public static AlignmentDirectional getSheetAlignment(_ContextMenuLocation contextMenuLocation)
{
switch (contextMenuLocation)
{
case _ContextMenuLocation.center:
return(AlignmentDirectional.topCenter);
case _ContextMenuLocation.right:
return(AlignmentDirectional.topEnd);
default:
return(AlignmentDirectional.topStart);
}
}
public _ContextMenuSheet(
Key key = null,
List <Widget> actions = null,
_ContextMenuLocation contextMenuLocation = default,
Orientation orientation = default
) : base(key: key)
{
D.assert(actions != null && actions.isNotEmpty());
D.assert(contextMenuLocation != null);
D.assert(orientation != null);
_contextMenuLocation = contextMenuLocation;
_orientation = orientation;
this.actions = actions;
}
public _ContextMenuRoute(
List <Widget> actions = null,
_ContextMenuLocation contextMenuLocation = default,
string barrierLabel = null,
_ContextMenuPreviewBuilderChildless builder = null,
ImageFilter filter = null,
Rect previousChildRect = null,
RouteSettings settings = null
) : base(filter: filter, settings: settings)
{
D.assert(actions != null && actions.isNotEmpty());
D.assert(contextMenuLocation != null);
this.barrierLabel = barrierLabel;
_actions = actions;
_builder = builder;
_contextMenuLocation = contextMenuLocation;
_previousChildRect = previousChildRect;
}
Alignment _getChildAlignment(Orientation orientation, _ContextMenuLocation contextMenuLocation)
{
switch (contextMenuLocation)
{
case _ContextMenuLocation.center:
return(orientation == Orientation.portrait
? Alignment.bottomCenter
: Alignment.topRight);
case _ContextMenuLocation.right:
return(orientation == Orientation.portrait
? Alignment.bottomCenter
: Alignment.topLeft);
default:
return(orientation == Orientation.portrait
? Alignment.bottomCenter
: Alignment.topRight);
}
}
public _ContextMenuRouteStatic(
Key key = null,
List <Widget> actions = null,
Widget child = null,
GlobalKey childGlobalKey = null,
_ContextMenuLocation contextMenuLocation = default,
_DismissCallback onDismiss = default,
Orientation orientation = default,
GlobalKey sheetGlobalKey = null
) : base(key: key)
{
D.assert(contextMenuLocation != default);
D.assert(orientation != default);
this.actions = actions;
this.child = child;
this.childGlobalKey = childGlobalKey;
this.contextMenuLocation = contextMenuLocation;
this.onDismiss = onDismiss;
this.orientation = orientation;
this.sheetGlobalKey = sheetGlobalKey;
}
public static Rect _getSheetRectBegin(Orientation orientation, _ContextMenuLocation contextMenuLocation, Rect childRect, Rect sheetRect)
{
switch (contextMenuLocation)
{
case _ContextMenuLocation.center:
Offset target1 = (orientation == Orientation.portrait)
? childRect.bottomCenter
: childRect.topCenter;
Offset centered = target1 - new Offset(sheetRect.width / 2, 0.0f);
return(centered & sheetRect.size);
case _ContextMenuLocation.right:
Offset target2 = ((orientation == Orientation.portrait)
? childRect.bottomRight
: childRect.topRight);
return((target2 - new Offset(sheetRect.width, 0.0f)) & sheetRect.size);
default:
Offset target3 = orientation == Orientation.portrait
? childRect.bottomLeft
: childRect.topLeft;
return(target3 & sheetRect.size);
}
}
List <Widget> _getChildren(Orientation orientation, _ContextMenuLocation contextMenuLocation)
{
Expanded child = new Expanded(
child: new Align(
alignment: _getChildAlignment(
widget.orientation,
widget.contextMenuLocation
),
child: new AnimatedBuilder(
animation: _moveController,
builder: _buildChildAnimation,
child: widget.child
)
)
);
Container spacer = new Container(
width: _kPadding,
height: _kPadding
);
Expanded sheet = new Expanded(
child: new AnimatedBuilder(
animation: _sheetController,
builder: _buildSheetAnimation,
child: new _ContextMenuSheet(
key: widget.sheetGlobalKey,
actions: widget.actions,
contextMenuLocation: widget.contextMenuLocation,
orientation: widget.orientation
)
)
);
List <Widget> centerWidgets = new List <Widget>();
centerWidgets.Add(child);
centerWidgets.Add(spacer);
centerWidgets.Add(sheet);
List <Widget> rightWidgets = new List <Widget>();
rightWidgets.Add(sheet);
rightWidgets.Add(spacer);
rightWidgets.Add(child);
switch (contextMenuLocation)
{
case _ContextMenuLocation.center:
return(new List <Widget> {
child, spacer, sheet
});
case _ContextMenuLocation.right:
return(orientation == Orientation.portrait
? new List <Widget> {
child, spacer, sheet
}
: new List <Widget> {
sheet, spacer, child
});
default:
return(new List <Widget> {
child, spacer, sheet
});
}
}
