docs: fix links, add references, rename files (#5138)

docs/widgets/label.rst

@@ -1,3 +1,6 @@
+.. _lv_label:
+
+================
 Label (lv_label)
 ================
 
@@ -6,6 +9,8 @@ Overview
 
 A label is the basic object type that is used to display text.
 
+.. _lv_label_parts_and_styles:
+
 Parts and Styles
 ****************
 
@@ -18,6 +23,8 @@ Parts and Styles
    text <#text-selection>`__. Only ``text_color`` and ``bg_color`` style
    properties can be used.
 
+.. _lv_label_usage:
+
 Usage
 *****
 
@@ -42,6 +49,8 @@ safe to use with :cpp:func:`lv_label_set_text_static` (except when used with
 :cpp:enumerator:`LV_LABEL_LONG_DOT`, as it modifies the buffer in-place), as they are
 stored in ROM memory, which is always accessible.
 
+.. _lv_label_newline:
+
 Newline
 -------
 
@@ -49,6 +58,8 @@ Newline characters are handled automatically by the label object. You
 can use ``\n`` to make a line break. For example:
 ``"line1\nline2\n\nline4"``
 
+.. _lv_label_long_modes:
+
 Long modes
 ----------
 
@@ -79,12 +90,7 @@ this implementation detail is unnoticed. This is not the case with
 :cpp:func:`lv_label_set_text_static` must be writable if you plan to use
 :cpp:enumerator:`LV_LABEL_LONG_DOT`.
 
-Text recolor
-------------
-
-In the text, you can use commands to recolor parts of the text. For
-example: ``"Write a #ff0000 red# word"``. This feature can be enabled
-individually for each label by :cpp:func:`lv_label_set_recolor` function.
+.. _lv_label_text_selection:
 
 Text selection
 --------------
@@ -92,22 +98,25 @@ Text selection
 If enabled by :c:macro:`LV_LABEL_TEXT_SELECTION` part of the text can be
 selected. It's similar to when you use your mouse on a PC to select a
 text. The whole mechanism (click and select the text as you drag your
-finger/mouse) is implemented in `Text area </widgets/textarea>`__ and
+finger/mouse) is implemented in :ref:`Text area <lv_textarea>` and
 the Label widget only allows manual text selection with
 :cpp:expr:`lv_label_get_text_selection_start(label, start_char_index)` and
 :cpp:expr:`lv_label_get_text_selection_start(label, end_char_index)`.
 
+.. _lv_label_text_alignment:
 
 Text alignment
 --------------
 
 To horizontally align the lines of a label the `text_align` style property can be used with
-:cpp:expr:`lv_obj_set_style_text_align()` or :cpp:expr:`lv_style_set_text_align()`
+:cpp:func:`lv_obj_set_style_text_align` or :cpp:func:`lv_style_set_text_align`
 Note that it has a visible effect only if
 
 - the label widget's width is larger than the width of the longest line of the text
 - the text has multiple lines with non equal line length
 
+.. _lv_label_very_long_texts:
+
 Very long texts
 ---------------
 
@@ -115,6 +124,8 @@ LVGL can efficiently handle very long (e.g. > 40k characters) labels by
 saving some extra data (~12 bytes) to speed up drawing. To enable this
 feature, set ``LV_LABEL_LONG_TXT_HINT   1`` in ``lv_conf.h``.
 
+.. _lv_label_custom_scrolling_animations:
+
 Custom scrolling animations
 ---------------------------
 
@@ -124,21 +135,27 @@ customized by setting the animation property of a style, using
 :cpp:func:`lv_style_set_anim`.
 It will be treated as a template which will be used to create the scroll animatins.
 
+.. _lv_label_symbols:
+
 Symbols
 -------
 
 The labels can display symbols alongside letters (or on their own). Read
-the `Font </overview/font>`__ section to learn more about the symbols.
+the :ref:`fonts` section to learn more about the symbols.
+
+.. _lv_label_events:
 
 Events
 ******
 
 No special events are sent by the Label.
 
-See the events of the `Base object </widgets/obj>`__ too.
+See the events of the :ref:`Base object <lv_obj>` too.
 
 Learn more about :ref:`events`.
 
+.. _lv_label_keys:
+
 Keys
 ****
 
@@ -146,10 +163,14 @@ No *Keys* are processed by the object type.
 
 Learn more about :ref:`indev_keys`.
 
+.. _lv_label_example:
+
 Example
 *******
 
 .. include:: ../examples/widgets/label/index.rst
 
+.. _lv_label_api:
+
 API
 ***