[editor] Support space insertion instead of tabs

Elm_Code support and option in Edi to use spaces when the
Tab key is pressed - make this default too.

NEWS

@@ -1,3 +1,12 @@
+=======
+Edi 0.3
+=======
+
+Features:
+
+  * Option to inserts spaces instead of tabs
+
+
 =======
 Edi 0.2
 =======

elm_code/src/lib/widget/elm_code_widget.c

@@ -1006,6 +1006,30 @@ _elm_code_widget_text_at_cursor_insert(Elm_Code_Widget *widget, const char *text
          eo_event_callback_call(ELM_CODE_WIDGET_EVENT_CHANGED_USER, NULL));
 }
 
+static void
+_elm_code_widget_tab_at_cursor_insert(Elm_Code_Widget *widget)
+{
+   Elm_Code_Widget_Data *pd;
+   unsigned int col, row;
+
+   pd = eo_data_scope_get(widget, ELM_CODE_WIDGET_CLASS);
+   if (!pd->tab_inserts_spaces)
+     {
+        _elm_code_widget_text_at_cursor_insert(widget, "\t", 1);
+        return;
+     }
+
+   eo_do(widget,
+         elm_obj_code_widget_cursor_position_get(&col, &row));
+   col = (col - 1) % pd->tabstop;
+
+   while (col < pd->tabstop)
+     {
+        _elm_code_widget_text_at_cursor_insert(widget, " ", 1);
+        col++;
+     }
+}
+
 static void
 _elm_code_widget_newline(Elm_Code_Widget *widget)
 {
@@ -1215,6 +1239,8 @@ _elm_code_widget_key_down_cb(void *data, Evas *evas EINA_UNUSED,
      _elm_code_widget_backspace(widget);
    else if (!strcmp(ev->key, "Delete"))
      _elm_code_widget_delete(widget);
+   else if (!strcmp(ev->key, "Tab"))
+     _elm_code_widget_tab_at_cursor_insert(widget);
 
    else if (ev->string && strlen(ev->string) == 1)
      _elm_code_widget_text_at_cursor_insert(widget, ev->string, 1);
@@ -1445,6 +1471,19 @@ _elm_code_widget_show_whitespace_get(Eo *obj EINA_UNUSED, Elm_Code_Widget_Data *
    return pd->show_whitespace;
 }
 
+EOLIAN static void
+_elm_code_widget_tab_inserts_spaces_set(Eo *obj, Elm_Code_Widget_Data *pd, Eina_Bool spaces)
+{
+   pd->tab_inserts_spaces = spaces;
+   _elm_code_widget_fill(obj);
+}
+
+EOLIAN static Eina_Bool
+_elm_code_widget_tab_inserts_spaces_get(Eo *obj EINA_UNUSED, Elm_Code_Widget_Data *pd)
+{
+   return pd->tab_inserts_spaces;
+}
+
 EOLIAN static void
 _elm_code_widget_cursor_position_set(Eo *obj, Elm_Code_Widget_Data *pd, unsigned int col, unsigned int line)
 {

elm_code/src/lib/widget/elm_code_widget.eo

@@ -130,6 +130,17 @@ class Elm.Code_Widget (Elm.Layout, Elm_Interface_Atspi_Text)
             show_whitespace: Eina_Bool; [[Whether or not we show whitespace characters]]
          }
       }
+      @property tab_inserts_spaces {
+         set {
+            [[Set whether space characters should be inserted instead of tabs.]]
+         }
+         get {
+            [[Get whether or not space characters will be inserted instead of tabs.]]
+         }
+         values {
+            tab_inserts_spaces: Eina_Bool; [[EINA_TRUE if we should insert space characters instead of a tab when the Tab key is pressed]]
+         }
+      }
       @property cursor_position {
          set {
             [[Set the current location of the text cursor.]]

elm_code/src/lib/widget/elm_code_widget_private.h

@@ -23,7 +23,7 @@ typedef struct
    Eina_Bool editable, focussed;
    Eina_Bool show_line_numbers;
    unsigned int line_width_marker, tabstop;
-   Eina_Bool show_whitespace;
+   Eina_Bool show_whitespace, tab_inserts_spaces;
 
    Elm_Code_Widget_Selection_Data *selection;
    Evas_Object *tooltip;

src/bin/edi_config.c

@@ -39,7 +39,7 @@
    ((EDI_CONFIG_FILE_EPOCH << 16) | EDI_CONFIG_FILE_GENERATION)
 
 #  define EDI_PROJECT_CONFIG_FILE_EPOCH 0x0001
-#  define EDI_PROJECT_CONFIG_FILE_GENERATION 0x0002
+#  define EDI_PROJECT_CONFIG_FILE_GENERATION 0x0003
 #  define EDI_PROJECT_CONFIG_FILE_VERSION \
    ((EDI_PROJECT_CONFIG_FILE_EPOCH << 16) | EDI_PROJECT_CONFIG_FILE_GENERATION)
 
@@ -250,6 +250,7 @@ _edi_config_init(void)
    EDI_CONFIG_VAL(D, T, gui.width_marker, EET_T_UINT);
    EDI_CONFIG_VAL(D, T, gui.tabstop, EET_T_UINT);
    EDI_CONFIG_VAL(D, T, gui.toolbar_hidden, EET_T_UCHAR);
+   EDI_CONFIG_VAL(D, T, gui.tab_inserts_spaces, EET_T_UCHAR);
 
    EDI_CONFIG_LIST(D, T, tabs, _edi_proj_cfg_tab_edd);
    EDI_CONFIG_VAL(D, T, launch.path, EET_T_STRING);
@@ -461,6 +462,10 @@ _edi_project_config_load()
    _edi_project_config->font.size = 12;
    IFPCFGEND;
 
+   IFPCFG(0x0003);
+   _edi_project_config->gui.tab_inserts_spaces = EINA_TRUE;
+   IFPCFGEND;
+
    /* limit config values so they are sane */
    EDI_CONFIG_LIMIT(_edi_project_config->font.size, EDI_FONT_MIN, EDI_FONT_MAX);
    EDI_CONFIG_LIMIT(_edi_project_config->gui.width, 150, 10000);

src/bin/edi_config.h

@@ -77,6 +77,7 @@ struct _Edi_Project_Config
         unsigned int width_marker, tabstop;
 
         Eina_Bool toolbar_hidden;
+        Eina_Bool tab_inserts_spaces;
      } gui;
 
    Eina_List *tabs;

src/bin/editor/edi_editor.c

@@ -582,6 +582,7 @@ _edi_editor_config_changed(void *data, int type EINA_UNUSED, void *event EINA_UN
    eo_do(widget,
          elm_obj_code_widget_font_set(_edi_project_config->font.name, _edi_project_config->font.size),
          elm_obj_code_widget_show_whitespace_set(_edi_project_config->gui.show_whitespace),
+         elm_obj_code_widget_tab_inserts_spaces_set(_edi_project_config->gui.tab_inserts_spaces),
          elm_obj_code_widget_line_width_marker_set(_edi_project_config->gui.width_marker),
          elm_obj_code_widget_tabstop_set(_edi_project_config->gui.tabstop));
 

src/bin/screens/edi_settings.c

@@ -60,6 +60,17 @@ _edi_settings_display_whitespace_cb(void *data EINA_UNUSED, Evas_Object *obj,
    _edi_project_config_save();
 }
 
+static void
+_edi_settings_display_tab_inserts_spaces_cb(void *data EINA_UNUSED, Evas_Object *obj,
+                                            void *event EINA_UNUSED)
+{
+   Evas_Object *check;
+
+   check = (Evas_Object *)obj;
+   _edi_project_config->gui.tab_inserts_spaces = elm_check_state_get(check);
+   _edi_project_config_save();
+}
+
 static void
 _edi_settings_display_widthmarker_cb(void *data EINA_UNUSED, Evas_Object *obj,
                                      void *event EINA_UNUSED)
@@ -224,6 +235,16 @@ _edi_settings_display_create(Evas_Object *parent)
    elm_box_pack_end(hbox, spinner);
    evas_object_show(spinner);
 
+   check = elm_check_add(box);
+   elm_object_text_set(check, "Insert spaces when tab is pressed");
+   elm_check_state_set(check, _edi_project_config->gui.tab_inserts_spaces);
+   elm_box_pack_end(box, check);
+   evas_object_size_hint_weight_set(check, EVAS_HINT_EXPAND, 0.0);
+   evas_object_size_hint_align_set(check, 0.0, 0.5);
+   evas_object_smart_callback_add(check, "changed",
+                                  _edi_settings_display_tab_inserts_spaces_cb, NULL);
+   evas_object_show(check);
+
    check = elm_check_add(box);
    elm_object_text_set(check, "Hide Toolbar");
    elm_check_state_set(check, _edi_project_config->gui.toolbar_hidden);