Membuat Aplikasi Image Resizer C#

Aplikasi ini adalah adaptasi dari modul pada mata kuliah Network Programming II. Aplikasi ini dapat me-resize image dengan format .jpg sesuai keinginan, memperbesar atau memperkecil tinggi dan lebar menggunakan toolbox TrackBar ditambah dengan button rotate dan reset.

1. Bahan - bahan toolbox nya ada pada tabel dibawah ini :

2. Tampilan Form

3. Listing Program

Judul Spoiler:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Drawing.Imaging;
using System.Drawing.Drawing2D;

namespace image_resizer
{
    public partial class Form1 : Form
    {

        Bitmap newB;
        Image gambar;
        Boolean opened = false;

        public Form1()
        {
            InitializeComponent();
            this.StartPosition = FormStartPosition.CenterScreen;
            this.FormBorderStyle = FormBorderStyle.FixedSingle;
            this.MaximizeBox = false;
            this.MinimizeBox = false;
            tsize.MaxLength = 3;
            tsize.Enabled = false;
            trackBar1.Enabled = false;
            trackBar2.Enabled = false;
            btnResize.Enabled = false;
            btnReset.Enabled = false;
            btnRotate.Enabled = false;
            bsimpan.Enabled = false;
            panel1.AutoScroll = true;
            
        }

        void bukagambar()
        {
            DialogResult bukagambar = openFileDialog1.ShowDialog();
            if (bukagambar == DialogResult.OK)
            {
                gambar = Image.FromFile(openFileDialog1.FileName);
                newB = new Bitmap(openFileDialog1.FileName);
                picture.Image = gambar;
                opened = true;
                picture.SizeMode = PictureBoxSizeMode.StretchImage;
                picture.ImageLocation = openFileDialog1.FileName;
                ltinggi.Text = gambar.Height.ToString();
                llebar.Text = gambar.Width.ToString();
                trackBar1.Value = picture.Size.Width;
                trackBar2.Value = picture.Size.Height;
                trackBar1.Enabled = true;
                trackBar2.Enabled = true;
                btnResize.Enabled = true;
                btnReset.Enabled = true;
                btnRotate.Enabled = true;
                bsimpan.Enabled = true;
                tsize.Enabled = true;
                tsize.Clear();
            }
        }

        void ubahsize()
        {
            if (tsize.Text != "")
            {
                int persen = Convert.ToInt32(tsize.Text);
                int tinggi = (persen * Convert.ToInt32(ltinggi.Text)) / 100;
                int lebar = (persen * Convert.ToInt32(llebar.Text)) / 100;
                ltinggi.Text = Convert.ToString(tinggi);
                llebar.Text = Convert.ToString(lebar);
                trackBar1.Value = lebar;
                trackBar2.Value = tinggi;
                picture.Size = new Size(picture.Size.Width, trackBar1.Value);
                picture.Size = new Size(picture.Size.Height, trackBar2.Value);
            }
        }

        void simpangambar()
        {
            if (picture.Image != null)
            {
                int tinggi = Convert.ToInt32(ltinggi.Text);
                int lebar = Convert.ToInt32(llebar.Text);
                Bitmap ukuranbaru = new Bitmap(lebar, tinggi,
                System.Drawing.Imaging.PixelFormat.Format24bppRgb);
                Graphics gbr = Graphics.FromImage(ukuranbaru);
                gbr.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighSpeed;
                gbr.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighSpeed;
                gbr.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
                gbr.PixelOffsetMode = System.Drawing.Drawing2D.PixelOffsetMode.HighSpeed;
                Rectangle rect = new Rectangle(0, 0, lebar, tinggi);
                gbr.DrawImage(gambar, rect);
                SaveFileDialog simpan = new SaveFileDialog();
                simpan.Filter = "Jpeg Format|*.Jpg";
                simpan.RestoreDirectory = true;

                if (simpan.ShowDialog() != DialogResult.Cancel)
                {
                    this.picture.Image.Save(simpan.FileName);
                    ukuranbaru.Dispose();
                    MessageBox.Show("Gambar Berhasil Disimpan", "Info");
                }
            }

            else
            {
                MessageBox.Show("Gambar Masih Kosong");
            }
        }

        private void Bbuka_Click(object sender, EventArgs e)
        {
            bukagambar();
        }

        private void btnResize_Click(object sender, EventArgs e)
        {
            ubahsize();
        }

        private void bsimpan_Click(object sender, EventArgs e)
        {
            simpangambar();
        }

        private void trackBar1_Scroll(object sender, EventArgs e)
        {
            picture.Size = new Size(trackBar1.Value, picture.Size.Height);
            llebar.Text = trackBar1.Value.ToString();
        }


        private void trackBar2_Scroll(object sender, EventArgs e)
        {
            picture.Size = new Size(picture.Size.Width, trackBar2.Value);
            ltinggi.Text = trackBar2.Value.ToString();
        }

        private void btnRotate_Click(object sender, EventArgs e)
        {
            newB.RotateFlip(RotateFlipType.Rotate90FlipXY);
            picture.Image = newB;
            ltinggi.Text = gambar.Width.ToString();
            llebar.Text = gambar.Height.ToString();
            trackBar1.Value = picture.Size.Width;
            trackBar2.Value = picture.Size.Height;
            picture.Size = new Size(picture.Size.Width, trackBar2.Value);
            picture.Size = new Size(picture.Size.Height, trackBar1.Value);
        }

        private void btnReset_Click(object sender, EventArgs e)
        {
            if (opened)
            {
                gambar = Image.FromFile(openFileDialog1.FileName);
                newB = new Bitmap(openFileDialog1.FileName);
                picture.Image = gambar;
                opened = true;
                picture.SizeMode = PictureBoxSizeMode.StretchImage;
                picture.ImageLocation = openFileDialog1.FileName;
                ltinggi.Text = gambar.Height.ToString();
                llebar.Text = gambar.Width.ToString();
                trackBar1.Value = picture.Size.Width;
                trackBar2.Value = picture.Size.Height;
                int tinggi = Convert.ToInt32(ltinggi.Text);
                int lebar = Convert.ToInt32(llebar.Text);
                ltinggi.Text = Convert.ToString(tinggi);
                llebar.Text = Convert.ToString(lebar);
                trackBar1.Value = lebar;
                trackBar2.Value = tinggi;
                picture.Size = new Size(picture.Size.Width, trackBar1.Value);
                picture.Size = new Size(picture.Size.Height, trackBar2.Value);
            }

            else { }
        }
    }

}

3. Running Program