--- /dev/null
+/* GAIL - The GNOME Accessibility Implementation Library
+ * Copyright 2001 Sun Microsystems Inc.
+ *
+ * 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 "config.h"
+
+#include <stdlib.h>
+#include <gtk/gtk.h>
+#include "gailmisc.h"
+
+/* IMPORTANT!!! This source file does NOT contain the implementation
+ * code for AtkUtil - for that code, please see gail/gail.c.
+ */
+
+/**
+ * SECTION:gailmisc
+ * @Short_description: GailMisc is a set of utility functions which may be
+ * useful to implementors of Atk interfaces for custom widgets.
+ * @Title: GailMisc
+ *
+ * GailMisc is a set of utility function which are used in the implemementation
+ * of Atk interfaces for GTK+ widgets. They may be useful to implementors of
+ * Atk interfaces for custom widgets.
+ */
+
+
+/**
+ * gail_misc_get_extents_from_pango_rectangle:
+ * @widget: The widget that contains the PangoLayout, that contains
+ * the PangoRectangle
+ * @char_rect: The #PangoRectangle from which to calculate extents
+ * @x_layout: The x-offset at which the widget displays the
+ * PangoLayout that contains the PangoRectangle, relative to @widget
+ * @y_layout: The y-offset at which the widget displays the
+ * PangoLayout that contains the PangoRectangle, relative to @widget
+ * @x: The x-position of the #PangoRectangle relative to @coords
+ * @y: The y-position of the #PangoRectangle relative to @coords
+ * @width: The width of the #PangoRectangle
+ * @height: The height of the #PangoRectangle
+ * @coords: An #AtkCoordType enumeration
+ *
+ * Gets the extents of @char_rect in device coordinates,
+ * relative to either top-level window or screen coordinates as
+ * specified by @coords.
+ **/
+void
+gail_misc_get_extents_from_pango_rectangle (GtkWidget *widget,
+ PangoRectangle *char_rect,
+ gint x_layout,
+ gint y_layout,
+ gint *x,
+ gint *y,
+ gint *width,
+ gint *height,
+ AtkCoordType coords)
+{
+ gint x_window, y_window, x_toplevel, y_toplevel;
+
+ gail_misc_get_origins (widget, &x_window, &y_window,
+ &x_toplevel, &y_toplevel);
+
+ *x = (char_rect->x / PANGO_SCALE) + x_layout + x_window;
+ *y = (char_rect->y / PANGO_SCALE) + y_layout + y_window;
+ if (coords == ATK_XY_WINDOW)
+ {
+ *x -= x_toplevel;
+ *y -= y_toplevel;
+ }
+ else if (coords != ATK_XY_SCREEN)
+ {
+ *x = 0;
+ *y = 0;
+ *height = 0;
+ *width = 0;
+ return;
+ }
+ *height = char_rect->height / PANGO_SCALE;
+ *width = char_rect->width / PANGO_SCALE;
+
+ return;
+}
+
+/**
+ * gail_misc_get_index_at_point_in_layout:
+ * @widget: A #GtkWidget
+ * @layout: The #PangoLayout from which to get the index at the
+ * specified point.
+ * @x_layout: The x-offset at which the widget displays the
+ * #PangoLayout, relative to @widget
+ * @y_layout: The y-offset at which the widget displays the
+ * #PangoLayout, relative to @widget
+ * @x: The x-coordinate relative to @coords at which to
+ * calculate the index
+ * @y: The y-coordinate relative to @coords at which to
+ * calculate the index
+ * @coords: An #AtkCoordType enumeration
+ *
+ * Gets the byte offset at the specified @x and @y in a #PangoLayout.
+ *
+ * Returns: the byte offset at the specified @x and @y in a
+ * #PangoLayout
+ **/
+gint
+gail_misc_get_index_at_point_in_layout (GtkWidget *widget,
+ PangoLayout *layout,
+ gint x_layout,
+ gint y_layout,
+ gint x,
+ gint y,
+ AtkCoordType coords)
+{
+ gint index, x_window, y_window, x_toplevel, y_toplevel;
+ gint x_temp, y_temp;
+ gboolean ret;
+
+ gail_misc_get_origins (widget, &x_window, &y_window,
+ &x_toplevel, &y_toplevel);
+ x_temp = x - x_layout - x_window;
+ y_temp = y - y_layout - y_window;
+ if (coords == ATK_XY_WINDOW)
+ {
+ x_temp += x_toplevel;
+ y_temp += y_toplevel;
+ }
+ else if (coords != ATK_XY_SCREEN)
+ return -1;
+
+ ret = pango_layout_xy_to_index (layout,
+ x_temp * PANGO_SCALE,
+ y_temp * PANGO_SCALE,
+ &index, NULL);
+ if (!ret)
+ {
+ if (x_temp < 0 || y_temp < 0)
+ index = 0;
+ else
+ index = -1;
+ }
+ return index;
+}
+
+/**
+ * gail_misc_add_attribute:
+ * @attrib_set: The #AtkAttributeSet to add the attribute to
+ * @attr: The AtkTextAttrribute which identifies the attribute to be added
+ * @value: The attribute value
+ *
+ * Creates an #AtkAttribute from @attr and @value, and adds it
+ * to @attrib_set.
+ *
+ * Returns: A pointer to the new #AtkAttributeSet.
+ **/
+AtkAttributeSet*
+gail_misc_add_attribute (AtkAttributeSet *attrib_set,
+ AtkTextAttribute attr,
+ gchar *value)
+{
+ AtkAttributeSet *return_set;
+ AtkAttribute *at = g_malloc (sizeof (AtkAttribute));
+ at->name = g_strdup (atk_text_attribute_get_name (attr));
+ at->value = value;
+ return_set = g_slist_prepend(attrib_set, at);
+ return return_set;
+}
+
+/**
+ * gail_misc_layout_get_run_attributes:
+ * @attrib_set: The #AtkAttributeSet to add the attribute to
+ * @layout: The PangoLayout from which the attributes will be obtained
+ * @text: The text
+ * @offset: The offset at which the attributes are required
+ * @start_offset: The start offset of the current run
+ * @end_offset: The end offset of the current run
+ *
+ * Adds the attributes for the run starting at offset to the specified
+ * attribute set.
+ *
+ * Returns: A pointer to the #AtkAttributeSet.
+ **/
+AtkAttributeSet*
+gail_misc_layout_get_run_attributes (AtkAttributeSet *attrib_set,
+ PangoLayout *layout,
+ gchar *text,
+ gint offset,
+ gint *start_offset,
+ gint *end_offset)
+{
+ PangoAttrIterator *iter;
+ PangoAttrList *attr;
+ PangoAttrString *pango_string;
+ PangoAttrInt *pango_int;
+ PangoAttrColor *pango_color;
+ PangoAttrLanguage *pango_lang;
+ PangoAttrFloat *pango_float;
+ gint index, start_index, end_index;
+ gboolean is_next = TRUE;
+ gchar *value = NULL;
+ glong len;
+
+ len = g_utf8_strlen (text, -1);
+ /* Grab the attributes of the PangoLayout, if any */
+ if ((attr = pango_layout_get_attributes (layout)) == NULL)
+ {
+ *start_offset = 0;
+ *end_offset = len;
+ return attrib_set;
+ }
+ iter = pango_attr_list_get_iterator (attr);
+ /* Get invariant range offsets */
+ /* If offset out of range, set offset in range */
+ if (offset > len)
+ offset = len;
+ else if (offset < 0)
+ offset = 0;
+
+ index = g_utf8_offset_to_pointer (text, offset) - text;
+ pango_attr_iterator_range (iter, &start_index, &end_index);
+ while (is_next)
+ {
+ if (index >= start_index && index < end_index)
+ {
+ *start_offset = g_utf8_pointer_to_offset (text,
+ text + start_index);
+ if (end_index == G_MAXINT)
+ /* Last iterator */
+ end_index = len;
+
+ *end_offset = g_utf8_pointer_to_offset (text,
+ text + end_index);
+ break;
+ }
+ is_next = pango_attr_iterator_next (iter);
+ pango_attr_iterator_range (iter, &start_index, &end_index);
+ }
+ /* Get attributes */
+ if ((pango_string = (PangoAttrString*) pango_attr_iterator_get (iter,
+ PANGO_ATTR_FAMILY)) != NULL)
+ {
+ value = g_strdup_printf("%s", pango_string->value);
+ attrib_set = gail_misc_add_attribute (attrib_set,
+ ATK_TEXT_ATTR_FAMILY_NAME,
+ value);
+ }
+ if ((pango_int = (PangoAttrInt*) pango_attr_iterator_get (iter,
+ PANGO_ATTR_STYLE)) != NULL)
+ {
+ attrib_set = gail_misc_add_attribute (attrib_set,
+ ATK_TEXT_ATTR_STYLE,
+ g_strdup (atk_text_attribute_get_value (ATK_TEXT_ATTR_STYLE, pango_int->value)));
+ }
+ if ((pango_int = (PangoAttrInt*) pango_attr_iterator_get (iter,
+ PANGO_ATTR_WEIGHT)) != NULL)
+ {
+ value = g_strdup_printf("%i", pango_int->value);
+ attrib_set = gail_misc_add_attribute (attrib_set,
+ ATK_TEXT_ATTR_WEIGHT,
+ value);
+ }
+ if ((pango_int = (PangoAttrInt*) pango_attr_iterator_get (iter,
+ PANGO_ATTR_VARIANT)) != NULL)
+ {
+ attrib_set = gail_misc_add_attribute (attrib_set,
+ ATK_TEXT_ATTR_VARIANT,
+ g_strdup (atk_text_attribute_get_value (ATK_TEXT_ATTR_VARIANT, pango_int->value)));
+ }
+ if ((pango_int = (PangoAttrInt*) pango_attr_iterator_get (iter,
+ PANGO_ATTR_STRETCH)) != NULL)
+ {
+ attrib_set = gail_misc_add_attribute (attrib_set,
+ ATK_TEXT_ATTR_STRETCH,
+ g_strdup (atk_text_attribute_get_value (ATK_TEXT_ATTR_STRETCH, pango_int->value)));
+ }
+ if ((pango_int = (PangoAttrInt*) pango_attr_iterator_get (iter,
+ PANGO_ATTR_SIZE)) != NULL)
+ {
+ value = g_strdup_printf("%i", pango_int->value / PANGO_SCALE);
+ attrib_set = gail_misc_add_attribute (attrib_set,
+ ATK_TEXT_ATTR_SIZE,
+ value);
+ }
+ if ((pango_int = (PangoAttrInt*) pango_attr_iterator_get (iter,
+ PANGO_ATTR_UNDERLINE)) != NULL)
+ {
+ attrib_set = gail_misc_add_attribute (attrib_set,
+ ATK_TEXT_ATTR_UNDERLINE,
+ g_strdup (atk_text_attribute_get_value (ATK_TEXT_ATTR_UNDERLINE, pango_int->value)));
+ }
+ if ((pango_int = (PangoAttrInt*) pango_attr_iterator_get (iter,
+ PANGO_ATTR_STRIKETHROUGH)) != NULL)
+ {
+ attrib_set = gail_misc_add_attribute (attrib_set,
+ ATK_TEXT_ATTR_STRIKETHROUGH,
+ g_strdup (atk_text_attribute_get_value (ATK_TEXT_ATTR_STRIKETHROUGH, pango_int->value)));
+ }
+ if ((pango_int = (PangoAttrInt*) pango_attr_iterator_get (iter,
+ PANGO_ATTR_RISE)) != NULL)
+ {
+ value = g_strdup_printf("%i", pango_int->value);
+ attrib_set = gail_misc_add_attribute (attrib_set,
+ ATK_TEXT_ATTR_RISE,
+ value);
+ }
+ if ((pango_lang = (PangoAttrLanguage*) pango_attr_iterator_get (iter,
+ PANGO_ATTR_LANGUAGE)) != NULL)
+ {
+ value = g_strdup( pango_language_to_string( pango_lang->value));
+ attrib_set = gail_misc_add_attribute (attrib_set,
+ ATK_TEXT_ATTR_LANGUAGE,
+ value);
+ }
+ if ((pango_float = (PangoAttrFloat*) pango_attr_iterator_get (iter,
+ PANGO_ATTR_SCALE)) != NULL)
+ {
+ value = g_strdup_printf("%g", pango_float->value);
+ attrib_set = gail_misc_add_attribute (attrib_set,
+ ATK_TEXT_ATTR_SCALE,
+ value);
+ }
+ if ((pango_color = (PangoAttrColor*) pango_attr_iterator_get (iter,
+ PANGO_ATTR_FOREGROUND)) != NULL)
+ {
+ value = g_strdup_printf ("%u,%u,%u",
+ pango_color->color.red,
+ pango_color->color.green,
+ pango_color->color.blue);
+ attrib_set = gail_misc_add_attribute (attrib_set,
+ ATK_TEXT_ATTR_FG_COLOR,
+ value);
+ }
+ if ((pango_color = (PangoAttrColor*) pango_attr_iterator_get (iter,
+ PANGO_ATTR_BACKGROUND)) != NULL)
+ {
+ value = g_strdup_printf ("%u,%u,%u",
+ pango_color->color.red,
+ pango_color->color.green,
+ pango_color->color.blue);
+ attrib_set = gail_misc_add_attribute (attrib_set,
+ ATK_TEXT_ATTR_BG_COLOR,
+ value);
+ }
+ pango_attr_iterator_destroy (iter);
+ return attrib_set;
+}
+
+/**
+ * gail_misc_get_default_attributes:
+ * @attrib_set: The #AtkAttributeSet to add the attribute to
+ * @layout: The PangoLayout from which the attributes will be obtained
+ * @widget: The GtkWidget for which the default attributes are required.
+ *
+ * Adds the default attributes to the specified attribute set.
+ *
+ * Returns: A pointer to the #AtkAttributeSet.
+ **/
+AtkAttributeSet*
+gail_misc_get_default_attributes (AtkAttributeSet *attrib_set,
+ PangoLayout *layout,
+ GtkWidget *widget)
+{
+ PangoContext *context;
+ GtkStyle *style_value;
+ gint int_value;
+ PangoWrapMode mode;
+
+ attrib_set = gail_misc_add_attribute (attrib_set,
+ ATK_TEXT_ATTR_DIRECTION,
+ g_strdup (atk_text_attribute_get_value (ATK_TEXT_ATTR_DIRECTION,
+ gtk_widget_get_direction (widget))));
+
+ context = pango_layout_get_context (layout);
+ if (context)
+ {
+ PangoLanguage* language;
+ PangoFontDescription* font;
+
+ language = pango_context_get_language (context);
+ if (language)
+ {
+ attrib_set = gail_misc_add_attribute (attrib_set,
+ ATK_TEXT_ATTR_LANGUAGE,
+ g_strdup (pango_language_to_string (language)));
+ }
+ font = pango_context_get_font_description (context);
+ if (font)
+ {
+ attrib_set = gail_misc_add_attribute (attrib_set,
+ ATK_TEXT_ATTR_STYLE,
+ g_strdup (atk_text_attribute_get_value (ATK_TEXT_ATTR_STYLE,
+ pango_font_description_get_style (font))));
+ attrib_set = gail_misc_add_attribute (attrib_set,
+ ATK_TEXT_ATTR_VARIANT,
+ g_strdup (atk_text_attribute_get_value (ATK_TEXT_ATTR_VARIANT,
+ pango_font_description_get_variant (font))));
+ attrib_set = gail_misc_add_attribute (attrib_set,
+ ATK_TEXT_ATTR_STRETCH,
+ g_strdup (atk_text_attribute_get_value (ATK_TEXT_ATTR_STRETCH,
+ pango_font_description_get_stretch (font))));
+ attrib_set = gail_misc_add_attribute (attrib_set,
+ ATK_TEXT_ATTR_FAMILY_NAME,
+ g_strdup (pango_font_description_get_family (font)));
+ attrib_set = gail_misc_add_attribute (attrib_set,
+ ATK_TEXT_ATTR_WEIGHT,
+ g_strdup_printf ("%d",
+ pango_font_description_get_weight (font)));
+ attrib_set = gail_misc_add_attribute (attrib_set,
+ ATK_TEXT_ATTR_SIZE,
+ g_strdup_printf ("%i",
+ pango_font_description_get_size (font) / PANGO_SCALE));
+ }
+ }
+ if (pango_layout_get_justify (layout))
+ {
+ int_value = 3;
+ }
+ else
+ {
+ PangoAlignment align;
+
+ align = pango_layout_get_alignment (layout);
+ if (align == PANGO_ALIGN_LEFT)
+ int_value = 0;
+ else if (align == PANGO_ALIGN_CENTER)
+ int_value = 2;
+ else /* if (align == PANGO_ALIGN_RIGHT) */
+ int_value = 1;
+ }
+ attrib_set = gail_misc_add_attribute (attrib_set,
+ ATK_TEXT_ATTR_JUSTIFICATION,
+ g_strdup (atk_text_attribute_get_value (ATK_TEXT_ATTR_JUSTIFICATION,
+ int_value)));
+ mode = pango_layout_get_wrap (layout);
+ if (mode == PANGO_WRAP_WORD)
+ int_value = 2;
+ else /* if (mode == PANGO_WRAP_CHAR) */
+ int_value = 1;
+ attrib_set = gail_misc_add_attribute (attrib_set,
+ ATK_TEXT_ATTR_WRAP_MODE,
+ g_strdup (atk_text_attribute_get_value (ATK_TEXT_ATTR_WRAP_MODE,
+ int_value)));
+
+ style_value = gtk_widget_get_style (widget);
+ if (style_value)
+ {
+ GdkColor color;
+ gchar *value;
+
+ color = style_value->base[GTK_STATE_NORMAL];
+ value = g_strdup_printf ("%u,%u,%u",
+ color.red, color.green, color.blue);
+ attrib_set = gail_misc_add_attribute (attrib_set,
+ ATK_TEXT_ATTR_BG_COLOR,
+ value);
+ color = style_value->text[GTK_STATE_NORMAL];
+ value = g_strdup_printf ("%u,%u,%u",
+ color.red, color.green, color.blue);
+ attrib_set = gail_misc_add_attribute (attrib_set,
+ ATK_TEXT_ATTR_FG_COLOR,
+ value);
+ }
+ attrib_set = gail_misc_add_attribute (attrib_set,
+ ATK_TEXT_ATTR_FG_STIPPLE,
+ g_strdup (atk_text_attribute_get_value (ATK_TEXT_ATTR_FG_STIPPLE,
+ 0)));
+ attrib_set = gail_misc_add_attribute (attrib_set,
+ ATK_TEXT_ATTR_BG_STIPPLE,
+ g_strdup (atk_text_attribute_get_value (ATK_TEXT_ATTR_BG_STIPPLE,
+ 0)));
+ attrib_set = gail_misc_add_attribute (attrib_set,
+ ATK_TEXT_ATTR_STRIKETHROUGH,
+ g_strdup (atk_text_attribute_get_value (ATK_TEXT_ATTR_STRIKETHROUGH,
+ 0)));
+ attrib_set = gail_misc_add_attribute (attrib_set,
+ ATK_TEXT_ATTR_UNDERLINE,
+ g_strdup (atk_text_attribute_get_value (ATK_TEXT_ATTR_UNDERLINE,
+ 0)));
+ attrib_set = gail_misc_add_attribute (attrib_set,
+ ATK_TEXT_ATTR_RISE,
+ g_strdup_printf ("%i", 0));
+ attrib_set = gail_misc_add_attribute (attrib_set,
+ ATK_TEXT_ATTR_SCALE,
+ g_strdup_printf ("%g", 1.0));
+ attrib_set = gail_misc_add_attribute (attrib_set,
+ ATK_TEXT_ATTR_BG_FULL_HEIGHT,
+ g_strdup_printf ("%i", 0));
+ attrib_set = gail_misc_add_attribute (attrib_set,
+ ATK_TEXT_ATTR_PIXELS_INSIDE_WRAP,
+ g_strdup_printf ("%i", 0));
+ attrib_set = gail_misc_add_attribute (attrib_set,
+ ATK_TEXT_ATTR_PIXELS_BELOW_LINES,
+ g_strdup_printf ("%i", 0));
+ attrib_set = gail_misc_add_attribute (attrib_set,
+ ATK_TEXT_ATTR_PIXELS_ABOVE_LINES,
+ g_strdup_printf ("%i", 0));
+ attrib_set = gail_misc_add_attribute (attrib_set,
+ ATK_TEXT_ATTR_EDITABLE,
+ g_strdup (atk_text_attribute_get_value (ATK_TEXT_ATTR_EDITABLE,
+ 0)));
+ attrib_set = gail_misc_add_attribute (attrib_set,
+ ATK_TEXT_ATTR_INVISIBLE,
+ g_strdup (atk_text_attribute_get_value (ATK_TEXT_ATTR_INVISIBLE,
+ 0)));
+ attrib_set = gail_misc_add_attribute (attrib_set,
+ ATK_TEXT_ATTR_INDENT,
+ g_strdup_printf ("%i", 0));
+ attrib_set = gail_misc_add_attribute (attrib_set,
+ ATK_TEXT_ATTR_RIGHT_MARGIN,
+ g_strdup_printf ("%i", 0));
+ attrib_set = gail_misc_add_attribute (attrib_set,
+ ATK_TEXT_ATTR_LEFT_MARGIN,
+ g_strdup_printf ("%i", 0));
+ return attrib_set;
+}
+
+/**
+ * gail_misc_get_origins:
+ * @widget: a #GtkWidget
+ * @x_window: the x-origin of the widget->window
+ * @y_window: the y-origin of the widget->window
+ * @x_toplevel: the x-origin of the toplevel window for widget->window
+ * @y_toplevel: the y-origin of the toplevel window for widget->window
+ *
+ * Gets the origin of the widget window, and the origin of the
+ * widgets top-level window.
+ **/
+void
+gail_misc_get_origins (GtkWidget *widget,
+ gint *x_window,
+ gint *y_window,
+ gint *x_toplevel,
+ gint *y_toplevel)
+{
+ GdkWindow *window;
+
+ if (GTK_IS_TREE_VIEW (widget))
+ window = gtk_tree_view_get_bin_window (GTK_TREE_VIEW (widget));
+ else
+ window = widget->window;
+ gdk_window_get_origin (window, x_window, y_window);
+ window = gdk_window_get_toplevel (widget->window);
+ gdk_window_get_origin (window, x_toplevel, y_toplevel);
+}
+
+/**
+ * gail_misc_add_to_attr_set:
+ * @attrib_set: An #AtkAttributeSet
+ * @attrs: The #GtkTextAttributes containing the attribute value
+ * @attr: The #AtkTextAttribute to be added
+ *
+ * Gets the value for the AtkTextAttribute from the GtkTextAttributes
+ * and adds it to the AttributeSet.
+ *
+ * Returns: A pointer to the updated #AtkAttributeSet.
+ **/
+AtkAttributeSet*
+gail_misc_add_to_attr_set (AtkAttributeSet *attrib_set,
+ GtkTextAttributes *attrs,
+ AtkTextAttribute attr)
+{
+ gchar *value;
+
+ switch (attr)
+ {
+ case ATK_TEXT_ATTR_LEFT_MARGIN:
+ value = g_strdup_printf ("%i", attrs->left_margin);
+ break;
+ case ATK_TEXT_ATTR_RIGHT_MARGIN:
+ value = g_strdup_printf ("%i", attrs->right_margin);
+ break;
+ case ATK_TEXT_ATTR_INDENT:
+ value = g_strdup_printf ("%i", attrs->indent);
+ break;
+ case ATK_TEXT_ATTR_INVISIBLE:
+ value = g_strdup (atk_text_attribute_get_value (attr, attrs->invisible));
+ break;
+ case ATK_TEXT_ATTR_EDITABLE:
+ value = g_strdup (atk_text_attribute_get_value (attr, attrs->editable));
+ break;
+ case ATK_TEXT_ATTR_PIXELS_ABOVE_LINES:
+ value = g_strdup_printf ("%i", attrs->pixels_above_lines);
+ break;
+ case ATK_TEXT_ATTR_PIXELS_BELOW_LINES:
+ value = g_strdup_printf ("%i", attrs->pixels_below_lines);
+ break;
+ case ATK_TEXT_ATTR_PIXELS_INSIDE_WRAP:
+ value = g_strdup_printf ("%i", attrs->pixels_inside_wrap);
+ break;
+ case ATK_TEXT_ATTR_BG_FULL_HEIGHT:
+ value = g_strdup (atk_text_attribute_get_value (attr, attrs->bg_full_height));
+ break;
+ case ATK_TEXT_ATTR_RISE:
+ value = g_strdup_printf ("%i", attrs->appearance.rise);
+ break;
+ case ATK_TEXT_ATTR_UNDERLINE:
+ value = g_strdup (atk_text_attribute_get_value (attr, attrs->appearance.underline));
+ break;
+ case ATK_TEXT_ATTR_STRIKETHROUGH:
+ value = g_strdup (atk_text_attribute_get_value (attr, attrs->appearance.strikethrough));
+ break;
+ case ATK_TEXT_ATTR_SIZE:
+ value = g_strdup_printf ("%i",
+ pango_font_description_get_size (attrs->font) / PANGO_SCALE);
+ break;
+ case ATK_TEXT_ATTR_SCALE:
+ value = g_strdup_printf ("%g", attrs->font_scale);
+ break;
+ case ATK_TEXT_ATTR_WEIGHT:
+ value = g_strdup_printf ("%d",
+ pango_font_description_get_weight (attrs->font));
+ break;
+ case ATK_TEXT_ATTR_LANGUAGE:
+ value = g_strdup ((gchar *)(attrs->language));
+ break;
+ case ATK_TEXT_ATTR_FAMILY_NAME:
+ value = g_strdup (pango_font_description_get_family (attrs->font));
+ break;
+ case ATK_TEXT_ATTR_BG_COLOR:
+ value = g_strdup_printf ("%u,%u,%u",
+ attrs->appearance.bg_color.red,
+ attrs->appearance.bg_color.green,
+ attrs->appearance.bg_color.blue);
+ break;
+ case ATK_TEXT_ATTR_FG_COLOR:
+ value = g_strdup_printf ("%u,%u,%u",
+ attrs->appearance.fg_color.red,
+ attrs->appearance.fg_color.green,
+ attrs->appearance.fg_color.blue);
+ break;
+ case ATK_TEXT_ATTR_BG_STIPPLE:
+ value = g_strdup (atk_text_attribute_get_value (attr, attrs->appearance.bg_stipple ? 1 : 0));
+ break;
+ case ATK_TEXT_ATTR_FG_STIPPLE:
+ value = g_strdup (atk_text_attribute_get_value (attr, attrs->appearance.fg_stipple ? 1 : 0));
+ break;
+ case ATK_TEXT_ATTR_WRAP_MODE:
+ value = g_strdup (atk_text_attribute_get_value (attr, attrs->wrap_mode));
+ break;
+ case ATK_TEXT_ATTR_DIRECTION:
+ value = g_strdup (atk_text_attribute_get_value (attr, attrs->direction));
+ break;
+ case ATK_TEXT_ATTR_JUSTIFICATION:
+ value = g_strdup (atk_text_attribute_get_value (attr, attrs->justification));
+ break;
+ case ATK_TEXT_ATTR_STRETCH:
+ value = g_strdup (atk_text_attribute_get_value (attr,
+ pango_font_description_get_stretch (attrs->font)));
+ break;
+ case ATK_TEXT_ATTR_VARIANT:
+ value = g_strdup (atk_text_attribute_get_value (attr,
+ pango_font_description_get_variant (attrs->font)));
+ break;
+ case ATK_TEXT_ATTR_STYLE:
+ value = g_strdup (atk_text_attribute_get_value (attr,
+ pango_font_description_get_style (attrs->font)));
+ break;
+ default:
+ value = NULL;
+ break;
+ }
+ return gail_misc_add_attribute (attrib_set, attr, value);
+}
+
+/**
+ * gail_misc_buffer_get_run_attributes:
+ * @buffer: The #GtkTextBuffer for which the attributes will be obtained
+ * @offset: The offset at which the attributes are required
+ * @start_offset: The start offset of the current run
+ * @end_offset: The end offset of the current run
+ *
+ * Creates an AtkAttributeSet which contains the attributes for the
+ * run starting at offset.
+ *
+ * Returns: A pointer to the #AtkAttributeSet.
+ **/
+AtkAttributeSet*
+gail_misc_buffer_get_run_attributes (GtkTextBuffer *buffer,
+ gint offset,
+ gint *start_offset,
+ gint *end_offset)
+{
+ GtkTextIter iter;
+ AtkAttributeSet *attrib_set = NULL;
+ AtkAttribute *at;
+ GSList *tags, *temp_tags;
+ gdouble scale = 1;
+ gboolean val_set = FALSE;
+ PangoFontMask mask;
+
+ gtk_text_buffer_get_iter_at_offset (buffer, &iter, offset);
+
+ gtk_text_iter_forward_to_tag_toggle (&iter, NULL);
+ *end_offset = gtk_text_iter_get_offset (&iter);
+
+ gtk_text_iter_backward_to_tag_toggle (&iter, NULL);
+ *start_offset = gtk_text_iter_get_offset (&iter);
+
+ gtk_text_buffer_get_iter_at_offset (buffer, &iter, offset);
+
+ tags = gtk_text_iter_get_tags (&iter);
+ tags = g_slist_reverse (tags);
+
+ temp_tags = tags;
+ while (temp_tags && !val_set)
+ {
+ GtkTextTag *tag = GTK_TEXT_TAG (temp_tags->data);
+ PangoFontDescription *font;
+
+ font = tag->values->font;
+
+ if (font)
+ {
+ mask = pango_font_description_get_set_fields (font);
+ val_set = mask & PANGO_FONT_MASK_STYLE;
+ if (val_set)
+ attrib_set = gail_misc_add_to_attr_set (attrib_set, tag->values,
+ ATK_TEXT_ATTR_STYLE);
+ }
+ temp_tags = temp_tags->next;
+ }
+ val_set = FALSE;
+
+ temp_tags = tags;
+ while (temp_tags && !val_set)
+ {
+ GtkTextTag *tag = GTK_TEXT_TAG (temp_tags->data);
+ PangoFontDescription *font;
+
+ font = tag->values->font;
+
+ if (font)
+ {
+ mask = pango_font_description_get_set_fields (font);
+ val_set = mask & PANGO_FONT_MASK_VARIANT;
+ if (val_set)
+ attrib_set = gail_misc_add_to_attr_set (attrib_set, tag->values,
+ ATK_TEXT_ATTR_VARIANT);
+ }
+ temp_tags = temp_tags->next;
+ }
+ val_set = FALSE;
+
+ temp_tags = tags;
+ while (temp_tags && !val_set)
+ {
+ GtkTextTag *tag = GTK_TEXT_TAG (temp_tags->data);
+ PangoFontDescription *font;
+
+ font = tag->values->font;
+
+ if (font)
+ {
+ mask = pango_font_description_get_set_fields (font);
+ val_set = mask & PANGO_FONT_MASK_STRETCH;
+ if (val_set)
+ attrib_set = gail_misc_add_to_attr_set (attrib_set, tag->values,
+ ATK_TEXT_ATTR_STRETCH);
+ }
+ temp_tags = temp_tags->next;
+ }
+ val_set = FALSE;
+
+ temp_tags = tags;
+ while (temp_tags && !val_set)
+ {
+ GtkTextTag *tag = GTK_TEXT_TAG (temp_tags->data);
+
+ val_set = tag->justification_set;
+ if (val_set)
+ attrib_set = gail_misc_add_to_attr_set (attrib_set, tag->values,
+ ATK_TEXT_ATTR_JUSTIFICATION);
+ temp_tags = temp_tags->next;
+ }
+ val_set = FALSE;
+
+ temp_tags = tags;
+ while (temp_tags && !val_set)
+ {
+ GtkTextTag *tag = GTK_TEXT_TAG (temp_tags->data);
+
+ if (tag->values->direction != GTK_TEXT_DIR_NONE)
+ {
+ val_set = TRUE;
+ attrib_set = gail_misc_add_to_attr_set (attrib_set, tag->values,
+ ATK_TEXT_ATTR_DIRECTION);
+ }
+ temp_tags = temp_tags->next;
+ }
+ val_set = FALSE;
+
+ temp_tags = tags;
+ while (temp_tags && !val_set)
+ {
+ GtkTextTag *tag = GTK_TEXT_TAG (temp_tags->data);
+
+ val_set = tag->wrap_mode_set;
+ if (val_set)
+ attrib_set = gail_misc_add_to_attr_set (attrib_set, tag->values,
+ ATK_TEXT_ATTR_WRAP_MODE);
+ temp_tags = temp_tags->next;
+ }
+ val_set = FALSE;
+
+ temp_tags = tags;
+ while (temp_tags && !val_set)
+ {
+ GtkTextTag *tag = GTK_TEXT_TAG (temp_tags->data);
+
+ val_set = tag->fg_stipple_set;
+ if (val_set)
+ attrib_set = gail_misc_add_to_attr_set (attrib_set, tag->values,
+ ATK_TEXT_ATTR_FG_STIPPLE);
+ temp_tags = temp_tags->next;
+ }
+ val_set = FALSE;
+
+ temp_tags = tags;
+ while (temp_tags && !val_set)
+ {
+ GtkTextTag *tag = GTK_TEXT_TAG (temp_tags->data);
+
+ val_set = tag->bg_stipple_set;
+ if (val_set)
+ attrib_set = gail_misc_add_to_attr_set (attrib_set, tag->values,
+ ATK_TEXT_ATTR_BG_STIPPLE);
+ temp_tags = temp_tags->next;
+ }
+ val_set = FALSE;
+
+ temp_tags = tags;
+ while (temp_tags && !val_set)
+ {
+ GtkTextTag *tag = GTK_TEXT_TAG (temp_tags->data);
+
+ val_set = tag->fg_color_set;
+ if (val_set)
+ attrib_set = gail_misc_add_to_attr_set (attrib_set, tag->values,
+ ATK_TEXT_ATTR_FG_COLOR);
+ temp_tags = temp_tags->next;
+ }
+ val_set = FALSE;
+
+ temp_tags = tags;
+ while (temp_tags && !val_set)
+ {
+ GtkTextTag *tag = GTK_TEXT_TAG (temp_tags->data);
+
+ val_set = tag->bg_color_set;
+ if (val_set)
+ attrib_set = gail_misc_add_to_attr_set (attrib_set, tag->values,
+ ATK_TEXT_ATTR_BG_COLOR);
+ temp_tags = temp_tags->next;
+ }
+ val_set = FALSE;
+
+ temp_tags = tags;
+ while (temp_tags && !val_set)
+ {
+ GtkTextTag *tag = GTK_TEXT_TAG (temp_tags->data);
+ PangoFontDescription *font;
+
+ font = tag->values->font;
+
+ if (font)
+ {
+ mask = pango_font_description_get_set_fields (font);
+ val_set = mask & PANGO_FONT_MASK_FAMILY;
+ if (val_set)
+ attrib_set = gail_misc_add_to_attr_set (attrib_set, tag->values,
+ ATK_TEXT_ATTR_FAMILY_NAME);
+ }
+ temp_tags = temp_tags->next;
+ }
+ val_set = FALSE;
+
+ temp_tags = tags;
+ while (temp_tags && !val_set)
+ {
+ GtkTextTag *tag = GTK_TEXT_TAG (temp_tags->data);
+
+ val_set = tag->language_set;
+ if (val_set)
+ attrib_set = gail_misc_add_to_attr_set (attrib_set, tag->values,
+ ATK_TEXT_ATTR_LANGUAGE);
+ temp_tags = temp_tags->next;
+ }
+ val_set = FALSE;
+
+ temp_tags = tags;
+ while (temp_tags && !val_set)
+ {
+ GtkTextTag *tag = GTK_TEXT_TAG (temp_tags->data);
+ PangoFontDescription *font;
+
+ font = tag->values->font;
+
+ if (font)
+ {
+ mask = pango_font_description_get_set_fields (font);
+ val_set = mask & PANGO_FONT_MASK_WEIGHT;
+ if (val_set)
+ attrib_set = gail_misc_add_to_attr_set (attrib_set, tag->values,
+ ATK_TEXT_ATTR_WEIGHT);
+ }
+ temp_tags = temp_tags->next;
+ }
+ val_set = FALSE;
+
+
+ /*
+ * scale is special as the scale is the product of all scale values
+ * specified.
+ */
+ temp_tags = tags;
+ while (temp_tags)
+ {
+ GtkTextTag *tag = GTK_TEXT_TAG (temp_tags->data);
+
+ if (tag->scale_set)
+ {
+ val_set = TRUE;
+ scale *= tag->values->font_scale;
+ }
+ temp_tags = temp_tags->next;
+ }
+ if (val_set)
+ {
+ at = g_malloc(sizeof(AtkAttribute));
+ at->name = g_strdup(atk_text_attribute_get_name (ATK_TEXT_ATTR_SCALE));
+ at->value = g_strdup_printf("%g", scale);
+ attrib_set = g_slist_prepend(attrib_set, at);
+ }
+ val_set = FALSE;
+
+ temp_tags = tags;
+ while (temp_tags && !val_set)
+ {
+ GtkTextTag *tag = GTK_TEXT_TAG (temp_tags->data);
+ PangoFontDescription *font;
+
+ font = tag->values->font;
+
+ if (font)
+ {
+ mask = pango_font_description_get_set_fields (font);
+ val_set = mask & PANGO_FONT_MASK_SIZE;
+ if (val_set)
+ attrib_set = gail_misc_add_to_attr_set (attrib_set, tag->values,
+ ATK_TEXT_ATTR_SIZE);
+ }
+ temp_tags = temp_tags->next;
+ }
+ val_set = FALSE;
+
+ temp_tags = tags;
+ while (temp_tags && !val_set)
+ {
+ GtkTextTag *tag = GTK_TEXT_TAG (temp_tags->data);
+
+ val_set = tag->strikethrough_set;
+ if (val_set)
+ attrib_set = gail_misc_add_to_attr_set (attrib_set, tag->values,
+ ATK_TEXT_ATTR_STRIKETHROUGH);
+ temp_tags = temp_tags->next;
+ }
+ val_set = FALSE;
+
+ temp_tags = tags;
+ while (temp_tags && !val_set)
+ {
+ GtkTextTag *tag = GTK_TEXT_TAG (temp_tags->data);
+
+ val_set = tag->underline_set;
+ if (val_set)
+ attrib_set = gail_misc_add_to_attr_set (attrib_set, tag->values,
+ ATK_TEXT_ATTR_UNDERLINE);
+ temp_tags = temp_tags->next;
+ }
+ val_set = FALSE;
+
+ temp_tags = tags;
+ while (temp_tags && !val_set)
+ {
+ GtkTextTag *tag = GTK_TEXT_TAG (temp_tags->data);
+
+ val_set = tag->rise_set;
+ if (val_set)
+ attrib_set = gail_misc_add_to_attr_set (attrib_set, tag->values,
+ ATK_TEXT_ATTR_RISE);
+ temp_tags = temp_tags->next;
+ }
+ val_set = FALSE;
+
+ temp_tags = tags;
+ while (temp_tags && !val_set)
+ {
+ GtkTextTag *tag = GTK_TEXT_TAG (temp_tags->data);
+
+ val_set = tag->bg_full_height_set;
+ if (val_set)
+ attrib_set = gail_misc_add_to_attr_set (attrib_set, tag->values,
+ ATK_TEXT_ATTR_BG_FULL_HEIGHT);
+ temp_tags = temp_tags->next;
+ }
+ val_set = FALSE;
+
+ temp_tags = tags;
+ while (temp_tags && !val_set)
+ {
+ GtkTextTag *tag = GTK_TEXT_TAG (temp_tags->data);
+
+ val_set = tag->pixels_inside_wrap_set;
+ if (val_set)
+ attrib_set = gail_misc_add_to_attr_set (attrib_set, tag->values,
+ ATK_TEXT_ATTR_PIXELS_INSIDE_WRAP);
+ temp_tags = temp_tags->next;
+ }
+ val_set = FALSE;
+
+ temp_tags = tags;
+ while (temp_tags && !val_set)
+ {
+ GtkTextTag *tag = GTK_TEXT_TAG (temp_tags->data);
+
+ val_set = tag->pixels_below_lines_set;
+ if (val_set)
+ attrib_set = gail_misc_add_to_attr_set (attrib_set, tag->values,
+ ATK_TEXT_ATTR_PIXELS_BELOW_LINES);
+ temp_tags = temp_tags->next;
+ }
+ val_set = FALSE;
+
+ temp_tags = tags;
+ while (temp_tags && !val_set)
+ {
+ GtkTextTag *tag = GTK_TEXT_TAG (temp_tags->data);
+
+ val_set = tag->pixels_above_lines_set;
+ if (val_set)
+ attrib_set = gail_misc_add_to_attr_set (attrib_set, tag->values,
+ ATK_TEXT_ATTR_PIXELS_ABOVE_LINES);
+ temp_tags = temp_tags->next;
+ }
+ val_set = FALSE;
+
+ temp_tags = tags;
+ while (temp_tags && !val_set)
+ {
+ GtkTextTag *tag = GTK_TEXT_TAG (temp_tags->data);
+
+ val_set = tag->editable_set;
+ if (val_set)
+ attrib_set = gail_misc_add_to_attr_set (attrib_set, tag->values,
+ ATK_TEXT_ATTR_EDITABLE);
+ temp_tags = temp_tags->next;
+ }
+ val_set = FALSE;
+
+ temp_tags = tags;
+ while (temp_tags && !val_set)
+ {
+ GtkTextTag *tag = GTK_TEXT_TAG (temp_tags->data);
+
+ val_set = tag->invisible_set;
+ if (val_set)
+ attrib_set = gail_misc_add_to_attr_set (attrib_set, tag->values,
+ ATK_TEXT_ATTR_INVISIBLE);
+ temp_tags = temp_tags->next;
+ }
+ val_set = FALSE;
+
+ temp_tags = tags;
+ while (temp_tags && !val_set)
+ {
+ GtkTextTag *tag = GTK_TEXT_TAG (temp_tags->data);
+
+ val_set = tag->indent_set;
+ if (val_set)
+ attrib_set = gail_misc_add_to_attr_set (attrib_set, tag->values,
+ ATK_TEXT_ATTR_INDENT);
+ temp_tags = temp_tags->next;
+ }
+ val_set = FALSE;
+
+ temp_tags = tags;
+ while (temp_tags && !val_set)
+ {
+ GtkTextTag *tag = GTK_TEXT_TAG (temp_tags->data);
+
+ val_set = tag->right_margin_set;
+ if (val_set)
+ attrib_set = gail_misc_add_to_attr_set (attrib_set, tag->values,
+ ATK_TEXT_ATTR_RIGHT_MARGIN);
+ temp_tags = temp_tags->next;
+ }
+ val_set = FALSE;
+
+ temp_tags = tags;
+ while (temp_tags && !val_set)
+ {
+ GtkTextTag *tag = GTK_TEXT_TAG (temp_tags->data);
+
+ val_set = tag->left_margin_set;
+ if (val_set)
+ attrib_set = gail_misc_add_to_attr_set (attrib_set, tag->values,
+ ATK_TEXT_ATTR_LEFT_MARGIN);
+ temp_tags = temp_tags->next;
+ }
+ val_set = FALSE;
+
+ g_slist_free (tags);
+ return attrib_set;
+}
--- /dev/null
+/* GAIL - The GNOME Accessibility Implementation Library
+ * Copyright 2001 Sun Microsystems Inc.
+ *
+ * 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 "config.h"
+
+#include <stdlib.h>
+#include "gailtextutil.h"
+
+/**
+ * SECTION:gailtextutil
+ * @Short_description: GailTextUtil is a utility class which can be used to
+ * implement some of the #AtkText functions for accessible objects
+ * which implement #AtkText.
+ * @Title: GailTextUtil
+ *
+ * GailTextUtil is a utility class which can be used to implement the
+ * #AtkText functions which get text for accessible objects which implement
+ * #AtkText.
+ *
+ * In GAIL it is used by the accsesible objects for #GnomeCanvasText, #GtkEntry,
+ * #GtkLabel, #GtkCellRendererText and #GtkTextView.
+ */
+
+static void gail_text_util_class_init (GailTextUtilClass *klass);
+
+static void gail_text_util_init (GailTextUtil *textutil);
+static void gail_text_util_finalize (GObject *object);
+
+
+static void get_pango_text_offsets (PangoLayout *layout,
+ GtkTextBuffer *buffer,
+ GailOffsetType function,
+ AtkTextBoundary boundary_type,
+ gint offset,
+ gint *start_offset,
+ gint *end_offset,
+ GtkTextIter *start_iter,
+ GtkTextIter *end_iter);
+static GObjectClass *parent_class = NULL;
+
+GType
+gail_text_util_get_type(void)
+{
+ static GType type = 0;
+
+ if (!type)
+ {
+ const GTypeInfo tinfo =
+ {
+ sizeof (GailTextUtilClass),
+ (GBaseInitFunc) NULL, /* base init */
+ (GBaseFinalizeFunc) NULL, /* base finalize */
+ (GClassInitFunc) gail_text_util_class_init,
+ (GClassFinalizeFunc) NULL, /* class finalize */
+ NULL, /* class data */
+ sizeof(GailTextUtil),
+ 0, /* nb preallocs */
+ (GInstanceInitFunc) gail_text_util_init,
+ NULL, /* value table */
+ };
+
+ type = g_type_register_static (G_TYPE_OBJECT, "EvGailTextUtil", &tinfo, 0);
+ }
+ return type;
+}
+
+/**
+ * gail_text_util_new:
+ *
+ * This function creates a new GailTextUtil object.
+ *
+ * Returns: the GailTextUtil object
+ **/
+GailTextUtil*
+gail_text_util_new (void)
+{
+ return GAIL_TEXT_UTIL (g_object_new (GAIL_TYPE_TEXT_UTIL, NULL));
+}
+
+static void
+gail_text_util_init (GailTextUtil *textutil)
+{
+ textutil->buffer = NULL;
+}
+
+static void
+gail_text_util_class_init (GailTextUtilClass *klass)
+{
+ GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
+
+ parent_class = g_type_class_peek_parent (klass);
+
+ gobject_class->finalize = gail_text_util_finalize;
+}
+
+static void
+gail_text_util_finalize (GObject *object)
+{
+ GailTextUtil *textutil = GAIL_TEXT_UTIL (object);
+
+ if (textutil->buffer)
+ g_object_unref (textutil->buffer);
+
+ G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+/**
+ * gail_text_util_text_setup:
+ * @textutil: The #GailTextUtil to be initialized.
+ * @text: A gchar* which points to the text to be stored in the GailTextUtil
+ *
+ * This function initializes the GailTextUtil with the specified character string,
+ **/
+void
+gail_text_util_text_setup (GailTextUtil *textutil,
+ const gchar *text)
+{
+ g_return_if_fail (GAIL_IS_TEXT_UTIL (textutil));
+
+ if (textutil->buffer)
+ {
+ if (!text)
+ {
+ g_object_unref (textutil->buffer);
+ textutil->buffer = NULL;
+ return;
+ }
+ }
+ else
+ {
+ textutil->buffer = gtk_text_buffer_new (NULL);
+ }
+
+ gtk_text_buffer_set_text (textutil->buffer, text, -1);
+}
+
+/**
+ * gail_text_util_buffer_setup:
+ * @textutil: A #GailTextUtil to be initialized
+ * @buffer: The #GtkTextBuffer which identifies the text to be stored in the GailUtil.
+ *
+ * This function initializes the GailTextUtil with the specified GtkTextBuffer
+ **/
+void
+gail_text_util_buffer_setup (GailTextUtil *textutil,
+ GtkTextBuffer *buffer)
+{
+ g_return_if_fail (GAIL_IS_TEXT_UTIL (textutil));
+
+ textutil->buffer = g_object_ref (buffer);
+}
+
+/**
+ * gail_text_util_get_text:
+ * @textutil: A #GailTextUtil
+ * @layout: A gpointer which is a PangoLayout, a GtkTreeView of NULL
+ * @function: An enumeration specifying whether to return the text before, at, or
+ * after the offset.
+ * @boundary_type: The boundary type.
+ * @offset: The offset of the text in the GailTextUtil
+ * @start_offset: Address of location in which the start offset is returned
+ * @end_offset: Address of location in which the end offset is returned
+ *
+ * This function gets the requested substring from the text in the GtkTextUtil.
+ * The layout is used only for getting the text on a line. The value is NULL
+ * for a GtkTextView which is not wrapped, is a GtkTextView for a GtkTextView
+ * which is wrapped and is a PangoLayout otherwise.
+ *
+ * Returns: the substring requested
+ **/
+gchar*
+gail_text_util_get_text (GailTextUtil *textutil,
+ gpointer layout,
+ GailOffsetType function,
+ AtkTextBoundary boundary_type,
+ gint offset,
+ gint *start_offset,
+ gint *end_offset)
+{
+ GtkTextIter start, end;
+ gint line_number;
+ GtkTextBuffer *buffer;
+
+ g_return_val_if_fail (GAIL_IS_TEXT_UTIL (textutil), NULL);
+
+ buffer = textutil->buffer;
+ if (buffer == NULL)
+ {
+ *start_offset = 0;
+ *end_offset = 0;
+ return NULL;
+ }
+
+ if (!gtk_text_buffer_get_char_count (buffer))
+ {
+ *start_offset = 0;
+ *end_offset = 0;
+ return g_strdup ("");
+ }
+ gtk_text_buffer_get_iter_at_offset (buffer, &start, offset);
+
+
+ end = start;
+
+ switch (function)
+ {
+ case GAIL_BEFORE_OFFSET:
+ switch (boundary_type)
+ {
+ case ATK_TEXT_BOUNDARY_CHAR:
+ gtk_text_iter_backward_char(&start);
+ break;
+ case ATK_TEXT_BOUNDARY_WORD_START:
+ if (!gtk_text_iter_starts_word (&start))
+ gtk_text_iter_backward_word_start (&start);
+ end = start;
+ gtk_text_iter_backward_word_start(&start);
+ break;
+ case ATK_TEXT_BOUNDARY_WORD_END:
+ if (gtk_text_iter_inside_word (&start) &&
+ !gtk_text_iter_starts_word (&start))
+ gtk_text_iter_backward_word_start (&start);
+ while (!gtk_text_iter_ends_word (&start))
+ {
+ if (!gtk_text_iter_backward_char (&start))
+ break;
+ }
+ end = start;
+ gtk_text_iter_backward_word_start(&start);
+ while (!gtk_text_iter_ends_word (&start))
+ {
+ if (!gtk_text_iter_backward_char (&start))
+ break;
+ }
+ break;
+ case ATK_TEXT_BOUNDARY_SENTENCE_START:
+ if (!gtk_text_iter_starts_sentence (&start))
+ gtk_text_iter_backward_sentence_start (&start);
+ end = start;
+ gtk_text_iter_backward_sentence_start (&start);
+ break;
+ case ATK_TEXT_BOUNDARY_SENTENCE_END:
+ if (gtk_text_iter_inside_sentence (&start) &&
+ !gtk_text_iter_starts_sentence (&start))
+ gtk_text_iter_backward_sentence_start (&start);
+ while (!gtk_text_iter_ends_sentence (&start))
+ {
+ if (!gtk_text_iter_backward_char (&start))
+ break;
+ }
+ end = start;
+ gtk_text_iter_backward_sentence_start (&start);
+ while (!gtk_text_iter_ends_sentence (&start))
+ {
+ if (!gtk_text_iter_backward_char (&start))
+ break;
+ }
+ break;
+ case ATK_TEXT_BOUNDARY_LINE_START:
+ if (layout == NULL)
+ {
+ line_number = gtk_text_iter_get_line (&start);
+ if (line_number == 0)
+ {
+ gtk_text_buffer_get_iter_at_offset (buffer,
+ &start, 0);
+ }
+ else
+ {
+ gtk_text_iter_backward_line (&start);
+ gtk_text_iter_forward_line (&start);
+ }
+ end = start;
+ gtk_text_iter_backward_line (&start);
+ }
+ else if GTK_IS_TEXT_VIEW (layout)
+ {
+ GtkTextView *view = GTK_TEXT_VIEW (layout);
+
+ gtk_text_view_backward_display_line_start (view, &start);
+ end = start;
+ gtk_text_view_backward_display_line (view, &start);
+ }
+ else if (PANGO_IS_LAYOUT (layout))
+ get_pango_text_offsets (PANGO_LAYOUT (layout),
+ buffer,
+ function,
+ boundary_type,
+ offset,
+ start_offset,
+ end_offset,
+ &start,
+ &end);
+ break;
+ case ATK_TEXT_BOUNDARY_LINE_END:
+ if (layout == NULL)
+ {
+ line_number = gtk_text_iter_get_line (&start);
+ if (line_number == 0)
+ {
+ gtk_text_buffer_get_iter_at_offset (buffer,
+ &start, 0);
+ end = start;
+ }
+ else
+ {
+ gtk_text_iter_backward_line (&start);
+ end = start;
+ while (!gtk_text_iter_ends_line (&start))
+ {
+ if (!gtk_text_iter_backward_char (&start))
+ break;
+ }
+ gtk_text_iter_forward_to_line_end (&end);
+ }
+ }
+ else if GTK_IS_TEXT_VIEW (layout)
+ {
+ GtkTextView *view = GTK_TEXT_VIEW (layout);
+
+ gtk_text_view_backward_display_line_start (view, &start);
+ if (!gtk_text_iter_is_start (&start))
+ {
+ gtk_text_view_backward_display_line (view, &start);
+ end = start;
+ if (!gtk_text_iter_is_start (&start))
+ {
+ gtk_text_view_backward_display_line (view, &start);
+ gtk_text_view_forward_display_line_end (view, &start);
+ }
+ gtk_text_view_forward_display_line_end (view, &end);
+ }
+ else
+ {
+ end = start;
+ }
+ }
+ else if (PANGO_IS_LAYOUT (layout))
+ get_pango_text_offsets (PANGO_LAYOUT (layout),
+ buffer,
+ function,
+ boundary_type,
+ offset,
+ start_offset,
+ end_offset,
+ &start,
+ &end);
+ break;
+ }
+ break;
+
+ case GAIL_AT_OFFSET:
+ switch (boundary_type)
+ {
+ case ATK_TEXT_BOUNDARY_CHAR:
+ gtk_text_iter_forward_char (&end);
+ break;
+ case ATK_TEXT_BOUNDARY_WORD_START:
+ if (!gtk_text_iter_starts_word (&start))
+ gtk_text_iter_backward_word_start (&start);
+ if (gtk_text_iter_inside_word (&end))
+ gtk_text_iter_forward_word_end (&end);
+ while (!gtk_text_iter_starts_word (&end))
+ {
+ if (!gtk_text_iter_forward_char (&end))
+ break;
+ }
+ break;
+ case ATK_TEXT_BOUNDARY_WORD_END:
+ if (gtk_text_iter_inside_word (&start) &&
+ !gtk_text_iter_starts_word (&start))
+ gtk_text_iter_backward_word_start (&start);
+ while (!gtk_text_iter_ends_word (&start))
+ {
+ if (!gtk_text_iter_backward_char (&start))
+ break;
+ }
+ gtk_text_iter_forward_word_end (&end);
+ break;
+ case ATK_TEXT_BOUNDARY_SENTENCE_START:
+ if (!gtk_text_iter_starts_sentence (&start))
+ gtk_text_iter_backward_sentence_start (&start);
+ if (gtk_text_iter_inside_sentence (&end))
+ gtk_text_iter_forward_sentence_end (&end);
+ while (!gtk_text_iter_starts_sentence (&end))
+ {
+ if (!gtk_text_iter_forward_char (&end))
+ break;
+ }
+ break;
+ case ATK_TEXT_BOUNDARY_SENTENCE_END:
+ if (gtk_text_iter_inside_sentence (&start) &&
+ !gtk_text_iter_starts_sentence (&start))
+ gtk_text_iter_backward_sentence_start (&start);
+ while (!gtk_text_iter_ends_sentence (&start))
+ {
+ if (!gtk_text_iter_backward_char (&start))
+ break;
+ }
+ gtk_text_iter_forward_sentence_end (&end);
+ break;
+ case ATK_TEXT_BOUNDARY_LINE_START:
+ if (layout == NULL)
+ {
+ line_number = gtk_text_iter_get_line (&start);
+ if (line_number == 0)
+ {
+ gtk_text_buffer_get_iter_at_offset (buffer,
+ &start, 0);
+ }
+ else
+ {
+ gtk_text_iter_backward_line (&start);
+ gtk_text_iter_forward_line (&start);
+ }
+ gtk_text_iter_forward_line (&end);
+ }
+ else if GTK_IS_TEXT_VIEW (layout)
+ {
+ GtkTextView *view = GTK_TEXT_VIEW (layout);
+
+ gtk_text_view_backward_display_line_start (view, &start);
+ /*
+ * The call to gtk_text_iter_forward_to_end() is needed
+ * because of bug 81960
+ */
+ if (!gtk_text_view_forward_display_line (view, &end))
+ gtk_text_iter_forward_to_end (&end);
+ }
+ else if PANGO_IS_LAYOUT (layout)
+ get_pango_text_offsets (PANGO_LAYOUT (layout),
+ buffer,
+ function,
+ boundary_type,
+ offset,
+ start_offset,
+ end_offset,
+ &start,
+ &end);
+
+ break;
+ case ATK_TEXT_BOUNDARY_LINE_END:
+ if (layout == NULL)
+ {
+ line_number = gtk_text_iter_get_line (&start);
+ if (line_number == 0)
+ {
+ gtk_text_buffer_get_iter_at_offset (buffer,
+ &start, 0);
+ }
+ else
+ {
+ gtk_text_iter_backward_line (&start);
+ gtk_text_iter_forward_line (&start);
+ }
+ while (!gtk_text_iter_ends_line (&start))
+ {
+ if (!gtk_text_iter_backward_char (&start))
+ break;
+ }
+ gtk_text_iter_forward_to_line_end (&end);
+ }
+ else if GTK_IS_TEXT_VIEW (layout)
+ {
+ GtkTextView *view = GTK_TEXT_VIEW (layout);
+
+ gtk_text_view_backward_display_line_start (view, &start);
+ if (!gtk_text_iter_is_start (&start))
+ {
+ gtk_text_view_backward_display_line (view, &start);
+ gtk_text_view_forward_display_line_end (view, &start);
+ }
+ gtk_text_view_forward_display_line_end (view, &end);
+ }
+ else if PANGO_IS_LAYOUT (layout)
+ get_pango_text_offsets (PANGO_LAYOUT (layout),
+ buffer,
+ function,
+ boundary_type,
+ offset,
+ start_offset,
+ end_offset,
+ &start,
+ &end);
+ break;
+ }
+ break;
+
+ case GAIL_AFTER_OFFSET:
+ switch (boundary_type)
+ {
+ case ATK_TEXT_BOUNDARY_CHAR:
+ gtk_text_iter_forward_char(&start);
+ gtk_text_iter_forward_chars(&end, 2);
+ break;
+ case ATK_TEXT_BOUNDARY_WORD_START:
+ if (gtk_text_iter_inside_word (&end))
+ gtk_text_iter_forward_word_end (&end);
+ while (!gtk_text_iter_starts_word (&end))
+ {
+ if (!gtk_text_iter_forward_char (&end))
+ break;
+ }
+ start = end;
+ if (!gtk_text_iter_is_end (&end))
+ {
+ gtk_text_iter_forward_word_end (&end);
+ while (!gtk_text_iter_starts_word (&end))
+ {
+ if (!gtk_text_iter_forward_char (&end))
+ break;
+ }
+ }
+ break;
+ case ATK_TEXT_BOUNDARY_WORD_END:
+ gtk_text_iter_forward_word_end (&end);
+ start = end;
+ if (!gtk_text_iter_is_end (&end))
+ gtk_text_iter_forward_word_end (&end);
+ break;
+ case ATK_TEXT_BOUNDARY_SENTENCE_START:
+ if (gtk_text_iter_inside_sentence (&end))
+ gtk_text_iter_forward_sentence_end (&end);
+ while (!gtk_text_iter_starts_sentence (&end))
+ {
+ if (!gtk_text_iter_forward_char (&end))
+ break;
+ }
+ start = end;
+ if (!gtk_text_iter_is_end (&end))
+ {
+ gtk_text_iter_forward_sentence_end (&end);
+ while (!gtk_text_iter_starts_sentence (&end))
+ {
+ if (!gtk_text_iter_forward_char (&end))
+ break;
+ }
+ }
+ break;
+ case ATK_TEXT_BOUNDARY_SENTENCE_END:
+ gtk_text_iter_forward_sentence_end (&end);
+ start = end;
+ if (!gtk_text_iter_is_end (&end))
+ gtk_text_iter_forward_sentence_end (&end);
+ break;
+ case ATK_TEXT_BOUNDARY_LINE_START:
+ if (layout == NULL)
+ {
+ gtk_text_iter_forward_line (&end);
+ start = end;
+ gtk_text_iter_forward_line (&end);
+ }
+ else if GTK_IS_TEXT_VIEW (layout)
+ {
+ GtkTextView *view = GTK_TEXT_VIEW (layout);
+
+ gtk_text_view_forward_display_line (view, &end);
+ start = end;
+ gtk_text_view_forward_display_line (view, &end);
+ }
+ else if (PANGO_IS_LAYOUT (layout))
+ get_pango_text_offsets (PANGO_LAYOUT (layout),
+ buffer,
+ function,
+ boundary_type,
+ offset,
+ start_offset,
+ end_offset,
+ &start,
+ &end);
+ break;
+ case ATK_TEXT_BOUNDARY_LINE_END:
+ if (layout == NULL)
+ {
+ gtk_text_iter_forward_line (&start);
+ end = start;
+ if (!gtk_text_iter_is_end (&start))
+ {
+ while (!gtk_text_iter_ends_line (&start))
+ {
+ if (!gtk_text_iter_backward_char (&start))
+ break;
+ }
+ gtk_text_iter_forward_to_line_end (&end);
+ }
+ }
+ else if GTK_IS_TEXT_VIEW (layout)
+ {
+ GtkTextView *view = GTK_TEXT_VIEW (layout);
+
+ gtk_text_view_forward_display_line_end (view, &end);
+ start = end;
+ gtk_text_view_forward_display_line (view, &end);
+ gtk_text_view_forward_display_line_end (view, &end);
+ }
+ else if (PANGO_IS_LAYOUT (layout))
+ get_pango_text_offsets (PANGO_LAYOUT (layout),
+ buffer,
+ function,
+ boundary_type,
+ offset,
+ start_offset,
+ end_offset,
+ &start,
+ &end);
+ break;
+ }
+ break;
+ }
+ *start_offset = gtk_text_iter_get_offset (&start);
+ *end_offset = gtk_text_iter_get_offset (&end);
+
+ return gtk_text_buffer_get_text (buffer, &start, &end, FALSE);
+}
+
+/**
+ * gail_text_util_get_substring:
+ * @textutil: A #GailTextUtil
+ * @start_pos: The start position of the substring
+ * @end_pos: The end position of the substring.
+ *
+ * Gets the substring indicated by @start_pos and @end_pos
+ *
+ * Returns: the substring indicated by @start_pos and @end_pos
+ **/
+gchar*
+gail_text_util_get_substring (GailTextUtil *textutil,
+ gint start_pos,
+ gint end_pos)
+{
+ GtkTextIter start, end;
+ GtkTextBuffer *buffer;
+
+ g_return_val_if_fail(GAIL_IS_TEXT_UTIL (textutil), NULL);
+
+ buffer = textutil->buffer;
+ if (buffer == NULL)
+ return NULL;
+
+ gtk_text_buffer_get_iter_at_offset (buffer, &start, start_pos);
+ if (end_pos < 0)
+ gtk_text_buffer_get_end_iter (buffer, &end);
+ else
+ gtk_text_buffer_get_iter_at_offset (buffer, &end, end_pos);
+
+ return gtk_text_buffer_get_text (buffer, &start, &end, FALSE);
+}
+
+static void
+get_pango_text_offsets (PangoLayout *layout,
+ GtkTextBuffer *buffer,
+ GailOffsetType function,
+ AtkTextBoundary boundary_type,
+ gint offset,
+ gint *start_offset,
+ gint *end_offset,
+ GtkTextIter *start_iter,
+ GtkTextIter *end_iter)
+{
+ PangoLayoutIter *iter;
+ PangoLayoutLine *line, *prev_line = NULL, *prev_prev_line = NULL;
+ gint index, start_index, end_index;
+ const gchar *text;
+ gboolean found = FALSE;
+
+ text = pango_layout_get_text (layout);
+ index = g_utf8_offset_to_pointer (text, offset) - text;
+ iter = pango_layout_get_iter (layout);
+ do
+ {
+ line = pango_layout_iter_get_line (iter);
+ start_index = line->start_index;
+ end_index = start_index + line->length;
+
+ if (index >= start_index && index <= end_index)
+ {
+ /*
+ * Found line for offset
+ */
+ switch (function)
+ {
+ case GAIL_BEFORE_OFFSET:
+ /*
+ * We want the previous line
+ */
+ if (prev_line)
+ {
+ switch (boundary_type)
+ {
+ case ATK_TEXT_BOUNDARY_LINE_START:
+ end_index = start_index;
+ start_index = prev_line->start_index;
+ break;
+ case ATK_TEXT_BOUNDARY_LINE_END:
+ if (prev_prev_line)
+ start_index = prev_prev_line->start_index +
+ prev_prev_line->length;
+ end_index = prev_line->start_index + prev_line->length;
+ break;
+ default:
+ g_assert_not_reached();
+ }
+ }
+ else
+ start_index = end_index = 0;
+ break;
+ case GAIL_AT_OFFSET:
+ switch (boundary_type)
+ {
+ case ATK_TEXT_BOUNDARY_LINE_START:
+ if (pango_layout_iter_next_line (iter))
+ end_index = pango_layout_iter_get_line (iter)->start_index;
+ break;
+ case ATK_TEXT_BOUNDARY_LINE_END:
+ if (prev_line)
+ start_index = prev_line->start_index +
+ prev_line->length;
+ break;
+ default:
+ g_assert_not_reached();
+ }
+ break;
+ case GAIL_AFTER_OFFSET:
+ /*
+ * We want the next line
+ */
+ if (pango_layout_iter_next_line (iter))
+ {
+ line = pango_layout_iter_get_line (iter);
+ switch (boundary_type)
+ {
+ case ATK_TEXT_BOUNDARY_LINE_START:
+ start_index = line->start_index;
+ if (pango_layout_iter_next_line (iter))
+ end_index = pango_layout_iter_get_line (iter)->start_index;
+ else
+ end_index = start_index + line->length;
+ break;
+ case ATK_TEXT_BOUNDARY_LINE_END:
+ start_index = end_index;
+ end_index = line->start_index + line->length;
+ break;
+ default:
+ g_assert_not_reached();
+ }
+ }
+ else
+ start_index = end_index;
+ break;
+ }
+ found = TRUE;
+ break;
+ }
+ prev_prev_line = prev_line;
+ prev_line = line;
+ }
+ while (pango_layout_iter_next_line (iter));
+
+ if (!found)
+ {
+ start_index = prev_line->start_index + prev_line->length;
+ end_index = start_index;
+ }
+ pango_layout_iter_free (iter);
+ *start_offset = g_utf8_pointer_to_offset (text, text + start_index);
+ *end_offset = g_utf8_pointer_to_offset (text, text + end_index);
+
+ gtk_text_buffer_get_iter_at_offset (buffer, start_iter, *start_offset);
+ gtk_text_buffer_get_iter_at_offset (buffer, end_iter, *end_offset);
+}
https://www.fi.muni.cz/~kas/git / evince.git / commitdiff