feat: Add a custom color theme feature

app/src/main/java/org/nsh07/pomodoro/ui/ClickableListItem.kt

@@ -0,0 +1,80 @@
+package org.nsh07.pomodoro.ui
+
+import androidx.compose.animation.core.animateDpAsState
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.interaction.MutableInteractionSource
+import androidx.compose.foundation.interaction.collectIsPressedAsState
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material3.ExperimentalMaterial3ExpressiveApi
+import androidx.compose.material3.ListItem
+import androidx.compose.material3.ListItemColors
+import androidx.compose.material3.ListItemDefaults
+import androidx.compose.material3.MaterialTheme.motionScheme
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.remember
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.clip
+import androidx.compose.ui.unit.Dp
+import androidx.compose.ui.unit.dp
+
+@OptIn(ExperimentalMaterial3ExpressiveApi::class)
+@Composable
+fun ClickableListItem(
+    headlineContent: @Composable (() -> Unit),
+    modifier: Modifier = Modifier,
+    overlineContent: @Composable (() -> Unit)? = null,
+    supportingContent: @Composable (() -> Unit)? = null,
+    leadingContent: @Composable (() -> Unit)? = null,
+    trailingContent: @Composable (() -> Unit)? = null,
+    colors: ListItemColors = ListItemDefaults.colors(),
+    tonalElevation: Dp = ListItemDefaults.Elevation,
+    shadowElevation: Dp = ListItemDefaults.Elevation,
+    items: Int,
+    index: Int,
+    onClick: () -> Unit
+) {
+    val interactionSource = remember { MutableInteractionSource() }
+    val isPressed by interactionSource.collectIsPressedAsState()
+
+    val top by animateDpAsState(
+        if (isPressed) 40.dp
+        else {
+            if (items == 1 || index == 0) 20.dp
+            else 4.dp
+        },
+        motionScheme.fastSpatialSpec()
+    )
+    val bottom by animateDpAsState(
+        if (isPressed) 40.dp
+        else {
+            if (items == 1 || index == items - 1) 20.dp
+            else 4.dp
+        },
+        motionScheme.fastSpatialSpec()
+    )
+
+    ListItem(
+        headlineContent = headlineContent,
+        modifier = modifier
+            .clip(
+                RoundedCornerShape(
+                    topStart = top,
+                    topEnd = top,
+                    bottomStart = bottom,
+                    bottomEnd = bottom
+                )
+            )
+            .clickable(
+                onClick = onClick,
+                interactionSource = interactionSource,
+            ),
+        overlineContent = overlineContent,
+        supportingContent = supportingContent,
+        leadingContent = leadingContent,
+        trailingContent = trailingContent,
+        colors = colors,
+        tonalElevation = tonalElevation,
+        shadowElevation = shadowElevation
+    )
+}

app/src/main/java/org/nsh07/pomodoro/ui/settingsScreen/ColorSchemePickerDialog.kt

@@ -0,0 +1,157 @@
+package org.nsh07.pomodoro.ui.settingsScreen
+
+import androidx.compose.animation.AnimatedContent
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.layout.wrapContentHeight
+import androidx.compose.foundation.layout.wrapContentWidth
+import androidx.compose.material3.AlertDialogDefaults
+import androidx.compose.material3.BasicAlertDialog
+import androidx.compose.material3.ButtonDefaults
+import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.ExperimentalMaterial3ExpressiveApi
+import androidx.compose.material3.Icon
+import androidx.compose.material3.IconButton
+import androidx.compose.material3.IconButtonDefaults
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.MaterialTheme.colorScheme
+import androidx.compose.material3.MaterialTheme.shapes
+import androidx.compose.material3.Surface
+import androidx.compose.material3.Text
+import androidx.compose.material3.TextButton
+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.graphics.Color
+import androidx.compose.ui.res.painterResource
+import androidx.compose.ui.tooling.preview.Preview
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.util.fastForEach
+import org.nsh07.pomodoro.R
+import org.nsh07.pomodoro.ui.theme.TomatoTheme
+
+@OptIn(ExperimentalMaterial3ExpressiveApi::class)
+@Composable
+fun ColorPickerButton(
+    color: Color,
+    isSelected: Boolean,
+    modifier: Modifier = Modifier,
+    onClick: () -> Unit
+) {
+    IconButton(
+        shapes = IconButtonDefaults.shapes(),
+        colors = IconButtonDefaults.iconButtonColors(containerColor = color),
+        modifier = modifier.size(48.dp),
+        onClick = onClick
+    ) {
+        AnimatedContent(isSelected) { isSelected ->
+            when (isSelected) {
+                true -> Icon(
+                    painterResource(R.drawable.check),
+                    tint = Color.Black,
+                    contentDescription = null
+                )
+
+                else ->
+                    if (color == Color.White) Icon(
+                        painterResource(R.drawable.colors),
+                        tint = Color.Black,
+                        contentDescription = null
+                    )
+            }
+        }
+    }
+}
+
+@OptIn(ExperimentalMaterial3Api::class, ExperimentalMaterial3ExpressiveApi::class)
+@Composable
+fun ColorSchemePickerDialog(
+    currentColor: Color,
+    modifier: Modifier = Modifier,
+    setShowDialog: (Boolean) -> Unit,
+    onColorChange: (Color) -> Unit,
+) {
+    val colorSchemes = listOf(
+        Color(0xfffeb4a7), Color(0xffffb3c0), Color(0xfffcaaff), Color(0xffb9c3ff),
+        Color(0xff62d3ff), Color(0xff44d9f1), Color(0xff52dbc9), Color(0xff78dd77),
+        Color(0xff9fd75c), Color(0xffc1d02d), Color(0xfffabd00), Color(0xffffb86e),
+        Color.White
+    )
+
+    BasicAlertDialog(
+        onDismissRequest = { setShowDialog(false) },
+        modifier = modifier
+    ) {
+        Surface(
+            modifier = Modifier
+                .wrapContentWidth()
+                .wrapContentHeight(),
+            color = colorScheme.surfaceContainer,
+            shape = shapes.extraLarge,
+            tonalElevation = AlertDialogDefaults.TonalElevation
+        ) {
+            Column(modifier = Modifier.padding(24.dp)) {
+                Text(
+                    text = "Choose color scheme",
+                    style = MaterialTheme.typography.headlineSmall
+                )
+
+                Spacer(Modifier.height(16.dp))
+
+                Column(Modifier.align(Alignment.CenterHorizontally)) {
+                    (0..11 step 4).forEach {
+                        Row {
+                            colorSchemes.slice(it..it + 3).fastForEach { color ->
+                                ColorPickerButton(
+                                    color,
+                                    color == currentColor,
+                                    modifier = Modifier.padding(4.dp)
+                                ) {
+                                    onColorChange(color)
+                                }
+                            }
+                        }
+                    }
+                    ColorPickerButton(
+                        colorSchemes.last(),
+                        colorSchemes.last() == currentColor,
+                        modifier = Modifier.padding(4.dp)
+                    ) {
+                        onColorChange(colorSchemes.last())
+                    }
+                }
+
+                Spacer(Modifier.height(24.dp))
+
+                TextButton(
+                    shapes = ButtonDefaults.shapes(),
+                    onClick = { setShowDialog(false) },
+                    modifier = Modifier.align(Alignment.End)
+                ) {
+                    Text("Ok")
+                }
+            }
+        }
+    }
+}
+
+@Preview
+@Composable
+fun ColorPickerDialogPreview() {
+    var currentColor by remember { mutableStateOf(Color(0xfffeb4a7)) }
+    TomatoTheme(darkTheme = true) {
+        ColorSchemePickerDialog(
+            currentColor,
+            setShowDialog = {},
+            onColorChange = { currentColor = it }
+        )
+    }
+}

app/src/main/java/org/nsh07/pomodoro/ui/settingsScreen/ColorSchemePickerListItem.kt

@@ -0,0 +1,64 @@
+/*
+ * Copyright (c) 2025 Nishant Mishra
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package org.nsh07.pomodoro.ui.settingsScreen
+
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.material3.Icon
+import androidx.compose.material3.MaterialTheme.colorScheme
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.saveable.rememberSaveable
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.res.painterResource
+import org.nsh07.pomodoro.R
+import org.nsh07.pomodoro.ui.ClickableListItem
+import org.nsh07.pomodoro.ui.theme.CustomColors.listItemColors
+
+@Composable
+fun ColorSchemePickerListItem(
+    color: Color,
+    items: Int,
+    index: Int,
+    onColorChange: (Color) -> Unit,
+    modifier: Modifier = Modifier
+) {
+    var showDialog by rememberSaveable { mutableStateOf(false) }
+
+    if (showDialog) {
+        ColorSchemePickerDialog(
+            currentColor = color,
+            setShowDialog = { showDialog = it },
+            onColorChange = onColorChange
+        )
+    }
+
+    ClickableListItem(
+        leadingContent = {
+            Icon(
+                painter = painterResource(R.drawable.palette),
+                contentDescription = null,
+                tint = colorScheme.primary
+            )
+        },
+        headlineContent = { Text("Color scheme") },
+        supportingContent = {
+            Text(
+                if (color == Color.White) "Dynamic"
+                else "Color"
+            )
+        },
+        colors = listItemColors,
+        items = items,
+        index = index,
+        modifier = modifier.fillMaxWidth()
+    ) { showDialog = true }
+}

app/src/main/java/org/nsh07/pomodoro/ui/settingsScreen/SettingsScreen.kt

@@ -53,6 +53,7 @@ import androidx.compose.material3.TopAppBar
 import androidx.compose.material3.TopAppBarDefaults
 import androidx.compose.material3.rememberSliderState
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
@@ -139,6 +140,7 @@ fun SettingsScreenRoot(
             }
         },
         onThemeChange = viewModel::saveTheme,
+        onColorSchemeChange = viewModel::saveColorScheme,
         modifier = modifier
     )
 }
@@ -159,6 +161,7 @@ private fun SettingsScreen(
     onBlackThemeChange: (Boolean) -> Unit,
     onAlarmSoundChanged: (Uri?) -> Unit,
     onThemeChange: (String) -> Unit,
+    onColorSchemeChange: (Color) -> Unit,
     modifier: Modifier = Modifier
 ) {
     val scrollBehavior = TopAppBarDefaults.exitUntilCollapsedScrollBehavior()
@@ -185,6 +188,12 @@ private fun SettingsScreen(
     }
 
     val context = LocalContext.current
+    var alarmName by remember { mutableStateOf("") }
+
+    LaunchedEffect(Unit) {
+        alarmName = RingtoneManager.getRingtone(context, alarmSound.toUri())
+            ?.getTitle(context) ?: ""
+    }
 
     val ringtonePickerLauncher = rememberLauncherForActivityResult(
         contract = ActivityResultContracts.StartActivityForResult()
@@ -358,25 +367,11 @@ private fun SettingsScreen(
             item { Spacer(Modifier.height(12.dp)) }
 
             item {
-                ListItem(
+                ColorSchemePickerListItem(
-                    leadingContent = {
+                    color = preferencesState.colorScheme.toColor(),
-                        Icon(
+                    items = 3,
-                            painter = painterResource(R.drawable.palette),
+                    index = 0,
-                            contentDescription = null,
+                    onColorChange = onColorSchemeChange
-                            tint = colorScheme.primary
-                        )
-                    },
-                    headlineContent = { Text("Color scheme") },
-                    supportingContent = {
-                        Text(
-                            if (preferencesState.colorScheme.toColor() == Color.White) "Dynamic"
-                            else "Color"
-                        )
-                    },
-                    colors = listItemColors,
-                    modifier = Modifier
-                        .clip(topListItemShape)
-                        .clickable(onClick = {})
                 )
             }
             item {
@@ -385,6 +380,8 @@ private fun SettingsScreen(
                     themeMap = themeMap,
                     reverseThemeMap = reverseThemeMap,
                     onThemeChange = onThemeChange,
+                    items = 3,
+                    index = 1,
                     modifier = Modifier
                         .clip(middleListItemShape)
                 )
@@ -432,14 +429,7 @@ private fun SettingsScreen(
                         Icon(painterResource(R.drawable.alarm), null)
                     },
                     headlineContent = { Text("Alarm sound") },
-                    supportingContent = {
+                    supportingContent = { Text(alarmName) },
-                        Text(
-                            remember(alarmSound) {
-                                RingtoneManager.getRingtone(context, alarmSound.toUri())
-                                    ?.getTitle(context) ?: ""
-                            }
-                        )
-                    },
                     colors = listItemColors,
                     modifier = Modifier
                         .clip(topListItemShape)
@@ -542,6 +532,7 @@ fun SettingsScreenPreview() {
             onBlackThemeChange = {},
             onAlarmSoundChanged = {},
             onThemeChange = {},
+            onColorSchemeChange = {},
             modifier = Modifier.fillMaxSize()
         )
     }

app/src/main/java/org/nsh07/pomodoro/ui/settingsScreen/ThemePickerListItem.kt

@@ -7,10 +7,8 @@
 
 package org.nsh07.pomodoro.ui.settingsScreen
 
-import androidx.compose.foundation.clickable
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.material3.Icon
-import androidx.compose.material3.ListItem
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.getValue
@@ -19,6 +17,7 @@ import androidx.compose.runtime.saveable.rememberSaveable
 import androidx.compose.runtime.setValue
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.res.painterResource
+import org.nsh07.pomodoro.ui.ClickableListItem
 import org.nsh07.pomodoro.ui.theme.CustomColors.listItemColors
 
 @Composable
@@ -26,6 +25,8 @@ fun ThemePickerListItem(
     theme: String,
     themeMap: Map<String, Pair<Int, String>>,
     reverseThemeMap: Map<String, String>,
+    items: Int,
+    index: Int,
     onThemeChange: (String) -> Unit,
     modifier: Modifier = Modifier
 ) {
@@ -41,7 +42,7 @@ fun ThemePickerListItem(
         )
     }
 
-    ListItem(
+    ClickableListItem(
         leadingContent = {
             Icon(
                 painter = painterResource(themeMap[theme]!!.first),
@@ -53,8 +54,8 @@ fun ThemePickerListItem(
             Text(themeMap[theme]!!.second)
         },
         colors = listItemColors,
-        modifier = modifier
+        items = items,
-            .fillMaxWidth()
+        index = index,
-            .clickable { showDialog = true }
+        modifier = modifier.fillMaxWidth()
-    )
+    ) { showDialog = true }
 }

app/src/main/res/drawable/colors.xml

@@ -0,0 +1,16 @@
+<!--
+  ~ Copyright (c) 2025 Nishant Mishra
+  ~
+  ~ You should have received a copy of the GNU General Public License
+  ~ along with this program.  If not, see <https://www.gnu.org/licenses/>.
+  -->
+
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="960"
+    android:viewportHeight="960">
+    <path
+        android:fillColor="#e3e3e3"
+        android:pathData="M346,820 L100,574q-10,-10 -15,-22t-5,-25q0,-13 5,-25t15,-22l230,-229 -75,-75q-13,-13 -13.5,-31t12.5,-32q13,-14 32,-14t33,14l367,367q10,10 14.5,22t4.5,25q0,13 -4.5,25T686,574L440,820q-10,10 -22,15t-25,5q-13,0 -25,-5t-22,-15ZM393,314L179,528h428L393,314ZM792,840q-36,0 -61,-25.5T706,752q0,-27 13.5,-51t30.5,-47l19,-24q9,-11 23.5,-11.5T816,629l20,25q16,23 30,47t14,51q0,37 -26,62.5T792,840Z" />
+</vector>