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Try to match an off toggle here with the matching on toggle if it

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2005-10-11  Matthias Clasen  <mclasen@redhat.com>

	* gtk/gtktextbtree.c (_gtk_text_btree_delete): Try to match an off
	toggle here with the matching on toggle if it immediately follows.
	This is a common case, and handling it here prevents quadratic blowup
	in cleanup_line() below.  (#317125)

	* gtk/gtktextsegment.h:
	* gtk/gtktextsegment.c (_gtk_char_segment_new_from_two_strings): Pass
	the character counts into this function instead of computing them
	again.
This commit is contained in:
Matthias Clasen 2005-10-11 14:39:17 +00:00 committed by Matthias Clasen
parent 8ad0abb867
commit a07a5ecba7
5 changed files with 70 additions and 17 deletions
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12
ChangeLog
View File

@ -1,3 +1,15 @@
2005-10-11 Matthias Clasen <mclasen@redhat.com>
* gtk/gtktextbtree.c (_gtk_text_btree_delete): Try to match an off
toggle here with the matching on toggle if it immediately follows.
This is a common case, and handling it here prevents quadratic blowup
in cleanup_line() below. (#317125)
* gtk/gtktextsegment.h:
* gtk/gtktextsegment.c (_gtk_char_segment_new_from_two_strings): Pass
the character counts into this function instead of computing them
again.
2005-10-10 Tommi Komulainen <tommi.komulainen@iki.fi>
* gtk/gtkfilechooser.h (GtkFileChooserError): Add ALREADY_EXISTS error

12
ChangeLog.pre-2-10
View File

@ -1,3 +1,15 @@
2005-10-11 Matthias Clasen <mclasen@redhat.com>
* gtk/gtktextbtree.c (_gtk_text_btree_delete): Try to match an off
toggle here with the matching on toggle if it immediately follows.
This is a common case, and handling it here prevents quadratic blowup
in cleanup_line() below. (#317125)
* gtk/gtktextsegment.h:
* gtk/gtktextsegment.c (_gtk_char_segment_new_from_two_strings): Pass
the character counts into this function instead of computing them
again.
2005-10-10 Tommi Komulainen <tommi.komulainen@iki.fi>
* gtk/gtkfilechooser.h (GtkFileChooserError): Add ALREADY_EXISTS error

39
gtk/gtktextbtree.c
View File

@ -1,5 +1,5 @@
/*
* gtktextbtree.c --
* Gtktextbtree.c --
*
* This file contains code that manages the B-tree representation
* of text for the text buffer and implements character and
@ -732,7 +732,7 @@ _gtk_text_btree_delete (GtkTextIter *start,
* of the deletion range. */
GtkTextLineSegment *last_seg; /* The segment just after the end
* of the deletion range. */
GtkTextLineSegment *seg, *next;
GtkTextLineSegment *seg, *next, *next2;
GtkTextLine *curline;
GtkTextBTreeNode *curnode, *node;
GtkTextBTree *tree;
@ -885,12 +885,29 @@ _gtk_text_btree_delete (GtkTextIter *start,
seg->next = start_line->segments;
start_line->segments = seg;
}
else
{
else if (prev_seg->next &&
seg->type == &gtk_text_toggle_off_type &&
prev_seg->next->type == &gtk_text_toggle_on_type &&
seg->body.toggle.info == prev_seg->next->body.toggle.info)
{
/* Try to match an off toggle with the matching on toggle
* if it immediately follows. This is a common case, and
* handling it here prevents quadratic blowup in
* cleanup_line() below. See bug 317125.
*/
next2 = prev_seg->next->next;
g_free ((char *)prev_seg->next);
prev_seg->next = next2;
g_free ((char *)seg);
seg = NULL;
}
else
{
seg->next = prev_seg->next;
prev_seg->next = seg;
}
if (seg->type->leftGravity)
if (seg && seg->type->leftGravity)
{
prev_seg = seg;
}
@ -4718,16 +4735,20 @@ cleanup_line (GtkTextLine *line)
while (changed)
{
changed = FALSE;
for (prev_p = &line->segments, seg = *prev_p;
seg != NULL;
prev_p = &(*prev_p)->next, seg = *prev_p)
prev_p = &line->segments;
for (seg = *prev_p; seg != NULL; seg = *prev_p)
{
if (seg->type->cleanupFunc != NULL)
{
*prev_p = (*seg->type->cleanupFunc)(seg, line);
if (seg != *prev_p)
changed = TRUE;
{
changed = TRUE;
continue;
}
}
prev_p = &(*prev_p)->next;
}
}
}

20
gtk/gtktextsegment.c
View File

@ -211,8 +211,12 @@ _gtk_char_segment_new (const gchar *text, guint len)
}
GtkTextLineSegment*
_gtk_char_segment_new_from_two_strings (const gchar *text1, guint len1,
const gchar *text2, guint len2)
_gtk_char_segment_new_from_two_strings (const gchar *text1,
guint len1,
guint chars1,
const gchar *text2,
guint len2,
guint chars2)
{
GtkTextLineSegment *seg;
@ -227,9 +231,7 @@ _gtk_char_segment_new_from_two_strings (const gchar *text1, guint len1,
memcpy (seg->body.chars + len1, text2, len2);
seg->body.chars[len1+len2] = '\0';
/* In principle this function could probably take chars1 and chars2
as args, since it's typically used to merge two char segments */
seg->char_count = g_utf8_strlen (seg->body.chars, seg->byte_count);
seg->char_count = chars1 + chars2;
if (gtk_debug_flags & GTK_DEBUG_TEXT)
char_segment_self_check (seg);
@ -326,8 +328,12 @@ char_segment_cleanup_func (segPtr, line)
}
newPtr =
_gtk_char_segment_new_from_two_strings (segPtr->body.chars, segPtr->byte_count,
segPtr2->body.chars, segPtr2->byte_count);
_gtk_char_segment_new_from_two_strings (segPtr->body.chars,
segPtr->byte_count,
segPtr->char_count,
segPtr2->body.chars,
segPtr2->byte_count,
segPtr2->char_count);
newPtr->next = segPtr2->next;

4
gtk/gtktextsegment.h
View File

@ -158,8 +158,10 @@ GtkTextLineSegment *_gtk_char_segment_new (const gchar *text
guint len);
GtkTextLineSegment *_gtk_char_segment_new_from_two_strings (const gchar *text1,
guint len1,
guint chars1,
const gchar *text2,
guint len2);
guint len2,
guint chars2);
GtkTextLineSegment *_gtk_toggle_segment_new (GtkTextTagInfo *info,
gboolean on);