private void button1_Click(object sender, EventArgs e)
{
String id_user_masuk = dbHandler.ambilIdUser(textBox1.Text);
if (id_user_masuk == "" || id_user_masuk == null)
{
MessageBox.Show("ID line tidak ditemukan. Bila belum ada, daftar ID anda di bot Stegomen Line");
}
else
{
login = new Form1(id_user_masuk);
this.Hide();
if (login.ShowDialog() == DialogResult.None)
{
this.Show();
}
}
}
//////encrypt gambar
private void button2_Click(object sender, EventArgs e)
{
if (textBox4.Text == null || textBox4.Text == "")
{
MessageBox.Show("Kasih ID penerima dari Line tersebut");
}
else if (textBox3.Text == null || textBox3.Text == "")
{
MessageBox.Show("kasih dulu passwordnya untuk kemanan pesan!");
}
else if (textBox1.Text == "" || textBox1.Text == null)
{
MessageBox.Show("Tentukan Path gambar terlebih dahulu");
}
else
{
Bitmap img;
string messagetext = kasihPassword(textBox2.Text, textBox3.Text);
//double textlength = System.Text.ASCIIEncoding.ASCII.GetByteCount(messagetext);
Console.WriteLine("Text length normal: " + messagetext.Length);
//Console.WriteLine("Textlength:" + textlength);
if (messagetext.Length - 2 > loadedImage.Width)
{
MessageBox.Show("Ukuran gambar terlalu besar. Silahkan perpendek teksnya");
}
else
{
String tampung_perbit_pixel = "";
if (AmbilExtensionPNG(textBox1.Text) == false)
{
String direktori = Path.GetDirectoryName(Assembly.GetEntryAssembly().Location);
KonvertPNG(textBox1.Text, direktori);
img = new Bitmap(direktori + "\\temp.png");
//Buat Debugging
Console.WriteLine("----------Berhasil Convert PNG---------");
}
else
{
img = new Bitmap(textBox1.Text);
Console.WriteLine("----------TIDAK CONVERT---------");
}
Console.WriteLine("Panjang textbox 2: " + textBox2.TextLength);
int tampung_panjang_karakter = textBox2.TextLength;
//Looping per karakter
for (int indeks_karakter = 0; indeks_karakter < messagetext.Length; indeks_karakter++)
{
char karakter = Convert.ToChar(messagetext.Substring(indeks_karakter, 1));
int value = Convert.ToInt32(karakter);
String char_binary = Convert.ToString(value, 2);
Console.WriteLine("VALUE CHAR = " + value + " BINER CHAR = " + char_binary);
//looping per 1 bit di LSB masukin pixelnya
for (int i = 0; i < char_binary.Length; i++)
{
Console.WriteLine("LOOP BIT ========" + i);
char tampung = Convert.ToChar(char_binary.Substring(i, 1));
Color pixel = img.GetPixel(indeks_karakter, i);
int pixel_B_value = pixel.B;
Console.WriteLine("PIXEL B = " + pixel_B_value);
String biner_pixel_B = Convert.ToString(pixel_B_value, 2);
Console.WriteLine("BINER_PIXEL = " + biner_pixel_B);
String ubahbit = library.ubah_bit(biner_pixel_B, tampung);
Console.WriteLine("UBAH BIT = " + ubahbit);
int newBinary_pixelB = Convert.ToInt32(ubahbit, 2);
Console.WriteLine(newBinary_pixelB);
img.SetPixel(indeks_karakter, i, Color.FromArgb(pixel.R, pixel.G, newBinary_pixelB));
}
//tampung indeks perbit di satu pixel agar nanti waktu decrypt bisa di fetch diambil length nya
tampung_perbit_pixel = tampung_perbit_pixel + char_binary.Length + "-";
}
//insert status dan indeks bit pixel ke database serta id penerimanya
dbHandler.insertDatabase(tampung_perbit_pixel, dbHandler.ambilIdUser(textBox4.Text));
Color pixelTerakhir = img.GetPixel(img.Width - 1, img.Height - 1);
//tampung messageID di pixel paling kanan bawah
int id_pesan = dbHandler.getLastMessageID();
Console.WriteLine("MESSAGE IDNYA DIMASUKIN = " + id_pesan);
img.SetPixel(img.Width - 1, img.Height - 1, Color.FromArgb(pixelTerakhir.R, pixelTerakhir.B, id_pesan));
Console.WriteLine("PANJANG PERINDEKS: " + tampung_perbit_pixel);
SaveFileDialog saveFile = new SaveFileDialog();
saveFile.Filter = "Recommended!!!! (*.png) | *.png|Common Images(*.jpg)|*.jpg";
saveFile.InitialDirectory = @"C:\Users\";
if (saveFile.ShowDialog() == DialogResult.OK)
{
textBox1.Text = saveFile.FileName.ToString();
pictureBox1.ImageLocation = textBox1.Text;
img.Save(textBox1.Text);
}
MessageBox.Show("Gambar berhasil Disimpan!");
//kirim notif ada yang buat pesan rahasia ke dia
if (library.sendToPenerima(dbHandler.ambilIdUser(textBox4.Text), dbHandler.ekstrakUserName(id_user_masuk), id_pesan) != "berhasil")
{
//MessageBox.Show("Gagal mengirim ke line penerima anda");
}
img.Dispose();
File.Delete(Path.GetDirectoryName(Assembly.GetEntryAssembly().Location) + "\\temp.png");
textBox2.Text = "";
}
}
}
