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core/designsystem/src/main/java/com/moya/funch/modifier/VerticalScrollbar.kt
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package com.moya.funch.modifier | ||
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||
import androidx.compose.animation.core.AnimationSpec | ||
import androidx.compose.animation.core.animateFloatAsState | ||
import androidx.compose.animation.core.tween | ||
import androidx.compose.foundation.ScrollState | ||
import androidx.compose.foundation.gestures.FlingBehavior | ||
import androidx.compose.foundation.layout.PaddingValues | ||
import androidx.compose.foundation.layout.calculateEndPadding | ||
import androidx.compose.foundation.layout.calculateStartPadding | ||
import androidx.compose.foundation.verticalScroll | ||
import androidx.compose.runtime.Immutable | ||
import androidx.compose.runtime.getValue | ||
import androidx.compose.ui.Modifier | ||
import androidx.compose.ui.composed | ||
import androidx.compose.ui.draw.drawWithContent | ||
import androidx.compose.ui.geometry.CornerRadius | ||
import androidx.compose.ui.geometry.Offset | ||
import androidx.compose.ui.geometry.Size | ||
import androidx.compose.ui.graphics.Color | ||
import androidx.compose.ui.unit.Dp | ||
import androidx.compose.ui.unit.LayoutDirection | ||
import androidx.compose.ui.unit.dp | ||
import kotlin.math.max | ||
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/** | ||
* @see <a href="https://stackoverflow.com/questions/75035946/how-to-add-scrollbars-to-column">스크롤바 레퍼런스</a> | ||
*/ | ||
@Immutable | ||
data class ScrollBarConfig( | ||
val indicatorHeight: Dp = 39.dp, | ||
val indicatorThickness: Dp = 8.dp, | ||
val indicatorColor: Color = Color.LightGray, | ||
val alpha: Float? = null, | ||
val alphaAnimationSpec: AnimationSpec<Float>? = null, | ||
val padding: PaddingValues = PaddingValues(all = 0.dp) | ||
) | ||
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fun Modifier.scrollbar( | ||
state: ScrollState, | ||
indicatorHeight: Dp = 39.dp, | ||
indicatorThickness: Dp = 8.dp, | ||
indicatorColor: Color = Color.LightGray, | ||
alpha: Float = if (state.isScrollInProgress) 0.8f else 0f, | ||
alphaAnimationSpec: AnimationSpec<Float> = tween( | ||
delayMillis = if (state.isScrollInProgress) 0 else 1500, | ||
durationMillis = if (state.isScrollInProgress) 150 else 500 | ||
), | ||
padding: PaddingValues = PaddingValues(all = 0.dp) | ||
): Modifier = composed { | ||
val scrollbarAlpha by animateFloatAsState( | ||
targetValue = alpha, | ||
animationSpec = alphaAnimationSpec, | ||
label = "" | ||
) | ||
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drawWithContent { | ||
drawContent() | ||
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val showScrollBar = state.isScrollInProgress || scrollbarAlpha > 0.0f | ||
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if (showScrollBar) { | ||
val (topPadding, bottomPadding, startPadding, endPadding) = listOf( | ||
padding.calculateTopPadding().toPx(), | ||
padding.calculateBottomPadding().toPx(), | ||
padding.calculateStartPadding(layoutDirection).toPx(), | ||
padding.calculateEndPadding(layoutDirection).toPx() | ||
) | ||
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val viewPortLength = size.height | ||
val viewPortCrossAxisLength = size.width | ||
val contentLength = max(viewPortLength + state.maxValue, 0.001f) | ||
val indicatorThicknessPx = indicatorThickness.toPx() | ||
val scrollbarSizeWithoutInsets = Size(indicatorThicknessPx, indicatorHeight.toPx()) | ||
val maxScrollOffset = viewPortLength - scrollbarSizeWithoutInsets.height - topPadding - bottomPadding | ||
val scrollOffsetViewPort = | ||
if (contentLength > viewPortLength) { | ||
topPadding + (state.value / (contentLength - viewPortLength)) * maxScrollOffset | ||
} else { | ||
topPadding | ||
} | ||
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drawRoundRect( | ||
color = indicatorColor, | ||
cornerRadius = CornerRadius( | ||
x = indicatorThicknessPx / 2, | ||
y = indicatorThicknessPx / 2 | ||
), | ||
topLeft = Offset( | ||
x = if (layoutDirection == LayoutDirection.Ltr) { | ||
viewPortCrossAxisLength - indicatorThicknessPx - endPadding | ||
} else { | ||
startPadding | ||
}, | ||
y = scrollOffsetViewPort | ||
), | ||
size = scrollbarSizeWithoutInsets, | ||
alpha = scrollbarAlpha | ||
) | ||
} | ||
} | ||
} | ||
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fun Modifier.verticalScrollWithScrollbar( | ||
state: ScrollState, | ||
enabled: Boolean = true, | ||
flingBehavior: FlingBehavior? = null, | ||
reverseScrolling: Boolean = false, | ||
scrollbarConfig: ScrollBarConfig = ScrollBarConfig() | ||
) = this | ||
.scrollbar( | ||
state = state, | ||
indicatorHeight = scrollbarConfig.indicatorHeight, | ||
indicatorThickness = scrollbarConfig.indicatorThickness, | ||
indicatorColor = scrollbarConfig.indicatorColor, | ||
alpha = scrollbarConfig.alpha ?: if (state.isScrollInProgress) 0.8f else 0f, | ||
alphaAnimationSpec = scrollbarConfig.alphaAnimationSpec ?: tween( | ||
delayMillis = if (state.isScrollInProgress) 0 else 1500, | ||
durationMillis = if (state.isScrollInProgress) 150 else 500 | ||
), | ||
padding = scrollbarConfig.padding | ||
) | ||
.verticalScroll(state, enabled, flingBehavior, reverseScrolling) |
266 changes: 266 additions & 0 deletions
266
core/designsystem/src/main/java/com/moya/funch/ui/FunchDropDown.kt
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package com.moya.funch.ui | ||
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||
import androidx.compose.foundation.Indication | ||
import androidx.compose.foundation.LocalIndication | ||
import androidx.compose.foundation.ScrollState | ||
import androidx.compose.foundation.background | ||
import androidx.compose.foundation.border | ||
import androidx.compose.foundation.clickable | ||
import androidx.compose.foundation.interaction.MutableInteractionSource | ||
import androidx.compose.foundation.interaction.collectIsPressedAsState | ||
import androidx.compose.foundation.layout.Arrangement | ||
import androidx.compose.foundation.layout.Box | ||
import androidx.compose.foundation.layout.Column | ||
import androidx.compose.foundation.layout.PaddingValues | ||
import androidx.compose.foundation.layout.Row | ||
import androidx.compose.foundation.layout.fillMaxSize | ||
import androidx.compose.foundation.layout.fillMaxWidth | ||
import androidx.compose.foundation.layout.height | ||
import androidx.compose.foundation.layout.padding | ||
import androidx.compose.foundation.layout.width | ||
import androidx.compose.foundation.rememberScrollState | ||
import androidx.compose.material3.Divider | ||
import androidx.compose.material3.Icon | ||
import androidx.compose.material3.Surface | ||
import androidx.compose.material3.Text | ||
import androidx.compose.runtime.Composable | ||
import androidx.compose.runtime.getValue | ||
import androidx.compose.runtime.mutableStateOf | ||
import androidx.compose.runtime.remember | ||
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.geometry.Rect | ||
import androidx.compose.ui.layout.boundsInWindow | ||
import androidx.compose.ui.layout.onGloballyPositioned | ||
import androidx.compose.ui.platform.LocalDensity | ||
import androidx.compose.ui.res.painterResource | ||
import androidx.compose.ui.tooling.preview.Preview | ||
import androidx.compose.ui.unit.IntOffset | ||
import androidx.compose.ui.unit.dp | ||
import androidx.compose.ui.unit.sp | ||
import androidx.compose.ui.window.Popup | ||
import com.moya.funch.icon.FunchIconAsset | ||
import com.moya.funch.modifier.ScrollBarConfig | ||
import com.moya.funch.modifier.verticalScrollWithScrollbar | ||
import com.moya.funch.theme.FunchTheme | ||
import com.moya.funch.theme.Gray300 | ||
import com.moya.funch.theme.Gray500 | ||
import com.moya.funch.theme.Gray800 | ||
import com.moya.funch.theme.LocalBackgroundTheme | ||
import com.moya.funch.theme.White | ||
import kotlin.math.roundToInt | ||
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@Composable | ||
fun FunchDropDownButton( | ||
modifier: Modifier = Modifier, | ||
placeHolder: String, | ||
onClick: () -> Unit, | ||
isDropDownMenuExpanded: Boolean, | ||
indication: Indication? = LocalIndication.current, | ||
interactionSource: MutableInteractionSource = remember { MutableInteractionSource() } | ||
) { | ||
Row( | ||
modifier = modifier | ||
.fillMaxWidth() | ||
.height(56.dp) | ||
.background( | ||
color = Gray800, | ||
shape = FunchTheme.shapes.medium | ||
) | ||
.then( | ||
if (isDropDownMenuExpanded) { | ||
Modifier.border( | ||
width = 1.dp, | ||
color = White, | ||
shape = FunchTheme.shapes.medium | ||
) | ||
} else { | ||
Modifier | ||
} | ||
) | ||
.clickable( | ||
onClick = onClick, | ||
indication = indication, | ||
interactionSource = interactionSource | ||
) | ||
.padding( | ||
top = 8.dp, | ||
bottom = 8.dp, | ||
start = 16.dp, | ||
end = 8.dp | ||
), | ||
verticalAlignment = Alignment.CenterVertically, | ||
horizontalArrangement = Arrangement.SpaceBetween | ||
) { | ||
Text( | ||
text = placeHolder, | ||
style = FunchTheme.typography.b, | ||
color = White | ||
) | ||
Icon( | ||
modifier = Modifier.padding(8.dp), | ||
painter = painterResource( | ||
id = if (isDropDownMenuExpanded) { | ||
FunchIconAsset.Arrow.arrow_up_24 | ||
} else { | ||
FunchIconAsset.Arrow.arrow_down_24 | ||
} | ||
), | ||
contentDescription = "", | ||
tint = White | ||
) | ||
} | ||
} | ||
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@Composable | ||
fun FunchDropDownMenu( | ||
modifier: Modifier = Modifier, | ||
items: List<String>, | ||
buttonBounds: Rect, | ||
onItemSelected: (String) -> Unit, | ||
scrollState: ScrollState = rememberScrollState() | ||
) { | ||
Popup( | ||
alignment = Alignment.TopStart, | ||
offset = IntOffset( | ||
x = 0, | ||
y = with(LocalDensity.current) { | ||
(buttonBounds.height).toInt() + 8.dp.toPx().roundToInt() | ||
} | ||
) | ||
) { | ||
Column( | ||
modifier = modifier | ||
.width(with(LocalDensity.current) { buttonBounds.width.toDp() }) | ||
.height(144.dp) | ||
.background( | ||
color = Gray800, | ||
shape = FunchTheme.shapes.medium | ||
) | ||
.clip(FunchTheme.shapes.medium) | ||
.verticalScrollWithScrollbar( | ||
state = scrollState, | ||
scrollbarConfig = ScrollBarConfig( | ||
indicatorHeight = 39.dp, | ||
indicatorThickness = 4.dp, | ||
indicatorColor = Gray300, | ||
padding = PaddingValues( | ||
top = 16.dp, | ||
bottom = 16.dp, | ||
end = 4.dp | ||
) | ||
) | ||
) | ||
) { | ||
items.forEachIndexed { index, option -> | ||
val interactionSource = remember { MutableInteractionSource() } | ||
val isPressed by interactionSource.collectIsPressedAsState() | ||
FunchDropDownItem( | ||
option = option, | ||
onItemSelected = { onItemSelected(option) }, | ||
isPressed = isPressed, | ||
interactionSource = interactionSource | ||
) | ||
if (index < items.lastIndex) { | ||
Divider( | ||
color = Gray500, | ||
thickness = 0.5f.dp | ||
) | ||
} | ||
} | ||
} | ||
} | ||
} | ||
|
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@Composable | ||
fun FunchDropDownItem( | ||
option: String, | ||
onItemSelected: (String) -> Unit, | ||
isPressed: Boolean, | ||
interactionSource: MutableInteractionSource | ||
) { | ||
Row( | ||
modifier = Modifier | ||
.fillMaxWidth() | ||
.background(color = if (isPressed) Gray500 else Gray800) | ||
.clickable( | ||
onClick = { onItemSelected(option) }, | ||
interactionSource = interactionSource, | ||
indication = null | ||
) | ||
.padding( | ||
start = 16.dp, | ||
end = 8.dp, | ||
top = 13.5f.dp, | ||
bottom = 13.5f.dp | ||
) | ||
) { | ||
Text( | ||
text = option, | ||
color = White, | ||
style = FunchTheme.typography.b | ||
) | ||
} | ||
} | ||
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@Preview( | ||
showBackground = true, | ||
widthDp = 360, | ||
heightDp = 640 | ||
) | ||
@Composable | ||
private fun Preview1() { | ||
FunchTheme { | ||
val backgroundColor = LocalBackgroundTheme.current.color | ||
|
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Surface( | ||
modifier = Modifier.fillMaxSize(), | ||
color = backgroundColor | ||
) { | ||
Column( | ||
modifier = Modifier | ||
.fillMaxSize() | ||
.padding(16.dp) | ||
) { | ||
val bloodTypes = listOf("A형", "B형", "O형", "AB형") | ||
var placeHolder by remember { mutableStateOf(bloodTypes[0]) } | ||
var isDropDownMenuExpanded by remember { mutableStateOf(true) } | ||
val buttonBounds = remember { mutableStateOf(Rect.Zero) } | ||
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Text( | ||
text = "Hello, World!", | ||
fontSize = 50.sp, | ||
color = White | ||
) | ||
Box { | ||
FunchDropDownButton( | ||
placeHolder = placeHolder, | ||
onClick = { isDropDownMenuExpanded = !isDropDownMenuExpanded }, | ||
isDropDownMenuExpanded = isDropDownMenuExpanded, | ||
indication = null, | ||
modifier = Modifier.onGloballyPositioned { coordinates -> | ||
buttonBounds.value = coordinates.boundsInWindow() | ||
} | ||
) | ||
if (isDropDownMenuExpanded) { | ||
FunchDropDownMenu( | ||
items = bloodTypes, | ||
buttonBounds = buttonBounds.value, | ||
onItemSelected = { text -> | ||
placeHolder = text | ||
isDropDownMenuExpanded = false | ||
} | ||
) | ||
} | ||
} | ||
Text( | ||
text = "Hello, World!", | ||
fontSize = 50.sp, | ||
color = White | ||
) | ||
} | ||
} | ||
} | ||
} |
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