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eventcontrollerscroll: Conditionally propagate ::scroll

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Currently, gtk_event_controller_scroll_handle_event() always returns
TRUE if it is handled, which stops the propagation of the event. If
there’s a single GtkEventControllerScroll in the widget hierarchy, that
means that no others will run, depending on the propagation phase. In
Nautilus, this can be observed when adding a scroll controller to the
GtkScrolledWindow (ctrl-scrolling controls the zoom level) - either the
scrolling or the zooming breaks.

Fixes https://gitlab.gnome.org/GNOME/gtk/issues/45
This commit is contained in:
Ernestas Kulik 2018-07-18 16:34:39 +03:00 committed by Ernestas Kulik
parent c2c1acc73e
commit edc4b2f7d0
11 changed files with 51 additions and 29 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
gtk/gtkcalendar.c
View File

@ -338,10 +338,10 @@ static gint calendar_get_xsep (GtkCalendar *calendar);
static gint calendar_get_ysep (GtkCalendar *calendar);
static gint calendar_get_inner_border (GtkCalendar *calendar);
static void gtk_calendar_scroll_controller_scroll (GtkEventControllerScroll *scroll,
gdouble dx,
gdouble dy,
GtkWidget *widget);
static gboolean gtk_calendar_scroll_controller_scroll (GtkEventControllerScroll *scroll,
gdouble dx,
gdouble dy,
GtkWidget *widget);
static char *default_abbreviated_dayname[7];
static char *default_monthname[12];
@ -2684,7 +2684,7 @@ gtk_calendar_drag_update (GtkGestureDrag *gesture,
gtk_drag_set_icon_default (drag);
}
static void
static gboolean
gtk_calendar_scroll_controller_scroll (GtkEventControllerScroll *scroll,
gdouble dx,
gdouble dy,
@ -2699,6 +2699,8 @@ gtk_calendar_scroll_controller_scroll (GtkEventControllerScroll *scroll,
calendar_set_month_prev (calendar);
else if (dy > 0)
calendar_set_month_next (calendar);
return GDK_EVENT_STOP;
}

8
gtk/gtkcombobox.c
View File

@ -249,7 +249,7 @@ static void gtk_combo_box_real_move_active (GtkComboBox *combo_box,
static void gtk_combo_box_real_popup (GtkComboBox *combo_box);
static gboolean gtk_combo_box_real_popdown (GtkComboBox *combo_box);
static void gtk_combo_box_scroll_controller_scroll (GtkEventControllerScroll *scroll,
static gboolean gtk_combo_box_scroll_controller_scroll (GtkEventControllerScroll *scroll,
gdouble dx,
gdouble dy,
GtkComboBox *combo_box);
@ -1801,7 +1801,7 @@ tree_first (GtkComboBox *combo,
return search_data.set;
}
static void
static gboolean
gtk_combo_box_scroll_controller_scroll (GtkEventControllerScroll *scroll,
gdouble dx,
gdouble dy,
@ -1813,7 +1813,7 @@ gtk_combo_box_scroll_controller_scroll (GtkEventControllerScroll *scroll,
GtkTreeIter new_iter;
if (!gtk_combo_box_get_active_iter (combo_box, &iter))
return;
return GDK_EVENT_PROPAGATE;
if (dy < 0)
found = tree_prev (combo_box, priv->model, &iter, &new_iter);
@ -1823,6 +1823,8 @@ gtk_combo_box_scroll_controller_scroll (GtkEventControllerScroll *scroll,
if (found)
gtk_combo_box_set_active_iter (combo_box, &new_iter);
return found;
}
/* callbacks */

13
gtk/gtkeventcontrollerscroll.c
View File

@ -243,6 +243,7 @@ gtk_event_controller_scroll_handle_event (GtkEventController *controller,
GtkEventControllerScroll *scroll = GTK_EVENT_CONTROLLER_SCROLL (controller);
GdkScrollDirection direction = GDK_SCROLL_SMOOTH;
gdouble dx = 0, dy = 0;
gboolean handled = TRUE;
if (gdk_event_get_event_type (event) != GDK_SCROLL)
return FALSE;
@ -324,7 +325,7 @@ gtk_event_controller_scroll_handle_event (GtkEventController *controller,
if (dx != 0 || dy != 0)
{
g_signal_emit (controller, signals[SCROLL], 0, dx, dy);
g_signal_emit (controller, signals[SCROLL], 0, dx, dy, &handled);
if (scroll->flags & GTK_EVENT_CONTROLLER_SCROLL_KINETIC)
scroll_history_push (scroll, dx, dy, gdk_event_get_time (event));
@ -344,7 +345,7 @@ gtk_event_controller_scroll_handle_event (GtkEventController *controller,
}
}
return TRUE;
return handled;
}
static void
@ -394,14 +395,16 @@ gtk_event_controller_scroll_class_init (GtkEventControllerScrollClass *klass)
*
* Signals that the widget should scroll by the
* amount specified by @dx and @dy.
*
* Returns: %TRUE if the scroll event was handled, %FALSE otherwise.
**/
signals[SCROLL] =
g_signal_new (I_("scroll"),
GTK_TYPE_EVENT_CONTROLLER_SCROLL,
G_SIGNAL_RUN_FIRST,
G_SIGNAL_RUN_LAST,
0, NULL, NULL,
_gtk_marshal_VOID__DOUBLE_DOUBLE,
G_TYPE_NONE, 2, G_TYPE_DOUBLE, G_TYPE_DOUBLE);
_gtk_marshal_BOOLEAN__DOUBLE_DOUBLE,
G_TYPE_BOOLEAN, 2, G_TYPE_DOUBLE, G_TYPE_DOUBLE);
/**
* GtkEventControllerScroll::scroll-end:
* @controller: The object that received the signal

1
gtk/gtkmarshalers.list
View File

@ -23,6 +23,7 @@
BOOLEAN:BOXED
BOOLEAN:BOXED,BOXED
BOOLEAN:DOUBLE,DOUBLE
BOOLEAN:ENUM
BOOLEAN:ENUM,BOOLEAN
BOOLEAN:ENUM,DOUBLE

6
gtk/gtkmenu.c
View File

@ -247,7 +247,7 @@ static void gtk_menu_grab_notify (GtkWidget *widget,
static gboolean gtk_menu_captured_event (GtkWidget *widget,
GdkEvent *event);
static void gtk_menu_scroll_controller_scroll (GtkEventControllerScroll *scroll,
static gboolean gtk_menu_scroll_controller_scroll (GtkEventControllerScroll *scroll,
gdouble dx,
gdouble dy,
GtkMenu *menu);
@ -3062,13 +3062,15 @@ gtk_menu_scroll_timeout (gpointer data)
return TRUE;
}
static void
static gboolean
gtk_menu_scroll_controller_scroll (GtkEventControllerScroll *scroll,
gdouble dx,
gdouble dy,
GtkMenu *menu)
{
gtk_menu_scroll_by (menu, dy * MENU_SCROLL_STEP2);
return GDK_EVENT_STOP;
}
static void

12
gtk/gtkpathbar.c
View File

@ -157,10 +157,10 @@ static void gtk_path_bar_update_button_appearance (GtkPathBar *path_bar,
ButtonData *button_data,
gboolean current_dir);
static void gtk_path_bar_scroll_controller_scroll (GtkEventControllerScroll *scroll,
gdouble dx,
gdouble dy,
GtkPathBar *path_bar);
static gboolean gtk_path_bar_scroll_controller_scroll (GtkEventControllerScroll *scroll,
gdouble dx,
gdouble dy,
GtkPathBar *path_bar);
static void
add_cancellable (GtkPathBar *path_bar,
@ -740,7 +740,7 @@ gtk_path_bar_display_changed (GtkWidget *widget,
gtk_path_bar_check_icon_theme (GTK_PATH_BAR (widget));
}
static void
static gboolean
gtk_path_bar_scroll_controller_scroll (GtkEventControllerScroll *scroll,
gdouble dx,
gdouble dy,
@ -750,6 +750,8 @@ gtk_path_bar_scroll_controller_scroll (GtkEventControllerScroll *scroll,
gtk_path_bar_scroll_down (path_bar);
else if (dy < 0)
gtk_path_bar_scroll_up (path_bar);
return GDK_EVENT_STOP;
}
static void

6
gtk/gtkrange.c
View File

@ -235,7 +235,7 @@ static void gtk_range_allocate_trough (GtkGizmo *gi
static gboolean gtk_range_render_trough (GtkGizmo *gizmo,
GtkSnapshot *snapshot);
static void gtk_range_scroll_controller_scroll (GtkEventControllerScroll *scroll,
static gboolean gtk_range_scroll_controller_scroll (GtkEventControllerScroll *scroll,
gdouble dx,
gdouble dy,
GtkRange *range);
@ -2226,7 +2226,7 @@ stop_scrolling (GtkRange *range)
remove_autoscroll (range);
}
static void
static gboolean
gtk_range_scroll_controller_scroll (GtkEventControllerScroll *scroll,
gdouble dx,
gdouble dy,
@ -2260,6 +2260,8 @@ gtk_range_scroll_controller_scroll (GtkEventControllerScroll *scroll,
g_signal_emit (range, signals[CHANGE_VALUE], 0,
GTK_SCROLL_JUMP, gtk_adjustment_get_value (priv->adjustment) + delta,
&handled);
return GDK_EVENT_STOP;
}
static void

6
gtk/gtkscalebutton.c
View File

@ -149,7 +149,7 @@ static void cb_scale_value_changed (GtkRange *range,
static void cb_popup_mapped (GtkWidget *popup,
gpointer user_data);
static void gtk_scale_button_scroll_controller_scroll (GtkEventControllerScroll *scroll,
static gboolean gtk_scale_button_scroll_controller_scroll (GtkEventControllerScroll *scroll,
gdouble dx,
gdouble dy,
GtkScaleButton *button);
@ -765,7 +765,7 @@ gtk_scale_button_set_orientation_private (GtkScaleButton *button,
}
}
static void
static gboolean
gtk_scale_button_scroll_controller_scroll (GtkEventControllerScroll *scroll,
gdouble dx,
gdouble dy,
@ -783,6 +783,8 @@ gtk_scale_button_scroll_controller_scroll (GtkEventControllerScroll *scroll,
gtk_adjustment_get_upper (adjustment));
gtk_scale_button_set_value (button, d);
return GDK_EVENT_STOP;
}
/*

6
gtk/gtkscrolledwindow.c
View File

@ -1252,7 +1252,7 @@ scroll_controller_scroll_begin (GtkEventControllerScroll *scroll,
priv->smooth_scroll = TRUE;
}
static void
static gboolean
scroll_controller_scroll (GtkEventControllerScroll *scroll,
gdouble delta_x,
gdouble delta_y,
@ -1263,7 +1263,7 @@ scroll_controller_scroll (GtkEventControllerScroll *scroll,
GdkModifierType state;
if (!gtk_get_current_event_state (&state))
return;
return GDK_EVENT_PROPAGATE;
shifted = (state & GDK_SHIFT_MASK) != 0;
@ -1322,6 +1322,8 @@ scroll_controller_scroll (GtkEventControllerScroll *scroll,
g_source_set_name_by_id (priv->scroll_events_overshoot_id,
"[gtk+] start_scroll_deceleration_cb");
}
return GDK_EVENT_STOP;
}
static void

4
gtk/gtkspinbutton.c
View File

@ -689,7 +689,7 @@ swipe_gesture_update (GtkGesture *gesture,
gtk_spin_button_real_spin (spin_button, -vel_y / 20);
}
static void
static gboolean
scroll_controller_scroll (GtkEventControllerScroll *Scroll,
gdouble dx,
gdouble dy,
@ -701,6 +701,8 @@ scroll_controller_scroll (GtkEventControllerScroll *Scroll,
if (!gtk_widget_has_focus (widget))
gtk_widget_grab_focus (widget);
gtk_spin_button_real_spin (spin, -dy * gtk_adjustment_get_step_increment (priv->adjustment));
return GDK_EVENT_STOP;
}
static gboolean

6
gtk/gtktreeview.c
View File

@ -811,7 +811,7 @@ static void gtk_tree_view_search_pressed_cb (GtkGesture *gestu
double x,
double y,
GtkTreeView *tree_view);
static void gtk_tree_view_search_scroll_event (GtkWidget *entry,
static gboolean gtk_tree_view_search_scroll_event (GtkWidget *entry,
gdouble dx,
gdouble dy,
GtkTreeView *tree_view);
@ -13914,7 +13914,7 @@ gtk_tree_view_search_pressed_cb (GtkGesture *gesture,
gtk_tree_view_search_window_hide (widget, tree_view, keyb_device);
}
static void
static gboolean
gtk_tree_view_search_scroll_event (GtkWidget *widget,
gdouble dx,
gdouble dy,
@ -13940,6 +13940,8 @@ gtk_tree_view_search_scroll_event (GtkWidget *widget,
tree_view);
g_source_set_name_by_id (tree_view->priv->typeselect_flush_timeout, "[gtk+] gtk_tree_view_search_entry_flush_timeout");
}
return GDK_EVENT_STOP;
}
static gboolean