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Make invisible text work a bit better (#66194, patch by Jeroen

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2005-06-13  Matthias Clasen  <mclasen@redhat.com>

	Make invisible text work a bit better (#66194, patch by
	Jeroen Zwartepoorte)

	* gtk/gtk.symbols:
	* gtk/gtktextiter.[hc]: Add function to move by
	visible lines.

	* gtk/gtktextview.c (gtk_text_view_move_cursor_internal):
	Skip invisible text when moving by paragraphs.

	* gtk/gtktextlayout.c (gtk_text_layout_move_iter_visually):
	Skip invisible lines here too.
This commit is contained in:
Matthias Clasen
2005-06-13 05:15:10 +00:00
committed by Matthias Clasen
parent f66144459c
commit 4b14b2d4bd
8 changed files with 237 additions and 10 deletions
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15
ChangeLog
View File

@@ -1,3 +1,18 @@
2005-06-13 Matthias Clasen <mclasen@redhat.com>
Make invisible text work a bit better (#66194, patch by
Jeroen Zwartepoorte)
* gtk/gtk.symbols:
* gtk/gtktextiter.[hc]: Add function to move by
visible lines.
* gtk/gtktextview.c (gtk_text_view_move_cursor_internal):
Skip invisible text when moving by paragraphs.
* gtk/gtktextlayout.c (gtk_text_layout_move_iter_visually):
Skip invisible lines here too.
2005-06-12 Matthias Clasen <mclasen@redhat.com>
* gtk/gtkselection.c (gtk_target_list_add_image_targets):

15
ChangeLog.pre-2-10
View File

@@ -1,3 +1,18 @@
2005-06-13 Matthias Clasen <mclasen@redhat.com>
Make invisible text work a bit better (#66194, patch by
Jeroen Zwartepoorte)
* gtk/gtk.symbols:
* gtk/gtktextiter.[hc]: Add function to move by
visible lines.
* gtk/gtktextview.c (gtk_text_view_move_cursor_internal):
Skip invisible text when moving by paragraphs.
* gtk/gtktextlayout.c (gtk_text_layout_move_iter_visually):
Skip invisible lines here too.
2005-06-12 Matthias Clasen <mclasen@redhat.com>
* gtk/gtkselection.c (gtk_target_list_add_image_targets):

15
ChangeLog.pre-2-8
View File

@@ -1,3 +1,18 @@
2005-06-13 Matthias Clasen <mclasen@redhat.com>
Make invisible text work a bit better (#66194, patch by
Jeroen Zwartepoorte)
* gtk/gtk.symbols:
* gtk/gtktextiter.[hc]: Add function to move by
visible lines.
* gtk/gtktextview.c (gtk_text_view_move_cursor_internal):
Skip invisible text when moving by paragraphs.
* gtk/gtktextlayout.c (gtk_text_layout_move_iter_visually):
Skip invisible lines here too.
2005-06-12 Matthias Clasen <mclasen@redhat.com>
* gtk/gtkselection.c (gtk_target_list_add_image_targets):

4
gtk/gtk.symbols
View File

@@ -2890,6 +2890,8 @@ gtk_text_iter_backward_sentence_starts
gtk_text_iter_backward_to_tag_toggle
gtk_text_iter_backward_visible_cursor_position
gtk_text_iter_backward_visible_cursor_positions
gtk_text_iter_backward_visible_line
gtk_text_iter_backward_visible_lines
gtk_text_iter_backward_visible_word_start
gtk_text_iter_backward_visible_word_starts
gtk_text_iter_backward_word_start
@@ -2919,6 +2921,8 @@ gtk_text_iter_forward_to_line_end
gtk_text_iter_forward_to_tag_toggle
gtk_text_iter_forward_visible_cursor_position
gtk_text_iter_forward_visible_cursor_positions
gtk_text_iter_forward_visible_line
gtk_text_iter_forward_visible_lines
gtk_text_iter_forward_visible_word_end
gtk_text_iter_forward_visible_word_ends
gtk_text_iter_forward_word_end

156
gtk/gtktextiter.c
View File

@@ -2719,6 +2719,162 @@ gtk_text_iter_backward_lines (GtkTextIter *iter, gint count)
}
}
/**
* gtk_text_iter_forward_visible_line:
* @iter: an iterator
*
* Moves @iter to the start of the next visible line. Returns %TRUE if there
* was a next line to move to, and %FALSE if @iter was simply moved to
* the end of the buffer and is now not dereferenceable, or if @iter was
* already at the end of the buffer.
*
* Return value: whether @iter can be dereferenced
*
* Since: 2.8
**/
gboolean
gtk_text_iter_forward_visible_line (GtkTextIter *iter)
{
while (gtk_text_iter_forward_line (iter))
{
if (!_gtk_text_btree_char_is_invisible (iter))
return TRUE;
else
{
do
{
if (!gtk_text_iter_forward_char (iter))
return FALSE;
if (!_gtk_text_btree_char_is_invisible (iter))
return TRUE;
}
while (!gtk_text_iter_ends_line (iter));
}
}
return FALSE;
}
/**
* gtk_text_iter_backward_visible_line:
* @iter: an iterator
*
* Moves @iter to the start of the previous visible line. Returns %TRUE if
* @iter could be moved; i.e. if @iter was at character offset 0, this
* function returns %FALSE. Therefore if @iter was already on line 0,
* but not at the start of the line, @iter is snapped to the start of
* the line and the function returns %TRUE. (Note that this implies that
* in a loop calling this function, the line number may not change on
* every iteration, if your first iteration is on line 0.)
*
* Return value: whether @iter moved
*
* Since: 2.8
**/
gboolean
gtk_text_iter_backward_visible_line (GtkTextIter *iter)
{
while (gtk_text_iter_backward_line (iter))
{
if (!_gtk_text_btree_char_is_invisible (iter))
return TRUE;
else
{
do
{
if (!gtk_text_iter_backward_char (iter))
return FALSE;
if (!_gtk_text_btree_char_is_invisible (iter))
return TRUE;
}
while (!gtk_text_iter_starts_line (iter));
}
}
return FALSE;
}
/**
* gtk_text_iter_forward_visible_lines:
* @iter: a #GtkTextIter
* @count: number of lines to move forward
*
* Moves @count visible lines forward, if possible (if @count would move
* past the start or end of the buffer, moves to the start or end of
* the buffer). The return value indicates whether the iterator moved
* onto a dereferenceable position; if the iterator didn't move, or
* moved onto the end iterator, then %FALSE is returned. If @count is 0,
* the function does nothing and returns %FALSE. If @count is negative,
* moves backward by 0 - @count lines.
*
* Return value: whether @iter moved and is dereferenceable
*
* Since: 2.8
**/
gboolean
gtk_text_iter_forward_visible_lines (GtkTextIter *iter,
gint count)
{
FIX_OVERFLOWS (count);
if (count < 0)
return gtk_text_iter_backward_visible_lines (iter, 0 - count);
else if (count == 0)
return FALSE;
else if (count == 1)
{
check_invariants (iter);
return gtk_text_iter_forward_visible_line (iter);
}
else
{
while (gtk_text_iter_forward_visible_line (iter) && count > 0)
count--;
return count == 0;
}
}
/**
* gtk_text_iter_backward_visible_lines:
* @iter: a #GtkTextIter
* @count: number of lines to move backward
*
* Moves @count visible lines backward, if possible (if @count would move
* past the start or end of the buffer, moves to the start or end of
* the buffer). The return value indicates whether the iterator moved
* onto a dereferenceable position; if the iterator didn't move, or
* moved onto the end iterator, then %FALSE is returned. If @count is 0,
* the function does nothing and returns %FALSE. If @count is negative,
* moves forward by 0 - @count lines.
*
* Return value: whether @iter moved and is dereferenceable
*
* Since: 2.8
**/
gboolean
gtk_text_iter_backward_visible_lines (GtkTextIter *iter,
gint count)
{
FIX_OVERFLOWS (count);
if (count < 0)
return gtk_text_iter_forward_visible_lines (iter, 0 - count);
else if (count == 0)
return FALSE;
else if (count == 1)
{
return gtk_text_iter_backward_visible_line (iter);
}
else
{
while (gtk_text_iter_backward_visible_line (iter) && count > 0)
count--;
return count == 0;
}
}
typedef gboolean (* FindLogAttrFunc) (const PangoLogAttr *attrs,
gint offset,
gint min_offset,

7
gtk/gtktextiter.h
View File

@@ -188,6 +188,13 @@ gboolean gtk_text_iter_forward_word_ends (GtkTextIter *iter,
gint count);
gboolean gtk_text_iter_backward_word_starts (GtkTextIter *iter,
gint count);
gboolean gtk_text_iter_forward_visible_line (GtkTextIter *iter);
gboolean gtk_text_iter_backward_visible_line (GtkTextIter *iter);
gboolean gtk_text_iter_forward_visible_lines (GtkTextIter *iter,
gint count);
gboolean gtk_text_iter_backward_visible_lines (GtkTextIter *iter,
gint count);
gboolean gtk_text_iter_forward_visible_word_end (GtkTextIter *iter);
gboolean gtk_text_iter_backward_visible_word_start (GtkTextIter *iter);

31
gtk/gtktextlayout.c
View File

@@ -2390,8 +2390,8 @@ gtk_text_layout_get_cursor_locations (GtkTextLayout *layout,
index += layout->preedit_cursor - layout->preedit_len;
pango_layout_get_cursor_pos (display->layout, index,
strong_pos ? &pango_strong_pos : NULL,
weak_pos ? &pango_weak_pos : NULL);
strong_pos ? &pango_strong_pos : NULL,
weak_pos ? &pango_weak_pos : NULL);
if (strong_pos)
{
@@ -3117,6 +3117,7 @@ gtk_text_layout_move_iter_visually (GtkTextLayout *layout,
{
GtkTextLineDisplay *display = NULL;
GtkTextIter orig;
GtkTextIter lineiter;
g_return_val_if_fail (layout != NULL, FALSE);
g_return_val_if_fail (iter != NULL, FALSE);
@@ -3174,10 +3175,17 @@ gtk_text_layout_move_iter_visually (GtkTextLayout *layout,
if (new_index < 0 || (new_index == 0 && extra_back))
{
line = _gtk_text_line_previous (line);
do
{
line = _gtk_text_line_previous (line);
if (!line)
goto done;
if (!line)
goto done;
_gtk_text_btree_get_iter_at_line (_gtk_text_buffer_get_btree (layout->buffer),
&lineiter, line, 0);
}
while (totally_invisible_line (layout, line, &lineiter));
gtk_text_layout_free_line_display (layout, display);
display = gtk_text_layout_get_line_display (layout, line, FALSE);
@@ -3185,10 +3193,17 @@ gtk_text_layout_move_iter_visually (GtkTextLayout *layout,
}
else if (new_index > byte_count)
{
line = _gtk_text_line_next_excluding_last (line);
if (!line)
goto done;
do
{
line = _gtk_text_line_next_excluding_last (line);
if (!line)
goto done;
_gtk_text_btree_get_iter_at_line (_gtk_text_buffer_get_btree (layout->buffer),
&lineiter, line, 0);
}
while (totally_invisible_line (layout, line, &lineiter));
gtk_text_layout_free_line_display (layout, display);
display = gtk_text_layout_get_line_display (layout, line, FALSE);
new_index = 0;

4
gtk/gtktextview.c
View File

@@ -4759,7 +4759,7 @@ gtk_text_view_move_cursor_internal (GtkTextView *text_view,
gtk_text_iter_forward_to_line_end (&newplace);
--count;
}
gtk_text_iter_forward_lines (&newplace, count);
gtk_text_iter_forward_visible_lines (&newplace, count);
gtk_text_iter_forward_to_line_end (&newplace);
}
else if (count < 0)
@@ -4769,7 +4769,7 @@ gtk_text_view_move_cursor_internal (GtkTextView *text_view,
gtk_text_iter_set_line_offset (&newplace, 0);
++count;
}
gtk_text_iter_forward_lines (&newplace, count);
gtk_text_iter_forward_visible_lines (&newplace, count);
gtk_text_iter_set_line_offset (&newplace, 0);
}
break;