/// <summary>
/// A factory that constructs an empty screen buffer of a correct size for the fromScreen
/// </summary>
/// <param name="fromScreen">The screen - only used to determine the needed width/height</param>
/// <returns>An empty snapshot buffer</returns>
public static ScreenSnapShot EmptyScreen(IScreenBuffer fromScreen)
{
ScreenSnapShot newThing = new ScreenSnapShot();
newThing.TopRow = fromScreen.TopRow;
newThing.CursorColumn = fromScreen.CursorColumnShow;
newThing.CursorRow = fromScreen.CursorRowShow;
newThing.RowCount = fromScreen.RowCount;
newThing.Buffer = new List<IScreenBufferLine>();
for (int i = 0; i < newThing.RowCount ; ++i)
newThing.Buffer.Add(new ScreenBufferLine(fromScreen.ColumnCount));
return newThing;
}
/// <summary>
/// A factory that constructs an empty screen buffer of a correct size for the fromScreen
/// </summary>
/// <param name="fromScreen">The screen - only used to determine the needed width/height</param>
/// <returns>An empty snapshot buffer</returns>
public static ScreenSnapShot EmptyScreen(IScreenBuffer fromScreen)
{
ScreenSnapShot newThing = new ScreenSnapShot();
newThing.TopRow = fromScreen.TopRow;
newThing.CursorColumn = fromScreen.CursorColumnShow;
newThing.CursorRow = fromScreen.CursorRowShow;
newThing.RowCount = fromScreen.RowCount;
newThing.Buffer = new List <IScreenBufferLine>();
for (int i = 0; i < newThing.RowCount; ++i)
{
newThing.Buffer.Add(new ScreenBufferLine(fromScreen.ColumnCount));
}
return(newThing);
}
/// <summary>
/// Make a copy of me for later diffing against.
/// Almost a deep copy.
/// </summary>
/// <returns>The new copy</returns>
public IScreenSnapShot DeepCopy()
{
ScreenSnapShot newCopy = new ScreenSnapShot
{
TopRow = TopRow,
CursorColumn = CursorColumn,
CursorRow = CursorRow,
RowCount = RowCount,
Buffer = new List<IScreenBufferLine>()
};
// This will probably reset the timestamps on the rows, but for our purposes that's actually fine - we call this
// when we want to get a fully sync'ed copy:
foreach (IScreenBufferLine line in Buffer)
{
ScreenBufferLine newLine = new ScreenBufferLine(line.Length);
newLine.ArrayCopyFrom(line.ToArray(), 0, 0);
newCopy.Buffer.Add(newLine);
}
return newCopy;
}
/// <summary>
/// Make a copy of me for later diffing against.
/// Almost a deep copy.
/// </summary>
/// <returns>The new copy</returns>
public IScreenSnapShot DeepCopy()
{
ScreenSnapShot newCopy = new ScreenSnapShot
{
TopRow = TopRow,
CursorColumn = CursorColumn,
CursorRow = CursorRow,
RowCount = RowCount,
Buffer = new List <IScreenBufferLine>()
};
// This will probably reset the timestamps on the rows, but for our purposes that's actually fine - we call this
// when we want to get a fully sync'ed copy:
foreach (IScreenBufferLine line in Buffer)
{
ScreenBufferLine newLine = new ScreenBufferLine(line.Length);
newLine.ArrayCopyFrom(line.ToArray(), 0, 0);
newCopy.Buffer.Add(newLine);
}
return(newCopy);
}
