From 9e590e9e15fecd2b26b39ae8b2e5bc018795ebab Mon Sep 17 00:00:00 2001
From: Hermet Park <hermetpark@gmail.com>
Date: Mon, 5 Nov 2018 14:22:58 +0900
Subject: [PATCH] elementary transit: add a new api -
 elm_transit_progress_value_set()

Summary:
This API sets current time progression of the animation.

It intervenes current progress instantly when it requires
to jump onto a specific frame position.

@feature

Reviewers: #committers

Subscribers: cedric, #reviewers, #committers

Tags: #efl

Differential Revision: https://phab.enlightenment.org/D7211

Change-Id: I2519a21b746a6c33d282ef38bf9020dac08166fe
---
 src/lib/elementary/elm_transit.c | 35 +++++++++++++++++++++++++----------
 src/lib/elementary/elm_transit.h | 19 +++++++++++++++++++
 2 files changed, 44 insertions(+), 10 deletions(-)

diff --git a/src/lib/elementary/elm_transit.c b/src/lib/elementary/elm_transit.c
index a38d785..9aaabe9 100644
--- a/src/lib/elementary/elm_transit.c
+++ b/src/lib/elementary/elm_transit.c
@@ -60,7 +60,10 @@ struct _Elm_Transit
         Eina_Bool reverse;
      } repeat;
    double progress;
-   double revert_begin_progress, revert_duration, total_revert_time;
+   double inter_progress;
+   double revert_begin_progress;
+   double revert_duration;
+   double total_revert_time;
    unsigned int effects_pending_del;
    int walking;
    double v[4];
@@ -339,9 +342,6 @@ _transit_animate_cb(void *data)
    elapsed_time = (transit->time.current - transit->time.begin - transit->time.delayed)
       - (2 * transit->total_revert_time);
    duration = transit->time.duration;
-   if (elapsed_time > duration)
-     elapsed_time = duration;
-
    transit->progress = elapsed_time / duration;
 
    if (transit->revert_mode && transit->revert_begin_progress == 0)
@@ -358,6 +358,9 @@ _transit_animate_cb(void *data)
         transit->progress = transit->revert_begin_progress - revert_progress;
      }
 
+   /* Intervention Progress */
+   transit->progress += transit->inter_progress;
+
    switch (transit->tween_mode)
      {
       case ELM_TRANSIT_TWEEN_MODE_LINEAR:
@@ -410,11 +413,8 @@ _transit_animate_cb(void *data)
    /* Reverse? */
    if (transit->repeat.reverse) transit->progress = 1 - transit->progress;
 
-   if (duration > 0)
-     {
-        if (!_transit_animate_op(transit, transit->progress))
-          return ECORE_CALLBACK_CANCEL;
-     }
+   if (!_transit_animate_op(transit, transit->progress))
+     return ECORE_CALLBACK_CANCEL;
 
    if (transit->revert_mode && (transit->progress <= 0 || transit->progress >= 1))
      {
@@ -422,6 +422,7 @@ _transit_animate_cb(void *data)
         transit->time.begin = ecore_loop_time_get();
         transit->time.revert_delayed = 0;
         transit->total_revert_time = 0;
+        transit->inter_progress = 0;
         if ((transit->repeat.count >= 0) &&
             (transit->repeat.current == transit->repeat.count) &&
             ((!transit->auto_reverse) || transit->repeat.reverse))
@@ -435,7 +436,9 @@ _transit_animate_cb(void *data)
      }
 
    /* Not end. Keep going. */
-   if (elapsed_time < duration || transit->revert_mode) return ECORE_CALLBACK_RENEW;
+   if ((!transit->repeat.reverse && transit->progress < 1) ||
+        (transit->repeat.reverse && transit->progress > 0) ||
+        transit->revert_mode) return ECORE_CALLBACK_RENEW;
 
    /* Repeat and reverse and time done! */
    if ((transit->repeat.count >= 0) &&
@@ -458,6 +461,7 @@ _transit_animate_cb(void *data)
    transit->time.begin = ecore_loop_time_get();
    transit->time.delayed = 0;
    transit->total_revert_time = 0;
+   transit->inter_progress = 0;
 
    return ECORE_CALLBACK_RENEW;
 }
@@ -944,6 +948,17 @@ elm_transit_paused_get(const Elm_Transit *transit)
    return EINA_TRUE;
 }
 
+EAPI void
+elm_transit_progress_value_set(Elm_Transit *transit, double progress)
+{
+   ELM_TRANSIT_CHECK_OR_RETURN(transit);
+
+   if (progress < 0) progress = 0;
+   else if (progress > 1) progress = 1;
+
+   transit->inter_progress = (progress - transit->progress);
+}
+
 EAPI double
 elm_transit_progress_value_get(const Elm_Transit *transit)
 {
diff --git a/src/lib/elementary/elm_transit.h b/src/lib/elementary/elm_transit.h
index fb90def..a045af2 100644
--- a/src/lib/elementary/elm_transit.h
+++ b/src/lib/elementary/elm_transit.h
@@ -674,6 +674,25 @@ EAPI Eina_Bool              elm_transit_paused_get(const Elm_Transit *transit);
  */
 EAPI double                 elm_transit_progress_value_get(const Elm_Transit *transit);
 
+
+/**
+ * Set current time progression of the animation.
+ *
+ * Intervene current progress instantly when it requires to jump onto a specific frame position.
+ *
+ * @note @p transit can not be NULL
+ *
+ * @param transit The transit object.
+ * @param progress The time progression value. The value must be in range of (0.0 ~ 1.0).
+ *
+ * @see elm_transit_progress_value_get()
+ *
+ * @since 1.22
+ *
+ * @ingroup Elm_Transit
+ */
+EAPI void                   elm_transit_progress_value_set(Elm_Transit *transit, double progress);
+
 /**
  * Makes the chain relationship between two transits.
  *
-- 
2.7.4