public static void PageDown(TextEditorData data)
{
using (var undo = data.OpenUndoGroup()) {
int pageLines = (int)((data.VAdjustment.PageSize + ((int)data.VAdjustment.Value % data.LineHeight)) / data.LineHeight);
int visualLine = data.LogicalToVisualLine(data.Caret.Line);
visualLine += pageLines;
int line = System.Math.Min(data.VisualToLogicalLine(visualLine), data.Document.LineCount);
int offset = data.Document.LocationToOffset(line, data.Caret.Column);
ScrollActions.PageDown(data);
data.Caret.Offset = MoveCaretOutOfFolding(data, offset);
}
}
public static void PageUp(TextEditorData data)
{
int pageLines = (int)((data.VAdjustment.PageSize + ((int)data.VAdjustment.Value % data.LineHeight)) / data.LineHeight);
int visualLine = data.LogicalToVisualLine(data.Caret.Line);
visualLine -= pageLines;
int line = System.Math.Max(data.VisualToLogicalLine(visualLine), DocumentLocation.MinLine);
int offset = data.LocationToOffset(line, data.Caret.Column);
ScrollActions.PageUp(data);
data.Caret.Offset = MoveCaretOutOfFolding(data, offset);
}