283 lines
7.9 KiB
C
283 lines
7.9 KiB
C
/*
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* Copyright 2009 Intel Corporation.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU Lesser General Public License,
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* version 2.1, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT ANY
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* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
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* more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
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* Boston, MA 02111-1307, USA.
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*
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <gmodule.h>
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#include <clutter/clutter.h>
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#include <cogl/cogl.h>
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#include <cogl-pango/cogl-pango.h>
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#define INSTRUCTIONS \
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"Press v\t\342\236\236\tSwitch horizontal/vertical\n" \
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"Press h\t\342\236\236\tSwitch homogeneous\n" \
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"Press p\t\342\236\236\tSwitch pack start/end\n" \
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"Press s\t\342\236\236\tIncrement spacing (up to 12px)\n" \
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"Press a\t\342\236\236\tSwitch animations on/off\n" \
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"Press q\t\342\236\236\tQuit"
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static ClutterActor *hover_actor = NULL;
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static ClutterActor *box = NULL;
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static ClutterActor *label = NULL;
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static guint last_index = 0;
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static void
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on_paint (ClutterActor *actor,
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gpointer user_data)
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{
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guint index_ = GPOINTER_TO_UINT (user_data);
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gchar *text = g_strdup_printf ("%u", index_);
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ClutterActorBox alloc = { 0, };
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CoglColor color;
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gint layout_width, layout_height;
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gfloat width, height;
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PangoLayout *layout;
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clutter_actor_get_allocation_box (actor, &alloc);
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clutter_actor_box_get_size (&alloc, &width, &height);
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layout = clutter_actor_create_pango_layout (actor, text);
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pango_layout_get_size (layout, &layout_width, &layout_height);
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cogl_color_init_from_4ub (&color, 0, 0, 0, 255);
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cogl_pango_render_layout (layout,
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(width - (layout_width / 1024)) / 2,
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(height - (layout_height / 1024)) / 2,
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&color, 0);
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g_object_unref (layout);
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g_free (text);
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}
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static void
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enter_event (ClutterActor *actor,
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ClutterEvent *event,
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gpointer data)
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{
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clutter_rectangle_set_border_width (CLUTTER_RECTANGLE (actor), 2);
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clutter_rectangle_set_border_color (CLUTTER_RECTANGLE (actor),
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CLUTTER_COLOR_Black);
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hover_actor = actor;
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}
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static void
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leave_event (ClutterActor *actor,
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ClutterEvent *event,
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gpointer data)
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{
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clutter_rectangle_set_border_width (CLUTTER_RECTANGLE (actor), 0);
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hover_actor = NULL;
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}
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static gboolean
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button_release_event (ClutterActor *actor,
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ClutterEvent *event,
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ClutterBoxLayout *layout)
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{
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gboolean xfill, yfill;
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ClutterBoxAlignment xalign, yalign;
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gint button;
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button = clutter_event_get_button (event);
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if (button == CLUTTER_BUTTON_PRIMARY)
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{
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clutter_box_layout_get_fill (layout, actor, &xfill, &yfill);
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clutter_box_layout_set_fill (layout, actor,
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xfill ? FALSE : TRUE,
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yfill ? FALSE : TRUE);
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}
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else
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{
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clutter_box_layout_get_alignment (layout, actor, &xalign, &yalign);
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if (xalign < 2)
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xalign += 1;
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else
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xalign = 0;
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if (yalign < 2)
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yalign += 1;
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else
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yalign = 0;
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clutter_box_layout_set_alignment (layout, actor, xalign, yalign);
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}
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return TRUE;
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}
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static void
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add_actor (ClutterBoxLayout *layout,
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guint index_)
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{
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ClutterActor *rect;
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static gboolean expand = TRUE;
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ClutterColor color;
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clutter_color_from_hls (&color,
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g_random_double_range (0.0, 360.0),
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0.5,
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0.5);
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color.alpha = 255;
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rect = clutter_rectangle_new_with_color (&color);
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clutter_actor_set_size (rect, 32, 64);
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clutter_box_layout_pack (layout, rect, expand,
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FALSE, /* x-fill */
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FALSE, /* y-fill */
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CLUTTER_BOX_ALIGNMENT_CENTER,
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CLUTTER_BOX_ALIGNMENT_CENTER);
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clutter_actor_set_reactive (rect, TRUE);
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g_signal_connect_after (rect, "paint",
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G_CALLBACK (on_paint),
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GUINT_TO_POINTER (index_));
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g_signal_connect (rect, "enter-event", G_CALLBACK (enter_event), NULL);
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g_signal_connect (rect, "leave-event", G_CALLBACK (leave_event), NULL);
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g_signal_connect (rect, "button-release-event",
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G_CALLBACK (button_release_event),
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layout);
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expand = !expand;
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}
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static gboolean
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key_release_cb (ClutterActor *actor,
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ClutterEvent *event,
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ClutterBoxLayout *layout)
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{
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gboolean toggle;
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guint spacing;
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switch (clutter_event_get_key_symbol (event))
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{
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case CLUTTER_KEY_a:
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toggle = clutter_box_layout_get_use_animations (layout);
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clutter_box_layout_set_use_animations (layout, !toggle);
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break;
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case CLUTTER_KEY_v:
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toggle = clutter_box_layout_get_vertical (layout);
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clutter_box_layout_set_vertical (layout, !toggle);
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break;
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case CLUTTER_KEY_h:
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toggle = clutter_box_layout_get_homogeneous (layout);
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clutter_box_layout_set_homogeneous (layout, !toggle);
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break;
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case CLUTTER_KEY_p:
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toggle = clutter_box_layout_get_pack_start (layout);
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clutter_box_layout_set_pack_start (layout, !toggle);
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break;
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case CLUTTER_KEY_s:
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spacing = clutter_box_layout_get_spacing (layout);
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if (spacing > 12)
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spacing = 0;
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else
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spacing++;
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clutter_box_layout_set_spacing (layout, spacing);
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break;
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case CLUTTER_KEY_plus:
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add_actor (layout, last_index++);
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break;
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case CLUTTER_KEY_q:
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clutter_main_quit ();
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break;
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default:
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return FALSE;
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}
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return TRUE;
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}
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static void
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stage_size_changed_cb (ClutterActor *stage,
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const ClutterActorBox *allocation,
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ClutterAllocationFlags flags,
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gpointer dummy G_GNUC_UNUSED)
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{
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gfloat width, height;
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clutter_actor_box_get_size (allocation, &width, &height);
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clutter_actor_set_size (box, width - 100, height - 100);
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clutter_actor_set_y (label,
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height - clutter_actor_get_height (label) - 8);
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}
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G_MODULE_EXPORT int
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test_box_layout_main (int argc, char *argv[])
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{
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ClutterActor *stage;
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ClutterLayoutManager *layout;
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gint i;
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if (clutter_init (&argc, &argv) != CLUTTER_INIT_SUCCESS)
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return 1;
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stage = clutter_stage_new ();
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clutter_stage_set_title (CLUTTER_STAGE (stage), "Box Layout");
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clutter_stage_set_user_resizable (CLUTTER_STAGE (stage), TRUE);
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clutter_actor_set_size (stage, 640, 480);
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g_signal_connect (stage, "destroy", G_CALLBACK (clutter_main_quit), NULL);
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layout = clutter_box_layout_new ();
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box = clutter_box_new (layout);
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clutter_container_add_actor (CLUTTER_CONTAINER (stage), box);
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for (i = 0; i < 5; i++)
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add_actor (CLUTTER_BOX_LAYOUT (layout), last_index++);
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g_signal_connect (stage, "key-release-event",
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G_CALLBACK (key_release_cb),
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layout);
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g_signal_connect (stage, "allocation-changed",
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G_CALLBACK (stage_size_changed_cb),
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NULL);
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label = clutter_text_new_with_text ("Sans 12px", INSTRUCTIONS);
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clutter_container_add_actor (CLUTTER_CONTAINER (stage), label);
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clutter_actor_set_y (label,
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480 - clutter_actor_get_height (label) - 8);
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clutter_actor_show (stage);
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clutter_main ();
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return EXIT_SUCCESS;
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}
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G_MODULE_EXPORT const char *
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test_box_layout_describe (void)
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{
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return "BoxLayout layout manager example";
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}
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