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Feature: add flip #80

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Feature: add flip #80

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28 changes: 20 additions & 8 deletions lib/src/crop.dart
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Original file line number Diff line number Diff line change
Expand Up @@ -19,6 +19,7 @@ class Crop extends StatefulWidget {
final double maximumScale;
final bool alwaysShowGrid;
final ImageErrorListener? onImageError;
final bool flip;

const Crop({
Key? key,
Expand All @@ -27,6 +28,7 @@ class Crop extends StatefulWidget {
this.maximumScale = 2.0,
this.alwaysShowGrid = false,
this.onImageError,
this.flip = false,
}) : super(key: key);

Crop.file(
Expand All @@ -37,6 +39,7 @@ class Crop extends StatefulWidget {
this.maximumScale = 2.0,
this.alwaysShowGrid = false,
this.onImageError,
this.flip = false,
}) : image = FileImage(file, scale: scale),
super(key: key);

Expand All @@ -49,6 +52,7 @@ class Crop extends StatefulWidget {
this.maximumScale = 2.0,
this.alwaysShowGrid = false,
this.onImageError,
this.flip = false,
}) : image = AssetImage(assetName, bundle: bundle, package: package),
super(key: key);

Expand All @@ -72,6 +76,7 @@ class CropState extends State<Crop> with TickerProviderStateMixin, Drag {
Offset _lastFocalPoint = Offset.zero;
_CropAction _action = _CropAction.none;
_CropHandleSide _handle = _CropHandleSide.none;
bool flip = false;

late double _startScale;
late Rect _startView;
Expand Down Expand Up @@ -111,6 +116,7 @@ class CropState extends State<Crop> with TickerProviderStateMixin, Drag {
)..addListener(() => setState(() {}));
_settleController = AnimationController(vsync: this)
..addListener(_settleAnimationChanged);
flip = widget.flip;
}

@override
Expand All @@ -136,6 +142,8 @@ class CropState extends State<Crop> with TickerProviderStateMixin, Drag {
void didUpdateWidget(Crop oldWidget) {
super.didUpdateWidget(oldWidget);

flip = widget.flip;
debugPrint('didUpdateWidget flip: $flip');
if (widget.image != oldWidget.image) {
_getImage();
} else if (widget.aspectRatio != oldWidget.aspectRatio) {
Expand Down Expand Up @@ -184,14 +192,18 @@ class CropState extends State<Crop> with TickerProviderStateMixin, Drag {
onScaleStart: _isEnabled ? _handleScaleStart : null,
onScaleUpdate: _isEnabled ? _handleScaleUpdate : null,
onScaleEnd: _isEnabled ? _handleScaleEnd : null,
child: CustomPaint(
painter: _CropPainter(
image: _image,
ratio: _ratio,
view: _view,
area: _area,
scale: _scale,
active: _activeController.value,
child: Transform(
alignment: Alignment.center,
transform: Matrix4.rotationY(flip ? pi : 0),
child: CustomPaint(
painter: _CropPainter(
image: _image,
ratio: _ratio,
view: _view,
area: _area,
scale: _scale,
active: _activeController.value,
),
),
),
),
Expand Down