| /* |
| * 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.samples |
| |
| import androidx.annotation.Sampled |
| import androidx.compose.Composable |
| import androidx.compose.remember |
| import androidx.ui.core.Modifier |
| import androidx.compose.foundation.Image |
| import androidx.ui.geometry.Offset |
| import androidx.ui.graphics.Canvas |
| import androidx.ui.graphics.Color |
| import androidx.ui.graphics.ColorFilter |
| import androidx.ui.graphics.ImageAsset |
| import androidx.ui.graphics.Paint |
| import androidx.ui.core.ContentScale |
| import androidx.ui.geometry.Size |
| import androidx.ui.graphics.painter.ImagePainter |
| import androidx.ui.graphics.painter.Painter |
| import androidx.ui.graphics.drawscope.DrawScope |
| import androidx.compose.foundation.layout.preferredSize |
| import androidx.ui.res.loadVectorResource |
| import androidx.ui.unit.IntOffset |
| import androidx.ui.unit.IntSize |
| import androidx.ui.unit.dp |
| |
| @Sampled |
| @Composable |
| fun ImageSample() { |
| val imageAsset = createTestImage() |
| // Lays out and draws an image sized to the dimensions of the ImageAsset |
| Image(asset = imageAsset) |
| } |
| |
| @Sampled |
| @Composable |
| fun ImagePainterSubsectionSample() { |
| val imageAsset = createTestImage() |
| // Lays out and draws an image sized to the rectangular subsection of the ImageAsset |
| Image( |
| painter = ImagePainter( |
| imageAsset, |
| IntOffset(10, 12), |
| IntSize(50, 60) |
| ) |
| ) |
| } |
| |
| @Sampled |
| @Composable |
| fun ImageVectorAssetSample() { |
| val vectorAsset = loadVectorResource(R.drawable.ic_sample_vector) |
| vectorAsset.resource.resource?.let { |
| Image( |
| asset = it, |
| modifier = Modifier.preferredSize(200.dp, 200.dp), |
| contentScale = ContentScale.Fit, |
| colorFilter = ColorFilter.tint(Color.Cyan) |
| ) |
| } |
| } |
| |
| @Sampled |
| @Composable |
| fun ImagePainterSample() { |
| val customPainter = remember { |
| object : Painter() { |
| |
| override val intrinsicSize: Size |
| get() = Size(100.0f, 100.0f) |
| |
| override fun DrawScope.onDraw() { |
| drawRect(color = Color.Cyan) |
| } |
| } |
| } |
| |
| Image(painter = customPainter, modifier = Modifier.preferredSize(100.dp, 100.dp)) |
| } |
| |
| /** |
| * Helper method to create an ImageAsset with some content in it |
| */ |
| private fun createTestImage(): ImageAsset { |
| val imageAsset = ImageAsset(100, 100) |
| Canvas(imageAsset).drawCircle( |
| Offset(50.0f, 50.0f), 50.0f, |
| Paint().apply { this.color = Color.Cyan } |
| ) |
| return imageAsset |
| } |