/// <remarks>
/// Executes this edit action
/// </remarks>
/// <param name="editor">The <see cref="Ieditor"/> which is used for callback purposes</param>
public override void Execute(TextBoxControl editor)
{
int curLineNr = editor.Caret.Line;
int iPageLines = editor.ClientSize.Height / editor.FontHeight;
int requestedLineNumber = Math.Max((curLineNr - iPageLines), 1);
if (curLineNr != requestedLineNumber)
{
int lineWidth = editor.GetLineWidth(requestedLineNumber);
if (editor.CalColumnLocation(editor.Caret.Position.Y, editor.Caret.Position.X) > lineWidth)
{
if (editor.Caret.Position.Y > 1)
{
editor.Caret.Position = new TextLocation(editor.CalColumnNumber(requestedLineNumber, lineWidth), requestedLineNumber);
editor.Caret.UpdateCaretPosition();
}
}
else
{
int oldLocation = editor.CalColumnLocation(editor.Caret.Position.Y, editor.Caret.Position.X);
int location = oldLocation > 0 ? oldLocation : 0;
editor.Caret.Position = new TextLocation(editor.CalColumnNumber(requestedLineNumber, location), requestedLineNumber);
editor.Caret.UpdateCaretPosition();
}
if (editor.VerticalScroll.Visible)
{
editor.VerticalScroll.Value = Math.Max(0, editor.VerticalScroll.Value - iPageLines * editor.FontHeight);
editor.PerformLayout();
}
}
}
public override void Execute(TextBoxControl editor)
{
if (editor.Caret.Position.X == 0)
{
if (editor.Caret.Position.Y > 1)
{
int lineWidth = editor.GetLineWidth(editor.Caret.Position.Y - 1);
if (lineWidth > editor.DrawRectangle.Width && editor.HorizontalScroll.Visible)
{
editor.HorizontalScroll.Value = Math.Min(editor.HorizontalScroll.Maximum, editor.HorizontalScroll.Value + lineWidth - editor.DrawRectangle.Width);
}
// 由于光标的起点为光标顶端点，在计算相对于垂直滚动条位置时需减2
if ((editor.Caret.Position.Y - 2) * editor.FontHeight < editor.VerticalScroll.Value && editor.VerticalScroll.Visible)
{
editor.VerticalScroll.Value = Math.Max(editor.VerticalScroll.Minimum, editor.VerticalScroll.Value - editor.FontHeight);
}
editor.PerformLayout();
editor.Caret.Position = new TextLocation(editor.CalColumnNumber(editor.Caret.Position.Y - 1, lineWidth), editor.Caret.Position.Y - 1);
editor.Caret.UpdateCaretPosition();
}
}
else
{
int location = editor.GetMovePositionByKey(true);
int hScroll2 = editor.HorizontalScroll.Value - editor.DrawRectangle.Width;
if (location < editor.HorizontalScroll.Value && editor.HorizontalScroll.Visible)
{
editor.HorizontalScroll.Value = Math.Max(editor.VerticalScroll.Minimum, hScroll2 > 0 ? hScroll2 : 0);
}
editor.PerformLayout();
editor.Caret.Position = new TextLocation(editor.CalColumnNumber(editor.Caret.Position.Y, location), editor.Caret.Position.Y);
editor.Caret.UpdateCaretPosition();
}
}
public override void Execute(TextBoxControl editor)
{
if (editor.Caret.Position.Y == editor.LineCount)
{
return;
}
int lineWidth = editor.GetLineWidth(editor.Caret.Position.Y + 1);
if (editor.CalColumnLocation(editor.Caret.Position.Y, editor.Caret.Position.X) > lineWidth)
{
editor.Caret.Position = new TextLocation(editor.CalColumnNumber(editor.Caret.Position.Y + 1, lineWidth), editor.Caret.Position.Y + 1);
editor.Caret.UpdateCaretPosition();
}
else
{
int oldLocation = editor.CalColumnLocation(editor.Caret.Position.Y, editor.Caret.Position.X);
int location = oldLocation > 0 ? oldLocation : 0;
editor.Caret.Position = new TextLocation(editor.CalColumnNumber(editor.Caret.Position.Y + 1, location), editor.Caret.Position.Y + 1);
editor.Caret.UpdateCaretPosition();
}
if (editor.VerticalScroll.Visible && editor.VerticalScroll.Value + editor.DrawRectangle.Height < (editor.Caret.Line - 1) * editor.FontHeight)
{
editor.VerticalScroll.Value = Math.Min(editor.VerticalScroll.Maximum, editor.VerticalScroll.Value + editor.FontHeight);
editor.PerformLayout();
}
}
public override void Execute(TextBoxControl editor)
{
int lineWidth = editor.GetLineWidth(editor.Caret.Position.Y);
if (lineWidth <= editor.CalColumnLocation(editor.Caret.Position.Y, editor.Caret.Position.X) && editor.Caret.Position.Y != editor.LineCount)
{
if (editor.HorizontalScroll.Value != 0 && editor.HorizontalScroll.Visible)
{
editor.HorizontalScroll.Value = 0;
}
if ((editor.Caret.Position.Y + 1) * editor.FontHeight > editor.DrawRectangle.Height && editor.VerticalScroll.Visible)
{
editor.VerticalScroll.Value = Math.Min(editor.VerticalScroll.Maximum, editor.VerticalScroll.Value + editor.FontHeight);
}
editor.PerformLayout();
editor.Caret.Position = new TextLocation(0, editor.Caret.Position.Y + 1);
editor.Caret.UpdateCaretPosition();
}
else
{
int location = editor.GetMovePositionByKey(false);
if (location > editor.DrawRectangle.Width && location > editor.HorizontalScroll.Value + editor.DrawRectangle.Width && editor.HorizontalScroll.Visible)
{
editor.HorizontalScroll.Value = Math.Min(editor.VerticalScroll.Maximum, editor.HorizontalScroll.Value + editor.DrawRectangle.Width);
}
editor.PerformLayout();
editor.Caret.Position = new TextLocation(editor.CalColumnNumber(editor.Caret.Position.Y, location), editor.Caret.Position.Y);
editor.Caret.UpdateCaretPosition();
}
}
public override void Execute(TextBoxControl editor)
{
int lineWidth = editor.GetLineWidth(editor.Caret.Line);
int colNum = editor.CalColumnNumber(editor.Caret.Line, lineWidth);
editor.Caret.Position = new TextLocation(colNum, editor.Caret.Line);
editor.Caret.UpdateCaretPosition();
if (lineWidth > editor.DrawRectangle.Width && editor.HorizontalScroll.Visible)
{
editor.HorizontalScroll.Value = Math.Min(editor.HorizontalScroll.Maximum, editor.HorizontalScroll.Value + lineWidth - editor.DrawRectangle.Width);
editor.PerformLayout();
}
}