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#include <stdlib.h>
#include <clutter/clutter.h>
static gboolean
on_enter (ClutterActor *actor,
ClutterEvent *event)
{
ClutterTransition *t;
t = clutter_actor_get_transition (actor, "curl");
if (t == NULL)
{
t = clutter_property_transition_new ("@effects.curl.period");
clutter_timeline_set_duration (CLUTTER_TIMELINE (t), 250);
clutter_actor_add_transition (actor, "curl", t);
g_object_unref (t);
}
clutter_transition_set_from (t, G_TYPE_DOUBLE, 0.0);
clutter_transition_set_to (t, G_TYPE_DOUBLE, 0.25);
clutter_timeline_rewind (CLUTTER_TIMELINE (t));
clutter_timeline_start (CLUTTER_TIMELINE (t));
return CLUTTER_EVENT_STOP;
}
static gboolean
on_leave (ClutterActor *actor,
ClutterEvent *event)
{
ClutterTransition *t;
t = clutter_actor_get_transition (actor, "curl");
if (t == NULL)
{
t = clutter_property_transition_new ("@effects.curl.period");
clutter_timeline_set_duration (CLUTTER_TIMELINE (t), 250);
clutter_actor_add_transition (actor, "curl", t);
g_object_unref (t);
}
clutter_transition_set_from (t, G_TYPE_DOUBLE, 0.25);
clutter_transition_set_to (t, G_TYPE_DOUBLE, 0.0);
clutter_timeline_rewind (CLUTTER_TIMELINE (t));
clutter_timeline_start (CLUTTER_TIMELINE (t));
return CLUTTER_EVENT_STOP;
}
static void
on_drag_begin (ClutterDragAction *action,
ClutterActor *actor,
gfloat event_x,
gfloat event_y,
ClutterModifierType modifiers)
{
gboolean is_copy = (modifiers & CLUTTER_SHIFT_MASK) ? TRUE : FALSE;
ClutterActor *drag_handle = NULL;
ClutterTransition *t;
if (is_copy)
{
ClutterActor *stage = clutter_actor_get_stage (actor);
drag_handle = clutter_actor_new ();
clutter_actor_set_size (drag_handle, 48, 48);
clutter_actor_set_background_color (drag_handle, CLUTTER_COLOR_DarkSkyBlue);
clutter_actor_add_child (stage, drag_handle);
clutter_actor_set_position (drag_handle, event_x, event_y);
}
else
drag_handle = actor;
clutter_drag_action_set_drag_handle (action, drag_handle);
/* fully desaturate the actor */
t = clutter_actor_get_transition (actor, "disable");
if (t == NULL)
{
t = clutter_property_transition_new ("@effects.disable.factor");
clutter_timeline_set_duration (CLUTTER_TIMELINE (t), 250);
clutter_actor_add_transition (actor, "disable", t);
g_object_unref (t);
}
clutter_transition_set_from (t, G_TYPE_DOUBLE, 0.0);
clutter_transition_set_to (t, G_TYPE_DOUBLE, 1.0);
clutter_timeline_rewind (CLUTTER_TIMELINE (t));
clutter_timeline_start (CLUTTER_TIMELINE (t));
}
static void
on_drag_end (ClutterDragAction *action,
ClutterActor *actor,
gfloat event_x,
gfloat event_y,
ClutterModifierType modifiers)
{
ClutterActor *drag_handle;
ClutterTransition *t;
drag_handle = clutter_drag_action_get_drag_handle (action);
if (actor != drag_handle)
{
gfloat real_x, real_y;
ClutterActor *parent;
/* if we are dragging a copy we can destroy the copy now
* and animate the real actor to the drop coordinates,
* transformed in the parent's coordinate space
*/
clutter_actor_save_easing_state (drag_handle);
clutter_actor_set_easing_mode (drag_handle, CLUTTER_LINEAR);
clutter_actor_set_opacity (drag_handle, 0);
clutter_actor_restore_easing_state (drag_handle);
g_signal_connect (drag_handle, "transitions-completed",
G_CALLBACK (clutter_actor_destroy),
NULL);
parent = clutter_actor_get_parent (actor);
clutter_actor_transform_stage_point (parent, event_x, event_y,
&real_x,
&real_y);
clutter_actor_save_easing_state (actor);
clutter_actor_set_easing_mode (actor, CLUTTER_EASE_OUT_CUBIC);
clutter_actor_set_position (actor, real_x, real_y);
clutter_actor_restore_easing_state (actor);
}
t = clutter_actor_get_transition (actor, "disable");
if (t == NULL)
{
t = clutter_property_transition_new ("@effects.disable.factor");
clutter_timeline_set_duration (CLUTTER_TIMELINE (t), 250);
clutter_actor_add_transition (actor, "disable", t);
g_object_unref (t);
}
clutter_transition_set_from (t, G_TYPE_DOUBLE, 1.0);
clutter_transition_set_to (t, G_TYPE_DOUBLE, 0.0);
clutter_timeline_rewind (CLUTTER_TIMELINE (t));
clutter_timeline_start (CLUTTER_TIMELINE (t));
}
static ClutterDragAxis
get_drag_axis (const gchar *str)
{
if (str == NULL || *str == '\0')
return CLUTTER_DRAG_AXIS_NONE;
if (*str == 'x' || *str == 'X')
return CLUTTER_DRAG_X_AXIS;
if (*str == 'y' || *str == 'Y')
return CLUTTER_DRAG_Y_AXIS;
g_warn_if_reached ();
return CLUTTER_DRAG_AXIS_NONE;
}
static gchar *drag_axis = NULL;
static gint x_drag_threshold = 0;
static gint y_drag_threshold = 0;
static GOptionEntry entries[] = {
{
"x-threshold", 'x',
0,
G_OPTION_ARG_INT,
&x_drag_threshold,
"Set the horizontal drag threshold", "PIXELS"
},
{
"y-threshold", 'y',
0,
G_OPTION_ARG_INT,
&y_drag_threshold,
"Set the vertical drag threshold", "PIXELS"
},
{
"axis", 'a',
0,
G_OPTION_ARG_STRING,
&drag_axis,
"Set the drag axis", "AXIS"
},
{ NULL }
};
int
main (int argc, char *argv[])
{
ClutterActor *stage, *handle;
ClutterAction *action;
GError *error;
error = NULL;
if (clutter_init_with_args (&argc, &argv,
"test-drag",
entries,
NULL,
&error) != CLUTTER_INIT_SUCCESS)
{
g_print ("Unable to run drag-action: %s\n", error->message);
g_error_free (error);
return EXIT_FAILURE;
}
stage = clutter_stage_new ();
clutter_stage_set_title (CLUTTER_STAGE (stage), "Drag Test");
clutter_actor_set_size (stage, 800, 600);
g_signal_connect (stage, "destroy", G_CALLBACK (clutter_main_quit), NULL);
handle = clutter_actor_new ();
clutter_actor_set_background_color (handle, CLUTTER_COLOR_SkyBlue);
clutter_actor_set_size (handle, 128, 128);
clutter_actor_set_position (handle, (800 - 128) / 2, (600 - 128) / 2);
clutter_actor_set_reactive (handle, TRUE);
clutter_actor_add_child (stage, handle);
g_signal_connect (handle, "enter-event", G_CALLBACK (on_enter), NULL);
g_signal_connect (handle, "leave-event", G_CALLBACK (on_leave), NULL);
action = clutter_drag_action_new ();
clutter_drag_action_set_drag_threshold (CLUTTER_DRAG_ACTION (action),
x_drag_threshold,
y_drag_threshold);
clutter_drag_action_set_drag_axis (CLUTTER_DRAG_ACTION (action),
get_drag_axis (drag_axis));
g_signal_connect (action, "drag-begin", G_CALLBACK (on_drag_begin), NULL);
g_signal_connect (action, "drag-end", G_CALLBACK (on_drag_end), NULL);
clutter_actor_add_action (handle, action);
clutter_actor_add_effect_with_name (handle, "disable", clutter_desaturate_effect_new (0.0));
clutter_actor_add_effect_with_name (handle, "curl", clutter_page_turn_effect_new (0.0, 45.0, 12.0));
clutter_actor_show (stage);
clutter_main ();
return EXIT_SUCCESS;
}
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