mirror of
https://github.com/HChaZZY/PiliPlus.git
synced 2025-12-21 09:37:02 +08:00
bggRGjQaUbCoE
117
lib/common/widgets/image/image_save.dart
Normal file
117
lib/common/widgets/image/image_save.dart
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@@ -0,0 +1,117 @@
|
||||
import 'dart:math';
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||||
|
||||
import 'package:PiliPlus/common/constants.dart';
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import 'package:PiliPlus/common/widgets/button/icon_button.dart';
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import 'package:PiliPlus/common/widgets/image/network_img_layer.dart';
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import 'package:PiliPlus/utils/download.dart';
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||||
import 'package:flutter/material.dart';
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import 'package:flutter_smart_dialog/flutter_smart_dialog.dart';
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import 'package:get/get.dart';
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void imageSaveDialog({
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required String? title,
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required String? cover,
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}) {
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final double imgWidth = min(Get.width, Get.height) - 8 * 2;
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SmartDialog.show(
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animationType: SmartAnimationType.centerScale_otherSlide,
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builder: (context) {
|
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final theme = Theme.of(context);
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return Container(
|
||||
width: imgWidth,
|
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margin: const EdgeInsets.symmetric(horizontal: StyleString.safeSpace),
|
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decoration: BoxDecoration(
|
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color: theme.colorScheme.surface,
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||||
borderRadius: BorderRadius.circular(10.0),
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),
|
||||
child: Column(
|
||||
mainAxisSize: MainAxisSize.min,
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||||
children: [
|
||||
Stack(
|
||||
clipBehavior: Clip.none,
|
||||
children: [
|
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GestureDetector(
|
||||
onTap: SmartDialog.dismiss,
|
||||
child: NetworkImgLayer(
|
||||
width: imgWidth,
|
||||
height: imgWidth / StyleString.aspectRatio,
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src: cover,
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quality: 100,
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),
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),
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Positioned(
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right: 8,
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||||
top: 8,
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||||
child: Container(
|
||||
width: 30,
|
||||
height: 30,
|
||||
decoration: BoxDecoration(
|
||||
color: Colors.black.withOpacity(0.3),
|
||||
shape: BoxShape.circle,
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||||
),
|
||||
child: IconButton(
|
||||
style: ButtonStyle(
|
||||
padding: WidgetStateProperty.all(EdgeInsets.zero),
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),
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onPressed: SmartDialog.dismiss,
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icon: const Icon(
|
||||
Icons.close,
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size: 18,
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||||
color: Colors.white,
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),
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||||
),
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),
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),
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],
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),
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Padding(
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padding: const EdgeInsets.fromLTRB(12, 10, 8, 10),
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||||
child: Row(
|
||||
children: [
|
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Expanded(
|
||||
child: SelectableText(
|
||||
title ?? '',
|
||||
style: theme.textTheme.titleSmall,
|
||||
),
|
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),
|
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if (cover?.isNotEmpty == true) ...[
|
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const SizedBox(width: 4),
|
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iconButton(
|
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context: context,
|
||||
tooltip: '分享',
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onPressed: () {
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SmartDialog.dismiss();
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||||
DownloadUtils.onShareImg(cover!);
|
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},
|
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iconSize: 20,
|
||||
icon: Icons.share,
|
||||
bgColor: Colors.transparent,
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iconColor: theme.colorScheme.onSurfaceVariant,
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||||
),
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iconButton(
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context: context,
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tooltip: '保存封面图',
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onPressed: () async {
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bool saveStatus = await DownloadUtils.downloadImg(
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context,
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[cover!],
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);
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if (saveStatus) {
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SmartDialog.dismiss();
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}
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},
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iconSize: 20,
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icon: Icons.download,
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bgColor: Colors.transparent,
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iconColor: theme.colorScheme.onSurfaceVariant,
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),
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],
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],
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),
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),
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],
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),
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);
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},
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);
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}
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195
lib/common/widgets/image/image_view.dart
Normal file
195
lib/common/widgets/image/image_view.dart
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@@ -0,0 +1,195 @@
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import 'dart:math';
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import 'package:PiliPlus/common/constants.dart';
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import 'package:PiliPlus/common/widgets/badge.dart';
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import 'package:PiliPlus/common/widgets/interactiveviewer_gallery/interactiveviewer_gallery.dart'
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show SourceModel, SourceType;
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import 'package:PiliPlus/common/widgets/image/network_img_layer.dart';
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import 'package:PiliPlus/common/widgets/image/nine_grid_view.dart';
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import 'package:PiliPlus/utils/extension.dart';
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import 'package:PiliPlus/utils/storage.dart';
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import 'package:flutter/material.dart';
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class ImageModel {
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ImageModel({
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required this.width,
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required this.height,
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required this.url,
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this.liveUrl,
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});
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dynamic width;
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||||
dynamic height;
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String url;
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String? liveUrl;
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bool? _isLongPic;
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bool? _isLivePhoto;
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dynamic get safeWidth => width ?? 1;
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dynamic get safeHeight => height ?? 1;
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bool get isLongPic => _isLongPic ??= (safeHeight / safeWidth) > (22 / 9);
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bool get isLivePhoto => _isLivePhoto ??= liveUrl?.isNotEmpty == true;
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}
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Widget imageView(
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double maxWidth,
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List<ImageModel> picArr, {
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||||
VoidCallback? onViewImage,
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ValueChanged<int>? onDismissed,
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Function(List<String>, int)? callback,
|
||||
}) {
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double imageWidth = (maxWidth - 2 * 5) / 3;
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double imageHeight = imageWidth;
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if (picArr.length == 1) {
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dynamic width = picArr[0].safeWidth;
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dynamic height = picArr[0].safeHeight;
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double ratioWH = width / height;
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double ratioHW = height / width;
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double maxRatio = 22 / 9;
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imageWidth = ratioWH > 1.5
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? maxWidth
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: (ratioWH >= 1 || (height > width && ratioHW < 1.5))
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? 2 * imageWidth
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: 1.5 * imageWidth;
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imageHeight = imageWidth * min(ratioHW, maxRatio);
|
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} else if (picArr.length == 2) {
|
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imageWidth = imageHeight = 2 * imageWidth;
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}
|
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BorderRadius borderRadius(index) {
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if (picArr.length == 1) {
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return StyleString.mdRadius;
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}
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final int row = picArr.length == 4 ? 2 : 3;
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return BorderRadius.only(
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topLeft: Radius.circular(
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(index - row >= 0 ||
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((index - 1) >= 0 && (index - 1) % row < index % row))
|
||||
? 0
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: 10,
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),
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topRight: Radius.circular(
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(index - row >= 0 ||
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((index + 1) < picArr.length &&
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(index + 1) % row > index % row))
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? 0
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: 10,
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),
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bottomLeft: Radius.circular(
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(index + row < picArr.length ||
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((index - 1) >= 0 && (index - 1) % row < index % row))
|
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? 0
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: 10,
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),
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bottomRight: Radius.circular(
|
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(index + row < picArr.length ||
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((index + 1) < picArr.length &&
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||||
(index + 1) % row > index % row))
|
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? 0
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: 10,
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),
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);
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}
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late final enableLivePhoto = GStorage.enableLivePhoto;
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int parseSize(size) {
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return switch (size) {
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int() => size,
|
||||
double() => size.round(),
|
||||
String() => int.tryParse(size) ?? 1,
|
||||
_ => 1,
|
||||
};
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||||
}
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||||
return NineGridView(
|
||||
type: NineGridType.weiBo,
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||||
margin: const EdgeInsets.only(top: 6),
|
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bigImageWidth: imageWidth,
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bigImageHeight: imageHeight,
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||||
space: 5,
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||||
height: picArr.length == 1 ? imageHeight : null,
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||||
width: picArr.length == 1 ? imageWidth : maxWidth,
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itemCount: picArr.length,
|
||||
itemBuilder: (context, index) => Hero(
|
||||
tag: picArr[index].url,
|
||||
child: GestureDetector(
|
||||
onTap: () {
|
||||
if (callback != null) {
|
||||
callback(picArr.map((item) => item.url).toList(), index);
|
||||
} else {
|
||||
onViewImage?.call();
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context.imageView(
|
||||
initialPage: index,
|
||||
imgList: picArr.map(
|
||||
(item) {
|
||||
bool isLive = item.isLivePhoto && enableLivePhoto;
|
||||
return SourceModel(
|
||||
sourceType:
|
||||
isLive ? SourceType.livePhoto : SourceType.networkImage,
|
||||
url: item.url,
|
||||
liveUrl: isLive ? item.liveUrl : null,
|
||||
width: isLive ? parseSize(item.width) : null,
|
||||
height: isLive ? parseSize(item.height) : null,
|
||||
);
|
||||
},
|
||||
).toList(),
|
||||
onDismissed: onDismissed,
|
||||
);
|
||||
}
|
||||
},
|
||||
child: Stack(
|
||||
clipBehavior: Clip.none,
|
||||
alignment: Alignment.center,
|
||||
children: [
|
||||
ClipRRect(
|
||||
borderRadius: borderRadius(index),
|
||||
child: NetworkImgLayer(
|
||||
radius: 0,
|
||||
src: picArr[index].url,
|
||||
width: imageWidth,
|
||||
height: imageHeight,
|
||||
isLongPic: () => picArr[index].isLongPic,
|
||||
callback: () =>
|
||||
picArr[index].safeWidth <= picArr[index].safeHeight,
|
||||
getPlaceHolder: () {
|
||||
return Container(
|
||||
width: imageWidth,
|
||||
height: imageHeight,
|
||||
decoration: BoxDecoration(
|
||||
color: Theme.of(context)
|
||||
.colorScheme
|
||||
.onInverseSurface
|
||||
.withOpacity(0.4),
|
||||
borderRadius: borderRadius(index),
|
||||
),
|
||||
child: Center(
|
||||
child: Image.asset(
|
||||
'assets/images/loading.png',
|
||||
width: imageWidth,
|
||||
height: imageHeight,
|
||||
cacheWidth: imageWidth.cacheSize(context),
|
||||
),
|
||||
),
|
||||
);
|
||||
},
|
||||
),
|
||||
),
|
||||
if (picArr[index].isLivePhoto)
|
||||
const PBadge(
|
||||
text: 'Live',
|
||||
right: 8,
|
||||
bottom: 8,
|
||||
type: 'gray',
|
||||
)
|
||||
else if (picArr[index].isLongPic)
|
||||
const PBadge(
|
||||
text: '长图',
|
||||
right: 8,
|
||||
bottom: 8,
|
||||
),
|
||||
],
|
||||
),
|
||||
),
|
||||
),
|
||||
);
|
||||
}
|
||||
111
lib/common/widgets/image/network_img_layer.dart
Normal file
111
lib/common/widgets/image/network_img_layer.dart
Normal file
@@ -0,0 +1,111 @@
|
||||
import 'package:PiliPlus/common/constants.dart';
|
||||
import 'package:PiliPlus/utils/utils.dart';
|
||||
import 'package:cached_network_image/cached_network_image.dart';
|
||||
import 'package:flutter/material.dart';
|
||||
import 'package:PiliPlus/utils/extension.dart';
|
||||
|
||||
class NetworkImgLayer extends StatelessWidget {
|
||||
const NetworkImgLayer({
|
||||
super.key,
|
||||
this.src,
|
||||
required this.width,
|
||||
this.height,
|
||||
this.type,
|
||||
this.fadeOutDuration,
|
||||
this.fadeInDuration,
|
||||
// 图片质量 默认1%
|
||||
this.quality,
|
||||
this.semanticsLabel,
|
||||
this.radius,
|
||||
this.imageBuilder,
|
||||
this.isLongPic,
|
||||
this.callback,
|
||||
this.getPlaceHolder,
|
||||
this.boxFit,
|
||||
});
|
||||
|
||||
final String? src;
|
||||
final double width;
|
||||
final double? height;
|
||||
final String? type;
|
||||
final Duration? fadeOutDuration;
|
||||
final Duration? fadeInDuration;
|
||||
final int? quality;
|
||||
final String? semanticsLabel;
|
||||
final double? radius;
|
||||
final ImageWidgetBuilder? imageBuilder;
|
||||
final Function? isLongPic;
|
||||
final Function? callback;
|
||||
final Function? getPlaceHolder;
|
||||
final BoxFit? boxFit;
|
||||
|
||||
@override
|
||||
Widget build(BuildContext context) {
|
||||
return src.isNullOrEmpty.not
|
||||
? type == 'avatar'
|
||||
? ClipOval(child: _buildImage(context))
|
||||
: radius == 0 || type == 'emote'
|
||||
? _buildImage(context)
|
||||
: ClipRRect(
|
||||
borderRadius: BorderRadius.circular(
|
||||
radius ?? StyleString.imgRadius.x,
|
||||
),
|
||||
child: _buildImage(context),
|
||||
)
|
||||
: getPlaceHolder?.call() ?? placeholder(context);
|
||||
}
|
||||
|
||||
Widget _buildImage(context) {
|
||||
int? memCacheWidth, memCacheHeight;
|
||||
if (height == null || callback?.call() == true || width <= height!) {
|
||||
memCacheWidth = width.cacheSize(context);
|
||||
} else {
|
||||
memCacheHeight = height.cacheSize(context);
|
||||
}
|
||||
return CachedNetworkImage(
|
||||
imageUrl: Utils.thumbnailImgUrl(src, quality),
|
||||
width: width,
|
||||
height: height,
|
||||
memCacheWidth: memCacheWidth,
|
||||
memCacheHeight: memCacheHeight,
|
||||
fit: boxFit ?? BoxFit.cover,
|
||||
alignment:
|
||||
isLongPic?.call() == true ? Alignment.topCenter : Alignment.center,
|
||||
fadeOutDuration: fadeOutDuration ?? const Duration(milliseconds: 120),
|
||||
fadeInDuration: fadeInDuration ?? const Duration(milliseconds: 120),
|
||||
filterQuality: FilterQuality.low,
|
||||
placeholder: (BuildContext context, String url) =>
|
||||
getPlaceHolder?.call() ?? placeholder(context),
|
||||
imageBuilder: imageBuilder,
|
||||
);
|
||||
}
|
||||
|
||||
Widget placeholder(BuildContext context) {
|
||||
return Container(
|
||||
width: width,
|
||||
height: height,
|
||||
clipBehavior: Clip.antiAlias,
|
||||
decoration: BoxDecoration(
|
||||
shape: type == 'avatar' ? BoxShape.circle : BoxShape.rectangle,
|
||||
color: Theme.of(context).colorScheme.onInverseSurface.withOpacity(0.4),
|
||||
borderRadius: type == 'avatar' || type == 'emote' || radius == 0
|
||||
? null
|
||||
: BorderRadius.circular(
|
||||
radius ?? StyleString.imgRadius.x,
|
||||
),
|
||||
),
|
||||
child: type == 'bg'
|
||||
? const SizedBox.shrink()
|
||||
: Center(
|
||||
child: Image.asset(
|
||||
type == 'avatar'
|
||||
? 'assets/images/noface.jpeg'
|
||||
: 'assets/images/loading.png',
|
||||
width: width,
|
||||
height: height,
|
||||
cacheWidth: width.cacheSize(context),
|
||||
),
|
||||
),
|
||||
);
|
||||
}
|
||||
}
|
||||
566
lib/common/widgets/image/nine_grid_view.dart
Normal file
566
lib/common/widgets/image/nine_grid_view.dart
Normal file
@@ -0,0 +1,566 @@
|
||||
import 'package:flutter/material.dart';
|
||||
|
||||
import 'dart:async';
|
||||
import 'dart:collection';
|
||||
import 'dart:math' as math;
|
||||
|
||||
/**
|
||||
* @Author: Sky24n
|
||||
* @GitHub: https://github.com/Sky24n
|
||||
* @Description: NineGridView.
|
||||
* @Date: 2020/06/16
|
||||
*/
|
||||
|
||||
/// NineGridView Type.
|
||||
enum NineGridType {
|
||||
/// normal NineGridView.
|
||||
normal,
|
||||
|
||||
/// like WeChat NineGridView.
|
||||
weChat,
|
||||
|
||||
/// like WeiBo International NineGridView.
|
||||
weiBo,
|
||||
|
||||
/// like WeChat group.
|
||||
weChatGp,
|
||||
|
||||
/// like DingTalk group.
|
||||
dingTalkGp,
|
||||
|
||||
/// like QQ group.
|
||||
qqGp,
|
||||
}
|
||||
|
||||
/// big images size cache map.
|
||||
Map<String, Rect> ngvBigImageSizeMap = HashMap();
|
||||
|
||||
/// NineGridView.
|
||||
/// like WeChat, WeiBo International, WeChat group, DingTalk group, QQ group.
|
||||
///
|
||||
/// Another [NineGridView](https://github.com/flutterchina/flukit) in [flukit](https://github.com/flutterchina/flukit) UI Kit，using GridView implementation。
|
||||
class NineGridView extends StatefulWidget {
|
||||
/// create NineGridView.
|
||||
/// If you want to show a single big picture.
|
||||
/// It is recommended to use a medium-quality picture, because the original picture is too large and takes time to load.
|
||||
/// 单张大图建议使用中等质量图片，因为原图太大加载耗时。
|
||||
/// you need input (bigImageWidth + bigImageHeight) or (bigImage + bigImageUrl).
|
||||
const NineGridView({
|
||||
super.key,
|
||||
this.width,
|
||||
this.height,
|
||||
this.space = 3,
|
||||
this.arcAngle = 0,
|
||||
this.initIndex = 1,
|
||||
this.padding = EdgeInsets.zero,
|
||||
this.margin = EdgeInsets.zero,
|
||||
this.alignment,
|
||||
this.color,
|
||||
this.decoration,
|
||||
this.type = NineGridType.weChat,
|
||||
required this.itemCount,
|
||||
required this.itemBuilder,
|
||||
this.bigImageWidth,
|
||||
this.bigImageHeight,
|
||||
this.bigImage,
|
||||
this.bigImageUrl,
|
||||
});
|
||||
|
||||
/// View width.
|
||||
final double? width;
|
||||
|
||||
/// View height.
|
||||
final double? height;
|
||||
|
||||
/// The number of logical pixels between each child.
|
||||
final double space;
|
||||
|
||||
/// QQ group arc angle (0 ~ 180).
|
||||
final double arcAngle;
|
||||
|
||||
/// QQ group init index (0 or 1). def 1.
|
||||
final int initIndex;
|
||||
|
||||
/// View padding.
|
||||
final EdgeInsets padding;
|
||||
|
||||
/// View margin.
|
||||
final EdgeInsets margin;
|
||||
|
||||
/// Align the [child] within the container.
|
||||
final AlignmentGeometry? alignment;
|
||||
|
||||
/// The color to paint behind the [child].
|
||||
final Color? color;
|
||||
|
||||
/// The decoration to paint behind the [child].
|
||||
final Decoration? decoration;
|
||||
|
||||
/// NineGridView type.
|
||||
final NineGridType type;
|
||||
|
||||
/// The total number of children this delegate can provide.
|
||||
final int itemCount;
|
||||
|
||||
/// Called to build children for the view.
|
||||
final IndexedWidgetBuilder itemBuilder;
|
||||
|
||||
/// Single big picture width.
|
||||
final double? bigImageWidth;
|
||||
|
||||
/// Single big picture height.
|
||||
final double? bigImageHeight;
|
||||
|
||||
/// It is recommended to use a medium-quality picture, because the original picture is too large and takes time to load.
|
||||
/// 单张大图建议使用中等质量图片，因为原图太大加载耗时。
|
||||
/// Single big picture Image.
|
||||
final Image? bigImage;
|
||||
|
||||
/// Single big picture url.
|
||||
final String? bigImageUrl;
|
||||
|
||||
@override
|
||||
State<StatefulWidget> createState() {
|
||||
return _NineGridViewState();
|
||||
}
|
||||
}
|
||||
|
||||
/// _NineGridViewState.
|
||||
class _NineGridViewState extends State<NineGridView> {
|
||||
/// init view size.
|
||||
Rect _initSize(BuildContext context) {
|
||||
EdgeInsets padding = widget.padding;
|
||||
if (widget.itemCount == 0) {
|
||||
return Rect.fromLTRB(0, 0, padding.horizontal, padding.vertical);
|
||||
}
|
||||
double width = widget.width ??
|
||||
(MediaQuery.of(context).size.width - widget.margin.horizontal);
|
||||
width = width - padding.horizontal;
|
||||
double space = widget.space;
|
||||
double itemW;
|
||||
if (widget.type == NineGridType.weiBo &&
|
||||
(widget.itemCount == 1 || widget.itemCount == 2)) {
|
||||
// || itemCount == 4
|
||||
itemW = (width - space) / 2;
|
||||
} else {
|
||||
itemW = (width - space * 2) / 3;
|
||||
}
|
||||
bool fourGrid =
|
||||
(widget.itemCount == 4 && widget.type != NineGridType.normal);
|
||||
int column = fourGrid ? 2 : math.min(3, widget.itemCount);
|
||||
int row = fourGrid ? 2 : (widget.itemCount / 3).ceil();
|
||||
double realWidth =
|
||||
itemW * column + space * (column - 1) + padding.horizontal;
|
||||
double realHeight = itemW * row + space * (row - 1) + padding.vertical;
|
||||
return Rect.fromLTRB(itemW, 0, realWidth, realHeight);
|
||||
}
|
||||
|
||||
/// build nine grid view.
|
||||
Widget _buildChild(BuildContext context, double itemW) {
|
||||
double space = widget.space;
|
||||
int column =
|
||||
(widget.itemCount == 4 && widget.type != NineGridType.normal) ? 2 : 3;
|
||||
List<Widget> list = [];
|
||||
for (int i = 0; i < widget.itemCount; i++) {
|
||||
list.add(Positioned(
|
||||
top: (space + itemW) * (i ~/ column),
|
||||
left: (space + itemW) * (i % column),
|
||||
child: SizedBox(
|
||||
width: itemW,
|
||||
height: itemW,
|
||||
child: widget.itemBuilder(context, i),
|
||||
)));
|
||||
}
|
||||
return Stack(
|
||||
clipBehavior: Clip.none,
|
||||
children: list,
|
||||
);
|
||||
}
|
||||
|
||||
/// build one child.
|
||||
Widget? _buildOneChild(BuildContext context) {
|
||||
double? bigImgWidth = widget.bigImageWidth?.toDouble();
|
||||
double? bigImgHeight = widget.bigImageHeight?.toDouble();
|
||||
if (!_isZero(bigImgWidth) && !_isZero(bigImgHeight)) {
|
||||
return _getOneChild(context, bigImgWidth!, bigImgHeight!);
|
||||
} else if (widget.bigImage != null) {
|
||||
String bigImageUrl = widget.bigImageUrl!;
|
||||
Rect? bigImgRect = ngvBigImageSizeMap[bigImageUrl];
|
||||
bigImgWidth = bigImgRect?.width;
|
||||
bigImgHeight = bigImgRect?.height;
|
||||
if (!_isZero(bigImgWidth) && !_isZero(bigImgHeight)) {
|
||||
return _getOneChild(context, bigImgWidth!, bigImgHeight!);
|
||||
} else {
|
||||
_ImageUtil().getImageSize(widget.bigImage)?.then((rect) {
|
||||
ngvBigImageSizeMap[bigImageUrl] = rect;
|
||||
if (!mounted) return;
|
||||
setState(() {});
|
||||
}).catchError((e) {});
|
||||
}
|
||||
}
|
||||
return null;
|
||||
}
|
||||
|
||||
/// get one child.
|
||||
Widget _getOneChild(BuildContext context, double width, double height) {
|
||||
Rect rect = _getBigImgSize(width, height);
|
||||
return SizedBox(
|
||||
width: rect.width,
|
||||
height: rect.height,
|
||||
child: widget.itemBuilder(context, 0),
|
||||
);
|
||||
}
|
||||
|
||||
/// build weChat group.
|
||||
Widget _buildWeChatGroup(BuildContext context) {
|
||||
double width = widget.width! - widget.padding.horizontal;
|
||||
double space = widget.space;
|
||||
double itemW;
|
||||
|
||||
int column = widget.itemCount < 5 ? 2 : 3;
|
||||
int row = 0;
|
||||
if (widget.itemCount == 1) {
|
||||
row = 1;
|
||||
itemW = width;
|
||||
} else if (widget.itemCount < 5) {
|
||||
row = widget.itemCount == 2 ? 1 : 2;
|
||||
itemW = (width - space) / 2;
|
||||
} else if (widget.itemCount < 7) {
|
||||
row = 2;
|
||||
itemW = (width - space * 2) / 3;
|
||||
} else {
|
||||
row = 3;
|
||||
itemW = (width - space * 2) / 3;
|
||||
}
|
||||
|
||||
int first = widget.itemCount % column;
|
||||
List<Widget> list = [];
|
||||
for (int i = 0; i < widget.itemCount; i++) {
|
||||
double left;
|
||||
if (first > 0 && i < first) {
|
||||
left = (width - itemW * first - space * (first - 1)) / 2 +
|
||||
(itemW + space) * i;
|
||||
} else {
|
||||
left = (space + itemW) * ((i - first) % column);
|
||||
}
|
||||
|
||||
int itemIndex = (first > 0 && i < first)
|
||||
? 0
|
||||
: (first > 0 ? (i + column - first) : i) ~/ column;
|
||||
|
||||
double top = (width - itemW * row - space * (row - 1)) / 2 +
|
||||
(space + itemW) * itemIndex;
|
||||
|
||||
list.add(Positioned(
|
||||
top: top,
|
||||
left: left,
|
||||
child: SizedBox(
|
||||
width: itemW,
|
||||
height: itemW,
|
||||
child: widget.itemBuilder(context, i),
|
||||
)));
|
||||
}
|
||||
return Stack(
|
||||
clipBehavior: Clip.none,
|
||||
children: list,
|
||||
);
|
||||
}
|
||||
|
||||
/// build dingTalk group.
|
||||
Widget _buildDingTalkGroup(BuildContext context) {
|
||||
double width = widget.width! - widget.padding.horizontal;
|
||||
int itemCount = math.min(4, widget.itemCount);
|
||||
double itemW = (width - widget.space) / 2;
|
||||
List<Widget> children = [];
|
||||
for (int i = 0; i < itemCount; i++) {
|
||||
children.add(Positioned(
|
||||
top: (widget.space + itemW) * (i ~/ 2),
|
||||
left: (widget.space + itemW) *
|
||||
(((itemCount == 3 && i == 2) ? i + 1 : i) % 2),
|
||||
child: SizedBox(
|
||||
width: itemCount == 1 ? width : itemW,
|
||||
height:
|
||||
(itemCount == 1 || itemCount == 2 || (itemCount == 3 && i == 0))
|
||||
? width
|
||||
: itemW,
|
||||
child: widget.itemBuilder(context, i),
|
||||
)));
|
||||
}
|
||||
return ClipOval(
|
||||
child: Stack(
|
||||
clipBehavior: Clip.none,
|
||||
children: children,
|
||||
),
|
||||
);
|
||||
}
|
||||
|
||||
/// build QQ group.
|
||||
Widget _buildQQGroup(BuildContext context) {
|
||||
double width = widget.width! - widget.padding.horizontal;
|
||||
int itemCount = math.min(5, widget.itemCount);
|
||||
if (itemCount == 1) {
|
||||
return ClipOval(
|
||||
child: SizedBox(
|
||||
width: width,
|
||||
height: width,
|
||||
child: widget.itemBuilder(context, 0),
|
||||
));
|
||||
}
|
||||
|
||||
List<Widget> children = [];
|
||||
double startDegree = 0;
|
||||
double r = 0;
|
||||
double r1 = 0;
|
||||
double centerX = width / 2;
|
||||
double centerY = width / 2;
|
||||
switch (itemCount) {
|
||||
case 2:
|
||||
startDegree = 135;
|
||||
r = width / (2 + 2 * math.sin(math.pi / 4));
|
||||
r1 = r;
|
||||
break;
|
||||
case 3:
|
||||
startDegree = 210;
|
||||
r = width / (2 + 4 * math.sin(math.pi * (3 - 2) / (2 * 3)));
|
||||
r1 = r / math.cos(math.pi * (3 - 2) / (2 * 3));
|
||||
double R = r *
|
||||
(1 + math.sin(math.pi / itemCount)) /
|
||||
math.sin(math.pi / itemCount);
|
||||
double dy = 0.5 * (width - R - r * (1 + 1 / math.tan(math.pi / 3)));
|
||||
centerY = dy + r + r1;
|
||||
break;
|
||||
case 4:
|
||||
startDegree = 180;
|
||||
r = width / 4;
|
||||
r1 = r / math.cos(math.pi / 4);
|
||||
break;
|
||||
case 5:
|
||||
startDegree = 126;
|
||||
r = width / (2 + 4 * math.sin(math.pi * (5 - 2) / (2 * 5)));
|
||||
r1 = r / math.cos(math.pi * (5 - 2) / (2 * 5));
|
||||
double R = r *
|
||||
(1 + math.sin(math.pi / itemCount)) /
|
||||
math.sin(math.pi / itemCount);
|
||||
double dy = 0.5 * (width - R - r * (1 + 1 / math.tan(math.pi / 5)));
|
||||
centerY = dy + r + r1;
|
||||
break;
|
||||
}
|
||||
|
||||
for (int i = 0; i < itemCount; i++) {
|
||||
double degree1 = (itemCount == 2 || itemCount == 4) ? (-math.pi / 4) : 0;
|
||||
double x = centerX + r1 * math.sin(degree1 + i * 2 * math.pi / itemCount);
|
||||
double y = centerY - r1 * math.cos(degree1 + i * 2 * math.pi / itemCount);
|
||||
|
||||
double degree = startDegree + i * 2 * 180 / itemCount;
|
||||
if (degree >= 360) degree = degree % 360;
|
||||
double previousX = r + 2 * r * math.sin(degree / 180 * math.pi);
|
||||
double previousY = r - 2 * r * math.cos(degree / 180 * math.pi);
|
||||
|
||||
Widget child = Positioned.fromRect(
|
||||
rect: Rect.fromCircle(center: Offset(x, y), radius: r),
|
||||
child: ClipPath(
|
||||
clipper: QQClipper(
|
||||
total: itemCount,
|
||||
index: i,
|
||||
initIndex: widget.initIndex,
|
||||
previousX: previousX,
|
||||
previousY: previousY,
|
||||
degree: degree,
|
||||
arcAngle: widget.arcAngle,
|
||||
space: widget.space,
|
||||
),
|
||||
child: widget.itemBuilder(context, i),
|
||||
),
|
||||
);
|
||||
children.add(child);
|
||||
}
|
||||
|
||||
return Stack(
|
||||
clipBehavior: Clip.none,
|
||||
children: children,
|
||||
);
|
||||
}
|
||||
|
||||
/// double is zero.
|
||||
bool _isZero(double? value) {
|
||||
return value == null || value == 0;
|
||||
}
|
||||
|
||||
/// get big image size.
|
||||
Rect _getBigImgSize(double originalWidth, double originalHeight) {
|
||||
double width = widget.width ??
|
||||
(MediaQuery.of(context).size.width - widget.margin.horizontal);
|
||||
width = width - widget.padding.horizontal;
|
||||
double itemW = (width - widget.space * 2) / 3;
|
||||
|
||||
//double devicePixelRatio = MediaQuery.of(context)?.devicePixelRatio ?? 3;
|
||||
double devicePixelRatio = 1.0;
|
||||
double tempWidth = originalWidth / devicePixelRatio;
|
||||
double tempHeight = originalHeight / devicePixelRatio;
|
||||
double maxW = itemW * 2 + widget.space;
|
||||
double minW = width / 2;
|
||||
|
||||
double relWidth = tempWidth >= maxW ? maxW : math.max(minW, tempWidth);
|
||||
|
||||
double relHeight;
|
||||
double ratio = tempWidth / tempHeight;
|
||||
if (tempWidth == tempHeight) {
|
||||
relHeight = relWidth;
|
||||
} else if (tempWidth > tempHeight) {
|
||||
relHeight = relWidth / (math.min(ratio, 4 / 3));
|
||||
} else {
|
||||
relHeight = relWidth / (math.max(ratio, 3 / 4));
|
||||
}
|
||||
return Rect.fromLTRB(0, 0, relWidth, relHeight);
|
||||
}
|
||||
|
||||
@override
|
||||
Widget build(BuildContext context) {
|
||||
Widget? child;
|
||||
double? realWidth = widget.width;
|
||||
double? realHeight = widget.height;
|
||||
switch (widget.type) {
|
||||
case NineGridType.normal:
|
||||
case NineGridType.weiBo:
|
||||
case NineGridType.weChat:
|
||||
Rect size = _initSize(context);
|
||||
if (widget.itemCount == 1) {
|
||||
child = _buildOneChild(context);
|
||||
if (child == null) {
|
||||
realWidth = size.right;
|
||||
realHeight = size.bottom;
|
||||
child = _buildChild(context, size.left);
|
||||
}
|
||||
} else {
|
||||
realWidth = size.right;
|
||||
realHeight = size.bottom;
|
||||
child = _buildChild(context, size.left);
|
||||
}
|
||||
break;
|
||||
case NineGridType.weChatGp:
|
||||
child = _buildWeChatGroup(context);
|
||||
break;
|
||||
case NineGridType.dingTalkGp:
|
||||
child = _buildDingTalkGroup(context);
|
||||
break;
|
||||
case NineGridType.qqGp:
|
||||
child = _buildQQGroup(context);
|
||||
break;
|
||||
}
|
||||
return Container(
|
||||
alignment: widget.alignment,
|
||||
color: widget.color,
|
||||
decoration: widget.decoration,
|
||||
margin: widget.margin,
|
||||
padding: widget.padding,
|
||||
width: realWidth,
|
||||
height: realHeight,
|
||||
child: child,
|
||||
);
|
||||
}
|
||||
}
|
||||
|
||||
/// image util.
|
||||
class _ImageUtil {
|
||||
late ImageStreamListener listener;
|
||||
late ImageStream imageStream;
|
||||
|
||||
/// get image size.
|
||||
Future<Rect>? getImageSize(Image? image) {
|
||||
if (image == null) {
|
||||
return null;
|
||||
}
|
||||
Completer<Rect> completer = Completer<Rect>();
|
||||
listener = ImageStreamListener(
|
||||
(ImageInfo info, bool synchronousCall) {
|
||||
imageStream.removeListener(listener);
|
||||
if (!completer.isCompleted) {
|
||||
completer.complete(Rect.fromLTWH(
|
||||
0, 0, info.image.width.toDouble(), info.image.height.toDouble()));
|
||||
}
|
||||
},
|
||||
onError: (dynamic exception, StackTrace? stackTrace) {
|
||||
imageStream.removeListener(listener);
|
||||
if (!completer.isCompleted) {
|
||||
completer.completeError(exception, stackTrace);
|
||||
}
|
||||
},
|
||||
);
|
||||
imageStream = image.image.resolve(const ImageConfiguration());
|
||||
imageStream.addListener(listener);
|
||||
return completer.future;
|
||||
}
|
||||
}
|
||||
|
||||
/// QQ Clipper.
|
||||
class QQClipper extends CustomClipper<Path> {
|
||||
QQClipper({
|
||||
this.total = 0,
|
||||
this.index = 0,
|
||||
this.initIndex = 1,
|
||||
this.previousX = 0,
|
||||
this.previousY = 0,
|
||||
this.degree = 0,
|
||||
this.arcAngle = 0,
|
||||
this.space = 0,
|
||||
}) : assert(arcAngle >= 0 && arcAngle <= 180);
|
||||
|
||||
final int total;
|
||||
final int index;
|
||||
final int initIndex;
|
||||
final double previousX;
|
||||
final double previousY;
|
||||
final double degree;
|
||||
final double arcAngle;
|
||||
final double space;
|
||||
|
||||
@override
|
||||
Path getClip(Size size) {
|
||||
double r = size.width / 2;
|
||||
Path path = Path();
|
||||
List<Offset> points = [];
|
||||
|
||||
if (total == 2 && index == initIndex) {
|
||||
path.addOval(Rect.fromLTRB(0, 0, size.width, size.height));
|
||||
} else {
|
||||
/// arcAngle and space, prefer to use arcAngle.
|
||||
double spaceA = arcAngle > 0
|
||||
? (arcAngle / 2)
|
||||
: (math.acos((r - math.min(r, space)) / r) / math.pi * 180);
|
||||
double startA = degree + spaceA;
|
||||
double endA = degree - spaceA;
|
||||
for (double i = startA; i <= 360 + endA; i = i + 1) {
|
||||
double x1 = r + r * math.sin(d2r(i));
|
||||
double y1 = r - r * math.cos(d2r(i));
|
||||
points.add(Offset(x1, y1));
|
||||
}
|
||||
|
||||
double spaceB = math.atan(
|
||||
r * math.sin(d2r(spaceA)) / (2 * r - r * math.cos(d2r(spaceA)))) /
|
||||
math.pi *
|
||||
180;
|
||||
double r1 = (2 * r - r * math.cos(d2r(spaceA))) / math.cos(d2r(spaceB));
|
||||
double startB = degree - 180 - spaceB;
|
||||
double endB = degree - 180 + spaceB;
|
||||
List<Offset> pointsB = [];
|
||||
for (double i = startB; i < endB; i = i + 1) {
|
||||
double x1 = previousX + r1 * math.sin(d2r(i));
|
||||
double y1 = previousY - r1 * math.cos(d2r(i));
|
||||
pointsB.add(Offset(x1, y1));
|
||||
}
|
||||
points.addAll(pointsB.reversed);
|
||||
path.addPolygon(points, true);
|
||||
}
|
||||
return path;
|
||||
}
|
||||
|
||||
/// degree to radian.
|
||||
double d2r(double degree) {
|
||||
return degree / 180 * math.pi;
|
||||
}
|
||||
|
||||
@override
|
||||
bool shouldReclip(CustomClipper<Path> oldClipper) {
|
||||
return this != oldClipper;
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user