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Copy pathVectorShape.h
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53 lines (42 loc) · 2.35 KB
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#ifndef MICROPY_INCLUDED_SHARED_MODULE_VECTORIO_SHAPE_H
#define MICROPY_INCLUDED_SHARED_MODULE_VECTORIO_SHAPE_H
#include <stdbool.h>
#include <stdint.h>
#include "py/obj.h"
#include "shared-module/displayio/area.h"
#include "shared-module/displayio/Palette.h"
typedef void get_area_function(mp_obj_t shape, displayio_area_t *out_area);
typedef uint32_t get_pixel_function(mp_obj_t shape, int16_t x, int16_t y);
// This struct binds a shape's common Shape support functions (its vector shape interface)
// to its instance pointer. We only check at construction time what the type of the
// associated shape is and link the correct functions up.
// Later when using the shape for drawing logic these functions may be invoked
// unconditionally. This simplifies the addition of new types and restricts the
// respective responsibilities of VectorShape and actual shape implementations.
typedef struct {
mp_obj_t shape;
get_area_function *get_area;
get_pixel_function *get_pixel;
} vectorio_ishape_t;
typedef struct {
mp_obj_base_t base;
vectorio_ishape_t ishape;
mp_obj_t pixel_shader;
int16_t x;
int16_t y;
displayio_buffer_transform_t *absolute_transform;
bool dirty; // True if we need to draw
// Tracks current shape footprint and expands outward as the shape dirties and changes.
// This is suboptimal if you move your shape far. Could add more state to only redraw
// exactly what we left behind.
displayio_area_t ephemeral_dirty_area;
} vectorio_vector_shape_t;
displayio_area_t* vectorio_vector_shape_get_refresh_areas(vectorio_vector_shape_t *self, displayio_area_t *tail);
bool vectorio_vector_shape_get_dirty_area(vectorio_vector_shape_t *self, displayio_area_t *current_dirty_area);
// Area is always in absolute screen coordinates.
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);
// Fills in out_area with the maximum bounds of all related pixels in the last rendered frame. Returns
// false if the vector shape wasn't rendered in the last frame.
bool vectorio_vector_shape_get_previous_area(vectorio_vector_shape_t *self, displayio_area_t *out_area);
void vectorio_vector_shape_finish_refresh(vectorio_vector_shape_t *self);
#endif // MICROPY_INCLUDED_SHARED_MODULE_VECTORIO_SHAPE_H