app/properties.c

   1 /* Dia -- an diagram creation/manipulation program
   2  * Copyright (C) 1998 Alexander Larsson
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  17  */
  18
  19 #ifdef HAVE_CONFIG_H
  20 #include <config.h>
  21 #endif
  22
  23 #include <gtk/gtk.h>
  24 #include <gdk/gdkkeysyms.h>
  25
  26 #include "intl.h"
  27 #include "properties.h"
  28 #include "object_ops.h"
  29 #include "connectionpoint_ops.h"
  30 #include "undo.h"
  31 #include "message.h"
  32 #include <string.h>
  33
  34 static GtkWidget *dialog = NULL;
  35 static GtkWidget *dialog_vbox = NULL;
  36 static GtkWidget *object_part = NULL;
  37 static Object *current_obj = NULL;
  38 static Diagram *current_dia = NULL;
  39
  40 static GtkWidget *no_properties_dialog = NULL;
  41
  42 static gint properties_respond(GtkWidget *widget,
  43                                gint       response_id,
  44                                gpointer   data);
  45 static gboolean properties_key_event(GtkWidget *widget,
  46                                      GdkEventKey *event,
  47                                      gpointer data);
  48
  49 static void create_dialog()
  50 {
  51 /*   GtkWidget *actionbox; */
  52 /*   GList *buttons; */
  53
  54   dialog = gtk_dialog_new_with_buttons(
  55              _("Object properties"),
  56              GTK_WINDOW (ddisplay_active()->shell),
  57              GTK_DIALOG_DESTROY_WITH_PARENT,
  58              GTK_STOCK_CLOSE, GTK_RESPONSE_CLOSE,
  59              GTK_STOCK_APPLY, GTK_RESPONSE_APPLY,
  60              GTK_STOCK_OK, GTK_RESPONSE_OK,
  61              NULL);
  62
  63   //GTK_WIDGET_SET_FLAGS (button, GTK_CAN_DEFAULT);
  64   gtk_dialog_set_default_response (GTK_DIALOG(dialog), GTK_RESPONSE_OK);
  65
  66   dialog_vbox = GTK_DIALOG(dialog)->vbox;
  67
  68   gtk_window_set_role(GTK_WINDOW (dialog), "properties_window");
  69
  70   g_signal_connect(G_OBJECT (dialog), "response",
  71                    G_CALLBACK (properties_respond), NULL);
  72   g_signal_connect(G_OBJECT (dialog), "delete_event",
  73                    G_CALLBACK(gtk_widget_hide), NULL);
  74   g_signal_connect(G_OBJECT (dialog), "destroy",
  75                    G_CALLBACK(gtk_widget_destroyed), &dialog);
  76   g_signal_connect(G_OBJECT (dialog), "destroy",
  77                    G_CALLBACK(gtk_widget_destroyed), &dialog_vbox);
  78   g_signal_connect(G_OBJECT (dialog), "key-release-event",
  79                    G_CALLBACK(properties_key_event), NULL);
  80
  81   no_properties_dialog = gtk_label_new(_("This object has no properties."));
  82   gtk_widget_show (no_properties_dialog);
  83   g_object_ref(G_OBJECT(no_properties_dialog));
  84   gtk_object_sink(GTK_OBJECT(no_properties_dialog));
  85 }
  86
  87 static gint
  88 properties_part_destroyed(GtkWidget *widget, gpointer data)
  89 {
  90   if (widget == object_part) {
  91     object_part = NULL;
  92     current_obj = NULL;
  93     current_dia = NULL;
  94   }
  95   return 0;
  96 }
  97
  98 static gint
  99 properties_dialog_destroyed(GtkWidget *widget, gpointer data)
 100 {
 101   dialog = NULL;
 102   return 0;
 103 }
 104
 105 static gboolean
 106 properties_key_event(GtkWidget *widget, GdkEventKey *event, gpointer data)
 107 {
 108   /* These ought to be done automagically by GtkDialog, but aren't.
 109    * Adding them this way makes use of Esc/Enter for other purposes in
 110    * the dialog close the dialog -- not good.
 111    */
 112   /*
 113   if (event->keyval == GDK_Escape) {
 114     gtk_dialog_response(GTK_DIALOG(widget), GTK_RESPONSE_CANCEL);
 115     return TRUE;
 116   }
 117   if (event->keyval == GDK_Return) {
 118     gtk_dialog_response(GTK_DIALOG(widget), GTK_RESPONSE_OK);
 119   }
 120   */
 121   return FALSE;
 122 }
 123
 124 static gint
 125 properties_respond(GtkWidget *widget,
 126                    gint       response_id,
 127                    gpointer   data)
 128 {
 129   ObjectChange *obj_change = NULL;
 130
 131   if (   response_id == GTK_RESPONSE_APPLY
 132       || response_id == GTK_RESPONSE_OK) {
 133     if ((current_obj != NULL) && (current_dia != NULL)) {
 134       object_add_updates(current_obj, current_dia);
 135       obj_change = current_obj->ops->apply_properties(current_obj, object_part);
 136       object_add_updates(current_obj, current_dia);
 137
 138       diagram_update_connections_object(current_dia, current_obj, TRUE);
 139
 140       if (obj_change != NULL) {
 141         undo_object_change(current_dia, current_obj, obj_change);
 142       }
 143
 144       diagram_modified(current_dia);
 145
 146       diagram_object_modified(current_dia, current_obj);
 147
 148       diagram_update_extents(current_dia);
 149
 150       if (obj_change != NULL) {
 151         undo_set_transactionpoint(current_dia->undo);
 152       }  else {
 153         message_warning(_("This object doesn't support Undo/Redo.\n"
 154                         "Undo information erased."));
 155         undo_clear(current_dia->undo);
 156       }
 157
 158       diagram_flush(current_dia);
 159     }
 160   }
 161
 162   if (response_id != GTK_RESPONSE_APPLY)
 163     gtk_widget_hide(widget);
 164
 165   return 0;
 166 }
 167
 168 void
 169 properties_show(Diagram *dia, Object *obj)
 170 {
 171   GtkWidget *properties = NULL;
 172
 173   if (obj != NULL)
 174     properties = obj->ops->get_properties(obj, FALSE);
 175
 176   if (dialog == NULL)
 177     create_dialog();
 178
 179   if (obj==NULL) {
 180     /* Hide dialog when no object is selected */
 181     gtk_widget_hide(dialog);
 182     return;
 183   }
 184
 185   if (properties == NULL) { /* No properties or no object */
 186     properties = no_properties_dialog;
 187     obj = NULL;
 188     dia = NULL;
 189   }
 190
 191   if (object_part != NULL) {
 192     gtk_container_remove(GTK_CONTAINER(dialog_vbox), object_part);
 193     object_part = NULL;
 194     current_obj = NULL;
 195     current_dia = NULL;
 196   }
 197
 198   if (obj != NULL) {
 199     ObjectType *otype;
 200     gchar *buf;
 201
 202     otype = obj->type;
 203     buf = g_strconcat(_("Properties: "), otype->name, NULL);
 204     gtk_window_set_title(GTK_WINDOW(dialog), buf);
 205     g_free(buf);
 206   } else {
 207     gtk_window_set_title(GTK_WINDOW(dialog), _("Object properties:"));
 208   }
 209
 210   g_signal_connect (G_OBJECT (properties), "destroy",
 211                   G_CALLBACK(properties_part_destroyed), NULL);
 212   g_signal_connect (G_OBJECT (dialog), "destroy",
 213                   G_CALLBACK(properties_dialog_destroyed), NULL);
 214
 215   gtk_box_pack_start(GTK_BOX(dialog_vbox), properties, TRUE, TRUE, 0);
 216
 217   gtk_widget_show (properties);
 218
 219   if (obj != current_obj)
 220     gtk_window_resize (GTK_WINDOW(dialog), 1, 1); /* resize to minimum */
 221   gtk_window_set_transient_for(GTK_WINDOW(dialog),
 222                                GTK_WINDOW (ddisplay_active()->shell));
 223   gtk_window_present (GTK_WINDOW (dialog));
 224   object_part = properties;
 225   current_obj = obj;
 226   current_dia = dia;
 227 }
 228
 229 void
 230 properties_hide_if_shown(Diagram *dia, Object *obj)
 231 {
 232   if (current_obj == obj) {
 233     properties_show(dia, NULL);
 234   }
 235 }
 236
 237 void
 238 properties_update_if_shown(Diagram *dia, Object *obj)
 239 {
 240   if (current_obj == obj) {
 241     properties_show(dia, obj);
 242   }
 243 }