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pango
Commit dec6c086 authored by Timm Bäder's avatar Timm Bäder 🤔
3 Browse files
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attrs: Save iterator stack in a GPtrArray 

One less linked list.
parent 7abe91c2
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Inline Side-by-side
Showing with 71 additions and 59 deletions
pango/pango-attributes-private.h
View file @ dec6c086
......@@ -23,7 +23,7 @@
struct _PangoAttrIterator
{
GSList *next_attribute;
GList *attribute_stack;
GPtrArray *attribute_stack;
guint start_index;
guint end_index;
};
......
pango/pango-attributes.c
View file @ dec6c086
......@@ -2073,43 +2073,46 @@ pango_attr_iterator_range (PangoAttrIterator *iterator,
gboolean
pango_attr_iterator_next (PangoAttrIterator *iterator)
{
GList *tmp_list;
guint i;
g_return_val_if_fail (iterator != NULL, FALSE);
if (!iterator->next_attribute && !iterator->attribute_stack)
if (!iterator->next_attribute &&
(!iterator->attribute_stack || iterator->attribute_stack->len == 0))
return FALSE;
iterator->start_index = iterator->end_index;
iterator->end_index = G_MAXUINT;
tmp_list = iterator->attribute_stack;
while (tmp_list)
if (iterator->attribute_stack)
{
GList *next = tmp_list->next;
PangoAttribute *attr = tmp_list->data;
if (attr->end_index == iterator->start_index)
{
iterator->attribute_stack = g_list_remove_link (iterator->attribute_stack, tmp_list);
g_list_free_1 (tmp_list);
}
else
{
iterator->end_index = MIN (iterator->end_index, attr->end_index);
}
for (i = 0; i < iterator->attribute_stack->len; i++)
{
const PangoAttribute *attr = g_ptr_array_index (iterator->attribute_stack, i);
tmp_list = next;
if (attr->end_index == iterator->start_index)
{
g_ptr_array_remove_index (iterator->attribute_stack, i); /* Can't use index_fast :( */;
i--;
}
else
{
iterator->end_index = MIN (iterator->end_index, attr->end_index);
}
}
}
while (iterator->next_attribute &&
((PangoAttribute *)iterator->next_attribute->data)->start_index == iterator->start_index)
((PangoAttribute *)iterator->next_attribute->data)->start_index == iterator->start_index)
{
if (((PangoAttribute *)iterator->next_attribute->data)->end_index > iterator->start_index)
{
iterator->attribute_stack = g_list_prepend (iterator->attribute_stack, iterator->next_attribute->data);
iterator->end_index = MIN (iterator->end_index, ((PangoAttribute *)iterator->next_attribute->data)->end_index);
}
{
if (G_UNLIKELY (!iterator->attribute_stack))
iterator->attribute_stack = g_ptr_array_new ();
g_ptr_array_add (iterator->attribute_stack, iterator->next_attribute->data);
iterator->end_index = MIN (iterator->end_index, ((PangoAttribute *)iterator->next_attribute->data)->end_index);
}
iterator->next_attribute = iterator->next_attribute->next;
}
......@@ -2140,7 +2143,10 @@ pango_attr_iterator_copy (PangoAttrIterator *iterator)
*copy = *iterator;
copy->attribute_stack = g_list_copy (iterator->attribute_stack);
if (iterator->attribute_stack)
copy->attribute_stack = g_ptr_array_copy (iterator->attribute_stack, NULL, NULL);
else
copy->attribute_stack = NULL;
return copy;
}
......@@ -2148,7 +2154,8 @@ pango_attr_iterator_copy (PangoAttrIterator *iterator)
void
_pango_attr_iterator_destroy (PangoAttrIterator *iterator)
{
g_list_free (iterator->attribute_stack);
if (iterator->attribute_stack)
g_ptr_array_free (iterator->attribute_stack, TRUE);
}
/**
......@@ -2184,19 +2191,19 @@ PangoAttribute *
pango_attr_iterator_get (PangoAttrIterator *iterator,
PangoAttrType type)
{
GList *tmp_list;
guint i;
g_return_val_if_fail (iterator != NULL, NULL);
tmp_list = iterator->attribute_stack;
while (tmp_list)
if (!iterator->attribute_stack)
return NULL;
for (i = 0; i < iterator->attribute_stack->len; i++)
{
PangoAttribute *attr = tmp_list->data;
PangoAttribute *attr = g_ptr_array_index (iterator->attribute_stack, i);
if (attr->klass->type == type)
return attr;
tmp_list = tmp_list->next;
return attr;
}
return NULL;
......@@ -2228,13 +2235,11 @@ pango_attr_iterator_get_font (PangoAttrIterator *iterator,
PangoLanguage **language,
GSList **extra_attrs)
{
GList *tmp_list1;
GSList *tmp_list2;
PangoFontMask mask = 0;
gboolean have_language = FALSE;
gdouble scale = 0;
gboolean have_scale = FALSE;
int i;
g_return_if_fail (iterator != NULL);
g_return_if_fail (desc != NULL);
......@@ -2245,11 +2250,12 @@ pango_attr_iterator_get_font (PangoAttrIterator *iterator,
if (extra_attrs)
*extra_attrs = NULL;
tmp_list1 = iterator->attribute_stack;
while (tmp_list1)
if (!iterator->attribute_stack)
return;
for (i = iterator->attribute_stack->len - 1; i >= 0; i--)
{
PangoAttribute *attr = tmp_list1->data;
tmp_list1 = tmp_list1->next;
const PangoAttribute *attr = g_ptr_array_index (iterator->attribute_stack, i);
switch ((int) attr->klass->type)
{
......@@ -2333,22 +2339,24 @@ pango_attr_iterator_get_font (PangoAttrIterator *iterator,
{
gboolean found = FALSE;
tmp_list2 = *extra_attrs;
/* Hack: special-case FONT_FEATURES. We don't want them to
* override each other, so we never merge them. This should
* be fixed when we implement attr-merging. */
if (attr->klass->type != PANGO_ATTR_FONT_FEATURES)
while (tmp_list2)
{
PangoAttribute *old_attr = tmp_list2->data;
if (attr->klass->type == old_attr->klass->type)
{
found = TRUE;
break;
}
tmp_list2 = tmp_list2->next;
}
{
GSList *tmp_list = *extra_attrs;
while (tmp_list)
{
PangoAttribute *old_attr = tmp_list->data;
if (attr->klass->type == old_attr->klass->type)
{
found = TRUE;
break;
}
tmp_list = tmp_list->next;
}
}
if (!found)
*extra_attrs = g_slist_prepend (*extra_attrs, pango_attribute_copy (attr));
......@@ -2453,22 +2461,26 @@ GSList *
pango_attr_iterator_get_attrs (PangoAttrIterator *iterator)
{
GSList *attrs = NULL;
GList *tmp_list;
int i;
if (!iterator->attribute_stack ||
iterator->attribute_stack->len == 0)
return NULL;
for (tmp_list = iterator->attribute_stack; tmp_list; tmp_list = tmp_list->next)
for (i = iterator->attribute_stack->len - 1; i >= 0; i--)
{
PangoAttribute *attr = tmp_list->data;
PangoAttribute *attr = g_ptr_array_index (iterator->attribute_stack, i);
GSList *tmp_list2;
gboolean found = FALSE;
for (tmp_list2 = attrs; tmp_list2; tmp_list2 = tmp_list2->next)
{
PangoAttribute *old_attr = tmp_list2->data;
if (attr->klass->type == old_attr->klass->type)
{
found = TRUE;
break;
}
if (attr->klass->type == old_attr->klass->type)
{
found = TRUE;
break;
}
}
if (!found)
......
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