public ScribbleArea Clone()
{
ScribbleArea scr = new ScribbleArea();
scr.min_x = this.min_x;
scr.min_y = this.min_y;
scr.max_x = this.max_x;
scr.max_y = this.max_y;
return(scr);
}
private void toolStripButton8_Click(object sender, EventArgs e)
{
this.toolStripButton6.Enabled = false;
this.toolStripButton7.Enabled = false;
this.g_current.Clear(Color.White);
this.scribbleCanvas1.Invalidate();
this.current_rect = new ScribbleArea();
this.undo_rect = new ScribbleArea();
this.redo_rect = new ScribbleArea();
}
private void toolStripButton7_Click(object sender, EventArgs e)
{
this.toolStripButton6.Enabled = true;
this.toolStripButton7.Enabled = false;
using (Graphics g = Graphics.FromImage(this.undo))
g.DrawImage(this.current, new Point(0, 0));
this.g_current.DrawImage(this.redo, new Point(0, 0));
this.undo_rect = this.current_rect.Clone();
this.current_rect = this.redo_rect.Clone();
this.scribbleCanvas1.Invalidate();
}
private void SetUndo(Point p)
{
if (this.undo == null)
{
this.undo = new Bitmap(396, 396);
}
using (Graphics g = Graphics.FromImage(this.undo))
g.DrawImage(this.current, new Point(0, 0));
this.painting = true;
this.undo_rect = this.current_rect.Clone();
this.last_point = p;
this.toolStripButton6.Enabled = true;
this.toolStripButton7.Enabled = false;
}
public byte[] GetScribble()
{
this.current = new Bitmap(396, 396);
this.g_current = Graphics.FromImage(this.current);
this.g_current.Clear(Color.White);
this.toolStripButton6.Enabled = false;
this.toolStripButton7.Enabled = false;
this.current_rect = new ScribbleArea();
this.undo_rect = new ScribbleArea();
this.redo_rect = new ScribbleArea();
byte[] result = null;
if (this.ShowDialog() == DialogResult.OK)
{
if (this.current_rect.max_x > this.current_rect.min_x && this.current_rect.max_y > this.current_rect.min_y)
{
using (Bitmap sized = new Bitmap((this.current_rect.max_x - this.current_rect.min_x) + 20, (this.current_rect.max_y - this.current_rect.min_y) + 20))
using (Graphics g = Graphics.FromImage(sized))
{
int x1 = this.current_rect.min_x - 10;
int y1 = this.current_rect.min_y - 10;
if (x1 < 0)
{
x1 = 0;
}
if (y1 < 0)
{
y1 = 0;
}
int x2 = sized.Width;
int y2 = sized.Height;
if ((x1 + x2) > 396)
{
x2 -= ((x1 + x2) - 396);
}
if ((y1 + y2) > 396)
{
y2 -= ((y1 + y2) - 396);
}
using (SolidBrush sb = new SolidBrush(Color.White))
g.FillRectangle(sb, new Rectangle(0, 0, sized.Width, sized.Height));
g.DrawImage(this.current, new Rectangle(0, 0, sized.Width, sized.Height), new Rectangle(x1, y1, x2, y2), GraphicsUnit.Pixel);
ImageCodecInfo info = ImageCodecInfo.GetImageEncoders().FirstOrDefault(x => x.MimeType == "image/jpeg");
EncoderParameters encoding = new EncoderParameters();
encoding.Param[0] = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, 75L);
using (MemoryStream ms = new MemoryStream())
{
sized.Save(ms, info, encoding);
result = ms.ToArray();
}
}
}
}
this.g_current.Dispose();
this.g_current = null;
this.current.Dispose();
this.current = null;
if (this.undo != null)
{
this.undo.Dispose();
this.undo = null;
}
if (this.redo != null)
{
this.redo.Dispose();
this.redo = null;
}
return(result);
}
