Picture _buildPicture(_InspectorOverlayRenderState state)
{
PictureRecorder recorder = new PictureRecorder();
Canvas canvas = new RecorderCanvas(recorder);
Size size = state.overlayRect.size;
var fillPaint = new Paint()
{
color = _kHighlightedRenderObjectFillColor
};
var borderPaint = new Paint()
{
color = _kHighlightedRenderObjectBorderColor, style = PaintingStyle.stroke,
strokeWidth = 1
};
Rect selectedPaintRect = state.selected.rect.deflate(0.5f);
canvas.save();
canvas.setMatrix(state.selected.transform);
canvas.drawRect(selectedPaintRect, fillPaint);
canvas.drawRect(selectedPaintRect, borderPaint);
canvas.restore();
foreach (var transformedRect in state.candidates)
{
canvas.save();
canvas.setMatrix(transformedRect.transform);
canvas.drawRect(transformedRect.rect.deflate(0.5f), borderPaint);
canvas.restore();
}
// todo paint descipion
return(recorder.endRecording());
}
// public TextPainter _textPainter;
// public double _textPainterMaxWidth;
public override void addToScene(SceneBuilder builder, Offset layerOffset)
{
if (!this.selection.active)
{
return;
}
RenderObject selected = this.selection.current;
List <_TransformedRect> candidates = new List <_TransformedRect>();
foreach (RenderObject candidate in this.selection.candidates)
{
if (candidate == selected || !candidate.attached)
{
continue;
}
candidates.Add(new _TransformedRect(candidate));
}
_InspectorOverlayRenderState state = new _InspectorOverlayRenderState(this.overlayRect,
new _TransformedRect(selected),
candidates, this.selection.currentElement.toStringShort(),
TextDirection.ltr
);
if (state != this._lastState)
{
this._lastState = state;
this._picture = this._buildPicture(state);
}
builder.addPicture(layerOffset, this._picture);
}