public void Empty ()
{
FrameDimension fd = new FrameDimension (Guid.Empty);
Assert.AreEqual ("00000000-0000-0000-0000-000000000000", fd.Guid.ToString (), "Guid");
Assert.AreEqual (Guid.Empty.GetHashCode (), fd.GetHashCode (), "GetHashCode");
Assert.AreEqual ("[FrameDimension: 00000000-0000-0000-0000-000000000000]", fd.ToString (), "ToString");
Assert.IsTrue (fd.Equals (new FrameDimension (Guid.Empty)), "Equals(Empty)");
Assert.IsFalse (fd.Equals (null), "Equals(null)");
}
public void Equals ()
{
FrameDimension fd = new FrameDimension (new Guid ("7462dc86-6180-4c7e-8e3f-ee7333a7a483"));
// equals
Assert.IsTrue (fd.Equals (FrameDimension.Page), "Page");
// but ToString differs!
Assert.AreEqual ("[FrameDimension: 7462dc86-6180-4c7e-8e3f-ee7333a7a483]", fd.ToString (), "ToString");
}
internal static void EnsureSave(Image image, string filename, Stream dataStream) {
if (image.RawFormat.Equals(ImageFormat.Gif)) {
bool animatedGif = false;
Guid[] dimensions = image.FrameDimensionsList;
foreach (Guid guid in dimensions) {
FrameDimension dimension = new FrameDimension(guid);
if (dimension.Equals(FrameDimension.Time)) {
animatedGif = image.GetFrameCount(FrameDimension.Time) > 1;
break;
}
}
if (animatedGif) {
try {
Stream created = null;
long lastPos = 0;
if (dataStream != null) {
lastPos = dataStream.Position;
dataStream.Position = 0;
}
try {
if (dataStream == null) {
created = dataStream = File.OpenRead(filename);
}
image.rawData = new byte[(int)dataStream.Length];
dataStream.Read(image.rawData, 0, (int)dataStream.Length);
}
finally {
if (created != null) {
created.Close();
}
else {
dataStream.Position = lastPos;
}
}
}
// possible exceptions for reading the filename
catch (UnauthorizedAccessException) {
}
catch (DirectoryNotFoundException) {
}
catch (IOException) {
}
// possible exceptions for setting/getting the position inside dataStream
catch (NotSupportedException) {
}
catch (ObjectDisposedException) {
}
// possible exception when reading stuff into dataStream
catch (ArgumentException) {
}
}
}
}
/// <devdoc>
/// Whether or not the image has multiple time-based frames.
/// </devdoc>
public static bool CanAnimate(Image image) {
if( image == null ) {
return false;
}
// See comment in the class header about locking the image ref.
lock( image ) {
Guid[] dimensions = image.FrameDimensionsList;
foreach (Guid guid in dimensions) {
FrameDimension dimension = new FrameDimension(guid);
if (dimension.Equals(FrameDimension.Time)) {
return image.GetFrameCount(FrameDimension.Time) > 1;
}
}
}
return false;
}
internal static void EnsureSave(Image image, string filename, Stream dataStream)
{
if (image.RawFormat.Equals(ImageFormat.Gif))
{
bool flag = false;
foreach (Guid guid in image.FrameDimensionsList)
{
FrameDimension dimension = new FrameDimension(guid);
if (dimension.Equals(FrameDimension.Time))
{
flag = image.GetFrameCount(FrameDimension.Time) > 1;
break;
}
}
if (flag)
{
try
{
Stream stream = null;
long position = 0L;
if (dataStream != null)
{
position = dataStream.Position;
dataStream.Position = 0L;
}
try
{
if (dataStream == null)
{
stream = dataStream = File.OpenRead(filename);
}
image.rawData = new byte[(int) dataStream.Length];
dataStream.Read(image.rawData, 0, (int) dataStream.Length);
}
finally
{
if (stream != null)
{
stream.Close();
}
else
{
dataStream.Position = position;
}
}
}
catch (UnauthorizedAccessException)
{
}
catch (DirectoryNotFoundException)
{
}
catch (IOException)
{
}
catch (NotSupportedException)
{
}
catch (ObjectDisposedException)
{
}
catch (ArgumentException)
{
}
}
}
}
public static bool CanAnimate(Image image)
{
if (image != null)
{
lock (image)
{
foreach (Guid guid in image.FrameDimensionsList)
{
FrameDimension dimension = new FrameDimension(guid);
if (dimension.Equals(FrameDimension.Time))
{
return (image.GetFrameCount(FrameDimension.Time) > 1);
}
}
}
}
return false;
}
