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Added ability to select particular PDF pages for export by text, or r…
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.../ru/tech/imageresizershrinker/feature/pdf_tools/presentation/components/PageInputField.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,95 @@ | ||
| /* | ||
| * ImageToolbox is an image editor for android | ||
| * Copyright (c) 2025 T8RIN (Malik Mukhametzyanov) | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * | ||
| * 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. | ||
| * | ||
| * You should have received a copy of the Apache License | ||
| * along with this program. If not, see <http://www.apache.org/licenses/LICENSE-2.0>. | ||
| */ | ||
|
|
||
| package ru.tech.imageresizershrinker.feature.pdf_tools.presentation.components | ||
|
|
||
| import androidx.compose.foundation.layout.padding | ||
| import androidx.compose.foundation.shape.RoundedCornerShape | ||
| import androidx.compose.material3.LocalTextStyle | ||
| import androidx.compose.runtime.Composable | ||
| import androidx.compose.runtime.getValue | ||
| import androidx.compose.runtime.mutableStateOf | ||
| import androidx.compose.runtime.remember | ||
| import androidx.compose.runtime.setValue | ||
| import androidx.compose.ui.Modifier | ||
| import androidx.compose.ui.res.stringResource | ||
| import androidx.compose.ui.text.style.TextAlign | ||
| import androidx.compose.ui.unit.dp | ||
| import ru.tech.imageresizershrinker.core.resources.R | ||
| import ru.tech.imageresizershrinker.core.ui.widget.modifier.container | ||
| import ru.tech.imageresizershrinker.core.ui.widget.text.RoundedTextField | ||
|
|
||
| @Composable | ||
| internal fun PageInputField( | ||
| selectedPages: List<Int>, | ||
| onPagesChanged: (List<Int>) -> Unit | ||
| ) { | ||
| var text by remember { | ||
| mutableStateOf(formatPageOutput(selectedPages)) | ||
| } | ||
|
|
||
| RoundedTextField( | ||
| value = text, | ||
| onValueChange = { | ||
| text = it | ||
| val parsedPages = parsePageInput(it) | ||
| onPagesChanged(parsedPages) | ||
| }, | ||
| textStyle = LocalTextStyle.current.copy( | ||
| textAlign = TextAlign.Start | ||
| ), | ||
| label = stringResource(R.string.custom_pages), | ||
| modifier = Modifier | ||
| .container( | ||
| resultPadding = 0.dp, | ||
| shape = RoundedCornerShape(20.dp) | ||
| ) | ||
| .padding(8.dp), | ||
| singleLine = false | ||
| ) | ||
| } | ||
|
|
||
| internal fun parsePageInput(input: String): List<Int> { | ||
| val pages = mutableSetOf<Int>() | ||
| val regex = "\\d+(-\\d+)?".toRegex() | ||
| regex.findAll(input).forEach { match -> | ||
| val rangeParts = match.value.split("-").mapNotNull { it.toIntOrNull() } | ||
| when (rangeParts.size) { | ||
| 1 -> pages.add(rangeParts[0] - 1) | ||
| 2 -> if (rangeParts[0] <= rangeParts[1]) { | ||
| pages.addAll((rangeParts[0] - 1)..(rangeParts[1] - 1)) | ||
| } | ||
| } | ||
| } | ||
| return pages.sorted() | ||
| } | ||
|
|
||
| internal fun formatPageOutput(pages: List<Int>): String { | ||
| if (pages.isEmpty()) return "" | ||
| val result = mutableListOf<String>() | ||
| var start = pages[0] | ||
| var prev = pages[0] | ||
| for (i in 1 until pages.size) { | ||
| if (pages[i] != prev + 1) { | ||
| result.add(if (start == prev) "${start + 1}" else "${start + 1}-${prev + 1}") | ||
| start = pages[i] | ||
| } | ||
| prev = pages[i] | ||
| } | ||
| result.add(if (start == prev) "${start + 1}" else "${start + 1}-${prev + 1}") | ||
| return result.joinToString(", ") | ||
| } |
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