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/*
* Copyright (C) 2012 Collabora Ltd.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU Lesser General Public License,
* version 2.1, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
* more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
* Boston, MA 02111-1307, USA.
*
*/
#include <stdlib.h>
#include <math.h>
#include <cairo.h>
#include <glib.h>
#include <clutter/clutter.h>
#define STAGE_WIDTH 800
#define STAGE_HEIGHT 550
#define NUM_COLORS 10
#define NUM_ACTORS 10
static GQueue events = G_QUEUE_INIT;
static GQueue all_events = G_QUEUE_INIT;
static gboolean new_surface = TRUE;
static const ClutterColor const static_colors[] = {
{ 0xff, 0x00, 0x00, 0xff }, /* red */
{ 0x80, 0x00, 0x00, 0xff }, /* dark red */
{ 0x00, 0xff, 0x00, 0xff }, /* green */
{ 0x00, 0x80, 0x00, 0xff }, /* dark green */
{ 0x00, 0x00, 0xff, 0xff }, /* blue */
{ 0x00, 0x00, 0x80, 0xff }, /* dark blue */
{ 0x00, 0xff, 0xff, 0xff }, /* cyan */
{ 0x00, 0x80, 0x80, 0xff }, /* dark cyan */
{ 0xff, 0x00, 0xff, 0xff }, /* magenta */
{ 0xff, 0xff, 0x00, 0xff }, /* yellow */
};
static GHashTable *sequence_to_color = NULL;
static void
canvas_paint (ClutterCairoTexture *canvas)
{
clutter_cairo_texture_invalidate (canvas);
}
static void
draw_touch (ClutterEvent *event,
cairo_t *cr)
{
ClutterEventSequence *sequence = clutter_event_get_event_sequence (event);
const ClutterColor *color;
color = g_hash_table_lookup (sequence_to_color, sequence);
if (color == NULL)
{
color = &static_colors[g_random_int_range (0, NUM_COLORS)];
g_hash_table_insert (sequence_to_color, (gpointer) sequence, (gpointer) color);
}
cairo_set_source_rgba (cr, color->red / 255,
color->green / 255,
color->blue / 255,
color->alpha / 255);
cairo_arc (cr, event->touch.x, event->touch.y, 5, 0, 2 * G_PI);
cairo_fill (cr);
}
static gboolean
draw_touches (ClutterCairoTexture *canvas,
cairo_t *cr)
{
g_queue_foreach (new_surface ? &all_events : &events, (GFunc) draw_touch, cr);
g_queue_clear (&events);
new_surface = FALSE;
return TRUE;
}
static cairo_surface_t *
create_surface (ClutterCairoTexture *texture,
guint width,
guint height,
gpointer user_data)
{
new_surface = TRUE;
return NULL;
}
static gboolean
event_cb (ClutterActor *actor, ClutterEvent *event, ClutterActor *canvas)
{
ClutterEvent *copy;
if (event->type != CLUTTER_TOUCH_UPDATE)
return FALSE;
copy = clutter_event_copy (event);
g_queue_push_tail (&events, copy);
g_queue_push_tail (&all_events, copy);
clutter_actor_queue_redraw (canvas);
return TRUE;
}
static gboolean
rect_event_cb (ClutterActor *actor, ClutterEvent *event, gpointer data)
{
ClutterColor color;
if (event->type != CLUTTER_TOUCH_BEGIN)
return FALSE;
color = static_colors[g_random_int_range (0, NUM_COLORS)];
clutter_rectangle_set_color (CLUTTER_RECTANGLE (actor), &color);
return TRUE;
}
G_MODULE_EXPORT int
test_touch_events_main (int argc, char *argv[])
{
ClutterActor *stage, *canvas;
int i;
/* initialize Clutter */
if (clutter_init (&argc, &argv) != CLUTTER_INIT_SUCCESS)
return EXIT_FAILURE;
/* create a resizable stage */
stage = clutter_stage_new ();
g_signal_connect (stage, "destroy", G_CALLBACK (clutter_main_quit), NULL);
clutter_stage_set_title (CLUTTER_STAGE (stage), "Touch events");
clutter_stage_set_user_resizable (CLUTTER_STAGE (stage), TRUE);
clutter_actor_set_size (stage, STAGE_WIDTH, STAGE_HEIGHT);
clutter_actor_set_reactive (stage, TRUE);
clutter_actor_show (stage);
/* our 2D canvas, courtesy of Cairo */
canvas = clutter_cairo_texture_new (1, 1);
g_signal_connect (canvas, "paint", G_CALLBACK (canvas_paint), NULL);
g_signal_connect (canvas, "draw", G_CALLBACK (draw_touches), NULL);
g_signal_connect (canvas, "create-surface", G_CALLBACK (create_surface), NULL);
clutter_cairo_texture_set_auto_resize (CLUTTER_CAIRO_TEXTURE (canvas), TRUE);
clutter_actor_add_constraint (canvas,
clutter_bind_constraint_new (stage,
CLUTTER_BIND_SIZE,
0));
clutter_container_add_actor (CLUTTER_CONTAINER (stage), canvas);
g_signal_connect (stage, "event", G_CALLBACK (event_cb), canvas);
for (i = 0; i < NUM_ACTORS; i++)
{
gfloat size = STAGE_HEIGHT / NUM_ACTORS;
ClutterColor color = static_colors[i % NUM_COLORS];
ClutterActor *rectangle = clutter_rectangle_new_with_color (&color);
/* Test that event delivery to actors work */
g_signal_connect (rectangle, "event", G_CALLBACK (rect_event_cb), NULL);
clutter_container_add_actor (CLUTTER_CONTAINER (stage), rectangle);
clutter_actor_set_size (rectangle, size, size);
clutter_actor_set_position (rectangle, 0, i * size);
clutter_actor_set_reactive (rectangle, TRUE);
}
sequence_to_color = g_hash_table_new (NULL, NULL);
clutter_main ();
g_queue_foreach (&all_events, (GFunc) clutter_event_free, NULL);
g_queue_clear (&events);
g_queue_clear (&all_events);
g_hash_table_destroy (sequence_to_color);
return EXIT_SUCCESS;
}
G_MODULE_EXPORT const char *
test_touch_events_describe (void)
{
return "Draw shapes based on touch events";
}
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