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opt image grid

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Signed-off-by: dom <githubaccount56556@proton.me>
This commit is contained in:
dom
2026-01-19 17:36:21 +08:00
parent bd97f9a500
commit 036dbcaf21
2 changed files with 129 additions and 489 deletions
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156
lib/common/widgets/image/custom_grid_view.dart
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@@ -20,7 +20,6 @@ import 'dart:math' show min;
import 'package:PiliPlus/common/constants.dart';
import 'package:PiliPlus/common/widgets/badge.dart';
import 'package:PiliPlus/common/widgets/flutter/custom_layout.dart';
import 'package:PiliPlus/common/widgets/image/network_img_layer.dart';
import 'package:PiliPlus/models/common/badge_type.dart';
import 'package:PiliPlus/models/common/image_preview_type.dart';
@@ -33,6 +32,12 @@ import 'package:PiliPlus/utils/platform_utils.dart';
import 'package:PiliPlus/utils/storage_pref.dart';
import 'package:flutter/material.dart'
hide CustomMultiChildLayout, MultiChildLayoutDelegate;
import 'package:flutter/rendering.dart'
show
ContainerRenderObjectMixin,
RenderBoxContainerDefaultsMixin,
MultiChildLayoutParentData,
BoxHitTestResult;
import 'package:flutter/services.dart' show HapticFeedback;
import 'package:get/get_core/src/get_main.dart';
import 'package:get/get_navigation/get_navigation.dart';
@@ -244,14 +249,12 @@ class CustomGridView extends StatelessWidget {
child: SizedBox(
width: maxWidth,
height: imageHeight * row + space * (row - 1),
child: CustomMultiChildLayout(
delegate: _CustomGridViewDelegate(
space: space,
itemCount: length,
column: column,
width: imageWidth,
height: imageHeight,
),
child: ImageGrid(
space: space,
itemCount: length,
column: column,
width: imageWidth,
height: imageHeight,
children: List.generate(length, (index) {
final item = picArr[index];
final radius = borderRadius(column, length, index);
@@ -310,8 +313,10 @@ class CustomGridView extends StatelessWidget {
}
}
class _CustomGridViewDelegate extends MultiChildLayoutDelegate {
_CustomGridViewDelegate({
class ImageGrid extends MultiChildRenderObjectWidget {
const ImageGrid({
super.key,
super.children,
required this.space,
required this.itemCount,
required this.column,
@@ -326,31 +331,128 @@ class _CustomGridViewDelegate extends MultiChildLayoutDelegate {
final double height;
@override
void performLayout(Size size) {
final constraints = BoxConstraints(
RenderObject createRenderObject(BuildContext context) {
return RenderImageGrid(
space: space,
itemCount: itemCount,
column: column,
width: width,
height: height,
);
}
@override
void updateRenderObject(BuildContext context, RenderImageGrid renderObject) {
renderObject
..space = space
..itemCount = itemCount
..column = column
..width = width
..height = height;
}
}
class RenderImageGrid extends RenderBox
with
ContainerRenderObjectMixin<RenderBox, MultiChildLayoutParentData>,
RenderBoxContainerDefaultsMixin<RenderBox, MultiChildLayoutParentData> {
RenderImageGrid({
required double space,
required int itemCount,
required int column,
required double width,
required double height,
}) : _space = space,
_itemCount = itemCount,
_column = column,
_width = width,
_height = height;
double _space;
double get space => _space;
set space(double value) {
if (_space == value) return;
_space = value;
markNeedsPaint();
}
int _itemCount;
int get itemCount => _itemCount;
set itemCount(int value) {
if (_itemCount == value) return;
_itemCount = value;
markNeedsPaint();
}
int _column;
int get column => _column;
set column(int value) {
if (_space == value) return;
_column = value;
markNeedsPaint();
}
double _width;
double get width => _width;
set width(double value) {
if (_width == value) return;
_width = value;
markNeedsPaint();
}
double _height;
double get height => _height;
set height(double value) {
if (_height == value) return;
_height = value;
markNeedsPaint();
}
@override
void setupParentData(RenderBox child) {
if (child.parentData is! MultiChildLayoutParentData) {
child.parentData = MultiChildLayoutParentData();
}
}
@override
void performLayout() {
size = constraints.constrain(constraints.biggest);
final itemConstraints = BoxConstraints(
minWidth: width,
maxWidth: width,
minHeight: height,
maxHeight: height,
);
for (int i = 0; i < itemCount; i++) {
layoutChild(i, constraints);
positionChild(
i,
Offset(
(space + width) * (i % column),
(space + height) * (i ~/ column),
),
RenderBox? child = firstChild;
while (child != null) {
final childParentData = child.parentData as MultiChildLayoutParentData;
final index = childParentData.id as int;
child.layout(itemConstraints, parentUsesSize: true);
childParentData.offset = Offset(
(space + width) * (index % column),
(space + height) * (index ~/ column),
);
child = childParentData.nextSibling;
}
}
@override
bool shouldRelayout(_CustomGridViewDelegate oldDelegate) {
return space != oldDelegate.space ||
itemCount != oldDelegate.itemCount ||
column != oldDelegate.column ||
width != oldDelegate.width ||
height != oldDelegate.height;
void paint(PaintingContext context, Offset offset) {
RenderBox? child = firstChild;
while (child != null) {
final childParentData = child.parentData as MultiChildLayoutParentData;
context.paintChild(child, childParentData.offset + offset);
child = childParentData.nextSibling;
}
}
@override
bool hitTestChildren(BoxHitTestResult result, {required Offset position}) {
return defaultHitTestChildren(result, position: position);
}
@override
bool get isRepaintBoundary => true;
}