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st: Add rudimentary support for CLUTTER_SCROLL_SMOOTH events

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Currently compilation fails with -Werror, as we don't handle the
(newly introduced) smooth scroll events in switch statements; add
some basic support, which should make the compiler happy.

https://bugzilla.gnome.org/show_bug.cgi?id=672413
This commit is contained in:
Florian Müllner 2012-03-19 21:30:09 +01:00
parent 369c1b0a41
commit a7d4c7d8de
2 changed files with 25 additions and 2 deletions
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11
src/st/st-scroll-bar.c
View File

@ -32,6 +32,7 @@
#include "config.h"
#endif
#include <math.h>
#include <clutter/clutter.h>
#include "st-scroll-bar.h"
@ -443,7 +444,7 @@ st_scroll_bar_scroll_event (ClutterActor *actor,
ClutterScrollEvent *event)
{
StScrollBarPrivate *priv = ST_SCROLL_BAR (actor)->priv;
gdouble lower, step, upper, value;
gdouble lower, step, upper, value, delta_x, delta_y;
if (priv->adjustment)
{
@ -461,6 +462,14 @@ st_scroll_bar_scroll_event (ClutterActor *actor,
switch (event->direction)
{
case CLUTTER_SCROLL_SMOOTH:
clutter_event_get_scroll_delta ((ClutterEvent *)event,
&delta_x, &delta_y);
if (fabs (delta_x) > fabs (delta_y))
st_adjustment_set_value (priv->adjustment, value + delta_x);
else
st_adjustment_set_value (priv->adjustment, value + delta_y);
break;
case CLUTTER_SCROLL_UP:
case CLUTTER_SCROLL_LEFT:
if (value == lower)

16
src/st/st-scroll-view.c
View File

@ -687,7 +687,7 @@ st_scroll_view_scroll_event (ClutterActor *self,
ClutterScrollEvent *event)
{
StScrollViewPrivate *priv = ST_SCROLL_VIEW (self)->priv;
gdouble lower, value, upper, step;
gdouble lower, value, upper, step, hvalue, vvalue, delta_x, delta_y;
/* don't handle scroll events if requested not to */
if (!priv->mouse_scroll)
@ -695,6 +695,16 @@ st_scroll_view_scroll_event (ClutterActor *self,
switch (event->direction)
{
case CLUTTER_SCROLL_SMOOTH:
clutter_event_get_scroll_delta ((ClutterEvent *)event,
&delta_x, &delta_y);
g_object_get (priv->hadjustment,
"value", &hvalue,
NULL);
g_object_get (priv->vadjustment,
"value", &vvalue,
NULL);
break;
case CLUTTER_SCROLL_UP:
case CLUTTER_SCROLL_DOWN:
g_object_get (priv->vadjustment,
@ -717,6 +727,10 @@ st_scroll_view_scroll_event (ClutterActor *self,
switch (event->direction)
{
case CLUTTER_SCROLL_SMOOTH:
st_adjustment_set_value (priv->hadjustment, hvalue + delta_x);
st_adjustment_set_value (priv->vadjustment, vvalue + delta_y);
break;
case CLUTTER_SCROLL_UP:
if (value == lower)
return FALSE;