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Implement CupertinoButton along with Typography and Theming
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adapt/src/androidMain/kotlin/design/adapt/previews/cupertino/Button.kt
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adapt/src/commonMain/kotlin/design/adapt/cupertino/Button.kt
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| /* | ||
| * Copyright 2023 Shubham Singh | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
|
|
||
| package design.adapt.cupertino | ||
|
|
||
| import androidx.compose.foundation.background | ||
| import androidx.compose.foundation.gestures.detectTapGestures | ||
| import androidx.compose.foundation.isSystemInDarkTheme | ||
| import androidx.compose.foundation.layout.Arrangement | ||
| import androidx.compose.foundation.layout.Box | ||
| import androidx.compose.foundation.layout.Row | ||
| import androidx.compose.foundation.layout.defaultMinSize | ||
| import androidx.compose.foundation.layout.padding | ||
| import androidx.compose.foundation.shape.RoundedCornerShape | ||
| import androidx.compose.runtime.Composable | ||
| import androidx.compose.runtime.CompositionLocalProvider | ||
| import androidx.compose.runtime.Immutable | ||
| import androidx.compose.runtime.remember | ||
| import androidx.compose.ui.Alignment | ||
| import androidx.compose.ui.Modifier | ||
| import androidx.compose.ui.graphics.Color | ||
| import androidx.compose.ui.graphics.Shape | ||
| import androidx.compose.ui.input.pointer.pointerInput | ||
| import androidx.compose.ui.text.TextStyle | ||
| import androidx.compose.ui.unit.Dp | ||
| import androidx.compose.ui.unit.dp | ||
|
|
||
| @Composable | ||
| fun CupertinoButton( | ||
| onClick: () -> Unit, | ||
| modifier: Modifier = Modifier, | ||
| size: CupertinoButtonSize = CupertinoButtonSize.Small, | ||
| style: CupertinoButtonStyle = CupertinoButtonStyle.Borderless, | ||
| colors: CupertinoButtonColors = CupertinoButtonDefaults.buttonColors(), | ||
| shape: Shape? = null, | ||
| enabled: Boolean = true, | ||
| onMaterial: Boolean = false, | ||
| textStyle: TextStyle = CupertinoButtonDefaults.textStyle(size), | ||
| icon: (@Composable () -> Unit)? = null, | ||
| text: (@Composable () -> Unit)? = null, | ||
| ) { | ||
| val isInLightMode = !isSystemInDarkTheme() | ||
|
|
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| val isIconOnly = remember(icon, text) { icon != null && text == null } | ||
|
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| val defaultShape = remember(shape, isIconOnly, size) { | ||
| shape ?: CupertinoButtonDefaults.shape(isIconOnly = isIconOnly, size = size) | ||
| } | ||
|
|
||
| val horizontalArrangement: Dp = remember(size) { | ||
| when (size) { | ||
| CupertinoButtonSize.Small -> 3.dp | ||
| CupertinoButtonSize.Medium -> 4.dp | ||
| CupertinoButtonSize.Large -> 4.dp | ||
| } | ||
| } | ||
|
|
||
| val horizontalPadding: Dp = remember(size) { | ||
| when (size) { | ||
| CupertinoButtonSize.Small -> 10.dp | ||
| CupertinoButtonSize.Medium -> 14.dp | ||
| CupertinoButtonSize.Large -> 20.dp | ||
| } | ||
| } | ||
|
|
||
| val verticalPadding: Dp = remember(size) { | ||
| when (size) { | ||
| CupertinoButtonSize.Small -> 4.dp | ||
| CupertinoButtonSize.Medium -> 7.dp | ||
| CupertinoButtonSize.Large -> 14.dp | ||
| } | ||
| } | ||
|
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||
| val containerColor: Color = remember(style, enabled, isInLightMode, onMaterial, colors) { | ||
| when (style) { | ||
| CupertinoButtonStyle.Borderless -> { | ||
| if (enabled) colors.borderlessContainerColor | ||
| else colors.disabledBorderlessContainerColor | ||
| } | ||
|
|
||
| CupertinoButtonStyle.BezeledGray -> { | ||
| if (enabled) colors.bezeledGrayContainerColor | ||
| // The material color should only be used with light mode | ||
| else if (isInLightMode && onMaterial) colors.disabledOnMaterialBezeledGrayContainerColor | ||
| else colors.disabledBezeledGrayContainerColor | ||
| } | ||
|
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||
| CupertinoButtonStyle.Bezeled -> { | ||
| if (enabled) colors.bezeledContainerColor | ||
| // The material color should only be used with light mode | ||
| else if (isInLightMode && onMaterial) colors.disabledOnMaterialBezeledContainerColor | ||
| else colors.disabledBezeledContainerColor | ||
| } | ||
|
|
||
| CupertinoButtonStyle.Filled -> { | ||
| if (enabled) colors.filledContainerColor | ||
| // The material color should only be used with light mode | ||
| else if (isInLightMode && onMaterial) colors.disabledOnMaterialFilledContainerColor | ||
| else colors.disabledFilledContainerColor | ||
| } | ||
| } | ||
| } | ||
|
|
||
| val contentColor: Color = remember(style, enabled, isInLightMode, onMaterial, colors) { | ||
| when (style) { | ||
| CupertinoButtonStyle.Borderless -> { | ||
| if (enabled) colors.borderlessContentColor | ||
| else colors.disabledBorderlessContentColor | ||
| } | ||
|
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||
| CupertinoButtonStyle.BezeledGray -> { | ||
| if (enabled) colors.bezeledGrayContentColor | ||
| // The material color should only be used with light mode | ||
| else if (isInLightMode && onMaterial) colors.disabledOnMaterialBezeledGrayContentColor | ||
| else colors.disabledBezeledGrayContentColor | ||
| } | ||
|
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||
| CupertinoButtonStyle.Bezeled -> { | ||
| if (enabled) colors.bezeledContentColor | ||
| // The material color should only be used with light mode | ||
| else if (isInLightMode && onMaterial) colors.disabledOnMaterialBezeledContentColor | ||
| else colors.disabledBezeledContentColor | ||
| } | ||
|
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||
| CupertinoButtonStyle.Filled -> { | ||
| if (enabled) colors.filledContentColor | ||
| // The material color should only be used with light mode | ||
| else if (isInLightMode && onMaterial) colors.disabledOnMaterialFilledContentColor | ||
| else colors.disabledFilledContentColor | ||
| } | ||
| } | ||
| } | ||
|
|
||
| Row( | ||
| modifier = modifier | ||
| .pointerInput(Unit) { detectTapGestures { onClick() } } | ||
| .background(color = containerColor, shape = defaultShape) | ||
| .padding( | ||
| horizontal = if (isIconOnly) verticalPadding else horizontalPadding, | ||
| vertical = verticalPadding, | ||
| ), | ||
| horizontalArrangement = Arrangement.spacedBy(horizontalArrangement), | ||
| verticalAlignment = Alignment.CenterVertically, | ||
| ) { | ||
| icon?.let { safeIcon -> | ||
| CompositionLocalProvider(LocalContentColor provides contentColor) { | ||
| Box( | ||
| modifier = Modifier.defaultMinSize( | ||
| minWidth = CupertinoButtonDefaults.IconSize, | ||
| minHeight = CupertinoButtonDefaults.IconSize, | ||
| ), | ||
| contentAlignment = Alignment.Center, | ||
| ) { | ||
| safeIcon() | ||
| } | ||
| } | ||
| } | ||
|
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||
| text?.let { safeText -> | ||
| CompositionLocalProvider( | ||
| LocalCupertinoTextStyle provides textStyle, | ||
| LocalContentColor provides contentColor, | ||
| content = safeText, | ||
| ) | ||
| } | ||
| } | ||
| } | ||
|
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||
| @Immutable | ||
| data class CupertinoButtonColors( | ||
| val borderlessContainerColor: Color, | ||
| val borderlessContentColor: Color, | ||
| val bezeledGrayContainerColor: Color, | ||
| val bezeledGrayContentColor: Color, | ||
| val bezeledContainerColor: Color, | ||
| val bezeledContentColor: Color, | ||
| val filledContainerColor: Color, | ||
| val filledContentColor: Color, | ||
| val disabledBorderlessContainerColor: Color, | ||
| val disabledBorderlessContentColor: Color, | ||
| val disabledBezeledGrayContainerColor: Color, | ||
| val disabledBezeledGrayContentColor: Color, | ||
| val disabledBezeledContainerColor: Color, | ||
| val disabledBezeledContentColor: Color, | ||
| val disabledFilledContainerColor: Color, | ||
| val disabledFilledContentColor: Color, | ||
| val disabledOnMaterialBezeledGrayContainerColor: Color, | ||
| val disabledOnMaterialBezeledGrayContentColor: Color, | ||
| val disabledOnMaterialBezeledContainerColor: Color, | ||
| val disabledOnMaterialBezeledContentColor: Color, | ||
| val disabledOnMaterialFilledContainerColor: Color, | ||
| val disabledOnMaterialFilledContentColor: Color, | ||
| ) | ||
|
|
||
| object CupertinoButtonDefaults { | ||
| @Composable | ||
| fun buttonColors( | ||
| borderlessContainerColor: Color = Color.Transparent, | ||
| borderlessContentColor: Color = CupertinoTheme.colors.systemBlue, | ||
| bezeledGrayContainerColor: Color = CupertinoTheme.colors.fillTertiary, | ||
| bezeledGrayContentColor: Color = CupertinoTheme.colors.systemBlue, | ||
| bezeledContainerColor: Color = CupertinoTheme.colors.systemBlue.copy(alpha = 0.15f), | ||
| bezeledContentColor: Color = CupertinoTheme.colors.systemBlue, | ||
| filledContainerColor: Color = CupertinoTheme.colors.systemBlue, | ||
| filledContentColor: Color = CupertinoTheme.colors.systemWhite, | ||
| disabledBorderlessContainerColor: Color = Color.Transparent, | ||
| disabledBorderlessContentColor: Color = CupertinoTheme.colors.labelTertiary, | ||
| disabledBezeledGrayContainerColor: Color = CupertinoTheme.colors.fillTertiary, | ||
| disabledBezeledGrayContentColor: Color = CupertinoTheme.colors.labelTertiary, | ||
| disabledBezeledContainerColor: Color = CupertinoTheme.colors.fillTertiary, | ||
| disabledBezeledContentColor: Color = CupertinoTheme.colors.labelTertiary, | ||
| disabledFilledContainerColor: Color = CupertinoTheme.colors.fillTertiary, | ||
| disabledFilledContentColor: Color = CupertinoTheme.colors.labelTertiary, | ||
| disabledOnMaterialBezeledGrayContainerColor: Color = CupertinoTheme.colors.systemWhite.copy(alpha = 0.12f), | ||
| disabledOnMaterialBezeledGrayContentColor: Color = CupertinoTheme.colors.labelTertiary, | ||
| disabledOnMaterialBezeledContainerColor: Color = CupertinoTheme.colors.systemWhite.copy(alpha = 0.12f), | ||
| disabledOnMaterialBezeledContentColor: Color = CupertinoTheme.colors.labelTertiary, | ||
| disabledOnMaterialFilledContainerColor: Color = CupertinoTheme.colors.systemWhite.copy(alpha = 0.12f), | ||
| disabledOnMaterialFilledContentColor: Color = CupertinoTheme.colors.labelTertiary, | ||
| ): CupertinoButtonColors = CupertinoButtonColors( | ||
| borderlessContainerColor = borderlessContainerColor, | ||
| borderlessContentColor = borderlessContentColor, | ||
| bezeledGrayContainerColor = bezeledGrayContainerColor, | ||
| bezeledGrayContentColor = bezeledGrayContentColor, | ||
| bezeledContainerColor = bezeledContainerColor, | ||
| bezeledContentColor = bezeledContentColor, | ||
| filledContainerColor = filledContainerColor, | ||
| filledContentColor = filledContentColor, | ||
| disabledBorderlessContainerColor = disabledBorderlessContainerColor, | ||
| disabledBorderlessContentColor = disabledBorderlessContentColor, | ||
| disabledBezeledGrayContainerColor = disabledBezeledGrayContainerColor, | ||
| disabledBezeledGrayContentColor = disabledBezeledGrayContentColor, | ||
| disabledBezeledContainerColor = disabledBezeledContainerColor, | ||
| disabledBezeledContentColor = disabledBezeledContentColor, | ||
| disabledFilledContainerColor = disabledFilledContainerColor, | ||
| disabledFilledContentColor = disabledFilledContentColor, | ||
| disabledOnMaterialBezeledGrayContainerColor = disabledOnMaterialBezeledGrayContainerColor, | ||
| disabledOnMaterialBezeledGrayContentColor = disabledOnMaterialBezeledGrayContentColor, | ||
| disabledOnMaterialBezeledContainerColor = disabledOnMaterialBezeledContainerColor, | ||
| disabledOnMaterialBezeledContentColor = disabledOnMaterialBezeledContentColor, | ||
| disabledOnMaterialFilledContainerColor = disabledOnMaterialFilledContainerColor, | ||
| disabledOnMaterialFilledContentColor = disabledOnMaterialFilledContentColor, | ||
| ) | ||
|
|
||
| fun shape(isIconOnly: Boolean, size: CupertinoButtonSize): Shape = RoundedCornerShape( | ||
| when { | ||
| isIconOnly -> 400.dp | ||
| size == CupertinoButtonSize.Large -> 12.dp | ||
| else -> 40.dp | ||
| } | ||
| ) | ||
|
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||
| @Composable | ||
| fun textStyle(size: CupertinoButtonSize): TextStyle = with(LocalCupertinoTypography.current) { | ||
| when (size) { | ||
| CupertinoButtonSize.Small -> subheadlineRegular | ||
| CupertinoButtonSize.Medium -> subheadlineRegular | ||
| CupertinoButtonSize.Large -> bodyRegular | ||
| } | ||
| } | ||
|
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| val IconSize = 20.dp | ||
| } | ||
|
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| enum class CupertinoButtonSize { Small, Medium, Large } | ||
| enum class CupertinoButtonStyle { Borderless, BezeledGray, Bezeled, Filled } |
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