private void UpdateSelection(byte idx)
{
if (PalSource == null) return;
if (ModifierKeys == Keys.Alt)
{
BackColor = PalSource[idx];
BackColorChanged?.Invoke(this, new EventArgs());
return;
}
if (!IsSelectable) return;
if (IsMultiSelect)
{
switch (ModifierKeys)
{
case Keys.Control:
if (Selections.Contains(idx)) Selections.Remove(idx);
else Selections.Add(idx);
break;
case Keys.Shift:
if (Selections.Count == 0)
{
Selections.Add(idx);
break;
}
if (Selections.Last() == idx)
{
Selections.Remove(idx);
}
else
{
if (Selections.Last() < idx)
{
for (int i = Selections.Last() + 1; i <= idx; i++)
if (!Selections.Contains((byte)i)) Selections.Add((byte)i);
}
else
{
for (int i = Selections.Last() - 1; i >= idx; i--)
if (!Selections.Contains((byte)i)) Selections.Add((byte)i);
}
}
break;
default:
Selections.Clear();
Selections.Add(idx);
break;
}
}
else
{
Selections.Clear();
Selections.Add(idx);
}
if (PalSource != null)
SelectedIndexChanged?.Invoke(this, new EventArgs());
if (IsSelectVisible) Refresh();
}
public void DeleteCurrentSelection()
{
Selections.Remove(CurrentSelection);
CurrentSelection = Selections.FirstOrDefault();
if (!Selections.Contains(_currentlySaved))
{
_currentlySaved = null;
}
SaveSelection();
}
public void SelectionCheckBox_Init(object sender, EventArgs e)
{
try
{
CheckBox rowCheckBox = (CheckBox)sender;
rowCheckBox.Checked = Selections.Contains(GetDataKeyObject(rowCheckBox));
}
catch (Exception ex)
{
Util.Log.Error("DridViewEx::SelectionCheckBox_Init", ex);
}
}
protected override bool IsInputKey(Keys keyData)
{
if (PalSource == null) return false;
Cursor = Cursors.Default;
byte idx = Selections.LastOrDefault();
int curX = idx / 32;
int curY = idx % 32;
switch (keyData)
{
// Functional Keys
case Keys.Control:
case Keys.Shift:
case Keys.Alt:
return true;
// Move Idx
case Keys.Up:
if (curY > 0)
UpdateSelection((byte)(idx - 1));
else if (curX > 0) UpdateSelection((byte)(idx - 1));
return true;
case Keys.Down:
if (curY < 31)
UpdateSelection((byte)(idx + 1));
else if (curX < 7) UpdateSelection((byte)(idx + 1));
return true;
case Keys.Left:
if (curX > 0)
UpdateSelection((byte)(idx - 32));
return true;
case Keys.Right:
if (curX < 7)
UpdateSelection((byte)(idx + 32));
return true;
case Keys.Delete:
if (IsEditable)
{
PalSourceChanging?.Invoke(this, new EventArgs());
if (!Selections.Contains(idx)) Selections.Add(idx);
foreach (byte i in Selections) PalSource[i] = BackColor;
PalSourceChanged?.Invoke(this, new EventArgs());
}
return true;
}
return false;
}
/// <summary>
/// Handles the CheckedChanged event of the SelectionCheckBox control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="System.EventArgs"/> instance containing the event data.</param>
public void SelectionCheckBox_CheckedChanged(object sender, EventArgs e)
{
try
{
var rowCheckBox = (CheckBox)sender;
var key = GetDataKeyObject(rowCheckBox);
var inSelection = Selections.Contains(key);
if (rowCheckBox.Checked && !inSelection)
{
Selections.Add(key);
}
else if (!rowCheckBox.Checked && inSelection)
{
Selections.Remove(key);
}
}
catch (Exception ex)
{
Util.Log.Error("DridViewEx::SelectionCheckBox_CheckedChanged", ex);
}
}