spinner: add min, max filter

Summary:
In spinner's entry allow numbers only with in min/max range
Signed-off-by: Shilpa Singh <shilpa.singh@samsung.com>

@feature

Test Plan:
1. Set min/max value to spinner
2. Enter numbers beyond min/max value

Reviewers: CHAN, cedric

Reviewed By: cedric

Subscribers: subodh6129, buds, govi, CHAN, cedric, raster, id213sin

Differential Revision: https://phab.enlightenment.org/D3265

Signed-off-by: Cedric BAIL <cedric@osg.samsung.com>

legacy/elementary/config/default/base.src.in

@@ -98,6 +98,7 @@ group "Elm_Config" struct {
   value "naviframe_prev_btn_auto_pushed" uchar: 1;
   value "popup_horizontal_align" double: 0.5;
   value "popup_vertical_align" double: 0.5;
+  value "spinner_min_max_filter_enable" uchar: 0;
   group "color_palette" list {
      group "Elm_Custom_Palette" struct {
         value "palette_name" string: "default";

legacy/elementary/config/mobile/base.src.in

@@ -102,6 +102,7 @@ group "Elm_Config" struct {
   value "naviframe_prev_btn_auto_pushed" uchar: 1;
   value "popup_horizontal_align" double: 0.5;
   value "popup_vertical_align" double: 0.5;
+  value "spinner_min_max_filter_enable" uchar: 1;
   group "color_palette" list {
      group "Elm_Custom_Palette" struct {
         value "palette_name" string: "default";

legacy/elementary/config/standard/base.src.in

@@ -99,6 +99,7 @@ group "Elm_Config" struct {
   value "naviframe_prev_btn_auto_pushed" uchar: 1;
   value "popup_horizontal_align" double: 0.5;
   value "popup_vertical_align" double: 0.5;
+  value "spinner_min_max_filter_enable" uchar: 0;
   group "color_palette" list {
      group "Elm_Custom_Palette" struct {
         value "palette_name" string: "default";

legacy/elementary/src/lib/elm_config.c

@@ -496,6 +496,7 @@ _desc_init(void)
    ELM_CONFIG_VAL(D, T, naviframe_prev_btn_auto_pushed, T_UCHAR);
    ELM_CONFIG_VAL(D, T, popup_horizontal_align, T_DOUBLE);
    ELM_CONFIG_VAL(D, T, popup_vertical_align, T_DOUBLE);
+   ELM_CONFIG_VAL(D, T, spinner_min_max_filter_enable, T_UCHAR);
 #undef T
 #undef D
 #undef T_INT
@@ -1797,6 +1798,7 @@ _config_load(void)
    _elm_config->indicator_service_270 = eina_stringshare_add("elm_indicator_landscape");
    _elm_config->disable_external_menu = EINA_FALSE;
    _elm_config->magnifier_enable = EINA_TRUE;
+   _elm_config->spinner_min_max_filter_enable = EINA_FALSE;
    _elm_config->magnifier_scale = 1.5;
    _elm_config->audio_mute_effect = 0;
    _elm_config->audio_mute_background = 0;
@@ -2497,6 +2499,8 @@ _env_get(void)
    if (s) _elm_config->magnifier_scale = _elm_atof(s);
    s = getenv("ELM_ATSPI_MODE");
    if (s) _elm_config->atspi_mode = ELM_ATSPI_MODE_ON;
+   s = getenv("ELM_SPINNER_MIN_MAX_FILTER_ENABLE");
+   if (s) _elm_config->spinner_min_max_filter_enable = !!atoi(s);
 
    s = getenv("ELM_TRANSITION_DURATION_FACTOR");
    if (s) _elm_config->transition_duration_factor = atof(s);

legacy/elementary/src/lib/elm_priv.h

@@ -308,6 +308,7 @@ struct _Elm_Config
    unsigned char win_auto_focus_animate;
    double        transition_duration_factor;
    unsigned char naviframe_prev_btn_auto_pushed;
+   unsigned char spinner_min_max_filter_enable;
    Eina_List    *bindings;
    Eina_Bool     atspi_mode;
    int           gl_depth;

legacy/elementary/src/lib/elm_spinner.c

@@ -81,7 +81,7 @@ _is_label_format_integer(const char *fmt)
         if ((*itr == 'd') || (*itr == 'u') || (*itr == 'i') ||
             (*itr == 'o') || (*itr == 'x') || (*itr == 'X'))
           return EINA_TRUE;
-        else if ((*itr == 'f'))
+        else if ((*itr == 'f') || (*itr == 'F'))
           return EINA_FALSE;
      }
 
@@ -421,6 +421,56 @@ _entry_filter_add(Evas_Object *obj)
    elm_entry_markup_filter_append(sd->ent, elm_entry_filter_accept_set, &digits_filter_data);
 }
 
+char *
+_text_insert(const char *text, const char *input, int pos)
+{
+   char *result = NULL;
+   int text_len, input_len;
+
+   text_len = evas_string_char_len_get(text);
+   input_len = evas_string_char_len_get(input);
+   result = (char *)calloc(text_len + input_len + 1, sizeof(char));
+   if (!result) return NULL;
+
+   strncpy(result, text, pos);
+   strcpy(result + pos, input);
+   strcpy(result + pos + input_len, text + pos);
+
+   return result;
+}
+
+static void
+_min_max_validity_filter(void *data, Evas_Object *obj, char **text)
+{
+   const char *str, *new_str;
+   char *insert;
+   double val;
+   int max_len, len;
+
+   EINA_SAFETY_ON_NULL_RETURN(data);
+   EINA_SAFETY_ON_NULL_RETURN(obj);
+   EINA_SAFETY_ON_NULL_RETURN(text);
+
+   ELM_SPINNER_DATA_GET(data, sd);
+
+   str = elm_object_text_get(obj);
+   if (!str) return;
+
+   insert = *text;
+   new_str = _text_insert(str, insert, elm_entry_cursor_pos_get(obj));
+   if (!new_str) return;
+
+   max_len = log10(abs(sd->val_max)) + 1;
+   len = evas_string_char_len_get(new_str);
+   if (len < max_len) return;
+
+   val = strtod(new_str, NULL);
+   ELM_SAFE_FREE(new_str, free);
+
+   if ((val < sd->val_min) || (val > sd->val_max))
+     *insert = 0;
+}
+
 static void
 _entry_show_cb(void *data,
                Evas *e EINA_UNUSED,
@@ -468,6 +518,8 @@ _toggle_entry(Evas_Object *obj)
                (ELM_ENTRY_EVENT_ACTIVATED, _entry_activated_cb, obj));
              elm_layout_content_set(obj, "elm.swallow.entry", sd->ent);
              _entry_filter_add(obj);
+             if (_elm_config->spinner_min_max_filter_enable)
+               elm_entry_markup_filter_append(sd->ent, _min_max_validity_filter, obj);
           }
         if (!sd->button_layout)
           {