protected void btnSelectAll_onClick()
{
//ChangeObjectsSelection(true);
RectD unionRect = ObjectsList.First().BoundingRectD();
foreach (BPaintObject obj in ObjectsList)
{
unionRect = unionRect.UnionWith(obj.BoundingRectD());
}
bpSelectionRectangle = new BPaintRectangle()
{
ObjectID = 999
};
BPaintVertex startVertex = new BPaintVertex(new PointD(unionRect.x - 10, unionRect.y - 10), "magenta");
SelectionVerticesList.Add(startVertex);
bpSelectionRectangle.Selected = false;
bpSelectionRectangle.EditMode = true;
bpSelectionRectangle.Color = "red";
bpSelectionRectangle.LineWidth = 2;
bpSelectionRectangle.Position = startVertex;
BPaintVertex endVertex = new BPaintVertex(new PointD(unionRect.x + unionRect.width + 10, unionRect.y + unionRect.height + 10), "magenta");
bpSelectionRectangle.end = endVertex;
SelectionVerticesList.Add(endVertex);
bpSelectionVertexUnderMousePointer = endVertex;
ProcessSelection();
cmd_RefreshSVG();
StateHasChanged();
}