git.sur5r.net Git - glabels/blob - src/object-editor-image-page.c

   1 /*
   2  *  object-editor-image-page.c
   3  *  Copyright (C) 2003-2009  Jim Evins <evins@snaught.com>.
   4  *
   5  *  This file is part of gLabels.
   6  *
   7  *  gLabels is free software: you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License as published by
   9  *  the Free Software Foundation, either version 3 of the License, or
  10  *  (at your option) any later version.
  11  *
  12  *  gLabels is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with gLabels.  If not, see <http://www.gnu.org/licenses/>.
  19  */
  20
  21 #include <config.h>
  22
  23 #include "object-editor.h"
  24
  25 #include <glib/gi18n.h>
  26 #include <gtk/gtk.h>
  27 #include <math.h>
  28
  29 #include "prefs.h"
  30 #include "field-button.h"
  31 #include "builder-util.h"
  32
  33 #include "object-editor-private.h"
  34
  35 #include "debug.h"
  36
  37
  38 /*===========================================*/
  39 /* Private macros                            */
  40 /*===========================================*/
  41
  42
  43 /*===========================================*/
  44 /* Private data types                        */
  45 /*===========================================*/
  46
  47
  48 /*===========================================*/
  49 /* Private globals                           */
  50 /*===========================================*/
  51
  52
  53 /*===========================================*/
  54 /* Local function prototypes                 */
  55 /*===========================================*/
  56
  57 static void img_radio_toggled_cb                (glObjectEditor        *editor);
  58
  59 static void update_preview_cb                   (GtkFileChooser *file_chooser,
  60                                                  gpointer        data);
  61 static void add_image_filters_to_chooser        (GtkFileChooser *file_chooser);
  62
  63 static void img_selection_changed_cb (glObjectEditor *editor);
  64
  65
  66 /*--------------------------------------------------------------------------*/
  67 /* PRIVATE.  Prepare image page.                                             */
  68 /*--------------------------------------------------------------------------*/
  69 void
  70 gl_object_editor_prepare_image_page (glObjectEditor *editor)
  71 {
  72         GtkWidget     *preview;
  73
  74
  75         gl_debug (DEBUG_EDITOR, "START");
  76
  77         /* Extract widgets from XML tree. */
  78         gl_builder_util_get_widgets (editor->priv->builder,
  79                                      "img_page_vbox",   &editor->priv->img_page_vbox,
  80                                      "img_file_radio",  &editor->priv->img_file_radio,
  81                                      "img_key_radio",   &editor->priv->img_key_radio,
  82                                      "img_file_button", &editor->priv->img_file_button,
  83                                      "img_key_hbox",    &editor->priv->img_key_hbox,
  84                                      NULL);
  85
  86         editor->priv->img_key_combo = gl_field_button_new (NULL);
  87         gtk_box_pack_start (GTK_BOX (editor->priv->img_key_hbox),
  88                             editor->priv->img_key_combo,
  89                             TRUE, TRUE, 0);
  90
  91
  92         /* Modify file button properties. */
  93         add_image_filters_to_chooser (GTK_FILE_CHOOSER (editor->priv->img_file_button));
  94         preview = gtk_image_new ();
  95         gtk_file_chooser_set_preview_widget (GTK_FILE_CHOOSER (editor->priv->img_file_button), preview);
  96         g_signal_connect (G_OBJECT (editor->priv->img_file_button),
  97                           "update-preview",
  98                           G_CALLBACK (update_preview_cb), preview);
  99
 100         /* Un-hide */
 101         gtk_widget_show_all (editor->priv->img_page_vbox);
 102
 103         /* Connect signals */
 104         g_signal_connect_swapped (G_OBJECT (editor->priv->img_file_button),
 105                                   "selection-changed",
 106                                   G_CALLBACK (img_selection_changed_cb),
 107                                   G_OBJECT (editor));
 108         g_signal_connect_swapped (G_OBJECT (editor->priv->img_key_combo),
 109                                   "changed",
 110                                   G_CALLBACK (gl_object_editor_changed_cb),
 111                                   G_OBJECT (editor));
 112         g_signal_connect_swapped (G_OBJECT (editor->priv->img_file_radio),
 113                                   "toggled",
 114                                   G_CALLBACK (img_radio_toggled_cb),
 115                                   G_OBJECT (editor));
 116         g_signal_connect_swapped (G_OBJECT (editor->priv->img_key_radio),
 117                                   "toggled",
 118                                   G_CALLBACK (img_radio_toggled_cb),
 119                                   G_OBJECT (editor));
 120
 121         gl_debug (DEBUG_EDITOR, "END");
 122 }
 123
 124
 125 /*--------------------------------------------------------------------------*/
 126 /* PRIVATE.  image radio callback.                                          */
 127 /*--------------------------------------------------------------------------*/
 128 static void
 129 img_radio_toggled_cb (glObjectEditor *editor)
 130 {
 131         gl_debug (DEBUG_WDGT, "START");
 132
 133         if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (editor->priv->img_file_radio))) {
 134                 gtk_widget_set_sensitive (editor->priv->img_file_button, TRUE);
 135                 gtk_widget_set_sensitive (editor->priv->img_key_combo, FALSE);
 136         } else {
 137                 gtk_widget_set_sensitive (editor->priv->img_file_button, FALSE);
 138                 gtk_widget_set_sensitive (editor->priv->img_key_combo, TRUE);
 139         }
 140
 141         gl_object_editor_changed_cb (editor);
 142
 143         gl_debug (DEBUG_WDGT, "END");
 144 }
 145
 146
 147 /*****************************************************************************/
 148 /* Set image.                                                                */
 149 /*****************************************************************************/
 150 void
 151 gl_object_editor_set_image (glObjectEditor      *editor,
 152                             gboolean             merge_flag,
 153                             glTextNode          *text_node)
 154 {
 155         gl_debug (DEBUG_EDITOR, "START");
 156
 157
 158         g_signal_handlers_block_by_func (G_OBJECT (editor->priv->img_file_radio),
 159                                          img_radio_toggled_cb, editor);
 160         g_signal_handlers_block_by_func (G_OBJECT (editor->priv->img_key_radio),
 161                                          img_radio_toggled_cb, editor);
 162         g_signal_handlers_block_by_func (G_OBJECT (editor->priv->img_file_button),
 163                                          img_selection_changed_cb, editor);
 164         g_signal_handlers_block_by_func (G_OBJECT (editor->priv->img_key_combo),
 165                                          gl_object_editor_changed_cb, editor);
 166
 167
 168         gtk_widget_set_sensitive (editor->priv->img_key_radio, merge_flag);
 169
 170         if (!text_node->field_flag || !merge_flag)
 171         {
 172                 gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (editor->priv->img_file_radio), TRUE);
 173                 gtk_widget_set_sensitive (editor->priv->img_file_button, TRUE);
 174                 gtk_widget_set_sensitive (editor->priv->img_key_combo, FALSE);
 175
 176                 if (text_node->data != NULL )
 177                 {
 178                         gtk_file_chooser_set_filename (GTK_FILE_CHOOSER(editor->priv->img_file_button),
 179                                                        text_node->data);
 180                 }
 181                 else
 182                 {
 183                         gtk_file_chooser_unselect_all (GTK_FILE_CHOOSER(editor->priv->img_file_button));
 184                 }
 185         }
 186         else
 187         {
 188                 gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (editor->priv->img_key_radio), TRUE);
 189
 190                 gtk_widget_set_sensitive (editor->priv->img_file_button, FALSE);
 191                 gtk_widget_set_sensitive (editor->priv->img_key_combo, TRUE);
 192
 193                 gl_field_button_set_key (GL_FIELD_BUTTON (editor->priv->img_key_combo),
 194                                          text_node->data);
 195         }
 196
 197
 198         g_signal_handlers_unblock_by_func (G_OBJECT (editor->priv->img_file_radio),
 199                                            img_radio_toggled_cb, editor);
 200         g_signal_handlers_unblock_by_func (G_OBJECT (editor->priv->img_key_radio),
 201                                            img_radio_toggled_cb, editor);
 202         g_signal_handlers_unblock_by_func (G_OBJECT (editor->priv->img_file_button),
 203                                            img_selection_changed_cb, editor);
 204         g_signal_handlers_unblock_by_func (G_OBJECT (editor->priv->img_key_combo),
 205                                            gl_object_editor_changed_cb, editor);
 206
 207
 208         gl_debug (DEBUG_EDITOR, "END");
 209 }
 210
 211
 212 /*****************************************************************************/
 213 /* Query image.                                                              */
 214 /*****************************************************************************/
 215 glTextNode *
 216 gl_object_editor_get_image (glObjectEditor      *editor)
 217 {
 218         glTextNode *text_node;
 219
 220         gl_debug (DEBUG_EDITOR, "START");
 221
 222         text_node = g_new0(glTextNode,1);
 223
 224         if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (editor->priv->img_file_radio)))
 225         {
 226                 text_node->field_flag = FALSE;
 227                 text_node->data =
 228                         gtk_file_chooser_get_filename (GTK_FILE_CHOOSER(editor->priv->img_file_button));
 229         }
 230         else
 231         {
 232                 text_node->field_flag = TRUE;
 233                 text_node->data =
 234                         gl_field_button_get_key (GL_FIELD_BUTTON (editor->priv->img_key_combo));
 235         }
 236
 237         gl_debug (DEBUG_EDITOR, "text_node: field_flag=%d, data=%s",
 238                   text_node->field_flag, text_node->data);
 239
 240         gl_debug (DEBUG_EDITOR, "END");
 241
 242         return text_node;
 243 }
 244
 245
 246 /*--------------------------------------------------------------------------*/
 247 /* PRIVATE.  Update preview image.                                          */
 248 /*--------------------------------------------------------------------------*/
 249 static void
 250 update_preview_cb (GtkFileChooser *file_chooser, gpointer data)
 251 {
 252         GtkWidget *preview;
 253         char *filename;
 254         GdkPixbuf *pixbuf;
 255
 256         gl_debug (DEBUG_EDITOR, "START");
 257
 258         preview = GTK_WIDGET (data);
 259         filename = gtk_file_chooser_get_preview_filename (file_chooser);
 260
 261         if (filename)
 262         {
 263                 gl_debug (DEBUG_EDITOR, "filename =\"%s\"", filename);
 264                 pixbuf = gdk_pixbuf_new_from_file_at_size (filename, 128, 128, NULL);
 265                 if (pixbuf != NULL)
 266                 {
 267                         gtk_image_set_from_pixbuf (GTK_IMAGE (preview), pixbuf);
 268                         g_object_unref (G_OBJECT (pixbuf));
 269
 270                         gtk_file_chooser_set_preview_widget_active (file_chooser,
 271                                                                     TRUE);
 272                 }
 273                 g_free (filename);
 274         }
 275         else
 276         {
 277                 gtk_file_chooser_set_preview_widget_active (file_chooser, FALSE);
 278         }
 279
 280         gl_debug (DEBUG_EDITOR, "END");
 281 }
 282
 283
 284 /*--------------------------------------------------------------------------*/
 285 /* PRIVATE.  Add filters to file chooser.                                   */
 286 /*           Based on eog's eog_file_selection_add_filter().                */
 287 /*--------------------------------------------------------------------------*/
 288 static void
 289 add_image_filters_to_chooser (GtkFileChooser *chooser)
 290 {
 291         GtkFileFilter *all_file_filter;
 292         GtkFileFilter *all_img_filter;
 293         GSList        *formats;
 294         GSList        *it;
 295         GtkFileFilter *filter;
 296         GSList        *filters = NULL;
 297         gchar        **mime_types, **pattern, *tmp;
 298         int            i;
 299
 300         /* All Files Filter */
 301         all_file_filter = gtk_file_filter_new ();
 302         gtk_file_filter_set_name (all_file_filter, _("All Files"));
 303         gtk_file_filter_add_pattern (all_file_filter, "*");
 304
 305         /* All Image Filter */
 306         all_img_filter = gtk_file_filter_new ();
 307         gtk_file_filter_set_name (all_img_filter, _("All Images"));
 308
 309         /* Individual image filters */
 310         formats = gdk_pixbuf_get_formats ();
 311         for (it = formats; it != NULL; it = it->next)
 312         {
 313                 gchar *filter_name;
 314                 GdkPixbufFormat *format;
 315                 filter = gtk_file_filter_new ();
 316                 gchar *description, *name;
 317
 318                 format = (GdkPixbufFormat*) it->data;
 319
 320                 /* Filter name: First description then file extension, eg. "The PNG-Format (*.png)".*/
 321                 description = gdk_pixbuf_format_get_description (format);
 322                 name = gdk_pixbuf_format_get_name (format);
 323                 filter_name = g_strdup_printf (_("%s (*.%s)"), description, name);
 324                 g_free (description);
 325                 g_free (name);
 326                 gtk_file_filter_set_name (filter, filter_name);
 327                 g_free (filter_name);
 328
 329                 mime_types = gdk_pixbuf_format_get_mime_types ((GdkPixbufFormat *) it->data);
 330                 for (i = 0; mime_types[i] != NULL; i++)
 331                 {
 332                         gtk_file_filter_add_mime_type (filter, mime_types[i]);
 333                         gtk_file_filter_add_mime_type (all_img_filter, mime_types[i]);
 334                 }
 335                 g_strfreev (mime_types);
 336
 337                 pattern = gdk_pixbuf_format_get_extensions ((GdkPixbufFormat *) it->data);
 338                 for (i = 0; pattern[i] != NULL; i++)
 339                 {
 340                         tmp = g_strconcat ("*.", pattern[i], NULL);
 341                         gtk_file_filter_add_pattern (filter, tmp);
 342                         gtk_file_filter_add_pattern (all_img_filter, tmp);
 343                         g_free (tmp);
 344                 }
 345                 g_strfreev (pattern);
 346
 347                 filters = g_slist_prepend (filters, filter);
 348         }
 349         g_slist_free (formats);
 350
 351         /* Add filter to filechooser */
 352         gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (chooser), all_file_filter);
 353         gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (chooser), all_img_filter);
 354         gtk_file_chooser_set_filter (GTK_FILE_CHOOSER (chooser), all_img_filter);
 355
 356         for (it = filters; it != NULL; it = it->next) {
 357                 gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (chooser),
 358                                              GTK_FILE_FILTER (it->data));
 359         }
 360         g_slist_free (filters);
 361 }
 362
 363
 364 /*--------------------------------------------------------------------------*/
 365 /* PRIVATE. Selection changed callback.                                     */
 366 /*--------------------------------------------------------------------------*/
 367 static void
 368 img_selection_changed_cb (glObjectEditor *editor)
 369 {
 370         gchar *filename;
 371
 372         gl_debug (DEBUG_EDITOR, "START");
 373
 374         filename = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER(editor->priv->img_file_button));
 375         if (filename != NULL)
 376         {
 377                 gl_object_editor_changed_cb (editor);
 378         }
 379         g_free (filename);
 380
 381         gl_debug (DEBUG_EDITOR, "END");
 382 }
 383
 384
 385
 386 /*
 387  * Local Variables:       -- emacs
 388  * mode: C                -- emacs
 389  * c-basic-offset: 8      -- emacs
 390  * tab-width: 8           -- emacs
 391  * indent-tabs-mode: nil  -- emacs
 392  * End:                   -- emacs
 393  */