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BirjuVachhaniBirjuVachhani
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♻️ refactor transformable_box.dart file
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7 files changed

+322
-292
lines changed

7 files changed

+322
-292
lines changed

‎packages/flutter_box_transform/lib/flutter_box_transform.dart‎

Lines changed: 3 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -2,9 +2,10 @@ library flutter_box_transform;
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export 'package:box_transform/box_transform.dart';
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5-
export 'src/extensions.dart' hide DimensionExt;
6-
export 'src/handle.dart';
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export 'src/extensions.dart';
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export 'src/handles.dart';
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export 'src/transformable_box.dart';
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export 'src/transformable_box_controller.dart';
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export 'src/typedefs.dart';
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export 'src/ui_box_transform.dart';
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export 'src/ui_result.dart';

‎packages/flutter_box_transform/lib/src/handle_builders.dart‎

Lines changed: 188 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,188 @@
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import 'package:box_transform/box_transform.dart';
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import 'package:flutter/material.dart';
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import 'typedefs.dart';
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/// Creates a new corner handle widget, with its appropriate gesture splash
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/// zone.
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@protected
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class CornerHandleWidget extends StatelessWidget {
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/// The position of the handle.
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final HandlePosition handlePosition;
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/// The builder that is used to build the handle widget.
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final HandleBuilder builder;
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/// The size of the handle's gesture response area.
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final double handleTapSize;
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/// Called when the handle dragging starts.
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final GestureDragStartCallback? onPanStart;
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/// Called when the handle dragging is updated.
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final GestureDragUpdateCallback? onPanUpdate;
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/// Called when the handle dragging ends.
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final GestureDragEndCallback? onPanEnd;
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/// Called when the handle dragging is canceled.
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final GestureDragCancelCallback? onPanCancel;
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/// Whether the handle is resizable.
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final bool enabled;
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/// Creates a new handle widget.
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CornerHandleWidget({
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super.key,
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required this.handlePosition,
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required this.handleTapSize,
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required this.builder,
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this.onPanStart,
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this.onPanUpdate,
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this.onPanEnd,
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this.onPanCancel,
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required this.enabled,
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}) : assert(handlePosition.isDiagonal, 'A corner handle must be diagonal.');
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@override
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Widget build(BuildContext context) {
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Widget child = builder(context, handlePosition);
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if (enabled) {
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child = GestureDetector(
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behavior: HitTestBehavior.opaque,
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onPanStart: onPanStart,
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onPanUpdate: onPanUpdate,
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onPanEnd: onPanEnd,
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onPanCancel: onPanCancel,
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child: MouseRegion(
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cursor: getCursorForHandle(handlePosition),
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child: child,
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),
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);
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}
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return Positioned(
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left: handlePosition.influencesLeft ? 0 : null,
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right: handlePosition.influencesRight ? 0 : null,
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top: handlePosition.influencesTop ? 0 : null,
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bottom: handlePosition.influencesBottom ? 0 : null,
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width: handleTapSize,
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height: handleTapSize,
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child: child,
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);
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}
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/// Returns the cursor for the given handle position.
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MouseCursor getCursorForHandle(HandlePosition handle) {
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switch (handle) {
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case HandlePosition.topLeft:
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case HandlePosition.bottomRight:
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return SystemMouseCursors.resizeUpLeftDownRight;
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case HandlePosition.topRight:
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case HandlePosition.bottomLeft:
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return SystemMouseCursors.resizeUpRightDownLeft;
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default:
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throw Exception('Invalid handle position.');
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}
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}
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}
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/// Creates a new cardinal handle widget, with its appropriate gesture splash
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/// zone.
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@protected
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class SideHandleWidget extends StatelessWidget {
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/// The position of the handle.
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final HandlePosition handlePosition;
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/// The builder that is used to build the handle widget.
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final HandleBuilder builder;
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/// The thickness of the handle that is used for gesture detection.
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final double handleTapSize;
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/// Called when the handle dragging starts.
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final GestureDragStartCallback? onPanStart;
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/// Called when the handle dragging is updated.
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final GestureDragUpdateCallback? onPanUpdate;
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/// Called when the handle dragging ends.
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final GestureDragEndCallback? onPanEnd;
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/// Called when the handle dragging is canceled.
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final GestureDragCancelCallback? onPanCancel;
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/// Whether the handle is resizable.
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final bool enabled;
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/// Creates a new handle widget.
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SideHandleWidget({
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super.key,
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required this.handlePosition,
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required this.handleTapSize,
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required this.builder,
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this.onPanStart,
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this.onPanUpdate,
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this.onPanEnd,
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this.onPanCancel,
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required this.enabled,
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}) : assert(handlePosition.isSide, 'A cardinal handle must be cardinal.');
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@override
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Widget build(BuildContext context) {
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Widget child = builder(context, handlePosition);
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if (enabled) {
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child = GestureDetector(
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behavior: HitTestBehavior.opaque,
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onPanStart: onPanStart,
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onPanUpdate: onPanUpdate,
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onPanEnd: onPanEnd,
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onPanCancel: onPanCancel,
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child: MouseRegion(
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cursor: getCursorForHandle(handlePosition),
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child: child,
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),
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);
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}
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return Positioned(
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left: handlePosition.isVertical
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? handleTapSize
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: handlePosition.influencesLeft
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? 0
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: null,
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right: handlePosition.isVertical
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? handleTapSize
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: handlePosition.influencesRight
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? 0
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: null,
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top: handlePosition.isHorizontal
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? handleTapSize
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: handlePosition.influencesTop
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? 0
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: null,
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bottom: handlePosition.isHorizontal
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? handleTapSize
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: handlePosition.influencesBottom
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? 0
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: null,
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width: handlePosition.isHorizontal ? handleTapSize : null,
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height: handlePosition.isVertical ? handleTapSize : null,
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child: child,
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);
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}
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/// Returns the cursor for the given handle position.
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MouseCursor getCursorForHandle(HandlePosition handle) {
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switch (handle) {
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case HandlePosition.left:
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case HandlePosition.right:
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return SystemMouseCursors.resizeLeftRight;
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case HandlePosition.top:
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case HandlePosition.bottom:
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return SystemMouseCursors.resizeUpDown;
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default:
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throw Exception('Invalid handle position.');
186+
}
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}
188+
}

packages/flutter_box_transform/lib/src/handle.dart renamed to packages/flutter_box_transform/lib/src/handles.dart

Lines changed: 1 addition & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -1,9 +1,8 @@
11
import 'dart:math';
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3+
import 'package:box_transform/box_transform.dart';
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import 'package:flutter/material.dart';
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5-
import '../flutter_box_transform.dart';
6-
76
/// Default width of the border of the handles.
87
const kDefaultHandleBorderWidth = 1.5;
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