public static void PageUp(HexEditorData data)
{
data.VAdjustment.Value = System.Math.Max(data.VAdjustment.LowerValue, data.VAdjustment.Value - data.VAdjustment.PageSize);
int pageLines = (int)(data.VAdjustment.PageSize + ((int)data.VAdjustment.Value % data.LineHeight) / data.LineHeight);
data.Caret.Offset = (long)System.Math.Max(0, data.Caret.Offset - data.BytesInRow * pageLines);
}
public static void PageDown(HexEditorData data)
{
data.VAdjustment.Value = System.Math.Min(data.VAdjustment.UpperValue - data.VAdjustment.PageSize, data.VAdjustment.Value + data.VAdjustment.PageSize);
int pageLines = (int)(data.VAdjustment.PageSize + ((int)data.VAdjustment.Value % data.LineHeight) / data.LineHeight);
data.Caret.Offset = (long)System.Math.Min(data.Length, data.Caret.Offset + data.BytesInRow * pageLines);
}
public static void SelectAll(HexEditorData data)
{
data.Caret.PreserveSelection = true;
CaretMoveActions.ToDocumentEnd(data);
data.MainSelection = new Selection(0, data.Length);
data.Caret.PreserveSelection = false;
}
public static void StartLineSelection(HexEditorData data)
{
data.Caret.PreserveSelection = true;
if (!data.IsSomethingSelected)
{
data.MainSelection = new Selection(data.Caret.Offset, data.Caret.Offset);
}
}
public void Dispose()
{
if (data != null)
{
data.ByteBuffer.EndAtomicUndo();
data = null;
}
}
public UndoGroup(HexEditorData data)
{
if (data == null)
{
throw new ArgumentNullException("data");
}
this.data = data;
data.ByteBuffer.BeginAtomicUndo();
}
public static void StartSelection(HexEditorData data)
{
data.Caret.PreserveSelection = true;
if (!data.IsSomethingSelected)
{
data.MainSelection = new Selection(data.Caret.Offset, data.Caret.Offset);
}
// data.Caret.AutoScrollToCaret = false;
}
public static void Select(HexEditorData data, Action <HexEditorData> caretMoveAction)
{
PositionChangedHandler handler = new PositionChangedHandler(data);
data.Caret.OffsetChanged += handler.DataCaretPositionChanged;
StartSelection(data);
caretMoveAction(data);
data.Caret.OffsetChanged -= handler.DataCaretPositionChanged;
data.Caret.AutoScrollToCaret = true;
data.Caret.PreserveSelection = false;
}
public static void Backspace(HexEditorData data)
{
if (data.IsSomethingSelected)
{
data.DeleteSelection();
return;
}
if (data.Caret.Offset == 0)
{
return;
}
data.ByteBuffer.Remove(data.Caret.Offset - 1, 1);
data.Caret.Offset--;
}
public static void Delete(HexEditorData data)
{
if (data.IsSomethingSelected)
{
data.DeleteSelection();
return;
}
if (data.Caret.Offset >= data.Length)
{
return;
}
data.ByteBuffer.Remove(data.Caret.Offset, 1);
data.UpdateLine(data.Caret.Line);
}
public static void Right(HexEditorData data)
{
if (!data.Caret.InTextEditor && data.Caret.SubPosition < data.Caret.MaxSubPosition)
{
data.Caret.SubPosition++;
return;
}
long newOffset = System.Math.Min(data.Length, data.Caret.Offset + 1);
if (newOffset != data.Caret.Offset)
{
data.Caret.Offset = newOffset;
}
}
void InsertCharacter(uint unicodeChar)
{
char ch = (char)unicodeChar;
if (HexEditorData.IsSomethingSelected)
{
HexEditorData.DeleteSelection();
}
if (HexEditorData.Caret.InTextEditor)
{
if ((char.IsLetterOrDigit(ch) || char.IsPunctuation(ch) || ch == ' ') && unicodeChar <= 255)
{
if (HexEditorData.Caret.IsInsertMode)
{
HexEditorData.Insert(HexEditorData.Caret.Offset, (byte)unicodeChar);
}
else
{
HexEditorData.Replace(HexEditorData.Caret.Offset, 1, (byte)unicodeChar);
}
Editor.Margins.ForEach(margin => margin.PurgeLayoutCache());
CaretMoveActions.Right(HexEditorData);
}
}
else
{
string hex = "0123456789ABCDEF";
int idx = hex.IndexOf(char.ToUpper(ch));
if (idx >= 0)
{
if (HexEditorData.Caret.Offset >= HexEditorData.Length)
{
HexEditorData.Insert(HexEditorData.Length, 0);
}
if (HexEditorData.Caret.IsInsertMode && HexEditorData.Caret.SubPosition == 0)
{
HexEditorData.Insert(HexEditorData.Caret.Offset, (byte)(idx * 0x10));
}
else
{
byte cur = HexEditorData.GetByte(HexEditorData.Caret.Offset);
int newByte = HexEditorData.Caret.SubPosition == 0 ? cur & 0xF | idx * 0x10 : cur & 0xF0 | idx;
HexEditorData.Replace(HexEditorData.Caret.Offset, 1, (byte)newByte);
}
Editor.Margins.ForEach(margin => margin.PurgeLayoutCache());
CaretMoveActions.Right(HexEditorData);
}
}
}
public static void Toggle(HexEditorData data)
{
long line = data.Caret.Offset / data.BytesInRow;
foreach (long bookmark in data.Bookmarks)
{
if (line * data.BytesInRow <= bookmark && bookmark < line * data.BytesInRow + data.BytesInRow)
{
data.Bookmarks.Remove(bookmark);
return;
}
}
data.Bookmarks.Add(data.Caret.Offset);
data.UpdateMargin(typeof(IconMargin), data.Caret.Line);
}
public static void Left(HexEditorData data)
{
if (!data.Caret.InTextEditor && data.Caret.SubPosition > 0)
{
data.Caret.SubPosition--;
return;
}
long newOffset = System.Math.Max(0, data.Caret.Offset - 1);
if (newOffset != data.Caret.Offset)
{
data.Caret.Offset = newOffset;
data.Caret.SubPosition = data.Caret.MaxSubPosition;
}
}
public static void GotoPrevious(HexEditorData data)
{
data.Bookmarks.Sort();
long cur = -1;
for (int i = 0; i < data.Bookmarks.Count; i++)
{
if (data.Bookmarks[i] < data.Caret.Offset && cur < data.Bookmarks[i])
{
cur = data.Bookmarks[i];
}
}
if (cur == -1 && data.Bookmarks.Count > 0)
{
cur = data.Bookmarks[data.Bookmarks.Count - 1];
}
if (cur != -1)
{
data.Caret.Offset = cur;
data.UpdateLine(data.Caret.Offset / data.BytesInRow);
}
}
public static void GotoNext(HexEditorData data)
{
data.Bookmarks.Sort();
long cur = long.MaxValue;
for (int i = 0; i < data.Bookmarks.Count; i++)
{
if (data.Bookmarks[i] > data.Caret.Offset && cur > data.Bookmarks[i])
{
cur = data.Bookmarks[i];
}
}
if (cur == long.MaxValue && data.Bookmarks.Count > 0)
{
cur = data.Bookmarks[0];
}
if (cur != long.MaxValue)
{
data.Caret.Offset = cur;
data.UpdateLine(data.Caret.Offset / data.BytesInRow);
}
}
public static void EndSelection(HexEditorData data)
{
data.ExtendSelectionTo(data.Caret.Offset);
// data.Caret.AutoScrollToCaret = true;
data.Caret.PreserveSelection = false;
}
public static void Redo(HexEditorData data)
{
data.ByteBuffer.Redo();
}
public static void SwitchCaretMode(HexEditorData data)
{
data.Caret.IsInsertMode = !data.Caret.IsInsertMode;
data.UpdateLine(data.Caret.Line);
}
public HexEditor()
{
BackgroundColor = Color.FromBytes(0, 0, 0);
CanGetFocus = true;
HexEditorData = new HexEditorData();
HexEditorData.EditMode = new SimpleEditMode();
HexEditorData.Caret.Changed += delegate {
if (!HexEditorData.Caret.PreserveSelection)
{
HexEditorData.ClearSelection();
}
RequestResetCaretBlink();
if (HexEditorData.Caret.AutoScrollToCaret)
{
ScrollToCaret();
}
RepaintLine(HexEditorData.Caret.Line);
};
HexEditorData.Caret.OffsetChanged += delegate(object sender, CaretLocationEventArgs e) {
if (!HexEditorData.Caret.PreserveSelection)
{
HexEditorData.ClearSelection();
}
RequestResetCaretBlink();
if (HexEditorData.Caret.AutoScrollToCaret)
{
ScrollToCaret();
}
RepaintLine(e.OldOffset / BytesInRow);
RepaintLine(HexEditorData.Caret.Line);
};
HexEditorData.Undone += delegate {
PurgeLayoutCaches();
Repaint();
};
HexEditorData.Redone += delegate {
PurgeLayoutCaches();
Repaint();
};
HexEditorData.SelectionChanged += HexEditorDataSelectionChanged;
HexEditorData.Replaced += delegate(object sender, ReplaceEventArgs e) {
if (e.Count > 0)
{
PurgeLayoutCaches();
Repaint();
}
};
style = new HexEditorStyle();
iconMargin = new IconMargin(this);
margins.Add(iconMargin);
gutterMargin = new GutterMargin(this);
margins.Add(gutterMargin);
hexEditorMargin = new HexEditorMargin(this);
margins.Add(hexEditorMargin);
textEditorMargin = new TextEditorMargin(this);
margins.Add(textEditorMargin);
margins.Add(new EmptySpaceMargin(this));
HexEditorData.UpdateRequested += delegate {
HexEditorData.Updates.ForEach(update => update.AddRedraw(this));
HexEditorData.Updates.Clear();
};
Options = HexEditorOptions.DefaultOptions;
Options.Changed += OptionsChanged;
}
public PositionChangedHandler(HexEditorData data)
{
this.data = data;
}
public static void Up(HexEditorData data)
{
data.Caret.Offset = System.Math.Max(0, data.Caret.Offset - data.BytesInRow);
}
public static void ToDocumentEnd(HexEditorData data)
{
data.Caret.Offset = data.Length - 1;
}
public static void ToDocumentStart(HexEditorData data)
{
data.Caret.Offset = 0;
}
public static void LineHome(HexEditorData data)
{
data.Caret.Offset -= data.Caret.Offset % data.BytesInRow;
data.Caret.SubPosition = 0;
}
public static void LineEnd(HexEditorData data)
{
data.Caret.Offset = System.Math.Min(data.Length - 1, data.Caret.Offset + data.BytesInRow - 1 - data.Caret.Offset % data.BytesInRow);
data.Caret.SubPosition = 0;
}
public static void Up(HexEditorData data)
{
data.VAdjustment.Value = System.Math.Max(data.VAdjustment.LowerValue,
data.VAdjustment.Value - data.VAdjustment.StepIncrement);
}
public static void SwitchSide(HexEditorData data)
{
data.Caret.InTextEditor = !data.Caret.InTextEditor;
data.UpdateLine(data.Caret.Line);
}
public static void Down(HexEditorData data)
{
data.VAdjustment.Value = System.Math.Min(data.VAdjustment.UpperValue - data.VAdjustment.PageSize,
data.VAdjustment.Value + data.VAdjustment.StepIncrement);
}
public static void Down(HexEditorData data)
{
data.Caret.Offset = System.Math.Min(data.Length, data.Caret.Offset + data.BytesInRow);
}
