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st-button: Handle touch events

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On touch events, StButton becomes locked to a single sequence, so no multiple
touches can trigger it simultaneously.

https://bugzilla.gnome.org/show_bug.cgi?id=733633
This commit is contained in:
Carlos Garnacho 2014-07-22 12:23:25 +02:00
parent ce5cd3bf30
commit a2f263dcbb
1 changed files with 91 additions and 19 deletions
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100
src/st/st-button.c
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@ -71,6 +71,9 @@ struct _StButtonPrivate
{
gchar *text;
ClutterInputDevice *device;
ClutterEventSequence *press_sequence;
guint button_mask : 3;
guint is_toggle : 1;
@ -128,26 +131,41 @@ st_button_style_changed (StWidget *widget)
static void
st_button_press (StButton *button,
StButtonMask mask)
ClutterInputDevice *device,
StButtonMask mask,
ClutterEventSequence *sequence)
{
if (button->priv->pressed == 0)
if (button->priv->pressed == 0 || sequence)
st_widget_add_style_pseudo_class (ST_WIDGET (button), "active");
button->priv->pressed |= mask;
button->priv->press_sequence = sequence;
button->priv->device = device;
}
static void
st_button_release (StButton *button,
ClutterInputDevice *device,
StButtonMask mask,
int clicked_button)
int clicked_button,
ClutterEventSequence *sequence)
{
if ((device && button->priv->device != device) ||
(sequence && button->priv->press_sequence != sequence))
return;
else if (!sequence)
{
button->priv->pressed &= ~mask;
if (button->priv->pressed != 0)
return;
}
button->priv->press_sequence = NULL;
button->priv->device = NULL;
st_widget_remove_style_pseudo_class (ST_WIDGET (button), "active");
if (clicked_button)
if (clicked_button || sequence)
{
if (button->priv->is_toggle)
st_button_set_checked (button, !button->priv->is_checked);
@ -162,6 +180,10 @@ st_button_button_press (ClutterActor *actor,
{
StButton *button = ST_BUTTON (actor);
StButtonMask mask = ST_BUTTON_MASK_FROM_BUTTON (event->button);
ClutterInputDevice *device = clutter_event_get_device ((ClutterEvent*) event);
if (button->priv->press_sequence)
return CLUTTER_EVENT_PROPAGATE;
if (button->priv->button_mask & mask)
{
@ -169,7 +191,7 @@ st_button_button_press (ClutterActor *actor,
clutter_grab_pointer (actor);
button->priv->grabbed |= mask;
st_button_press (button, mask);
st_button_press (button, device, mask, NULL);
return TRUE;
}
@ -183,13 +205,14 @@ st_button_button_release (ClutterActor *actor,
{
StButton *button = ST_BUTTON (actor);
StButtonMask mask = ST_BUTTON_MASK_FROM_BUTTON (event->button);
ClutterInputDevice *device = clutter_event_get_device ((ClutterEvent*) event);
if (button->priv->button_mask & mask)
{
gboolean is_click;
is_click = button->priv->grabbed && st_widget_get_hover (ST_WIDGET (button));
st_button_release (button, mask, is_click ? event->button : 0);
st_button_release (button, device, mask, is_click ? event->button : 0, NULL);
button->priv->grabbed &= ~mask;
if (button->priv->grabbed == 0)
@ -201,6 +224,39 @@ st_button_button_release (ClutterActor *actor,
return FALSE;
}
static gboolean
st_button_touch_event (ClutterActor *actor,
ClutterTouchEvent *event)
{
StButton *button = ST_BUTTON (actor);
StButtonMask mask = ST_BUTTON_MASK_FROM_BUTTON (1);
ClutterEventSequence *sequence;
ClutterInputDevice *device;
if (button->priv->pressed != 0)
return CLUTTER_EVENT_PROPAGATE;
device = clutter_event_get_device ((ClutterEvent*) event);
sequence = clutter_event_get_event_sequence ((ClutterEvent*) event);
if (event->type == CLUTTER_TOUCH_BEGIN && !button->priv->press_sequence)
{
clutter_input_device_sequence_grab (device, sequence, actor);
st_button_press (button, device, 0, sequence);
return CLUTTER_EVENT_STOP;
}
else if (event->type == CLUTTER_TOUCH_END &&
button->priv->device == device &&
button->priv->press_sequence == sequence)
{
st_button_release (button, device, mask, 0, sequence);
clutter_input_device_sequence_ungrab (device, sequence);
return CLUTTER_EVENT_STOP;
}
return CLUTTER_EVENT_PROPAGATE;
}
static gboolean
st_button_key_press (ClutterActor *actor,
ClutterKeyEvent *event)
@ -213,7 +269,7 @@ st_button_key_press (ClutterActor *actor,
event->keyval == CLUTTER_KEY_Return ||
event->keyval == CLUTTER_KEY_KP_Enter)
{
st_button_press (button, ST_BUTTON_ONE);
st_button_press (button, NULL, ST_BUTTON_ONE, NULL);
return TRUE;
}
}
@ -236,7 +292,7 @@ st_button_key_release (ClutterActor *actor,
gboolean is_click;
is_click = (button->priv->pressed & ST_BUTTON_ONE);
st_button_release (button, ST_BUTTON_ONE, is_click ? 1 : 0);
st_button_release (button, NULL, ST_BUTTON_ONE, is_click ? 1 : 0, NULL);
return TRUE;
}
}
@ -252,7 +308,7 @@ st_button_key_focus_out (ClutterActor *actor)
/* If we lose focus between a key press and release, undo the press */
if ((button->priv->pressed & ST_BUTTON_ONE) &&
!(button->priv->grabbed & ST_BUTTON_ONE))
st_button_release (button, ST_BUTTON_ONE, 0);
st_button_release (button, NULL, ST_BUTTON_ONE, 0, NULL);
CLUTTER_ACTOR_CLASS (st_button_parent_class)->key_focus_out (actor);
}
@ -269,9 +325,11 @@ st_button_enter (ClutterActor *actor,
if (button->priv->grabbed)
{
if (st_widget_get_hover (ST_WIDGET (button)))
st_button_press (button, button->priv->grabbed);
st_button_press (button, button->priv->device,
button->priv->grabbed, NULL);
else
st_button_release (button, button->priv->grabbed, 0);
st_button_release (button, button->priv->device,
button->priv->grabbed, 0, NULL);
}
return ret;
@ -289,9 +347,11 @@ st_button_leave (ClutterActor *actor,
if (button->priv->grabbed)
{
if (st_widget_get_hover (ST_WIDGET (button)))
st_button_press (button, button->priv->grabbed);
st_button_press (button, button->priv->device,
button->priv->grabbed, NULL);
else
st_button_release (button, button->priv->grabbed, 0);
st_button_release (button, button->priv->device,
button->priv->grabbed, 0, NULL);
}
return ret;
@ -391,6 +451,7 @@ st_button_class_init (StButtonClass *klass)
actor_class->key_focus_out = st_button_key_focus_out;
actor_class->enter_event = st_button_enter;
actor_class->leave_event = st_button_leave;
actor_class->touch_event = st_button_touch_event;
widget_class->style_changed = st_button_style_changed;
widget_class->get_accessible_type = st_button_accessible_get_type;
@ -679,13 +740,24 @@ void
st_button_fake_release (StButton *button)
{
if (button->priv->pressed)
st_button_release (button, button->priv->pressed, 0);
st_button_release (button, button->priv->device,
button->priv->pressed, 0, NULL);
if (button->priv->grabbed)
{
button->priv->grabbed = 0;
clutter_ungrab_pointer ();
}
if (button->priv->device &&
button->priv->press_sequence)
{
clutter_input_device_sequence_ungrab (button->priv->device,
button->priv->press_sequence);
button->priv->press_sequence = NULL;
}
button->priv->device = NULL;
}
/******************************************************************************/