public Point GetRandomSpotWithinBox(int border = 2)
{
if (border < 0)
{
border = Math.Abs(border);
}
if (Width <= border * 2 || Height <= border * 2)
{
throw new ArgumentOutOfRangeException(nameof(border));
}
if (border == 0)
{
return(new Point(RandomUtils.Random.NextDouble(Left, Right), RandomUtils.Random.NextDouble(Top, Bottom)));
}
var boundingBorder = new BoundingClientRect
{
Left = Left + border,
Right = Right - border,
Top = Top + border,
Bottom = Bottom - border,
Width = Width - (border * 2),
Height = Height - (border * 2)
};
return(boundingBorder.GetRandomSpotWithinBox(border = 0));
}
public Tuple <double, double> GetDelta(BoundingClientRect targetRect)
{
double deltaX = 0, deltaY = 0;
if (targetRect.Top < Top && targetRect.Bottom > Bottom)
{
deltaY = 0;
}
else
{
//Negative values scroll down.
if (targetRect.Bottom < Bottom)
{
deltaY = targetRect.Bottom - Bottom;
// Add a random amount between the target top and the top of the screen
deltaY += RandomUtils.Random.NextDouble(targetRect.Top - Bottom, 0);
deltaY = Math.Ceiling(deltaY);
}
//Positive values scroll up.
if (targetRect.Top > Top)
{
deltaY = targetRect.Top - Top;
deltaY += RandomUtils.Random.NextDouble(0, targetRect.Bottom - Top);
deltaY = Math.Floor(deltaY);
}
}
if (targetRect.Left < Left && targetRect.Right > Right)
{
deltaX = 0;
}
else
{
//Negative values to scroll right.
if (targetRect.Right < Right)
{
deltaX = Right - targetRect.Right;
deltaX += RandomUtils.Random.NextDouble(targetRect.Left - Top, 0);
deltaX = Math.Ceiling(deltaX);
}
//Positive values to scroll left.
if (targetRect.Left > Left)
{
deltaX = Left - targetRect.Left;
deltaX += RandomUtils.Random.NextDouble(0, targetRect.Right - Left);
deltaX = Math.Floor(deltaX);
}
}
return(new Tuple <double, double>(deltaX, deltaY));
}
public Tuple <double, double> GetOnscreenDelta(PageDimensions pageDimensions)
{
var currentViewPort = new BoundingClientRect
{
Top = pageDimensions.ScrollY,
Bottom = pageDimensions.ScrollY + pageDimensions.WindowHeight,
Left = pageDimensions.ScrollX,
Right = pageDimensions.ScrollX + pageDimensions.WindowWidth,
Width = pageDimensions.WindowWidth,
Height = pageDimensions.WindowHeight
};
return(GetDelta(currentViewPort));
}
public async Task <BoundingClientRect> GetBoundingClientRect(long nodeId)
{
var resolveNodeResponse = await Session.DOM.ResolveNode(new Dom.ResolveNodeCommand
{
NodeId = nodeId,
ObjectGroup = "Skrapr"
});
var boundingClientRectResponse = await m_session.Runtime.CallFunctionOn(new Runtime.CallFunctionOnCommand
{
ObjectId = resolveNodeResponse.Object.ObjectId,
FunctionDeclaration = "function() { return this.getBoundingClientRect(); }",
Silent = true,
UserGesture = false
});
if (boundingClientRectResponse.Result.Subtype == "error")
{
return(null);
}
var propertiesResponse = await m_session.Runtime.GetProperties(new Runtime.GetPropertiesCommand
{
ObjectId = boundingClientRectResponse.Result.ObjectId
});
var properties = propertiesResponse.Result;
var result = new BoundingClientRect()
{
Top = double.Parse(properties.First(p => p.Name == "top").Value.Description),
Right = double.Parse(properties.First(p => p.Name == "right").Value.Description),
Bottom = double.Parse(properties.First(p => p.Name == "bottom").Value.Description),
Left = double.Parse(properties.First(p => p.Name == "left").Value.Description),
Width = double.Parse(properties.First(p => p.Name == "width").Value.Description),
Height = double.Parse(properties.First(p => p.Name == "height").Value.Description)
};
//Cleanup.
var releaseResponse = await m_session.Runtime.ReleaseObject(new Runtime.ReleaseObjectCommand
{
ObjectId = boundingClientRectResponse.Result.ObjectId
});
return(result);
}
/// <summary>
/// Retrieves the position of the element relative to the document.
/// </summary>
/// <param name="nodeId"></param>
/// <returns></returns>
public async Task <BoundingClientRect> GetOffset(long nodeId)
{
var resolveNodeResponse = await Session.DOM.ResolveNode(new Dom.ResolveNodeCommand
{
NodeId = nodeId,
ObjectGroup = "Skrapr"
});
var boundingClientRectResponse = await m_session.Runtime.CallFunctionOn(new Runtime.CallFunctionOnCommand
{
ObjectId = resolveNodeResponse.Object.ObjectId,
FunctionDeclaration = @"function() {
var doc, docElem, rect, win, elem = this;
if ( !elem.getClientRects().length ) {
return { top: 0, bottom: 0, left: 0, right: 0, height: 0, width: 0 };
}
rect = elem.getBoundingClientRect();
doc = elem.ownerDocument;
docElem = doc.documentElement;
win = doc.defaultView;
return {
top: rect.top + win.pageYOffset - docElem.clientTop,
bottom: rect.bottom + win.pageYOffset - docElem.clientTop,
left: rect.left + win.pageXOffset - docElem.clientLeft,
right: rect.right + win.pageXOffset - docElem.clientLeft,
height: rect.height,
width: rect.width
};
}",
Silent = true,
UserGesture = false
});
if (boundingClientRectResponse.Result.Subtype == "error")
{
return(null);
}
var propertiesResponse = await m_session.Runtime.GetProperties(new Runtime.GetPropertiesCommand
{
ObjectId = boundingClientRectResponse.Result.ObjectId
});
var properties = propertiesResponse.Result;
var result = new BoundingClientRect()
{
Top = double.Parse(properties.First(p => p.Name == "top").Value.Description),
Right = double.Parse(properties.First(p => p.Name == "right").Value.Description),
Bottom = double.Parse(properties.First(p => p.Name == "bottom").Value.Description),
Left = double.Parse(properties.First(p => p.Name == "left").Value.Description),
Width = double.Parse(properties.First(p => p.Name == "width").Value.Description),
Height = double.Parse(properties.First(p => p.Name == "height").Value.Description)
};
//Cleanup.
var releaseResponse = await m_session.Runtime.ReleaseObject(new Runtime.ReleaseObjectCommand
{
ObjectId = boundingClientRectResponse.Result.ObjectId
});
return(result);
}
