped IntSize.Zero
+	}
+	if (GetConsoleScreenBufferInfo(stdoutHandle, csbi.ptr) == 0) {
+		return@memScoped IntSize.Zero
+	}
+	csbi.srWindow.run { IntSize(width = Right - Left + 1, height = Bottom - Top + 1) }
+}

samples/robot/build.gradle

@@ -8,5 +8,5 @@ application {
 
 dependencies {
 	implementation projects.mosaicRuntime
-	implementation 'org.jline:jline:3.26.1'
+	implementation libs.jline3
 }

samples/rrtop/build.gradle

@@ -9,5 +9,5 @@ application {
 dependencies {
 	implementation projects.mosaicRuntime
 	implementation 'org.jetbrains.kotlinx:kotlinx-datetime:0.6.0'
-	implementation 'org.jline:jline:3.26.1'
+	implementation libs.jline3
 }