Support synchronized update (#357)

JakeWharton · Jun 4, 2024 · e36abdc · e36abdc
1 parent be8adb1
commit e36abdc
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -3,7 +3,7 @@
 ## [Unreleased]
 
 New:
-- Nothing yet!
+- Support synchronized terminal update for rendering.
 
 Changed:
 - Сhange `DrawScope#drawRect` API with the ability to draw with text characters and specify `DrawStyle` (`Fill` or `Stroke`).

diff --git a/mosaic-runtime/src/commonMain/kotlin/com/jakewharton/mosaic/ansi.kt b/mosaic-runtime/src/commonMain/kotlin/com/jakewharton/mosaic/ansi.kt
@@ -8,6 +8,9 @@ import kotlin.math.roundToInt
 private const val ESC = "\u001B"
 internal const val CSI = "$ESC["
 
+internal const val ansiBeginSynchronizedUpdate = "$CSI?2026h"
+internal const val ansiEndSynchronizedUpdate = "$CSI?2026l"
+
 internal const val ansiReset = "${CSI}0"
 internal const val clearLine = "${CSI}K"
 internal const val cursorUp = "${CSI}F"

diff --git a/mosaic-runtime/src/commonMain/kotlin/com/jakewharton/mosaic/mosaic.kt b/mosaic-runtime/src/commonMain/kotlin/com/jakewharton/mosaic/mosaic.kt
@@ -77,7 +77,7 @@ public suspend fun runMosaic(body: suspend MosaicScope.() -> Unit): Unit = corou
 	var displaySignal: CompletableDeferred<Unit>? = null
 	val applier = MosaicNodeApplier(rootNode) {
 		val render = rendering.render(rootNode)
-		platformDisplay(render)
+		platformDisplay("$ansiBeginSynchronizedUpdate$render$ansiEndSynchronizedUpdate")
 
 		displaySignal?.complete(Unit)
 		hasFrameWaiters = false