void WriteAnimatedVisualCall(CodeBuilder builder, CodeGenInfo info)
{
builder.WriteLine("new AnimatedVisual(compositor,");
builder.Indent();
builder.WriteCommaSeparatedLines(info.LoadedImageSurfaceNodes.Select(n => n.FieldName));
builder.WriteLine(");");
builder.UnIndent();
}
/// <inheritdoc/>
// Called by the base class to write the end of the file (i.e. everything after the body of the Instantiator class).
protected override void WriteFileEnd(
CodeBuilder builder,
CodeGenInfo info)
{
// Write the constructor for the instantiator.
if (info.HasLoadedImageSurface)
{
builder.WriteLine($"internal AnimatedVisual(Compositor compositor,");
builder.Indent();
// Define the image surface parameters of the AnimatedVisual() constructor.
builder.WriteCommaSeparatedLines(info.LoadedImageSurfaceNodes.Select(n => $"{_stringifier.ReferenceTypeName(n.TypeName)} {_stringifier.CamelCase(n.Name)}"));
builder.WriteLine(")");
builder.UnIndent();
builder.OpenScope();
builder.WriteLine("_c = compositor;");
builder.WriteLine($"{info.ReusableExpressionAnimationFieldName} = compositor.CreateExpressionAnimation();");
// Initialize the private image surface variables with the input parameters of the constructor.
var nodes = info.LoadedImageSurfaceNodes.ToArray();
foreach (var n in nodes)
{
builder.WriteLine($"{n.FieldName} = {_stringifier.CamelCase(n.Name)};");
}
}
else
{
builder.WriteLine("internal AnimatedVisual(Compositor compositor)");
builder.OpenScope();
builder.WriteLine("_c = compositor;");
builder.WriteLine($"{info.ReusableExpressionAnimationFieldName} = compositor.CreateExpressionAnimation();");
}
builder.WriteLine("Root();");
builder.CloseScope();
builder.WriteLine();
// Write the IAnimatedVisual implementation.
builder.WriteLine("Visual IAnimatedVisual.RootVisual => _root;");
builder.WriteLine($"TimeSpan IAnimatedVisual.Duration => TimeSpan.FromTicks({info.DurationTicksFieldName});");
builder.WriteLine($"Vector2 IAnimatedVisual.Size => {Vector2(info.CompositionDeclaredSize)};");
builder.WriteLine("void IDisposable.Dispose() => _root?.Dispose();");
// Close the scope for the instantiator class.
builder.CloseScope();
// Close the scope for the class.
builder.CloseScope();
// Close the scope for the namespace
builder.CloseScope();
}
/// <summary>
/// Generate the body of the TryCreateAnimatedVisual() method for the composition that contains LoadedImageSurfaces.
/// </summary>
void WriteTryCreateInstantiatorWithImageLoading(CodeBuilder builder, CodeGenInfo info)
{
builder.WriteLine("m_isTryCreateAnimatedVisualCalled = true;");
builder.WriteLine();
builder.WriteLine("diagnostics = nullptr;");
builder.WriteLine("if (!IsRuntimeCompatible())");
builder.OpenScope();
builder.WriteLine("return nullptr;");
builder.CloseScope();
builder.WriteLine();
builder.WriteLine("EnsureImageLoadingStarted();");
builder.WriteLine();
builder.WriteLine("if (m_isAnimatedVisualSourceDynamic && m_loadCompleteEventCount != c_loadedImageSurfaceCount)");
builder.OpenScope();
builder.WriteLine("return nullptr;");
builder.CloseScope();
builder.WriteLine("return ref new AnimatedVisual(compositor,");
builder.Indent();
builder.WriteCommaSeparatedLines(info.LoadedImageSurfaceNodes.Select(n => MakeFieldName(n.Name)));
builder.UnIndent();
builder.WriteLine(");");
builder.CloseScope();
builder.WriteLine();
}
/// <inheritdoc/>
// Called by the base class to write the end of the file (i.e. everything after the body of the Instantiator class).
protected override void WriteFileEnd(
CodeBuilder builder,
CodeGenInfo info)
{
if (info.UsesCanvasEffects ||
info.UsesCanvasGeometry)
{
// Utility method for D2D geometries
builder.WriteLine("static IGeometrySource2D^ CanvasGeometryToIGeometrySource2D(CanvasGeometry geo)");
builder.OpenScope();
builder.WriteLine("ComPtr<ABI::Windows::Graphics::IGeometrySource2D> interop = geo.Detach();");
builder.WriteLine("return reinterpret_cast<IGeometrySource2D^>(interop.Get());");
builder.CloseScope();
builder.WriteLine();
// Utility method for fail-fasting on bad HRESULTs from d2d operations
builder.WriteLine("static void FFHR(HRESULT hr)");
builder.OpenScope();
builder.WriteLine("if (hr != S_OK)");
builder.OpenScope();
builder.WriteLine("RoFailFastWithErrorContext(hr);");
builder.CloseScope();
builder.CloseScope();
builder.WriteLine();
}
// Write the constructor for the instantiator.
builder.UnIndent();
builder.WriteLine("public:");
builder.Indent();
if (info.HasLoadedImageSurface)
{
builder.WriteLine("AnimatedVisual(Compositor^ compositor,");
builder.Indent();
builder.WriteCommaSeparatedLines(info.LoadedImageSurfaceNodes.Select(n => $"{_stringifier.ReferenceTypeName(n.TypeName)} {_stringifier.CamelCase(n.Name)}"));
// Initializer list.
builder.WriteLine(") : _c(compositor)");
// Instantiate the reusable ExpressionAnimation.
builder.WriteLine($", {info.ReusableExpressionAnimationFieldName}(compositor->CreateExpressionAnimation())");
// Initialize the image surfaces.
var nodes = info.LoadedImageSurfaceNodes.ToArray();
foreach (var n in nodes)
{
builder.WriteLine($", {n.FieldName}({_stringifier.CamelCase(n.Name)})");
}
builder.UnIndent();
}
else
{
builder.WriteLine("AnimatedVisual(Compositor^ compositor)");
// Initializer list.
builder.Indent();
builder.WriteLine(": _c(compositor)");
// Instantiate the reusable ExpressionAnimation.
builder.WriteLine($", {info.ReusableExpressionAnimationFieldName}(compositor->CreateExpressionAnimation())");
builder.UnIndent();
}
builder.OpenScope();
if (info.UsesCanvasEffects ||
info.UsesCanvasGeometry)
{
builder.WriteLine($"{FailFastWrapper("D2D1CreateFactory(D2D1_FACTORY_TYPE_SINGLE_THREADED, _d2dFactory.GetAddressOf())")};");
}
// Instantiate the root. This will cause the whole Visual tree to be built and animations started.
builder.WriteLine("Root();");
builder.CloseScope();
// Write the destructor. This is how CX implements IClosable/IDisposable.
builder.WriteLine("virtual ~AnimatedVisual() { }");
// Write the members on IAnimatedVisual.
builder.WriteLine();
builder.WriteLine("property TimeSpan Duration");
builder.OpenScope();
builder.WriteLine("virtual TimeSpan get() { return { c_durationTicks }; }");
builder.CloseScope();
builder.WriteLine();
builder.WriteLine("property Visual^ RootVisual");
builder.OpenScope();
builder.WriteLine("virtual Visual^ get() { return _root; }");
builder.CloseScope();
builder.WriteLine();
builder.WriteLine("property float2 Size");
builder.OpenScope();
builder.WriteLine($"virtual float2 get() {{ return {Vector2(info.CompositionDeclaredSize)}; }}");
builder.CloseScope();
builder.WriteLine();
// Close the scope for the instantiator class.
builder.UnIndent();
builder.WriteLine("};");
// Close the anonymous namespace.
builder.WriteLine("} // end namespace");
builder.WriteLine();
// Generate the method that creates an instance of the composition.
builder.WriteLine($"Microsoft::UI::Xaml::Controls::IAnimatedVisual^ AnimatedVisuals::{info.ClassName}::TryCreateAnimatedVisual(");
builder.Indent();
builder.WriteLine("Compositor^ compositor,");
builder.WriteLine("Object^* diagnostics)");
builder.UnIndent();
builder.OpenScope();
if (info.HasLoadedImageSurface)
{
WriteTryCreateInstantiatorWithImageLoading(builder, info);
}
else
{
builder.WriteLine("diagnostics = nullptr;");
builder.WriteLine("if (!IsRuntimeCompatible())");
builder.OpenScope();
builder.WriteLine("return nullptr;");
builder.CloseScope();
builder.WriteLine("return ref new AnimatedVisual(compositor);");
builder.CloseScope();
}
if (info.HasLoadedImageSurface)
{
// Generate the get() and set() methods of IsAnimatedVisualSourceDynamic property.
WriteIsAnimatedVisualSourceDynamicGetSet(builder, info);
// Generate the method that load all the LoadedImageSurfaces.
WriteEnsureImageLoadingStarted(builder, info);
// Generate the method that handle the LoadCompleted event of the LoadedImageSurface objects.
WriteHandleLoadCompleted(builder, info);
}
}
