94 lines
2.7 KiB
C
94 lines
2.7 KiB
C
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/**
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* @file lv_draw_layer.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_draw.h"
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#include "lv_draw_arc.h"
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#include "../core/lv_refr.h"
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/*********************
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* DEFINES
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*********************/
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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_draw_layer_ctx_t * lv_draw_layer_create(lv_draw_ctx_t * draw_ctx, const lv_area_t * layer_area,
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lv_draw_layer_flags_t flags)
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{
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if(draw_ctx->layer_init == NULL) return NULL;
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lv_draw_layer_ctx_t * layer_ctx = lv_mem_alloc(draw_ctx->layer_instance_size);
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LV_ASSERT_MALLOC(layer_ctx);
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if(layer_ctx == NULL) {
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LV_LOG_WARN("Couldn't allocate a new layer context");
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return NULL;
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}
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lv_memset_00(layer_ctx, draw_ctx->layer_instance_size);
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lv_disp_t * disp_refr = _lv_refr_get_disp_refreshing();
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layer_ctx->original.buf = draw_ctx->buf;
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layer_ctx->original.buf_area = draw_ctx->buf_area;
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layer_ctx->original.clip_area = draw_ctx->clip_area;
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layer_ctx->original.screen_transp = disp_refr->driver->screen_transp;
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layer_ctx->area_full = *layer_area;
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lv_draw_layer_ctx_t * init_layer_ctx = draw_ctx->layer_init(draw_ctx, layer_ctx, flags);
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if(NULL == init_layer_ctx) {
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lv_mem_free(layer_ctx);
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}
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return init_layer_ctx;
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}
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void lv_draw_layer_adjust(struct _lv_draw_ctx_t * draw_ctx, struct _lv_draw_layer_ctx_t * layer_ctx,
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lv_draw_layer_flags_t flags)
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{
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if(draw_ctx->layer_adjust) draw_ctx->layer_adjust(draw_ctx, layer_ctx, flags);
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}
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void lv_draw_layer_blend(struct _lv_draw_ctx_t * draw_ctx, struct _lv_draw_layer_ctx_t * layer_ctx,
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lv_draw_img_dsc_t * draw_dsc)
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{
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if(draw_ctx->layer_blend) draw_ctx->layer_blend(draw_ctx, layer_ctx, draw_dsc);
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}
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void lv_draw_layer_destroy(lv_draw_ctx_t * draw_ctx, lv_draw_layer_ctx_t * layer_ctx)
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{
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lv_draw_wait_for_finish(draw_ctx);
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draw_ctx->buf = layer_ctx->original.buf;
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draw_ctx->buf_area = layer_ctx->original.buf_area;
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draw_ctx->clip_area = layer_ctx->original.clip_area;
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lv_disp_t * disp_refr = _lv_refr_get_disp_refreshing();
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disp_refr->driver->screen_transp = layer_ctx->original.screen_transp;
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if(draw_ctx->layer_destroy) draw_ctx->layer_destroy(draw_ctx, layer_ctx);
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lv_mem_free(layer_ctx);
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}
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/**********************
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* STATIC FUNCTIONS
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**********************/
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