git.sur5r.net Git - glabels/blob - glabels2/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 "combo-util.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_combo",   &editor->priv->img_key_combo,
  84                                      NULL);
  85
  86         gl_combo_util_add_text_model ( GTK_COMBO_BOX(editor->priv->img_key_combo));
  87
  88         /* Modify file button properties. */
  89         add_image_filters_to_chooser (GTK_FILE_CHOOSER (editor->priv->img_file_button));
  90         preview = gtk_image_new ();
  91         gtk_file_chooser_set_preview_widget (GTK_FILE_CHOOSER (editor->priv->img_file_button), preview);
  92         g_signal_connect (G_OBJECT (editor->priv->img_file_button),
  93                           "update-preview",
  94                           G_CALLBACK (update_preview_cb), preview);
  95
  96         /* Un-hide */
  97         gtk_widget_show_all (editor->priv->img_page_vbox);
  98
  99         /* Connect signals */
 100         g_signal_connect_swapped (G_OBJECT (editor->priv->img_file_button),
 101                                   "selection-changed",
 102                                   G_CALLBACK (img_selection_changed_cb),
 103                                   G_OBJECT (editor));
 104         g_signal_connect_swapped (G_OBJECT (editor->priv->img_key_combo),
 105                                   "changed",
 106                                   G_CALLBACK (gl_object_editor_changed_cb),
 107                                   G_OBJECT (editor));
 108         g_signal_connect_swapped (G_OBJECT (editor->priv->img_file_radio),
 109                                   "toggled",
 110                                   G_CALLBACK (img_radio_toggled_cb),
 111                                   G_OBJECT (editor));
 112         g_signal_connect_swapped (G_OBJECT (editor->priv->img_key_radio),
 113                                   "toggled",
 114                                   G_CALLBACK (img_radio_toggled_cb),
 115                                   G_OBJECT (editor));
 116
 117         gl_debug (DEBUG_EDITOR, "END");
 118 }
 119
 120
 121 /*--------------------------------------------------------------------------*/
 122 /* PRIVATE.  image radio callback.                                          */
 123 /*--------------------------------------------------------------------------*/
 124 static void
 125 img_radio_toggled_cb (glObjectEditor *editor)
 126 {
 127         if (editor->priv->stop_signals) return;
 128
 129         gl_debug (DEBUG_WDGT, "START");
 130
 131         if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (editor->priv->img_file_radio))) {
 132                 gtk_widget_set_sensitive (editor->priv->img_file_button, TRUE);
 133                 gtk_widget_set_sensitive (editor->priv->img_key_combo, FALSE);
 134         } else {
 135                 gtk_widget_set_sensitive (editor->priv->img_file_button, FALSE);
 136                 gtk_widget_set_sensitive (editor->priv->img_key_combo, TRUE);
 137         }
 138
 139         /* Emit our "changed" signal */
 140         g_signal_emit (G_OBJECT (editor), gl_object_editor_signals[CHANGED], 0);
 141
 142         gl_debug (DEBUG_WDGT, "END");
 143 }
 144
 145
 146 /*****************************************************************************/
 147 /* Set image.                                                                */
 148 /*****************************************************************************/
 149 void
 150 gl_object_editor_set_image (glObjectEditor      *editor,
 151                             gboolean             merge_flag,
 152                             glTextNode          *text_node)
 153 {
 154         gl_debug (DEBUG_EDITOR, "START");
 155
 156         editor->priv->stop_signals = TRUE;
 157
 158         gtk_widget_set_sensitive (editor->priv->img_key_radio, merge_flag);
 159
 160         if (!text_node->field_flag) {
 161
 162                 gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON
 163                                               (editor->priv->img_file_radio), TRUE);
 164                 gtk_widget_set_sensitive (editor->priv->img_file_button, TRUE);
 165                 gtk_widget_set_sensitive (editor->priv->img_key_combo, FALSE);
 166
 167                 if (text_node->data != NULL ) {
 168                         gtk_file_chooser_set_filename (GTK_FILE_CHOOSER(editor->priv->img_file_button),
 169                                                        text_node->data);
 170                 } else {
 171                         gtk_file_chooser_unselect_all (GTK_FILE_CHOOSER(editor->priv->img_file_button));
 172                 }
 173         } else {
 174
 175                 gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON
 176                                               (editor->priv->img_key_radio), TRUE);
 177
 178                 gtk_widget_set_sensitive (editor->priv->img_file_button, FALSE);
 179                 gtk_widget_set_sensitive (editor->priv->img_key_combo, TRUE);
 180
 181                 gl_combo_util_set_active_text (GTK_COMBO_BOX (editor->priv->img_key_combo),
 182                                                text_node->data);
 183         }
 184
 185         editor->priv->stop_signals = FALSE;
 186
 187         gl_debug (DEBUG_EDITOR, "END");
 188 }
 189
 190
 191 /*****************************************************************************/
 192 /* Query image.                                                              */
 193 /*****************************************************************************/
 194 glTextNode *
 195 gl_object_editor_get_image (glObjectEditor      *editor)
 196 {
 197         glTextNode *text_node;
 198
 199         gl_debug (DEBUG_EDITOR, "START");
 200
 201         text_node = g_new0(glTextNode,1);
 202
 203         if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (editor->priv->img_file_radio))) {
 204                 text_node->field_flag = FALSE;
 205                 text_node->data =
 206                         gtk_file_chooser_get_filename (GTK_FILE_CHOOSER(editor->priv->img_file_button));
 207         } else {
 208                 text_node->field_flag = TRUE;
 209                 text_node->data =
 210                         gtk_combo_box_get_active_text (GTK_COMBO_BOX (editor->priv->img_key_combo));
 211         }
 212
 213         gl_debug (DEBUG_EDITOR, "text_node: field_flag=%d, data=%s",
 214                   text_node->field_flag, text_node->data);
 215
 216         gl_debug (DEBUG_EDITOR, "END");
 217
 218         return text_node;
 219 }
 220
 221
 222 /*--------------------------------------------------------------------------*/
 223 /* PRIVATE.  Update preview image.                                          */
 224 /*--------------------------------------------------------------------------*/
 225 static void
 226 update_preview_cb (GtkFileChooser *file_chooser, gpointer data)
 227 {
 228         GtkWidget *preview;
 229         char *filename;
 230         GdkPixbuf *pixbuf;
 231         gboolean have_preview;
 232
 233         preview = GTK_WIDGET (data);
 234         filename = gtk_file_chooser_get_preview_filename (file_chooser);
 235
 236         if (filename) {
 237                 pixbuf = gdk_pixbuf_new_from_file_at_size (filename, 128, 128, NULL);
 238                 have_preview = (pixbuf != NULL);
 239                 g_free (filename);
 240
 241                 gtk_image_set_from_pixbuf (GTK_IMAGE (preview), pixbuf);
 242                 g_object_unref (G_OBJECT (pixbuf));
 243
 244                 gtk_file_chooser_set_preview_widget_active (file_chooser,
 245                                                             have_preview);
 246         } else {
 247                 gtk_file_chooser_set_preview_widget_active (file_chooser, FALSE);
 248         }
 249 }
 250
 251
 252 /*--------------------------------------------------------------------------*/
 253 /* PRIVATE.  Add filters to file chooser.                                   */
 254 /*           Based on eog's eog_file_selection_add_filter().                */
 255 /*--------------------------------------------------------------------------*/
 256 static void
 257 add_image_filters_to_chooser (GtkFileChooser *chooser)
 258 {
 259         GtkFileFilter *all_file_filter;
 260         GtkFileFilter *all_img_filter;
 261         GSList        *formats;
 262         GSList        *it;
 263         GtkFileFilter *filter;
 264         GSList        *filters = NULL;
 265         gchar        **mime_types, **pattern, *tmp;
 266         int            i;
 267
 268         /* All Files Filter */
 269         all_file_filter = gtk_file_filter_new ();
 270         gtk_file_filter_set_name (all_file_filter, _("All Files"));
 271         gtk_file_filter_add_pattern (all_file_filter, "*");
 272
 273         /* All Image Filter */
 274         all_img_filter = gtk_file_filter_new ();
 275         gtk_file_filter_set_name (all_img_filter, _("All Images"));
 276
 277         /* Individual image filters */
 278         formats = gdk_pixbuf_get_formats ();
 279         for (it = formats; it != NULL; it = it->next) {
 280                 gchar *filter_name;
 281                 GdkPixbufFormat *format;
 282                 filter = gtk_file_filter_new ();
 283                 gchar *description, *name;
 284
 285                 format = (GdkPixbufFormat*) it->data;
 286
 287                 /* Filter name: First description then file extension, eg. "The PNG-Format (*.png)".*/
 288                 description = gdk_pixbuf_format_get_description (format);
 289                 name = gdk_pixbuf_format_get_name (format);
 290                 filter_name = g_strdup_printf (_("%s (*.%s)"), description, name);
 291                 g_free (description);
 292                 g_free (name);
 293                 gtk_file_filter_set_name (filter, filter_name);
 294                 g_free (filter_name);
 295
 296                 mime_types = gdk_pixbuf_format_get_mime_types ((GdkPixbufFormat *) it->data);
 297                 for (i = 0; mime_types[i] != NULL; i++) {
 298                         gtk_file_filter_add_mime_type (filter, mime_types[i]);
 299                         gtk_file_filter_add_mime_type (all_img_filter, mime_types[i]);
 300                 }
 301                 g_strfreev (mime_types);
 302
 303                 pattern = gdk_pixbuf_format_get_extensions ((GdkPixbufFormat *) it->data);
 304                 for (i = 0; pattern[i] != NULL; i++) {
 305                         tmp = g_strconcat ("*.", pattern[i], NULL);
 306                         gtk_file_filter_add_pattern (filter, tmp);
 307                         gtk_file_filter_add_pattern (all_img_filter, tmp);
 308                         g_free (tmp);
 309                 }
 310                 g_strfreev (pattern);
 311
 312                 filters = g_slist_prepend (filters, filter);
 313         }
 314         g_slist_free (formats);
 315
 316         /* Add filter to filechooser */
 317         gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (chooser), all_file_filter);
 318         gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (chooser), all_img_filter);
 319         gtk_file_chooser_set_filter (GTK_FILE_CHOOSER (chooser), all_img_filter);
 320
 321         for (it = filters; it != NULL; it = it->next) {
 322                 gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (chooser),
 323                                              GTK_FILE_FILTER (it->data));
 324         }
 325         g_slist_free (filters);
 326 }
 327
 328
 329 /*--------------------------------------------------------------------------*/
 330 /* PRIVATE. Selection changed callback.                                     */
 331 /*--------------------------------------------------------------------------*/
 332 static void
 333 img_selection_changed_cb (glObjectEditor *editor)
 334 {
 335         gchar *filename;
 336
 337         if (editor->priv->stop_signals) return;
 338
 339         gl_debug (DEBUG_EDITOR, "START");
 340
 341         filename = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER(editor->priv->img_file_button));
 342         if (filename != NULL)
 343         {
 344                 /* Emit our "changed" signal */
 345                 g_signal_emit (G_OBJECT (editor), gl_object_editor_signals[CHANGED], 0);
 346         }
 347         g_free (filename);
 348
 349         gl_debug (DEBUG_EDITOR, "END");
 350 }
 351
 352
 353
 354 /*
 355  * Local Variables:       -- emacs
 356  * mode: C                -- emacs
 357  * c-basic-offset: 8      -- emacs
 358  * tab-width: 8           -- emacs
 359  * indent-tabs-mode: nil  -- emacs
 360  * End:                   -- emacs
 361  */