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   G_OBJECT_CLASS (parent_class)->finalize (object);
 143 }
 144
 145 /* Callback used when the user activates a file in the file chooser widget */
 146 static void
 147 file_chooser_widget_file_activated (GtkFileChooser       *chooser,
 148                                     GtkFileChooserDialog *dialog)
 149 {
 150   gtk_window_activate_default (GTK_WINDOW (dialog));
 151 }
 152
 153 static GObject*
 154 gtk_file_chooser_dialog_constructor (GType                  type,
 155                                      guint                  n_construct_properties,
 156                                      GObjectConstructParam *construct_params)
 157 {
 158   GtkFileChooserDialogPrivate *priv;
 159   GObject *object;
 160
 161   object = parent_class->constructor (type,
 162                                       n_construct_properties,
 163                                       construct_params);
 164   priv = GTK_FILE_CHOOSER_DIALOG_GET_PRIVATE (object);
 165
 166   gtk_widget_push_composite_child ();
 167
 168   if (priv->file_system)
 169     priv->widget = g_object_new (GTK_TYPE_FILE_CHOOSER_WIDGET,
 170                                  "file-system-backend", priv->file_system,
 171                                  NULL);
 172   else
 173     priv->widget = g_object_new (GTK_TYPE_FILE_CHOOSER_WIDGET, NULL);
 174
 175   g_signal_connect (priv->widget, "file-activated",
 176                     G_CALLBACK (file_chooser_widget_file_activated), object);
 177
 178   gtk_box_pack_start (GTK_BOX (GTK_DIALOG (object)->vbox), priv->widget, TRUE, TRUE, 0);
 179   gtk_widget_show (priv->widget);
 180
 181   _gtk_file_chooser_set_delegate (GTK_FILE_CHOOSER (object),
 182                                   GTK_FILE_CHOOSER (priv->widget));
 183
 184   gtk_widget_pop_composite_child ();
 185
 186   return object;
 187 }
 188
 189 static void
 190 gtk_file_chooser_dialog_set_property (GObject         *object,
 191                                       guint            prop_id,
 192                                       const GValue    *value,
 193                                       GParamSpec      *pspec)
 194
 195 {
 196   GtkFileChooserDialogPrivate *priv = GTK_FILE_CHOOSER_DIALOG_GET_PRIVATE (object);
 197
 198   switch (prop_id)
 199     {
 200     case GTK_FILE_CHOOSER_PROP_FILE_SYSTEM_BACKEND:
 201       g_free (priv->file_system);
 202       priv->file_system = g_value_dup_string (value);
 203       break;
 204     default:
 205       g_object_set_property (G_OBJECT (priv->widget), pspec->name, value);
 206       break;
 207     }
 208 }
 209
 210 static void
 211 gtk_file_chooser_dialog_get_property (GObject         *object,
 212                                       guint            prop_id,
 213                                       GValue          *value,
 214                                       GParamSpec      *pspec)
 215 {
 216   GtkFileChooserDialogPrivate *priv = GTK_FILE_CHOOSER_DIALOG_GET_PRIVATE (object);
 217
 218   g_object_get_property (G_OBJECT (priv->widget), pspec->name, value);
 219 }
 220
 221 static void
 222 set_default_size (GtkFileChooserDialog *dialog)
 223 {
 224   GtkWidget *widget;
 225   GtkWindow *window;
 226   int default_width, default_height;
 227   int width, height;
 228   int font_size;
 229   GdkScreen *screen;
 230   int monitor_num;
 231   GtkRequisition req;
 232   GdkRectangle monitor;
 233
 234   widget = GTK_WIDGET (dialog);
 235   window = GTK_WINDOW (dialog);
 236
 237   /* Size based on characters */
 238
 239   font_size = pango_font_description_get_size (widget->style->font_desc);
 240   font_size = PANGO_PIXELS (font_size);
 241
 242   width = font_size * NUM_CHARS;
 243   height = font_size * NUM_LINES;
 244
 245   /* Use at least the requisition size... */
 246
 247   gtk_widget_size_request (widget, &req);
 248   width = MAX (width, req.width);
 249   height = MAX (height, req.height);
 250
 251   /* ... but no larger than the monitor */
 252
 253   screen = gtk_widget_get_screen (widget);
 254   monitor_num = gdk_screen_get_monitor_at_window (screen, widget->window);
 255
 256   gdk_screen_get_monitor_geometry (screen, monitor_num, &monitor);
 257
 258   width = MIN (width, monitor.width * 3 / 4);
 259   height = MIN (height, monitor.height * 3 / 4);
 260
 261   /* Set size */
 262
 263   gtk_window_get_default_size (window, &default_width, &default_height);
 264
 265   gtk_window_set_default_size (window,
 266                                (default_width == -1) ? width : default_width,
 267                                (default_height == -1) ? height : default_height);
 268 }
 269
 270 static void
 271 gtk_file_chooser_dialog_realize (GtkWidget *widget)
 272 {
 273   GTK_WIDGET_CLASS (parent_class)->realize (widget);
 274   set_default_size (GTK_FILE_CHOOSER_DIALOG (widget));
 275 }
 276
 277 static void
 278 gtk_file_chooser_dialog_style_set (GtkWidget *widget,
 279                                    GtkStyle  *previous_style)
 280 {
 281   GtkDialog *dialog;
 282
 283   if (GTK_WIDGET_CLASS (parent_class)->style_set)
 284     GTK_WIDGET_CLASS (parent_class)->style_set (widget, previous_style);
 285
 286   if (GTK_WIDGET_REALIZED (widget))
 287     set_default_size (GTK_FILE_CHOOSER_DIALOG (widget));
 288
 289   dialog = GTK_DIALOG (widget);
 290
 291   /* Override the style properties with HIG-compliant spacings.  Ugh.
 292    * http://developer.gnome.org/projects/gup/hig/1.0/layout.html#layout-dialogs
 293    * http://developer.gnome.org/projects/gup/hig/1.0/windows.html#alert-spacing
 294    */
 295
 296   gtk_container_set_border_width (GTK_CONTAINER (dialog->vbox), 12);
 297   gtk_box_set_spacing (GTK_BOX (dialog->vbox), 24);
 298
 299   gtk_container_set_border_width (GTK_CONTAINER (dialog->action_area), 0);
 300   gtk_box_set_spacing (GTK_BOX (dialog->action_area), 6);
 301 }
 302
 303 static void
 304 gtk_file_chooser_dialog_screen_changed (GtkWidget *widget,
 305                                         GdkScreen *previous_screen)
 306 {
 307   if (GTK_WIDGET_CLASS (parent_class)->screen_changed)
 308     GTK_WIDGET_CLASS (parent_class)->screen_changed (widget, previous_screen);
 309
 310   if (GTK_WIDGET_REALIZED (widget))
 311     set_default_size (GTK_FILE_CHOOSER_DIALOG (widget));
 312 }
 313
 314 static GtkWidget *
 315 gtk_file_chooser_dialog_new_valist (const gchar          *title,
 316                                     GtkWindow            *parent,
 317                                     GtkFileChooserAction  action,
 318                                     const gchar          *backend,
 319                                     const gchar          *first_button_text,
 320                                     va_list               varargs)
 321 {
 322   GtkWidget *result;
 323   const char *button_text = first_button_text;
 324   gint response_id;
 325
 326   result = g_object_new (GTK_TYPE_FILE_CHOOSER_DIALOG,
 327                          "title", title,
 328                          "action", action,
 329                          "file-system-backend", backend,
 330                          NULL);
 331
 332   if (parent)
 333     gtk_window_set_transient_for (GTK_WINDOW (result), parent);
 334
 335   while (button_text)
 336     {
 337       response_id = va_arg (varargs, gint);
 338       gtk_dialog_add_button (GTK_DIALOG (result), button_text, response_id);
 339       button_text = va_arg (varargs, const gchar *);
 340     }
 341
 342   return result;
 343 }
 344
 345 /**
 346  * gtk_file_chooser_dialog_new:
 347  * @title: Title of the dialog, or %NULL
 348  * @parent: Transient parent of the dialog, or %NULL
 349  * @action: Open or save mode for the dialog
 350  * @first_button_text: stock ID or text to go in the first button, or %NULL
 351  * @Varargs: response ID for the first button, then additional (button, id) pairs, ending with %NULL
 352  *
 353  * Creates a new #GtkFileChooserDialog.  This function is analogous to
 354  * gtk_dialog_new_with_buttons().
 355  *
 356  * Return value: a new #GtkFileChooserDialog
 357  *
 358  * Since: 2.4
 359  **/
 360 GtkWidget *
 361 gtk_file_chooser_dialog_new (const gchar         *title,
 362                              GtkWindow           *parent,
 363                              GtkFileChooserAction action,
 364                              const gchar         *first_button_text,
 365                              ...)
 366 {
 367   GtkWidget *result;
 368   va_list varargs;
 369
 370   va_start (varargs, first_button_text);
 371   result = gtk_file_chooser_dialog_new_valist (title, parent, action,
 372                                                NULL, first_button_text,
 373                                                varargs);
 374   va_end (varargs);
 375
 376   return result;
 377 }
 378
 379 /**
 380  * gtk_file_chooser_dialog_new_with_backend:
 381  * @title: Title of the dialog, or %NULL
 382  * @parent: Transient parent of the dialog, or %NULL
 383  * @backend: The name of the specific filesystem backend to use.
 384  * @action: Open or save mode for the dialog
 385  * @first_button_text: stock ID or text to go in the first button, or %NULL
 386  * @Varargs: response ID for the first button, then additional (button, id) pairs, ending with %NULL
 387  *
 388  * Creates a new #GtkFileChooserDialog with a specified backend. This is
 389  * especially useful if you use gtk_file_chooser_set_local_only() to allow
 390  * non-local files and you use a more expressive vfs, such as gnome-vfs,
 391  * to load files.
 392  *
 393  * Return value: a new #GtkFileChooserDialog
 394  *
 395  * Since: 2.4
 396  **/
 397 GtkWidget *
 398 gtk_file_chooser_dialog_new_with_backend (const gchar          *title,
 399                                           GtkWindow            *parent,
 400                                           GtkFileChooserAction  action,
 401                                           const gchar          *backend,
 402                                           const gchar          *first_button_text,
 403                                           ...)
 404 {
 405   GtkWidget *result;
 406   va_list varargs;
 407
 408   va_start (varargs, first_button_text);
 409   result = gtk_file_chooser_dialog_new_valist (title, parent, action,
 410                                                backend, first_button_text,
 411                                                varargs);
 412   va_end (varargs);
 413
 414   return result;
 415 }