/// <summary>
/// Gets all released Braille keyboard buttons.
/// </summary>
/// <param name="state">The state.</param>
/// <returns>Flag of all released Braille keyboard buttons</returns>
public static BrailleIO_BrailleKeyboardButton GetAllUpBrailleKeyboardButtons(BrailleIO_BrailleKeyboardButtonStates state)
{
BrailleIO_BrailleKeyboardButton result = BrailleIO_BrailleKeyboardButton.None;
try
{
result = (BrailleIO_BrailleKeyboardButton)GetButtonUpFlags((int)state);
}
catch (Exception) { }
return(result);
}
/// <summary>
/// Gets all pressed Braille keyboard buttons.
/// </summary>
/// <param name="state">The state.</param>
/// <returns>Flag of all pressed Braille keyboard buttons</returns>
public static BrailleIO_BrailleKeyboardButton GetAllDownBrailleKeyboardButtons(BrailleIO_BrailleKeyboardButtonStates state)
{
BrailleIO_BrailleKeyboardButton result = BrailleIO_BrailleKeyboardButton.None;
try
{
result = (BrailleIO_BrailleKeyboardButton)ShiftDownButtonsToUpButtonStates(GetButtonDownFlags((int)state));
}
catch (Exception) { }
return(result);
}
/// <summary>
/// Checks if a key combination was released.
/// </summary>
/// <param name="pressed">The pressed general buttons.</param>
/// <param name="released">The released general buttons.</param>
/// <param name="pressedKbB">The pressed Braille keyboard buttons.</param>
/// <param name="releasedKbB">The released Braille keyboard buttons.</param>
/// <param name="pressedAdBs">The pressed additional buttons.</param>
/// <param name="releasedAdBs">The released additional buttons.</param>
private void checkForKeyCombination(
BrailleIO_DeviceButton pressed,
BrailleIO_DeviceButton released,
BrailleIO_BrailleKeyboardButton pressedKbB,
BrailleIO_BrailleKeyboardButton releasedKbB,
Dictionary <int, BrailleIO_AdditionalButton> pressedAdBs,
Dictionary <int, BrailleIO_AdditionalButton> releasedAdBs)
{
//System.Diagnostics.Debug.WriteLine("---- pressed: " + pressed);
//System.Diagnostics.Debug.WriteLine("---- released: " + released);
//System.Diagnostics.Debug.WriteLine("---- pressedKbB: " + pressedKbB);
//System.Diagnostics.Debug.WriteLine("---- releasedKbB: " + releasedKbB);
//System.Diagnostics.Debug.WriteLine("---- pressedAdBs: " + String.Join(", ", pressedAdBs.Values));
//System.Diagnostics.Debug.WriteLine("---- releasedAdBs: " + String.Join(", ", releasedAdBs.Values));
if (keyCombinationTimer != null) // if timer is running for collecting released events
{
keyCombinationTimer.Stop(); // stop further expiring
if (!(Kc is KeyCombinationItem))
{
Kc = new KeyCombinationItem(
BrailleIO_DeviceButton.None,
BrailleIO_DeviceButton.None,
BrailleIO_BrailleKeyboardButton.None,
BrailleIO_BrailleKeyboardButton.None,
null, null);
}
KeyCombinationItem kc = (KeyCombinationItem)Kc;
// general keys
kc.PressedGeneralKeys = (this.PressedDeviceButtons & ~BrailleIO_DeviceButton.Unknown);
kc.ReleasedGeneralKeys |= released;
kc.ReleasedGeneralKeys = kc.ReleasedGeneralKeys & ~kc.PressedGeneralKeys & ~BrailleIO_DeviceButton.Unknown;
// keyboard
kc.PressedKeyboardKeys = this.PressedBrailleKeyboardButtons;
kc.ReleasedKeyboardKeys |= releasedKbB;
kc.ReleasedKeyboardKeys = kc.ReleasedKeyboardKeys & ~kc.PressedKeyboardKeys;
// additional
kc.PressedAdditionalKeys = this.PressedAdditionalButtons;
kc.ReleasedAdditionalKeys = Utils.CombineAdditionalButtonCollections(kc.ReleasedAdditionalKeys, pressedAdBs);
Kc = kc; // store globally
keyCombinationTimer.Start();
if (!kc.AreButtonsPressed()) //if no more buttons pressed
{
t_Elapsed(keyCombinationTimer, null);
}
}
}
/// <summary>
/// Gets the device button for one Braille keyboard button state.
/// </summary>
/// <param name="state">The state.</param>
/// <returns>the button related to this state</returns>
public static BrailleIO_BrailleKeyboardButton GetDeviceButtonFlagsOfState(BrailleIO_BrailleKeyboardButtonStates state)
{
BrailleIO_BrailleKeyboardButton buttons = BrailleIO_BrailleKeyboardButton.None;
try
{
buttons = (BrailleIO_BrailleKeyboardButton)ShiftDownButtonsToUpButtonStates((int)state);
}
catch (Exception) { }
return(buttons);
}
/// <summary>
/// Fires a key state changed event.
/// </summary>
/// <param name="keyCode">The key code.</param>
/// <param name="raw">The raw.</param>
/// <param name="keyboardCode">optional combined Braille keyboard button states.</param>
/// <param name="additionalKeyCode">list of optional combined additional button states.</param>
protected virtual void fireKeyStateChanged(
BrailleIO_DeviceButtonStates keyCode,
ref OrderedDictionary raw,
BrailleIO_BrailleKeyboardButtonStates keyboardCode = BrailleIO_BrailleKeyboardButtonStates.None,
BrailleIO_AdditionalButtonStates[] additionalKeyCode = null)
{
BrailleIO_DeviceButton pressed = BrailleIO_DeviceButton.None;
BrailleIO_DeviceButton released = BrailleIO_DeviceButton.None;
BrailleIO_BrailleKeyboardButton pressedKbB = BrailleIO_BrailleKeyboardButton.None;
BrailleIO_BrailleKeyboardButton releasedKbB = BrailleIO_BrailleKeyboardButton.None;
Dictionary <int, BrailleIO_AdditionalButton> pressedAdBs = null;
Dictionary <int, BrailleIO_AdditionalButton> releasedAdBs = null;
try
{
// general buttons
updatePressedDeviceButtons(keyCode, out pressed, out released);
// braille keyboard buttons
updatePressedKeyboardButtons(keyboardCode, out pressedKbB, out releasedKbB);
// additional buttons
updatePressedAdditionalButtons(additionalKeyCode, out pressedAdBs, out releasedAdBs);
}
catch
{
System.Diagnostics.Debug.WriteLine("ERROR in updating the current button states");
}
finally
{
// TODO: what to do to get it valid again?!
}
if (keyStateChanged != null)
{
try
{
keyStateChanged(this, new BrailleIO_KeyStateChanged_EventArgs(keyCode, ref raw, keyboardCode, additionalKeyCode));
}
catch { }
}
checkForKeyCombination(
pressed, released,
pressedKbB, releasedKbB,
pressedAdBs, releasedAdBs);
}
/// <summary>
/// Initializes a new instance of the <see cref="KeyCombinationItem" /> struct.
/// </summary>
/// <param name="pressedGeneralKeys">The pressed general keys.</param>
/// <param name="releasedGeneralKeys">The released general keys.</param>
/// <param name="pressedKeyboardKeys">The pressed keyboard keys.</param>
/// <param name="releasedKeyboardKeys">The released keyboard keys.</param>
/// <param name="pressedAdditionalKeys">The pressed additional keys.</param>
/// <param name="releasedAdditionalKeys">The released additional keys.</param>
public KeyCombinationItem(
BrailleIO_DeviceButton pressedGeneralKeys,
BrailleIO_DeviceButton releasedGeneralKeys,
BrailleIO_BrailleKeyboardButton pressedKeyboardKeys,
BrailleIO_BrailleKeyboardButton releasedKeyboardKeys,
BrailleIO_AdditionalButton[] pressedAdditionalKeys,
BrailleIO_AdditionalButton[] releasedAdditionalKeys
)
{
PressedGeneralKeys = pressedGeneralKeys;
ReleasedGeneralKeys = releasedGeneralKeys;
PressedKeyboardKeys = pressedKeyboardKeys;
ReleasedKeyboardKeys = releasedKeyboardKeys;
PressedAdditionalKeys = pressedAdditionalKeys;
ReleasedAdditionalKeys = releasedAdditionalKeys;
}
/// <summary>Updates the list of pressed keyboard buttons.</summary>
/// <param name="keyboardCode">The keyboard code.</param>
/// <param name="pressedKbB">The pressed keyboard buttons.</param>
/// <param name="releasedKbB">The released keyboard buttons.</param>
protected virtual void updatePressedKeyboardButtons(
BrailleIO_BrailleKeyboardButtonStates keyboardCode,
out BrailleIO_BrailleKeyboardButton pressedKbB,
out BrailleIO_BrailleKeyboardButton releasedKbB)
{
pressedKbB = BrailleIO_BrailleKeyboardButton.None;
releasedKbB = BrailleIO_BrailleKeyboardButton.None;
if (keyboardCode != BrailleIO_BrailleKeyboardButtonStates.None)
{
lock (_syncLock)
{
pressedKbB = Utils.GetAllDownBrailleKeyboardButtons(keyboardCode);
PressedBrailleKeyboardButtons = PressedBrailleKeyboardButtons | pressedKbB;
releasedKbB = Utils.GetAllUpBrailleKeyboardButtons(keyboardCode);
PressedBrailleKeyboardButtons = PressedBrailleKeyboardButtons & ~releasedKbB;
}
}
}
/// <summary>
/// Initializes a new instance of the <see cref="KeyCombinationItem" /> struct.
/// </summary>
/// <param name="pressedGeneralKeys">The pressed general keys.</param>
/// <param name="releasedGeneralKeys">The released general keys.</param>
/// <param name="pressedKeyboardKeys">The pressed keyboard keys.</param>
/// <param name="releasedKeyboardKeys">The released keyboard keys.</param>
/// <param name="pressedAdditionalKeys">The pressed additional keys.</param>
/// <param name="releasedAdditionalKeys">The released additional keys.</param>
public KeyCombinationItem(
BrailleIO_DeviceButton pressedGeneralKeys,
BrailleIO_DeviceButton releasedGeneralKeys,
BrailleIO_BrailleKeyboardButton pressedKeyboardKeys,
BrailleIO_BrailleKeyboardButton releasedKeyboardKeys,
BrailleIO_AdditionalButton[] pressedAdditionalKeys,
BrailleIO_AdditionalButton[] releasedAdditionalKeys
)
{
_pressedGeneralKeys = pressedGeneralKeys;
_releasedGeneralKeys = releasedGeneralKeys;
_pressedKeyboardKeys = pressedKeyboardKeys;
_releasedKeyboardKeys = releasedKeyboardKeys;
_pressedAdditionalKeys = pressedAdditionalKeys;
_releasedAdditionalKeys = releasedAdditionalKeys;
_pressedString = _releasedString = "-";
_pressed = _released = 0;
}
/// <summary>
/// Gets the 'down' state value for a certain Braille keyboard button.
/// </summary>
/// <param name="button">The button.</param>
/// <returns>the enum value for the 'down' state of the button</returns>
public static BrailleIO_BrailleKeyboardButtonStates GetDownStateForDeviceButton(BrailleIO_BrailleKeyboardButton button)
{
int val = (int)button;
BrailleIO_BrailleKeyboardButtonStates result = BrailleIO_BrailleKeyboardButtonStates.None;
try
{
result = (BrailleIO_BrailleKeyboardButtonStates)ShiftUpButtonsToUpDownStates(GetButtonUpFlags(val));
}
catch (Exception) { }
return(result);
}