public static List <Rectangle> GetTextLineRects(Bitmap chatImage, int threshold = 5)
{
using (var finder = new TextLinesFinder(chatImage, threshold))
{
var lines = finder.GetTextLines();
if (lines.Count > 0)
{
lines.RemoveAt(0);
}
return(lines);
}
}
public void UpdateFrame(Bitmap chatImage)
{
var currentFrameLines = TextLinesFinder.GetTextLineRects(chatImage);
if (this.previousFrame != null)
{
if (Utils.AreSimilar(this.previousFrame, chatImage))
{
this.NewLines = new ChatLineInfo[0];
}
else
{
var previousLastLinePositionInNewFrame = this.previousFrameLastLine != Rectangle.Empty ? Utils.FindSimilar(this.previousFrame, this.previousFrameLastLine, chatImage) : -1;
if (previousLastLinePositionInNewFrame == -1)
{
this.NewLines = currentFrameLines.Select(r => new ChatLineInfo(chatImage, r)).ToArray();
}
else
{
var previousFrameBottom = previousLastLinePositionInNewFrame + this.previousFrameLastLine.Height;
this.NewLines = currentFrameLines.Where(l => l.Y > previousFrameBottom).Select(r => new ChatLineInfo(chatImage, r)).ToArray();
}
}
}
else
{
this.NewLines = this.onlyNewMessages ? new ChatLineInfo[0] : currentFrameLines.Select(r => new ChatLineInfo(chatImage, r)).ToArray();
}
if (this.previousFrame != null)
{
this.previousFrame.Dispose();
}
this.previousFrame = chatImage;
if (currentFrameLines.Count > 0)
{
this.previousFrameLastLine = currentFrameLines[currentFrameLines.Count - 1];
}
else
{
this.previousFrameLastLine = Rectangle.Empty;
}
}
