private void RedoButton_Click(object sender, EventArgs e)
{
IFigure tmp = FiguresFrontBuffer.Pop();
gr = Graphics.FromImage(MainPicture);
tmp.DrawPanel = gr;
tmp.Redraw();
FiguresBackBuffer.Push(tmp);
UndoButton.Enabled = true;
pictureBox1.Image = MainPicture;
gr.Dispose();
if (FiguresFrontBuffer.Count == 0)
{
RedoButton.Enabled = false;
}
}
private void button1_Click(object sender, EventArgs e)
{
int N = FiguresBackBuffer.Count;
if (N <= 0)
{
return;
}
if (FiguresFrontBuffer == null)
{
FiguresFrontBuffer = new UndoStack();
}
IFigure Last = FiguresBackBuffer.ElementAt(0);
Last.EndOfCurrentFigure = true;
FiguresFrontBuffer.Push(Last);
FiguresBackBuffer.Pop();
RedoButton.Enabled = true;
gr = Graphics.FromImage(MainPicture);
gr.Clear(pictureBox1.BackColor);
FiguresBackBuffer.DrawStack(gr);
pictureBox1.Image = MainPicture;
if (FiguresBackBuffer.Count <= 0)
{
UndoButton.Enabled = false;
}
IFiguresCreator CurrentCreator = Creators.ElementAt <IFiguresCreator>(comboBox1.SelectedIndex);
CurrentFigure = CurrentCreator.Create(-1, -1, gr, pen, FillColorPanel.BackColor);
}
