Fixed a case with Drag & Drop of images where the transparency is gone. Also fixed the editor "Center" patch, this was only working when width & height were smaller.

git-svn-id: http://svn.code.sf.net/p/greenshot/code/trunk@2283 7dccd23d-a4a3-4e1f-8c07-b4c1b4018ab4

Greenshot/Drawing/Surface.cs

@@ -673,7 +673,7 @@ namespace Greenshot.Drawing {
 				e.Effect=DragDropEffects.None;
 			} else {
 				List<string> filenames = GetFilenames(e);
-				if ((filenames != null && filenames.Count > 0) || e.Data.GetDataPresent(DataFormats.Bitmap, true) || e.Data.GetDataPresent(DataFormats.EnhancedMetafile, true)) {
+				if ((filenames != null && filenames.Count > 0) || e.Data.GetDataPresent("DragImageBits") || e.Data.GetDataPresent(DataFormats.Bitmap, true) || e.Data.GetDataPresent(DataFormats.EnhancedMetafile, true)) {
 					e.Effect=DragDropEffects.Copy;
 				} else {
 					e.Effect=DragDropEffects.None;
@@ -684,6 +684,18 @@ namespace Greenshot.Drawing {
 		private void OnDragDrop(object sender, DragEventArgs e) {
 			List<string> filenames = GetFilenames(e);
 			Point mouse = this.PointToClient(new Point(e.X, e.Y));
+			if (e.Data.GetDataPresent("Text")) {
+				string possibleUrl = (string)e.Data.GetData("Text");
+				if (possibleUrl != null && possibleUrl.StartsWith("http")) {
+					using (Bitmap image = NetworkHelper.DownloadImage(possibleUrl)) {
+						if (image != null) {
+							AddBitmapContainer(image, mouse.X, mouse.Y);
+							return;
+						}
+					}
+				}
+			}
+
 			if ((filenames != null && filenames.Count > 0)) {
 				foreach (string filename in filenames) {
 					if (filename != null && filename.Trim().Length > 0) {

Greenshot/Forms/ImageEditorForm.cs

@@ -1207,11 +1207,16 @@ namespace Greenshot {
 			}
 			Size imageSize = this.Surface.Image.Size;
 			Size currentImageClientSize = this.panel1.ClientSize;
-			if (currentImageClientSize.Height > imageSize.Height && currentImageClientSize.Width > imageSize.Width) {
+			if (currentImageClientSize.Width > imageSize.Width) {
+				var canvas = this.Surface as Control;
+				if (canvas != null) {
+					canvas.Left = (currentImageClientSize.Width - imageSize.Width) / 2;
+				}
+			}
+			if (currentImageClientSize.Height > imageSize.Height) {
 				var canvas = this.Surface as Control;
 				if (canvas != null) {
 					canvas.Top = (currentImageClientSize.Height - imageSize.Height) / 2;
-					canvas.Left = (currentImageClientSize.Width - imageSize.Width) / 2;
 				}
 			}
 		}

GreenshotPlugin/Core/NetworkHelper.cs

@@ -81,6 +81,27 @@ namespace GreenshotPlugin.Core {
 			return null;
 		}
 
+		/// <summary>
+		/// Download the url to Bitmap
+		/// </summary>
+		/// <param name="baseUri"></param>
+		/// <returns>Bitmap</returns>
+		public static Bitmap DownloadImage(string url) {
+			try {
+				HttpWebRequest request = (HttpWebRequest)NetworkHelper.CreateWebRequest(url);
+				HttpWebResponse response = (HttpWebResponse)request.GetResponse();
+				if (request.HaveResponse) {
+					using (Image image = Image.FromStream(response.GetResponseStream())) {
+						return new Bitmap(image);
+					}
+				}
+
+			} catch (Exception e) {
+				LOG.Error("Problem downloading the image from: " + url, e);
+			}
+			return null;
+		}
+		
 		/// <summary>
 		/// Helper method to create a web request, eventually with proxy
 		/// </summary>