/// <summary>
/// アーカイブファイルからサムネイル用画像データを取得する
/// </summary>
/// <param name="path"></param>
/// <param name="thumWidth"></param>
/// <returns></returns>
public static async Task <BitmapImage> GetFirstImageFromArchive(string path, int thumWidth)
{
BitmapImage bitmap = null;
StorageFile zipFile = await StorageFile.GetFileFromPathAsync(path);
using (IRandomAccessStream randomStream = await zipFile.OpenReadAsync())
{
using (Stream stream = randomStream.AsStreamForRead())
{
using (ZipArchive zipArchive = new ZipArchive(stream))
{
foreach (ZipArchiveEntry entry in zipArchive.Entries)
{
if (FileKind.IsImageFile(entry.FullName))
{
bitmap = await BitmapUtils.CreateBitmap(entry, thumWidth);
break;
}
}
}
}
}
return(bitmap);
}
/// <summary>
/// ZIPデータを読み込みファイル一覧を作成する
/// </summary>
/// <returns></returns>
public async Task LoadDataAsync()
{
this.Dispose();
this.m_dataList.Clear();
StorageFile zipFile = await StorageFile.GetFileFromPathAsync(m_imageParam.Path);
StorageHistoryManager.AddStorage(zipFile, StorageHistoryManager.DataType.Latest);
this.ParentStorage = zipFile;
IRandomAccessStream randomStream = await zipFile.OpenReadAsync();
Stream stream = randomStream.AsStreamForRead();
m_zipArchive = new ZipArchive(stream);
foreach (ZipArchiveEntry entry in m_zipArchive.Entries)
{
if (FileKind.IsImageFile(entry.FullName))
{
m_dataList.Add(entry);
}
}
sortList(m_dataList);
//名前の順に並び替え
foreach (ZipArchiveEntry entry in m_dataList)
{
Debug.WriteLine(entry.Name);
}
}
public static async Task <BitmapImage> CreateBitmapFromArchiveCover(string path, int thumWidth)
{
StorageFolder folder = await EnvPath.GetArchiveCoverFolder();
string fileName = EnvPath.GetArchiveCoverFileName(path);
IStorageItem imageFile = await folder.TryGetItemAsync(fileName);
if (imageFile == null)
{
using (await m_asyncLock.LockAsync())
{
StorageFile coverFile = await folder.CreateFileAsync(fileName, CreationCollisionOption.ReplaceExisting);
StorageFile zipFile = await StorageFile.GetFileFromPathAsync(path);
using (IRandomAccessStream randomStream = await zipFile.OpenReadAsync())
{
using (Stream stream = randomStream.AsStreamForRead())
{
using (ZipArchive zipArchive = new ZipArchive(stream))
{
foreach (ZipArchiveEntry entry in zipArchive.Entries)
{
if (FileKind.IsImageFile(entry.FullName))
{
/*
* WriteableBitmap writeableBitmap = await createWriteableBitmap(entry);
* await saveToJpegFile(writeableBitmap, coverFile);
* imageFile = await folder.GetFileAsync(fileName);
*/
imageFile = await SaveToFileFromZipEntry(entry, coverFile);
break;
}
}
}
}
}
}
}
if (imageFile != null)
{
return(await CreateThumbnailBitmap(imageFile, (uint)thumWidth));
}
else
{
return(null);
}
}