85 lines
2.3 KiB
C
85 lines
2.3 KiB
C
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/**
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* @file lv_draw_sdl_mask.c
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*
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*/
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/*********************
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* INCLUDES
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*********************/
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#include "../../lv_conf_internal.h"
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#if LV_USE_GPU_SDL
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#include "../../misc/lv_gc.h"
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#include "lv_draw_sdl_mask.h"
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#include "lv_draw_sdl_utils.h"
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/*********************
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* DEFINES
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*********************/
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#ifndef HAVE_SDL_CUSTOM_BLEND_MODE
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#define HAVE_SDL_CUSTOM_BLEND_MODE (SDL_VERSION_ATLEAST(2, 0, 6))
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#endif
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/**********************
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* TYPEDEFS
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**********************/
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/**********************
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* STATIC PROTOTYPES
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**********************/
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/**********************
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* STATIC VARIABLES
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**********************/
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/**********************
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* MACROS
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**********************/
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/**********************
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* GLOBAL FUNCTIONS
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**********************/
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lv_opa_t * lv_draw_sdl_mask_dump_opa(const lv_area_t * coords, const int16_t * ids, int16_t ids_count)
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{
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SDL_assert(coords->x2 >= coords->x1);
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SDL_assert(coords->y2 >= coords->y1);
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lv_coord_t w = lv_area_get_width(coords), h = lv_area_get_height(coords);
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lv_opa_t * mask_buf = lv_mem_buf_get(w * h);
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for(lv_coord_t y = 0; y < h; y++) {
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lv_opa_t * line_buf = &mask_buf[y * w];
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lv_memset_ff(line_buf, w);
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lv_coord_t abs_x = (lv_coord_t) coords->x1, abs_y = (lv_coord_t)(y + coords->y1), len = (lv_coord_t) w;
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lv_draw_mask_res_t res;
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if(ids) {
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res = lv_draw_mask_apply_ids(line_buf, abs_x, abs_y, len, ids, ids_count);
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}
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else {
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res = lv_draw_mask_apply(line_buf, abs_x, abs_y, len);
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}
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if(res == LV_DRAW_MASK_RES_TRANSP) {
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lv_memset_00(line_buf, w);
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}
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}
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return mask_buf;
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}
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SDL_Texture * lv_draw_sdl_mask_dump_texture(SDL_Renderer * renderer, const lv_area_t * coords, const int16_t * ids,
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int16_t ids_count)
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{
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lv_coord_t w = lv_area_get_width(coords), h = lv_area_get_height(coords);
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lv_opa_t * mask_buf = lv_draw_sdl_mask_dump_opa(coords, ids, ids_count);
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SDL_Surface * surface = lv_sdl_create_opa_surface(mask_buf, w, h, w);
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lv_mem_buf_release(mask_buf);
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SDL_Texture * texture = SDL_CreateTextureFromSurface(renderer, surface);
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SDL_FreeSurface(surface);
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return texture;
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}
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/**********************
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* STATIC FUNCTIONS
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**********************/
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#endif /*LV_USE_GPU_SDL*/
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