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mutter/examples/grid-layout.c
Emmanuele Bassi 77ec8774a0 WARNING: Massive revert commit 
Revert all the work that happened on the master branch.

Sadly, this is the only way to merge the current development branch back
into master.

It is now abundantly clear that I merged the 1.99 branch far too soon,
and that Clutter 2.0 won't happen any time soon, if at all.

Since having the development happen on a separate branch throws a lot of
people into confusion, let's undo the clutter-1.99 → master merge, and
move back the development of Clutter to the master branch.

In order to do so, we need to do some surgery to the Git repository.

First, we do a massive revert in a single commit of all that happened
since the switch to 1.99 and the API version bump done with the
89a2862b05 commit. The history is too long
to be reverted commit by commit without being extremely messy.
2015-01-03 20:34:20 +00:00

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/*
* Copyright 2012 Bastian Winkler <buz@netbuz.org>
*
* 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 <clutter/clutter.h>
#define INSTRUCTIONS \
"Press r\t\342\236\236\tSwitch row homogeneous\n" \
"Press c\t\342\236\236\tSwitch column homogeneous\n" \
"Press s\t\342\236\236\tIncrement spacing (up to 12px)\n" \
"Press q\t\342\236\236\tQuit\n\n" \
"Left/right click\t\t\342\236\236\tChange actor align\n" \
"Shift left/right click\t\342\236\236\tChange actor expand"
static gboolean random_size = FALSE;
static gboolean random_align = FALSE;
static gboolean default_expand = TRUE;
static gboolean use_box = FALSE;
static gboolean is_vertical = FALSE;
static GOptionEntry entries[] = {
{
"random-size", 'r',
0,
G_OPTION_ARG_NONE,
&random_size,
"Randomly size the rectangles", NULL
},
{
"random-align", 'f',
0,
G_OPTION_ARG_NONE,
&random_align,
"Randomly set the align values", NULL
},
{
"no-expand", 'e',
G_OPTION_FLAG_REVERSE,
G_OPTION_ARG_NONE,
&default_expand,
"Don't expand all actors by default", NULL,
},
{
"box", 'b',
0,
G_OPTION_ARG_NONE,
&use_box,
"Use the layout in a ClutterBoxLayout style", NULL
},
{
"vertical", 'v',
0,
G_OPTION_ARG_NONE,
&is_vertical,
"Use a vertical orientation when used with --box", NULL
},
{ NULL }
};
static gboolean
button_release_cb (ClutterActor *actor,
ClutterEvent *event,
gpointer data)
{
ClutterActorAlign x_align, y_align;
gboolean x_expand, y_expand;
g_object_get (actor,
"x-align", &x_align,
"y-align", &y_align,
"x-expand", &x_expand,
"y-expand", &y_expand,
NULL);
switch (clutter_event_get_button (event))
{
case CLUTTER_BUTTON_PRIMARY:
if (clutter_event_has_shift_modifier (event))
x_expand = !x_expand;
else
{
if (x_align < 3)
x_align += 1;
else
x_align = 0;
}
break;
case CLUTTER_BUTTON_SECONDARY:
if (clutter_event_has_shift_modifier (event))
y_expand = !y_expand;
else
{
if (y_align < 3)
y_align += 1;
else
y_align = 0;
}
break;
default:
return FALSE;
}
g_object_set (actor,
"x-align", x_align,
"y-align", y_align,
"x-expand", x_expand,
"y-expand", y_expand,
NULL);
return TRUE;
}
static const gchar *
get_align_name (ClutterActorAlign align)
{
switch (align)
{
case CLUTTER_ACTOR_ALIGN_FILL:
return "fill";
case CLUTTER_ACTOR_ALIGN_START:
return "start";
case CLUTTER_ACTOR_ALIGN_CENTER:
return "center";
case CLUTTER_ACTOR_ALIGN_END:
return "end";
default:
g_assert_not_reached ();
}
}
static void
changed_cb (ClutterActor *actor,
GParamSpec *pspec,
ClutterActor *text)
{
ClutterActorAlign x_align, y_align;
ClutterActor *box;
ClutterLayoutManager *layout;
ClutterLayoutMeta *meta;
gboolean x_expand, y_expand;
gchar *label;
gint left, top, width, height;
box = clutter_actor_get_parent (actor);
layout = clutter_actor_get_layout_manager (box);
meta = clutter_layout_manager_get_child_meta (layout,
CLUTTER_CONTAINER (box),
actor);
g_object_get (actor,
"x-align", &x_align,
"y-align", &y_align,
"x-expand", &x_expand,
"y-expand", &y_expand,
NULL);
g_object_get (meta,
"left-attach", &left,
"top-attach", &top,
"width", &width,
"height", &height,
NULL);
label = g_strdup_printf ("attach: %d,%d\n"
"span: %d,%d\n"
"expand: %d,%d\n"
"align: %s,%s",
left, top, width, height,
x_expand, y_expand,
get_align_name (x_align),
get_align_name (y_align));
clutter_text_set_text (CLUTTER_TEXT (text), label);
g_free (label);
}
static void
add_actor (ClutterActor *box,
gint left,
gint top,
gint width,
gint height)
{
ClutterActor *rect, *text;
ClutterColor color;
ClutterLayoutManager *layout;
clutter_color_from_hls (&color,
g_random_double_range (0.0, 360.0),
0.5,
0.5);
color.alpha = 255;
layout = clutter_bin_layout_new (CLUTTER_BIN_ALIGNMENT_CENTER,
CLUTTER_BIN_ALIGNMENT_CENTER);
rect = clutter_actor_new ();
clutter_actor_set_layout_manager (rect, layout);
clutter_actor_set_background_color (rect, &color);
clutter_actor_set_reactive (rect, TRUE);
if (random_size)
clutter_actor_set_size (rect,
g_random_int_range (40, 80),
g_random_int_range (40, 80));
else
clutter_actor_set_size (rect, 60, 60);
clutter_actor_set_x_expand (rect, default_expand);
clutter_actor_set_y_expand (rect, default_expand);
if (!default_expand)
{
clutter_actor_set_x_align (rect, CLUTTER_ACTOR_ALIGN_CENTER);
clutter_actor_set_y_align (rect, CLUTTER_ACTOR_ALIGN_CENTER);
}
if (random_align)
{
clutter_actor_set_x_align (rect, g_random_int_range (0, 3));
clutter_actor_set_y_align (rect, g_random_int_range (0, 3));
}
text = clutter_text_new_with_text ("Sans 8px", NULL);
clutter_text_set_line_alignment (CLUTTER_TEXT (text),
PANGO_ALIGN_CENTER);
clutter_actor_add_child (rect, text);
g_signal_connect (rect, "button-release-event",
G_CALLBACK (button_release_cb), NULL);
g_signal_connect (rect, "notify::x-expand",
G_CALLBACK (changed_cb), text);
g_signal_connect (rect, "notify::y-expand",
G_CALLBACK (changed_cb), text);
g_signal_connect (rect, "notify::x-align",
G_CALLBACK (changed_cb), text);
g_signal_connect (rect, "notify::y-align",
G_CALLBACK (changed_cb), text);
layout = clutter_actor_get_layout_manager (box);
if (use_box)
clutter_actor_add_child (box, rect);
else
clutter_grid_layout_attach (CLUTTER_GRID_LAYOUT (layout), rect,
left, top, width, height);
changed_cb (rect, NULL, text);
}
static gboolean
key_release_cb (ClutterActor *stage,
ClutterEvent *event,
ClutterActor *box)
{
ClutterGridLayout *layout;
gboolean toggle;
guint spacing;
layout = CLUTTER_GRID_LAYOUT (clutter_actor_get_layout_manager (box));
switch (clutter_event_get_key_symbol (event))
{
case CLUTTER_KEY_c:
toggle = clutter_grid_layout_get_column_homogeneous (layout);
clutter_grid_layout_set_column_homogeneous (layout, !toggle);
break;
case CLUTTER_KEY_r:
toggle = clutter_grid_layout_get_row_homogeneous (layout);
clutter_grid_layout_set_row_homogeneous (layout, !toggle);
break;
case CLUTTER_KEY_s:
spacing = clutter_grid_layout_get_column_spacing (layout);
if (spacing < 12)
spacing += 1;
else
spacing = 0;
clutter_grid_layout_set_column_spacing (layout, spacing);
clutter_grid_layout_set_row_spacing (layout, spacing);
break;
case CLUTTER_KEY_q:
clutter_main_quit ();
break;
default:
return FALSE;
}
return TRUE;
}
int
main (int argc, char *argv[])
{
ClutterActor *stage, *box, *instructions;
ClutterLayoutManager *stage_layout, *grid_layout;
GError *error = NULL;
if (clutter_init_with_args (&argc, &argv,
NULL,
entries,
NULL,
&error) != CLUTTER_INIT_SUCCESS)
{
g_print ("Unable to run grid-layout: %s", error->message);
g_error_free (error);
return EXIT_FAILURE;
}
stage = clutter_stage_new ();
clutter_stage_set_user_resizable (CLUTTER_STAGE (stage), TRUE);
stage_layout = clutter_box_layout_new ();
clutter_box_layout_set_orientation (CLUTTER_BOX_LAYOUT (stage_layout),
CLUTTER_ORIENTATION_VERTICAL);
clutter_actor_set_layout_manager (stage, stage_layout);
grid_layout = clutter_grid_layout_new ();
if (is_vertical)
clutter_grid_layout_set_orientation (CLUTTER_GRID_LAYOUT (grid_layout),
CLUTTER_ORIENTATION_VERTICAL);
box = clutter_actor_new ();
clutter_actor_set_background_color (box, CLUTTER_COLOR_LightGray);
clutter_actor_set_x_expand (box, TRUE);
clutter_actor_set_y_expand (box, TRUE);
clutter_actor_set_layout_manager (box, grid_layout);
clutter_box_layout_pack (CLUTTER_BOX_LAYOUT (stage_layout), box,
TRUE, TRUE, TRUE,
CLUTTER_BOX_ALIGNMENT_CENTER,
CLUTTER_BOX_ALIGNMENT_CENTER);
add_actor (box, 0, 0, 1, 1);
add_actor (box, 1, 0, 1, 1);
add_actor (box, 2, 0, 1, 1);
add_actor (box, 0, 1, 1, 1);
add_actor (box, 1, 1, 2, 1);
add_actor (box, 0, 2, 3, 1);
add_actor (box, 0, 3, 2, 2);
add_actor (box, 2, 3, 1, 1);
add_actor (box, 2, 4, 1, 1);
instructions = clutter_text_new_with_text ("Sans 12px", INSTRUCTIONS);
clutter_actor_set_margin_top (instructions, 4);
clutter_actor_set_margin_left (instructions, 4);
clutter_actor_set_margin_bottom (instructions, 4);
clutter_box_layout_pack (CLUTTER_BOX_LAYOUT (stage_layout), instructions,
FALSE, TRUE, FALSE,
CLUTTER_BOX_ALIGNMENT_START,
CLUTTER_BOX_ALIGNMENT_CENTER);
g_signal_connect (stage, "destroy",
G_CALLBACK (clutter_main_quit), NULL);
g_signal_connect (stage, "key-release-event",
G_CALLBACK (key_release_cb), box);
clutter_actor_show (stage);
clutter_main ();
return 0;
}
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