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gtk,scrolledwindow: Ensure the view snaps back when overshooting

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Instead of just stopping the acceleration source ID, check whether
it's overshooting, and let it snap back if needed after ::grab-notify
and ::button-release-event
This commit is contained in:
Carlos Garnacho
2012-01-04 23:58:13 +01:00
parent f17b2ebd30
commit f48fdd2b43
1 changed files with 13 additions and 22 deletions
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35
gtk/gtkscrolledwindow.c
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@@ -2351,24 +2351,6 @@ gtk_scrolled_window_cancel_deceleration (GtkScrolledWindow *scrolled_window)
g_source_remove (priv->deceleration_id);
priv->deceleration_id = 0;
}
/* Ensure the overshoot window is clamped to the adjustments' limits */
if (_gtk_scrolled_window_get_overshoot (scrolled_window, NULL, NULL))
{
GtkAdjustment *vadjustment, *hadjustment;
vadjustment = gtk_range_get_adjustment (GTK_RANGE (priv->vscrollbar));
hadjustment = gtk_range_get_adjustment (GTK_RANGE (priv->hscrollbar));
_gtk_scrolled_window_set_adjustment_value (scrolled_window,
vadjustment,
gtk_adjustment_get_value (vadjustment),
FALSE, TRUE);
_gtk_scrolled_window_set_adjustment_value (scrolled_window,
hadjustment,
gtk_adjustment_get_value (hadjustment),
FALSE, TRUE);
}
}
static void
@@ -2430,6 +2412,9 @@ gtk_scrolled_window_release_captured_event (GtkScrolledWindow *scrolled_window)
priv->button_press_event = NULL;
}
if (_gtk_scrolled_window_get_overshoot (scrolled_window, NULL, NULL))
gtk_scrolled_window_start_deceleration (scrolled_window);
return FALSE;
}
@@ -2476,6 +2461,7 @@ gtk_scrolled_window_captured_button_release (GtkWidget *widget,
GtkScrolledWindowPrivate *priv = scrolled_window->priv;
GtkWidget *child;
GdkEventButton *event;
gboolean overshoot;
event = (GdkEventButton *)_event;
@@ -2495,6 +2481,8 @@ gtk_scrolled_window_captured_button_release (GtkWidget *widget,
priv->release_timeout_id = 0;
}
overshoot = _gtk_scrolled_window_get_overshoot (scrolled_window, NULL, NULL);
if (priv->in_drag)
gdk_device_ungrab (event->device, event->time);
else
@@ -2504,7 +2492,8 @@ gtk_scrolled_window_captured_button_release (GtkWidget *widget,
*/
gtk_scrolled_window_release_captured_event (scrolled_window);
return FALSE;
if (!overshoot)
return FALSE;
}
priv->in_drag = FALSE;
@@ -2522,8 +2511,7 @@ gtk_scrolled_window_captured_button_release (GtkWidget *widget,
if (!priv->vscrollbar_visible)
priv->y_velocity = 0;
if (priv->x_velocity != 0 || priv->y_velocity != 0 ||
_gtk_scrolled_window_get_overshoot (scrolled_window, NULL, NULL))
if (priv->x_velocity != 0 || priv->y_velocity != 0 || overshoot)
{
gtk_scrolled_window_start_deceleration (scrolled_window);
priv->x_velocity = priv->y_velocity = 0;
@@ -3310,7 +3298,10 @@ gtk_scrolled_window_grab_notify (GtkWidget *widget,
priv->release_timeout_id = 0;
}
gtk_scrolled_window_cancel_deceleration (scrolled_window);
if (_gtk_scrolled_window_get_overshoot (scrolled_window, NULL, NULL))
gtk_scrolled_window_start_deceleration (scrolled_window);
else
gtk_scrolled_window_cancel_deceleration (scrolled_window);
priv->last_button_event_x_root = -TOUCH_BYPASS_CAPTURED_THRESHOLD;
priv->last_button_event_y_root = -TOUCH_BYPASS_CAPTURED_THRESHOLD;