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gtkscrolledwindow: Consider shift key presses when decelerating

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Otherwise horizontal scrolling using the shift key would decelerate
vertically.

Fixes https://gitlab.gnome.org/GNOME/gtk/issues/770
This commit is contained in:
Sebastian Keller 2018-08-04 16:24:33 +02:00
parent 35829a7272
commit 14b21d78db
1 changed files with 20 additions and 3 deletions
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23
gtk/gtkscrolledwindow.c
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@ -1341,12 +1341,29 @@ scroll_controller_decelerate (GtkEventControllerScroll *scroll,
GtkScrolledWindow *scrolled_window)
{
gdouble unit_x, unit_y;
gboolean shifted;
GdkModifierType state;
if (!gtk_get_current_event_state (&state))
return;
shifted = (state & GDK_SHIFT_MASK) != 0;
unit_x = get_scroll_unit (scrolled_window, GTK_ORIENTATION_HORIZONTAL);
unit_y = get_scroll_unit (scrolled_window, GTK_ORIENTATION_VERTICAL);
gtk_scrolled_window_decelerate (scrolled_window,
initial_vel_x * unit_x,
initial_vel_y * unit_y);
if (shifted)
{
gtk_scrolled_window_decelerate (scrolled_window,
initial_vel_y * unit_x,
initial_vel_x * unit_y);
}
else
{
gtk_scrolled_window_decelerate (scrolled_window,
initial_vel_x * unit_x,
initial_vel_y * unit_y);
}
}
static void