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add lv_canvas_get_img()

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This commit is contained in:
Gabor Kiss-Vamosi 2019-03-26 15:35:45 +01:00
parent 21eab152a6
commit 9347165a5a
2 changed files with 13 additions and 1 deletions
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12
src/lv_objx/lv_canvas.c
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@ -171,6 +171,18 @@ lv_color_t lv_canvas_get_px(lv_obj_t * canvas, lv_coord_t x, lv_coord_t y)
return lv_img_buf_get_px(&ext->dsc, x, y); return lv_img_buf_get_px(&ext->dsc, x, y);
} }
/**
* Get the image of the canvas as a pointer to an `lv_img_dsc_t` variable.
* @param canvas pointer to a canvas object
* @return pointer to the image descriptor.
*/
lv_img_dsc_t * lv_canvas_get_img(lv_obj_t * canvas)
{
lv_canvas_ext_t * ext = lv_obj_get_ext_attr(canvas);
return &ext->img;
}
/** /**
* Get style of a canvas. * Get style of a canvas.
* @param canvas pointer to canvas object * @param canvas pointer to canvas object

2
src/lv_objx/lv_canvas.h
View File

@ -111,8 +111,8 @@ lv_color_t lv_canvas_get_px(lv_obj_t * canvas, lv_coord_t x, lv_coord_t y);
* Get the image of the canvas as a pointer to an `lv_img_dsc_t` variable. * Get the image of the canvas as a pointer to an `lv_img_dsc_t` variable.
* @param canvas pointer to a canvas object * @param canvas pointer to a canvas object
* @return pointer to the image descriptor. * @return pointer to the image descriptor.
lv_img_dsc_t * lv_canvas_get_img(lv_obj_t * canvas);
*/ */
lv_img_dsc_t * lv_canvas_get_img(lv_obj_t * canvas);
/** /**
* Get style of a canvas. * Get style of a canvas.