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103 lines
3.7 KiB
Dart
103 lines
3.7 KiB
Dart
/*
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* Copyright (c) 2021 Simform Solutions
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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import 'package:flutter/material.dart';
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class GetPosition {
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final GlobalKey? key;
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final EdgeInsets padding;
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final double? screenWidth;
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final double? screenHeight;
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GetPosition({
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this.key,
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this.padding = EdgeInsets.zero,
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this.screenWidth,
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this.screenHeight,
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});
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Rect getRect() {
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final box = key!.currentContext!.findRenderObject() as RenderBox;
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var boxOffset = box.localToGlobal(const Offset(0.0, 0.0));
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if (boxOffset.dx.isNaN || boxOffset.dy.isNaN) {
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return const Rect.fromLTRB(0, 0, 0, 0);
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}
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final topLeft = box.size.topLeft(boxOffset);
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final bottomRight = box.size.bottomRight(boxOffset);
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final rect = Rect.fromLTRB(
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topLeft.dx - padding.left < 0 ? 0 : topLeft.dx - padding.left,
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topLeft.dy - padding.top < 0 ? 0 : topLeft.dy - padding.top,
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bottomRight.dx + padding.right > screenWidth!
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? screenWidth!
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: bottomRight.dx + padding.right,
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bottomRight.dy + padding.bottom > screenHeight!
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? screenHeight!
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: bottomRight.dy + padding.bottom,
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);
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return rect;
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}
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///Get the bottom position of the widget
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double getBottom() {
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final box = key!.currentContext!.findRenderObject() as RenderBox;
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final boxOffset = box.localToGlobal(const Offset(0.0, 0.0));
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if (boxOffset.dy.isNaN) return padding.bottom;
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final bottomRight = box.size.bottomRight(boxOffset);
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return bottomRight.dy + padding.bottom;
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}
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///Get the top position of the widget
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double getTop() {
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final box = key!.currentContext!.findRenderObject() as RenderBox;
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final boxOffset = box.localToGlobal(const Offset(0.0, 0.0));
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if (boxOffset.dy.isNaN) return 0 - padding.top;
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final topLeft = box.size.topLeft(boxOffset);
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return topLeft.dy - padding.top;
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}
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///Get the left position of the widget
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double getLeft() {
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final box = key!.currentContext!.findRenderObject() as RenderBox;
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final boxOffset = box.localToGlobal(const Offset(0.0, 0.0));
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if (boxOffset.dx.isNaN) return 0 - padding.left;
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final topLeft = box.size.topLeft(boxOffset);
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return topLeft.dx - padding.left;
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}
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///Get the right position of the widget
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double getRight() {
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final box = key!.currentContext!.findRenderObject() as RenderBox;
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final boxOffset = box.localToGlobal(const Offset(0.0, 0.0));
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if (boxOffset.dx.isNaN) return padding.right;
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final bottomRight =
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box.size.bottomRight(box.localToGlobal(const Offset(0.0, 0.0)));
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return bottomRight.dx + padding.right;
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}
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double getHeight() => getBottom() - getTop();
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double getWidth() => getRight() - getLeft();
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double getCenter() => (getLeft() + getRight()) / 2;
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} |