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 "gtkfilechooserembed.h"
  25 #include "gtkfilesystem.h"
  26 #include "gtktypebuiltins.h"
  27
  28 #include <stdarg.h>
  29
  30 struct _GtkFileChooserDialogPrivate
  31 {
  32   GtkWidget *widget;
  33
  34   char *file_system;
  35
  36   /* for use with GtkFileChooserEmbed */
  37   gint default_width;
  38   gint default_height;
  39 };
  40
  41 #define GTK_FILE_CHOOSER_DIALOG_GET_PRIVATE(o)  (GTK_FILE_CHOOSER_DIALOG (o)->priv)
  42
  43 static void gtk_file_chooser_dialog_class_init (GtkFileChooserDialogClass *class);
  44 static void gtk_file_chooser_dialog_init       (GtkFileChooserDialog      *dialog);
  45 static void gtk_file_chooser_dialog_finalize   (GObject                   *object);
  46
  47 static GObject* gtk_file_chooser_dialog_constructor  (GType                  type,
  48                                                       guint                  n_construct_properties,
  49                                                       GObjectConstructParam *construct_params);
  50 static void     gtk_file_chooser_dialog_set_property (GObject               *object,
  51                                                       guint                  prop_id,
  52                                                       const GValue          *value,
  53                                                       GParamSpec            *pspec);
  54 static void     gtk_file_chooser_dialog_get_property (GObject               *object,
  55                                                       guint                  prop_id,
  56                                                       GValue                *value,
  57                                                       GParamSpec            *pspec);
  58
  59 static void     gtk_file_chooser_dialog_style_set    (GtkWidget             *widget,
  60                                                       GtkStyle              *previous_style);
  61
  62 static GObjectClass *parent_class;
  63
  64 GType
  65 gtk_file_chooser_dialog_get_type (void)
  66 {
  67   static GType file_chooser_dialog_type = 0;
  68
  69   if (!file_chooser_dialog_type)
  70     {
  71       static const GTypeInfo file_chooser_dialog_info =
  72       {
  73         sizeof (GtkFileChooserDialogClass),
  74         NULL,           /* base_init */
  75         NULL,           /* base_finalize */
  76         (GClassInitFunc) gtk_file_chooser_dialog_class_init,
  77         NULL,           /* class_finalize */
  78         NULL,           /* class_data */
  79         sizeof (GtkFileChooserDialog),
  80         0,              /* n_preallocs */
  81         (GInstanceInitFunc) gtk_file_chooser_dialog_init,
  82       };
  83
  84       static const GInterfaceInfo file_chooser_info =
  85       {
  86         (GInterfaceInitFunc) _gtk_file_chooser_delegate_iface_init, /* interface_init */
  87         NULL,                                                       /* interface_finalize */
  88         NULL                                                        /* interface_data */
  89       };
  90
  91       file_chooser_dialog_type = g_type_register_static (GTK_TYPE_DIALOG, "GtkFileChooserDialog",
  92                                                          &file_chooser_dialog_info, 0);
  93       g_type_add_interface_static (file_chooser_dialog_type,
  94                                    GTK_TYPE_FILE_CHOOSER,
  95                                    &file_chooser_info);
  96     }
  97
  98   return file_chooser_dialog_type;
  99 }
 100
 101 static void
 102 gtk_file_chooser_dialog_class_init (GtkFileChooserDialogClass *class)
 103 {
 104   GObjectClass *gobject_class = G_OBJECT_CLASS (class);
 105   GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
 106
 107   parent_class = g_type_class_peek_parent (class);
 108
 109   gobject_class->constructor = gtk_file_chooser_dialog_constructor;
 110   gobject_class->set_property = gtk_file_chooser_dialog_set_property;
 111   gobject_class->get_property = gtk_file_chooser_dialog_get_property;
 112   gobject_class->finalize = gtk_file_chooser_dialog_finalize;
 113
 114   widget_class->style_set = gtk_file_chooser_dialog_style_set;
 115
 116   _gtk_file_chooser_install_properties (gobject_class);
 117
 118   g_type_class_add_private (class, sizeof (GtkFileChooserDialogPrivate));
 119 }
 120
 121 static void
 122 gtk_file_chooser_dialog_init (GtkFileChooserDialog *dialog)
 123 {
 124   GtkFileChooserDialogPrivate *priv = G_TYPE_INSTANCE_GET_PRIVATE (dialog,
 125                                                                    GTK_TYPE_FILE_CHOOSER_DIALOG,
 126                                                                    GtkFileChooserDialogPrivate);
 127   dialog->priv = priv;
 128   dialog->priv->default_width = -1;
 129   dialog->priv->default_height = -1;
 130
 131   gtk_dialog_set_has_separator (GTK_DIALOG (dialog), FALSE);
 132 }
 133
 134 static void
 135 gtk_file_chooser_dialog_finalize (GObject *object)
 136 {
 137   GtkFileChooserDialog *dialog = GTK_FILE_CHOOSER_DIALOG (object);
 138
 139   g_free (dialog->priv->file_system);
 140
 141   G_OBJECT_CLASS (parent_class)->finalize (object);
 142 }
 143
 144 /* Callback used when the user activates a file in the file chooser widget */
 145 static void
 146 file_chooser_widget_file_activated (GtkFileChooser       *chooser,
 147                                     GtkFileChooserDialog *dialog)
 148 {
 149   gtk_window_activate_default (GTK_WINDOW (dialog));
 150 }
 151
 152 static void
 153 file_chooser_widget_resizable_hints_changed (GtkWidget            *widget,
 154                                              GtkFileChooserDialog *dialog)
 155 {
 156   GtkFileChooserDialogPrivate *priv;
 157   gboolean resize_horizontally;
 158   gboolean resize_vertically;
 159   GdkGeometry geometry;
 160
 161   priv = GTK_FILE_CHOOSER_DIALOG_GET_PRIVATE (dialog);
 162
 163   _gtk_file_chooser_embed_get_resizable_hints (GTK_FILE_CHOOSER_EMBED (priv->widget),
 164                                                &resize_horizontally,
 165                                                &resize_vertically);
 166
 167
 168   geometry.min_width = -1;
 169   geometry.min_height = -1;
 170   geometry.max_width = (resize_horizontally?G_MAXSHORT:-1);
 171   geometry.max_height = (resize_vertically?G_MAXSHORT:-1);
 172
 173   gtk_window_set_geometry_hints (GTK_WINDOW (dialog), NULL,
 174                                  &geometry,
 175                                  GDK_HINT_MIN_SIZE | GDK_HINT_MAX_SIZE);
 176 }
 177
 178 static void
 179 file_chooser_widget_default_size_changed (GtkWidget            *widget,
 180                                           GtkFileChooserDialog *dialog)
 181 {
 182   GtkFileChooserDialogPrivate *priv;
 183   gint extra_width;
 184   gint extra_height;
 185   gint width, height;
 186   GtkRequisition req;
 187   gboolean resize_horizontally;
 188   gboolean resize_vertically;
 189
 190   priv = GTK_FILE_CHOOSER_DIALOG_GET_PRIVATE (dialog);
 191
 192   /* Force a size request of everything before we start.  This will make sure
 193    * that widget->requisition is meaningful. */
 194   gtk_widget_size_request (GTK_WIDGET (dialog), &req);
 195
 196   /* Determine how much space the rest of the dialog uses compared to priv->widget */
 197   extra_width = GTK_WIDGET (dialog)->requisition.width - priv->widget->requisition.width;
 198   extra_height = GTK_WIDGET (dialog)->requisition.height - priv->widget->requisition.height;
 199
 200   _gtk_file_chooser_embed_get_default_size (GTK_FILE_CHOOSER_EMBED (priv->widget),
 201                                             &width, &height);
 202
 203   width = extra_width + width;
 204   height = extra_height + height;
 205
 206   /* FIXME: We should make sure that we arent' bigger than the current screen */
 207   if (GTK_WIDGET_REALIZED (dialog) &&
 208       priv->default_width > 0 &&
 209       priv->default_height > 0)
 210     {
 211       gint cur_width, cur_height;
 212       gint dx, dy;
 213
 214       gtk_window_get_size (GTK_WINDOW (dialog), &cur_width, &cur_height);
 215
 216       dx = width - priv->default_width;
 217       dy = height - priv->default_height;
 218       gtk_window_resize (GTK_WINDOW (dialog),
 219                          cur_width + dx,
 220                          cur_height + dy);
 221     }
 222   else
 223     {
 224       gtk_window_resize (GTK_WINDOW (dialog), width, height);
 225     }
 226
 227   _gtk_file_chooser_embed_get_resizable_hints (GTK_FILE_CHOOSER_EMBED (priv->widget),
 228                                                &resize_horizontally,
 229                                                &resize_vertically);
 230
 231   /* Only store the size if we can resize in that direction. */
 232   if (resize_horizontally)
 233     priv->default_width = width;
 234   if (resize_vertically)
 235     priv->default_height = height;
 236 }
 237
 238
 239 static GObject*
 240 gtk_file_chooser_dialog_constructor (GType                  type,
 241                                      guint                  n_construct_properties,
 242                                      GObjectConstructParam *construct_params)
 243 {
 244   GtkFileChooserDialogPrivate *priv;
 245   GObject *object;
 246
 247   object = parent_class->constructor (type,
 248                                       n_construct_properties,
 249                                       construct_params);
 250   priv = GTK_FILE_CHOOSER_DIALOG_GET_PRIVATE (object);
 251
 252   gtk_widget_push_composite_child ();
 253
 254   if (priv->file_system)
 255     priv->widget = g_object_new (GTK_TYPE_FILE_CHOOSER_WIDGET,
 256                                  "file-system-backend", priv->file_system,
 257                                  NULL);
 258   else
 259     priv->widget = g_object_new (GTK_TYPE_FILE_CHOOSER_WIDGET, NULL);
 260
 261   g_signal_connect (priv->widget, "file-activated",
 262                     G_CALLBACK (file_chooser_widget_file_activated), object);
 263   g_signal_connect (priv->widget, "default-size-changed",
 264                     G_CALLBACK (file_chooser_widget_default_size_changed), object);
 265   g_signal_connect (priv->widget, "resizable-hints-changed",
 266                     G_CALLBACK (file_chooser_widget_resizable_hints_changed), object);
 267
 268   gtk_box_pack_start (GTK_BOX (GTK_DIALOG (object)->vbox), priv->widget, TRUE, TRUE, 0);
 269   gtk_widget_show (priv->widget);
 270
 271   _gtk_file_chooser_set_delegate (GTK_FILE_CHOOSER (object),
 272                                   GTK_FILE_CHOOSER (priv->widget));
 273
 274   gtk_widget_pop_composite_child ();
 275
 276   return object;
 277 }
 278
 279 static void
 280 gtk_file_chooser_dialog_set_property (GObject         *object,
 281                                       guint            prop_id,
 282                                       const GValue    *value,
 283                                       GParamSpec      *pspec)
 284
 285 {
 286   GtkFileChooserDialogPrivate *priv = GTK_FILE_CHOOSER_DIALOG_GET_PRIVATE (object);
 287
 288   switch (prop_id)
 289     {
 290     case GTK_FILE_CHOOSER_PROP_FILE_SYSTEM_BACKEND:
 291       g_free (priv->file_system);
 292       priv->file_system = g_value_dup_string (value);
 293       break;
 294     default:
 295       g_object_set_property (G_OBJECT (priv->widget), pspec->name, value);
 296       break;
 297     }
 298 }
 299
 300 static void
 301 gtk_file_chooser_dialog_get_property (GObject         *object,
 302                                       guint            prop_id,
 303                                       GValue          *value,
 304                                       GParamSpec      *pspec)
 305 {
 306   GtkFileChooserDialogPrivate *priv = GTK_FILE_CHOOSER_DIALOG_GET_PRIVATE (object);
 307
 308   g_object_get_property (G_OBJECT (priv->widget), pspec->name, value);
 309 }
 310
 311 #if 0
 312 static void
 313 set_default_size (GtkFileChooserDialog *dialog)
 314 {
 315   GtkWidget *widget;
 316   GtkWindow *window;
 317   int default_width, default_height;
 318   int width, height;
 319   int font_size;
 320   GdkScreen *screen;
 321   int monitor_num;
 322   GtkRequisition req;
 323   GdkRectangle monitor;
 324
 325   widget = GTK_WIDGET (dialog);
 326   window = GTK_WINDOW (dialog);
 327
 328   /* Size based on characters */
 329
 330   font_size = pango_font_description_get_size (widget->style->font_desc);
 331   font_size = PANGO_PIXELS (font_size);
 332
 333   width = font_size * NUM_CHARS;
 334   height = font_size * NUM_LINES;
 335
 336   /* Use at least the requisition size... */
 337
 338   gtk_widget_size_request (widget, &req);
 339   width = MAX (width, req.width);
 340   height = MAX (height, req.height);
 341
 342   /* ... but no larger than the monitor */
 343
 344   screen = gtk_widget_get_screen (widget);
 345   monitor_num = gdk_screen_get_monitor_at_window (screen, widget->window);
 346
 347   gdk_screen_get_monitor_geometry (screen, monitor_num, &monitor);
 348
 349   width = MIN (width, monitor.width * 3 / 4);
 350   height = MIN (height, monitor.height * 3 / 4);
 351
 352   /* Set size */
 353
 354   gtk_window_get_default_size (window, &default_width, &default_height);
 355
 356   gtk_window_set_default_size (window,
 357                                (default_width == -1) ? width : default_width,
 358                                (default_height == -1) ? height : default_height);
 359 }
 360 #endif
 361
 362 static void
 363 gtk_file_chooser_dialog_style_set (GtkWidget *widget,
 364                                    GtkStyle  *previous_style)
 365 {
 366   GtkDialog *dialog;
 367
 368   if (GTK_WIDGET_CLASS (parent_class)->style_set)
 369     GTK_WIDGET_CLASS (parent_class)->style_set (widget, previous_style);
 370
 371   dialog = GTK_DIALOG (widget);
 372
 373   /* Override the style properties with HIG-compliant spacings.  Ugh.
 374    * http://developer.gnome.org/projects/gup/hig/1.0/layout.html#layout-dialogs
 375    * http://developer.gnome.org/projects/gup/hig/1.0/windows.html#alert-spacing
 376    */
 377
 378   gtk_container_set_border_width (GTK_CONTAINER (dialog->vbox), 12);
 379   gtk_box_set_spacing (GTK_BOX (dialog->vbox), 24);
 380
 381   gtk_container_set_border_width (GTK_CONTAINER (dialog->action_area), 0);
 382   gtk_box_set_spacing (GTK_BOX (dialog->action_area), 6);
 383 }
 384
 385 static GtkWidget *
 386 gtk_file_chooser_dialog_new_valist (const gchar          *title,
 387                                     GtkWindow            *parent,
 388                                     GtkFileChooserAction  action,
 389                                     const gchar          *backend,
 390                                     const gchar          *first_button_text,
 391                                     va_list               varargs)
 392 {
 393   GtkWidget *result;
 394   const char *button_text = first_button_text;
 395   gint response_id;
 396
 397   result = g_object_new (GTK_TYPE_FILE_CHOOSER_DIALOG,
 398                          "title", title,
 399                          "action", action,
 400                          "file-system-backend", backend,
 401                          NULL);
 402
 403   if (parent)
 404     gtk_window_set_transient_for (GTK_WINDOW (result), parent);
 405
 406   while (button_text)
 407     {
 408       response_id = va_arg (varargs, gint);
 409       gtk_dialog_add_button (GTK_DIALOG (result), button_text, response_id);
 410       button_text = va_arg (varargs, const gchar *);
 411     }
 412
 413   return result;
 414 }
 415
 416 /**
 417  * gtk_file_chooser_dialog_new:
 418  * @title: Title of the dialog, or %NULL
 419  * @parent: Transient parent of the dialog, or %NULL
 420  * @action: Open or save mode for the dialog
 421  * @first_button_text: stock ID or text to go in the first button, or %NULL
 422  * @Varargs: response ID for the first button, then additional (button, id) pairs, ending with %NULL
 423  *
 424  * Creates a new #GtkFileChooserDialog.  This function is analogous to
 425  * gtk_dialog_new_with_buttons().
 426  *
 427  * Return value: a new #GtkFileChooserDialog
 428  *
 429  * Since: 2.4
 430  **/
 431 GtkWidget *
 432 gtk_file_chooser_dialog_new (const gchar         *title,
 433                              GtkWindow           *parent,
 434                              GtkFileChooserAction action,
 435                              const gchar         *first_button_text,
 436                              ...)
 437 {
 438   GtkWidget *result;
 439   va_list varargs;
 440
 441   va_start (varargs, first_button_text);
 442   result = gtk_file_chooser_dialog_new_valist (title, parent, action,
 443                                                NULL, first_button_text,
 444                                                varargs);
 445   va_end (varargs);
 446
 447   return result;
 448 }
 449
 450 /**
 451  * gtk_file_chooser_dialog_new_with_backend:
 452  * @title: Title of the dialog, or %NULL
 453  * @parent: Transient parent of the dialog, or %NULL
 454  * @backend: The name of the specific filesystem backend to use.
 455  * @action: Open or save mode for the dialog
 456  * @first_button_text: stock ID or text to go in the first button, or %NULL
 457  * @Varargs: response ID for the first button, then additional (button, id) pairs, ending with %NULL
 458  *
 459  * Creates a new #GtkFileChooserDialog with a specified backend. This is
 460  * especially useful if you use gtk_file_chooser_set_local_only() to allow
 461  * non-local files and you use a more expressive vfs, such as gnome-vfs,
 462  * to load files.
 463  *
 464  * Return value: a new #GtkFileChooserDialog
 465  *
 466  * Since: 2.4
 467  **/
 468 GtkWidget *
 469 gtk_file_chooser_dialog_new_with_backend (const gchar          *title,
 470                                           GtkWindow            *parent,
 471                                           GtkFileChooserAction  action,
 472                                           const gchar          *backend,
 473                                           const gchar          *first_button_text,
 474                                           ...)
 475 {
 476   GtkWidget *result;
 477   va_list varargs;
 478
 479   va_start (varargs, first_button_text);
 480   result = gtk_file_chooser_dialog_new_valist (title, parent, action,
 481                                                backend, first_button_text,
 482                                                varargs);
 483   va_end (varargs);
 484
 485   return result;
 486 }