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May 21, 2019 07:23
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Graphics2D.rs draft
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| // Written by CrLF0710<crlf0710@gmail.com> | |
| // Licensed with MIT OR Apache-2.0 | |
| trait GraphicsSolution { | |
| } | |
| trait GraphicsContextBuilder<T: GraphicsSolution> { | |
| type ImmediateContext: GraphicsContext; | |
| type RetainedRasterContext: GraphicsContext; | |
| type RetainedVectorContext: GraphicsContext; | |
| fn create_immediate_context(&mut self) -> Self::ImmediateContext; | |
| fn create_retained_raster_context(&self) -> Self::RetainedRasterContext; | |
| fn create_retained_vector_context(&self) -> Self::RetainedVectorContext; | |
| } | |
| trait GraphicsContext { | |
| type Coord; | |
| type SignedLength; | |
| type Coefficient; | |
| type ClippableShape; | |
| type FillableShape; | |
| type FillableColor; | |
| type TransferableSurface; | |
| type ComplexGraphics; | |
| fn save_transform_and_clipping(&mut self); | |
| fn restore_transform_and_clipping(&mut self); | |
| fn append_transform(&mut self, transform: Transform<Self>); | |
| fn append_clipping(&mut self, clipping: Self::ClippableShape); | |
| fn draw_fallback_graphics(&mut self, graphics: FallbackGraphics<Self>); | |
| fn draw_filling_graphics(&mut self, graphics: FillingGraphics<Self>); | |
| fn draw_transfer_graphics(&mut self, graphics: TransferGraphics<Self>); | |
| fn draw_complex_graphics(&mut self, graphics: ComplexGraphics<Self>); | |
| } | |
| struct Transform<T: GraphicsContext + ?Sized> { | |
| coeffs: [T::Coefficient; 4], | |
| coords: [T::Coord; 2], | |
| } | |
| struct Point<T: GraphicsContext + ?Sized> { | |
| coords: [T::Coord; 2] | |
| } | |
| enum SimpleLineExtent<T: GraphicsContext + ?Sized> { | |
| Horz(T::SignedLength), | |
| Vert(T::SignedLength), | |
| } | |
| struct SimpleLine<T: GraphicsContext + ?Sized> { | |
| anchor: Point<T>, | |
| extent: SimpleLineExtent<T>, | |
| } | |
| struct SimpleRectExtent<T: GraphicsContext + ?Sized> { | |
| width: T::SignedLength, | |
| height: T::SignedLength, | |
| } | |
| struct SimpleRect<T: GraphicsContext + ?Sized> { | |
| anchor: Point<T>, | |
| extent: SimpleRectExtent<T>, | |
| } | |
| enum FallbackGraphics<T: GraphicsContext + ?Sized> { | |
| FallbackPoint(Point<T>, T::FillableColor), | |
| FallbackLine(SimpleLine<T>, T::FillableColor), | |
| FallbackRect(SimpleRect<T>, T::FillableColor), | |
| FallbackEverywhere(T::FillableColor), | |
| } | |
| struct FillingGraphics<T: GraphicsContext + ?Sized> { | |
| shape: T::FillableShape, | |
| color: T::FillableColor | |
| } | |
| struct TransferGraphics<'a, T: GraphicsContext + ?Sized> { | |
| rect: SimpleRect<T>, | |
| surface: &'a T::TransferableSurface, | |
| } | |
| struct ComplexGraphics<'a, T: GraphicsContext + ?Sized> { | |
| graphics: &'a T::ComplexGraphics, | |
| } |
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