public void RecordUndoAction(string strDesc, UndoMgr undo)
{
if (undo == null)
{
return;
}
PaletteColorData data = GetUndoData();
UndoAction_Subpalette16Edit action = new UndoAction_Subpalette16Edit(undo, this, m_snapshot, data, strDesc);
bool fHandled = false;
if (action.IsSelectionChange())
{
// Ignore selection changes
fHandled = true;
}
else
{
// If the last undo action is also a PaletteEdit, try to merge them together
UndoAction_Subpalette16Edit last_action = undo.GetCurrent() as UndoAction_Subpalette16Edit;
if (last_action != null)
{
// Merge 2 color changes (as long as they edit the same color)
int last_color, last_color_val1, last_color_val2;
int this_color, this_color_val1, this_color_val2;
if (last_action.IsColorChange(out last_color, out last_color_val1, out last_color_val2) &&
action.IsColorChange(out this_color, out this_color_val1, out this_color_val2)
)
{
if (last_color == this_color)
{
// If this color change takes it back to the original value, then
// delete the UndoAction.
if (last_color_val1 == this_color_val2)
{
undo.DeleteCurrent();
}
else
{
last_action.UpdateRedoData(data);
}
fHandled = true;
}
}
}
}
if (!fHandled)
{
undo.Push(action);
}
// Update the snapshot for the next UndoAction
RecordSnapshot();
}
public void RecordUndoAction(string strDesc, UndoMgr undo)
{
if (undo == null)
return;
PaletteColorData data = GetUndoData();
UndoAction_Subpalette16Edit action = new UndoAction_Subpalette16Edit(undo, this, m_snapshot, data, strDesc);
bool fHandled = false;
if (action.IsSelectionChange())
{
// Ignore selection changes
fHandled = true;
}
else
{
// If the last undo action is also a PaletteEdit, try to merge them together
UndoAction_Subpalette16Edit last_action = undo.GetCurrent() as UndoAction_Subpalette16Edit;
if (last_action != null)
{
// Merge 2 color changes (as long as they edit the same color)
int last_color, last_color_val1, last_color_val2;
int this_color, this_color_val1, this_color_val2;
if (last_action.IsColorChange(out last_color, out last_color_val1, out last_color_val2)
&& action.IsColorChange(out this_color, out this_color_val1, out this_color_val2)
)
{
if (last_color == this_color)
{
// If this color change takes it back to the original value, then
// delete the UndoAction.
if (last_color_val1 == this_color_val2)
undo.DeleteCurrent();
else
last_action.UpdateRedoData(data);
fHandled = true;
}
}
}
}
if (!fHandled)
undo.Push(action);
// Update the snapshot for the next UndoAction
RecordSnapshot();
}