forked from AuroraMiddleware/gtk
Merge branch 'scrollbar-a11y' into 'master'
Add GtkScrollbarAccessible See merge request GNOME/gtk!1623
This commit is contained in:
Matthias Clasen
commit
e43eb951d6
290
gtk/a11y/gtkscrollbaraccessible.c
Normal file
290
gtk/a11y/gtkscrollbaraccessible.c
Normal file
@ -0,0 +1,290 @@
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/* GTK+ - accessibility implementations
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* Copyright 2001, 2002, 2003 Sun Microsystems Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <string.h>
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#include <gtk/gtk.h>
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#include "gtkscrollbaraccessible.h"
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struct _GtkScrollbarAccessiblePrivate
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{
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GtkAdjustment *adjustment;
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};
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static void atk_value_interface_init (AtkValueIface *iface);
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G_DEFINE_TYPE_WITH_CODE (GtkScrollbarAccessible, gtk_scrollbar_accessible, GTK_TYPE_WIDGET_ACCESSIBLE,
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G_ADD_PRIVATE (GtkScrollbarAccessible)
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G_IMPLEMENT_INTERFACE (ATK_TYPE_VALUE, atk_value_interface_init))
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static void
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gtk_scrollbar_accessible_value_changed (GtkAdjustment *adjustment,
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gpointer data)
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{
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g_object_notify (G_OBJECT (data), "accessible-value");
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}
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static void
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gtk_scrollbar_accessible_widget_set (GtkAccessible *accessible)
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{
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GtkScrollbarAccessiblePrivate *priv = GTK_SCROLLBAR_ACCESSIBLE (accessible)->priv;
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GtkWidget *scrollbar;
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GtkAdjustment *adj;
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scrollbar = gtk_accessible_get_widget (accessible);
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adj = gtk_scrollbar_get_adjustment (GTK_SCROLLBAR (scrollbar));
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if (adj)
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{
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priv->adjustment = adj;
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g_object_ref (priv->adjustment);
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g_signal_connect (priv->adjustment, "value-changed",
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G_CALLBACK (gtk_scrollbar_accessible_value_changed),
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accessible);
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}
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}
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static void
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gtk_scrollbar_accessible_widget_unset (GtkAccessible *accessible)
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{
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GtkScrollbarAccessiblePrivate *priv = GTK_SCROLLBAR_ACCESSIBLE (accessible)->priv;
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if (priv->adjustment)
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{
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g_signal_handlers_disconnect_by_func (priv->adjustment,
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G_CALLBACK (gtk_scrollbar_accessible_value_changed),
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accessible);
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g_object_unref (priv->adjustment);
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priv->adjustment = NULL;
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}
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}
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static void
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gtk_scrollbar_accessible_initialize (AtkObject *obj,
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gpointer data)
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{
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ATK_OBJECT_CLASS (gtk_scrollbar_accessible_parent_class)->initialize (obj, data);
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obj->role = ATK_ROLE_SCROLL_BAR;
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}
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static void
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gtk_scrollbar_accessible_notify_gtk (GObject *obj,
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GParamSpec *pspec)
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{
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GtkWidget *widget = GTK_WIDGET (obj);
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AtkObject *scrollbar;
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if (strcmp (pspec->name, "adjustment") == 0)
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{
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scrollbar = gtk_widget_get_accessible (widget);
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gtk_scrollbar_accessible_widget_unset (GTK_ACCESSIBLE (scrollbar));
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gtk_scrollbar_accessible_widget_set (GTK_ACCESSIBLE (scrollbar));
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}
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else
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GTK_WIDGET_ACCESSIBLE_CLASS (gtk_scrollbar_accessible_parent_class)->notify_gtk (obj, pspec);
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}
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static void
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gtk_scrollbar_accessible_class_init (GtkScrollbarAccessibleClass *klass)
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{
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AtkObjectClass *class = ATK_OBJECT_CLASS (klass);
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GtkAccessibleClass *accessible_class = (GtkAccessibleClass*)klass;
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GtkWidgetAccessibleClass *widget_class = (GtkWidgetAccessibleClass*)klass;
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class->initialize = gtk_scrollbar_accessible_initialize;
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accessible_class->widget_set = gtk_scrollbar_accessible_widget_set;
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accessible_class->widget_unset = gtk_scrollbar_accessible_widget_unset;
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widget_class->notify_gtk = gtk_scrollbar_accessible_notify_gtk;
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}
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static void
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gtk_scrollbar_accessible_init (GtkScrollbarAccessible *scrollbar)
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{
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scrollbar->priv = gtk_scrollbar_accessible_get_instance_private (scrollbar);
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}
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static void
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gtk_scrollbar_accessible_get_current_value (AtkValue *obj,
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GValue *value)
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{
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GtkWidget *widget;
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GtkAdjustment *adjustment;
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widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
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adjustment = gtk_scrollbar_get_adjustment (GTK_SCROLLBAR (widget));
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if (adjustment == NULL)
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return;
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memset (value, 0, sizeof (GValue));
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g_value_init (value, G_TYPE_DOUBLE);
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g_value_set_double (value, gtk_adjustment_get_value (adjustment));
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}
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static void
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gtk_scrollbar_accessible_get_maximum_value (AtkValue *obj,
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GValue *value)
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{
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GtkWidget *widget;
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GtkAdjustment *adjustment;
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double max;
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widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
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adjustment = gtk_scrollbar_get_adjustment (GTK_SCROLLBAR (widget));
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if (adjustment == NULL)
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return;
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max = gtk_adjustment_get_upper (adjustment)
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- gtk_adjustment_get_page_size (adjustment);
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memset (value, 0, sizeof (GValue));
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g_value_init (value, G_TYPE_DOUBLE);
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g_value_set_double (value, max);
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}
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static void
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gtk_scrollbar_accessible_get_minimum_value (AtkValue *obj,
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GValue *value)
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{
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GtkWidget *widget;
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GtkAdjustment *adjustment;
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widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
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adjustment = gtk_scrollbar_get_adjustment (GTK_SCROLLBAR (widget));
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if (adjustment == NULL)
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return;
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memset (value, 0, sizeof (GValue));
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g_value_init (value, G_TYPE_DOUBLE);
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g_value_set_double (value, gtk_adjustment_get_lower (adjustment));
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}
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static void
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gtk_scrollbar_accessible_get_minimum_increment (AtkValue *obj,
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GValue *value)
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{
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GtkWidget *widget;
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GtkAdjustment *adjustment;
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widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
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adjustment = gtk_scrollbar_get_adjustment (GTK_SCROLLBAR (widget));
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if (adjustment == NULL)
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return;
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memset (value, 0, sizeof (GValue));
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g_value_init (value, G_TYPE_DOUBLE);
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g_value_set_double (value, gtk_adjustment_get_minimum_increment (adjustment));
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}
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static gboolean
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gtk_scrollbar_accessible_set_current_value (AtkValue *obj,
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const GValue *value)
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{
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GtkWidget *widget;
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GtkAdjustment *adjustment;
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widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
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adjustment = gtk_scrollbar_get_adjustment (GTK_SCROLLBAR (widget));
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if (adjustment == NULL)
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return FALSE;
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gtk_adjustment_set_value (adjustment, g_value_get_double (value));
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return TRUE;
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}
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static void
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gtk_scrollbar_accessible_get_value_and_text (AtkValue *obj,
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double *value,
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char **text)
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{
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GtkWidget *widget;
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GtkAdjustment *adjustment;
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widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
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adjustment = gtk_scrollbar_get_adjustment (GTK_SCROLLBAR (widget));
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if (adjustment == NULL)
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return;
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*value = gtk_adjustment_get_value (adjustment);
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*text = NULL;
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}
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static AtkRange *
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gtk_scrollbar_accessible_get_range (AtkValue *obj)
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{
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GtkWidget *widget;
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GtkAdjustment *adjustment;
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double min, max;
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widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
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adjustment = gtk_scrollbar_get_adjustment (GTK_SCROLLBAR (widget));
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if (adjustment == NULL)
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return NULL;
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min = gtk_adjustment_get_lower (adjustment);
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max = gtk_adjustment_get_upper (adjustment)
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- gtk_adjustment_get_page_size (adjustment);
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return atk_range_new (min, max, NULL);
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}
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static void
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gtk_scrollbar_accessible_set_value (AtkValue *obj,
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const double value)
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{
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GtkWidget *widget;
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GtkAdjustment *adjustment;
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widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
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adjustment = gtk_scrollbar_get_adjustment (GTK_SCROLLBAR (widget));
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if (adjustment == NULL)
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return;
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gtk_adjustment_set_value (adjustment, value);
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}
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static double
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gtk_scrollbar_accessible_get_increment (AtkValue *obj)
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{
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GtkWidget *widget;
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GtkAdjustment *adjustment;
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widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
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adjustment = gtk_scrollbar_get_adjustment (GTK_SCROLLBAR (widget));
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if (adjustment == NULL)
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return 0;
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return gtk_adjustment_get_minimum_increment (adjustment);
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}
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static void
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atk_value_interface_init (AtkValueIface *iface)
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{
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iface->get_current_value = gtk_scrollbar_accessible_get_current_value;
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iface->get_maximum_value = gtk_scrollbar_accessible_get_maximum_value;
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iface->get_minimum_value = gtk_scrollbar_accessible_get_minimum_value;
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iface->get_minimum_increment = gtk_scrollbar_accessible_get_minimum_increment;
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iface->set_current_value = gtk_scrollbar_accessible_set_current_value;
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iface->get_value_and_text = gtk_scrollbar_accessible_get_value_and_text;
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iface->get_range = gtk_scrollbar_accessible_get_range;
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iface->set_value = gtk_scrollbar_accessible_set_value;
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iface->get_increment = gtk_scrollbar_accessible_get_increment;
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}
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57
gtk/a11y/gtkscrollbaraccessible.h
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57
gtk/a11y/gtkscrollbaraccessible.h
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@ -0,0 +1,57 @@
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/* GTK+ - accessibility implementations
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* Copyright 2001 Sun Microsystems Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __GTK_SCROLLBAR_ACCESSIBLE_H__
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#define __GTK_SCROLLBAR_ACCESSIBLE_H__
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#if !defined (__GTK_A11Y_H_INSIDE__) && !defined (GTK_COMPILATION)
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#error "Only <gtk/gtk-a11y.h> can be included directly."
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#endif
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#include <gtk/a11y/gtkwidgetaccessible.h>
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G_BEGIN_DECLS
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#define GTK_TYPE_SCROLLBAR_ACCESSIBLE (gtk_scrollbar_accessible_get_type ())
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#define GTK_SCROLLBAR_ACCESSIBLE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_SCROLLBAR_ACCESSIBLE, GtkScrollbarAccessible))
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#define GTK_SCROLLBAR_ACCESSIBLE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_SCROLLBAR_ACCESSIBLE, GtkScrollbarAccessibleClass))
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#define GTK_IS_SCROLLBAR_ACCESSIBLE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_SCROLLBAR_ACCESSIBLE))
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#define GTK_IS_SCROLLBAR_ACCESSIBLE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_SCROLLBAR_ACCESSIBLE))
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#define GTK_SCROLLBAR_ACCESSIBLE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_SCROLLBAR_ACCESSIBLE, GtkScrollbarAccessibleClass))
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typedef struct _GtkScrollbarAccessible GtkScrollbarAccessible;
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typedef struct _GtkScrollbarAccessibleClass GtkScrollbarAccessibleClass;
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typedef struct _GtkScrollbarAccessiblePrivate GtkScrollbarAccessiblePrivate;
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struct _GtkScrollbarAccessible
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{
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GtkWidgetAccessible parent;
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GtkScrollbarAccessiblePrivate *priv;
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};
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struct _GtkScrollbarAccessibleClass
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{
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GtkWidgetAccessibleClass parent_class;
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};
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GDK_AVAILABLE_IN_ALL
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GType gtk_scrollbar_accessible_get_type (void);
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G_END_DECLS
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#endif /* __GTK_SCROLLBAR_ACCESSIBLE_H__ */
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@ -36,6 +36,7 @@ a11y_sources = files([
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'gtkrenderercellaccessible.c',
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'gtkscaleaccessible.c',
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'gtkscalebuttonaccessible.c',
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'gtkscrollbaraccessible.c',
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'gtkscrolledwindowaccessible.c',
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'gtkspinbuttonaccessible.c',
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'gtkspinneraccessible.c',
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@ -87,6 +88,7 @@ a11y_headers = files([
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'gtkrenderercellaccessible.h',
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'gtkscaleaccessible.h',
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'gtkscalebuttonaccessible.h',
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'gtkscrollbaraccessible.h',
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'gtkscrolledwindowaccessible.h',
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'gtkspinbuttonaccessible.h',
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'gtkspinneraccessible.h',
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@ -62,6 +62,7 @@
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#include <gtk/a11y/gtkscaleaccessible.h>
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#include <gtk/a11y/gtkscalebuttonaccessible.h>
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#include <gtk/a11y/gtkscrolledwindowaccessible.h>
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#include <gtk/a11y/gtkscrollbaraccessible.h>
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#include <gtk/a11y/gtkspinbuttonaccessible.h>
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#include <gtk/a11y/gtkspinneraccessible.h>
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#include <gtk/a11y/gtkstackaccessible.h>
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@ -35,6 +35,8 @@
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#include "gtkprivate.h"
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#include "gtkboxlayout.h"
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#include "a11y/gtkscrollbaraccessible.h"
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/**
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* SECTION:gtkscrollbar
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@ -204,7 +206,7 @@ gtk_scrollbar_class_init (GtkScrollbarClass *class)
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g_object_class_override_property (object_class, PROP_ORIENTATION, "orientation");
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gtk_widget_class_set_accessible_role (widget_class, ATK_ROLE_SCROLL_BAR);
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gtk_widget_class_set_accessible_type (widget_class, GTK_TYPE_SCROLLBAR_ACCESSIBLE);
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gtk_widget_class_set_css_name (widget_class, I_("scrollbar"));
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gtk_widget_class_set_layout_manager_type (widget_class, GTK_TYPE_BOX_LAYOUT);
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}
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@ -283,5 +285,8 @@ gtk_scrollbar_get_adjustment (GtkScrollbar *self)
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g_return_val_if_fail (GTK_IS_SCROLLBAR (self), NULL);
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return gtk_range_get_adjustment (GTK_RANGE (priv->range));
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if (priv->range)
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return gtk_range_get_adjustment (GTK_RANGE (priv->range));
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return NULL;
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}
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@ -41,8 +41,12 @@ window1
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"scroll bar"
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parent: grid1
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index: 1
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state: enabled horizontal sensitive showing visible
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state: enabled focusable horizontal sensitive showing visible
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toolkit: gtk
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<AtkComponent>
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layer: widget
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alpha: 1
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<AtkValue>
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minimum value: 0.500000
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maximum value: 99.500000
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current value: 45.500000
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