[pango/matthiasc/for-main] docs: Add an example for split cursors

[Matthias Clasen <matthiasc src gnome org>]

commit 2606e8e02580894a483beb2f2a282b37cdf05631
Author: Matthias Clasen <mclasen redhat com>
Date:   Mon Aug 9 01:29:36 2021 -0400

    docs: Add an example for split cursors
    
    Show how weak and strong cursors look in
    practice.
    
    Fixes: #77

 docs/meson.build            |   3 +++
 docs/pango.toml.in          |   2 ++
 docs/split-cursor-dark.png  | Bin 0 -> 10603 bytes
 docs/split-cursor-light.png | Bin 0 -> 10248 bytes
 docs/split-cursor.png       | Bin 0 -> 10944 bytes
 pango/pango-layout.c        |  16 +++++++++++++++-
 6 files changed, 20 insertions(+), 1 deletion(-)
---
diff --git a/docs/meson.build b/docs/meson.build
index 37a2a9b3..6bdfc1f7 100644
--- a/docs/meson.build
+++ b/docs/meson.build
@@ -31,6 +31,9 @@ pango_content_files = [
   'bidi-input-dark.png',
   'bidi-annotate-light.png',
   'bidi-annotate-dark.png',
+  'split-cursor.png',
+  'split-cursor-light.png',
+  'split-cursor-dark.png'
 ]
 
 doc_conf = configuration_data()
diff --git a/docs/pango.toml.in b/docs/pango.toml.in
index 4317adf4..f5e58194 100644
--- a/docs/pango.toml.in
+++ b/docs/pango.toml.in
@@ -90,4 +90,6 @@ content_images = [
   "bidi-input-dark.png",
   "bidi-annotate-light.png",
   "bidi-annotate-dark.png",
+  "split-cursor-light.png",
+  "split-cursor-dark.png",
 ]
diff --git a/docs/split-cursor-dark.png b/docs/split-cursor-dark.png
new file mode 100644
index 00000000..141d818c
Binary files /dev/null and b/docs/split-cursor-dark.png differ
diff --git a/docs/split-cursor-light.png b/docs/split-cursor-light.png
new file mode 100644
index 00000000..2ace0c18
Binary files /dev/null and b/docs/split-cursor-light.png differ
diff --git a/docs/split-cursor.png b/docs/split-cursor.png
new file mode 100644
index 00000000..b2be8021
Binary files /dev/null and b/docs/split-cursor.png differ
diff --git a/pango/pango-layout.c b/pango/pango-layout.c
index 557f16f5..fa13ad59 100644
--- a/pango/pango-layout.c
+++ b/pango/pango-layout.c
@@ -2431,11 +2431,25 @@ pango_layout_get_direction (PangoLayout *layout,
  * Given an index within a layout, determines the positions that of the
  * strong and weak cursors if the insertion point is at that index.
  *
- * The position of each cursor is stored as a zero-width rectangle.
+ * The position of each cursor is stored as a zero-width rectangle
+ * with the height of the run extents.
+ *
  * The strong cursor location is the location where characters of the
  * directionality equal to the base direction of the layout are inserted.
  * The weak cursor location is the location where characters of the
  * directionality opposite to the base direction of the layout are inserted.
+ *
+ * The following example shows text with both a strong and a weak cursor.
+ *
+ * <picture>
+ *   <source srcset="split-cursor-dark.png" media="(prefers-color-scheme: dark)">
+ *   <img alt="strong and weak cursors" src="split-cursor-light.png">
+ * </picture>
+ *
+ * The strong cursor has a little arrow pointing to the right, the weak
+ * cursor to the left. Typing a 'c' in this situation will insert the
+ * character after the 'b', and typing another Hebrew character, like 'ג',
+ * will insert it at the end.
  */
 void
 pango_layout_get_cursor_pos (PangoLayout    *layout,