public static bool ImageExists(string imgNameWithoutExt, out ImageEntity img)
{
if (string.IsNullOrEmpty(imgNameWithoutExt))
{
throw new ArgumentNullException("imgNameWithoutExt");
}
using (var dc = new MyDataContext())
{
img = dc.ImageTable.FirstOrDefault(p => p.ImgNameWithoutExt == imgNameWithoutExt);
return(img != null);
}
}
public static void InsertIfNotExist(ImageEntity imgEntity)
{
if (null == imgEntity)
{
throw new ArgumentNullException("imgEntity");
}
using (var dc = new MyDataContext())
{
var entity = dc.ImageTable.FirstOrDefault(i => i.Id == imgEntity.Id);
if (null != entity)
{
return;
}
dc.ImageTable.InsertOnSubmit(imgEntity);
dc.SafeSubmitChanges();
}
}
public static void ModifyIfExist(ImageEntity entity)
{
if (null == entity)
{
throw new ArgumentNullException("entity");
}
using (var dc = new MyDataContext())
{
var pic = dc.ImageTable.FirstOrDefault(p => p.Id == entity.Id);
if (null == pic)
{
return;
}
pic.ImgLocalSavePath = entity.ImgLocalSavePath;
pic.BelongedNotePath = entity.BelongedNotePath;
pic.ImgRemoteUrl = entity.ImgRemoteUrl;
dc.SafeSubmitChanges();
}
}
/// <summary>
/// Download and save image to local.
/// </summary>
/// <param name="belongedNotePath">The path of belonged note.</param>
/// <param name="imgNode">The image HtmlNode object.</param>
/// <param name="imgRemoteUrl">The remote url of the image.</param>
/// <param name="imgNameWithoutExt">The image name without extension.</param>
/// <returns></returns>
private string downloadAndSaveImageToLocal(string belongedNotePath, HtmlNode imgNode, string imgRemoteUrl, string imgNameWithoutExt)
{
Debug.WriteLine("Thread Id: " + Thread.CurrentThread.ManagedThreadId + " downloadAndSaveImageToLocal: " + imgRemoteUrl);
var res = _api.DownloadAttach(imgRemoteUrl);
var imgType = ImageUtil.GetImageType(res.Buffer);
var localPath = "Images\\" + imgNameWithoutExt + "." + imgType;
double width;
if (imgNode.Attributes.Contains("width"))
{
if (Double.TryParse(imgNode.Attributes["width"].Value, out width))
{
if (width > _screenWidth)
{
width = _screenWidth - 25;
}
}
imgNode.Attributes["width"].Value = width.ToString(CultureInfo.InvariantCulture);
}
else
{
var actualSize = ImageUtil.GetImageSize(imgType, res.Buffer);
width = actualSize.Width > _screenWidth ? _screenWidth - 25 : actualSize.Width;
imgNode.Attributes.Add("width", width.ToString(CultureInfo.InvariantCulture));
}
// Save to disk.
var savePath = IsoStoreUtil.SaveToIsoStore(localPath, res.Buffer);
// Save to db.
var imageEntity = new ImageEntity(imgNameWithoutExt, imgType.ToString(), savePath, imgRemoteUrl, belongedNotePath);
ImageDao.InsertIfNotExist(imageEntity);
return savePath;
}
public static bool ImageExists(string imgNameWithoutExt, out ImageEntity img)
{
if (string.IsNullOrEmpty(imgNameWithoutExt))
{
throw new ArgumentNullException("imgNameWithoutExt");
}
using (var dc = new MyDataContext())
{
img = dc.ImageTable.FirstOrDefault(p => p.ImgNameWithoutExt == imgNameWithoutExt);
return (img != null);
}
}
public static void ModifyIfExist(ImageEntity entity)
{
if (null == entity)
{
throw new ArgumentNullException("entity");
}
using (var dc = new MyDataContext())
{
var pic = dc.ImageTable.FirstOrDefault(p => p.Id == entity.Id);
if (null == pic) return;
pic.ImgLocalSavePath = entity.ImgLocalSavePath;
pic.BelongedNotePath = entity.BelongedNotePath;
pic.ImgRemoteUrl = entity.ImgRemoteUrl;
dc.SafeSubmitChanges();
}
}
public static void InsertIfNotExist(ImageEntity imgEntity)
{
if (null == imgEntity)
{
throw new ArgumentNullException("imgEntity");
}
using (var dc = new MyDataContext())
{
var entity = dc.ImageTable.FirstOrDefault(i => i.Id == imgEntity.Id);
if (null != entity) return;
dc.ImageTable.InsertOnSubmit(imgEntity);
dc.SafeSubmitChanges();
}
}
