Generic Implementation of Graphics Primitives

This is a library of generic implementations of various graphics primitives.

They are meant to simplify the implementation of the low-level graphics driver by providing generic implementations of primitives that aren't directly supported by the hardware.

Data Structures
struct	gfx_bitmap
	Storage structure for bitmap pixel data and metadata. More...

Typedefs
typedef void(*	gfx_ext_draw_handler_t )(struct gfx_bitmap const *bmp, gfx_coord_t map_x, gfx_coord_t map_y, gfx_coord_t x, gfx_coord_t y)
	Function pointer type for external bitmap draw handlers. More...

Enumerations
enum	gfx_bitmap_type {   GFX_BITMAP_SOLID,   GFX_BITMAP_RAM,   GFX_BITMAP_PROGMEM,   GFX_BITMAP_EXT }
	Valid bitmap types. More...

Functions
static __always_inline void	gfx_generic_draw_bitmap (const struct gfx_bitmap *bmp, gfx_coord_t x, gfx_coord_t y)
void	gfx_generic_draw_bitmap_tiled (const struct gfx_bitmap *bmp, gfx_coord_t x1, gfx_coord_t y1, gfx_coord_t x2, gfx_coord_t y2, gfx_coord_t tile_origin_x, gfx_coord_t tile_origin_y)
void	gfx_generic_draw_circle (gfx_coord_t x, gfx_coord_t y, gfx_coord_t radius, gfx_color_t color, uint8_t octant_mask)
void	gfx_generic_draw_filled_circle (gfx_coord_t x, gfx_coord_t y, gfx_coord_t radius, gfx_color_t color, uint8_t quadrant_mask)
void	gfx_generic_draw_filled_rect (gfx_coord_t x, gfx_coord_t y, gfx_coord_t width, gfx_coord_t height, gfx_color_t color)
static __always_inline void	gfx_generic_draw_horizontal_line (gfx_coord_t x, gfx_coord_t y, gfx_coord_t length, gfx_color_t color)
void	gfx_generic_draw_line (gfx_coord_t x1, gfx_coord_t y1, gfx_coord_t x2, gfx_coord_t y2, gfx_color_t color)
static __always_inline void	gfx_generic_draw_rect (gfx_coord_t x, gfx_coord_t y, gfx_coord_t width, gfx_coord_t height, gfx_color_t color)
static __always_inline void	gfx_generic_draw_vertical_line (gfx_coord_t x, gfx_coord_t y, gfx_coord_t length, gfx_color_t color)
void	gfx_generic_get_pixmap (gfx_color_t *pixmap, gfx_coord_t map_width, gfx_coord_t map_x, gfx_coord_t map_y, gfx_coord_t x, gfx_coord_t y, gfx_coord_t width, gfx_coord_t height)
void	gfx_generic_put_bitmap (const struct gfx_bitmap *bmp, gfx_coord_t map_x, gfx_coord_t map_y, gfx_coord_t x, gfx_coord_t y, gfx_coord_t width, gfx_coord_t height)
void	gfx_generic_put_pixmap (const gfx_color_t *pixmap, gfx_coord_t map_width, gfx_coord_t map_x, gfx_coord_t map_y, gfx_coord_t x, gfx_coord_t y, gfx_coord_t width, gfx_coord_t height)
void	gfx_generic_set_ext_handler (gfx_ext_draw_handler_t gfx_ext_draw)
static __always_inline void	gfx_generic_sync (void)

typedef void(* gfx_ext_draw_handler_t)(struct gfx_bitmap const *bmp, gfx_coord_t map_x, gfx_coord_t map_y, gfx_coord_t x, gfx_coord_t y)

Function pointer type for external bitmap draw handlers.

Parameters

bmp	Pointer to the bitmap.
map_x	Start pos x.
map_y	Start pos y.
x	Width length.
y	Height length.

enum gfx_bitmap_type

Valid bitmap types.

Enumerator
GFX_BITMAP_SOLID	Solid color bitmap
GFX_BITMAP_RAM	Bitmap stored in SRAM
GFX_BITMAP_PROGMEM	Bitmap stored in progmem
GFX_BITMAP_EXT	Draw bitmap through extended interface

static __always_inline void gfx_generic_draw_bitmap ( const struct gfx_bitmap *  bmp, gfx_coord_t  x, gfx_coord_t  y  )

static

Generic implementation of gfx_draw_bitmap().

References gfx_put_bitmap(), gfx_bitmap::height, and gfx_bitmap::width.

void gfx_generic_draw_bitmap_tiled	(	const struct gfx_bitmap *	bmp,
		gfx_coord_t	x1,
		gfx_coord_t	y1,
		gfx_coord_t	x2,
		gfx_coord_t	y2,
		gfx_coord_t	tile_origin_x,
		gfx_coord_t	tile_origin_y
	)

Generic implementation of gfx_draw_bitmap_tiled().

References Assert, gfx_bitmap::color, gfx_bitmap::data, GFX_BITMAP_SOLID, gfx_draw_filled_rect, gfx_put_bitmap(), gfx_bitmap::height, gfx_bitmap::type, and gfx_bitmap::width.

void gfx_generic_draw_circle	(	gfx_coord_t	x,
		gfx_coord_t	y,
		gfx_coord_t	radius,
		gfx_color_t	color,
		uint8_t	octant_mask
	)

Generic implementation of gfx_draw_circle().

References gfx_draw_pixel(), GFX_OCTANT0, GFX_OCTANT1, GFX_OCTANT2, GFX_OCTANT3, GFX_OCTANT4, GFX_OCTANT5, GFX_OCTANT6, and GFX_OCTANT7.

void gfx_generic_draw_filled_circle	(	gfx_coord_t	x,
		gfx_coord_t	y,
		gfx_coord_t	radius,
		gfx_color_t	color,
		uint8_t	quadrant_mask
	)

Generic implementation of gfx_draw_filled_circle().

References gfx_draw_pixel(), gfx_draw_vertical_line, GFX_QUADRANT0, GFX_QUADRANT1, GFX_QUADRANT2, and GFX_QUADRANT3.

void gfx_generic_draw_filled_rect	(	gfx_coord_t	x,
		gfx_coord_t	y,
		gfx_coord_t	width,
		gfx_coord_t	height,
		gfx_color_t	color
	)

Generic implementation of gfx_draw_filled_rect().

References gfx_duplicate_pixel(), gfx_max_x, gfx_max_y, gfx_min_x, gfx_min_y, and gfx_set_limits().

static __always_inline void gfx_generic_draw_horizontal_line ( gfx_coord_t  x, gfx_coord_t  y, gfx_coord_t  length, gfx_color_t  color  )

static

Generic implementation of gfx_draw_horizontal_line().

References gfx_draw_filled_rect.

void gfx_generic_draw_line	(	gfx_coord_t	x1,
		gfx_coord_t	y1,
		gfx_coord_t	x2,
		gfx_coord_t	y2,
		gfx_color_t	color
	)

Generic implementation of gfx_draw_line().

References gfx_draw_line_pixel(), gfx_height, gfx_set_bottom_right_limit(), and gfx_width.

static __always_inline void gfx_generic_draw_rect ( gfx_coord_t  x, gfx_coord_t  y, gfx_coord_t  width, gfx_coord_t  height, gfx_color_t  color  )

static

Generic implementation of gfx_draw_rect().

References gfx_draw_horizontal_line, and gfx_draw_vertical_line.

Referenced by demo_qtouch_event_handler(), and draw_finger_square().

static __always_inline void gfx_generic_draw_vertical_line ( gfx_coord_t  x, gfx_coord_t  y, gfx_coord_t  length, gfx_color_t  color  )

static

Generic implementation of gfx_draw_vertical_line().

References gfx_draw_filled_rect.

void gfx_generic_get_pixmap	(	gfx_color_t *	pixmap,
		gfx_coord_t	map_width,
		gfx_coord_t	map_x,
		gfx_coord_t	map_y,
		gfx_coord_t	x,
		gfx_coord_t	y,
		gfx_coord_t	width,
		gfx_coord_t	height
	)

Generic implementation of gfx_get_pixmap().

References Assert, gfx_copy_pixels_from_screen(), gfx_max_x, gfx_max_y, gfx_min_x, gfx_min_y, gfx_set_bottom_right_limit(), and gfx_set_top_left_limit().

void gfx_generic_put_bitmap	(	const struct gfx_bitmap *	bmp,
		gfx_coord_t	map_x,
		gfx_coord_t	map_y,
		gfx_coord_t	x,
		gfx_coord_t	y,
		gfx_coord_t	width,
		gfx_coord_t	height
	)

Generic implementation of gfx_put_bitmap().

References Assert, gfx_bitmap::color, gfx_bitmap::data, GFX_BITMAP_EXT, GFX_BITMAP_PROGMEM, GFX_BITMAP_RAM, GFX_BITMAP_SOLID, gfx_copy_pixels_to_screen(), gfx_copy_progmem_pixels_to_screen(), gfx_draw_filled_rect, gfx_ext_draw_func, gfx_max_x, gfx_max_y, gfx_min_x, gfx_min_y, gfx_set_bottom_right_limit(), gfx_set_top_left_limit(), NULL, gfx_bitmap::pixmap, gfx_bitmap::progmem, PROGMEM_PTR_T, gfx_bitmap::type, and gfx_bitmap::width.

void gfx_generic_put_pixmap	(	const gfx_color_t *	pixmap,
		gfx_coord_t	map_width,
		gfx_coord_t	map_x,
		gfx_coord_t	map_y,
		gfx_coord_t	x,
		gfx_coord_t	y,
		gfx_coord_t	width,
		gfx_coord_t	height
	)

Generic implementation of gfx_put_pixmap().

References Assert, gfx_copy_pixels_to_screen(), gfx_max_x, gfx_max_y, gfx_min_x, gfx_min_y, gfx_set_bottom_right_limit(), and gfx_set_top_left_limit().

void gfx_generic_set_ext_handler

(

gfx_ext_draw_handler_t

gfx_ext_draw

)

Generic implementation of setting external bitmap draw interface.

References gfx_ext_draw_func.

static __always_inline void gfx_generic_sync ( void  )

static

Generic implementation of gfx_sync().