/// <summary>
/// Constructs a <see cref="ResourceAccessorTextureImageSource"/> for the given data.
/// </summary>
/// <param name="resourceAccessor">The resource accessor to load the texture data from.</param>
/// <param name="rotation">Desired rotation for the given image.</param>
public ResourceAccessorTextureImageSource(IFileSystemResourceAccessor resourceAccessor, RightAngledRotation rotation)
{
_key = resourceAccessor.CanonicalLocalResourcePath.Serialize();
_resourceAccessor = resourceAccessor;
_stream = _resourceAccessor.OpenRead();
_rotation = rotation;
}
/// <summary>
/// Constructs a <see cref="ResourceAccessorTextureImageSource"/> for the given data.
/// </summary>
/// <param name="resourceAccessor">The resource accessor to load the texture data from.</param>
/// <param name="rotation">Desired rotation for the given image.</param>
public ResourceAccessorTextureImageSource(IFileSystemResourceAccessor resourceAccessor, RightAngledRotation rotation)
{
_key = resourceAccessor.CanonicalLocalResourcePath.Serialize();
_resourceAccessor = resourceAccessor;
_stream = _resourceAccessor.OpenRead();
_rotation = rotation;
}
protected static Matrix TranslateRotation(RightAngledRotation rar)
{
if (rar == RightAngledRotation.Zero)
{
return(Matrix.Identity);
}
float rotation = 0;
switch (rar)
{
case RightAngledRotation.HalfPi:
rotation = (float)Math.PI / 2;
break;
case RightAngledRotation.Pi:
rotation = (float)Math.PI;
break;
case RightAngledRotation.ThreeHalfPi:
rotation = (float)Math.PI * 3 / 2;
break;
}
Matrix matrix = Matrix.Translation(-0.5f, -0.5f, 0);
matrix *= Matrix.RotationZ(rotation);
matrix *= Matrix.Translation(0.5f, 0.5f, 0);
return(matrix);
}
/// <summary>
/// Constructs a <see cref="BinaryTextureImageSource"/> for thumbnails of the given size from MediaItems.
/// </summary>
public static ImageSource CreateMediaItemThumbnailAspectSource(object source, int width, int height)
{
MediaItem mediaItem = source as MediaItem;
if (mediaItem == null)
{
return(null);
}
Guid id = mediaItem.MediaItemId;
// Local media items don't have an item id
string key = (id == Guid.Empty ? Guid.NewGuid() : id).ToString();
byte[] textureData = null;
// Each resolution is cached separately. If we read cache only and our favourite resolution is not yet in cache,
// we try to find any other existing.
if (mediaItem.Aspects.ContainsKey(ThumbnailLargeAspect.ASPECT_ID))
{
textureData = (byte[])mediaItem.Aspects[ThumbnailLargeAspect.ASPECT_ID].GetAttributeValue(ThumbnailLargeAspect.ATTR_THUMBNAIL);
}
ImageRotation miRotation;
bool flipX;
bool flipY;
ImageAspect.GetOrientationMetadata(mediaItem, out miRotation, out flipX, out flipY);
RightAngledRotation rotation = RotationTranslator.TranslateToRightAngledRotation(miRotation);
return(new BinaryTextureImageSource(textureData, rotation, key));
}
protected void CycleTextures(TextureAsset nextTexture, RightAngledRotation rotation)
{
// Current -> Last
_lastTexture = _currentTexture;
_lastImageContext = _imageContext;
// Next -> Current
_currentTexture = nextTexture;
_imageContext = new ImageContext
{
FrameSize = _frameSize,
ShaderEffect = Effect,
Rotation = rotation
};
if (_lastTexture != _currentTexture)
{
StartTransition();
FireChanged();
}
}
protected void CycleTextures(RightAngledRotation rotation)
{
// Current -> Last
_lastTexture = _currentTexture;
_lastImageContext = _imageContext;
// Next -> Current
_currentTexture = _nextTexture;
_imageContext = new ImageContext
{
FrameSize = _frameSize,
ShaderEffect = Effect,
Rotation = rotation,
HorizontalTextureAlignment = HorizontalTextureAlignment,
VerticalTextureAlignment = VerticalTextureAlignment
};
// Clear next
_nextTexture = null;
if (_lastTexture != _currentTexture)
{
StartTransition();
FireChanged();
}
}
/// <summary>
/// Constructs a <see cref="BinaryTextureImageSource"/> for the given data.
/// </summary>
/// <param name="textureData">Binary data to create the texture for.</param>
/// <param name="rotation">Desired rotation for the given image.</param>
public BinaryTextureImageSource(byte[] textureData, RightAngledRotation rotation) : this(textureData, rotation, BitConverter.ToString(sha1.ComputeHash(textureData)))
{
}
/// <summary>
/// Constructs a <see cref="BinaryTextureImageSource"/> for the given data.
/// </summary>
/// <param name="textureData">Binary data to create the texture for.</param>
/// <param name="rotation">Desired rotation for the given image.</param>
/// <param name="key">Unique key for storing the generated texture in the <see cref="ContentManager"/>.</param>
public BinaryTextureImageSource(byte[] textureData, RightAngledRotation rotation, string key)
{
_key = key;
_textureData = textureData;
_rotation = rotation;
}
protected void CycleTextures(RightAngledRotation rotation)
{
// Current -> Last
_lastTexture = _currentTexture;
_lastImageContext = _imageContext;
// Next -> Current
_currentTexture = _nextTexture;
_imageContext = new ImageContext
{
FrameSize = _frameSize,
ShaderEffect = Effect,
Rotation = rotation
};
// Clear next
_nextTexture = null;
if (_lastTexture != _currentTexture)
{
StartTransition();
FireChanged();
}
}
/// <summary>
/// Constructs a <see cref="BinaryTextureImageSource"/> for the given data.
/// </summary>
/// <param name="textureData">Binary data to create the texture for.</param>
/// <param name="rotation">Desired rotation for the given image.</param>
public BinaryTextureImageSource(byte[] textureData, RightAngledRotation rotation) : this(textureData, rotation, BitConverter.ToString(sha1.ComputeHash(textureData))) {}
/// <summary>
/// Constructs a <see cref="BinaryTextureImageSource"/> for the given data.
/// </summary>
/// <param name="textureData">Binary data to create the texture for.</param>
/// <param name="rotation">Desired rotation for the given image.</param>
/// <param name="key">Unique key for storing the generated texture in the <see cref="ContentManager"/>.</param>
public BinaryTextureImageSource(byte[] textureData, RightAngledRotation rotation, string key)
{
_key = key;
_textureData = textureData;
_rotation = rotation;
}
protected static Matrix TranslateRotation(RightAngledRotation rar)
{
if (rar == RightAngledRotation.Zero)
return Matrix.Identity;
float rotation = 0;
switch (rar)
{
case RightAngledRotation.HalfPi:
rotation = (float) Math.PI / 2;
break;
case RightAngledRotation.Pi:
rotation = (float) Math.PI;
break;
case RightAngledRotation.ThreeHalfPi:
rotation = (float) Math.PI * 3 / 2;
break;
}
Matrix matrix = Matrix.Translation(-0.5f, -0.5f, 0);
matrix *= Matrix.RotationZ(rotation);
matrix *= Matrix.Translation(0.5f, 0.5f, 0);
return matrix;
}
