edje_calc: make INTP use TO_INT_ROUND

Summary:
The edje_part_recalc calculates next postion(p3).
Please refer to following line.

   p3->final.y = INTP(p1->final.y, p2->final.y, pos);

If the condition is as blow, then p3->final.y becomes -50 only if pos is 1.0.
Because INP uses TO_INT not TO_INT_ROUND.

   p1->final.y == -32
   p2->final.y == -50

So we had nonsmooth ending of transition.

Test Plan:
Sample application to check this issue. Please look carefully when the rect moves from bottom to top.

{F3627740}

{F3627739}

Reviewers: cedric, Hermet, jypark

Reviewed By: Hermet

Subscribers: zmike, akanad, #reviewers, #committers

Tags: #efl

Differential Revision: https://phab.enlightenment.org/D7842

2 files changed, 30 insertions, 11 deletions

diff --git a/src/lib/edje/edje_calc.c b/src/lib/edje/edje_calc.c
index ffb46c075b..3e3bf29850 100644
--- a/src/lib/edje/edje_calc.c
+++ b/src/lib/edje/edje_calc.c
@@ -2397,12 +2397,29 @@ _edje_filter_get(Edje *ed, Edje_Part_Description_Spec_Filter *filter)
 static void
 _edje_part_pixel_adjust(Edje *ed,
                         Edje_Real_Part *ep,
-                        Edje_Calc_Params *params)
+                        Edje_Calc_Params *params,
+                        Eina_Bool round)
 {
+   int xw, yh, fxw, fyh;
+
+   xw = ABS(params->final.x) + params->final.w;
+   yh = ABS(params->final.y) + params->final.h;
+
+   if (round)
+     {
+        fxw = TO_INT_ROUND(ADD(ABS(params->eval.x), params->eval.w));
+        fyh = TO_INT_ROUND(ADD(ABS(params->eval.y), params->eval.h));
+     }
+   else
+     {
+        fxw = TO_INT(ADD(ABS(params->eval.x), params->eval.w));
+        fyh = TO_INT(ADD(ABS(params->eval.y), params->eval.h));
+     }
+
    /* Adjust rounding to not loose one pixels compared to float
       information only when rendering to avoid infinite adjustement
       when doing min restricted calc */
-   if (ABS(params->final.x) + params->final.w < TO_INT(ADD(ABS(params->eval.x), params->eval.w)))
+   if (xw < fxw)
      {
         if (!ed->calc_only)
           {
@@ -2413,7 +2430,7 @@ _edje_part_pixel_adjust(Edje *ed,
              ep->invalidate = EINA_TRUE;
           }
      }
-   else if (ABS(params->final.x) + params->final.w > TO_INT(ADD(ABS(params->eval.x), params->eval.w)))
+   else if (xw > fxw)
      {
         if (!ed->calc_only)
           {
@@ -2424,7 +2441,8 @@ _edje_part_pixel_adjust(Edje *ed,
              ep->invalidate = EINA_TRUE;
           }
      }
-   if (ABS(params->final.y) + params->final.h < TO_INT(ADD(ABS(params->eval.y), params->eval.h)))
+
+   if (yh < fyh)
      {
         if (!ed->calc_only)
           {
@@ -2435,7 +2453,7 @@ _edje_part_pixel_adjust(Edje *ed,
              ep->invalidate = EINA_TRUE;
           }
      }
-   else if (ABS(params->final.y) + params->final.h > TO_INT(ADD(ABS(params->eval.y), params->eval.h)))
+   else if (yh > fyh)
      {
         if (!ed->calc_only)
           {
@@ -2449,7 +2467,6 @@ _edje_part_pixel_adjust(Edje *ed,
 
    if (params->final.w < 0 || params->final.h < 0)
      ERR("The params final size became negative");
-
 }
 
 static void
@@ -2994,7 +3011,7 @@ _edje_part_recalc_single(Edje *ed,
    params->final.w = TO_INT(params->eval.w);
    params->final.h = TO_INT(params->eval.h);
 
-   _edje_part_pixel_adjust(ed, ep, params);
+   _edje_part_pixel_adjust(ed, ep, params, EINA_FALSE);
    /* fill */
    if (ep->part->type == EDJE_PART_TYPE_IMAGE)
      _edje_part_recalc_single_fill(ep, &((Edje_Part_Description_Image *)desc)->image.fill, params);
@@ -3456,7 +3473,7 @@ _edje_physics_body_add(Edje *ed, Edje_Real_Part *rp, EPhysics_World *world)
    ? (_x1)                \
    : ADD(_x1, MUL(_p, SUB(_x2, _x1))));
 
-#define INTP(_x1, _x2, _p) TO_INT(FINTP(_x1, _x2, _p))
+#define INTP(_x1, _x2, _p) TO_INT_ROUND(FINTP(_x1, _x2, _p))
 
 static void
 _map_colors_free(Edje_Calc_Params *pf)
@@ -4343,7 +4360,7 @@ _edje_part_recalc(Edje *ed, Edje_Real_Part *ep, int flags, Edje_Calc_Params *sta
         p3->req.w = INTP(p1->req.w, p2->req.w, pos);
         p3->req.h = INTP(p1->req.h, p2->req.h, pos);
 
-        _edje_part_pixel_adjust(ed, ep, p3);
+        _edje_part_pixel_adjust(ed, ep, p3, EINA_TRUE);
 
         if (ep->part->dragable.x)
           {
diff --git a/src/lib/edje/edje_private.h b/src/lib/edje/edje_private.h
index a92e5b1273..6ae592680f 100644
--- a/src/lib/edje/edje_private.h
+++ b/src/lib/edje/edje_private.h
@@ -155,7 +155,9 @@ EAPI extern int _edje_default_log_dom ;
 #define FROM_DOUBLE(a) eina_f32p32_double_from(a)
 #define FROM_INT(a) eina_f32p32_int_from(a)
 #define TO_INT(a) eina_f32p32_int_to(a)
-#define TO_INT_ROUND(a) eina_f32p32_int_to(ADD(a, FROM_DOUBLE(0.5)))
+#define TO_INT_ROUND(a) (((a) >= 0.0) \
+  ? eina_f32p32_int_to(ADD(a, FROM_DOUBLE(0.5)) \
+  : eina_f32p32_int_to(ADD(a, FROM_DOUBLE(-0.5))
 #define ZERO 0
 #define COS(a) eina_f32p32_cos(a)
 #define SIN(a) eina_f32p32_sin(a)
@@ -178,7 +180,7 @@ EAPI extern int _edje_default_log_dom ;
 #define FROM_DOUBLE(a) (a)
 #define FROM_INT(a) (double)(a)
 #define TO_INT(a) (int)(a)
-#define TO_INT_ROUND(a) (int)(a + 0.5)
+#define TO_INT_ROUND(a) (((a) >= 0.0) ? (int)(a + 0.5) : (int)(a - 0.5))
 #define ZERO 0.0
 #define COS(a) cos(a)
 #define SIN(a) sin(a)