/// <summary>
/// Gets current map preview as a bitmap.
/// </summary>
/// <returns>Map preview as a bitmap. Null if the preview could not be loaded.</returns>
public Bitmap GetMapPreview()
{
if (previewBitmap != null)
{
return(previewBitmap);
}
string[] keys = GetKeys("PreviewPack");
if (keys == null || keys.Length == 0)
{
return(null);
}
int previewWidth = PreviewWidth;
int previewHeight = PreviewHeight;
if (previewWidth < 1 || previewHeight < 1)
{
return(null);
}
StringBuilder sb = new StringBuilder();
foreach (string key in keys)
{
sb.Append(GetKey("PreviewPack", key, string.Empty));
}
byte[] dataDest = new byte[previewWidth * previewHeight * 3];
string errorMsg = MapPackHelper.ParseMapPackData(sb.ToString(), ref dataDest);
if (errorMsg != null)
{
return(null);
}
previewBitmap = GraphicsUtils.CreateBitmapFromImageData(previewWidth, previewHeight, dataDest);
return(previewBitmap);
}
/// <summary>
/// Parses and decompresses Base64-encoded and compressed data from specified section of map file.
/// </summary>
/// <param name="sectionName">Name of the section.</param>
/// <param name="outputData">Array to put the decompressed data to.</param>
/// <param name="useLCW">If set to true, treat data as LCW-compressed instead of LZO.</param>
/// <returns>Error message if something went wrong, otherwise null.</returns>
private string ParseEncodedMapSectionData(string sectionName, ref byte[] outputData, bool useLCW = false)
{
Logger.Info("Parsing " + sectionName + ".");
string[] values = GetValues(sectionName);
string msgStart = "Error parsing " + sectionName + ": ";
if (values == null || values.Length < 1)
{
return(msgStart + "Data is empty.");
}
string errorMsg = MapPackHelper.ParseMapPackData(values, ref outputData, useLCW);
if (errorMsg != null)
{
return(msgStart + errorMsg);
}
return(null);
}