diff options
Diffstat (limited to 'mcs/class/System.Drawing/System.Drawing/ImageAnimator.cs')
| -rw-r--r-- | mcs/class/System.Drawing/System.Drawing/ImageAnimator.cs | 218 |
1 files changed, 218 insertions, 0 deletions
diff --git a/mcs/class/System.Drawing/System.Drawing/ImageAnimator.cs b/mcs/class/System.Drawing/System.Drawing/ImageAnimator.cs new file mode 100644 index 00000000000..201e39e53de --- /dev/null +++ b/mcs/class/System.Drawing/System.Drawing/ImageAnimator.cs @@ -0,0 +1,218 @@ +// +// System.Drawing.ImageAnimator.cs +// +// Author: +// Dennis Hayes (dennish@Raytek.com) +// Sanjay Gupta (gsanjay@novell.com) +// +// (C) 2002 Ximian, Inc +// + +// +// Copyright (C) 2004 Novell, Inc (http://www.novell.com) +// +// 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; +using System.Drawing.Imaging; +using System.Threading; +using System.Collections; + +namespace System.Drawing +{ + //AnimateEventArgs class + class AnimateEventArgs : EventArgs
+ {
+ private int frameCount;
+ private int activeFrameCount = 0;
+ private Thread thread;
+
+ //Constructor.
+ //
+ public AnimateEventArgs(Image img)
+ {
+ Guid[] dimensionList = img.FrameDimensionsList; + int length = dimensionList.Length; + for (int i=0; i<length; i++) { + if (dimensionList [i].Equals(FrameDimension.Time.Guid))
+ this.frameCount = img.GetFrameCount (FrameDimension.Time); + }
+ }
+
+ public int FrameCount {
+ get {
+ return frameCount;
+ }
+ }
+
+ public int ActiveFrameCount {
+ get {
+ return activeFrameCount;
+ }
+
+ set {
+ activeFrameCount = value;
+ }
+ }
+
+ public Thread RunThread{
+ get {
+ return thread;
+ }
+
+ set {
+ thread = value;
+ }
+ }
+ }
+ + /// <summary> + /// Summary description for ImageAnimator. + /// </summary> + /// + [MonoTODO] + public sealed class ImageAnimator + { + static Hashtable ht = new Hashtable (); + + private ImageAnimator () + { + // + // TODO: Add constructor logic here + // + } + + public static void Animate (Image img, EventHandler onFrameChangeHandler) + { + if (img == null) + throw new System.NullReferenceException ("Object reference not set to an instance of an object."); + + if (!ht.ContainsKey (img)) { + AnimateEventArgs evtArgs = new AnimateEventArgs (img); + WorkerThread WT = new WorkerThread(onFrameChangeHandler, evtArgs); + ThreadStart TS = new ThreadStart(WT.LoopHandler); + Thread thread = new Thread(TS); + thread.IsBackground = true; + evtArgs.RunThread = thread; + ht.Add (img, evtArgs); + + thread.Start(); + } + } + + public static bool CanAnimate (Image img) + { + //An image can animate if it has multiple frame in + //time based FrameDimension else return false + //Doubt what if the image has multiple frame in page + //based FrameDimension + if (img == null) + return false; + + //Need to check whether i can do this without iterating + //within the FrameDimensionsList, ie just call GetFrameCount + //with parameter FrameDimension.Time + Guid[] dimensionList = img.FrameDimensionsList; + int length = dimensionList.Length; + int frameCount; + for (int i=0; i<length; i++)
+ { + if (dimensionList [i].Equals(FrameDimension.Time.Guid))
+ { + frameCount = img.GetFrameCount (FrameDimension.Time); + if (frameCount > 1) + return true; + } + } + + return false;
+ } + + public static void StopAnimate (Image img, EventHandler onFrameChangeHandler) + { + if (img == null) + throw new System.NullReferenceException ("Object reference not set to an instance of an object."); + + if (ht.ContainsKey (img)) { + AnimateEventArgs evtArgs = (AnimateEventArgs) ht [img]; + evtArgs.RunThread.Abort (); + ht.Remove (img); + } + } + + public static void UpdateFrames () + { + foreach (Image img in ht.Keys) { + UpdateFrames (img); + } + } + + public static void UpdateFrames (Image img) + { + if (img == null) + throw new System.NullReferenceException ("Object reference not set to an instance of an object."); + + if (ht.ContainsKey (img)){ + //Need a way to get the delay during animation + AnimateEventArgs evtArgs = (AnimateEventArgs) ht [img]; + if (evtArgs.ActiveFrameCount < evtArgs.FrameCount-1){ + evtArgs.ActiveFrameCount ++; + img.SelectActiveFrame (FrameDimension.Time, evtArgs.ActiveFrameCount); + }
+ else + evtArgs.ActiveFrameCount = 0; + ht [img] = evtArgs; + } + } + } + + class WorkerThread + { + private EventHandler frameChangeHandler; + private AnimateEventArgs animateEventArgs; + + public WorkerThread(EventHandler frmChgHandler, AnimateEventArgs aniEvtArgs) + { + frameChangeHandler = frmChgHandler; + animateEventArgs = aniEvtArgs; + } + + public void LoopHandler() + { + try + { + while (true) { + //Need a way to get the delay during animation + Thread.Sleep (100); + frameChangeHandler (null, animateEventArgs);
+ } + } + catch(ThreadAbortException) + { + //lets not bother ourselves with tae + //it will be thrown anyway + } + catch(Exception er) + { + throw er; + } + } + }
+} |