mutter/tests/test-project.c

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#include <clutter/clutter.h>
#include <stdio.h>
#include <stdlib.h>
static ClutterActor *main_stage, *rect, *p[5];
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static void
init_handles ()
{
gint i;
ClutterVertex v[4];
ClutterVertex v1, v2;
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ClutterColor blue = { 0, 0, 0xff, 0xff };
clutter_actor_get_vertices (rect, v);
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for (i = 0; i < 4; ++i)
{
p[i] = clutter_rectangle_new_with_color (&blue);
clutter_actor_set_size (p[i], 5, 5);
clutter_actor_set_position (p[i], 0, 0);
clutter_group_add (CLUTTER_GROUP (main_stage), p[i]);
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clutter_actor_set_position (p[i],
CLUTTER_FIXED_INT (v[i].x) -
clutter_actor_get_width (p[i])/2,
CLUTTER_FIXED_INT (v[i].y) -
clutter_actor_get_height (p[i])/2);
clutter_actor_raise_top (p[i]);
clutter_actor_show (p[i]);
}
v1.x = CLUTTER_INT_TO_FIXED (clutter_actor_get_width (rect)/2);
v1.y = CLUTTER_INT_TO_FIXED (clutter_actor_get_height (rect)/2);
v1.z = 0;
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clutter_actor_apply_transform_to_point (rect, &v1, &v2);
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p[4] = clutter_rectangle_new_with_color (&blue);
clutter_actor_set_size (p[4], 5, 5);
clutter_actor_set_position (p[4], 0, 0);
clutter_group_add (CLUTTER_GROUP (main_stage), p[4]);
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clutter_actor_set_position (p[4],
CLUTTER_FIXED_INT (v2.x) -
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clutter_actor_get_width (p[4])/2,
CLUTTER_FIXED_INT (v2.y) -
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clutter_actor_get_height (p[4])/2);
clutter_actor_raise_top (p[4]);
clutter_actor_show (p[4]);
}
static void
place_handles ()
{
gint i;
ClutterVertex v[4];
ClutterVertex v1, v2;
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clutter_actor_get_vertices (rect, v);
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for (i = 0; i < 4; ++i)
{
clutter_actor_set_position (p[i],
CLUTTER_FIXED_INT (v[i].x) -
clutter_actor_get_width (p[i])/2,
CLUTTER_FIXED_INT (v[i].y) -
clutter_actor_get_height (p[i])/2);
}
v1.x = CLUTTER_INT_TO_FIXED (clutter_actor_get_width (rect)/2);
v1.y = CLUTTER_INT_TO_FIXED (clutter_actor_get_height (rect)/2);
v1.z = 0;
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clutter_actor_apply_transform_to_point (rect, &v1, &v2);
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clutter_actor_set_position (p[4],
CLUTTER_FIXED_INT (v2.x) -
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clutter_actor_get_width (p[4])/2,
CLUTTER_FIXED_INT (v2.y) -
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clutter_actor_get_height (p[4])/2);
}
#define M(m,row,col) (m)[col*4+row]
static gint
find_handle_index (ClutterActor * a)
{
gint i;
for (i = 0; i < sizeof(p)/sizeof(p[0]); ++i)
if (p[i] == a)
return i;
return -1;
}
void
on_event (ClutterStage *stage,
ClutterEvent *event,
gpointer user_data)
{
static ClutterActor * dragging = NULL;
switch (event->type)
{
case CLUTTER_BUTTON_PRESS:
{
gint x, y;
ClutterActor * actor;
clutter_event_get_coords (event, &x, &y);
actor = clutter_stage_get_actor_at_pos (stage, x, y);
if (actor != CLUTTER_ACTOR (stage))
{
if (actor != rect)
dragging = actor;
}
}
break;
case CLUTTER_MOTION:
{
if (dragging)
{
gint x, y;
gint i;
ClutterActorBox box1, box2;
ClutterFixed xp, yp;
i = find_handle_index (dragging);
if (i < 0)
break;
clutter_event_get_coords (event, &x, &y);
clutter_actor_query_coords (dragging, &box1);
clutter_actor_query_coords (rect, &box2);
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xp = CLUTTER_INT_TO_FIXED (x-3) - box1.x1;
yp = CLUTTER_INT_TO_FIXED (y-3) - box1.y1;
if (i == 4)
{
g_debug ("moving box by %f, %f",
CLUTTER_FIXED_TO_FLOAT (xp),
CLUTTER_FIXED_TO_FLOAT (yp));
clutter_actor_move_by (rect,
CLUTTER_FIXED_INT(xp),
CLUTTER_FIXED_INT(yp));
}
else
{
g_debug ("adjusting box by %f, %f, handle %d",
CLUTTER_FIXED_TO_FLOAT (xp),
CLUTTER_FIXED_TO_FLOAT (yp),
i);
switch (i)
{
case 0:
box2.x1 += xp;
box2.y1 += yp;
break;
case 1:
box2.x2 += xp;
box2.y1 += yp;
break;
case 2:
box2.x1 += xp;
box2.y2 += yp;
break;
case 3:
box2.x2 += xp;
box2.y2 += yp;
break;
}
clutter_actor_request_coords (rect, &box2);
}
place_handles ();
}
}
break;
case CLUTTER_BUTTON_RELEASE:
{
dragging = NULL;
}
break;
default:
break;
}
}
int
main (int argc, char *argv[])
{
ClutterActor *label;
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ClutterColor stage_color = { 0x0, 0x0, 0x0, 0xff },
white = { 0xff, 0xff, 0xff, 0xff };
clutter_init (&argc, &argv);
main_stage = clutter_stage_get_default ();
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clutter_stage_set_color (CLUTTER_STAGE (main_stage), &stage_color);
clutter_actor_set_size (main_stage, 640, 480);
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rect = clutter_rectangle_new_with_color (&white);
clutter_actor_set_size (rect, 320, 240);
clutter_actor_set_position (rect, 180, 120);
clutter_actor_rotate_y (rect, 60, 0, 0);
clutter_group_add (CLUTTER_GROUP (main_stage), rect);
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label = clutter_label_new_with_text ("Mono 8pt", "Drag the blue rectangles");
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clutter_label_set_color (CLUTTER_LABEL (label), &white);
clutter_actor_set_position (label, 10, 10);
clutter_group_add (CLUTTER_GROUP (main_stage), label);
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clutter_actor_show_all (main_stage);
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g_signal_connect (main_stage, "event", G_CALLBACK (on_event), NULL);
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init_handles ();
clutter_main();
return EXIT_SUCCESS;
}