/// <summary>
/// Returns a <see cref="System.String"/> that represents this Gdk key.
/// </summary>
/// <param name="key">The key.</param>
/// <returns>
/// A <see cref="System.String"/> that represents this instance.
/// </returns>
/// <remarks>
/// This is taken from MonoDevelop's code.
/// </remarks>
public static string ToString(Key key)
{
// Pull out the unicode value for the key. If we have one, we use
// that instead.
var c = (char)Keyval.ToUnicode((uint)key);
if (c != 0)
{
return(c == ' '
? "Space"
: Char.ToUpper(c).ToString());
}
// Some keys do not convert directly because there are multiple
// values for the enumeration. This is used to normalize the values.
switch (key)
{
case Key.Next:
return("Page_Down");
case Key.L1:
return("F11");
case Key.L2:
return("F12");
}
// Return the string representation of the key.
return(key.ToString());
}
void OnInputKeyPressEvent(EventKey evnt)
{
if (im_context.FilterKeypress(evnt) || ((evnt.State & ModifierType.ControlMask) != 0))
{
return;
}
char c;
if (evnt.Key == Key.Return)
{
c = '\n';
}
else
{
c = (char)Keyval.ToUnicode(evnt.KeyValue);
}
if (char.IsLetterOrDigit(c) ||
char.IsPunctuation(c) ||
c == '\n' ||
(c == ' ' && SearchController.Query.Length > 0) ||
char.IsSymbol(c))
{
SearchController.AddChar(c);
}
}
public static bool CombinationValid(AccelKey accelKey)
{
char key = (char)Keyval.ToUnicode((uint)accelKey.Key);
ModifierType modifier = GetAllowedModifier(accelKey.AccelMods);
return(IsFunctional(accelKey.Key) || accelKey.Key == Key.Delete ||
(((modifier & ControlModifier) != 0 || (modifier & AltModifier) != 0) && (key != char.MinValue || accelKey.Key == Key.BackSpace)));
}
/// <summary>
/// Breaks apart an event key into the individual and normalized key and
/// any modifiers.
/// </summary>
/// <param name="evt">The evt.</param>
/// <param name="key">The key.</param>
/// <param name="modifiers">The mod.</param>
public static void DecomposeKeys(
EventKey evt,
out Key key,
out ModifierType modifiers)
{
// Use the keymap to decompose various elements of the hardware keys.
uint keyval;
int effectiveGroup,
level;
ModifierType consumedModifiers;
keymap.TranslateKeyboardState(
evt.HardwareKeycode,
evt.State,
evt.Group,
out keyval,
out effectiveGroup,
out level,
out consumedModifiers);
// Break out the identified keys and modifiers.
key = (Key)keyval;
modifiers = evt.State & ~consumedModifiers;
// Normalize some of the keys that don't make sense.
if (key == Key.ISO_Left_Tab)
{
key = Key.Tab;
modifiers |= ModifierType.ShiftMask;
}
// Check to see if we are a character and pull out the shift key if
// it is a capital letter. This is used to normalize so all the
// keys are uppercase with a shift modifier.
bool shiftWasConsumed = ((evt.State ^ modifiers) & ModifierType.ShiftMask)
!= 0;
var unicode = (char)Keyval.ToUnicode((uint)key);
if (shiftWasConsumed && Char.IsUpper(unicode))
{
modifiers |= ModifierType.ShiftMask;
}
if (Char.IsLetter(unicode) &&
Char.IsLower(unicode))
{
key = (Key)Char.ToUpper(unicode);
}
}
/// <summary>
/// Called when a key is pressed.
/// </summary>
/// <param name="eventKey">The event key.</param>
/// <returns></returns>
protected override bool OnKeyPressEvent(EventKey eventKey)
{
// If we don't have a line buffer, don't do anything.
if (LineBuffer == null)
{
return(false);
}
// Decompose the key into its components.
ModifierType modifier;
Key key;
GdkUtility.DecomposeKeys(eventKey, out key, out modifier);
// Get the unicode character for this key.
uint unicodeChar = Keyval.ToUnicode(eventKey.KeyValue);
// Pass it on to the controller.
return(controller.HandleKeyPress(key, modifier, unicodeChar));
}
public static bool CombinationValidForItem(AccelKey accelKey)
{
char key = (char)Keyval.ToUnicode((uint)accelKey.Key);
return(IsFunctional(accelKey.Key) || key != char.MinValue);
}
private bool OnCellKeyPressEvent(CellKeyPressEventArgs args)
{
if (eventLock)
{
return(true);
}
try {
eventLock = true;
if (cellsFucusable && args.Cell.IsValid)
{
column_cache [args.Cell.Column].Column.ListCell.OnKeyPressEvent(args);
}
if (CellKeyPressEvent != null)
{
CellKeyPressEvent(this, args);
}
#if DEBUG_LISTVIEW
Debug.WriteLine(string.Format("ListView received {0}", "OnCellKeyPressEvent"));
#endif
bool ret;
// Don't send arrow keys to the parent because the focus gets lost
switch (args.GdkKey)
{
case Gdk.Key.Up:
case Gdk.Key.KP_Up:
case Gdk.Key.Down:
case Gdk.Key.KP_Down:
case Gdk.Key.Left:
case Gdk.Key.Right:
ret = true;
break;
default:
ret = base.OnKeyPressEvent(args.EventKey);
break;
}
switch (args.GdkKey)
{
case Gdk.Key.Up:
case Gdk.Key.KP_Up:
if (!manualFucusChange)
{
return(KeyboardScroll(args.EventKey.State, -1));
}
break;
case Gdk.Key.Down:
case Gdk.Key.KP_Down:
if (!manualFucusChange)
{
return(KeyboardScroll(args.EventKey.State, 1));
}
break;
case Gdk.Key.Left:
if (!manualFucusChange && cellsFucusable)
{
FocusCell(selection.FocusedCell.Column - 1, selection.FocusedCell.Row);
InvalidateList();
}
break;
case Gdk.Key.Right:
if (!manualFucusChange && cellsFucusable)
{
FocusCell(selection.FocusedCell.Column + 1, selection.FocusedCell.Row);
InvalidateList();
}
break;
case Gdk.Key.Page_Up:
case Gdk.Key.KP_Page_Up:
if (!manualFucusChange)
{
return(KeyboardScroll(args.EventKey.State,
(int)(-vadjustment.PageIncrement / RowHeight)));
}
break;
case Gdk.Key.Page_Down:
case Gdk.Key.KP_Page_Down:
if (!manualFucusChange)
{
return(KeyboardScroll(args.EventKey.State,
(int)(vadjustment.PageIncrement / RowHeight)));
}
break;
case Gdk.Key.Home:
case Gdk.Key.KP_Home:
if (!manualFucusChange)
{
return(KeyboardScroll(args.EventKey.State, -10000000));
}
break;
case Gdk.Key.End:
case Gdk.Key.KP_End:
if (!manualFucusChange)
{
return(KeyboardScroll(args.EventKey.State, 10000000));
}
break;
case Gdk.Key.Return:
case Gdk.Key.KP_Enter:
ActivateRow();
break;
default:
char keyChar = (char)Keyval.ToUnicode((uint)args.GdkKey);
if (char.ToLower(keyChar) == 'a' && (args.EventKey.State & KeyShortcuts.ControlModifier) != 0)
{
if (allowMultipleSelect)
{
if ((args.EventKey.State & ModifierType.ShiftMask) != 0)
{
selection.Clear();
}
else
{
selection.SelectAll();
}
QueueDraw();
}
return(ret);
}
if (!editedCell.IsValid)
{
if (keyChar != '\0')
{
if (char.ToLower(keyChar) == 'v' && (args.EventKey.State & KeyShortcuts.ControlModifier) != 0)
{
Clipboard clip = Clipboard.Get(Atom.Intern("CLIPBOARD", false));
SetAutoFilter(autoFilterValue + clip.WaitForText(), true);
}
else
{
SetAutoFilter(autoFilterValue + keyChar, true);
}
}
else if (args.GdkKey == Gdk.Key.BackSpace)
{
SetAutoFilter(autoFilterValue.Substring(0, Math.Max(0, autoFilterValue.Length - 1)), true);
}
}
break;
}
return(ret);
} finally {
eventLock = false;
}
}