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better cursor position

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Evgeny @ SimpleX Chat committed 2026-04-01 14:34:29 +00:00
1 parent 66c992e14d
commit 9c8473451d
2 files changed
+14 -5
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apps/multiplatform/common/src/commonMain/kotlin/chat/simplex/common/views/chat/TextSelection.kt
+8 -2
View File
@@ -58,12 +58,18 @@ class SelectionManager {
var range by mutableStateOf<SelectionRange?>(null)
private set
var anchorWindowY by mutableStateOf(0f)
private set
var anchorWindowX by mutableStateOf(0f)
private set
var focusWindowY by mutableStateOf(0f)
var focusWindowX by mutableStateOf(0f)
fun startSelection(startIndex: Int) {
fun startSelection(startIndex: Int, anchorY: Float, anchorX: Float) {
range = SelectionRange(startIndex, -1, startIndex, -1)
selectionState = SelectionState.Selecting
anchorWindowY = anchorY
anchorWindowX = anchorX
}
fun setAnchorOffset(offset: Int) {
@@ -233,7 +239,7 @@ fun BoxScope.SelectionHandler(
val idx = resolveIndexAtY(listState.value, localStart.y)
Log.e(TAG, "dragStart localStart=$localStart windowStart=$windowStart idx=$idx")
if (idx != null) {
manager.startSelection(idx)
manager.startSelection(idx, windowStart.y, windowStart.x)
manager.focusWindowY = windowStart.y
manager.focusWindowX = windowStart.x
}
apps/multiplatform/common/src/commonMain/kotlin/chat/simplex/common/views/chat/item/FramedItemView.kt
+6 -3
View File
@@ -389,9 +389,9 @@ fun CIMarkdownText(
val bounds = boundsState.value ?: return@LaunchedEffect
val layout = layoutResultState.value ?: return@LaunchedEffect
val offset = layout.getOffsetForPosition(
Offset(selectionManager.focusWindowX - bounds.left, selectionManager.focusWindowY - bounds.top)
Offset(selectionManager.anchorWindowX - bounds.left, selectionManager.anchorWindowY - bounds.top)
)
Log.e(TAG, "anchorOffset idx=$selectionIndex offset=$offset bounds=$bounds pointer=(${selectionManager.focusWindowX},${selectionManager.focusWindowY})")
Log.e(TAG, "anchorOffset idx=$selectionIndex offset=$offset bounds=$bounds pointer=(${selectionManager.anchorWindowX},${selectionManager.anchorWindowY})")
selectionManager.setAnchorOffset(offset)
}
@@ -420,7 +420,10 @@ fun CIMarkdownText(
Box(
Modifier
.padding(vertical = 7.dp, horizontal = 12.dp)
.then(if (selectionManager != null) Modifier.onGloballyPositioned { boundsState.value = it.boundsInWindow() } else Modifier)
.then(if (selectionManager != null) Modifier.onGloballyPositioned {
val pos = it.positionInWindow()
boundsState.value = Rect(pos.x, pos.y, pos.x + it.size.width, pos.y + it.size.height)
} else Modifier)
) {
MarkdownText(
text, if (text.isEmpty()) emptyList() else ci.formattedText, toggleSecrets = true,