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Hacky support for combo boxes

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This extends the current hacks in gailmenuitem to not only
recognize menuitems with labels in them, but also menuitems
which contain a GtkCellView, since those are used by GtkComboBox
nowadays.

Some of the AtkText apis are not fully supported.

https://bugzilla.gnome.org/show_bug.cgi?id=650302
This commit is contained in:
Matthias Clasen 2011-05-16 19:03:23 -04:00
parent 288df3d016
commit 68fcede223
1 changed files with 96 additions and 68 deletions
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164
modules/other/gail/gailmenuitem.c
View File

@ -112,6 +112,7 @@ static AtkAttributeSet* gail_menu_item_get_run_attributes (AtkText *text,
gint *end_offset);
static AtkAttributeSet* gail_menu_item_get_default_attributes (AtkText *text);
static GtkWidget* get_label_from_container (GtkWidget *container);
static gchar * get_text_from_label_widget (GtkWidget *widget);
G_DEFINE_TYPE_WITH_CODE (GailMenuItem, gail_menu_item, GAIL_TYPE_CONTAINER,
@ -148,16 +149,13 @@ gail_menu_item_real_initialize (AtkObject *obj,
item->text = NULL;
label = get_label_from_container (GTK_WIDGET (data));
if (GTK_IS_LABEL (label))
{
if (gtk_widget_get_mapped (label))
gail_menu_item_init_textutil (item, label);
else
g_signal_connect (label,
"map",
G_CALLBACK (gail_menu_item_label_map_gtk),
item);
}
if (gtk_widget_get_mapped (label))
gail_menu_item_init_textutil (item, label);
else
g_signal_connect (label,
"map",
G_CALLBACK (gail_menu_item_label_map_gtk),
item);
g_signal_connect (data,
"select",
@ -258,7 +256,7 @@ gail_menu_item_init_textutil (GailMenuItem *item,
(GCallback) gail_menu_item_notify_label_gtk,
item);
}
label_text = gtk_label_get_text (GTK_LABEL (label));
label_text = get_text_from_label_widget (label);
gail_text_util_text_setup (item->textutil, label_text);
}
@ -296,22 +294,17 @@ gail_menu_item_get_text (AtkText *text,
label = get_label_from_container (widget);
if (!GTK_IS_LABEL (label))
return NULL;
item = GAIL_MENU_ITEM (text);
if (!item->textutil)
if (!item->textutil)
gail_menu_item_init_textutil (item, label);
label_text = gtk_label_get_text (GTK_LABEL (label));
label_text = get_text_from_label_widget (label);
if (label_text == NULL)
return NULL;
else
{
return gail_text_util_get_substring (item->textutil,
return gail_text_util_get_substring (item->textutil,
start_pos, end_pos);
}
}
static gchar*
@ -334,15 +327,12 @@ gail_menu_item_get_text_before_offset (AtkText *text,
/* Get label */
label = get_label_from_container (widget);
if (!GTK_IS_LABEL(label))
return NULL;
item = GAIL_MENU_ITEM (text);
if (!item->textutil)
gail_menu_item_init_textutil (item, label);
return gail_text_util_get_text (item->textutil,
gtk_label_get_layout (GTK_LABEL (label)), GAIL_BEFORE_OFFSET,
NULL, GAIL_BEFORE_OFFSET,
boundary_type, offset, start_offset, end_offset);
}
@ -366,15 +356,12 @@ gail_menu_item_get_text_at_offset (AtkText *text,
/* Get label */
label = get_label_from_container (widget);
if (!GTK_IS_LABEL(label))
return NULL;
item = GAIL_MENU_ITEM (text);
if (!item->textutil)
gail_menu_item_init_textutil (item, label);
return gail_text_util_get_text (item->textutil,
gtk_label_get_layout (GTK_LABEL (label)), GAIL_AT_OFFSET,
NULL, GAIL_AT_OFFSET,
boundary_type, offset, start_offset, end_offset);
}
@ -400,35 +387,31 @@ gail_menu_item_get_text_after_offset (AtkText *text,
/* Get label */
label = get_label_from_container (widget);
if (!GTK_IS_LABEL(label))
return NULL;
item = GAIL_MENU_ITEM (text);
if (!item->textutil)
gail_menu_item_init_textutil (item, label);
return gail_text_util_get_text (item->textutil,
gtk_label_get_layout (GTK_LABEL (label)), GAIL_AFTER_OFFSET,
NULL, GAIL_AFTER_OFFSET,
boundary_type, offset, start_offset, end_offset);
}
static gint
gail_menu_item_get_character_count (AtkText *text)
gail_menu_item_get_character_count (AtkText *atk_text)
{
GtkWidget *widget;
GtkWidget *label;
gchar *text;
gint len;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text));
if (widget == NULL)
/* State is defunct */
return 0;
text = gail_menu_item_get_text (atk_text, 0, -1);
if (text)
{
len = g_utf8_strlen (text, -1);
g_free (text);
}
else
len = 0;
label = get_label_from_container (widget);
if (!GTK_IS_LABEL(label))
return 0;
return g_utf8_strlen (gtk_label_get_text (GTK_LABEL (label)), -1);
return len;
}
static void
@ -456,15 +439,15 @@ gail_menu_item_get_character_extents (AtkText *text,
if (!GTK_IS_LABEL(label))
return;
gtk_label_get_layout_offsets (GTK_LABEL (label), &x_layout, &y_layout);
label_text = gtk_label_get_text (GTK_LABEL (label));
index = g_utf8_offset_to_pointer (label_text, offset) - label_text;
pango_layout_index_to_pos (gtk_label_get_layout (GTK_LABEL (label)), index, &char_rect);
gail_misc_get_extents_from_pango_rectangle (label, &char_rect,
gail_misc_get_extents_from_pango_rectangle (label, &char_rect,
x_layout, y_layout, x, y, width, height, coords);
}
}
static gint
gail_menu_item_get_offset_at_point (AtkText *text,
@ -578,26 +561,23 @@ static gunichar
gail_menu_item_get_character_at_offset (AtkText *text,
gint offset)
{
GtkWidget *widget;
GtkWidget *label;
const gchar *string;
gchar *string;
gchar *index;
gunichar ch;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text));
if (widget == NULL)
/* State is defunct */
return '\0';
string = gail_menu_item_get_text (text, 0, -1);
label = get_label_from_container (widget);
if (string == NULL || offset >= g_utf8_strlen (string, -1))
ch = '\0';
else
{
index = g_utf8_offset_to_pointer (string, offset);
ch = g_utf8_get_char (index);
}
if (!GTK_IS_LABEL(label))
return '\0';
string = gtk_label_get_text (GTK_LABEL (label));
if (offset >= g_utf8_strlen (string, -1))
return '\0';
index = g_utf8_offset_to_pointer (string, offset);
g_free (string);
return g_utf8_get_char (index);
return ch;
}
static GtkWidget*
@ -616,8 +596,13 @@ get_label_from_container (GtkWidget *container)
{
if (GTK_IS_LABEL (tmp_list->data))
{
label = tmp_list->data;
break;
label = tmp_list->data;
break;
}
else if (GTK_IS_CELL_VIEW (tmp_list->data))
{
label = tmp_list->data;
break;
}
/*
* * Get label from menu item in desktop background preferences
@ -625,9 +610,9 @@ get_label_from_container (GtkWidget *container)
* */
else if (GTK_IS_BOX (tmp_list->data))
{
label = get_label_from_container (GTK_WIDGET (tmp_list->data));
if (label)
break;
label = get_label_from_container (GTK_WIDGET (tmp_list->data));
if (label)
break;
}
}
g_list_free (children);
@ -635,6 +620,49 @@ get_label_from_container (GtkWidget *container)
return label;
}
static gchar *
get_text_from_label_widget (GtkWidget *label)
{
if (GTK_IS_LABEL (label))
return g_strdup (gtk_label_get_text (GTK_LABEL (label)));
else if (GTK_IS_CELL_VIEW (label))
{
GList *cells, *l;
GtkTreeModel *model;
GtkTreeIter iter;
GtkTreePath *path;
GtkCellArea *area;
gchar *text;
model = gtk_cell_view_get_model (GTK_CELL_VIEW (label));
path = gtk_cell_view_get_displayed_row (GTK_CELL_VIEW (label));
gtk_tree_model_get_iter (model, &iter, path);
gtk_tree_path_free (path);
area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (label));
gtk_cell_area_apply_attributes (area, model, &iter, FALSE, FALSE);
cells = gtk_cell_layout_get_cells (GTK_CELL_LAYOUT (label));
for (l = cells; l; l = l->next)
{
GtkCellRenderer *cell = l->data;
if (GTK_IS_CELL_RENDERER_TEXT (cell))
{
g_object_get (cell, "text", &text, NULL);
break;
}
}
g_list_free (cells);
return text;
}
return NULL;
}
AtkObject*
gail_menu_item_new (GtkWidget *widget)
{