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Code Issues Packages Projects Releases Wiki Activity

Fix the image transition

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Signed-off-by: denis0001-dev <denis0001.dev@ya.ru>
This commit is contained in:
denis0001-dev
2026-02-26 19:21:59 +03:00
Unverified
parent 6303657e10
commit 97d309050f
8 changed files with 314 additions and 43 deletions
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app/shared/build.gradle.kts
-1
View File
@@ -53,7 +53,6 @@ kotlin {
implementation(libs.constraintlayout)
implementation(libs.navigation.compose)
implementation(libs.compose.materialIconsExtended)
implementation("androidx.compose.animation:animation:1.8.4")
implementation(libs.haze)
implementation(libs.haze.materials)
implementation(libs.androidx.core.ktx)
app/shared/src/androidMain/kotlin/ru/fromchat/ui/SystemBarsVisibility.android.kt
+25
View File
@@ -0,0 +1,25 @@
package ru.fromchat.ui
import android.app.Activity
import androidx.compose.runtime.Composable
import androidx.compose.runtime.remember
import androidx.compose.ui.platform.LocalView
import androidx.core.view.WindowCompat
import androidx.core.view.WindowInsetsCompat
@Composable
actual fun rememberSystemBarsController(): ((Boolean) -> Unit)? {
val view = LocalView.current
return remember(view) {
val activity = view.context as? Activity ?: return@remember null
val window = activity.window ?: return@remember null
val controller = WindowCompat.getInsetsController(window, view) ?: return@remember null
{ visible: Boolean ->
if (visible) {
controller.show(WindowInsetsCompat.Type.statusBars())
} else {
controller.hide(WindowInsetsCompat.Type.statusBars())
}
}
}
}
app/shared/src/commonMain/kotlin/ru/fromchat/ui/App.kt
+4 -1
View File
@@ -32,6 +32,8 @@ import ru.fromchat.ui.dm.DmContainerScreen
import ru.fromchat.ui.main.MainScreen
import ru.fromchat.ui.profile.ProfileScreen
import ru.fromchat.ui.setup.ServerConfigScreen
import ru.fromchat.ui.LocalSystemBarsVisibility
import ru.fromchat.ui.rememberSystemBarsController
val LocalNavController = compositionLocalOf<NavController> { error("NavController not provided") }
@@ -104,7 +106,8 @@ fun App(scrollToMessageId: Int? = null, startAtPublicChat: Boolean = false) {
}
CompositionLocalProvider(
LocalNavController provides navController
LocalNavController provides navController,
LocalSystemBarsVisibility provides rememberSystemBarsController()
) {
if (startDestination != null) {
val animationSpec = tween<IntOffset>(400)
app/shared/src/commonMain/kotlin/ru/fromchat/ui/SystemBarsVisibility.kt
+9
View File
@@ -0,0 +1,9 @@
package ru.fromchat.ui
import androidx.compose.runtime.Composable
import androidx.compose.runtime.compositionLocalOf
val LocalSystemBarsVisibility = compositionLocalOf<((Boolean) -> Unit)?> { null }
@Composable
expect fun rememberSystemBarsController(): ((Boolean) -> Unit)?
app/shared/src/commonMain/kotlin/ru/fromchat/ui/chat/ImageFullscreenPreview.kt
+259 -36
View File
@@ -7,8 +7,7 @@ import androidx.compose.animation.core.Animatable
import androidx.compose.animation.core.tween
import androidx.compose.foundation.background
import androidx.compose.foundation.gestures.detectTapGestures
import androidx.compose.foundation.gestures.rememberTransformableState
import androidx.compose.foundation.gestures.transformable
import androidx.compose.foundation.gestures.detectTransformGestures
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.BoxWithConstraints
@@ -16,6 +15,7 @@ import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.Row
import androidx.compose.foundation.layout.Spacer
import androidx.compose.foundation.layout.WindowInsets
import androidx.compose.foundation.layout.safeDrawing
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.aspectRatio
@@ -23,6 +23,7 @@ import androidx.compose.foundation.layout.offset
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.size
import androidx.compose.foundation.layout.systemBars
import androidx.compose.foundation.layout.systemGestures
import androidx.compose.foundation.layout.width
import androidx.compose.foundation.layout.windowInsetsPadding
import androidx.compose.material.icons.Icons
@@ -38,14 +39,18 @@ import androidx.compose.material3.IconButton
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.Text
import androidx.compose.runtime.Composable
import androidx.compose.runtime.DisposableEffect
import androidx.compose.runtime.LaunchedEffect
import androidx.compose.runtime.SideEffect
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.runtime.rememberCoroutineScope
import androidx.compose.runtime.setValue
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.draw.clip
import androidx.compose.ui.draw.drawBehind
import androidx.compose.ui.geometry.Offset
import androidx.compose.ui.geometry.Rect
import androidx.compose.ui.unit.IntOffset
@@ -54,8 +59,10 @@ import androidx.compose.ui.graphics.graphicsLayer
import androidx.compose.ui.graphics.RectangleShape
import androidx.compose.ui.input.pointer.pointerInput
import androidx.compose.ui.layout.ContentScale
import androidx.compose.ui.platform.LocalDensity
import androidx.compose.ui.unit.dp
import coil3.compose.AsyncImage
import kotlinx.coroutines.Job
import kotlinx.coroutines.coroutineScope
import kotlinx.coroutines.delay
import kotlinx.coroutines.launch
@@ -63,7 +70,10 @@ import kotlinx.datetime.TimeZone
import kotlinx.datetime.toLocalDateTime
import ru.fromchat.api.Message
import ru.fromchat.ui.BackHandler
import ru.fromchat.ui.LocalSystemBarsVisibility
import kotlin.math.abs
import kotlin.math.max
import kotlin.math.min
import kotlin.math.roundToInt
import kotlin.time.ExperimentalTime
import kotlin.time.Instant
@@ -131,19 +141,33 @@ fun ImageFullscreenPreview(
var dismissRequested by remember { mutableStateOf(false) }
val backgroundAlpha = remember { Animatable(1f) }
var hasPlayedOpenAnimation by remember(thumbnailBounds) { mutableStateOf(thumbnailBounds == null) }
var isOpenAnimationPlaying by remember { mutableStateOf(false) }
var dismissProgress by remember { mutableStateOf(0f) }
val isInitialOpenState = thumbnailBounds != null && !hasPlayedOpenAnimation
val effectiveBackgroundAlpha = if (isInitialOpenState) 0f else backgroundAlpha.value
val effectiveMenusVisible = if (isInitialOpenState) false else menusVisible
val isTransitioning = isOpenAnimationPlaying || dismissRequested
val effectiveMenusVisible = if (isInitialOpenState) false else menusVisible && dismissProgress < 0.01f
var effectiveBgAlpha by remember { mutableStateOf(1f) }
BackHandler(enabled = true) {
dismissRequested = true
}
val systemBarsVisibility = LocalSystemBarsVisibility.current
LaunchedEffect(menusVisible) {
systemBarsVisibility?.invoke(menusVisible)
}
DisposableEffect(Unit) {
onDispose {
systemBarsVisibility?.invoke(true)
}
}
Box(modifier = modifier.fillMaxSize()) {
Box(
modifier = modifier
modifier = Modifier
.fillMaxSize()
.background(Color.Black.copy(alpha = effectiveBackgroundAlpha))
) {
.drawBehind { drawRect(Color.Black, alpha = effectiveBgAlpha) }
)
BoxWithConstraints(
modifier = Modifier
.fillMaxSize()
@@ -158,6 +182,11 @@ fun ImageFullscreenPreview(
when (val model = imageModel) {
null -> {
Box(
modifier = Modifier
.fillMaxSize()
.background(Color.Black)
)
LaunchedEffect(dismissRequested) {
if (dismissRequested) onDismiss()
}
@@ -187,18 +216,28 @@ fun ImageFullscreenPreview(
}
var scale by remember { mutableStateOf(initial.scale) }
var offset by remember { mutableStateOf(Offset(initial.offsetX, initial.offsetY)) }
var isDragToDismiss by remember { mutableStateOf(false) }
val scaleAnim = remember { Animatable(initial.scale) }
val offsetXAnim = remember { Animatable(initial.offsetX) }
val offsetYAnim = remember { Animatable(initial.offsetY) }
val cornerRadiusAnim = remember { Animatable(initial.cornerRadius) }
val state = rememberTransformableState { zoomChange, offsetChange, _ ->
scale = (scale * zoomChange).coerceIn(1f, 12f)
offset += offsetChange
}
val density = LocalDensity.current
val bottomInsetPx = WindowInsets.safeDrawing.getBottom(density)
val backGestureEdgeWidthPx: Float? = WindowInsets.safeDrawing
.getLeft(density, androidx.compose.ui.unit.LayoutDirection.Ltr)
.toFloat()
.takeIf { it > 0f }
var isTransformInProgress by remember { mutableStateOf(false) }
var gestureEndJob by remember { mutableStateOf<Job?>(null) }
val scope = rememberCoroutineScope()
var lastStableScale by remember { mutableStateOf(initial.scale) }
var lastStableOffsetX by remember { mutableStateOf(initial.offsetX) }
var lastStableOffsetY by remember { mutableStateOf(initial.offsetY) }
LaunchedEffect(thumbnailBounds) {
if (thumbnailBounds != null && !hasPlayedOpenAnimation) {
hasPlayedOpenAnimation = true
isOpenAnimationPlaying = true
val fullTop = (containerHeight - contentHeightAtScale1) / 2f
val fullCenter = Offset(
@@ -228,19 +267,29 @@ fun ImageFullscreenPreview(
launch { backgroundAlpha.animateTo(1f, tween(250)) }
}
isOpenAnimationPlaying = false
menusVisible = true
}
}
SideEffect {
if (!isTransformInProgress) {
lastStableScale = scaleAnim.value
lastStableOffsetX = offsetXAnim.value
lastStableOffsetY = offsetYAnim.value
}
}
LaunchedEffect(dismissRequested) {
if (!dismissRequested) return@LaunchedEffect
val hasTransform = scaleAnim.value != 1f ||
offsetXAnim.value != 0f ||
offsetYAnim.value != 0f
val hasTransform = lastStableScale != 1f ||
lastStableOffsetX != 0f ||
lastStableOffsetY != 0f
if (thumbnailBounds != null) {
menusVisible = false
val wasOpenAnimating = isOpenAnimationPlaying
isOpenAnimationPlaying = false
val fullTop = (containerHeight - contentHeightAtScale1) / 2f
val fullCenter = Offset(
@@ -253,9 +302,11 @@ fun ImageFullscreenPreview(
val targetScale = thumbWidth / containerWidth
val targetOffset = thumbCenter - fullCenter
scaleAnim.snapTo(scale)
offsetXAnim.snapTo(offset.x)
offsetYAnim.snapTo(offset.y)
if (!wasOpenAnimating) {
scaleAnim.snapTo(lastStableScale)
offsetXAnim.snapTo(lastStableOffsetX)
offsetYAnim.snapTo(lastStableOffsetY)
}
cornerRadiusAnim.snapTo(0f)
coroutineScope {
@@ -268,6 +319,9 @@ fun ImageFullscreenPreview(
} else {
if (hasTransform) {
menusVisible = false
scaleAnim.snapTo(lastStableScale)
offsetXAnim.snapTo(lastStableOffsetX)
offsetYAnim.snapTo(lastStableOffsetY)
coroutineScope {
launch { scaleAnim.animateTo(1f, tween(220)) }
launch { offsetXAnim.animateTo(0f, tween(220)) }
@@ -285,26 +339,64 @@ fun ImageFullscreenPreview(
onClosingChange(false)
onDismiss()
}
LaunchedEffect(scale, offset, state.isTransformInProgress) {
if (state.isTransformInProgress) {
LaunchedEffect(scale, offset, isTransformInProgress) {
if (isTransformInProgress) {
scaleAnim.snapTo(scale)
offsetXAnim.snapTo(offset.x)
offsetYAnim.snapTo(offset.y)
}
}
LaunchedEffect(state.isTransformInProgress) {
if (!state.isTransformInProgress) {
LaunchedEffect(isTransformInProgress) {
if (!isTransformInProgress) {
if (dismissRequested) {
return@LaunchedEffect
}
if (isDragToDismiss) {
val dragDistance = abs(offset.y)
val rawProgress = (dragDistance / (containerHeight * 0.75f)).coerceIn(0f, 1f)
if (rawProgress > 0.2f) {
// Promote drag-to-dismiss to the regular dismiss flow
isDragToDismiss = false
dismissProgress = 0f
dismissRequested = true
return@LaunchedEffect
} else {
// Cancel dismiss → snap back to center
isDragToDismiss = false
dismissProgress = 0f
scaleAnim.snapTo(scale)
offsetXAnim.snapTo(offset.x)
offsetYAnim.snapTo(offset.y)
coroutineScope {
launch { offsetYAnim.animateTo(0f, tween(220)) }
launch { backgroundAlpha.animateTo(1f, tween(220)) }
}
offset = offset.copy(y = 0f)
return@LaunchedEffect
}
}
val clampedScale = scale.coerceIn(1f, 10f)
val scaledW = containerWidth * clampedScale
val scaledH = contentHeightAtScale1 * clampedScale
val maxOffsetX = max(0f, (scaledW - containerWidth) / 2f)
val minOffsetX = -maxOffsetX
val maxOffsetY = max(0f, (scaledH - containerHeight) / 2f)
val minOffsetY = -maxOffsetY
val clampedOffset = Offset(
offset.x.coerceIn(minOffsetX, maxOffsetX),
offset.y.coerceIn(minOffsetY, maxOffsetY)
val clampedOffset = when {
scale < 1f -> Offset.Zero
scale > clampedScale -> {
val scaleRatio = clampedScale / scale
Offset(
(offset.x * scaleRatio).coerceIn(-maxOffsetX, maxOffsetX),
(offset.y * scaleRatio).coerceIn(-maxOffsetY, maxOffsetY)
)
}
else -> Offset(
offset.x.coerceIn(-maxOffsetX, maxOffsetX),
offset.y.coerceIn(-maxOffsetY, maxOffsetY)
)
}
scaleAnim.snapTo(scale)
offsetXAnim.snapTo(offset.x)
offsetYAnim.snapTo(offset.y)
@@ -313,11 +405,19 @@ fun ImageFullscreenPreview(
launch { offsetXAnim.animateTo(clampedOffset.x, tween(300)) }
launch { offsetYAnim.animateTo(clampedOffset.y, tween(300)) }
}
scale = scaleAnim.value
offset = Offset(offsetXAnim.value, offsetYAnim.value)
scale = clampedScale
offset = clampedOffset
}
}
val positionBasedProgress = if (isDragToDismiss) {
val dragY = if (isTransformInProgress) offset.y else offsetYAnim.value
val raw = (abs(dragY) / (containerHeight * 0.75f)).coerceIn(0f, 1f)
raw * raw
} else 0f
val effectiveBackgroundAlpha = (if (isInitialOpenState) 0f else backgroundAlpha.value) * (1f - positionBasedProgress)
SideEffect { effectiveBgAlpha = effectiveBackgroundAlpha }
val sharedElementModifier = if (sharedImageKey != null && sharedTransitionScope != null && animatedVisibilityScope != null) {
with(sharedTransitionScope) {
Modifier.sharedElement(
@@ -331,9 +431,134 @@ fun ImageFullscreenPreview(
Box(
modifier = Modifier
.fillMaxSize()
.transformable(state = state, lockRotationOnZoomPan = true)
.pointerInput(Unit) {
.then(
if (isTransitioning) Modifier
else Modifier.pointerInput(
containerWidth, containerHeight, contentHeightAtScale1,
bottomInsetPx, scope, backGestureEdgeWidthPx
) {
detectTransformGestures(
panZoomLock = true,
onGesture = { centroid, panChange, zoomChange, _ ->
if (dismissRequested || isTransitioning) {
return@detectTransformGestures
}
gestureEndJob?.cancel()
isTransformInProgress = true
gestureEndJob = scope.launch {
delay(150)
isTransformInProgress = false
gestureEndJob = null
}
val newScale = scale * zoomChange
val centerX = containerWidth / 2f
val centerY = containerHeight / 2f
// If this looks like a system back swipe from the left edge, ignore it
if (zoomChange == 1f && backGestureEdgeWidthPx != null) {
val absDx = abs(panChange.x)
val absDy = abs(panChange.y)
if (absDx > absDy && centroid.x < backGestureEdgeWidthPx) {
return@detectTransformGestures
}
}
if (zoomChange != 1f) {
isDragToDismiss = false
dismissProgress = 0f
scale = newScale
val pivotOffsetX = centroid.x - centerX - offset.x
val pivotOffsetY = centroid.y - centerY - offset.y
offset = Offset(
centroid.x - centerX - pivotOffsetX * zoomChange,
centroid.y - centerY - pivotOffsetY * zoomChange
)
val contentHeightAtNewScale = contentHeightAtScale1 * newScale
val scaledW = containerWidth * newScale
val maxOffsetX = max(0f, (scaledW - containerWidth) / 2f)
val maxOffsetYRaw = max(0f, (contentHeightAtNewScale - containerHeight) / 2f)
val limitedBottom = (containerHeight - bottomInsetPx) * 0.5f
val maxOffsetY = min(maxOffsetYRaw, limitedBottom)
val minOffsetY = -maxOffsetY
val edgeResistanceX = when {
offset.x >= maxOffsetX - 1f && panChange.x > 0 -> 0.3f
offset.x <= -maxOffsetX + 1f && panChange.x < 0 -> 0.3f
else -> 1f
}
val newX = (offset.x + panChange.x * edgeResistanceX).coerceIn(-maxOffsetX, maxOffsetX)
val newY = if (maxOffsetY > 0f) {
(offset.y + panChange.y).coerceIn(minOffsetY, maxOffsetY)
} else {
offset.y
}
offset = Offset(newX, newY)
} else {
val contentHeightAtCurrentScale = contentHeightAtScale1 * scale
val canScrollVertically = contentHeightAtCurrentScale > containerHeight
val absDx = abs(panChange.x)
val absDy = abs(panChange.y)
if (scale > 1f || canScrollVertically) {
isDragToDismiss = false
dismissProgress = 0f
val scaledW = containerWidth * scale
val maxOffsetX = max(0f, (scaledW - containerWidth) / 2f)
val maxOffsetYRaw = max(0f, (contentHeightAtCurrentScale - containerHeight) / 2f)
val limitedBottom = (containerHeight - bottomInsetPx) * 0.5f
val maxOffsetY = min(maxOffsetYRaw, limitedBottom)
val minOffsetY = -maxOffsetY
val edgeResistanceX = when {
offset.x >= maxOffsetX - 1f && panChange.x > 0 -> 0.3f
offset.x <= -maxOffsetX + 1f && panChange.x < 0 -> 0.3f
else -> 1f
}
val newX = (offset.x + panChange.x * edgeResistanceX).coerceIn(-maxOffsetX, maxOffsetX)
val newY = if (maxOffsetY > 0f) {
(offset.y + panChange.y).coerceIn(minOffsetY, maxOffsetY)
} else {
offset.y
}
offset = Offset(newX, newY)
} else {
if (scale >= 1f && (isDragToDismiss || absDy > absDx)) {
if (!isDragToDismiss && absDy > 0f) {
isDragToDismiss = true
menusVisible = false
}
offset = offset.copy(y = offset.y + panChange.y)
val dragDistance = abs(offset.y)
val rawProgress = (dragDistance / (containerHeight * 0.75f)).coerceIn(0f, 1f)
dismissProgress = rawProgress * rawProgress
} else {
val scaledW = containerWidth * scale
val maxOffsetX = max(0f, (scaledW - containerWidth) / 2f)
val edgeResistanceX = when {
offset.x >= maxOffsetX - 1f && panChange.x > 0 -> 0.3f
offset.x <= -maxOffsetX + 1f && panChange.x < 0 -> 0.3f
else -> 1f
}
offset = offset.copy(x = (offset.x + panChange.x * edgeResistanceX).coerceIn(-maxOffsetX, maxOffsetX))
}
}
}
}
)
}
)
.pointerInput(isTransitioning) {
if (!isTransitioning) {
detectTapGestures(onTap = { menusVisible = !menusVisible })
}
},
contentAlignment = Alignment.Center
) {
@@ -351,6 +576,8 @@ fun ImageFullscreenPreview(
.graphicsLayer {
scaleX = scaleAnim.value
scaleY = scaleAnim.value
translationX = offsetXAnim.value - offsetXAnim.value.roundToInt()
translationY = offsetYAnim.value - offsetYAnim.value.roundToInt()
val scale = maxOf(scaleAnim.value, 0.01f)
shape = androidx.compose.foundation.shape.RoundedCornerShape((cornerRadiusAnim.value / scale).dp)
clip = true
@@ -368,9 +595,7 @@ fun ImageFullscreenPreview(
visible = effectiveMenusVisible,
enter = androidx.compose.animation.fadeIn(),
exit = androidx.compose.animation.fadeOut(),
modifier = Modifier
.align(Alignment.TopStart)
.fillMaxWidth()
modifier = Modifier.align(Alignment.TopStart).fillMaxWidth()
) {
Row(
modifier = Modifier
@@ -468,9 +693,7 @@ fun ImageFullscreenPreview(
visible = effectiveMenusVisible && message.content.isNotBlank(),
enter = androidx.compose.animation.fadeIn(),
exit = androidx.compose.animation.fadeOut(),
modifier = Modifier
.align(Alignment.BottomStart)
.fillMaxWidth()
modifier = Modifier.align(Alignment.BottomStart).fillMaxWidth()
) {
if (message.content.isNotBlank()) {
Box(
app/shared/src/iosMain/kotlin/ru/fromchat/ui/SystemBarsVisibility.ios.kt
+11
View File
@@ -0,0 +1,11 @@
package ru.fromchat.ui
import androidx.compose.runtime.Composable
import androidx.compose.runtime.remember
@Composable
actual fun rememberSystemBarsController(): ((Boolean) -> Unit)? {
return remember {
{ _ -> /* iOS 13+ uses scene-based API; status bar control requires native Swift/ObjC bridge */ }
}
}
utils/shared/build.gradle.kts
-1
View File
@@ -57,7 +57,6 @@ kotlin {
implementation(libs.ktor.client.content.negotiation)
implementation(libs.ktor.client.serialization.kotlinx.json)
implementation(libs.kotlinx.datetime)
// Multiplatform settings for iOS Keychain support
implementation(libs.multiplatform.settings)
implementation(libs.multiplatform.settings.coroutines)
implementation(libs.multiplatform.settings.serialization)
utils/shared/src/iosMain/kotlin/com/pr0gramm3r101/utils/files/PlatformFileSystem.ios.kt
+2
View File
@@ -1,3 +1,5 @@
@file:OptIn(kotlinx.cinterop.ExperimentalForeignApi::class)
package com.pr0gramm3r101.utils.files
import kotlinx.cinterop.ExperimentalForeignApi