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取色器取色点移出屏幕会出现取色异常的bug #21

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取色器取色点移出屏幕会出现取色异常的bug #21

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882f7dd
Update color_sucker.dart
longer96 Aug 16, 2021
2870cca
[fix]:ColorSucker move off screen bug
longer96 Aug 16, 2021
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21 changes: 18 additions & 3 deletions kits/flutter_ume_kit_ui/lib/components/color_sucker/color_sucker.dart
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Original file line number Diff line number Diff line change
@@ -1,4 +1,5 @@
import 'dart:convert';
import 'dart:math';
import 'dart:typed_data';
import 'dart:ui' as ui;
import 'package:flutter/material.dart';
Expand Down Expand Up @@ -75,21 +76,35 @@ class _ColorSuckerState extends State<ColorSucker> {
}

void _onPanUpdate(DragUpdateDetails dragDetails) {
_magnifierPosition =
dragDetails.globalPosition - _magnifierSize.center(Offset.zero);
double newX = dragDetails.globalPosition.dx;
double newY = dragDetails.globalPosition.dy;
if (newX + (_magnifierSize.width / 2) < 0) {
newX = 0;
} else if (newX >= _windowSize.width) {
newX = _windowSize.width - 1;
}

if (newY + (_magnifierSize.height / 2) < 0) {
newY = 0;
} else if (newY >= _windowSize.height) {
newY = _windowSize.height - 1;
}

_magnifierPosition =
Offset(newX, newY) - _magnifierSize.center(Offset.zero);

final Matrix4 newMatrix = Matrix4.identity()
..translate(newX, newY)
..scale(_scale, _scale)
..translate(-newX, -newY);
_matrix = newMatrix;
_searchPixel(dragDetails.globalPosition);
_searchPixel(Offset(newX, newY));
setState(() {});
}

void _toolBarPanUpdate(DragUpdateDetails dragDetails) {
_toolBarY = dragDetails.globalPosition.dy - 40;
_toolBarY = max(0, _toolBarY);
setState(() {});
}

Expand Down