Pileus Git - ~andy/gtk/blob - gtk/gtkfilechooserdialog.c

   1 /* GTK - The GIMP Toolkit
   2  * gtkfilechooserdialog.c: File selector dialog
   3  * Copyright (C) 2003, Red Hat, Inc.
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this library; if not, write to the
  17  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18  * Boston, MA 02111-1307, USA.
  19  */
  20
  21 #include "gtkfilechooserdialog.h"
  22 #include "gtkfilechooserwidget.h"
  23 #include "gtkfilechooserutils.h"
  24 #include "gtkfilesystem.h"
  25 #include "gtktypebuiltins.h"
  26
  27 #include <stdarg.h>
  28
  29 #define NUM_LINES 40
  30 #define NUM_CHARS 50
  31
  32 struct _GtkFileChooserDialogPrivate
  33 {
  34   GtkWidget *widget;
  35
  36   char *file_system;
  37 };
  38
  39 #define GTK_FILE_CHOOSER_DIALOG_GET_PRIVATE(o)  (GTK_FILE_CHOOSER_DIALOG (o)->priv)
  40
  41 static void gtk_file_chooser_dialog_class_init (GtkFileChooserDialogClass *class);
  42 static void gtk_file_chooser_dialog_init       (GtkFileChooserDialog      *dialog);
  43 static void gtk_file_chooser_dialog_finalize   (GObject                   *object);
  44
  45 static GObject* gtk_file_chooser_dialog_constructor  (GType                  type,
  46                                                       guint                  n_construct_properties,
  47                                                       GObjectConstructParam *construct_params);
  48 static void     gtk_file_chooser_dialog_set_property (GObject               *object,
  49                                                       guint                  prop_id,
  50                                                       const GValue          *value,
  51                                                       GParamSpec            *pspec);
  52 static void     gtk_file_chooser_dialog_get_property (GObject               *object,
  53                                                       guint                  prop_id,
  54                                                       GValue                *value,
  55                                                       GParamSpec            *pspec);
  56
  57 static void gtk_file_chooser_dialog_realize        (GtkWidget *widget);
  58 static void gtk_file_chooser_dialog_style_set      (GtkWidget *widget,
  59                                                     GtkStyle  *previous_style);
  60 static void gtk_file_chooser_dialog_screen_changed (GtkWidget *widget,
  61                                                     GdkScreen *previous_screen);
  62
  63 static GObjectClass *parent_class;
  64
  65 GType
  66 gtk_file_chooser_dialog_get_type (void)
  67 {
  68   static GType file_chooser_dialog_type = 0;
  69
  70   if (!file_chooser_dialog_type)
  71     {
  72       static const GTypeInfo file_chooser_dialog_info =
  73       {
  74         sizeof (GtkFileChooserDialogClass),
  75         NULL,           /* base_init */
  76         NULL,           /* base_finalize */
  77         (GClassInitFunc) gtk_file_chooser_dialog_class_init,
  78         NULL,           /* class_finalize */
  79         NULL,           /* class_data */
  80         sizeof (GtkFileChooserDialog),
  81         0,              /* n_preallocs */
  82         (GInstanceInitFunc) gtk_file_chooser_dialog_init,
  83       };
  84
  85       static const GInterfaceInfo file_chooser_info =
  86       {
  87         (GInterfaceInitFunc) _gtk_file_chooser_delegate_iface_init, /* interface_init */
  88         NULL,                                                       /* interface_finalize */
  89         NULL                                                        /* interface_data */
  90       };
  91
  92       file_chooser_dialog_type = g_type_register_static (GTK_TYPE_DIALOG, "GtkFileChooserDialog",
  93                                                          &file_chooser_dialog_info, 0);
  94       g_type_add_interface_static (file_chooser_dialog_type,
  95                                    GTK_TYPE_FILE_CHOOSER,
  96                                    &file_chooser_info);
  97     }
  98
  99   return file_chooser_dialog_type;
 100 }
 101
 102 static void
 103 gtk_file_chooser_dialog_class_init (GtkFileChooserDialogClass *class)
 104 {
 105   GObjectClass *gobject_class = G_OBJECT_CLASS (class);
 106   GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
 107
 108   parent_class = g_type_class_peek_parent (class);
 109
 110   gobject_class->constructor = gtk_file_chooser_dialog_constructor;
 111   gobject_class->set_property = gtk_file_chooser_dialog_set_property;
 112   gobject_class->get_property = gtk_file_chooser_dialog_get_property;
 113   gobject_class->finalize = gtk_file_chooser_dialog_finalize;
 114
 115   widget_class->realize = gtk_file_chooser_dialog_realize;
 116   widget_class->style_set = gtk_file_chooser_dialog_style_set;
 117   widget_class->screen_changed = gtk_file_chooser_dialog_screen_changed;
 118
 119   _gtk_file_chooser_install_properties (gobject_class);
 120
 121   g_type_class_add_private (class, sizeof (GtkFileChooserDialogPrivate));
 122 }
 123
 124 static void
 125 gtk_file_chooser_dialog_init (GtkFileChooserDialog *dialog)
 126 {
 127   GtkFileChooserDialogPrivate *priv = G_TYPE_INSTANCE_GET_PRIVATE (dialog,
 128                                                                    GTK_TYPE_FILE_CHOOSER_DIALOG,
 129                                                                    GtkFileChooserDialogPrivate);
 130   dialog->priv = priv;
 131
 132   gtk_dialog_set_has_separator (GTK_DIALOG (dialog), FALSE);
 133 }
 134
 135 static void
 136 gtk_file_chooser_dialog_finalize (GObject *object)
 137 {
 138   GtkFileChooserDialog *dialog = GTK_FILE_CHOOSER_DIALOG (object);
 139
 140   g_free (dialog->priv->file_system);
 141 }
 142
 143 /* Callback used when the user activates a file in the file chooser widget */
 144 static void
 145 file_chooser_widget_file_activated (GtkFileChooser       *chooser,
 146                                     GtkFileChooserDialog *dialog)
 147 {
 148   gtk_window_activate_default (GTK_WINDOW (dialog));
 149 }
 150
 151 static GObject*
 152 gtk_file_chooser_dialog_constructor (GType                  type,
 153                                      guint                  n_construct_properties,
 154                                      GObjectConstructParam *construct_params)
 155 {
 156   GtkFileChooserDialogPrivate *priv;
 157   GObject *object;
 158
 159   object = parent_class->constructor (type,
 160                                       n_construct_properties,
 161                                       construct_params);
 162   priv = GTK_FILE_CHOOSER_DIALOG_GET_PRIVATE (object);
 163
 164   gtk_widget_push_composite_child ();
 165
 166   if (priv->file_system)
 167     priv->widget = g_object_new (GTK_TYPE_FILE_CHOOSER_WIDGET,
 168                                  "file-system-backend", priv->file_system,
 169                                  NULL);
 170   else
 171     priv->widget = g_object_new (GTK_TYPE_FILE_CHOOSER_WIDGET, NULL);
 172
 173   g_signal_connect (priv->widget, "file-activated",
 174                     G_CALLBACK (file_chooser_widget_file_activated), object);
 175
 176   gtk_box_pack_start (GTK_BOX (GTK_DIALOG (object)->vbox), priv->widget, TRUE, TRUE, 0);
 177   gtk_widget_show (priv->widget);
 178
 179   _gtk_file_chooser_set_delegate (GTK_FILE_CHOOSER (object),
 180                                   GTK_FILE_CHOOSER (priv->widget));
 181
 182   gtk_widget_pop_composite_child ();
 183
 184   return object;
 185 }
 186
 187 static void
 188 gtk_file_chooser_dialog_set_property (GObject         *object,
 189                                       guint            prop_id,
 190                                       const GValue    *value,
 191                                       GParamSpec      *pspec)
 192
 193 {
 194   GtkFileChooserDialogPrivate *priv = GTK_FILE_CHOOSER_DIALOG_GET_PRIVATE (object);
 195
 196   switch (prop_id)
 197     {
 198     case GTK_FILE_CHOOSER_PROP_FILE_SYSTEM_BACKEND:
 199       g_free (priv->file_system);
 200       priv->file_system = g_value_dup_string (value);
 201       break;
 202     default:
 203       g_object_set_property (G_OBJECT (priv->widget), pspec->name, value);
 204       break;
 205     }
 206 }
 207
 208 static void
 209 gtk_file_chooser_dialog_get_property (GObject         *object,
 210                                       guint            prop_id,
 211                                       GValue          *value,
 212                                       GParamSpec      *pspec)
 213 {
 214   GtkFileChooserDialogPrivate *priv = GTK_FILE_CHOOSER_DIALOG_GET_PRIVATE (object);
 215
 216   g_object_get_property (G_OBJECT (priv->widget), pspec->name, value);
 217 }
 218
 219 static void
 220 set_default_size (GtkFileChooserDialog *dialog)
 221 {
 222   GtkWidget *widget;
 223   GtkWindow *window;
 224   int default_width, default_height;
 225   int width, height;
 226   int font_size;
 227   GdkScreen *screen;
 228   int monitor_num;
 229   GtkRequisition req;
 230   GdkRectangle monitor;
 231
 232   widget = GTK_WIDGET (dialog);
 233   window = GTK_WINDOW (dialog);
 234
 235   /* Size based on characters */
 236
 237   font_size = pango_font_description_get_size (widget->style->font_desc);
 238   font_size = PANGO_PIXELS (font_size);
 239
 240   width = font_size * NUM_CHARS;
 241   height = font_size * NUM_LINES;
 242
 243   /* Use at least the requisition size... */
 244
 245   gtk_widget_size_request (widget, &req);
 246   width = MAX (width, req.width);
 247   height = MAX (height, req.height);
 248
 249   /* ... but no larger than the monitor */
 250
 251   screen = gtk_widget_get_screen (widget);
 252   monitor_num = gdk_screen_get_monitor_at_window (screen, widget->window);
 253
 254   gdk_screen_get_monitor_geometry (screen, monitor_num, &monitor);
 255
 256   width = MIN (width, monitor.width * 3 / 4);
 257   height = MIN (height, monitor.height * 3 / 4);
 258
 259   /* Set size */
 260
 261   gtk_window_get_default_size (window, &default_width, &default_height);
 262
 263   gtk_window_set_default_size (window,
 264                                (default_width == -1) ? width : default_width,
 265                                (default_height == -1) ? height : default_height);
 266 }
 267
 268 static void
 269 gtk_file_chooser_dialog_realize (GtkWidget *widget)
 270 {
 271   GTK_WIDGET_CLASS (parent_class)->realize (widget);
 272   set_default_size (GTK_FILE_CHOOSER_DIALOG (widget));
 273 }
 274
 275 static void
 276 gtk_file_chooser_dialog_style_set (GtkWidget *widget,
 277                                    GtkStyle  *previous_style)
 278 {
 279   GtkDialog *dialog;
 280
 281   if (GTK_WIDGET_CLASS (parent_class)->style_set)
 282     GTK_WIDGET_CLASS (parent_class)->style_set (widget, previous_style);
 283
 284   if (GTK_WIDGET_REALIZED (widget))
 285     set_default_size (GTK_FILE_CHOOSER_DIALOG (widget));
 286
 287   dialog = GTK_DIALOG (widget);
 288
 289   /* Override the style properties with HIG-compliant spacings.  Ugh.
 290    * http://developer.gnome.org/projects/gup/hig/1.0/layout.html#layout-dialogs
 291    * http://developer.gnome.org/projects/gup/hig/1.0/windows.html#alert-spacing
 292    */
 293
 294   gtk_container_set_border_width (GTK_CONTAINER (dialog->vbox), 12);
 295   gtk_box_set_spacing (GTK_BOX (dialog->vbox), 24);
 296
 297   gtk_container_set_border_width (GTK_CONTAINER (dialog->action_area), 0);
 298   gtk_box_set_spacing (GTK_BOX (dialog->action_area), 6);
 299 }
 300
 301 static void
 302 gtk_file_chooser_dialog_screen_changed (GtkWidget *widget,
 303                                         GdkScreen *previous_screen)
 304 {
 305   if (GTK_WIDGET_CLASS (parent_class)->screen_changed)
 306     GTK_WIDGET_CLASS (parent_class)->screen_changed (widget, previous_screen);
 307
 308   if (GTK_WIDGET_REALIZED (widget))
 309     set_default_size (GTK_FILE_CHOOSER_DIALOG (widget));
 310 }
 311
 312 static GtkWidget *
 313 gtk_file_chooser_dialog_new_valist (const gchar          *title,
 314                                     GtkWindow            *parent,
 315                                     GtkFileChooserAction  action,
 316                                     const gchar          *backend,
 317                                     const gchar          *first_button_text,
 318                                     va_list               varargs)
 319 {
 320   GtkWidget *result;
 321   const char *button_text = first_button_text;
 322   gint response_id;
 323
 324   result = g_object_new (GTK_TYPE_FILE_CHOOSER_DIALOG,
 325                          "title", title,
 326                          "action", action,
 327                          "file-system-backend", backend,
 328                          NULL);
 329
 330   if (parent)
 331     gtk_window_set_transient_for (GTK_WINDOW (result), parent);
 332
 333   while (button_text)
 334     {
 335       response_id = va_arg (varargs, gint);
 336       gtk_dialog_add_button (GTK_DIALOG (result), button_text, response_id);
 337       button_text = va_arg (varargs, const gchar *);
 338     }
 339
 340   return result;
 341 }
 342
 343 /**
 344  * gtk_file_chooser_dialog_new:
 345  * @title: Title of the dialog, or %NULL
 346  * @parent: Transient parent of the dialog, or %NULL
 347  * @action: Open or save mode for the dialog
 348  * @first_button_text: stock ID or text to go in the first button, or %NULL
 349  * @Varargs: response ID for the first button, then additional (button, id) pairs, ending with %NULL
 350  *
 351  * Creates a new #GtkFileChooserDialog.  This function is analogous to
 352  * gtk_dialog_new_with_buttons().
 353  *
 354  * Return value: a new #GtkFileChooserDialog
 355  *
 356  * Since: 2.4
 357  **/
 358 GtkWidget *
 359 gtk_file_chooser_dialog_new (const gchar         *title,
 360                              GtkWindow           *parent,
 361                              GtkFileChooserAction action,
 362                              const gchar         *first_button_text,
 363                              ...)
 364 {
 365   GtkWidget *result;
 366   va_list varargs;
 367
 368   va_start (varargs, first_button_text);
 369   result = gtk_file_chooser_dialog_new_valist (title, parent, action,
 370                                                NULL, first_button_text,
 371                                                varargs);
 372   va_end (varargs);
 373
 374   return result;
 375 }
 376
 377 /**
 378  * gtk_file_chooser_dialog_new_with_backend:
 379  * @title: Title of the dialog, or %NULL
 380  * @parent: Transient parent of the dialog, or %NULL
 381  * @backend: The name of the specific filesystem backend to use.
 382  * @action: Open or save mode for the dialog
 383  * @first_button_text: stock ID or text to go in the first button, or %NULL
 384  * @Varargs: response ID for the first button, then additional (button, id) pairs, ending with %NULL
 385  *
 386  * Creates a new #GtkFileChooserDialog with a specified backend. This is
 387  * especially useful if you use gtk_file_chooser_set_local_only() to allow
 388  * non-local files and you use a more expressive vfs, such as gnome-vfs,
 389  * to load files.
 390  *
 391  * Return value: a new #GtkFileChooserDialog
 392  *
 393  * Since: 2.4
 394  **/
 395 GtkWidget *
 396 gtk_file_chooser_dialog_new_with_backend (const gchar          *title,
 397                                           GtkWindow            *parent,
 398                                           GtkFileChooserAction  action,
 399                                           const gchar          *backend,
 400                                           const gchar          *first_button_text,
 401                                           ...)
 402 {
 403   GtkWidget *result;
 404   va_list varargs;
 405
 406   va_start (varargs, first_button_text);
 407   result = gtk_file_chooser_dialog_new_valist (title, parent, action,
 408                                                backend, first_button_text,
 409                                                varargs);
 410   va_end (varargs);
 411
 412   return result;
 413 }