private void FileNew_Click(object sender, EventArgs e)
{
// Tạo File vẽ mới - Hỏi Save File trước khi thực hiện
// Tạo DrawBox mới: tô màu nền trắng, xóa list Undo, Redo và FilePath
var AskForSave = MessageBox.Show(@"Do you want to Save this Image?", @"Save", MessageBoxButtons.YesNoCancel, MessageBoxIcon.Question, MessageBoxDefaultButton.Button1);
if (AskForSave == DialogResult.Cancel)
{
return;
}
else if (AskForSave == DialogResult.Yes)
{
FileSave_Click(null, null);
}
drawBox.Size = new Size(700, 300);
drawBox.Image = new Bitmap(drawBox.Width, drawBox.Height);
drawBox.ClearUndoRedo();
Region region = new Region(new Rectangle(0, 0, drawBox.Width, drawBox.Height));
Graphics _g = Graphics.FromImage(drawBox.Image);
_g.FillRegion(new SolidBrush(Color.White), region);
FilePath = null;
this.Text = "MyPaint";
}
//Constructor tạo DrawBox
public DrawBox()
{
UndoList = new Stack <Bitmap>();
RedoList = new Stack <Bitmap>();
Size = new Size(700, 300);
Image = new Bitmap(Width, Height);
Region region = new Region(new Rectangle(0, 0, Width, Height));
_g = Graphics.FromImage(Image);
_g.FillRegion(new SolidBrush(Color.White), region);
}
