galleryimage.cs

本系统是在asp版《在线文件管理器》的基础上设计制作

//------------------------------------------------------------------------------
// <copyright company="Telligent Systems">
//     Copyright (c) Telligent Systems Corporation.  All rights reserved.
// </copyright> 
//------------------------------------------------------------------------------

using System;
using System.ComponentModel;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using CommunityServer.Components;
using CommunityServer.Galleries.Components;

namespace CommunityServer.Galleries.Controls
{

	public class GalleryImage : Control
	{

		#region Protected Members

		protected GalleryImageSettings settings = new GalleryImageSettings();
		protected GalleryImageSettings secondarySettings = new GalleryImageSettings();
        protected string imageIDprefix = "SmallThumb";

		#endregion

		#region Public Properties

		private GalleryImageType imageType = GalleryImageType.Thumbnail;
		public GalleryImageType ImageType
		{
			get { return imageType; }
			set { imageType = value; }
		}

		[DefaultValue( "" )]
		private string imageUrl = string.Empty;
		public string ImageUrl
		{
			get { return imageUrl; }
			set { imageUrl = value; }
		}

		[DefaultValue( "" )]
		private string secondaryImageUrl = string.Empty;
		public string SecondaryImageUrl
		{
			get { return secondaryImageUrl; }
			set { secondaryImageUrl = value; }
		}

		[DefaultValue( "" )]
		private string navigateUrl = string.Empty;
		public string NavigateUrl
		{
			get { return navigateUrl; }
			set { navigateUrl = value; }
		}

		[DefaultValue( false )]
		private bool enableSecondaryThumbnail = false;
		public bool EnableSecondaryThumbnail
		{
			get { return enableSecondaryThumbnail; }
			set { enableSecondaryThumbnail = value; }
		}

		[DefaultValue( -1 )]
		private int postID = -1;
		public int PostID
		{
			get { return postID; }
			set
			{
				postID = value;
				picture = null;
			}
		}

		[DefaultValue( true )]
		private bool usePhotoCache = true;
		public bool UsePhotoCache
		{
			get { return usePhotoCache; }
			set { usePhotoCache = value; }
		}

		[DefaultValue( 0 )]
		private int border = 0;
		public int Border
		{
			get { return border; }
			set { border = value; }
		}

		private string cssClass = string.Empty;
		public string CssClass
		{
			get { return cssClass; }
			set { cssClass = value; }
		}

		private string style = string.Empty;
		public string Style
		{
			get { return style; }
			set { style = value; }
		}

		private int width = 100;
		public int Width
		{
			get { return width; }
			set { width = value; }
		}

		private int height = 75;
		public int Height
		{
			get { return height; }
			set { height = value; }
		}

		private int quality = 70;
		public int Quality
		{
			get { return quality; }
			set { quality = value; }
		}

		private Picture picture = null;
		public Picture Picture
		{
			get { return picture; }
			set
			{
				picture = value;
				if(picture != null)
					postID = picture.PostID;
			}
		}

		#endregion

		#region Constructor

		public GalleryImage() { }

		public GalleryImage(GalleryImageType imageType) : this()
		{
			this.ImageType = imageType;
		}

		public GalleryImage(GalleryImageType imageType, Picture picture)
		{
			this.ImageType = imageType;
			this.Picture = picture;
		}

		#endregion

		#region Methods

		protected virtual void LoadPicture()
		{
			if(picture == null)
			{
				if(postID != -1)
					Picture = Pictures.GetPicture(PostID);
				else if(CSContext.Current.PostID != -1)
					Picture = Pictures.GetPicture(CSContext.Current.PostID);
			}
		}

		public virtual void ProcessPicture()
		{
			// If there is no PostID, then there is nothing to process, return;
			LoadPicture();
			if(ImageType == GalleryImageType.Folder)
				picture = new Picture();
			if(picture == null)
				return;

			// If this is not an image, turn off the large thumbnail popups
			if(EnableSecondaryThumbnail && !picture.ContentType.StartsWith("image"))
				EnableSecondaryThumbnail = false;

			// Find out which image type, put in the default settings, and scale it
			if(picture.IsPicture)
			{
				switch(ImageType)
				{
					case GalleryImageType.Micro:
						settings = new GalleryImageSettings(((Gallery)picture.Section).ThumbnailX, ((Gallery)picture.Section).ThumbnailY , ((Gallery)picture.Section).ThumbnailQuality, true, false, false);
						settings.Brightness = ((Gallery)picture.Section).ThumbnailBrightness;
						ScalePicture();
						if(settings.OriginalSize == false)
							ImageUrl = GalleryUrls.Instance().PictureUrl(((Gallery)picture.Section).ApplicationKey, picture.PostID, ImageType);
						break;

					case GalleryImageType.Gallery:
						settings = new GalleryImageSettings(((Gallery)picture.Section).SecondaryThumbnailX, ((Gallery)picture.Section).SecondaryThumbnailY, ((Gallery)picture.Section).SecondaryThumbnailQuality, true, false, false);
						ScalePicture();
						if(settings.OriginalSize == false)
							ImageUrl = GalleryUrls.Instance().PictureUrl(((Gallery)picture.Section).ApplicationKey, picture.PostID, ImageType);
						break;

					case GalleryImageType.Original:
						settings.OriginalSize = true;
						break;

					case GalleryImageType.Thumbnail:
						if(EnableSecondaryThumbnail)
						{
							secondarySettings = new GalleryImageSettings(((Gallery)picture.Section).SecondaryThumbnailX, ((Gallery)picture.Section).SecondaryThumbnailY, ((Gallery)picture.Section).SecondaryThumbnailQuality, true, false, false);
							ScalePicture(GalleryImageType.SecondaryThumbnail, secondarySettings);
							if(secondarySettings.OriginalSize == false)
								SecondaryImageUrl = GalleryUrls.Instance().PictureUrl(((Gallery)picture.Section).ApplicationKey, picture.PostID, GalleryImageType.SecondaryThumbnail);
							else
								SecondaryImageUrl = GalleryUrls.Instance().PictureUrl(((Gallery)picture.Section).ApplicationKey, picture.PostID);
						}
						settings = new GalleryImageSettings(((Gallery)picture.Section).ThumbnailX, ((Gallery)picture.Section).ThumbnailY, ((Gallery)picture.Section).ThumbnailQuality, true, false, false);
						settings.Brightness = ((Gallery)picture.Section).ThumbnailBrightness;
						ScalePicture();
						if(settings.OriginalSize == false)
							ImageUrl = GalleryUrls.Instance().PictureUrl(((Gallery)picture.Section).ApplicationKey, picture.PostID, ImageType);
						break;

					case GalleryImageType.SecondaryThumbnail:
						settings = new GalleryImageSettings(((Gallery)picture.Section).SecondaryThumbnailX, ((Gallery)picture.Section).SecondaryThumbnailY, ((Gallery)picture.Section).SecondaryThumbnailQuality, true, false, false);
						ScalePicture();
						if(settings.OriginalSize == false)
							ImageUrl = GalleryUrls.Instance().PictureUrl(((Gallery)picture.Section).ApplicationKey, picture.PostID, ImageType);
						break;

					case GalleryImageType.Details:
						settings = new GalleryImageSettings(((Gallery)picture.Section).PictureDetailsX, ((Gallery)picture.Section).PictureDetailsY, ((Gallery)picture.Section).PictureDetailsQuality, true, false, false);
						ScalePicture();
						if(settings.OriginalSize == false)
							ImageUrl = GalleryUrls.Instance().PictureUrl(((Gallery)picture.Section).ApplicationKey, picture.PostID, settings.Width, settings.Height);
						break;

					case GalleryImageType.Folder:
						settings.Width = 60;
						settings.Height = 56;
						string path = GalleryUrls.Instance().Home;
						path = path.Substring(0, path.LastIndexOf("/"));
						ImageUrl = path + "/default_highlight_image.gif";
						break;

					case GalleryImageType.Slideshow:
						settings = new GalleryImageSettings(((Gallery)picture.Section).SlideshowX, ((Gallery)picture.Section).SlideshowY, ((Gallery)picture.Section).SlideshowQuality, true, false, false);
						ScalePicture();
						if(settings.OriginalSize == false)
							ImageUrl = GalleryUrls.Instance().PictureUrl(((Gallery)picture.Section).ApplicationKey, picture.PostID, settings.Width, settings.Height);
						break;

					case GalleryImageType.Other:
						settings = new GalleryImageSettings(width, height, quality, true);
						ScalePicture();
						if(settings.OriginalSize == false)
							ImageUrl = GalleryUrls.Instance().PictureUrl(((Gallery)picture.Section).ApplicationKey, picture.PostID, settings.Width, settings.Height);
						break;

					default:
						ImageUrl = "";
						break;
				}