acid-drop

- Hacking the planet from a LilyGo T-Deck using custom firmware
git clone git://git.acid.vegas/acid-drop.git
lv_draw_sdl_mask.c (2362B)
      1 /**
      2  * @file lv_draw_sdl_mask.c
      3  *
      4  */
      5 
      6 /*********************
      7  *      INCLUDES
      8  *********************/
      9 #include "../../lv_conf_internal.h"
     10 
     11 #if LV_USE_GPU_SDL
     12 
     13 #include "../../misc/lv_gc.h"
     14 #include "lv_draw_sdl_mask.h"
     15 #include "lv_draw_sdl_utils.h"
     16 
     17 /*********************
     18  *      DEFINES
     19  *********************/
     20 #ifndef HAVE_SDL_CUSTOM_BLEND_MODE
     21     #define HAVE_SDL_CUSTOM_BLEND_MODE (SDL_VERSION_ATLEAST(2, 0, 6))
     22 #endif
     23 
     24 /**********************
     25  *      TYPEDEFS
     26  **********************/
     27 
     28 /**********************
     29  *  STATIC PROTOTYPES
     30  **********************/
     31 
     32 /**********************
     33  *  STATIC VARIABLES
     34  **********************/
     35 
     36 /**********************
     37  *      MACROS
     38  **********************/
     39 
     40 /**********************
     41  *   GLOBAL FUNCTIONS
     42  **********************/
     43 
     44 lv_opa_t * lv_draw_sdl_mask_dump_opa(const lv_area_t * coords, const int16_t * ids, int16_t ids_count)
     45 {
     46     SDL_assert(coords->x2 >= coords->x1);
     47     SDL_assert(coords->y2 >= coords->y1);
     48     lv_coord_t w = lv_area_get_width(coords), h = lv_area_get_height(coords);
     49     lv_opa_t * mask_buf = lv_mem_buf_get(w * h);
     50     for(lv_coord_t y = 0; y < h; y++) {
     51         lv_opa_t * line_buf = &mask_buf[y * w];
     52         lv_memset_ff(line_buf, w);
     53         lv_coord_t abs_x = (lv_coord_t) coords->x1, abs_y = (lv_coord_t)(y + coords->y1), len = (lv_coord_t) w;
     54         lv_draw_mask_res_t res;
     55         if(ids) {
     56             res = lv_draw_mask_apply_ids(line_buf, abs_x, abs_y, len, ids, ids_count);
     57         }
     58         else {
     59             res = lv_draw_mask_apply(line_buf, abs_x, abs_y, len);
     60         }
     61         if(res == LV_DRAW_MASK_RES_TRANSP) {
     62             lv_memset_00(line_buf, w);
     63         }
     64     }
     65     return mask_buf;
     66 }
     67 
     68 SDL_Texture * lv_draw_sdl_mask_dump_texture(SDL_Renderer * renderer, const lv_area_t * coords, const int16_t * ids,
     69                                             int16_t ids_count)
     70 {
     71     lv_coord_t w = lv_area_get_width(coords), h = lv_area_get_height(coords);
     72     lv_opa_t * mask_buf = lv_draw_sdl_mask_dump_opa(coords, ids, ids_count);
     73     SDL_Surface * surface = lv_sdl_create_opa_surface(mask_buf, w, h, w);
     74     lv_mem_buf_release(mask_buf);
     75     SDL_Texture * texture = SDL_CreateTextureFromSurface(renderer, surface);
     76     SDL_FreeSurface(surface);
     77     return texture;
     78 }
     79 
     80 /**********************
     81  *   STATIC FUNCTIONS
     82  **********************/
     83 
     84 #endif /*LV_USE_GPU_SDL*/