43 lines
1.0 KiB
Dart
43 lines
1.0 KiB
Dart
import 'package:flutter/material.dart';
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class PageTransformer extends StatelessWidget {
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final List<Widget> pages;
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final PageController controller;
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const PageTransformer({
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super.key,
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required this.pages,
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required this.controller,
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});
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@override
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Widget build(BuildContext context) {
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return PageView.builder(
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controller: controller,
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itemCount: pages.length,
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itemBuilder: (context, index) {
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return _buildPage(pages[index], index);
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},
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);
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}
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Widget _buildPage(Widget page, int index) {
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return AnimatedBuilder(
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animation: controller,
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builder: (context, child) {
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double value = 1.0;
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if (controller.position.haveDimensions) {
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value = controller.page! - index;
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value = (1 - (value.abs() * 0.5)).clamp(0.0, 1.0);
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}
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return Transform(
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transform: Matrix4.identity()..scaleByDouble(value, value, value, 1),
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alignment: Alignment.center,
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child: child,
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);
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},
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child: page,
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);
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}
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}
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