galleryimage.cs

本系统是在asp版《在线文件管理器》的基础上设计制作

				if(settings.OriginalSize == true)
					ImageUrl = GalleryUrls.Instance().PictureUrl(((Gallery)picture.Section).ApplicationKey, picture.PostID);
			}
			else
			{
				settings = new GalleryImageSettings(39, 48, 100, false, false, false);
				ImageUrl = Globals.GetSiteUrls().Locations["galleries"] + "default_file_image.gif";
			}

		}

		protected void ScalePicture()
		{
			ScalePicture(ImageType, settings);
		}

		protected virtual void ScalePicture(GalleryImageType type, GalleryImageSettings secondarySettings)
		{
			if(picture.IsPicture)
			{
				ImageHandling.GetMaintainedRatio(picture, secondarySettings);
				string filename = Picture.CacheFilename(((Gallery)picture.Section).SectionID, picture.PostID, type, secondarySettings.Width, secondarySettings.Height);
				ImageHandling.ScalePicture(filename, picture, secondarySettings);
			}
		}

		#endregion

		#region Control Event Overrides

		protected override void OnInit(EventArgs e)
		{
			base.OnInit(e);
			PostID = CSContext.Current.PostID;
		}

		protected override void OnPreRender(EventArgs e)
		{
			ProcessPicture();
			base.OnPreRender(e);
		}

		protected override void Render(HtmlTextWriter writer)
		{
			if(picture == null)
				return;

			HtmlAnchor a = new HtmlAnchor();
			HtmlImage img = new HtmlImage();

			bool secondaryPopup = false;

			if(EnableSecondaryThumbnail)
			{
				Gallery gallery = picture.Section as Gallery;
				if((gallery.ThumbnailX != gallery.SecondaryThumbnailX) || (gallery.ThumbnailY != gallery.SecondaryThumbnailY))
					secondaryPopup = true;
			}

			if(NavigateUrl != string.Empty)
			{
				a.HRef = NavigateUrl;
			}

			img.Src = ImageUrl;
			img.Alt = picture.Subject.Replace("\"", "\\\"");

			if (Width > 0)
				img.Width = settings.Width;

			if (Height > 0)
				img.Height = settings.Height;

			img.Border = Border;

			if(cssClass != string.Empty)
				img.Attributes["Class"] = CssClass;
			if(style != string.Empty)
				img.Attributes["Style"] = style;

			if(EnableSecondaryThumbnail && !secondaryPopup)
			{
				img.Attributes["onmouseover"] = "javascript:this.src='" + SecondaryImageUrl + "';";
				img.Attributes["onmouseout"] = "javascript:this.src='" + ImageUrl + "';";
			}
			else if(EnableSecondaryThumbnail && secondaryPopup)
				img.Attributes["onmouseover"] = "ToggleGalleryThumbnail(" + picture.PostID.ToString() + ");";

			img.Attributes["Id"] = imageIDprefix + picture.PostID.ToString();

			// If we're doing a Matte rendering we have some special switch logic
			if (ImageType == GalleryImageType.Gallery) {
				
				img.Attributes["style"] = "border:4px solid white;";
				RenderMatte(img, a).RenderControl(writer);

			} else if (ImageType == GalleryImageType.Details || ImageType == GalleryImageType.Slideshow || ImageType == GalleryImageType.SecondaryThumbnail) {

				img.Attributes["style"] = "border:4px solid white;";
				RenderBorder(img, a).RenderControl(writer);

			} else {

				if (ImageType == GalleryImageType.Micro)
					img.Attributes["style"] = "border:3px solid white;";

				if(NavigateUrl != string.Empty) {
					a.Controls.Add(img);
					a.RenderControl(writer);
				}
				else
					img.RenderControl(writer);

			}

			if(secondaryPopup)
				RenderSecondaryThumbnail(writer);
		}

		private HtmlTableCell MatteTableCell(string className, string imgSrc) {
			HtmlTableCell td = new HtmlTableCell();

			td.Attributes["class"] = className;

			if (imgSrc != null) {
				HtmlImage img = new HtmlImage();

				img.Src = imgSrc;
				img.Attributes["style"] = "border-width:0px;";
				td.Controls.Add(img);
			}

			return td;
		}

		private HtmlTable RenderBorder(HtmlImage img, HtmlAnchor anchor) {
			HtmlTable t = new HtmlTable();
			HtmlTableRow tr;
			HtmlTableCell td;

			// table properties
			t.Border = 0;
			t.CellPadding = 0;
			t.CellSpacing = 0;
			t.Attributes["class"] = "photo-frame";

			// row #1
			tr = new HtmlTableRow();
			tr.Cells.Add(MatteTableCell("topx--", null));
			tr.Cells.Add(MatteTableCell("top-x-", null));
			tr.Cells.Add(MatteTableCell("top--x", null));
			t.Rows.Add(tr);

			// row #2
			tr = new HtmlTableRow();
			tr.Cells.Add(MatteTableCell("midx--", null));
			td = new HtmlTableCell();
			td.BgColor = "white";
			anchor.Controls.Add(img);
			td.Controls.Add( anchor );
			tr.Cells.Add(td);
			tr.Cells.Add(MatteTableCell("mid--x", null));
			t.Rows.Add(tr);

			// row #3
			tr = new HtmlTableRow();
			tr.Cells.Add(MatteTableCell("botx--", null));
			tr.Cells.Add(MatteTableCell("bot-x-", null));
			tr.Cells.Add(MatteTableCell("bot--x", null));
			t.Rows.Add(tr);

			return t;

		}

		private HtmlTable RenderMatte(HtmlImage img, HtmlAnchor anchor) {
			HtmlTable t = new HtmlTable();
			HtmlTableRow tr;
			HtmlTableCell td;

			// table properties
			t.Border = 0;
			t.CellPadding = 0;
			t.CellSpacing = 0;
			t.Attributes["class"] = "album-frame";

			// row #1
			tr = new HtmlTableRow();
			tr.Cells.Add(MatteTableCell("topx----", null));
			tr.Cells.Add(MatteTableCell("top-x---", ThemeManager.SkinPath() + "/images/alblum-mtl.gif"));
			tr.Cells.Add(MatteTableCell("top--x--", null));
			tr.Cells.Add(MatteTableCell("top---x-", ThemeManager.SkinPath() + "/images/alblum-mtr.gif"));
			tr.Cells.Add(MatteTableCell("top-----", null));
			t.Rows.Add(tr);

			// row #2
			tr = new HtmlTableRow();
			tr.Cells.Add(MatteTableCell("mtpx----", ThemeManager.SkinPath() + "/images/alblum-mltl.gif"));
			td = new HtmlTableCell();
			td.ColSpan = 3;
			td.VAlign = "center";
			td.Align = "center";
			td.BgColor = "white";
			td.RowSpan = 3;
			anchor.Controls.Add(img);
			td.Controls.Add( anchor );
			tr.Cells.Add(td);
			tr.Cells.Add(MatteTableCell("mtp----x", ThemeManager.SkinPath() + "/images/alblum-mrtr.gif"));
			t.Rows.Add(tr);

			// row #3
			tr = new HtmlTableRow();
			tr.Cells.Add(MatteTableCell("midx----", null));
			tr.Cells.Add(MatteTableCell("mid----x", null));
			t.Rows.Add(tr);

			// row #4
			tr = new HtmlTableRow();
			tr.Cells.Add(MatteTableCell("mbtx----", ThemeManager.SkinPath() + "/images/alblum-mlbl.gif"));
			tr.Cells.Add(MatteTableCell("mbt----x", ThemeManager.SkinPath() + "/images/alblum-mrbr.gif"));
			t.Rows.Add(tr);

			// row #5
			tr = new HtmlTableRow();
			tr.Cells.Add(MatteTableCell("botx----", null));
			tr.Cells.Add(MatteTableCell("bot-x---", ThemeManager.SkinPath() + "/images/alblum-mbl.gif"));
			tr.Cells.Add(MatteTableCell("bot--x--", null));
			tr.Cells.Add(MatteTableCell("bot---x-", ThemeManager.SkinPath() + "/images/alblum-mbr.gif"));
			tr.Cells.Add(MatteTableCell("bot----x", null));
			t.Rows.Add(tr);

			return t;
			
		}

		protected void RenderSecondaryThumbnail(HtmlTextWriter writer)
		{
			writer.Write("<div id='SecondaryThumbDiv{0}' class='secondaryThumbnailHidden'>", picture.PostID );

			if(NavigateUrl != string.Empty)
			{
				writer.AddAttribute(HtmlTextWriterAttribute.Href, NavigateUrl);
				writer.RenderBeginTag(HtmlTextWriterTag.A);
			}

			writer.AddAttribute(HtmlTextWriterAttribute.Src, SecondaryImageUrl);
			writer.AddAttribute(HtmlTextWriterAttribute.Alt, picture.Subject.Replace("\"", "\\\""));
			writer.AddAttribute(HtmlTextWriterAttribute.Width, secondarySettings.Width.ToString());
			writer.AddAttribute(HtmlTextWriterAttribute.Height, secondarySettings.Height.ToString());
			writer.AddAttribute(HtmlTextWriterAttribute.Border, Border.ToString());

			writer.AddAttribute(HtmlTextWriterAttribute.Id, "SecondaryThumb" + picture.PostID.ToString());
			writer.AddAttribute("onmouseout", "ToggleGalleryThumbnail(" + picture.PostID.ToString() + ");");

			writer.RenderBeginTag(HtmlTextWriterTag.Img);

			writer.RenderEndTag();

			if(NavigateUrl != string.Empty)
				writer.RenderEndTag();

			writer.Write("</div>");
		}

		#endregion

	}

}