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.../draganddrop/src/main/java/com/example/platform/ui/draganddrop/DragAndDropUsingCompose.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,182 @@ | ||
| /* | ||
| * Copyright 2023 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 | ||
| * | ||
| * https://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 com.example.platform.ui.draganddrop | ||
|
|
||
| import android.content.ClipData | ||
| import android.content.ClipDescription | ||
| import androidx.compose.foundation.ExperimentalFoundationApi | ||
| import androidx.compose.foundation.background | ||
| import androidx.compose.foundation.draganddrop.dragAndDropSource | ||
| import androidx.compose.foundation.draganddrop.dragAndDropTarget | ||
| import androidx.compose.foundation.gestures.detectTapGestures | ||
| import androidx.compose.foundation.layout.Arrangement | ||
| import androidx.compose.foundation.layout.Box | ||
| import androidx.compose.foundation.layout.Column | ||
| import androidx.compose.foundation.layout.fillMaxSize | ||
| import androidx.compose.foundation.layout.fillMaxWidth | ||
| import androidx.compose.foundation.layout.padding | ||
| import androidx.compose.foundation.layout.size | ||
| import androidx.compose.foundation.lazy.grid.GridCells | ||
| import androidx.compose.foundation.lazy.grid.LazyVerticalGrid | ||
| import androidx.compose.material3.HorizontalDivider | ||
| import androidx.compose.runtime.Composable | ||
| import androidx.compose.runtime.getValue | ||
| import androidx.compose.runtime.mutableStateListOf | ||
| import androidx.compose.runtime.mutableStateOf | ||
| import androidx.compose.runtime.remember | ||
| import androidx.compose.runtime.setValue | ||
| import androidx.compose.ui.Modifier | ||
| import androidx.compose.ui.draganddrop.DragAndDropEvent | ||
| import androidx.compose.ui.draganddrop.DragAndDropTarget | ||
| import androidx.compose.ui.draganddrop.DragAndDropTransferData | ||
| import androidx.compose.ui.draganddrop.mimeTypes | ||
| import androidx.compose.ui.draganddrop.toAndroidDragEvent | ||
| import androidx.compose.ui.graphics.Color | ||
| import androidx.compose.ui.unit.dp | ||
| import com.bumptech.glide.integration.compose.ExperimentalGlideComposeApi | ||
| import com.bumptech.glide.integration.compose.GlideImage | ||
| import com.google.android.catalog.framework.annotations.Sample | ||
|
|
||
| @Sample( | ||
| name = "Drag and Drop in Compose", | ||
| description = "Drag and drop in Compose", | ||
| documentation = "", | ||
| ) | ||
| @Composable | ||
| fun DragAndDropCompose() { | ||
| Column( | ||
| modifier = Modifier | ||
| .fillMaxSize() | ||
| .padding(8.dp), | ||
| ) { | ||
| DragBox(Modifier.weight(1f)) | ||
| HorizontalDivider() | ||
| DropBox(Modifier.weight(2f)) | ||
| } | ||
| } | ||
|
|
||
| @OptIn(ExperimentalFoundationApi::class) | ||
| @Composable | ||
| fun DropBox(modifier: Modifier) { | ||
| val targetPhotoUrls = remember { | ||
| mutableStateListOf<String>() | ||
| } | ||
| var backgroundColor by remember { | ||
| mutableStateOf(Color(0xffE5E4E2)) | ||
| } | ||
| val dragAndDropTarget = remember { | ||
| object : DragAndDropTarget { | ||
| override fun onDrop(event: DragAndDropEvent): Boolean { | ||
| val data = event.toAndroidDragEvent().clipData.getItemAt(0).text | ||
| targetPhotoUrls.add(data.toString()) | ||
| return true | ||
| } | ||
|
|
||
| override fun onEntered(event: DragAndDropEvent) { | ||
| super.onEntered(event) | ||
| backgroundColor = Color(0xffD3D3D3) | ||
| } | ||
|
|
||
| override fun onEnded(event: DragAndDropEvent) { | ||
| super.onExited(event) | ||
| backgroundColor = Color(0xffE5E4E2) | ||
| } | ||
|
|
||
| override fun onExited(event: DragAndDropEvent) { | ||
| super.onExited(event) | ||
| backgroundColor = Color(0xffE5E4E2) | ||
| } | ||
| } | ||
| } | ||
| Box( | ||
| modifier = modifier | ||
| .fillMaxWidth() | ||
| .padding(8.dp) | ||
| .background(color = backgroundColor) | ||
| .dragAndDropTarget( | ||
| shouldStartDragAndDrop = { event -> | ||
| event | ||
| .mimeTypes() | ||
| .contains(ClipDescription.MIMETYPE_TEXT_PLAIN) | ||
| }, | ||
| target = dragAndDropTarget, | ||
| ), | ||
| ) { | ||
| LazyVerticalGrid( | ||
| columns = GridCells.Adaptive(minSize = 100.dp), | ||
| verticalArrangement = Arrangement.spacedBy(10.dp), | ||
| horizontalArrangement = Arrangement.spacedBy(10.dp), | ||
| ) { | ||
| items(targetPhotoUrls.size) { index -> | ||
| Photo(targetPhotoUrls[index]) | ||
| } | ||
|
|
||
| } | ||
| } | ||
| } | ||
|
|
||
| @Composable | ||
| fun DragBox(modifier: Modifier) { | ||
| Box( | ||
| modifier = modifier.fillMaxWidth(), | ||
| ) { | ||
| val sourcePhotoUrls = remember { | ||
| mutableStateListOf( | ||
| "https://services.google.com/fh/files/misc/qq10.jpeg", | ||
| "https://services.google.com/fh/files/misc/qq9.jpeg", | ||
| "https://services.google.com/fh/files/misc/qq8.jpeg", | ||
| ) | ||
| } | ||
| LazyVerticalGrid( | ||
| columns = GridCells.Adaptive(minSize = 100.dp), | ||
| verticalArrangement = Arrangement.spacedBy(10.dp), | ||
| horizontalArrangement = Arrangement.spacedBy(10.dp), | ||
| ) { | ||
| items(sourcePhotoUrls.size) { index -> | ||
| Photo(sourcePhotoUrls[index]) | ||
| } | ||
|
|
||
| } | ||
| } | ||
| } | ||
|
|
||
| @OptIn(ExperimentalGlideComposeApi::class, ExperimentalFoundationApi::class) | ||
| @Composable | ||
| fun Photo(urlStr: String) { | ||
| val url by remember { | ||
| mutableStateOf(urlStr) | ||
| } | ||
| GlideImage( | ||
| model = url, | ||
| contentDescription = "demo", | ||
| modifier = Modifier | ||
| .size(100.dp) | ||
| .dragAndDropSource { | ||
| detectTapGestures( | ||
| onLongPress = { | ||
| startTransfer( | ||
| DragAndDropTransferData( | ||
| ClipData.newPlainText( | ||
| "image Url", url, | ||
| ), | ||
| ), | ||
| ) | ||
| }, | ||
| ) | ||
| }, | ||
| ) | ||
| } |
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