/// <summary>
/// 上传头像
/// </summary>
/// <param name="userId">用户ID</param>
/// <param name="postedFile">上传的二进制头像文件</param>
public static void UploadOriginalAvatar(this IUserService userService, long userId, Stream postedFile)
{
if (postedFile == null)
{
return;
}
Image image = Image.FromStream(postedFile);
IUserProfileSettingsManager userProfileSettingsManager = DIContainer.Resolve <IUserProfileSettingsManager>();
UserProfileSettings userProfileSettings = userProfileSettingsManager.GetUserProfileSettings();
//检查是否需要缩放原图
if (image.Height > userProfileSettings.OriginalAvatarHeight || image.Width > userProfileSettings.OriginalAvatarWidth)
{
postedFile = ImageProcessor.Resize(postedFile, userProfileSettings.OriginalAvatarWidth, userProfileSettings.OriginalAvatarHeight, ResizeMethod.KeepAspectRatio);
}
string relativePath = GetAvatarRelativePath(userId);
IStoreProvider storeProvider = DIContainer.Resolve <IStoreProvider>();
storeProvider.AddOrUpdateFile(relativePath, GetAvatarFileName(userId, AvatarSizeType.Original), postedFile);
postedFile.Dispose();
//1、如果原图超过一定尺寸（可以配置宽高像素值）则原图保留前先缩小（原图如果太大，裁剪时不方便操作）再保存
}
/// <summary>
/// 根据用户自己选择的尺寸及位置进行头像裁剪
/// </summary>
/// <param name="userId">用户Id</param>
/// <param name="srcWidth">需裁剪的宽度</param>
/// <param name="srcHeight">需裁剪的高度</param>
/// <param name="srcX">需裁剪的左上角点坐标</param>
/// <param name="srcY">需裁剪的左上角点坐标</param>
public static void CropAvatar(this IUserService userService, long userId, float srcWidth, float srcHeight, float srcX, float srcY)
{
IStoreProvider storeProvider = DIContainer.Resolve <IStoreProvider>();
IStoreFile iStoreFile = storeProvider.GetFile(GetAvatarRelativePath(userId), GetAvatarFileName(userId, AvatarSizeType.Original));
if (iStoreFile == null)
{
return;
}
User user = GetFullUser(userService, userId);
if (user == null)
{
return;
}
bool isFirst = !(user.HasAvatar);
string avatarRelativePath = GetAvatarRelativePath(userId).Replace(Path.DirectorySeparatorChar, '/');
avatarRelativePath = avatarRelativePath.Substring(AvatarDirectory.Length + 1);
user.Avatar = avatarRelativePath + "/" + userId;
IUserRepository userRepository = userService.GetUserRepository();
userRepository.UpdateAvatar(user, user.Avatar);
IUserProfileSettingsManager userProfileSettingsManager = DIContainer.Resolve <IUserProfileSettingsManager>();
UserProfileSettings userProfileSettings = userProfileSettingsManager.GetUserProfileSettings();
using (Stream fileStream = iStoreFile.OpenReadStream())
{
Stream bigImage = ImageProcessor.Crop(fileStream, new Rectangle((int)srcX, (int)srcY, (int)srcWidth, (int)srcHeight), userProfileSettings.AvatarWidth, userProfileSettings.AvatarHeight);
Stream smallImage = ImageProcessor.Resize(bigImage, userProfileSettings.SmallAvatarWidth, userProfileSettings.SmallAvatarHeight, ResizeMethod.KeepAspectRatio);
storeProvider.AddOrUpdateFile(GetAvatarRelativePath(userId), GetAvatarFileName(userId, AvatarSizeType.Big), bigImage);
storeProvider.AddOrUpdateFile(GetAvatarRelativePath(userId), GetAvatarFileName(userId, AvatarSizeType.Small), smallImage);
bigImage.Dispose();
smallImage.Dispose();
fileStream.Close();
}
EventBus <User, CropAvatarEventArgs> .Instance().OnAfter(user, new CropAvatarEventArgs(isFirst));
//触发用户更新头像事件
}
/// <summary>
/// 显示头像
/// </summary>
/// <param name="user">用户对象</param>
/// <param name="avatarSizeType">头像尺寸类别</param>
/// <param name="link">链接到用户空间的地址</param>
/// <param name="navigateTarget">链接类型</param>
/// <param name="enableCachingInClient">是否允许在客户端缓存</param>
/// <param name="htmlAttributes">html属性，例如：new RouteValueDictionary{{"Class","editor"},{"width","90%"}}</param>
/// <returns></returns>
public static MvcHtmlString ShowUserAvatar(this HtmlHelper htmlHelper, IUser user, string link, AvatarSizeType avatarSizeType = AvatarSizeType.Medium, HyperLinkTarget navigateTarget = HyperLinkTarget._blank, bool enableCachingInClient = true, RouteValueDictionary htmlAttributes = null, bool isShowUserCard = true, bool isShowTitle = false)
{
string avatarUrl = SiteUrls.Instance().UserAvatarUrl(user, avatarSizeType, enableCachingInClient);
TagBuilder img = new TagBuilder("img");
if (htmlAttributes != null)
{
img.MergeAttributes(htmlAttributes);
}
img.MergeAttribute("src", avatarUrl);
if (user != null)
{
img.MergeAttribute("alt", user.DisplayName);
if (isShowTitle)
{
img.MergeAttribute("title", user.DisplayName);
}
}
IUserProfileSettingsManager userProfileSettingsManager = DIContainer.Resolve <IUserProfileSettingsManager>();
UserProfileSettings userProfileSettings = userProfileSettingsManager.GetUserProfileSettings();
TagBuilder div = new TagBuilder("div");
switch (avatarSizeType)
{
case AvatarSizeType.Big:
img.MergeAttribute("width", userProfileSettings.AvatarWidth.ToString());
div.AddCssClass("tn-avatar-big");
break;
case AvatarSizeType.Medium:
img.MergeAttribute("width", userProfileSettings.MediumAvatarWidth.ToString());
div.AddCssClass("tn-avatar-medium");
break;
case AvatarSizeType.Small:
img.MergeAttribute("width", userProfileSettings.SmallAvatarWidth.ToString());
div.AddCssClass("tn-avatar");
break;
case AvatarSizeType.Micro:
img.MergeAttribute("width", userProfileSettings.MicroAvatarWidth.ToString());
div.AddCssClass("tn-avatar-mini");
break;
}
if (!string.IsNullOrEmpty(link) && user != null)
{
TagBuilder a = new TagBuilder("a");
a.MergeAttribute("href", link);
if (navigateTarget != HyperLinkTarget._self)
{
a.MergeAttribute("target", navigateTarget.ToString());
}
if (isShowUserCard)
{
a.MergeAttribute("plugin", "tipsyHoverCard");
a.MergeAttribute("data-user-card-url", SiteUrls.Instance()._UserCard(user.UserId));
a.MergeAttribute("outerclass", "tn-user-card");
}
a.InnerHtml = img.ToString(TagRenderMode.SelfClosing);
div.InnerHtml = a.ToString();
return(new MvcHtmlString(div.ToString()));
}
else
{
div.InnerHtml = img.ToString(TagRenderMode.SelfClosing);
return(new MvcHtmlString(div.ToString()));
}
}
