Move app icon composables outside of mutable Fragment class.
This way, the composables do not receive an implicit mutable parameter, which allows the compiler to mark them as skippable.
This commit is contained in:
Nicholas Tinsley
Greyson Parrelli
parent
d7c06fff50
commit
131f9c4bc9
1 changed files with 226 additions and 228 deletions
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@ -87,235 +87,233 @@ class AppIconSelectionFragment : ComposeFragment() {
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findNavController().safeNavigate(R.id.action_appIconSelectionFragment_to_appIconTutorialFragment)
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}
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/**
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* Screen allowing the user to view all the possible icon and select a new one to use.
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*/
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@Composable
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fun IconSelectionScreen(activeIcon: AppIconPreset, onItemConfirmed: (AppIconPreset) -> Unit, onWarningClick: () -> Unit, modifier: Modifier = Modifier) {
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var showDialog: Boolean by remember { mutableStateOf(false) }
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var pendingIcon: AppIconPreset by remember {
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mutableStateOf(activeIcon)
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}
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if (showDialog) {
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ChangeIconDialog(
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pendingIcon = pendingIcon,
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onConfirm = {
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onItemConfirmed(pendingIcon)
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showDialog = false
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},
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onDismiss = {
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pendingIcon = activeIcon
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showDialog = false
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}
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)
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}
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Column(modifier = modifier.verticalScroll(rememberScrollState())) {
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Spacer(modifier = Modifier.size(12.dp))
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CaveatWarning(
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onClick = onWarningClick,
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modifier = Modifier.padding(horizontal = 24.dp)
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)
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Spacer(modifier = Modifier.size(12.dp))
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Column(
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modifier = Modifier
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.fillMaxWidth()
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.padding(horizontal = 18.dp),
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horizontalAlignment = Alignment.CenterHorizontally
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) {
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enumValues<AppIconPreset>().toList().chunked(COLUMN_COUNT).map { it.toImmutableList() }.forEach { items ->
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IconRow(
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presets = items,
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isSelected = { it == pendingIcon },
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onItemClick = {
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pendingIcon = it
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showDialog = true
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}
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)
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}
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}
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}
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}
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@Composable
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fun ChangeIconDialog(pendingIcon: AppIconPreset, onConfirm: () -> Unit, onDismiss: () -> Unit, modifier: Modifier = Modifier) {
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AlertDialog(
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modifier = modifier,
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onDismissRequest = onDismiss,
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confirmButton = {
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TextButton(
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onClick = onConfirm
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) {
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Text(text = stringResource(id = R.string.preferences__app_icon_dialog_ok))
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}
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},
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dismissButton = {
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TextButton(
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onClick = onDismiss
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) {
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Text(text = stringResource(id = R.string.preferences__app_icon_dialog_cancel))
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}
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},
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icon = {
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AppIcon(preset = pendingIcon, isSelected = false, onClick = {})
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},
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title = {
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Text(
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text = stringResource(id = R.string.preferences__app_icon_dialog_title, stringResource(id = pendingIcon.labelResId)),
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textAlign = TextAlign.Center,
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style = MaterialTheme.typography.headlineSmall
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)
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},
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text = {
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Text(
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text = stringResource(id = R.string.preferences__app_icon_dialog_description),
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textAlign = TextAlign.Center,
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style = MaterialTheme.typography.bodyMedium
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)
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}
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)
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}
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/**
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* Composable rendering the one row of icons that the user may choose from.
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*/
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@Composable
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fun IconRow(presets: ImmutableList<AppIconPreset>, isSelected: (AppIconPreset) -> Boolean, onItemClick: (AppIconPreset) -> Unit, modifier: Modifier = Modifier) {
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Row(modifier = modifier.fillMaxWidth()) {
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presets.forEach { preset ->
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val currentlySelected = isSelected(preset)
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IconGridElement(
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preset = preset,
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isSelected = currentlySelected,
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onClickHandler = {
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if (!currentlySelected) {
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onItemClick(preset)
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}
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},
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modifier = Modifier
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.padding(vertical = 18.dp)
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.weight(1f)
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)
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}
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}
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}
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/**
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* Composable rendering an individual icon inside that grid, including the black border of the selected icon.
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*/
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@Composable
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fun IconGridElement(preset: AppIconPreset, isSelected: Boolean, onClickHandler: () -> Unit, modifier: Modifier = Modifier) {
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Column(
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modifier = modifier,
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horizontalAlignment = Alignment.CenterHorizontally
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) {
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val boxModifier = Modifier.size(64.dp)
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Box(
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modifier = if (isSelected) boxModifier.border(3.dp, MaterialTheme.colorScheme.onBackground, CircleShape) else boxModifier
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) {
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AppIcon(preset = preset, isSelected = isSelected, onClickHandler, modifier = Modifier.align(Alignment.Center))
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}
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Spacer(modifier = Modifier.size(8.dp))
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Text(
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text = stringResource(id = preset.labelResId),
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textAlign = TextAlign.Center,
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style = MaterialTheme.typography.bodySmall,
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color = MaterialTheme.colorScheme.onSurfaceVariant
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)
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}
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}
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/**
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* Composable rendering the multiple layers of an adaptive icon onto one flattened rasterized Canvas.
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*/
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@Composable
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fun AppIcon(preset: AppIconPreset, isSelected: Boolean, onClick: () -> Unit, modifier: Modifier = Modifier) {
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val bitmapSize by animateFloatAsState(if (isSelected) 48f else 64f, label = "Icon Size")
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val imageModifier = modifier
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.size(bitmapSize.dp)
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.graphicsLayer(
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shape = CircleShape,
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shadowElevation = if (isSelected) 4f else 8f,
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clip = true
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)
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.clickable(onClick = onClick)
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Image(
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painterResource(id = preset.iconPreviewResId),
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contentDescription = stringResource(id = preset.labelResId),
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modifier = imageModifier
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)
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}
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/**
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* A clickable "learn more" block of text.
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*/
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@Composable
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fun CaveatWarning(onClick: () -> Unit, modifier: Modifier = Modifier) {
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val learnMoreString = stringResource(R.string.preferences__app_icon_learn_more)
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val completeString = stringResource(R.string.preferences__app_icon_warning_learn_more)
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val learnMoreStartIndex = completeString.indexOf(learnMoreString).coerceAtLeast(0)
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val learnMoreEndIndex = learnMoreStartIndex + learnMoreString.length
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val doesStringEndWithLearnMore = learnMoreEndIndex >= completeString.lastIndex
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val annotatedText = buildAnnotatedString {
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withStyle(
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style = SpanStyle(
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color = MaterialTheme.colorScheme.onSurfaceVariant
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)
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) {
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append(completeString.substring(0, learnMoreStartIndex))
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}
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pushStringAnnotation(
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tag = URL_TAG,
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annotation = LEARN_MORE_TAG
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)
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withStyle(
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style = SpanStyle(
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color = MaterialTheme.colorScheme.primary
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)
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) {
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append(learnMoreString)
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}
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pop()
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if (!doesStringEndWithLearnMore) {
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append(completeString.substring(learnMoreEndIndex, completeString.lastIndex))
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}
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}
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ClickableText(
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text = annotatedText,
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onClick = { _ ->
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onClick()
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},
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style = MaterialTheme.typography.bodyMedium,
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modifier = modifier
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)
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}
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@Preview(name = "Light Theme")
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@Composable
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private fun MainScreenPreviewLight() {
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SignalTheme(isDarkMode = false) {
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Surface {
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IconSelectionScreen(AppIconPreset.DEFAULT, onItemConfirmed = {}, onWarningClick = {})
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}
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}
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}
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@Preview(name = "Dark Theme")
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@Composable
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private fun MainScreenPreviewDark() {
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SignalTheme(isDarkMode = true) {
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Surface {
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IconSelectionScreen(AppIconPreset.DEFAULT, onItemConfirmed = {}, onWarningClick = {})
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}
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}
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}
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companion object {
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val TAG = Log.tag(AppIconSelectionFragment::class.java)
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private const val LEARN_MORE_TAG = "learn_more"
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private const val URL_TAG = "URL"
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private const val COLUMN_COUNT = 4
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}
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}
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private const val LEARN_MORE_TAG = "learn_more"
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private const val URL_TAG = "URL"
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private const val COLUMN_COUNT = 4
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/**
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* Screen allowing the user to view all the possible icon and select a new one to use.
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*/
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@Composable
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fun IconSelectionScreen(activeIcon: AppIconPreset, onItemConfirmed: (AppIconPreset) -> Unit, onWarningClick: () -> Unit, modifier: Modifier = Modifier) {
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var showDialog: Boolean by remember { mutableStateOf(false) }
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var pendingIcon: AppIconPreset by remember {
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mutableStateOf(activeIcon)
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}
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if (showDialog) {
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ChangeIconDialog(
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pendingIcon = pendingIcon,
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onConfirm = {
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onItemConfirmed(pendingIcon)
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showDialog = false
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},
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onDismiss = {
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pendingIcon = activeIcon
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showDialog = false
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}
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)
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}
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Column(modifier = modifier.verticalScroll(rememberScrollState())) {
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Spacer(modifier = Modifier.size(12.dp))
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CaveatWarning(
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onClick = onWarningClick,
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modifier = Modifier.padding(horizontal = 24.dp)
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)
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Spacer(modifier = Modifier.size(12.dp))
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Column(
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modifier = Modifier
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.fillMaxWidth()
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.padding(horizontal = 18.dp),
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horizontalAlignment = Alignment.CenterHorizontally
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) {
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enumValues<AppIconPreset>().toList().chunked(COLUMN_COUNT).map { it.toImmutableList() }.forEach { items ->
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IconRow(
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presets = items,
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isSelected = { it == pendingIcon },
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onItemClick = {
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pendingIcon = it
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showDialog = true
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}
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)
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}
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}
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}
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}
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@Composable
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fun ChangeIconDialog(pendingIcon: AppIconPreset, onConfirm: () -> Unit, onDismiss: () -> Unit, modifier: Modifier = Modifier) {
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AlertDialog(
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modifier = modifier,
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onDismissRequest = onDismiss,
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confirmButton = {
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TextButton(
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onClick = onConfirm
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) {
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Text(text = stringResource(id = R.string.preferences__app_icon_dialog_ok))
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}
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},
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dismissButton = {
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TextButton(
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onClick = onDismiss
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) {
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Text(text = stringResource(id = R.string.preferences__app_icon_dialog_cancel))
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}
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},
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icon = {
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AppIcon(preset = pendingIcon, isSelected = false, onClick = {})
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},
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title = {
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Text(
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text = stringResource(id = R.string.preferences__app_icon_dialog_title, stringResource(id = pendingIcon.labelResId)),
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textAlign = TextAlign.Center,
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style = MaterialTheme.typography.headlineSmall
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)
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},
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text = {
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Text(
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text = stringResource(id = R.string.preferences__app_icon_dialog_description),
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textAlign = TextAlign.Center,
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style = MaterialTheme.typography.bodyMedium
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)
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}
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)
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}
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/**
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* Composable rendering the one row of icons that the user may choose from.
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*/
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@Composable
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fun IconRow(presets: ImmutableList<AppIconPreset>, isSelected: (AppIconPreset) -> Boolean, onItemClick: (AppIconPreset) -> Unit, modifier: Modifier = Modifier) {
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Row(modifier = modifier.fillMaxWidth()) {
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presets.forEach { preset ->
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val currentlySelected = isSelected(preset)
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IconGridElement(
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preset = preset,
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isSelected = currentlySelected,
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onClickHandler = {
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if (!currentlySelected) {
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onItemClick(preset)
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}
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},
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modifier = Modifier
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.padding(vertical = 18.dp)
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.weight(1f)
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)
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}
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}
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}
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/**
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* Composable rendering an individual icon inside that grid, including the black border of the selected icon.
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*/
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@Composable
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fun IconGridElement(preset: AppIconPreset, isSelected: Boolean, onClickHandler: () -> Unit, modifier: Modifier = Modifier) {
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Column(
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modifier = modifier,
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horizontalAlignment = Alignment.CenterHorizontally
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) {
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val boxModifier = Modifier.size(64.dp)
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Box(
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modifier = if (isSelected) boxModifier.border(3.dp, MaterialTheme.colorScheme.onBackground, CircleShape) else boxModifier
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) {
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AppIcon(preset = preset, isSelected = isSelected, onClickHandler, modifier = Modifier.align(Alignment.Center))
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}
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Spacer(modifier = Modifier.size(8.dp))
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Text(
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text = stringResource(id = preset.labelResId),
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textAlign = TextAlign.Center,
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style = MaterialTheme.typography.bodySmall,
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color = MaterialTheme.colorScheme.onSurfaceVariant
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)
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}
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}
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/**
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* Composable rendering the icon and optionally a border, to indicate selection.
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*/
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@Composable
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fun AppIcon(preset: AppIconPreset, isSelected: Boolean, onClick: () -> Unit, modifier: Modifier = Modifier) {
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val bitmapSize by animateFloatAsState(if (isSelected) 48f else 64f, label = "Icon Size")
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val imageModifier = modifier
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.size(bitmapSize.dp)
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.graphicsLayer(
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shape = CircleShape,
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shadowElevation = if (isSelected) 4f else 8f,
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clip = true
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)
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.clickable(onClick = onClick)
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Image(
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painterResource(id = preset.iconPreviewResId),
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contentDescription = stringResource(id = preset.labelResId),
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modifier = imageModifier
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)
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}
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/**
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* A clickable "learn more" block of text.
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*/
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@Composable
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fun CaveatWarning(onClick: () -> Unit, modifier: Modifier = Modifier) {
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val learnMoreString = stringResource(R.string.preferences__app_icon_learn_more)
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val completeString = stringResource(R.string.preferences__app_icon_warning_learn_more)
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val learnMoreStartIndex = completeString.indexOf(learnMoreString).coerceAtLeast(0)
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val learnMoreEndIndex = learnMoreStartIndex + learnMoreString.length
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val doesStringEndWithLearnMore = learnMoreEndIndex >= completeString.lastIndex
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val annotatedText = buildAnnotatedString {
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withStyle(
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style = SpanStyle(
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color = MaterialTheme.colorScheme.onSurfaceVariant
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)
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) {
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append(completeString.substring(0, learnMoreStartIndex))
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}
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pushStringAnnotation(
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tag = URL_TAG,
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annotation = LEARN_MORE_TAG
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)
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withStyle(
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style = SpanStyle(
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color = MaterialTheme.colorScheme.primary
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)
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) {
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append(learnMoreString)
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}
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pop()
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if (!doesStringEndWithLearnMore) {
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append(completeString.substring(learnMoreEndIndex, completeString.lastIndex))
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}
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}
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ClickableText(
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text = annotatedText,
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onClick = { onClick() },
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style = MaterialTheme.typography.bodyMedium,
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modifier = modifier
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)
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}
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@Preview(name = "Light Theme")
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@Composable
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private fun MainScreenPreviewLight() {
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SignalTheme(isDarkMode = false) {
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Surface {
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IconSelectionScreen(AppIconPreset.DEFAULT, onItemConfirmed = {}, onWarningClick = {})
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}
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}
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}
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@Preview(name = "Dark Theme")
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@Composable
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private fun MainScreenPreviewDark() {
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SignalTheme(isDarkMode = true) {
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Surface {
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IconSelectionScreen(AppIconPreset.DEFAULT, onItemConfirmed = {}, onWarningClick = {})
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}
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}
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}
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