private void menuEdit_Undo_Click(object sender, EventArgs e)
{
UndoMgr undo = ActiveUndo();
if (undo == null)
{
return;
}
undo.ApplyUndo();
HandleEverythingChanged();
}
public void Test_AddSprite_draw_undo()
{
Sprite s = m_ss.AddSprite(1, 1, "sample", 0, "", 0, m_mgr);
Assert.IsNotNull(s);
Assert.AreEqual(1, m_mgr.Count);
Assert.AreEqual(0, m_mgr.Current);
Assert.IsTrue(m_mgr.CanUndo());
Assert.IsFalse(m_mgr.CanRedo());
// Draw a pixel.
int x1 = 3, y1 = 4;
int color1 = 1;
s.SetPixel(x1, y1, color1);
Assert.AreEqual(color1, s.GetPixel(x1, y1));
s.RecordUndoAction("pencil1", m_mgr);
Assert.AreEqual(2, m_mgr.Count);
Assert.AreEqual(1, m_mgr.Current);
UndoAction_SpriteEdit u1 = m_mgr.GetCurrent() as UndoAction_SpriteEdit;
Assert.AreEqual(0, u1.Before.tiles[0].pixels[x1, y1]);
Assert.AreEqual(color1, u1.After.tiles[0].pixels[x1, y1]);
Assert.IsTrue(m_mgr.CanUndo());
Assert.IsFalse(m_mgr.CanRedo());
// Draw another pixel.
int x2 = 4, y2 = 5;
int color2 = 2;
s.SetPixel(x2, y2, color2);
Assert.AreEqual(color2, s.GetPixel(x2, y2));
s.RecordUndoAction("pencil2", m_mgr);
Assert.AreEqual(3, m_mgr.Count);
Assert.AreEqual(2, m_mgr.Current);
UndoAction_SpriteEdit u2 = m_mgr.GetCurrent() as UndoAction_SpriteEdit;
Assert.AreEqual(0, u2.Before.tiles[0].pixels[x2, y2]);
Assert.AreEqual(color2, u2.After.tiles[0].pixels[x2, y2]);
Assert.IsTrue(m_mgr.CanUndo());
Assert.IsFalse(m_mgr.CanRedo());
// Undo the last pixel draw.
m_mgr.ApplyUndo();
Assert.AreEqual(3, m_mgr.Count);
Assert.AreEqual(1, m_mgr.Current);
// Last pencil reverted.
Assert.AreEqual(0, s.GetPixel(x2, y2));
// First pencil still present.
Assert.AreEqual(color1, s.GetPixel(x1, y1));
Assert.IsTrue(m_mgr.CanUndo());
Assert.IsTrue(m_mgr.CanRedo());
// Undo the first pixel draw.
m_mgr.ApplyUndo();
Assert.AreEqual(3, m_mgr.Count);
Assert.AreEqual(0, m_mgr.Current);
// Both pencil marks reverted.
Assert.AreEqual(0, s.GetPixel(x1, y1));
Assert.AreEqual(0, s.GetPixel(x2, y2));
Assert.IsTrue(m_mgr.CanUndo());
Assert.IsTrue(m_mgr.CanRedo());
// Undo the sprite add.
m_mgr.ApplyUndo();
Assert.AreEqual(3, m_mgr.Count);
Assert.AreEqual(-1, m_mgr.Current);
Assert.IsFalse(m_mgr.CanUndo());
Assert.IsTrue(m_mgr.CanRedo());
}