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button: Handle touch events

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Touch events don't generate crossing events themselves, so
do not rely on these to determine whether the button release
happened within the event window.
This commit is contained in:
Carlos Garnacho 2012-01-05 00:35:04 +01:00 committed by Matthias Clasen
parent 518a579838
commit 2ccf29f6b3
1 changed files with 65 additions and 4 deletions
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63
gtk/gtkbutton.c
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@ -122,6 +122,8 @@ static gint gtk_button_button_press (GtkWidget * widget,
GdkEventButton * event);
static gint gtk_button_button_release (GtkWidget * widget,
GdkEventButton * event);
static gboolean gtk_button_touch (GtkWidget *widget,
GdkEventTouch *event);
static gint gtk_button_grab_broken (GtkWidget * widget,
GdkEventGrabBroken * event);
static gint gtk_button_key_release (GtkWidget * widget, GdkEventKey * event);
@ -207,6 +209,7 @@ gtk_button_class_init (GtkButtonClass *klass)
widget_class->draw = gtk_button_draw;
widget_class->button_press_event = gtk_button_button_press;
widget_class->button_release_event = gtk_button_button_release;
widget_class->touch_event = gtk_button_touch;
widget_class->grab_broken_event = gtk_button_grab_broken;
widget_class->key_release_event = gtk_button_key_release;
widget_class->enter_notify_event = gtk_button_enter_notify;
@ -1430,6 +1433,7 @@ gtk_button_realize (GtkWidget *widget)
attributes.event_mask = gtk_widget_get_events (widget);
attributes.event_mask |= (GDK_BUTTON_PRESS_MASK |
GDK_BUTTON_RELEASE_MASK |
GDK_TOUCH_MASK |
GDK_ENTER_NOTIFY_MASK |
GDK_LEAVE_NOTIFY_MASK);
@ -1841,6 +1845,28 @@ gtk_button_button_release (GtkWidget *widget,
return TRUE;
}
static gboolean
gtk_button_touch (GtkWidget *widget,
GdkEventTouch *event)
{
GtkButton *button = GTK_BUTTON (widget);
GtkButtonPrivate *priv = button->priv;
if (event->type == GDK_TOUCH_BEGIN)
{
if (priv->focus_on_click && !gtk_widget_has_focus (widget))
gtk_widget_grab_focus (widget);
g_signal_emit (button, button_signals[PRESSED], 0);
}
else if (event->type == GDK_TOUCH_END)
{
g_signal_emit (button, button_signals[RELEASED], 0);
}
return TRUE;
}
static gboolean
gtk_button_grab_broken (GtkWidget *widget,
GdkEventGrabBroken *event)
@ -1930,6 +1956,40 @@ gtk_real_button_pressed (GtkButton *button)
gtk_button_update_state (button);
}
static gboolean
touch_release_in_button (GtkButton *button)
{
GtkButtonPrivate *priv;
gint width, height;
GdkEvent *event;
gdouble x, y;
priv = button->priv;
event = gtk_get_current_event ();
if (!event)
return FALSE;
if (event->type != GDK_TOUCH_END ||
event->touch.window != priv->event_window)
{
gdk_event_free (event);
return FALSE;
}
gdk_event_get_coords (event, &x, &y);
width = gdk_window_get_width (priv->event_window);
height = gdk_window_get_height (priv->event_window);
gdk_event_free (event);
if (x >= 0 && x <= width &&
y >= 0 && y <= height)
return TRUE;
return FALSE;
}
static void
gtk_real_button_released (GtkButton *button)
{
@ -1942,7 +2002,8 @@ gtk_real_button_released (GtkButton *button)
if (priv->activate_timeout)
return;
if (priv->in_button)
if (priv->in_button ||
touch_release_in_button (button))
gtk_button_clicked (button);
gtk_button_update_state (button);