Node / meshtastic / Meshtastic-Android / files / feature / map / src / commonMain / kotlin / org / meshtastic / feature / map / component / LayerOpacitySlider.kt

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T8b949e/*

* Copyright (c) 2026 Meshtastic LLC

*

* This program is free software: you can redistribute it and/or modify

* it under the terms of the GNU General Public License as published by

* the Free Software Foundation, either version 3 of the License, or

* (at your option) any later version.

*

* This program is distributed in the hope that it will be useful,

* but WITHOUT ANY WARRANTY; without even the implied warranty of

* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

* GNU General Public License for more details.

*

* You should have received a copy of the GNU General Public License

* along with this program. If not, see <https://www.gnu.org/licenses/>.

*/

Tff7b72package T7ee787org.meshtastic.feature.map.component

Tff7b72import T7ee787androidx.compose.foundation.layout.Column

Tff7b72import T7ee787androidx.compose.foundation.layout.padding

Tff7b72import T7ee787androidx.compose.material3.MaterialTheme

Tff7b72import T7ee787androidx.compose.material3.Slider

Tff7b72import T7ee787androidx.compose.material3.Text

Tff7b72import T7ee787androidx.compose.runtime.Composable

Tff7b72import T7ee787androidx.compose.runtime.getValue

Tff7b72import T7ee787androidx.compose.runtime.mutableFloatStateOf

Tff7b72import T7ee787androidx.compose.runtime.remember

Tff7b72import T7ee787androidx.compose.runtime.setValue

Tff7b72import T7ee787androidx.compose.ui.Modifier

Tff7b72import T7ee787androidx.compose.ui.platform.testTag

Tff7b72import T7ee787androidx.compose.ui.unit.dp

Tff7b72import T7ee787org.jetbrains.compose.resources.stringResource

Tff7b72import T7ee787org.meshtastic.core.resources.Res

Tff7b72import T7ee787org.meshtastic.core.resources.map_layer_opacity

Tff7b72import T7ee787org.meshtastic.feature.map.layers.LAYER_OPACITY_OPAQUE

Tff7b72import T7ee787kotlin.math.roundToInt

T8b949e/** The tag a layer's opacity slider carries, so a test can find the slider for one specific layer. */

Tff7b72fun Td2a8fflayerOpacityTestTagTb4b4b4(Te6edf3keyTb4b4b4: Tffa657StringTb4b4b4)Tb4b4b4: Tffa657String Tff7b72= Ta5d6ff"Ta5d6fflayer-opacity-Tffd700$Te6edf3keyTa5d6ff"

T8b949e/**

* One layer's opacity, as a slider that reports only when the drag ends.

*

* The reporting rule is load-bearing, not a nicety: every report is a DataStore write, and a slider that reported per

* frame would write dozens of times across a single drag. [LastHeardSlider] holds its position the same way.

*

* @param layerKey identifies the layer to the caller and, as [layerOpacityTestTag], to a test. See

* [org.meshtastic.core.repository.MapPrefs.layerOpacity] for what a key is.

*/

Tf0883e@Composable

Tff7b72fun Td2a8ffLayerOpacitySliderTb4b4b4(

Te6edf3layerKeyTb4b4b4: Tffa657StringTb4b4b4,

Te6edf3opacityTb4b4b4: Tffa657FloatTb4b4b4,

Te6edf3onOpacityChangeTb4b4b4: Tb4b4b4(Tffa657StringTb4b4b4, Tffa657FloatTb4b4b4) Tff7b72-Tff7b72> Tffa657UnitTb4b4b4,

Te6edf3modifierTb4b4b4: Te6edf3Modifier Tff7b72= Te6edf3ModifierTb4b4b4,

Tb4b4b4) Tb4b4b4{

T8b949e// Keyed on the incoming value so an external change (another surface, a fresh read) is picked up, while a drag in

T8b949e// progress stays local.

Tff7b72var Te6edf3position Tff7b72by Te6edf3rememberTb4b4b4(Te6edf3opacityTb4b4b4) Tb4b4b4{ Te6edf3mutableFloatStateOfTb4b4b4(Te6edf3opacityTb4b4b4) Tb4b4b4}

Te6edf3ColumnTb4b4b4(Te6edf3modifier Tff7b72= Te6edf3modifierTb4b4b4.Te6edf3paddingTb4b4b4(Te6edf3horizontal Tff7b72= T79c0ff1T79c0ff6.Te6edf3dpTb4b4b4, Te6edf3vertical Tff7b72= T79c0ff4.Te6edf3dpTb4b4b4)Tb4b4b4) Tb4b4b4{

Te6edf3TextTb4b4b4(

Te6edf3text Tff7b72= Te6edf3stringResourceTb4b4b4(Te6edf3ResTb4b4b4.Te6edf3stringTb4b4b4.Te6edf3map_layer_opacityTb4b4b4, Tb4b4b4(Te6edf3position Tff7b72* Te6edf3PERCENTTb4b4b4)Tb4b4b4.Te6edf3roundToIntTb4b4b4(Tb4b4b4)Tb4b4b4)Tb4b4b4,

Te6edf3style Tff7b72= Te6edf3MaterialThemeTb4b4b4.Te6edf3typographyTb4b4b4.Te6edf3labelMediumTb4b4b4,

Tb4b4b4)

Te6edf3SliderTb4b4b4(

Te6edf3value Tff7b72= Te6edf3positionTb4b4b4,

Te6edf3onValueChange Tff7b72= Tb4b4b4{ Te6edf3position Tff7b72= Tffa657it Tb4b4b4}Tb4b4b4,

Te6edf3onValueChangeFinished Tff7b72= Tb4b4b4{ Te6edf3onOpacityChangeTb4b4b4(Te6edf3layerKeyTb4b4b4, Te6edf3positionTb4b4b4) Tb4b4b4}Tb4b4b4,

Te6edf3valueRange Tff7b72= T79c0ff0fTb4b4b4.Tb4b4b4.Te6edf3LAYER_OPACITY_OPAQUETb4b4b4,

Te6edf3modifier Tff7b72= Te6edf3ModifierTb4b4b4.Te6edf3testTagTb4b4b4(Te6edf3layerOpacityTestTagTb4b4b4(Te6edf3layerKeyTb4b4b4)Tb4b4b4)Tb4b4b4,

Tb4b4b4)

Tb4b4b4}

Tb4b4b4}

Tff7b72private Tff7b72const Tff7b72val Te6edf3PERCENT Tff7b72= T79c0ff1T79c0ff0T79c0ff0