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gtk/modules/other/gail/libgail-util/gailmisc.c
Javier Jardón 104fdae2bf Gail: use accessor functions to access GtkWidget
2010-08-22 18:32:43 +02:00

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/* 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,
const 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 = gtk_widget_get_window (widget);
gdk_window_get_origin (window, x_window, y_window);
window = gdk_window_get_toplevel (gtk_widget_get_window (widget));
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_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_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;
}
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