/*
* Copyright 2009 Intel Corporation.
*
* 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 <stdio.h>
#include <stdlib.h>
#include <gmodule.h>
#include <clutter/clutter.h>
#include <cogl/cogl.h>
#include <cogl-pango/cogl-pango.h>
#define INSTRUCTIONS \
"Press v\t\342\236\236\tSwitch horizontal/vertical\n" \
"Press h\t\342\236\236\tSwitch homogeneous\n" \
"Press p\t\342\236\236\tSwitch pack start/end\n" \
"Press s\t\342\236\236\tIncrement spacing (up to 12px)\n" \
"Press a\t\342\236\236\tSwitch animations on/off\n" \
"Press q\t\342\236\236\tQuit"
static ClutterActor *hover_actor = NULL;
static ClutterActor *box = NULL;
static ClutterActor *label = NULL;
static guint last_index = 0;
static void
on_paint (ClutterActor *actor,
gpointer user_data)
{
guint index_ = GPOINTER_TO_UINT (user_data);
gchar *text = g_strdup_printf ("%u", index_);
ClutterActorBox alloc = { 0, };
CoglColor color;
gint layout_width, layout_height;
gfloat width, height;
PangoLayout *layout;
clutter_actor_get_allocation_box (actor, &alloc);
clutter_actor_box_get_size (&alloc, &width, &height);
layout = clutter_actor_create_pango_layout (actor, text);
pango_layout_get_size (layout, &layout_width, &layout_height);
cogl_color_init_from_4ub (&color, 0, 0, 0, 255);
cogl_pango_render_layout (layout,
(width - (layout_width / 1024)) / 2,
(height - (layout_height / 1024)) / 2,
&color, 0);
g_object_unref (layout);
g_free (text);
}
static void
enter_event (ClutterActor *actor,
ClutterEvent *event,
gpointer data)
{
clutter_rectangle_set_border_width (CLUTTER_RECTANGLE (actor), 2);
clutter_rectangle_set_border_color (CLUTTER_RECTANGLE (actor),
CLUTTER_COLOR_Black);
hover_actor = actor;
}
static void
leave_event (ClutterActor *actor,
ClutterEvent *event,
gpointer data)
{
clutter_rectangle_set_border_width (CLUTTER_RECTANGLE (actor), 0);
hover_actor = NULL;
}
static gboolean
button_release_event (ClutterActor *actor,
ClutterEvent *event,
ClutterBoxLayout *layout)
{
gboolean xfill, yfill;
ClutterBoxAlignment xalign, yalign;
gint button;
button = clutter_event_get_button (event);
if (button == CLUTTER_BUTTON_PRIMARY)
{
clutter_box_layout_get_fill (layout, actor, &xfill, &yfill);
clutter_box_layout_set_fill (layout, actor,
xfill ? FALSE : TRUE,
yfill ? FALSE : TRUE);
}
else
{
clutter_box_layout_get_alignment (layout, actor, &xalign, &yalign);
if (xalign < 2)
xalign += 1;
else
xalign = 0;
if (yalign < 2)
yalign += 1;
else
yalign = 0;
clutter_box_layout_set_alignment (layout, actor, xalign, yalign);
}
return TRUE;
}
static void
add_actor (ClutterBoxLayout *layout,
guint index_)
{
ClutterActor *rect;
static gboolean expand = TRUE;
ClutterColor color;
clutter_color_from_hls (&color,
g_random_double_range (0.0, 360.0),
0.5,
0.5);
color.alpha = 255;
rect = clutter_rectangle_new_with_color (&color);
clutter_actor_set_size (rect, 32, 64);
clutter_box_layout_pack (layout, rect, expand,
FALSE, /* x-fill */
FALSE, /* y-fill */
CLUTTER_BOX_ALIGNMENT_CENTER,
CLUTTER_BOX_ALIGNMENT_CENTER);
clutter_actor_set_reactive (rect, TRUE);
g_signal_connect_after (rect, "paint",
G_CALLBACK (on_paint),
GUINT_TO_POINTER (index_));
g_signal_connect (rect, "enter-event", G_CALLBACK (enter_event), NULL);
g_signal_connect (rect, "leave-event", G_CALLBACK (leave_event), NULL);
g_signal_connect (rect, "button-release-event",
G_CALLBACK (button_release_event),
layout);
expand = !expand;
}
static gboolean
key_release_cb (ClutterActor *actor,
ClutterEvent *event,
ClutterBoxLayout *layout)
{
gboolean toggle;
guint spacing;
switch (clutter_event_get_key_symbol (event))
{
case CLUTTER_KEY_a:
toggle = clutter_box_layout_get_use_animations (layout);
clutter_box_layout_set_use_animations (layout, !toggle);
break;
case CLUTTER_KEY_v:
toggle = clutter_box_layout_get_vertical (layout);
clutter_box_layout_set_vertical (layout, !toggle);
break;
case CLUTTER_KEY_h:
toggle = clutter_box_layout_get_homogeneous (layout);
clutter_box_layout_set_homogeneous (layout, !toggle);
break;
case CLUTTER_KEY_p:
toggle = clutter_box_layout_get_pack_start (layout);
clutter_box_layout_set_pack_start (layout, !toggle);
break;
case CLUTTER_KEY_s:
spacing = clutter_box_layout_get_spacing (layout);
if (spacing > 12)
spacing = 0;
else
spacing++;
clutter_box_layout_set_spacing (layout, spacing);
break;
case CLUTTER_KEY_plus:
add_actor (layout, last_index++);
break;
case CLUTTER_KEY_q:
clutter_main_quit ();
break;
default:
return FALSE;
}
return TRUE;
}
static void
stage_size_changed_cb (ClutterActor *stage,
const ClutterActorBox *allocation,
ClutterAllocationFlags flags,
gpointer dummy G_GNUC_UNUSED)
{
gfloat width, height;
clutter_actor_box_get_size (allocation, &width, &height);
clutter_actor_set_size (box, width - 100, height - 100);
clutter_actor_set_y (label,
height - clutter_actor_get_height (label) - 8);
}
G_MODULE_EXPORT int
test_box_layout_main (int argc, char *argv[])
{
ClutterActor *stage;
ClutterLayoutManager *layout;
gint i;
if (clutter_init (&argc, &argv) != CLUTTER_INIT_SUCCESS)
return 1;
stage = clutter_stage_new ();
clutter_stage_set_title (CLUTTER_STAGE (stage), "Box Layout");
clutter_stage_set_user_resizable (CLUTTER_STAGE (stage), TRUE);
clutter_actor_set_size (stage, 640, 480);
g_signal_connect (stage, "destroy", G_CALLBACK (clutter_main_quit), NULL);
layout = clutter_box_layout_new ();
box = clutter_box_new (layout);
clutter_container_add_actor (CLUTTER_CONTAINER (stage), box);
for (i = 0; i < 5; i++)
add_actor (CLUTTER_BOX_LAYOUT (layout), last_index++);
g_signal_connect (stage, "key-release-event",
G_CALLBACK (key_release_cb),
layout);
g_signal_connect (stage, "allocation-changed",
G_CALLBACK (stage_size_changed_cb),
NULL);
label = clutter_text_new_with_text ("Sans 12px", INSTRUCTIONS);
clutter_container_add_actor (CLUTTER_CONTAINER (stage), label);
clutter_actor_set_y (label,
480 - clutter_actor_get_height (label) - 8);
clutter_actor_show (stage);
clutter_main ();
return EXIT_SUCCESS;
}
G_MODULE_EXPORT const char *
test_box_layout_describe (void)
{
return "BoxLayout layout manager example";
}