54 lines
2.3 KiB
C
54 lines
2.3 KiB
C
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#ifndef MICROPY_INCLUDED_SHARED_MODULE_VECTORIO_SHAPE_H
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#define MICROPY_INCLUDED_SHARED_MODULE_VECTORIO_SHAPE_H
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#include <stdbool.h>
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#include <stdint.h>
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#include "py/obj.h"
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#include "shared-module/displayio/area.h"
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#include "shared-module/displayio/Palette.h"
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typedef void get_area_function(mp_obj_t shape, displayio_area_t *out_area);
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typedef uint32_t get_pixel_function(mp_obj_t shape, int16_t x, int16_t y);
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// This struct binds a shape's common Shape support functions (its vector shape interface)
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// to its instance pointer. We only check at construction time what the type of the
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// associated shape is and link the correct functions up.
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// Later when using the shape for drawing logic these functions may be invoked
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// unconditionally. This simplifies the addition of new types and restricts the
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// respective responsibilities of VectorShape and actual shape implementations.
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typedef struct {
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mp_obj_t shape;
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get_area_function *get_area;
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get_pixel_function *get_pixel;
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} vectorio_ishape_t;
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typedef struct {
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mp_obj_base_t base;
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vectorio_ishape_t ishape;
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mp_obj_t pixel_shader;
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int16_t x;
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int16_t y;
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displayio_buffer_transform_t *absolute_transform;
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bool dirty; // True if we need to draw
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// Tracks current shape footprint and expands outward as the shape dirties and changes.
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// This is suboptimal if you move your shape far. Could add more state to only redraw
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// exactly what we left behind.
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displayio_area_t ephemeral_dirty_area;
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} vectorio_vector_shape_t;
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displayio_area_t* vectorio_vector_shape_get_refresh_areas(vectorio_vector_shape_t *self, displayio_area_t *tail);
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bool vectorio_vector_shape_get_dirty_area(vectorio_vector_shape_t *self, displayio_area_t *current_dirty_area);
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// Area is always in absolute screen coordinates.
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bool vectorio_vector_shape_fill_area(vectorio_vector_shape_t *self, const _displayio_colorspace_t *colorspace, const displayio_area_t *area, uint32_t *mask, uint32_t *buffer);
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// Fills in out_area with the maximum bounds of all related pixels in the last rendered frame. Returns
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// false if the vector shape wasn't rendered in the last frame.
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bool vectorio_vector_shape_get_previous_area(vectorio_vector_shape_t *self, displayio_area_t *out_area);
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void vectorio_vector_shape_finish_refresh(vectorio_vector_shape_t *self);
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#endif // MICROPY_INCLUDED_SHARED_MODULE_VECTORIO_SHAPE_H
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