public override Widget build(BuildContext context)
{
List <Widget> items = new List <Widget>();
Widget onePhysicalPixelVerticalDivider =
new SizedBox(width: 1.0f / MediaQuery.of(context).devicePixelRatio);
CupertinoLocalizations localizations = CupertinoLocalizations.of(context);
if (this.handleCut != null)
{
items.Add(this._buildToolbarButton(localizations.cutButtonLabel, this.handleCut));
}
if (this.handleCopy != null)
{
if (items.isNotEmpty())
{
items.Add(onePhysicalPixelVerticalDivider);
}
items.Add(this._buildToolbarButton(localizations.copyButtonLabel, this.handleCopy));
}
if (this.handlePaste != null)
{
if (items.isNotEmpty())
{
items.Add(onePhysicalPixelVerticalDivider);
}
items.Add(this._buildToolbarButton(localizations.pasteButtonLabel, this.handlePaste));
}
if (this.handleSelectAll != null)
{
if (items.isNotEmpty())
{
items.Add(onePhysicalPixelVerticalDivider);
}
items.Add(this._buildToolbarButton(localizations.selectAllButtonLabel, this.handleSelectAll));
}
Widget triangle = SizedBox.fromSize(
size: CupertinoTextSelectionUtils._kToolbarTriangleSize,
child: new CustomPaint(
painter: new _TextSelectionToolbarNotchPainter()
)
);
return(new Column(
mainAxisSize: MainAxisSize.min,
children: new List <Widget> {
new ClipRRect(
borderRadius: CupertinoTextSelectionUtils._kToolbarBorderRadius,
child: new DecoratedBox(
decoration: new BoxDecoration(
color: CupertinoTextSelectionUtils._kToolbarDividerColor,
borderRadius: CupertinoTextSelectionUtils._kToolbarBorderRadius,
border: Border.all(color: CupertinoTextSelectionUtils._kToolbarBackgroundColor,
width: 0)
),
child: new Row(mainAxisSize: MainAxisSize.min, children: items)
)
),
triangle,
new Padding(padding: EdgeInsets.only(bottom: 10.0f))
}
));
}
public override Widget buildToolbar(
BuildContext context,
Rect globalEditableRegion,
float textLineHeight,
Offset position,
List <TextSelectionPoint> endpoints,
TextSelectionDelegate _delegate
)
{
D.assert(WidgetsD.debugCheckHasMediaQuery(context));
MediaQueryData mediaQuery = MediaQuery.of(context);
float toolbarHeightNeeded = mediaQuery.padding.top
+ CupertinoTextSelectionUtils._kToolbarScreenPadding
+ CupertinoTextSelectionUtils._kToolbarHeight
+ CupertinoTextSelectionUtils._kToolbarContentDistance;
float availableHeight = globalEditableRegion.top + endpoints.first().point.dy - textLineHeight;
bool isArrowPointingDown = toolbarHeightNeeded <= availableHeight;
float arrowTipX = (position.dx + globalEditableRegion.left).clamp(
CupertinoTextSelectionUtils._kArrowScreenPadding + mediaQuery.padding.left,
mediaQuery.size.width - mediaQuery.padding.right - CupertinoTextSelectionUtils._kArrowScreenPadding
);
float localBarTopY = isArrowPointingDown
? endpoints.first().point.dy - textLineHeight - CupertinoTextSelectionUtils._kToolbarContentDistance - CupertinoTextSelectionUtils._kToolbarHeight
: endpoints.last().point.dy + CupertinoTextSelectionUtils._kToolbarContentDistance;
List <Widget> items = new List <Widget> {
};
Widget onePhysicalPixelVerticalDivider = new SizedBox(width: 1.0f / MediaQuery.of(context).devicePixelRatio);
CupertinoLocalizations localizations = CupertinoLocalizations.of(context);
EdgeInsets arrowPadding = isArrowPointingDown
? EdgeInsets.only(bottom: CupertinoTextSelectionUtils._kToolbarArrowSize.height)
: EdgeInsets.only(top: CupertinoTextSelectionUtils._kToolbarArrowSize.height);
void addToolbarButtonIfNeeded(
string text,
Predicate predicate,
OnPressed onPressed)
{
if (!predicate(_delegate))
{
return;
}
if (items.isNotEmpty())
{
items.Add(onePhysicalPixelVerticalDivider);
}
items.Add(new CupertinoButton(
child: new Text(text, style: CupertinoTextSelectionUtils._kToolbarButtonFontStyle),
color: CupertinoTextSelectionUtils._kToolbarBackgroundColor,
minSize: CupertinoTextSelectionUtils._kToolbarHeight,
padding: CupertinoTextSelectionUtils._kToolbarButtonPadding.add(arrowPadding),
borderRadius: null,
pressedOpacity: 0.7f,
onPressed: () => onPressed(_delegate)
));
}
addToolbarButtonIfNeeded(localizations.cutButtonLabel, canCut, handleCut);
addToolbarButtonIfNeeded(localizations.copyButtonLabel, canCopy, handleCopy);
addToolbarButtonIfNeeded(localizations.pasteButtonLabel, canPaste, handlePaste);
addToolbarButtonIfNeeded(localizations.selectAllButtonLabel, canSelectAll, handleSelectAll);
return(new CupertinoTextSelectionToolbar(
barTopY: localBarTopY + globalEditableRegion.top,
arrowTipX: arrowTipX,
isArrowPointingDown: isArrowPointingDown,
child: items.isEmpty() ? null : new DecoratedBox(
decoration: new BoxDecoration(color: CupertinoTextSelectionUtils._kToolbarDividerColor),
child: new Row(mainAxisSize: MainAxisSize.min, children: items)
)
));
}
