From 6a47c6f33ac51a69cf241d43b74933c09c5d175f Mon Sep 17 00:00:00 2001
From: Gabor Kiss-Vamosi <kisvegabor@gmail.com>
Date: Fri, 12 May 2023 13:23:32 +0200
Subject: [PATCH] feat(refr): in DIRECT_MODE pass the refreshed area in
 flush_cb

related to https://github.com/lvgl/lvgl/issues/4011#issuecomment-1543741410
---
 src/core/lv_refr.c | 5 ++++-
 src/draw/lv_draw.h | 3 +++
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/core/lv_refr.c b/src/core/lv_refr.c
index 51419cfb1..958e3d621 100644
--- a/src/core/lv_refr.c
+++ b/src/core/lv_refr.c
@@ -446,11 +446,13 @@ static void refr_area(const lv_area_t * area_p)
         if(disp_refr->render_mode == LV_DISP_RENDER_MODE_FULL) {
             disp_refr->last_part = 1;
             draw_ctx->clip_area = &disp_area;
+            draw_ctx->clip_area_original = disp_area;
             refr_area_part(draw_ctx);
         }
         else if(disp_refr->render_mode == LV_DISP_RENDER_MODE_DIRECT) {
             disp_refr->last_part = disp_refr->last_area;
             draw_ctx->clip_area = area_p;
+            draw_ctx->clip_area_original = *area_p;
             refr_area_part(draw_ctx);
         }
         return;
@@ -490,6 +492,7 @@ static void refr_area(const lv_area_t * area_p)
         sub_area.x2 = area_p->x2;
         sub_area.y1 = row;
         sub_area.y2 = y2;
+        draw_ctx->clip_area_original = sub_area;
         draw_ctx->buf_area = &sub_area;
         draw_ctx->clip_area = &sub_area;
         draw_ctx->buf = disp_refr->draw_buf_act;
@@ -1055,7 +1058,7 @@ static void draw_buf_flush(lv_disp_t * disp)
             draw_buf_rotate(draw_ctx->buf_area, draw_ctx->buf);
         }
         else {
-            call_flush_cb(disp, draw_ctx->buf_area, draw_ctx->buf);
+            call_flush_cb(disp, &draw_ctx->clip_area_original, draw_ctx->buf);
         }
     }
     /*If there are 2 buffers swap them. With direct mode swap only on the last area*/
diff --git a/src/draw/lv_draw.h b/src/draw/lv_draw.h
index b8710a59d..0a9aab752 100644
--- a/src/draw/lv_draw.h
+++ b/src/draw/lv_draw.h
@@ -73,6 +73,9 @@ typedef struct _lv_draw_ctx_t  {
      */
     const lv_area_t * clip_area;
 
+    /** The original area which is updated*/
+    lv_area_t clip_area_original;
+
     /**
      * The rendered image in draw_ctx->buf will be converted to this format
      * using draw_ctx->buffer_convert.