git.sur5r.net Git - glabels/blob - src/field-button-menu.c

   1 /*
   2  *  field-button-menu.c
   3  *  Copyright (C) 2008-2009  Jim Evins <evins@snaught.com>.
   4  *
   5  *  This file is part of gLabels.
   6  *
   7  *  gLabels is free software: you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License as published by
   9  *  the Free Software Foundation, either version 3 of the License, or
  10  *  (at your option) any later version.
  11  *
  12  *  gLabels is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with gLabels.  If not, see <http://www.gnu.org/licenses/>.
  19  */
  20
  21 #include <config.h>
  22
  23 #include "field-button-menu.h"
  24
  25 #include <string.h>
  26 #include <gtk/gtk.h>
  27
  28 #include "marshal.h"
  29
  30 #include "debug.h"
  31
  32 #define MAX_MENU_ROWS 25
  33
  34 /*===========================================*/
  35 /* Private types                             */
  36 /*===========================================*/
  37
  38
  39 struct _glFieldButtonMenuPrivate {
  40
  41         GList *menu_items;
  42 };
  43
  44 enum {
  45         KEY_SELECTED,
  46         LAST_SIGNAL
  47 };
  48
  49 typedef void (*glFieldButtonMenuSignal) (GObject * object, gpointer data);
  50
  51
  52 /*===========================================*/
  53 /* Private globals                           */
  54 /*===========================================*/
  55
  56 static gint signals[LAST_SIGNAL] = { 0 };
  57
  58
  59 /*===========================================*/
  60 /* Local function prototypes                 */
  61 /*===========================================*/
  62
  63 static void gl_field_button_menu_finalize      (GObject              *object);
  64
  65
  66 /****************************************************************************/
  67 /* Boilerplate Object stuff.                                                */
  68 /****************************************************************************/
  69 G_DEFINE_TYPE (glFieldButtonMenu, gl_field_button_menu, GTK_TYPE_MENU)
  70
  71
  72 static void
  73 gl_field_button_menu_class_init (glFieldButtonMenuClass *class)
  74 {
  75         GObjectClass *object_class = G_OBJECT_CLASS (class);
  76
  77         gl_debug (DEBUG_FIELD_BUTTON, "START");
  78
  79         gl_field_button_menu_parent_class = g_type_class_peek_parent (class);
  80
  81         object_class->finalize = gl_field_button_menu_finalize;
  82
  83         signals[KEY_SELECTED] =
  84             g_signal_new ("key_selected",
  85                           G_OBJECT_CLASS_TYPE(object_class),
  86                           G_SIGNAL_RUN_LAST,
  87                           G_STRUCT_OFFSET (glFieldButtonMenuClass, key_selected),
  88                           NULL, NULL,
  89                           gl_marshal_VOID__STRING,
  90                           G_TYPE_NONE, 1, G_TYPE_STRING);
  91
  92         gl_debug (DEBUG_FIELD_BUTTON, "END");
  93 }
  94
  95
  96 static void
  97 gl_field_button_menu_init (glFieldButtonMenu *this)
  98 {
  99         gl_debug (DEBUG_FIELD_BUTTON, "START");
 100
 101         this->priv = g_new0 (glFieldButtonMenuPrivate, 1);
 102
 103         gl_debug (DEBUG_FIELD_BUTTON, "END");
 104 }
 105
 106
 107 static void
 108 gl_field_button_menu_finalize (GObject *object)
 109 {
 110         glFieldButtonMenu *this = GL_FIELD_BUTTON_MENU (object);
 111         GList           *p;
 112         GtkWidget       *menu_item;
 113         gchar           *key;
 114
 115         gl_debug (DEBUG_FIELD_BUTTON, "START");
 116
 117         g_return_if_fail (object != NULL);
 118         g_return_if_fail (GL_IS_FIELD_BUTTON_MENU (object));
 119
 120         for ( p = this->priv->menu_items; p != NULL; p = p->next )
 121         {
 122                 menu_item = GTK_WIDGET (p->data);
 123                 key = g_object_get_data (G_OBJECT (menu_item), "key");
 124                 g_free (key);
 125         }
 126         g_list_free (this->priv->menu_items);
 127         g_free (this->priv);
 128
 129         G_OBJECT_CLASS (gl_field_button_menu_parent_class)->finalize (object);
 130
 131         gl_debug (DEBUG_FIELD_BUTTON, "END");
 132 }
 133
 134
 135 GtkWidget *
 136 gl_field_button_menu_new (void)
 137 {
 138         glFieldButtonMenu *this;
 139
 140         gl_debug (DEBUG_FIELD_BUTTON, "START");
 141
 142         this = g_object_new (gl_field_button_menu_get_type (), NULL);
 143
 144         gl_debug (DEBUG_FIELD_BUTTON, "END");
 145
 146         return GTK_WIDGET (this);
 147 }
 148
 149
 150 /*--------------------------------------------------------------------------*/
 151 /* PRIVATE.  Menu item activation callback.                                 */
 152 /*--------------------------------------------------------------------------*/
 153 static void
 154 activate_cb (GtkMenuItem       *menu_item,
 155              glFieldButtonMenu *this)
 156 {
 157         gchar *key;
 158
 159         gl_debug (DEBUG_FIELD_BUTTON, "START");
 160
 161         key = g_object_get_data (G_OBJECT (menu_item), "key");
 162         gl_debug (DEBUG_FIELD_BUTTON, "Key activated: \"%s\"\n", key );
 163
 164         g_signal_emit (G_OBJECT (this), signals[KEY_SELECTED], 0, key);
 165
 166         gl_debug (DEBUG_FIELD_BUTTON, "END");
 167 }
 168
 169
 170 /****************************************************************************/
 171 /* set key names.                                                           */
 172 /****************************************************************************/
 173 void
 174 gl_field_button_menu_set_keys (glFieldButtonMenu *this,
 175                                GList             *key_list)
 176 {
 177         GList     *p;
 178         GtkWidget *menu_item;
 179         gchar     *key;
 180         gint       i, i_row, i_col;
 181
 182         gl_debug (DEBUG_FIELD_BUTTON, "START");
 183
 184         /*
 185          * Remove all old menu items.
 186          */
 187         for ( p = this->priv->menu_items; p != NULL; p = p->next )
 188         {
 189                 menu_item = GTK_WIDGET (p->data);
 190                 key = g_object_get_data (G_OBJECT (menu_item), "key");
 191                 g_free (key);
 192                 gtk_container_remove (GTK_CONTAINER (this), menu_item);
 193         }
 194         g_list_free (this->priv->menu_items);
 195         this->priv->menu_items = NULL;
 196         gtk_widget_unrealize (GTK_WIDGET (this)); /* Start over with new Gdk resources. */
 197
 198         /*
 199          * Add new menu items.
 200          */
 201         for ( p = key_list, i = 0; p != NULL; p = p->next, i++ )
 202         {
 203                 if ( p->data && strlen (p->data) )
 204                 {
 205
 206                         gl_debug (DEBUG_FIELD_BUTTON, "Adding key: %s", p->data);
 207
 208                         menu_item = gtk_menu_item_new_with_label (p->data);
 209                         gtk_widget_show (menu_item);
 210                         g_object_set_data (G_OBJECT (menu_item), "key", g_strdup (p->data));
 211                         g_signal_connect (G_OBJECT (menu_item), "activate",
 212                                           G_CALLBACK (activate_cb), this);
 213                         this->priv->menu_items =
 214                                 g_list_append (this->priv->menu_items, menu_item);
 215
 216                         i_row = i % MAX_MENU_ROWS;
 217                         i_col = i / MAX_MENU_ROWS;
 218                         gtk_menu_attach (GTK_MENU (this), menu_item, i_col, i_col+1, i_row, i_row+1);
 219                 }
 220         }
 221
 222         gl_debug (DEBUG_FIELD_BUTTON, "END");
 223 }
 224
 225
 226
 227 /*
 228  * Local Variables:       -- emacs
 229  * mode: C                -- emacs
 230  * c-basic-offset: 8      -- emacs
 231  * tab-width: 8           -- emacs
 232  * indent-tabs-mode: nil  -- emacs
 233  * End:                   -- emacs
 234  */