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| 1 | +package info.appdev.chartexample.compose |
| 2 | + |
| 3 | +import android.graphics.Color |
| 4 | +import android.os.Bundle |
| 5 | +import androidx.activity.compose.setContent |
| 6 | +import androidx.compose.foundation.background |
| 7 | +import androidx.compose.foundation.layout.Box |
| 8 | +import androidx.compose.foundation.layout.Column |
| 9 | +import androidx.compose.foundation.layout.Row |
| 10 | +import androidx.compose.foundation.layout.fillMaxSize |
| 11 | +import androidx.compose.foundation.layout.fillMaxWidth |
| 12 | +import androidx.compose.foundation.layout.padding |
| 13 | +import androidx.compose.material.icons.Icons |
| 14 | +import androidx.compose.material.icons.filled.MoreVert |
| 15 | +import androidx.compose.material3.DropdownMenu |
| 16 | +import androidx.compose.material3.DropdownMenuItem |
| 17 | +import androidx.compose.material3.ExperimentalMaterial3Api |
| 18 | +import androidx.compose.material3.Icon |
| 19 | +import androidx.compose.material3.IconButton |
| 20 | +import androidx.compose.material3.MaterialTheme |
| 21 | +import androidx.compose.material3.Scaffold |
| 22 | +import androidx.compose.material3.Slider |
| 23 | +import androidx.compose.material3.Text |
| 24 | +import androidx.compose.material3.TopAppBar |
| 25 | +import androidx.compose.material3.TopAppBarDefaults |
| 26 | +import androidx.compose.runtime.Composable |
| 27 | +import androidx.compose.runtime.getValue |
| 28 | +import androidx.compose.runtime.mutableFloatStateOf |
| 29 | +import androidx.compose.runtime.mutableStateOf |
| 30 | +import androidx.compose.runtime.remember |
| 31 | +import androidx.compose.runtime.setValue |
| 32 | +import androidx.compose.ui.Alignment |
| 33 | +import androidx.compose.ui.Modifier |
| 34 | +import androidx.compose.ui.platform.testTag |
| 35 | +import androidx.compose.ui.unit.dp |
| 36 | +import info.appdev.chartexample.notimportant.DemoBaseCompose |
| 37 | +import info.appdev.charting.compose.GanttChart |
| 38 | +import info.appdev.charting.data.GanttChartData |
| 39 | +import info.appdev.charting.data.GanttTask |
| 40 | + |
| 41 | +/** |
| 42 | + * Demo activity showing Gantt-style timeline visualization using Compose. |
| 43 | + */ |
| 44 | +class TimeIntervalComposeActivity : DemoBaseCompose() { |
| 45 | + |
| 46 | + // Full list of sample tasks |
| 47 | + private val allTasks = listOf( |
| 48 | + GanttTask("Design", 0f, 50f, Color.rgb(255, 107, 107)), |
| 49 | + GanttTask("Dev", 40f, 100f, Color.rgb(66, 165, 245)), |
| 50 | + GanttTask("Testing", 120f, 40f, Color.rgb(76, 175, 80), hatched = true), |
| 51 | + GanttTask("Launch", 150f, 20f, Color.rgb(255, 193, 7)), |
| 52 | + ) |
| 53 | + |
| 54 | + override fun onCreate(savedInstanceState: Bundle?) { |
| 55 | + super.onCreate(savedInstanceState) |
| 56 | + setContent { |
| 57 | + MaterialTheme { |
| 58 | + GanttChartScreen(onViewGithub = { viewGithub() }) |
| 59 | + } |
| 60 | + } |
| 61 | + } |
| 62 | + |
| 63 | + @OptIn(ExperimentalMaterial3Api::class) |
| 64 | + @Composable |
| 65 | + fun GanttChartScreen(onViewGithub: () -> Unit) { |
| 66 | + var showMenu by remember { mutableStateOf(false) } |
| 67 | + // X: controls visible max time (range 50–300) |
| 68 | + var seekBarXValue by remember { mutableFloatStateOf(190f) } |
| 69 | + // Y: controls how many tasks are shown (1–allTasks.size) |
| 70 | + var seekBarYValue by remember { mutableFloatStateOf(allTasks.size.toFloat()) } |
| 71 | + |
| 72 | + Scaffold( |
| 73 | + topBar = { |
| 74 | + TopAppBar( |
| 75 | + title = { Text("TimeIntervalChart") }, |
| 76 | + colors = TopAppBarDefaults.topAppBarColors( |
| 77 | + containerColor = MaterialTheme.colorScheme.primary, |
| 78 | + titleContentColor = MaterialTheme.colorScheme.onPrimary |
| 79 | + ), |
| 80 | + actions = { |
| 81 | + Box { |
| 82 | + IconButton( |
| 83 | + onClick = { showMenu = true }, |
| 84 | + modifier = Modifier.testTag("menuButton") |
| 85 | + ) { |
| 86 | + Icon( |
| 87 | + Icons.Default.MoreVert, |
| 88 | + contentDescription = "Menu", |
| 89 | + tint = MaterialTheme.colorScheme.onPrimary |
| 90 | + ) |
| 91 | + } |
| 92 | + DropdownMenu( |
| 93 | + expanded = showMenu, |
| 94 | + onDismissRequest = { showMenu = false }, |
| 95 | + modifier = Modifier.testTag("dropdownMenu") |
| 96 | + ) { |
| 97 | + DropdownMenuItem( |
| 98 | + text = { Text("View on GitHub") }, |
| 99 | + onClick = { showMenu = false; onViewGithub() }, |
| 100 | + modifier = Modifier.testTag("menuItem_View on GitHub") |
| 101 | + ) |
| 102 | + } |
| 103 | + } |
| 104 | + } |
| 105 | + ) |
| 106 | + } |
| 107 | + ) { paddingValues -> |
| 108 | + Column( |
| 109 | + modifier = Modifier |
| 110 | + .fillMaxSize() |
| 111 | + .padding(paddingValues) |
| 112 | + .background(androidx.compose.ui.graphics.Color.White) |
| 113 | + ) { |
| 114 | + val ganttData = remember(seekBarXValue, seekBarYValue) { |
| 115 | + val maxTime = seekBarXValue |
| 116 | + val taskCount = seekBarYValue.toInt().coerceAtLeast(1) |
| 117 | + GanttChartData().apply { |
| 118 | + allTasks.take(taskCount).forEach { addTask(it) } |
| 119 | + minTime = 0f |
| 120 | + this.maxTime = maxTime |
| 121 | + } |
| 122 | + } |
| 123 | + |
| 124 | + GanttChart( |
| 125 | + data = ganttData, |
| 126 | + modifier = Modifier |
| 127 | + .fillMaxWidth() |
| 128 | + .weight(1f) |
| 129 | + ) |
| 130 | + |
| 131 | + // SeekBar X – controls visible time range |
| 132 | + Row( |
| 133 | + modifier = Modifier |
| 134 | + .fillMaxWidth() |
| 135 | + .padding(horizontal = 16.dp, vertical = 8.dp), |
| 136 | + verticalAlignment = Alignment.CenterVertically |
| 137 | + ) { |
| 138 | + Text( |
| 139 | + text = "X:", |
| 140 | + modifier = Modifier.padding(end = 8.dp), |
| 141 | + style = MaterialTheme.typography.bodyMedium |
| 142 | + ) |
| 143 | + Slider( |
| 144 | + value = seekBarXValue, |
| 145 | + onValueChange = { seekBarXValue = it }, |
| 146 | + valueRange = 1f..200f, |
| 147 | + modifier = Modifier.weight(1f) |
| 148 | + ) |
| 149 | + Text( |
| 150 | + text = seekBarXValue.toInt().toString(), |
| 151 | + modifier = Modifier.padding(start = 8.dp), |
| 152 | + style = MaterialTheme.typography.bodyMedium |
| 153 | + ) |
| 154 | + } |
| 155 | + |
| 156 | + // SeekBar Y – controls number of tasks shown |
| 157 | + Row( |
| 158 | + modifier = Modifier |
| 159 | + .fillMaxWidth() |
| 160 | + .padding(horizontal = 16.dp, vertical = 8.dp), |
| 161 | + verticalAlignment = Alignment.CenterVertically |
| 162 | + ) { |
| 163 | + Text( |
| 164 | + text = "Y:", |
| 165 | + modifier = Modifier.padding(end = 8.dp), |
| 166 | + style = MaterialTheme.typography.bodyMedium |
| 167 | + ) |
| 168 | + Slider( |
| 169 | + value = seekBarYValue, |
| 170 | + onValueChange = { seekBarYValue = it }, |
| 171 | + valueRange = 1f..allTasks.size.toFloat(), |
| 172 | + steps = allTasks.size - 2, |
| 173 | + modifier = Modifier.weight(1f) |
| 174 | + ) |
| 175 | + Text( |
| 176 | + text = seekBarYValue.toInt().toString(), |
| 177 | + modifier = Modifier.padding(start = 8.dp), |
| 178 | + style = MaterialTheme.typography.bodyMedium |
| 179 | + ) |
| 180 | + } |
| 181 | + } |
| 182 | + } |
| 183 | + } |
| 184 | +} |
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