public void Undo()
{
// ensure that the current tool's modifications are added to the history first (e.g. editing text)
PintaCore.Tools.CurrentTool.DoCommit();
if (historyPointer < 0)
{
throw new InvalidOperationException("Undo stack is empty");
}
else
{
BaseHistoryItem item = history[historyPointer];
item.Undo();
item.State = HistoryItemState.Redo;
ListStore.SetValue(item.Id, 0, item);
history[historyPointer] = item;
historyPointer--;
}
if (historyPointer == 0)
{
document.IsDirty = false;
PintaCore.Actions.Edit.Undo.Sensitive = false;
CanUndo = false;
}
PintaCore.Actions.Edit.Redo.Sensitive = true;
CanRedo = true;
PintaCore.History.OnActionUndone();
}
public void Undo()
{
if (historyPointer < 0)
{
throw new InvalidOperationException("Undo stack is empty");
}
else
{
BaseHistoryItem item = history[historyPointer];
item.Undo();
item.State = HistoryItemState.Redo;
ListStore.SetValue(item.Id, 0, item);
history[historyPointer] = item;
historyPointer--;
}
if (historyPointer == 0)
{
document.IsDirty = false;
PintaCore.Actions.Edit.Undo.Sensitive = false;
CanUndo = false;
}
PintaCore.Actions.Edit.Redo.Sensitive = true;
CanRedo = true;
PintaCore.History.OnActionUndone();
}