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_default_size_changed (GtkWidget            *widget,
 154                                           GtkFileChooserDialog *dialog)
 155 {
 156   GtkFileChooserDialogPrivate *priv;
 157   gint extra_width;
 158   gint extra_height;
 159   gint width, height;
 160   GtkRequisition req;
 161
 162   priv = GTK_FILE_CHOOSER_DIALOG_GET_PRIVATE (dialog);
 163
 164   /* Force a size request of everything before we start.  This will make sure
 165    * that widget->requisition is meaningful. */
 166   gtk_widget_size_request (GTK_WIDGET (dialog), &req);
 167
 168   /* Determine how much space the rest of the dialog uses compared to priv->widget */
 169   extra_width = GTK_WIDGET (dialog)->requisition.width - priv->widget->requisition.width;
 170   extra_height = GTK_WIDGET (dialog)->requisition.height - priv->widget->requisition.height;
 171
 172   _gtk_file_chooser_embed_get_default_size (GTK_FILE_CHOOSER_EMBED (priv->widget),
 173                                             &width, &height);
 174
 175   width = extra_width + width;
 176   height = extra_height + height;
 177
 178   /* FIXME: We should make sure that we arent' bigger than the current screen */
 179   if (GTK_WIDGET_REALIZED (dialog) &&
 180       priv->default_width > 0 &&
 181       priv->default_height > 0)
 182     {
 183       gint cur_width, cur_height;
 184       gint dx, dy;
 185
 186       gtk_window_get_size (GTK_WINDOW (dialog), &cur_width, &cur_height);
 187
 188       dx = width - priv->default_width;
 189       dy = height - priv->default_height;
 190       gtk_window_resize (GTK_WINDOW (dialog),
 191                          cur_width + dx,
 192                          cur_height + dy);
 193     }
 194   else
 195     {
 196       gtk_window_resize (GTK_WINDOW (dialog), width, height);
 197     }
 198   priv->default_width = width;
 199   priv->default_height = height;
 200 }
 201
 202
 203 static GObject*
 204 gtk_file_chooser_dialog_constructor (GType                  type,
 205                                      guint                  n_construct_properties,
 206                                      GObjectConstructParam *construct_params)
 207 {
 208   GtkFileChooserDialogPrivate *priv;
 209   GObject *object;
 210
 211   object = parent_class->constructor (type,
 212                                       n_construct_properties,
 213                                       construct_params);
 214   priv = GTK_FILE_CHOOSER_DIALOG_GET_PRIVATE (object);
 215
 216   gtk_widget_push_composite_child ();
 217
 218   if (priv->file_system)
 219     priv->widget = g_object_new (GTK_TYPE_FILE_CHOOSER_WIDGET,
 220                                  "file-system-backend", priv->file_system,
 221                                  NULL);
 222   else
 223     priv->widget = g_object_new (GTK_TYPE_FILE_CHOOSER_WIDGET, NULL);
 224
 225   g_signal_connect (priv->widget, "file-activated",
 226                     G_CALLBACK (file_chooser_widget_file_activated), object);
 227   g_signal_connect (priv->widget, "default-size-changed",
 228                     G_CALLBACK (file_chooser_widget_default_size_changed), object);
 229
 230   gtk_box_pack_start (GTK_BOX (GTK_DIALOG (object)->vbox), priv->widget, TRUE, TRUE, 0);
 231   gtk_widget_show (priv->widget);
 232
 233   _gtk_file_chooser_set_delegate (GTK_FILE_CHOOSER (object),
 234                                   GTK_FILE_CHOOSER (priv->widget));
 235
 236   gtk_widget_pop_composite_child ();
 237
 238   return object;
 239 }
 240
 241 static void
 242 gtk_file_chooser_dialog_set_property (GObject         *object,
 243                                       guint            prop_id,
 244                                       const GValue    *value,
 245                                       GParamSpec      *pspec)
 246
 247 {
 248   GtkFileChooserDialogPrivate *priv = GTK_FILE_CHOOSER_DIALOG_GET_PRIVATE (object);
 249
 250   switch (prop_id)
 251     {
 252     case GTK_FILE_CHOOSER_PROP_FILE_SYSTEM_BACKEND:
 253       g_free (priv->file_system);
 254       priv->file_system = g_value_dup_string (value);
 255       break;
 256     default:
 257       g_object_set_property (G_OBJECT (priv->widget), pspec->name, value);
 258       break;
 259     }
 260 }
 261
 262 static void
 263 gtk_file_chooser_dialog_get_property (GObject         *object,
 264                                       guint            prop_id,
 265                                       GValue          *value,
 266                                       GParamSpec      *pspec)
 267 {
 268   GtkFileChooserDialogPrivate *priv = GTK_FILE_CHOOSER_DIALOG_GET_PRIVATE (object);
 269
 270   g_object_get_property (G_OBJECT (priv->widget), pspec->name, value);
 271 }
 272
 273 #if 0
 274 static void
 275 set_default_size (GtkFileChooserDialog *dialog)
 276 {
 277   GtkWidget *widget;
 278   GtkWindow *window;
 279   int default_width, default_height;
 280   int width, height;
 281   int font_size;
 282   GdkScreen *screen;
 283   int monitor_num;
 284   GtkRequisition req;
 285   GdkRectangle monitor;
 286
 287   widget = GTK_WIDGET (dialog);
 288   window = GTK_WINDOW (dialog);
 289
 290   /* Size based on characters */
 291
 292   font_size = pango_font_description_get_size (widget->style->font_desc);
 293   font_size = PANGO_PIXELS (font_size);
 294
 295   width = font_size * NUM_CHARS;
 296   height = font_size * NUM_LINES;
 297
 298   /* Use at least the requisition size... */
 299
 300   gtk_widget_size_request (widget, &req);
 301   width = MAX (width, req.width);
 302   height = MAX (height, req.height);
 303
 304   /* ... but no larger than the monitor */
 305
 306   screen = gtk_widget_get_screen (widget);
 307   monitor_num = gdk_screen_get_monitor_at_window (screen, widget->window);
 308
 309   gdk_screen_get_monitor_geometry (screen, monitor_num, &monitor);
 310
 311   width = MIN (width, monitor.width * 3 / 4);
 312   height = MIN (height, monitor.height * 3 / 4);
 313
 314   /* Set size */
 315
 316   gtk_window_get_default_size (window, &default_width, &default_height);
 317
 318   gtk_window_set_default_size (window,
 319                                (default_width == -1) ? width : default_width,
 320                                (default_height == -1) ? height : default_height);
 321 }
 322 #endif
 323
 324 static void
 325 gtk_file_chooser_dialog_style_set (GtkWidget *widget,
 326                                    GtkStyle  *previous_style)
 327 {
 328   GtkDialog *dialog;
 329
 330   if (GTK_WIDGET_CLASS (parent_class)->style_set)
 331     GTK_WIDGET_CLASS (parent_class)->style_set (widget, previous_style);
 332
 333   dialog = GTK_DIALOG (widget);
 334
 335   /* Override the style properties with HIG-compliant spacings.  Ugh.
 336    * http://developer.gnome.org/projects/gup/hig/1.0/layout.html#layout-dialogs
 337    * http://developer.gnome.org/projects/gup/hig/1.0/windows.html#alert-spacing
 338    */
 339
 340   gtk_container_set_border_width (GTK_CONTAINER (dialog->vbox), 12);
 341   gtk_box_set_spacing (GTK_BOX (dialog->vbox), 24);
 342
 343   gtk_container_set_border_width (GTK_CONTAINER (dialog->action_area), 0);
 344   gtk_box_set_spacing (GTK_BOX (dialog->action_area), 6);
 345 }
 346
 347 static GtkWidget *
 348 gtk_file_chooser_dialog_new_valist (const gchar          *title,
 349                                     GtkWindow            *parent,
 350                                     GtkFileChooserAction  action,
 351                                     const gchar          *backend,
 352                                     const gchar          *first_button_text,
 353                                     va_list               varargs)
 354 {
 355   GtkWidget *result;
 356   const char *button_text = first_button_text;
 357   gint response_id;
 358
 359   result = g_object_new (GTK_TYPE_FILE_CHOOSER_DIALOG,
 360                          "title", title,
 361                          "action", action,
 362                          "file-system-backend", backend,
 363                          NULL);
 364
 365   if (parent)
 366     gtk_window_set_transient_for (GTK_WINDOW (result), parent);
 367
 368   while (button_text)
 369     {
 370       response_id = va_arg (varargs, gint);
 371       gtk_dialog_add_button (GTK_DIALOG (result), button_text, response_id);
 372       button_text = va_arg (varargs, const gchar *);
 373     }
 374
 375   return result;
 376 }
 377
 378 /**
 379  * gtk_file_chooser_dialog_new:
 380  * @title: Title of the dialog, or %NULL
 381  * @parent: Transient parent of the dialog, or %NULL
 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.  This function is analogous to
 387  * gtk_dialog_new_with_buttons().
 388  *
 389  * Return value: a new #GtkFileChooserDialog
 390  *
 391  * Since: 2.4
 392  **/
 393 GtkWidget *
 394 gtk_file_chooser_dialog_new (const gchar         *title,
 395                              GtkWindow           *parent,
 396                              GtkFileChooserAction action,
 397                              const gchar         *first_button_text,
 398                              ...)
 399 {
 400   GtkWidget *result;
 401   va_list varargs;
 402
 403   va_start (varargs, first_button_text);
 404   result = gtk_file_chooser_dialog_new_valist (title, parent, action,
 405                                                NULL, first_button_text,
 406                                                varargs);
 407   va_end (varargs);
 408
 409   return result;
 410 }
 411
 412 /**
 413  * gtk_file_chooser_dialog_new_with_backend:
 414  * @title: Title of the dialog, or %NULL
 415  * @parent: Transient parent of the dialog, or %NULL
 416  * @backend: The name of the specific filesystem backend to use.
 417  * @action: Open or save mode for the dialog
 418  * @first_button_text: stock ID or text to go in the first button, or %NULL
 419  * @Varargs: response ID for the first button, then additional (button, id) pairs, ending with %NULL
 420  *
 421  * Creates a new #GtkFileChooserDialog with a specified backend. This is
 422  * especially useful if you use gtk_file_chooser_set_local_only() to allow
 423  * non-local files and you use a more expressive vfs, such as gnome-vfs,
 424  * to load files.
 425  *
 426  * Return value: a new #GtkFileChooserDialog
 427  *
 428  * Since: 2.4
 429  **/
 430 GtkWidget *
 431 gtk_file_chooser_dialog_new_with_backend (const gchar          *title,
 432                                           GtkWindow            *parent,
 433                                           GtkFileChooserAction  action,
 434                                           const gchar          *backend,
 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                                                backend, first_button_text,
 444                                                varargs);
 445   va_end (varargs);
 446
 447   return result;
 448 }