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Cache icons so .exe files are not needed to be scanned on loading #15

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Cache icons so .exe files are not needed to be scanned on loading #15

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36 changes: 34 additions & 2 deletions Mint/Forms/MainForm.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -151,6 +151,38 @@ private void LoadOptions()
checkAutoStart.Checked = Options.CurrentOptions.AutoStart;
}

static string Sha256(string randomString)
{
var crypt = new System.Security.Cryptography.SHA256Managed();
var hash = new System.Text.StringBuilder();
byte[] crypto = crypt.ComputeHash(Encoding.UTF8.GetBytes(randomString));
foreach (byte theByte in crypto)
{
hash.Append(theByte.ToString("x2"));
}
return hash.ToString();
}

readonly static string _iconCache = Application.StartupPath + "\\.mint_cache";

private Bitmap ExtractOrLoadIcon(string exeFilePath)
{
_ = Directory.CreateDirectory(_iconCache);
string pathHash = Sha256(exeFilePath);
string iconPath = _iconCache + "\\" + pathHash + ".png";
if (File.Exists(iconPath))
{
return new Bitmap(iconPath);
}
else
{
Bitmap extracted = Icon.ExtractAssociatedIcon(exeFilePath).ToBitmap();
extracted.Save(iconPath);
return extracted;
}

}

private void BuildLauncherMenu()
{
launcherMenu.Items.Clear();
Expand Down Expand Up @@ -185,7 +217,7 @@ private void BuildLauncherMenu()

if (!string.IsNullOrEmpty(x.AppGroup))
{
subItem = new ToolStripMenuItem(x.AppTitle, !isDeadItem ? Icon.ExtractAssociatedIcon(x.AppLink).ToBitmap() : null);
subItem = new ToolStripMenuItem(x.AppTitle, !isDeadItem ? ExtractOrLoadIcon(x.AppLink) : null);
subItem.Click += subItem_Click;
if (!isDeadItem)
{
Expand All @@ -201,7 +233,7 @@ private void BuildLauncherMenu()
}
else
{
i = new ToolStripMenuItem(x.AppTitle, !isDeadItem ? (Icon.ExtractAssociatedIcon(x.AppLink)).ToBitmap() : null);
i = new ToolStripMenuItem(x.AppTitle, !isDeadItem ? (ExtractOrLoadIcon(x.AppLink)) : null);
if (!isDeadItem)
{
i.ForeColor = Color.GhostWhite;
Expand Down