345 lines
8.8 KiB
C
345 lines
8.8 KiB
C
/* blib - Library of useful things to hack the Blinkenlights
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*
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* Copyright (c) 2002 The Blinkenlights Crew
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* Daniel Mack <daniel@yoobay.net>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include <stdlib.h>
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#include <glib.h>
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#include <gmodule.h>
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#include <string.h>
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#include <blib/blib.h>
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#define TIMEOUT 75
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typedef enum
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{
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DIR_FTTB,
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DIR_FRTL,
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DIR_FBTT,
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DIR_FLTR,
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DIR_LAST
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} BPushlineDir;
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enum
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{
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MODE_EAT
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};
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enum
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{
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PROP_0,
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PROP_DIR,
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};
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#define DEFAULT_MODE MODE_EAT
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#define B_TYPE_PUSHLINE_DIR (b_pushline_dir_get_type ())
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#define B_TYPE_PUSHLINE (b_type_pushline)
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#define B_PUSHLINE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), B_TYPE_PUSHLINE, BPushline))
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#define B_PUSHLINE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), B_TYPE_PUSHLINE, BPushlineClass))
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#define B_IS_PUSHLINE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), B_TYPE_PUSHLINE))
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typedef struct _BPushline BPushline;
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typedef struct _BPushlineClass BPushlineClass;
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struct _BPushline
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{
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BModule parent_instance;
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gint dir;
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gint mode;
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gint pos;
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};
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struct _BPushlineClass
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{
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BModuleClass parent_class;
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};
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static GType b_pushline_get_type (GTypeModule *module);
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static void b_pushline_class_init (BPushlineClass *klass);
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static void b_pushline_init (BPushline *pushline);
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static void b_pushline_set_property (GObject *object,
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guint property_id,
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const GValue *value,
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GParamSpec *pspec);
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static gboolean b_pushline_query (gint width,
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gint height,
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gint channels,
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gint maxval);
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static gboolean b_pushline_prepare (BModule *module,
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GError **error);
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static void b_pushline_relax (BModule *module);
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static void b_pushline_start (BModule *module);
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static gint b_pushline_tick (BModule *module);
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static void b_pushline_describe (BModule *module,
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const gchar **title,
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const gchar **description,
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const gchar **author);
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static GType b_type_pushline = 0;
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static const GEnumValue pushline_dir_enum_values[] =
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{
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{ DIR_FTTB, "top-to-bottom", NULL },
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{ DIR_FRTL, "right-to-left", NULL },
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{ DIR_FBTT, "bottom-to-top", NULL },
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{ DIR_FLTR, "left-to-right", NULL },
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{ 0, NULL, NULL }
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};
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GType
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b_pushline_dir_get_type (void)
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{
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static GType enum_type = 0;
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if (!enum_type)
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enum_type = g_enum_register_static ("BPushlineDirection",
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pushline_dir_enum_values);
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return enum_type;
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}
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G_MODULE_EXPORT gboolean
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b_module_register (GTypeModule *module)
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{
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b_pushline_get_type (module);
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return TRUE;
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}
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GType
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b_pushline_get_type (GTypeModule *module)
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{
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if (!b_type_pushline)
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{
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static const GTypeInfo pushline_info =
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{
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sizeof (BPushlineClass),
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NULL, /* base_init */
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NULL, /* base_finalize */
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(GClassInitFunc) b_pushline_class_init,
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NULL, /* class_finalize */
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NULL, /* class_data */
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sizeof (BPushline),
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0, /* n_preallocs */
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(GInstanceInitFunc) b_pushline_init,
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};
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b_type_pushline = g_type_module_register_type (module, B_TYPE_MODULE,
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"BPushline",
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&pushline_info, 0);
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}
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return b_type_pushline;
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}
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static void
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b_pushline_class_init (BPushlineClass *klass)
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{
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GObjectClass *object_class;
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BModuleClass *module_class;
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GParamSpec *param_spec;
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gint dir;
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dir = random () % DIR_LAST;
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object_class = G_OBJECT_CLASS (klass);
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module_class = B_MODULE_CLASS (klass);
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object_class->set_property = b_pushline_set_property;
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param_spec = g_param_spec_enum ("direction", NULL,
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"The direction the line moves.",
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B_TYPE_PUSHLINE_DIR, dir,
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G_PARAM_CONSTRUCT | G_PARAM_WRITABLE);
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g_object_class_install_property (object_class, PROP_DIR, param_spec);
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module_class->query = b_pushline_query;
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module_class->prepare = b_pushline_prepare;
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module_class->relax = b_pushline_relax;
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module_class->start = b_pushline_start;
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module_class->tick = b_pushline_tick;
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module_class->describe = b_pushline_describe;
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}
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static void
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b_pushline_init (BPushline *pushline)
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{
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pushline->mode = DEFAULT_MODE;
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}
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static void
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b_pushline_set_property (GObject *object,
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guint property_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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BPushline *line = B_PUSHLINE (object);
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switch (property_id)
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{
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case PROP_DIR:
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line->dir = g_value_get_enum (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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break;
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}
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}
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static gboolean
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b_pushline_query (gint width,
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gint height,
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gint channels,
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gint maxval)
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{
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return (width > 0 && height > 3 && channels == 1 && maxval == 255);
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}
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static gboolean
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b_pushline_prepare (BModule *module,
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GError **error)
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{
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BPushline *pushline = B_PUSHLINE (module);
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switch (pushline->dir)
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{
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case DIR_FTTB:
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pushline->pos = -1;
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break;
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case DIR_FRTL:
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pushline->pos = module->width;
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break;
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case DIR_FBTT:
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pushline->pos = module->height;
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break;
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case DIR_FLTR:
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pushline->pos = -1;
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break;
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}
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return TRUE;
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}
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static void
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b_pushline_relax (BModule *module)
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{
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}
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static void
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b_pushline_start (BModule *module)
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{
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b_module_ticker_start (module, b_pushline_tick (module));
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}
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static gint
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b_pushline_tick (BModule *module)
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{
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BPushline *pushline = B_PUSHLINE (module);
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gint width = module->width;
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gint height = module->height;
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switch (pushline->dir)
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{
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case DIR_FTTB:
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pushline->pos++;
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if (pushline->pos >= width)
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goto stop;
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b_module_draw_line (module,
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0, pushline->pos, width - 1, pushline->pos,
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module->maxval);
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if (pushline->pos > 0)
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b_module_draw_line (module,
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0, pushline->pos - 1, width - 1, pushline->pos - 1,
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0);
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break;
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case DIR_FRTL:
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pushline->pos--;
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if (pushline->pos < 0)
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goto stop;
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b_module_draw_line (module,
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pushline->pos, 0, pushline->pos, height - 1,
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module->maxval);
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if (pushline->pos < width - 1)
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b_module_draw_line (module,
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pushline->pos + 1, 0, pushline->pos + 1, height -1,
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0);
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break;
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case DIR_FBTT:
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pushline->pos--;
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if (pushline->pos < 0)
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goto stop;
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b_module_draw_line (module,
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0, pushline->pos, width-1, pushline->pos,
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module->maxval);
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if (pushline->pos < height-1)
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b_module_draw_line (module,
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0, pushline->pos + 1, width - 1, pushline->pos + 1,
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0);
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break;
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case DIR_FLTR:
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pushline->pos++;
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if (pushline->pos > width)
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goto stop;
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b_module_draw_line (module,
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pushline->pos, 0, pushline->pos, height - 1,
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module->maxval);
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if (pushline->pos > 0)
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b_module_draw_line (module,
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pushline->pos - 1, 0, pushline->pos - 1, height -1,
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0);
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break;
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}
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b_module_paint (module);
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return TIMEOUT;
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stop:
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b_module_fill (module, 0);
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b_module_paint (module);
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b_module_request_stop (module);
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return 0;
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}
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static void
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b_pushline_describe (BModule *module,
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const gchar **title,
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const gchar **description,
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const gchar **author)
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{
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*title = "BPushline";
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*description = "Pushline hack";
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*author = "Daniel Mack";
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}
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