public void HostInvokeKeyDown(UIKeys keys)
{
_isKeyDown = true;
switch (keys)
{
case UIKeys.Delete:
_line.DoDelete();
break;
case UIKeys.Back:
_line.DoBackspace();
break;
case UIKeys.Home:
_line.DoHome();
break;
case UIKeys.End:
_line.DoEnd();
break;
case UIKeys.Left:
_line.DoLeft();
break;
case UIKeys.Right:
_line.DoRight();
break;
}
UpdateOutput();
}
internal static void NotifyKeyDown(TextSurfaceEventListener listener, UIKeys key)
{
if (listener.KeyDown != null)
{
listener.KeyDown(listener, new TextDomEventArgs(key));
}
}
internal static bool NotifyPreviewArrow(TextSurfaceEventListener listener, UIKeys key)
{
if (listener.PreviewArrowKeyDown != null)
{
TextDomEventArgs e = new TextDomEventArgs(key);
listener.PreviewArrowKeyDown(listener, e);
return(e.PreventDefault);
}
return(false);
}
//#if DEBUG
// static int dbug_preview_dialogKey_count = 0;
//#endif
public bool HandleProcessDialogKey(UIKeys keyData)
{
//#if DEBUG
// System.Diagnostics.Debug.WriteLine("prev_dlgkey" + (dbug_preview_dialogKey_count++));
//#endif
_canvasViewport.FullMode = false;
_keyEventArgs.SetEventInfo((uint)keyData, false, false, false, UIEventName.ProcessDialogKey);//f-f-f will be set later
bool result = _topWinEventRoot.RootProcessDialogKey(_keyEventArgs);
if (result)
{
PrepareRenderAndFlushAccumGraphics();
}
return(result);
}
//
public override bool HandleProcessDialogKey(UIKeyEventArgs e)
{
UIKeys keyData = (UIKeys)e.KeyData;
SetCaretVisible(true);
if (_isInVerticalPhase && (keyData != UIKeys.Up || keyData != UIKeys.Down))
{
_isInVerticalPhase = false;
}
switch (e.KeyCode)
{
case UIKeys.Escape:
case UIKeys.End:
case UIKeys.Home:
{
if (_textSurfaceEventListener != null)
{
return(TextSurfaceEventListener.NotifyPreviewDialogKeyDown(_textSurfaceEventListener, e));
}
return(false);
}
case UIKeys.Tab:
{
if (_textSurfaceEventListener != null &&
TextSurfaceEventListener.NotifyPreviewDialogKeyDown(_textSurfaceEventListener, e))
{
return(true);
}
//
DoTab(); //default do tab
return(true);
}
case UIKeys.Return:
{
if (_textSurfaceEventListener != null &&
TextSurfaceEventListener.NotifyPreviewEnter(_textSurfaceEventListener, e))
{
return(true);
}
if (_isEditable)
{
if (_isMultiLine)
{
if (_editSession.SelectionRange != null)
{
InvalidateGraphicOfCurrentSelectionArea();
}
if (_editSession.SelectionRange != null)
{
//this selection range will be remove first
}
int lineBeforeSplit = _editSession.CurrentLineNumber;
int lineCharBeforeSplit = _editSession.CurrentLineCharIndex;
_editSession.SplitCurrentLineIntoNewLine();
if (_textSurfaceEventListener != null)
{
var splitEventE = new SplitToNewLineEventArgs();
splitEventE.LineNumberBeforeSplit = lineBeforeSplit;
splitEventE.LineCharIndexBeforeSplit = lineCharBeforeSplit;
TextSurfaceEventListener.NofitySplitNewLine(_textSurfaceEventListener, splitEventE);
}
Rectangle lineArea = _editSession.CurrentLineArea;
if (lineArea.Bottom > this.ViewportBottom)
{
ScrollOffset(0, lineArea.Bottom - this.ViewportBottom);
}
else
{
InvalidateGraphicOfCurrentLineArea();
}
EnsureCaretVisible();
}
else
{
if (_textSurfaceEventListener != null)
{
TextSurfaceEventListener.NotifyKeyDownOnSingleLineText(_textSurfaceEventListener, e);
}
}
}
return(true);
}
case UIKeys.Left:
{
if (_textSurfaceEventListener != null &&
TextSurfaceEventListener.NotifyPreviewArrow(_textSurfaceEventListener, e))
{
return(true);
}
InvalidateGraphicOfCurrentLineArea();
if (!e.Shift)
{
_editSession.CancelSelect();
}
else
{
_editSession.StartSelectIfNoSelection();
}
Point currentCaretPos = Point.Empty;
if (!_isMultiLine)
{
if (!_editSession.IsOnStartOfLine)
{
#if DEBUG
Point prvCaretPos = _editSession.CaretPos;
#endif
_editSession.TryMoveCaretBackward();
currentCaretPos = _editSession.CaretPos;
}
}
else
{
if (_editSession.IsOnStartOfLine)
{
_editSession.TryMoveCaretBackward();
currentCaretPos = _editSession.CaretPos;
}
else
{
if (!_editSession.IsOnStartOfLine)
{
#if DEBUG
Point prvCaretPos = _editSession.CaretPos;
#endif
_editSession.TryMoveCaretBackward();
currentCaretPos = _editSession.CaretPos;
}
}
}
//-------------------
if (e.Shift)
{
_editSession.EndSelectIfNoSelection();
}
//-------------------
EnsureCaretVisible();
if (_textSurfaceEventListener != null)
{
TextSurfaceEventListener.NotifyArrowKeyCaretPosChanged(_textSurfaceEventListener, e.KeyCode);
}
return(true);
}
case UIKeys.Right:
{
if (_textSurfaceEventListener != null &&
TextSurfaceEventListener.NotifyPreviewArrow(_textSurfaceEventListener, e))
{
return(true);
}
InvalidateGraphicOfCurrentLineArea();
if (!e.Shift)
{
_editSession.CancelSelect();
}
else
{
_editSession.StartSelectIfNoSelection();
}
Point currentCaretPos = Point.Empty;
if (!_isMultiLine)
{
#if DEBUG
Point prvCaretPos = _editSession.CaretPos;
#endif
_editSession.TryMoveCaretForward();
currentCaretPos = _editSession.CaretPos;
}
else
{
if (_editSession.IsOnEndOfLine)
{
_editSession.TryMoveCaretForward();
currentCaretPos = _editSession.CaretPos;
}
else
{
#if DEBUG
Point prvCaretPos = _editSession.CaretPos;
#endif
_editSession.TryMoveCaretForward();
currentCaretPos = _editSession.CaretPos;
}
}
//-------------------
if (e.Shift)
{
_editSession.EndSelectIfNoSelection();
}
//-------------------
EnsureCaretVisible();
if (_textSurfaceEventListener != null)
{
TextSurfaceEventListener.NotifyArrowKeyCaretPosChanged(_textSurfaceEventListener, keyData);
}
return(true);
}
case UIKeys.PageUp:
{
//similar to arrow up
if (_textSurfaceEventListener != null &&
TextSurfaceEventListener.NotifyPreviewDialogKeyDown(_textSurfaceEventListener, e))
{
return(true);
}
if (_isMultiLine)
{
if (!_isInVerticalPhase)
{
_isInVerticalPhase = true;
_verticalExpectedCharIndex = _editSession.CharIndex;
}
//----------------------------
if (!e.Shift)
{
_editSession.CancelSelect();
}
else
{
_editSession.StartSelectIfNoSelection();
}
//----------------------------
//approximate line per viewport
int line_per_viewport = Height / _editSession.CurrentLineArea.Height;
if (line_per_viewport > 1)
{
if (_editSession.CurrentLineNumber - line_per_viewport < 0)
{
//move to first line
_editSession.CurrentLineNumber = 0;
}
else
{
_editSession.CurrentLineNumber -= line_per_viewport;
}
}
if (_verticalExpectedCharIndex > _editSession.CurrentLineCharCount - 1)
{
_editSession.TryMoveCaretTo(_editSession.CurrentLineCharCount);
}
else
{
_editSession.TryMoveCaretTo(_verticalExpectedCharIndex);
}
//----------------------------
if (e.Shift)
{
_editSession.EndSelectIfNoSelection();
}
Rectangle lineArea = _editSession.CurrentLineArea;
if (lineArea.Top < ViewportTop)
{
ScrollOffset(0, lineArea.Top - ViewportTop);
}
else
{
EnsureCaretVisible();
InvalidateGraphicOfCurrentLineArea();
}
}
else
{
}
if (_textSurfaceEventListener != null)
{
TextSurfaceEventListener.NotifyArrowKeyCaretPosChanged(_textSurfaceEventListener, keyData);
}
return(true);
}
case UIKeys.PageDown:
{
//similar to arrow down
if (_textSurfaceEventListener != null &&
TextSurfaceEventListener.NotifyPreviewDialogKeyDown(_textSurfaceEventListener, e))
{
return(true);
}
if (_isMultiLine)
{
if (!_isInVerticalPhase)
{
_isInVerticalPhase = true;
_verticalExpectedCharIndex = _editSession.CharIndex;
}
//----------------------------
if (!e.Shift)
{
_editSession.CancelSelect();
}
else
{
_editSession.StartSelectIfNoSelection();
}
//----------------------------
int line_per_viewport = Height / _editSession.CurrentLineArea.Height;
if (_editSession.CurrentLineNumber + line_per_viewport < _editSession.LineCount)
{
_editSession.CurrentLineNumber += line_per_viewport;
}
else
{
//move to last line
_editSession.CurrentLineNumber = _editSession.LineCount - 1;
}
if (_verticalExpectedCharIndex > _editSession.CurrentLineCharCount - 1)
{
_editSession.TryMoveCaretTo(_editSession.CurrentLineCharCount);
}
else
{
_editSession.TryMoveCaretTo(_verticalExpectedCharIndex);
}
//----------------------------
if (e.Shift)
{
_editSession.EndSelectIfNoSelection();
}
//----------------------------
Rectangle lineArea = _editSession.CurrentLineArea;
if (lineArea.Bottom > this.ViewportBottom)
{
ScrollOffset(0, lineArea.Bottom - this.ViewportBottom);
}
else
{
InvalidateGraphicOfCurrentLineArea();
}
}
EnsureCaretVisible();
if (_textSurfaceEventListener != null)
{
TextSurfaceEventListener.NotifyArrowKeyCaretPosChanged(_textSurfaceEventListener, keyData);
}
return(true);
}
case UIKeys.Down:
{
if (_textSurfaceEventListener != null &&
TextSurfaceEventListener.NotifyPreviewArrow(_textSurfaceEventListener, e))
{
return(true);
}
if (_isMultiLine)
{
if (!_isInVerticalPhase)
{
_isInVerticalPhase = true;
_verticalExpectedCharIndex = _editSession.CharIndex;
}
//----------------------------
if (!e.Shift)
{
_editSession.CancelSelect();
}
else
{
_editSession.StartSelectIfNoSelection();
}
//----------------------------
_editSession.CurrentLineNumber++;
if (_verticalExpectedCharIndex > _editSession.CurrentLineCharCount - 1)
{
_editSession.TryMoveCaretTo(_editSession.CurrentLineCharCount);
}
else
{
_editSession.TryMoveCaretTo(_verticalExpectedCharIndex);
}
//----------------------------
if (e.Shift)
{
_editSession.EndSelectIfNoSelection();
}
//----------------------------
Rectangle lineArea = _editSession.CurrentLineArea;
if (lineArea.Bottom > this.ViewportBottom)
{
ScrollOffset(0, lineArea.Bottom - this.ViewportBottom);
}
else
{
InvalidateGraphicOfCurrentLineArea();
}
}
EnsureCaretVisible();
if (_textSurfaceEventListener != null)
{
TextSurfaceEventListener.NotifyArrowKeyCaretPosChanged(_textSurfaceEventListener, keyData);
if (!_isMultiLine)
{
TextSurfaceEventListener.NotifyKeyDownOnSingleLineText(_textSurfaceEventListener, e);
}
}
return(true);
}
case UIKeys.Up:
{
if (_textSurfaceEventListener != null &&
TextSurfaceEventListener.NotifyPreviewArrow(_textSurfaceEventListener, e))
{
return(true);
}
if (_isMultiLine)
{
if (!_isInVerticalPhase)
{
_isInVerticalPhase = true;
_verticalExpectedCharIndex = _editSession.CharIndex;
}
//----------------------------
if (!e.Shift)
{
_editSession.CancelSelect();
}
else
{
_editSession.StartSelectIfNoSelection();
}
//----------------------------
_editSession.CurrentLineNumber--;
if (_verticalExpectedCharIndex > _editSession.CurrentLineCharCount - 1)
{
_editSession.TryMoveCaretTo(_editSession.CurrentLineCharCount);
}
else
{
_editSession.TryMoveCaretTo(_verticalExpectedCharIndex);
}
//----------------------------
if (e.Shift)
{
_editSession.EndSelectIfNoSelection();
}
Rectangle lineArea = _editSession.CurrentLineArea;
if (lineArea.Top < ViewportTop)
{
ScrollOffset(0, lineArea.Top - ViewportTop);
}
else
{
EnsureCaretVisible();
InvalidateGraphicOfCurrentLineArea();
}
}
else
{
}
if (_textSurfaceEventListener != null)
{
TextSurfaceEventListener.NotifyArrowKeyCaretPosChanged(_textSurfaceEventListener, keyData);
if (!_isMultiLine)
{
TextSurfaceEventListener.NotifyKeyDownOnSingleLineText(_textSurfaceEventListener, e);
}
}
return(true);
}
default:
{
return(false);
}
}
}
public override void HandleKeyDown(UIKeyEventArgs e)
{
this.SetCaretVisible(true);
if (!e.HasKeyData)
{
return;
}
switch (e.KeyCode)
{
case UIKeys.Home:
{
this.DoHome(e.Shift);
}
break;
case UIKeys.End:
{
this.DoEnd(e.Shift);
}
break;
case UIKeys.Back:
{
if (_isEditable)
{
if (_editSession.SelectionRange != null)
{
InvalidateGraphicOfCurrentSelectionArea();
}
else
{
InvalidateGraphicOfCurrentLineArea();
}
if (_textSurfaceEventListener == null)
{
_editSession.DoBackspace();
}
else
{
if (!TextSurfaceEventListener.NotifyPreviewBackSpace(_textSurfaceEventListener, e) &&
_editSession.DoBackspace())
{
TextSurfaceEventListener.NotifyCharactersRemoved(_textSurfaceEventListener,
new TextDomEventArgs(_editSession._updateJustCurrentLine));
}
}
EnsureCaretVisible();
}
}
break;
case UIKeys.Delete:
{
if (_isEditable)
{
if (_editSession.SelectionRange != null)
{
InvalidateGraphicOfCurrentSelectionArea();
}
else
{
InvalidateGraphicOfCurrentLineArea();
}
if (_textSurfaceEventListener == null)
{
_editSession.DoDelete();
}
else
{
VisualSelectionRangeSnapShot delpart = _editSession.DoDelete();
TextSurfaceEventListener.NotifyCharactersRemoved(_textSurfaceEventListener,
new TextDomEventArgs(_editSession._updateJustCurrentLine, delpart));
}
EnsureCaretVisible();
}
}
break;
default:
{
if (_textSurfaceEventListener != null)
{
UIKeys keycode = e.KeyCode;
if (keycode >= UIKeys.F1 && keycode <= UIKeys.F12)
{
InvalidateGraphicOfCurrentSelectionArea();
TextSurfaceEventListener.NotifyFunctionKeyDown(_textSurfaceEventListener, keycode);
EnsureCaretVisible();
}
}
}
break;
}
if (e.HasKeyData && e.Ctrl)
{
switch (e.KeyCode)
{
case UIKeys.A:
{
//select all
//....
this.CurrentLineNumber = 0;
//start select to end
DoHome(false); //1st simulate
DoHome(true); //2nd
this.CurrentLineNumber = this.LineCount - 1;
DoEnd(true); //
}
break;
case UIKeys.C:
{
using (StringBuilderPool <TempTextLineCopyContext> .GetFreeStringBuilder(out StringBuilder stBuilder))
{
_editSession.CopySelectedTextToPlainText(stBuilder);
if (stBuilder != null)
{
if (stBuilder.Length == 0)
{
Clipboard.Clear();
}
else
{
Clipboard.SetText(stBuilder.ToString());
}
}
}
}
break;
case UIKeys.V:
{
if (_isEditable && Clipboard.ContainsUnicodeText())
{
//1. we need to parse multi-line to single line
//this may need text-break services
_editSession.AddTextToCurrentLine(PlainTextDocumentHelper.CreatePlainTextDocument(Clipboard.GetUnicodeText()));
EnsureCaretVisible();
}
}
break;
case UIKeys.X:
{
if (_isEditable && _editSession.SelectionRange != null)
{
InvalidateGraphicOfCurrentSelectionArea();
using (StringBuilderPool <TempTextLineCopyContext> .GetFreeStringBuilder(out StringBuilder stBuilder))
{
_editSession.CopySelectedTextToPlainText(stBuilder);
if (stBuilder != null)
{
Clipboard.SetText(stBuilder.ToString());
}
_editSession.DoDelete();
EnsureCaretVisible();
}
}
}
break;
case UIKeys.Z:
{
if (_isEditable)
{
_editSession.UndoLastAction();
EnsureCaretVisible();
}
}
break;
case UIKeys.Y:
{
if (_isEditable)
{
_editSession.ReverseLastUndoAction();
EnsureCaretVisible();
}
}
break;
}
}
if (_textSurfaceEventListener != null)
{
TextSurfaceEventListener.NotifyKeyDown(_textSurfaceEventListener, e);
}
}
internal static void NotifyFunctionKeyDown(TextSurfaceEventListener listener, UIKeys key)
{
}
public TextDomEventArgs(UIKeys key)
{
this.key = key;
}
internal static bool NotifyPreviewArrow(TextSurfaceEventListener listener, UIKeys key)
{
if (listener.PreviewArrowKeyDown != null)
{
TextDomEventArgs e = new TextDomEventArgs(key);
listener.PreviewArrowKeyDown(listener, e);
return e.PreventDefault;
}
return false;
}
internal static void NotifyFunctionKeyDown(TextSurfaceEventListener listener, UIKeys key)
{
}
public TextDomEventArgs(UIKeys key)
{
this.key = key;
}
internal static void NotifyKeyDown(TextSurfaceEventListener listener, UIKeys key)
{
if (listener.KeyDown != null)
{
listener.KeyDown(listener, new TextDomEventArgs(key));
}
}
internal static void NotifyArrowKeyCaretPosChanged(TextSurfaceEventListener listener, UIKeys key)
{
if (listener.ArrowKeyCaretPosChanged != null)
{
listener.ArrowKeyCaretPosChanged(listener, new TextDomEventArgs(key));
}
}
public bool OnProcessDialogKey(UIKeyEventArgs e)
{
UIKeys keyData = (UIKeys)e.KeyData;
SetCaretState(true);
if (isInVerticalPhase && (keyData != UIKeys.Up || keyData != UIKeys.Down))
{
isInVerticalPhase = false;
}
switch (e.KeyCode)
{
case UIKeys.Home:
{
OnKeyDown(e);
return(true);
}
case UIKeys.Return:
{
if (textSurfaceEventListener != null &&
TextSurfaceEventListener.NotifyPreviewEnter(textSurfaceEventListener))
{
return(true);
}
if (isMultiLine)
{
if (internalTextLayerController.SelectionRange != null)
{
InvalidateGraphicLocalArea(this, GetSelectionUpdateArea());
}
internalTextLayerController.SplitCurrentLineIntoNewLine();
if (textSurfaceEventListener != null)
{
TextSurfaceEventListener.NofitySplitNewLine(textSurfaceEventListener, e);
}
Rectangle lineArea = internalTextLayerController.CurrentLineArea;
if (lineArea.Bottom > this.ViewportBottom)
{
ScrollBy(0, lineArea.Bottom - this.ViewportBottom);
}
else
{
InvalidateGraphicOfCurrentLineArea();
}
EnsureCaretVisible();
return(true);
}
return(true);
}
case UIKeys.Left:
{
if (textSurfaceEventListener != null &&
TextSurfaceEventListener.NotifyPreviewArrow(textSurfaceEventListener, keyData))
{
return(true);
}
InvalidateGraphicOfCurrentLineArea();
if (!e.Shift)
{
internalTextLayerController.CancelSelect();
}
else
{
internalTextLayerController.StartSelectIfNoSelection();
}
Point currentCaretPos = Point.Empty;
if (!isMultiLine)
{
while (!internalTextLayerController.IsOnStartOfLine)
{
Point prvCaretPos = internalTextLayerController.CaretPos;
internalTextLayerController.CharIndex--;
currentCaretPos = internalTextLayerController.CaretPos;
if (currentCaretPos.X != prvCaretPos.X)
{
break;
}
}
}
else
{
if (internalTextLayerController.IsOnStartOfLine)
{
internalTextLayerController.CharIndex--;
currentCaretPos = internalTextLayerController.CaretPos;
}
else
{
while (!internalTextLayerController.IsOnStartOfLine)
{
Point prvCaretPos = internalTextLayerController.CaretPos;
internalTextLayerController.CharIndex--;
currentCaretPos = internalTextLayerController.CaretPos;
if (currentCaretPos.X != prvCaretPos.X)
{
break;
}
}
}
}
//-------------------
if (e.Shift)
{
internalTextLayerController.EndSelectIfNoSelection();
}
//-------------------
EnsureCaretVisible();
if (textSurfaceEventListener != null)
{
TextSurfaceEventListener.NotifyArrowKeyCaretPosChanged(textSurfaceEventListener, keyData);
}
return(true);
}
case UIKeys.Right:
{
if (textSurfaceEventListener != null &&
TextSurfaceEventListener.NotifyPreviewArrow(textSurfaceEventListener, keyData))
{
return(true);
}
InvalidateGraphicOfCurrentLineArea();
if (!e.Shift)
{
internalTextLayerController.CancelSelect();
}
else
{
internalTextLayerController.StartSelectIfNoSelection();
}
Point currentCaretPos = Point.Empty;
if (!isMultiLine)
{
while (!internalTextLayerController.IsOnEndOfLine)
{
Point prvCaretPos = internalTextLayerController.CaretPos;
internalTextLayerController.CharIndex++;
currentCaretPos = internalTextLayerController.CaretPos;
if (currentCaretPos.X != prvCaretPos.X)
{
int nextCharWidth = internalTextLayerController.GetNextCharacterWidth();
if (nextCharWidth > 0)
{
break;
}
}
}
}
else
{
if (internalTextLayerController.IsOnEndOfLine)
{
internalTextLayerController.CharIndex++;
currentCaretPos = internalTextLayerController.CaretPos;
}
else
{
while (!internalTextLayerController.IsOnEndOfLine)
{
Point prvCaretPos = internalTextLayerController.CaretPos;
internalTextLayerController.CharIndex++;
currentCaretPos = internalTextLayerController.CaretPos;
if (currentCaretPos.X != prvCaretPos.X)
{
//forward check next caret
int nextCharWidth = internalTextLayerController.GetNextCharacterWidth();
if (nextCharWidth > 0)
{
break;
}
}
}
}
}
//-------------------
if (e.Shift)
{
internalTextLayerController.EndSelectIfNoSelection();
}
//-------------------
EnsureCaretVisible();
if (textSurfaceEventListener != null)
{
TextSurfaceEventListener.NotifyArrowKeyCaretPosChanged(textSurfaceEventListener, keyData);
}
return(true);
}
case UIKeys.Down:
{
if (textSurfaceEventListener != null &&
TextSurfaceEventListener.NotifyPreviewArrow(textSurfaceEventListener, keyData))
{
return(true);
}
if (isMultiLine)
{
if (!isInVerticalPhase)
{
isInVerticalPhase = true;
verticalExpectedCharIndex = internalTextLayerController.CharIndex;
}
//----------------------------
if (!e.Shift)
{
internalTextLayerController.CancelSelect();
}
else
{
internalTextLayerController.StartSelectIfNoSelection();
}
//----------------------------
internalTextLayerController.CurrentLineNumber++;
if (verticalExpectedCharIndex > internalTextLayerController.CurrentLineCharCount - 1)
{
internalTextLayerController.CharIndex = internalTextLayerController.CurrentLineCharCount - 1;
}
else
{
internalTextLayerController.CharIndex = verticalExpectedCharIndex;
}
//----------------------------
if (e.Shift)
{
internalTextLayerController.EndSelectIfNoSelection();
}
//----------------------------
Rectangle lineArea = internalTextLayerController.CurrentLineArea;
if (lineArea.Bottom > this.ViewportBottom)
{
ScrollBy(0, lineArea.Bottom - this.ViewportBottom);
}
else
{
InvalidateGraphicOfCurrentLineArea();
}
}
if (textSurfaceEventListener != null)
{
TextSurfaceEventListener.NotifyArrowKeyCaretPosChanged(textSurfaceEventListener, keyData);
}
return(true);
}
case UIKeys.Up:
{
if (textSurfaceEventListener != null &&
TextSurfaceEventListener.NotifyPreviewArrow(textSurfaceEventListener, keyData))
{
return(true);
}
if (isMultiLine)
{
if (!isInVerticalPhase)
{
isInVerticalPhase = true;
verticalExpectedCharIndex = internalTextLayerController.CharIndex;
}
//----------------------------
if (!e.Shift)
{
internalTextLayerController.CancelSelect();
}
else
{
internalTextLayerController.StartSelectIfNoSelection();
}
//----------------------------
internalTextLayerController.CurrentLineNumber--;
if (verticalExpectedCharIndex > internalTextLayerController.CurrentLineCharCount - 1)
{
internalTextLayerController.CharIndex = internalTextLayerController.CurrentLineCharCount - 1;
}
else
{
internalTextLayerController.CharIndex = verticalExpectedCharIndex;
}
//----------------------------
if (e.Shift)
{
internalTextLayerController.EndSelectIfNoSelection();
}
Rectangle lineArea = internalTextLayerController.CurrentLineArea;
if (lineArea.Top < ViewportY)
{
ScrollBy(0, lineArea.Top - ViewportY);
}
else
{
EnsureCaretVisible();
InvalidateGraphicOfCurrentLineArea();
}
}
else
{
}
if (textSurfaceEventListener != null)
{
TextSurfaceEventListener.NotifyArrowKeyCaretPosChanged(textSurfaceEventListener, keyData);
}
return(true);
}
case UIKeys.Tab:
{
DoTab();
return(true);
}
default:
{
return(false);
}
}
}
public void OnKeyDown(UIKeyEventArgs e)
{
this.SetCaretState(true);
if (!e.HasKeyData)
{
return;
}
switch (e.KeyCode)
{
case UIKeys.Home:
{
this.DoHome(e.Shift);
} break;
case UIKeys.End:
{
this.DoEnd(e.Shift);
} break;
case UIKeys.Back:
{
if (internalTextLayerController.SelectionRange != null)
{
InvalidateGraphicLocalArea(this, GetSelectionUpdateArea());
}
else
{
InvalidateGraphicOfCurrentLineArea();
}
if (textSurfaceEventListener == null)
{
internalTextLayerController.DoBackspace();
}
else
{
if (!TextSurfaceEventListener.NotifyPreviewBackSpace(textSurfaceEventListener) &&
internalTextLayerController.DoBackspace())
{
TextSurfaceEventListener.NotifyCharactersRemoved(textSurfaceEventListener,
new TextDomEventArgs(internalTextLayerController.updateJustCurrentLine));
}
}
EnsureCaretVisible();
} break;
case UIKeys.Delete:
{
if (internalTextLayerController.SelectionRange != null)
{
InvalidateGraphicLocalArea(this, GetSelectionUpdateArea());
}
else
{
InvalidateGraphicOfCurrentLineArea();
}
if (textSurfaceEventListener == null)
{
internalTextLayerController.DoDelete();
}
else
{
VisualSelectionRangeSnapShot delpart = internalTextLayerController.DoDelete();
TextSurfaceEventListener.NotifyCharactersRemoved(textSurfaceEventListener,
new TextDomEventArgs(internalTextLayerController.updateJustCurrentLine));
}
EnsureCaretVisible();
} break;
default:
{
if (textSurfaceEventListener != null)
{
UIKeys keycode = e.KeyCode;
if (keycode >= UIKeys.F1 && keycode <= UIKeys.F12)
{
InvalidateGraphicLocalArea(this, GetSelectionUpdateArea());
TextSurfaceEventListener.NotifyFunctionKeyDown(textSurfaceEventListener, keycode);
EnsureCaretVisible();
}
}
} break;
}
if (e.HasKeyData && e.Ctrl)
{
switch (e.KeyCode)
{
case UIKeys.C:
{
StringBuilder stBuilder = GetFreeStringBuilder();
internalTextLayerController.CopySelectedTextToPlainText(stBuilder);
if (stBuilder != null)
{
if (stBuilder.Length == 0)
{
Clipboard.Clear();
}
else
{
Clipboard.SetText(stBuilder.ToString());
}
}
ReleaseStringBuilder(stBuilder);
} break;
case UIKeys.V:
{
if (Clipboard.ContainUnicodeText())
{
internalTextLayerController.AddTextRunsToCurrentLine(
new EditableRun[] {
new EditableTextRun(this.Root,
Clipboard.GetUnicodeText(), this.CurrentTextSpanStyle)
});
EnsureCaretVisible();
}
} break;
case UIKeys.X:
{
if (internalTextLayerController.SelectionRange != null)
{
if (internalTextLayerController.SelectionRange != null)
{
InvalidateGraphicLocalArea(this, GetSelectionUpdateArea());
}
StringBuilder stBuilder = GetFreeStringBuilder();
internalTextLayerController.CopySelectedTextToPlainText(stBuilder);
if (stBuilder != null)
{
Clipboard.SetText(stBuilder.ToString());
}
internalTextLayerController.DoDelete();
EnsureCaretVisible();
ReleaseStringBuilder(stBuilder);
}
} break;
case UIKeys.Z:
{
internalTextLayerController.UndoLastAction();
EnsureCaretVisible();
} break;
case UIKeys.Y:
{
internalTextLayerController.ReverseLastUndoAction();
EnsureCaretVisible();
} break;
case UIKeys.B:
{
//TextSpanStyle style = internalTextLayerController.GetFirstTextStyleInSelectedRange();
//TextSpanStyle textStyle = null;
////test only ***
////TODO: make this more configurable
//if (style != null)
//{
// TextSpanStyle defaultBeh = ((TextSpanStyle)style);
// if (defaultBeh.FontBold)
// {
// textStyle = StyleHelper.CreateNewStyle(Color.Black);
// }
// else
// {
// textStyle = StyleHelper.CreateNewStyle(Color.Blue);
// }
//}
//else
//{
// textStyle = StyleHelper.CreateNewStyle(Color.Blue);
//}
//internalTextLayerController.DoFormatSelection(textStyle);
//if (internalTextLayerController.updateJustCurrentLine)
//{
// InvalidateGraphicOfCurrentLineArea();
//}
//else
//{
// InvalidateGraphics();
//}
} break;
}
}
if (textSurfaceEventListener != null)
{
TextSurfaceEventListener.NotifyKeyDown(textSurfaceEventListener, e.KeyCode);
}
}
public void HostInvokeKeyUp(UIKeys keys)
{
_isKeyDown = false;
}
internal static void NotifyArrowKeyCaretPosChanged(TextSurfaceEventListener listener, UIKeys key)
{
if (listener.ArrowKeyCaretPosChanged != null)
{
listener.ArrowKeyCaretPosChanged(listener, new TextDomEventArgs(key));
}
}
public void HandleKeyDown(UIKeyEventArgs e)
{
this.SetCaretState(true);
if (!e.HasKeyData)
{
return;
}
switch (e.KeyCode)
{
case UIKeys.Home:
{
this.DoHome(e.Shift);
}
break;
case UIKeys.End:
{
this.DoEnd(e.Shift);
}
break;
case UIKeys.Back:
{
if (internalTextLayerController.SelectionRange != null)
{
InvalidateGraphicLocalArea(this, GetSelectionUpdateArea());
}
else
{
InvalidateGraphicOfCurrentLineArea();
}
if (textSurfaceEventListener == null)
{
internalTextLayerController.DoBackspace();
}
else
{
if (!TextSurfaceEventListener.NotifyPreviewBackSpace(textSurfaceEventListener) &&
internalTextLayerController.DoBackspace())
{
TextSurfaceEventListener.NotifyCharactersRemoved(textSurfaceEventListener,
new TextDomEventArgs(internalTextLayerController.updateJustCurrentLine));
}
}
EnsureCaretVisible();
}
break;
case UIKeys.Delete:
{
if (internalTextLayerController.SelectionRange != null)
{
InvalidateGraphicLocalArea(this, GetSelectionUpdateArea());
}
else
{
InvalidateGraphicOfCurrentLineArea();
}
if (textSurfaceEventListener == null)
{
internalTextLayerController.DoDelete();
}
else
{
VisualSelectionRangeSnapShot delpart = internalTextLayerController.DoDelete();
TextSurfaceEventListener.NotifyCharactersRemoved(textSurfaceEventListener,
new TextDomEventArgs(internalTextLayerController.updateJustCurrentLine));
}
EnsureCaretVisible();
}
break;
default:
{
if (textSurfaceEventListener != null)
{
UIKeys keycode = e.KeyCode;
if (keycode >= UIKeys.F1 && keycode <= UIKeys.F12)
{
InvalidateGraphicLocalArea(this, GetSelectionUpdateArea());
TextSurfaceEventListener.NotifyFunctionKeyDown(textSurfaceEventListener, keycode);
EnsureCaretVisible();
}
}
}
break;
}
if (e.HasKeyData && e.Ctrl)
{
switch (e.KeyCode)
{
case UIKeys.A:
{
//select all
//....
this.CurrentLineNumber = 0;
//start select to end
DoEnd(true); //simulate
this.CurrentLineNumber = this.LineCount - 1;
DoEnd(true);
}
break;
case UIKeys.C:
{
StringBuilder stBuilder = GetFreeStringBuilder();
internalTextLayerController.CopySelectedTextToPlainText(stBuilder);
if (stBuilder != null)
{
if (stBuilder.Length == 0)
{
Clipboard.Clear();
}
else
{
Clipboard.SetText(stBuilder.ToString());
}
}
ReleaseStringBuilder(stBuilder);
}
break;
case UIKeys.V:
{
if (Clipboard.ContainUnicodeText())
{
//1. we need to parse multi-line to single line
//this may need text-break services
internalTextLayerController.AddUnformattedStringToCurrentLine(
Clipboard.GetUnicodeText(), this.currentSpanStyle);
EnsureCaretVisible();
}
}
break;
case UIKeys.X:
{
if (internalTextLayerController.SelectionRange != null)
{
if (internalTextLayerController.SelectionRange != null)
{
InvalidateGraphicLocalArea(this, GetSelectionUpdateArea());
}
StringBuilder stBuilder = GetFreeStringBuilder();
internalTextLayerController.CopySelectedTextToPlainText(stBuilder);
if (stBuilder != null)
{
Clipboard.SetText(stBuilder.ToString());
}
internalTextLayerController.DoDelete();
EnsureCaretVisible();
ReleaseStringBuilder(stBuilder);
}
}
break;
case UIKeys.Z:
{
internalTextLayerController.UndoLastAction();
EnsureCaretVisible();
}
break;
case UIKeys.Y:
{
internalTextLayerController.ReverseLastUndoAction();
EnsureCaretVisible();
}
break;
case UIKeys.B:
{
//
//test add markers
//
//if (internalTextLayerController.SelectionRange != null)
//{
// //
// internalTextLayerController.SelectionRange.SwapIfUnOrder();
// VisualMarkerSelectionRange markerSelRange =
// VisualMarkerSelectionRange.CreateFromSelectionRange(
// internalTextLayerController.SelectionRange.GetSelectionRangeSnapshot());
// //then add to the marker layers
// markerSelRange.BindToTextLayer(textLayer);
// internalTextLayerController.VisualMarkers.Add(markerSelRange);
//}
//
//TextSpanStyle style = internalTextLayerController.GetFirstTextStyleInSelectedRange();
//TextSpanStyle textStyle = null;
////test only ***
////TODO: make this more configurable
//if (style != null)
//{
// TextSpanStyle defaultBeh = ((TextSpanStyle)style);
// if (defaultBeh.FontBold)
// {
// textStyle = StyleHelper.CreateNewStyle(Color.Black);
// }
// else
// {
// textStyle = StyleHelper.CreateNewStyle(Color.Blue);
// }
//}
//else
//{
// textStyle = StyleHelper.CreateNewStyle(Color.Blue);
//}
//internalTextLayerController.DoFormatSelection(textStyle);
//if (internalTextLayerController.updateJustCurrentLine)
//{
// InvalidateGraphicOfCurrentLineArea();
//}
//else
//{
// InvalidateGraphics();
//}
}
break;
}
}
if (textSurfaceEventListener != null)
{
TextSurfaceEventListener.NotifyKeyDown(textSurfaceEventListener, e.KeyCode);
}
}