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* clutter/clutter-main.c: (event_click_count_generate): generalized

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click_count generation code.
* tests/test-events.c: (input_cb): extended test to report click_count
for release and scroll events as well as press events.
This commit is contained in:
Øyvind Kolås 2007-11-20 17:14:05 +00:00
parent 08f841304a
commit a770e57193
3 changed files with 50 additions and 53 deletions
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7
ChangeLog
View File

@ -1,3 +1,10 @@
2007-11-20 Øyvind Kolås <pippin@o-hand.com>
* clutter/clutter-main.c: (event_click_count_generate): generalized
click_count generation code.
* tests/test-events.c: (input_cb): extended test to report click_count
for release and scroll events as well as press events.
2007-11-20 Øyvind Kolås <pippin@o-hand.com>
* clutter/clutter-main.c: (clutter_do_event): avoid computing source

81
clutter/clutter-main.c
View File

@ -1120,64 +1120,51 @@ static void
event_click_count_generate (ClutterEvent *event)
{
/* multiple button click detection */
static guint32 button_click_time[2] = { 0, 0 };
static guint32 button_number[2] = { -1, -1 };
static gint button_x[2] = { 0, 0 };
static gint button_y[2] = { 0, 0 };
static gint click_count = 0;
static gint previous_x = -1;
static gint previous_y = -1;
static guint32 previous_time = 0;
static gint previous_button_number = -1;
guint double_click_time, double_click_distance;
ClutterBackend *backend;
ClutterMainContext *context;
context = clutter_context_get_default ();
backend = context->backend;
guint double_click_time;
guint double_click_distance;
backend = clutter_context_get_default ()->backend;
double_click_distance = clutter_backend_get_double_click_distance (backend);
double_click_time = clutter_backend_get_double_click_time (backend);
/* FIXME: below could be reduced in lines and handle >3 clicks */
if ((event->button.time < (button_click_time[1] + 2 * double_click_time))
&& (event->button.button == button_number[1])
&& (ABS (event->button.x - button_x[1]) <= double_click_distance)
&& (ABS (event->button.y - button_y[1]) <= double_click_distance))
switch (event->type)
{
event->button.click_count = 2;
button_click_time[1] = 0;
button_click_time[0] = 0;
button_number[1] = -1;
button_number[0] = -1;
button_x[0] = button_x[1] = 0;
button_y[0] = button_y[1] = 0;
case CLUTTER_BUTTON_PRESS:
case CLUTTER_SCROLL:
/* check if we are in time and within distance to increment an
* existing click count
*/
if (event->button.time < previous_time + double_click_time &&
(ABS (event->button.x - previous_x) <= double_click_distance) &&
(ABS (event->button.y - previous_y) <= double_click_distance)
&& event->button.button == previous_button_number)
{
click_count ++;
}
else if ((event->button.time < (button_click_time[0] + double_click_time)) &&
(event->button.button == button_number[0]) &&
(ABS (event->button.x - button_x[0]) <= double_click_distance) &&
(ABS (event->button.y - button_y[0]) <= double_click_distance))
else /* start a new click count*/
{
event->button.click_count = 3;
button_click_time[1] = button_click_time[0];
button_click_time[0] = event->button.time;
button_number[1] = button_number[0];
button_number[0] = event->button.button;
button_x[1] = button_x[0];
button_x[0] = event->button.x;
button_y[1] = button_y[0];
button_y[0] = event->button.y;
click_count=1;
previous_button_number = event->button.button;
}
else
{
event->button.click_count = 1;
button_click_time[1] = 0;
button_click_time[0] = event->button.time;
button_number[1] = -1;
button_number[0] = event->button.button;
button_x[1] = 0;
button_x[0] = event->button.x;
button_y[1] = 0;
button_y[0] = event->button.y;
/* store time and position for this click for comparison with next event */
previous_time = event->button.time;
previous_x = event->button.x;
previous_y = event->button.y;
/* fallthrough */
case CLUTTER_BUTTON_RELEASE:
event->button.click_count=click_count;
break;
default:
g_assert (NULL);
}
}

9
tests/test-events.c
View File

@ -116,15 +116,18 @@ input_cb (ClutterActor *actor,
source, event->button.click_count);
break;
case CLUTTER_BUTTON_RELEASE:
printf("[%s] BUTTON RELEASE", source);
printf("[%s] BUTTON RELEASE (click count:%i)",
source, event->button.click_count);
if (clutter_event_get_source (event) == CLUTTER_ACTOR (stage))
clutter_stage_set_key_focus (stage, NULL);
else if (clutter_event_get_source (event) == actor
&& clutter_actor_get_parent (actor) == stage)
&& clutter_actor_get_parent (actor) == CLUTTER_ACTOR (stage))
clutter_stage_set_key_focus (stage, actor);
break;
case CLUTTER_SCROLL:
printf("[%s] BUTTON SCROLL", source);
printf("[%s] BUTTON SCROLL (click count:%i)",
source, event->button.click_count);
break;
case CLUTTER_STAGE_STATE:
printf("[%s] STAGE STATE", source);