Memory management functions for PangoItem.

Mon Mar 13 10:54:48 2000  Owen Taylor  <otaylor@redhat.com>

	* pango/pango-item.[ch]: Memory management functions for PangoItem.

	* pango/*.[ch]: Random constification.

	* pango/pangox.c pango/pango-layout.c pango/pango-context.c:
	Add an extra_attrs field to PangoItem. Use this to handle underlining
	for PangoLayout.

	* examples/viewer.c (reload_font): Make paragraphs global
	to save the complexity of passing it around all over the place.

	* pango/pango-layout.[ch] (pango_layout_context_changed): Add
	a function to reset the layout on changes to the layout's
	context.

	* pango/pangox.c (pango_x_make_matching_xlfd): Prefer bitmap
	to scaleable if the discrepancy is < 1 pixel. (Probably not
	the ideal criterion.)

	* pango/pangox.c (pango_x_font_map_for_display): Fix resolution
	computation error.

	* pango/pango-layout.c (pango_layout_check_lines): Handle
	text with embedded newlines.

	* pango/pangox.c (pango_x_render_layout): Fix y to refer
	to the top of the layout, not the baseline of the first
	line.

	* pango/pango-layout.c (process_item): Don't wrap if width is
	set to -1.

	* Makefile.am configure.in **/*.[ch]: move libpango/ directory
	and fix all headers to install under include/pango/

1 files changed, 90 insertions, 0 deletions

diff --git a/pango/pango-item.c b/pango/pango-item.c
new file mode 100644
index 00000000..826552f8
--- /dev/null
+++ b/pango/pango-item.c
@@ -0,0 +1,90 @@
+/* Pango
+ * pango-item.c: Single run handling
+ *
+ * Copyright (C) 2000 Red Hat Software
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#include <pango-attributes.h>
+#include <pango-item.h>
+
+/**
+ * pango_item_new:
+ * 
+ * Creates a new #PangoItem structure initialized to default values.
+ * 
+ * Return value: the new #PangoItem
+ **/
+PangoItem *
+pango_item_new (void)
+{
+  PangoItem *result = g_new0 (PangoItem, 1);
+
+  return result;
+}
+
+/**
+ * pango_item_copy:
+ * @item: a #PangoItem
+ * 
+ * Copy an existing #PangoItem structure.
+ * 
+ * Return value: the new #PangoItem
+ **/
+PangoItem *
+pango_item_copy (PangoItem *item)
+{
+  GSList *extra_attrs, *tmp_list;
+  PangoItem *result = g_new (PangoItem, 1);
+
+  result->offset = item->offset;
+  result->length = item->length;
+  result->num_chars = item->num_chars;
+
+  extra_attrs = NULL;
+  tmp_list = item->extra_attrs;
+  while (tmp_list)
+    {
+      extra_attrs = g_slist_prepend (extra_attrs, pango_attribute_copy (tmp_list->data));
+      tmp_list = tmp_list->next;
+    }
+
+  result->extra_attrs = g_slist_reverse (extra_attrs);
+	  
+  result->analysis = item->analysis;
+  pango_font_ref (result->analysis.font);
+
+  return result;
+}
+
+/**
+ * pango_item_free:
+ * @item: a #PangoItem
+ * 
+ * Free a #PangoItem and all associated memory.
+ **/
+void
+pango_item_free (PangoItem *item)
+{
+  if (item->extra_attrs)
+    g_slist_foreach (item->extra_attrs, (GFunc)pango_attribute_destroy, NULL);
+  
+  pango_font_unref (item->analysis.font);
+
+  g_free (item);
+}
+