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textchildanchor: allow to specify replacement character

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Georg Vienna 2021-12-03 16:02:48 +00:00 committed by Matthias Clasen
parent e3a1a2e0c6
commit c517e945de
7 changed files with 150 additions and 19 deletions
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10
demos/gtk-demo/hypertext.c
View File

@ -7,7 +7,8 @@
* shows.
*
* We also demonstrate adding other things to a text view, such as
* clickable icons.
* clickable icons and widgets which can also replace a character
* (try copying the ghost text).
*/
#include <gtk/gtk.h>
@ -113,7 +114,12 @@ show_page (GtkTextView *text_view,
gtk_level_bar_set_value (GTK_LEVEL_BAR (child), 50);
gtk_widget_set_size_request (child, 100, -1);
gtk_text_view_add_child_at_anchor (text_view, child, anchor);
gtk_text_buffer_insert (buffer, &iter, ".", -1);
gtk_text_buffer_insert (buffer, &iter, " and labels with ", -1);
anchor = gtk_text_child_anchor_new_with_replacement ("👻");
gtk_text_buffer_insert_child_anchor (buffer, &iter, anchor);
child = gtk_label_new ("ghost");
gtk_text_view_add_child_at_anchor (text_view, child, anchor);
gtk_text_buffer_insert (buffer, &iter, " text.", -1);
}
else if (page == 2)
{

35
gtk/gtktextbtree.c
View File

@ -2362,8 +2362,7 @@ copy_segment (GString *string,
/* printf (" :%s\n", string->str); */
}
else if (seg->type == &gtk_text_paintable_type ||
seg->type == &gtk_text_child_type)
else if (seg->type == &gtk_text_paintable_type)
{
gboolean copy = TRUE;
@ -2382,7 +2381,27 @@ copy_segment (GString *string,
g_string_append_len (string,
_gtk_text_unknown_char_utf8,
GTK_TEXT_UNKNOWN_CHAR_UTF8_LEN);
}
}
else if (seg->type == &gtk_text_child_type)
{
gboolean copy = TRUE;
if (!include_nonchars &&
g_strcmp0 (_gtk_text_unknown_char_utf8, seg->body.child.obj->chars) == 0)
{
copy = FALSE;
}
else if (!include_hidden &&
_gtk_text_btree_char_is_invisible (start))
{
copy = FALSE;
}
if (copy)
{
g_string_append_len (string,
seg->body.child.obj->chars,
seg->byte_count);
}
}
}
@ -7121,6 +7140,12 @@ _gtk_text_btree_spew_line_short (GtkTextLine *line, int indent)
printf ("%s chars '%s'...\n", spaces, str);
g_free (str);
}
else if (seg->type == &gtk_text_child_type)
{
char *str = g_strndup (seg->body.child.obj->chars, seg->byte_count);
printf ("%s child '%s'...\n", spaces, str);
g_free (str);
}
else if (seg->type == &gtk_text_right_mark_type)
{
printf ("%s right mark '%s' visible: %d\n",
@ -7223,6 +7248,12 @@ _gtk_text_btree_spew_segment (GtkTextBTree* tree, GtkTextLineSegment * seg)
printf (" '%s'\n", str);
g_free (str);
}
else if (seg->type == &gtk_text_child_type)
{
char *str = g_strndup (seg->body.child.obj->chars, seg->byte_count);
printf (" '%s'\n", str);
g_free (str);
}
else if (seg->type == &gtk_text_right_mark_type)
{
printf (" right mark '%s' visible: %d not_deleteable: %d\n",

33
gtk/gtktextchild.c
View File

@ -267,9 +267,6 @@ child_segment_check_func (GtkTextLineSegment *seg,
if (seg->next == NULL)
g_error ("child segment is the last segment in a line");
if (seg->byte_count != GTK_TEXT_UNKNOWN_CHAR_UTF8_LEN)
g_error ("child segment has byte count of %d", seg->byte_count);
if (seg->char_count != 1)
g_error ("child segment has char count of %d", seg->char_count);
}
@ -301,11 +298,8 @@ _gtk_widget_segment_new (GtkTextChildAnchor *anchor)
seg->next = NULL;
/* We convert to the 0xFFFC "unknown character",
* a 3-byte sequence in UTF-8.
*/
seg->byte_count = GTK_TEXT_UNKNOWN_CHAR_UTF8_LEN;
seg->char_count = 1;
seg->byte_count = strlen (anchor->chars);
seg->char_count = g_utf8_strlen (anchor->chars, seg->byte_count);
seg->body.child.obj = anchor;
seg->body.child.obj->segment = seg;
@ -410,7 +404,28 @@ gtk_text_child_anchor_class_init (GtkTextChildAnchorClass *klass)
GtkTextChildAnchor*
gtk_text_child_anchor_new (void)
{
return g_object_new (GTK_TYPE_TEXT_CHILD_ANCHOR, NULL);
return gtk_text_child_anchor_new_with_replacement (_gtk_text_unknown_char_utf8);
}
/**
* gtk_text_child_anchor_new_with_replacement:
*
* Creates a new `GtkTextChildAnchor` with the given replacement character.
*
* Usually you would then insert it into a `GtkTextBuffer` with
* [method@Gtk.TextBuffer.insert_child_anchor].
*
* Returns: a new `GtkTextChildAnchor`
**/
GtkTextChildAnchor *
gtk_text_child_anchor_new_with_replacement (const char *replacement_character)
{
/* only a single character can be set as replacement */
g_return_val_if_fail (g_utf8_strlen (replacement_character, -1) == 1, NULL);
GtkTextChildAnchor *anchor = g_object_new (GTK_TYPE_TEXT_CHILD_ANCHOR, NULL);
anchor->chars = g_strdup (replacement_character);
return anchor;
}
static void

14
gtk/gtktextchild.h
View File

@ -60,6 +60,7 @@ struct _GtkTextChildAnchor
/*< private >*/
gpointer segment;
char *chars; /* replacement character */
};
struct _GtkTextChildAnchorClass
@ -74,16 +75,19 @@ struct _GtkTextChildAnchorClass
};
GDK_AVAILABLE_IN_ALL
GType gtk_text_child_anchor_get_type (void) G_GNUC_CONST;
GType gtk_text_child_anchor_get_type (void) G_GNUC_CONST;
GDK_AVAILABLE_IN_ALL
GtkTextChildAnchor* gtk_text_child_anchor_new (void);
GtkTextChildAnchor *gtk_text_child_anchor_new (void);
GDK_AVAILABLE_IN_4_6
GtkTextChildAnchor *gtk_text_child_anchor_new_with_replacement (const char *character);
GDK_AVAILABLE_IN_ALL
GtkWidget ** gtk_text_child_anchor_get_widgets (GtkTextChildAnchor *anchor,
guint *out_len);
GtkWidget **gtk_text_child_anchor_get_widgets (GtkTextChildAnchor *anchor,
guint *out_len);
GDK_AVAILABLE_IN_ALL
gboolean gtk_text_child_anchor_get_deleted (GtkTextChildAnchor *anchor);
gboolean gtk_text_child_anchor_get_deleted (GtkTextChildAnchor *anchor);
G_END_DECLS

4
gtk/gtktextiter.c
View File

@ -892,6 +892,10 @@ gtk_text_iter_get_char (const GtkTextIter *iter)
return g_utf8_get_char (real->segment->body.chars +
real->segment_byte_offset);
}
else if (real->segment->type == &gtk_text_child_type)
{
return g_utf8_get_char (real->segment->body.child.obj->chars);
}
else
{
/* Unicode "unknown character" 0xFFFC */

2
gtk/gtktextlayout.c
View File

@ -2470,7 +2470,7 @@ gtk_text_layout_create_display (GtkTextLayout *layout,
size_only, FALSE);
add_child_attrs (layout, display, style,
seg, attrs, layout_byte_offset);
memcpy (text + layout_byte_offset, _gtk_text_unknown_char_utf8,
memcpy (text + layout_byte_offset, seg->body.child.obj->chars,
seg->byte_count);
layout_byte_offset += seg->byte_count;
buffer_byte_offset += seg->byte_count;

71
testsuite/gtk/textbuffer.c
View File

@ -1581,6 +1581,75 @@ test_get_iter (void)
g_object_unref (buffer);
}
static void
test_iter_with_anchor (void)
{
GtkTextView *text_view;
GtkTextBuffer *buffer;
GtkTextIter iter;
GtkTextChildAnchor *anchor;
GtkWidget *child;
text_view = GTK_TEXT_VIEW (gtk_text_view_new ());
buffer = gtk_text_view_get_buffer (text_view);
gtk_text_buffer_set_text (buffer, "ab\ncd\r\nef", -1);
g_assert_true (gtk_text_buffer_get_iter_at_line_offset (buffer, &iter, 0, 1));
anchor = gtk_text_buffer_create_child_anchor (buffer, &iter);
child = gtk_label_new ("text");
gtk_text_view_add_child_at_anchor (text_view, child, anchor);
g_object_unref (child);
gtk_text_buffer_get_iter_at_child_anchor (buffer, &iter, anchor);
g_assert_cmpint (gtk_text_iter_get_char (&iter), ==, GTK_TEXT_UNKNOWN_CHAR);
g_assert_true (gtk_text_buffer_get_iter_at_line_offset (buffer, &iter, 1, 1));
/* ß takes 2 bytes in UTF-8 */
anchor = gtk_text_child_anchor_new_with_replacement ("ß");
gtk_text_buffer_insert_child_anchor (buffer, &iter, anchor);
child = gtk_label_new ("text");
gtk_text_view_add_child_at_anchor (text_view, child, anchor);
gtk_text_buffer_get_iter_at_child_anchor (buffer, &iter, anchor);
g_assert_cmpint (gtk_text_iter_get_char (&iter), ==, 223);
g_object_unref (child);
g_object_ref_sink (text_view);
}
static void
test_get_text_with_anchor (void)
{
GtkTextView *text_view;
GtkTextBuffer *buffer;
GtkTextIter iter, start, end;
GtkTextChildAnchor *anchor;
GtkWidget *child;
text_view = GTK_TEXT_VIEW (gtk_text_view_new ());
buffer = gtk_text_view_get_buffer (text_view);
gtk_text_buffer_set_text (buffer, "ab\ncd\r\nef", -1);
g_assert_true (gtk_text_buffer_get_iter_at_line_offset (buffer, &iter, 0, 1));
anchor = gtk_text_buffer_create_child_anchor (buffer, &iter);
child = gtk_label_new ("text");
gtk_text_view_add_child_at_anchor (text_view, child, anchor);
g_object_unref (child);
g_assert_true (gtk_text_buffer_get_iter_at_line_offset (buffer, &iter, 1, 1));
/* ß takes 2 bytes in UTF-8 */
anchor = gtk_text_child_anchor_new_with_replacement ("ß");
gtk_text_buffer_insert_child_anchor (buffer, &iter, anchor);
child = gtk_label_new ("text");
gtk_text_view_add_child_at_anchor (text_view, child, anchor);
gtk_text_buffer_get_bounds (buffer, &start, &end);
g_assert_cmpstr (gtk_text_buffer_get_text (buffer, &start, &end, FALSE), ==, "ab\ncßd\r\nef");
g_object_unref (child);
g_object_ref_sink (text_view);
}
/* Check that basic undo works */
static void
test_undo0 (void)
@ -1768,6 +1837,8 @@ main (int argc, char** argv)
g_test_add_func ("/TextBuffer/Tag", test_tag);
g_test_add_func ("/TextBuffer/Clipboard", test_clipboard);
g_test_add_func ("/TextBuffer/Get iter", test_get_iter);
g_test_add_func ("/TextBuffer/Iter with anchor", test_iter_with_anchor);
g_test_add_func ("/TextBuffer/Get text with anchor", test_get_text_with_anchor);
g_test_add_func ("/TextBuffer/Undo 0", test_undo0);
g_test_add_func ("/TextBuffer/Undo 1", test_undo1);
g_test_add_func ("/TextBuffer/Undo 2", test_undo2);