DNN.Repository/MakeThumbnail.aspx.cs at develop · DNNCommunity/DNN.Repository · GitHub

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using Microsoft.VisualBasic;

using System;

using System.Collections;

using System.Data;

using System.Diagnostics;

using System.Drawing;

using System.Linq;

// DotNetNuke® - http://www.dotnetnuke.com

// by Perpetual Motion Interactive Systems Inc. ( http://www.perpetualmotion.ca )

// Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated

// documentation files (the "Software"), to deal in the Software without restriction, including without limitation

// the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and

// to permit persons to whom the Software is furnished to do so, subject to the following conditions:

// The above copyright notice and this permission notice shall be included in all copies or substantial portions

// of the Software.

// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED

// TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL

// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF

// CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER

// DEALINGS IN THE SOFTWARE.

using System.IO;

using System.Web;

using System.Drawing;

using System.Drawing.Imaging;

using DotNetNuke;

using DotNetNuke.Entities.Portals;

using DotNetNuke.Entities.Modules;

using DotNetNuke.Common.Utilities;

namespace DotNetNuke.Modules.Repository

{

public class MakeThumbnail : System.Web.UI.Page

{

private Helpers oRepositoryBusinessController = new Helpers();

#region " Web Form Designer Generated Code "

//This call is required by the Web Form Designer.

[System.Diagnostics.DebuggerStepThrough()]

private void InitializeComponent()

{

}

//NOTE: The following placeholder declaration is required by the Web Form Designer.

//Do not delete or move it.

private System.Object designerPlaceholderDeclaration;

private void Page_Init(System.Object sender, System.EventArgs e)

{

//CODEGEN: This method call is required by the Web Form Designer

//Do not modify it using the code editor.

InitializeComponent();

}

#endregion

#region "Event Handlers"

private void Page_Load(System.Object sender, System.EventArgs e)

{

//Read the querystring params to determine the image to create a thumbnail

string ImageId = Request.QueryString["id"];

string ModuleId = Request.QueryString["mid"];

int imageHeight = int.TryParse(Request.QueryString["h"], out imageHeight) ? imageHeight : 0;

int imageWidth = int.TryParse(Request.QueryString["w"], out imageWidth) ? imageWidth : 0;

string strPathToImage = "";

string strExtension = "";

bool b_UseIcon = false;

string sNoImage = null;

bool bIsURL = false;

PortalSettings _portalSettings = (PortalSettings)HttpContext.Current.Items["PortalSettings"];

RepositoryController repository = new RepositoryController();

RepositoryInfo objRepository = null;

objRepository = repository.GetSingleRepositoryObject(Convert.ToInt32(ImageId));

if (!string.IsNullOrEmpty(ImageId)) {

if ((objRepository != null)) {

if (string.IsNullOrEmpty(objRepository.Image)) {

// no image, display an icon or generic image based on module settings

var moduleInfo = ModuleController.Instance.GetModule(int.Parse(ModuleId), Null.NullInteger, false);

var settings = moduleInfo.ModuleSettings;

if (!string.IsNullOrEmpty(Convert.ToString(settings["noimage"]))) {

strPathToImage = _portalSettings.HomeDirectory + Convert.ToString(settings["noimage"]);

} else {

if (!string.IsNullOrEmpty(Convert.ToString(settings["useicon"]))) {

if (Convert.ToString(settings["useicon"]) == "Yes") {

// get the file type

if ((objRepository != null)) {

strExtension = Strings.Replace(Path.GetExtension(objRepository.FileName), ".", "");

if (File.Exists(MapPath(_portalSettings.HomeDirectory + strExtension + ".jpg"))) {

strPathToImage = _portalSettings.HomeDirectory + strExtension + ".jpg";

b_UseIcon = true;

}

if (File.Exists(MapPath(_portalSettings.HomeDirectory + strExtension + ".gif"))) {

strPathToImage = _portalSettings.HomeDirectory + strExtension + ".gif";

b_UseIcon = true;

}

if (File.Exists(MapPath(_portalSettings.HomeDirectory + strExtension + ".png"))) {

strPathToImage = _portalSettings.HomeDirectory + strExtension + ".png";

b_UseIcon = true;

}

} else {

strPathToImage = _portalSettings.HomeDirectory + "Repository\\noImage.jpg";

}

if (b_UseIcon == false) {

strPathToImage = _portalSettings.HomeDirectory + "Repository\\noImage.jpg";

}

} else {

strPathToImage = _portalSettings.HomeDirectory + "Repository\\noImage.jpg";

}

} else {

strPathToImage = _portalSettings.HomeDirectory + "Repository\\noImage.jpg";

}

strPathToImage = Request.MapPath(strPathToImage);

} else {

// we have an image, display it

if (objRepository.Image.ToLower().StartsWith("fileid=")) {

strPathToImage = oRepositoryBusinessController.ConvertFileIDtoPath(_portalSettings.PortalId, int.Parse(objRepository.Image.Substring(7)));

} else {

oRepositoryBusinessController.SetRepositoryFolders(objRepository.ModuleId);

if (objRepository.Approved == oRepositoryBusinessController.IS_APPROVED) {

if (string.IsNullOrEmpty(objRepository.CreatedByUser)) {

strPathToImage = oRepositoryBusinessController.g_AnonymousFolder + "\\" + objRepository.Image;

} else {

if (oRepositoryBusinessController.g_UserFolders) {

strPathToImage = oRepositoryBusinessController.g_ApprovedFolder + "\\" + objRepository.CreatedByUser.ToString() + "\\" + objRepository.Image;

} else {

strPathToImage = oRepositoryBusinessController.g_ApprovedFolder + "\\" + objRepository.Image;

}

} else {

strPathToImage = oRepositoryBusinessController.g_UnApprovedFolder + "\\" + objRepository.Image;

}

} else {

// no image id, then we display the "No Image" image for this module

var moduleInfo = ModuleController.Instance.GetModule(int.Parse(ModuleId), Null.NullInteger, false);

var settings = moduleInfo.ModuleSettings;

string noImageURL = Convert.ToString(settings["noimage"]);

if (System.Text.RegularExpressions.Regex.IsMatch(noImageURL.ToLower(), "(http|https|ftp|gopher)://([\\w-]+\\.)+[\\w-]+(/[\\w- ./?%&=]*)?")) {

strPathToImage = noImageURL;

bIsURL = true;

} else {

string g_ApprovedFolder = "";

if (!string.IsNullOrEmpty(Convert.ToString(settings["folderlocation"])) &&

settings["folderlocation"].ToString() != PortalSettings.Current.HomeDirectoryMapPath + oRepositoryBusinessController.DefaultFolderLocationSubPath)

{

g_ApprovedFolder = settings["folderlocation"].ToString();

}

else

{

g_ApprovedFolder = _portalSettings.HomeDirectoryMapPath;

}

strPathToImage = g_ApprovedFolder + noImageURL.Replace("/", "\\");

}

// determine the image type

string imageType = strPathToImage.Substring(strPathToImage.LastIndexOf(".")).ToUpper();

System.Drawing.Image fullSizeImg = null;

if (bIsURL) {

System.Net.WebClient wc = new System.Net.WebClient();

Stream wStream = null;

wStream = wc.OpenRead(strPathToImage);

fullSizeImg = System.Drawing.Image.FromStream(wStream);

wStream.Close();

} else {

fullSizeImg = System.Drawing.Image.FromFile(strPathToImage);

}

int fullHeight = fullSizeImg.Height;

int fullWidth = fullSizeImg.Width;

if (imageWidth > 0 & imageHeight == 0) {

// calc the height based on the width ratio

imageHeight = (imageWidth * fullHeight) / fullWidth;

}

if (imageHeight > 0 & imageWidth == 0) {

// calc the width based on the height ratio

imageWidth = (imageHeight * fullWidth) / fullHeight;

}

if ((imageHeight == 0 & imageWidth == 0) | b_UseIcon) {

imageHeight = fullHeight;

imageWidth = fullWidth;

}

Response.Clear();

Response.Cache.SetCacheability(HttpCacheability.NoCache);

System.Drawing.Image thumbNailImg = null;

if (imageWidth < fullWidth | imageHeight < fullHeight) {

// we are producing a resized image, most probably a thumbnail

System.Drawing.Image.GetThumbnailImageAbort dummyCallBack = null;

dummyCallBack = new System.Drawing.Image.GetThumbnailImageAbort(ThumbnailCallback);

thumbNailImg = fullSizeImg.GetThumbnailImage(imageWidth, imageHeight, dummyCallBack, IntPtr.Zero);

switch (imageType) {

case ".JPG":

Response.ContentType = "image/jpeg";

thumbNailImg.Save(Response.OutputStream, ImageFormat.Jpeg);

break;

case ".GIF":

Response.ContentType = "image/gif";

thumbNailImg.Save(Response.OutputStream, ImageFormat.Gif);

break;

case ".PNG":

MemoryStream stmMemory = new MemoryStream();

Response.ContentType = "image/png";

thumbNailImg.Save(stmMemory, System.Drawing.Imaging.ImageFormat.Png);

stmMemory.WriteTo(Response.OutputStream);

break;

}

} else {

// we are serving out the full size image

// if the settings indicate to use a watermark, add the watermark to the image

var moduleInfo = ModuleController.Instance.GetModule(int.Parse(ModuleId), Null.NullInteger, false);

var settings = moduleInfo.ModuleSettings;

string watermarkText = "";

// to avoid GIF image issues, create a new blank canvas and copy the image.

Bitmap newImage = new Bitmap(fullSizeImg.Width, fullSizeImg.Height, System.Drawing.Imaging.PixelFormat.Format24bppRgb);

Graphics canvas = Graphics.FromImage(newImage);

canvas.DrawImage(fullSizeImg, new Rectangle(new Point(0, 0), fullSizeImg.Size));

// check to see if we need to overlay a watermark

if (!string.IsNullOrEmpty(Convert.ToString(settings["watermark"]))) {

watermarkText = Convert.ToString(settings["watermark"]);

SizeF StringSizeF = default(SizeF);

float DesiredWidth = 0;

Font wmFont = null;

float RequiredFontSize = 0;

float Ratio = 0;

wmFont = new Font("Verdana", 6, FontStyle.Bold);

DesiredWidth = fullSizeImg.Width * 0.75f;

StringSizeF = canvas.MeasureString(watermarkText, wmFont);

Ratio = StringSizeF.Width / wmFont.SizeInPoints;

RequiredFontSize = DesiredWidth / Ratio;

wmFont = new Font("Verdana", RequiredFontSize, FontStyle.Bold);

int wmLeft = (newImage.Width - canvas.MeasureString(watermarkText, wmFont).ToSize().Width) / 2;

int wmTop = (newImage.Height - canvas.MeasureString(watermarkText, wmFont).ToSize().Height) / 2;

canvas.DrawString(watermarkText, wmFont, new SolidBrush(Color.FromArgb(128, 255, 255, 255)), wmLeft, wmTop);

}

switch (imageType) {

case ".JPG":

Response.ContentType = "image/jpeg";

newImage.Save(Response.OutputStream, ImageFormat.Jpeg);

break;

case ".GIF":

Response.ContentType = "image/gif";

newImage.Save(Response.OutputStream, ImageFormat.Gif);

break;

case ".PNG":

MemoryStream stmMemory = new MemoryStream();

Response.ContentType = "image/png";

newImage.Save(stmMemory, System.Drawing.Imaging.ImageFormat.Png);

stmMemory.WriteTo(Response.OutputStream);

break;

}

#endregion

#region "Private Functions and Subs"

private bool ThumbnailCallback()

{

return false;

}

public MakeThumbnail()

{

Load += Page_Load;

Init += Page_Init;

}

#endregion

}

DNN.Repository/MakeThumbnail.aspx.cs at develop · DNNCommunity/DNN.Repository · GitHub

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