internal void Init ()
{
if (NativeRef == null) {
NativeRef = new NativeImageRef (Backend, ToolkitEngine);
} else
NativeRef.AddReference ();
}
/// <summary>
/// Creates a new image that is a copy of another image
/// </summary>
/// <param name="image">Image.</param>
public Image(Image image) : base(image.Backend, image.ToolkitEngine)
{
NativeRef = image.NativeRef;
requestedSize = image.requestedSize;
requestedAlpha = image.requestedAlpha;
styles = image.styles;
Init();
}
/// <summary>
/// Creates a new image that is a copy of another image
/// </summary>
/// <param name="image">Image.</param>
public Image (Image image): base (image.Backend, image.ToolkitEngine)
{
NativeRef = image.NativeRef;
requestedSize = image.requestedSize;
requestedAlpha = image.requestedAlpha;
styles = image.styles;
Init ();
}
internal void Init()
{
if (NativeRef == null)
{
NativeRef = new NativeImageRef(Backend, ToolkitEngine);
}
else
{
NativeRef.AddReference();
}
}
void MakeWrittable ()
{
// If the bitmap only has one reference, that reference is the one held by this instance, so
// no other image is referencing this one. In that case, the bitmap can be safely modified.
// On the other hand, if the bitmap is being referenced by another image, an local copy
// has to be made
if (NativeRef.ReferenceCount > 1) {
Backend = ToolkitEngine.ImageBackendHandler.CopyBitmap (Backend);
NativeRef.ReleaseReference (true);
NativeRef = new NativeImageRef (Backend, ToolkitEngine);
}
}
void MakeWrittable()
{
// If the bitmap only has one reference, that reference is the one held by this instance, so
// no other image is referencing this one. In that case, the bitmap can be safely modified.
// On the other hand, if the bitmap is being referenced by another image, an local copy
// has to be made
if (NativeRef.ReferenceCount > 1)
{
Backend = ToolkitEngine.ImageBackendHandler.CopyBitmap(Backend);
NativeRef.ReleaseReference(true);
NativeRef = new NativeImageRef(Backend, ToolkitEngine);
}
}
public NativeImageRef LoadForToolkit(Toolkit targetToolkit)
{
if (Toolkit == targetToolkit)
{
return(this);
}
NativeImageRef newRef = null;
var r = NextRef;
while (r != this)
{
if (r.toolkit == targetToolkit)
{
newRef = r;
break;
}
r = r.NextRef;
}
if (newRef != null)
{
return(newRef);
}
object newBackend = null;
if (sources != null)
{
var frames = new List <object> ();
foreach (var s in sources)
{
if (s.ImageLoader != null)
{
var streams = s.ImageLoader();
try {
if (streams.Length == 1)
{
newBackend = targetToolkit.ImageBackendHandler.LoadFromStream(streams [0]);
}
else
{
var backends = new object [streams.Length];
for (int n = 0; n < backends.Length; n++)
{
backends [n] = targetToolkit.ImageBackendHandler.LoadFromStream(streams [n]);
}
newBackend = targetToolkit.ImageBackendHandler.CreateMultiResolutionImage(backends);
}
} finally {
foreach (var st in streams)
{
st.Dispose();
}
}
}
else if (s.CustomImageLoader != null)
{
targetToolkit.Invoke(() => newBackend = Image.FromCustomLoader(s.CustomImageLoader, s.Source, s.Tags).GetBackend());
}
else if (s.ResourceAssembly != null)
{
targetToolkit.Invoke(() => newBackend = Image.FromResource(s.ResourceAssembly, s.Source).GetBackend());
}
else if (s.Source != null)
{
targetToolkit.Invoke(() => newBackend = Image.FromFile(s.Source).GetBackend());
}
else if (s.DrawCallback != null)
{
newBackend = targetToolkit.ImageBackendHandler.CreateCustomDrawn(s.DrawCallback);
}
else if (s.StockId != null)
{
newBackend = targetToolkit.GetStockIcon(s.StockId).GetBackend();
}
else
{
throw new NotSupportedException();
}
frames.Add(newBackend);
}
newBackend = targetToolkit.ImageBackendHandler.CreateMultiSizeIcon(frames);
}
else
{
using (var s = new MemoryStream()) {
toolkit.ImageBackendHandler.SaveToStream(backend, s, ImageFileType.Png);
s.Position = 0;
newBackend = targetToolkit.ImageBackendHandler.LoadFromStream(s);
}
}
newRef = new NativeImageRef(newBackend, targetToolkit);
newRef.NextRef = NextRef;
NextRef = newRef;
return(newRef);
}
/// <summary>
/// Creates a new image that is a copy of another image
/// </summary>
/// <param name="image">Image.</param>
public Image(Image image) : base(image.Backend, image.ToolkitEngine)
{
NativeRef = image.NativeRef;
Init();
}
public NativeImageRef LoadForToolkit(Toolkit targetToolkit)
{
NativeImageRef newRef = null;
var r = NextRef;
while (r != this) {
if (r.toolkit == targetToolkit) {
newRef = r;
break;
}
r = r.NextRef;
}
if (newRef != null)
return newRef;
object newBackend;
if (sources != null) {
var frames = new List<object> ();
foreach (var s in sources) {
if (s.ImageLoader != null) {
var streams = s.ImageLoader ();
try {
if (streams.Length == 1) {
newBackend = targetToolkit.ImageBackendHandler.LoadFromStream (streams [0]);
} else {
var backends = new object[streams.Length];
for (int n = 0; n < backends.Length; n++) {
backends [n] = targetToolkit.ImageBackendHandler.LoadFromStream (streams [n]);
}
newBackend = targetToolkit.ImageBackendHandler.CreateMultiResolutionImage (backends);
}
} finally {
foreach (var st in streams)
st.Dispose ();
}
}
else if (s.ResourceAssembly != null)
newBackend = targetToolkit.ImageBackendHandler.LoadFromResource (s.ResourceAssembly, s.Source);
else if (s.Source != null)
newBackend = targetToolkit.ImageBackendHandler.LoadFromFile (s.Source);
else if (s.DrawCallback != null)
newBackend = targetToolkit.ImageBackendHandler.CreateCustomDrawn (s.DrawCallback);
else if (s.StockId != null)
newBackend = targetToolkit.GetStockIcon (s.StockId).GetBackend ();
else
throw new NotSupportedException ();
frames.Add (newBackend);
}
newBackend = targetToolkit.ImageBackendHandler.CreateMultiSizeIcon (frames);
} else {
using (var s = new MemoryStream ()) {
toolkit.ImageBackendHandler.SaveToStream (backend, s, ImageFileType.Png);
s.Position = 0;
newBackend = targetToolkit.ImageBackendHandler.LoadFromStream (s);
}
}
newRef = new NativeImageRef (newBackend, targetToolkit);
newRef.NextRef = NextRef;
NextRef = newRef;
return newRef;
}
/// <summary>
/// Creates a new image that is a copy of another image
/// </summary>
/// <param name="image">Image.</param>
public Image(Image image)
: base(image.Backend, image.ToolkitEngine)
{
NativeRef = image.NativeRef;
Init ();
}
