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Changed by [EMAIL PROTECTED] http://bugzilla.ximian.com/show_bug.cgi?id=79729 --- shadow/79729 2006-10-23 18:55:00.000000000 -0400 +++ shadow/79729.tmp.6698 2006-10-23 18:55:00.000000000 -0400 @@ -0,0 +1,171 @@ +Bug#: 79729 +Product: Mono: Runtime +Version: 1.1 +OS: GNU/Linux [Other] +OS Details: +Status: NEW +Resolution: +Severity: Unknown +Priority: Critical +Component: io-layer +AssignedTo: [EMAIL PROTECTED] +ReportedBy: [EMAIL PROTECTED] +QAContact: [EMAIL PROTECTED] +TargetMilestone: --- +URL: +Cc: +Summary: Integer Overflow/Underflow in GDI, + +Environment: +OS: + +Ubuntu 2.6.15-26-server #1 SMP Fri Sep 8 21:00:37 UTC 2006 i686 GNU/Linux +Bug occurs on other linux and unix systems (Solaris) +Mono: 1.1.18 + +Bug Description: +When an offset greater than x=16384, 2^14 +the clipping window starts to move, numbers before that, +the window does not move + +Expected Results: +Only the world would translate. Clipping window would not move. +Items draw will be the only thing moving in clipping window. + +Actual Results: +numbers used to draw before X is translated > 2^ 14 are translated properly +without the clipping window moving. +Numbers after X result in clipping window moving. + +//////////////////////////////////////Sample code below +///////running on xsp2 +<%@ Page Language="C#" %> +<%@ Import Namespace = "System.Drawing" %> +<%@ Import Namespace = "System.Drawing.Drawing2D" %> +<%@ Import Namespace = "System.IO" %> +<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 +Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1- +transitional.dtd"> + +<script runat="server"> +//internal object used to handle a bug in the GDI for linux/unix +//because the VisibleClipBounds does not maintain its data correctly +//on linux pertaining to the boundary of the clipping region/window + public enum Rotation : int + { + /// <summary> + /// a rotation level + /// </summary> + Degree0 = 0, + /// <summary> + /// rotation 90 deg + /// </summary> + Degree90 = 90, + /// <summary> + /// rotation 180 deg + /// </summary> + Degree180 = 180, + /// <summary> + /// rotation 270 deg + /// </summary> + + Degree270 = 270 + } + + protected void Page_Load(object sender, EventArgs e) + { + + + /* + * debug values from my custom lib + * anchor is offset in this example code below +//############UNIX BUG FIX MODE True##################### +Graph::Paint Anchor {X=100, Y=100} +Graph::Paint RelativeCenter {X=-32318.08, Y=900} +Graph::Paint Center {X=-32218.08, Y=1000} +Graph::Paint Size {Width=900, Height=900} +Graph::Paint Rotation Degree0 +//below calculated from Size Demensions - center + offset +Graph::Paint Left 32318.08 +Graph::Paint Right 33218.08 +Graph::Paint Top -900 +Graph::Paint Bottom 0 + +//############UNIX BUG FIX MODE False##################### +Graph::Paint Anchor {X=100, Y=100} +Graph::Paint RelativeCenter {X=0, Y=0} +Graph::Paint Center {X=100, Y=100} +Graph::Paint Size {Width=900, Height=900} +Graph::Paint Rotation Degree0 +//below retrieved from GDI.VisibleClipBounds, +//these should be the same as above +//regardless of the unix mode (OSVersion), on windows they are the same, +//on unix/linux they are never the same +//bug reported, never fixed +Graph::Paint Left 0 +Graph::Paint Right 1000 +Graph::Paint Top 0 +Graph::Paint Bottom 1000 +*/ + //Step 1 :Create a GDI object from a Bitmap + Bitmap bmp=new Bitmap(1000,1000); + Graphics g=Graphics.FromImage(bmp); + //step 2: define the variables + //offset is also called anchor + PointF offset = new PointF(100, 100); + float center_x; + + if (Request.QueryString["x"] != null) + center_x = Convert.ToSingle(Request.QueryString["x"]); + else + center_x = 10f; + + PointF center = new PointF(center_x, 500f); + Rotation angle = Rotation.Degree0; + SizeF size =new SizeF(900,900); + // Step 3: Apply a transofmration + + g.ResetTransform(); + g.TranslateTransform(offset.X, offset.Y); + g.Clip = new Region(new RectangleF( + 0, 0, + size.Width, size.Height)); + g.RotateTransform((float)angle);//angle is type Rotation + g.TranslateTransform(center.X, center.Y, MatrixOrder.Append); + g.Clear(Color.Red); +//step 4: draw + g.DrawLine(Pens.Black, -500, -500, 500, 500); + g.DrawLine(Pens.Black, -500, 500, 500, -500); + + + Response.Clear(); + Response.ContentType = "image/bmp"; + + using (MemoryStream ms = new MemoryStream()) + { + bmp.Save(ms, System.Drawing.Imaging.ImageFormat.Bmp); + Response.OutputStream.Write(ms.GetBuffer(), 0, (int)ms.Length); + } + /*Expected Results: + Only the world would translate. Clipping window would not move. + Items draw will be the only thing moving in clipping window. + + Actual Results: + numbers before X are translated properly + without the clipping window moving. + Numbers after X result in clipping window moving.*/ + } +</script> + +<html xmlns="http://www.w3.org/1999/xhtml"; > +<head runat="server"> + <title>Untitled Page</title> +</head> +<body> + <form id="form1" runat="server"> + <div> + + </div> + </form> +</body> +</html> _______________________________________________ mono-bugs maillist - [email protected] http://lists.ximian.com/mailman/listinfo/mono-bugs
