img zoom fix when computing with the edge pixels

lvgl · Dec 21, 2019 · 65d79a7 · 65d79a7
1 parent af14534
commit 65d79a7
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Showing 2 changed files with 4 additions and 131 deletions.
diff --git a/a.txt b/a.txt
diff --git a/src/lv_draw/lv_img_buf.c b/src/lv_draw/lv_img_buf.c
@@ -512,11 +512,11 @@ static inline bool transform_anti_alias(lv_img_transform_dsc_t * dsc)
 
     if(xs_fract < 0x70) {
           xn = - 1;
-          if(dsc->tmp.xs_int + xn < 0) return false;
+          if(dsc->tmp.xs_int + xn < 0) xn = 0;
           xr = xs_fract + 0x80;
     } else if(xs_fract > 0x90) {
         xn =  1;
-        if(dsc->tmp.xs_int + xn >= dsc->cfg.src_w) return false;
+        if(dsc->tmp.xs_int + xn >= dsc->cfg.src_w) xn = 0;
         xr = (0xFF - xs_fract) + 0x80;
     } else {
         xn = 0;
@@ -528,12 +528,12 @@ static inline bool transform_anti_alias(lv_img_transform_dsc_t * dsc)
 
     if(ys_fract < 0x70) {
           yn = - 1;
-          if(dsc->tmp.ys_int + yn < 0) return false;
+          if(dsc->tmp.ys_int + yn < 0) yn = 0;
 
           yr = ys_fract + 0x80;
     } else if(ys_fract > 0x90) {
         yn =  1;
-        if(dsc->tmp.ys_int + yn >= dsc->cfg.src_h) return false;
+        if(dsc->tmp.ys_int + yn >= dsc->cfg.src_h) yn = 0;
 
         yr = (0xFF - ys_fract) + 0x80;
     } else {