lv_nanovg_image_cache.h

API reference for lv_nanovg_image_cache.h

Summary

Functions

Get the image handle from the cache, create a new one if not found.

int lv_nanovg_image_cache_get_handle(struct _lv_draw_nanovg_unit_t *u, const void *src, int image_flags, lv_image_header_t *header)

Name	Type	Description
`u`	`struct _lv_draw_nanovg_unit_t *`	pointer to the nanovg unit
`src`	`const void *`	the source image data
`image_flags`	`int`	the image flags
`header`	`lv_image_header_t *`	the image header to fill (can be NULL)

Returns: int — the image handle, or -1 on failure

Modifiable sources (canvas/snapshot/lottie) are detected via the decoded buffer flags and are not cached, so callers don't need to decide.

Initialize the image cache.

void lv_nanovg_image_cache_init(struct _lv_draw_nanovg_unit_t *u)

Name	Type	Description
`u`	`struct _lv_draw_nanovg_unit_t *`	pointer to the nanovg unit

Deinitialize the image cache.

void lv_nanovg_image_cache_deinit(struct _lv_draw_nanovg_unit_t *u)

Name	Type	Description
`u`	`struct _lv_draw_nanovg_unit_t *`	pointer to the nanovg unit

Drop the image from the cache.

void lv_nanovg_image_cache_drop(struct _lv_draw_nanovg_unit_t *u, const void *src)

Name	Type	Description
`u`	`struct _lv_draw_nanovg_unit_t *`	pointer to the nanovg unit
`src`	`const void *`	the source image data