| /* |
| * Copyright 2020 The Android Open Source Project |
| * |
| * 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 androidx.compose.foundation |
| |
| import androidx.compose.runtime.Composable |
| import androidx.compose.runtime.emptyContent |
| import androidx.compose.runtime.remember |
| import androidx.ui.core.Modifier |
| import androidx.ui.core.paint |
| import androidx.compose.ui.geometry.Size |
| import androidx.compose.ui.graphics.Color |
| import androidx.compose.ui.graphics.ColorFilter |
| import androidx.compose.ui.graphics.ImageAsset |
| import androidx.compose.ui.graphics.painter.ImagePainter |
| import androidx.compose.ui.graphics.painter.Painter |
| import androidx.compose.ui.graphics.vector.VectorAsset |
| import androidx.compose.ui.graphics.vector.VectorPainter |
| import androidx.compose.foundation.layout.preferredSize |
| import androidx.compose.ui.unit.dp |
| |
| /** |
| * Icon component that draws [asset] using [tint], defaulting to [contentColor]. |
| * |
| * @param asset [VectorAsset] to draw inside this Icon |
| * @param modifier optional [Modifier] for this Icon |
| * @param tint tint to be applied to [asset] |
| */ |
| @Composable |
| fun Icon( |
| asset: VectorAsset, |
| modifier: Modifier = Modifier, |
| tint: Color = contentColor() |
| ) { |
| Icon( |
| painter = VectorPainter(asset), |
| modifier = modifier, |
| tint = tint |
| ) |
| } |
| |
| /** |
| * Icon component that draws [asset] using [tint], defaulting to [contentColor]. |
| * |
| * @param asset [ImageAsset] to draw inside this Icon |
| * @param modifier optional [Modifier] for this Icon |
| * @param tint tint to be applied to [asset] |
| */ |
| @Composable |
| fun Icon( |
| asset: ImageAsset, |
| modifier: Modifier = Modifier, |
| tint: Color = contentColor() |
| ) { |
| val painter = remember(asset) { ImagePainter(asset) } |
| Icon( |
| painter = painter, |
| modifier = modifier, |
| tint = tint |
| ) |
| } |
| |
| /** |
| * Icon component that draws a [painter] using [tint], defaulting to [contentColor]. |
| * |
| * @param painter Painter to draw inside this Icon |
| * @param modifier optional [Modifier] for this Icon |
| * @param tint tint to be applied to [painter] |
| */ |
| @Composable |
| fun Icon( |
| painter: Painter, |
| modifier: Modifier = Modifier, |
| tint: Color = contentColor() |
| ) { |
| // TODO: consider allowing developers to override the intrinsic size, and specify their own |
| // size that this icon will be forced to take up. |
| // TODO: b/149735981 semantics for content description |
| Box( |
| modifier.defaultSizeFor(painter).paint(painter, colorFilter = ColorFilter.tint(tint)), |
| children = emptyContent() |
| ) |
| } |
| |
| private fun Modifier.defaultSizeFor(painter: Painter) = |
| this.then( |
| if (painter.intrinsicSize == Size.UnspecifiedSize) { |
| DefaultIconSizeModifier |
| } else { |
| Modifier |
| } |
| ) |
| |
| // Default icon size, for icons with no intrinsic size information |
| private val DefaultIconSizeModifier = Modifier.preferredSize(24.dp) |