twobomb

namespace iconGen
{
    public partial class Form1 : Form
    {
        public Form1(){
            InitializeComponent();

            var exts = new List<string>(){
                ".jpg",".png",".gif",".jpeg",".bmp"
            };
            foreach (var ext in exts)
            {
                cbl_exts.Items.Add(ext);
                cbl_exts.SetItemChecked(cbl_exts.Items.Count-1,true);
            }
            tb_savepath.Text = Environment.GetFolderPath(Environment.SpecialFolder.MyPictures);
        }
        public Dictionary<String, Bitmap> scanDir(string path, List<String> extsVal)
        {
            Dictionary<String, Bitmap> result = new Dictionary<string, Bitmap>();
            var dirs = Directory.GetDirectories(path);
            foreach (var dir in dirs){
                if (Directory.GetFiles(dir).Where(s => extsVal.Contains(new FileInfo(s).Extension)).Count() > 0)
                {
                    string name = new FileInfo(dir).Name;
                    string newname = name;
                    for (var i = 1; result.ContainsKey(newname); i++)
                        newname = name + "_" + i;
                    result.Add(newname, createImg(dir, Int32.Parse(tb_width.Text), Int32.Parse(tb_height.Text), Int32.Parse(tb_wh.Text),
                        cb_auto.Checked, Int32.Parse(tb_padding.Text), extsVal));
                }
                var res = scanDir(dir, extsVal);
                foreach (var key in res.Keys){
                    string newname = key;
                    for (var i = 1; result.ContainsKey(newname); i++)
                        newname = key+ "_" + i;
                    Bitmap bm;
                    res.TryGetValue(key, out bm);
                    result.Add(newname, bm);
                    bm.Dispose();
                }
            }
            return result;
        }
        public Bitmap createImg(string path,int imgWidth,int imgHeight,int iconWH,bool isAutoWH,int padding,List<string> exts){
            var files = Directory.GetFiles(path).Where(s => exts.Contains(new FileInfo(s).Extension)).ToArray();
            var count = files.Length;
            if (isAutoWH)
            {
                for (int i = Math.Min(imgWidth, imgHeight); i > 0; i--)
                {
                    var maxCount = Math.Floor((double)imgWidth / i) * Math.Floor((double)imgHeight / i);
                    if (maxCount >= count)
                    {
                        iconWH = i - padding <= 0 ? i : i - padding;
                        break;
                    }
                }
            }

            Bitmap bm = new Bitmap(imgWidth, imgHeight);

            using (Graphics g = Graphics.FromImage(bm))
            {
                for (int i = 0; i < count; i++)
                {
                    var img = Image.FromFile(files[i]);
                    int x = i % (imgWidth / (iconWH + padding)) * (iconWH + padding);
                    int y = (int)(Math.Floor((double)(i / (imgWidth / (iconWH + padding)))) * (iconWH + padding));
                    g.DrawImage(img, x, y, iconWH, iconWH);
                    img.Dispose();
                }
            }
            return bm;
        }

        private void btn_scandir_Click(object sender, EventArgs e)
        {
            FolderBrowserDialog fbd = new FolderBrowserDialog();
            if (fbd.ShowDialog() == DialogResult.OK)
                tb_scandir.Text = fbd.SelectedPath;
        }

        private void btn_savepath_Click(object sender, EventArgs e){
            FolderBrowserDialog fbd = new FolderBrowserDialog();
            if (fbd.ShowDialog() == DialogResult.OK)
                tb_savepath.Text = fbd.SelectedPath;
        }

        private void button1_Click(object sender, EventArgs e){
            try
            {
            List<string> extsVal = new List<string>();
            foreach (var checkedItem in cbl_exts.CheckedItems)
                extsVal.Add(checkedItem as string);
            var t = scanDir(tb_scandir.Text, extsVal);
            var p = new DirectoryInfo(tb_savepath.Text);
            foreach (var key in t.Keys){
                Bitmap bm;
                t.TryGetValue(key, out bm);
                bm.Save(p.FullName + @"\" + key + ".png", ImageFormat.Png);
                bm.Dispose();
            }
            Process.Start("explorer.exe", p.FullName);
            }
            catch (Exception ee)
            {
                MessageBox.Show(ee.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }

        }

        private void cb_auto_CheckedChanged(object sender, EventArgs e)
        {
            tb_wh.ReadOnly = cb_auto.Checked;
        }
    }
}