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| This is free and unencumbered software released into the public domain. | |
| Anyone is free to copy, modify, publish, use, compile, sell, or | |
| distribute this software, either in source code form or as a compiled | |
| binary, for any purpose, commercial or non-commercial, and by any | |
| means. | |
| In jurisdictions that recognize copyright laws, the author or authors | |
| of this software dedicate any and all copyright interest in the | |
| software to the public domain. We make this dedication for the benefit | |
| of the public at large and to the detriment of our heirs and | |
| successors. We intend this dedication to be an overt act of | |
| relinquishment in perpetuity of all present and future rights to this | |
| software under copyright law. | |
| THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
| EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
| MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. | |
| IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR | |
| OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, | |
| ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR | |
| OTHER DEALINGS IN THE SOFTWARE. | |
| For more information, please refer to <https://unlicense.org> | |
| @Composable | |
| fun <T : Any> Table( | |
| items: List<T>, | |
| columns: Int, | |
| content: @Composable (T, Modifier) -> Unit, | |
| onClick: (T, Boolean) -> Unit | |
| ) { | |
| val chunked = items.chunked(columns) | |
| val remainder = items.size % columns | |
| val selected = remember { List(items.size) { mutableStateOf(false) } } | |
| Column(modifier = Modifier.fillMaxWidth()) { | |
| chunked.forEachIndexed { columnIndex, list -> | |
| Row( | |
| modifier = Modifier | |
| .fillMaxWidth() | |
| .height(IntrinsicSize.Min) | |
| .width(IntrinsicSize.Max) | |
| ) { | |
| list.forEachIndexed { rowIndex, item -> | |
| val cellIndex = (columns * columnIndex) + rowIndex | |
| val curSelected = selected[cellIndex] | |
| val isLast = curSelected == selected.last() | |
| val isCellBelow = cellIndex + columns < items.size | |
| content( | |
| item, | |
| Modifier | |
| .weight(1 / columns.toFloat()) | |
| .selectableCell( | |
| selected = curSelected.value, | |
| left = rowIndex == 0, | |
| top = columnIndex == 0, | |
| right = rowIndex == columns - 1 || isLast, | |
| bottom = !isCellBelow, | |
| onClick = { | |
| curSelected.value = !curSelected.value | |
| onClick(item, curSelected.value) | |
| } | |
| ) | |
| ) | |
| if (isLast) { | |
| Box( | |
| modifier = Modifier | |
| .weight((columns - remainder) / columns.toFloat()) | |
| ) | |
| } | |
| } | |
| } | |
| } | |
| } | |
| } | |
| fun Modifier.selectableCell( | |
| selected: Boolean, | |
| enabled: Boolean = true, | |
| role: Role? = null, | |
| left: Boolean = false, | |
| top: Boolean = false, | |
| right: Boolean = false, | |
| bottom: Boolean = false, | |
| onClick: () -> Unit | |
| ): Modifier = composed( | |
| factory = { | |
| val color = if (selected) Color.Green else Color.Red | |
| fun ContentDrawScope.drawLine(startX: Float, startY: Float, endX: Float, endY: Float) { | |
| drawLine( | |
| SolidColor(color), | |
| Offset(startX, startY), | |
| Offset(endX, endY), | |
| strokeWidth = 1.dp.toPx(), | |
| cap = StrokeCap.Square | |
| ) | |
| } | |
| selectable( | |
| selected = selected, | |
| enabled = enabled, | |
| role = role, | |
| onClick = onClick | |
| ) | |
| .graphicsLayer(clip = false) | |
| .drawWithCache { | |
| onDrawWithContent { | |
| drawContent() | |
| // Draw top | |
| drawLine(0f, 1.dp.toPx(), size.width, 1.dp.toPx()) | |
| if (top) { | |
| val leftMod = if (left) -1.dp.toPx() else 0f | |
| drawLine(leftMod, 0f, size.width, 0f) | |
| } | |
| // Draw bottom | |
| drawLine(0f, size.height, size.width, size.height) | |
| if (bottom) { | |
| val modLeft = if (left) -1.dp.toPx() else 0f | |
| drawLine(modLeft, size.height + 1.dp.toPx(), size.width, size.height + 1.dp.toPx()) | |
| } | |
| // Draw left | |
| drawLine(0f, 1.dp.toPx(), 0f, size.height) | |
| if (left) { | |
| drawLine(-1.dp.toPx(), 1.dp.toPx(), -1.dp.toPx(), size.height) | |
| } | |
| // Draw right | |
| drawLine(size.width - 1.dp.toPx(), 1.dp.toPx(), size.width -1.dp.toPx(), size.height) | |
| if (right) { | |
| drawLine(size.width, 1.dp.toPx(), size.width, size.height) | |
| } | |
| } | |
| } | |
| } | |
| ) | |
| @Preview(backgroundColor = 0xF, showBackground = true, showSystemUi = true) | |
| @Composable | |
| fun TableTest() { | |
| val items = listOf(1, 2, 3, 4, 5, 6, 7, 8) | |
| Box (modifier = Modifier.padding(4.dp)) { | |
| Table(items, 3, { item, modifier -> | |
| Text( | |
| item.toString(), | |
| modifier.height(80.dp) | |
| ) | |
| }, { item, selected -> }) | |
| } | |
| } |
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