git.sur5r.net Git - glabels/blob - glabels2/src/object-editor-image-page.c

   1 /*
   2  *  (GLABELS) Label and Business Card Creation program for GNOME
   3  *
   4  *  object-editor.c:  object properties editor module
   5  *
   6  *  Copyright (C) 2003  Jim Evins <evins@snaught.com>.
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software
  20  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  21  */
  22 #include <config.h>
  23
  24 #include <gnome.h>
  25 #include <math.h>
  26 #include <gtk/gtkimage.h>
  27
  28 #include "object-editor.h"
  29 #include "prefs.h"
  30
  31 #include "object-editor-private.h"
  32
  33 #include "debug.h"
  34
  35 /*===========================================*/
  36 /* Private macros                            */
  37 /*===========================================*/
  38
  39 /*===========================================*/
  40 /* Private data types                        */
  41 /*===========================================*/
  42
  43 /*===========================================*/
  44 /* Private globals                           */
  45 /*===========================================*/
  46
  47 /*===========================================*/
  48 /* Local function prototypes                 */
  49 /*===========================================*/
  50
  51 static void img_radio_toggled_cb                (glObjectEditor        *editor);
  52
  53 static void update_preview_cb                   (GtkFileChooser *file_chooser,
  54                                                  gpointer        data);
  55 static void add_image_filters_to_chooser        (GtkFileChooser *file_chooser);
  56
  57
  58 \f
  59 /*--------------------------------------------------------------------------*/
  60 /* PRIVATE.  Prepare image page.                                             */
  61 /*--------------------------------------------------------------------------*/
  62 void
  63 gl_object_editor_prepare_image_page (glObjectEditor *editor)
  64 {
  65         GdkColor      *gdk_color;
  66         GtkFileFilter *filter;
  67         GtkWidget     *preview;
  68
  69
  70         gl_debug (DEBUG_EDITOR, "START");
  71
  72         /* Extract widgets from XML tree. */
  73         editor->priv->img_page_vbox    = glade_xml_get_widget (editor->priv->gui,
  74                                                                "img_page_vbox");
  75         editor->priv->img_file_radio   = glade_xml_get_widget (editor->priv->gui,
  76                                                                "img_file_radio");
  77         editor->priv->img_key_radio    = glade_xml_get_widget (editor->priv->gui,
  78                                                                "img_key_radio");
  79         editor->priv->img_file_button  = glade_xml_get_widget (editor->priv->gui,
  80                                                                "img_file_button");
  81         editor->priv->img_key_combo    = glade_xml_get_widget (editor->priv->gui,
  82                                                                "img_key_combo");
  83         editor->priv->img_key_entry    = glade_xml_get_widget (editor->priv->gui,
  84                                                                "img_key_entry");
  85
  86         /* Modify file button properties. */
  87         add_image_filters_to_chooser (GTK_FILE_CHOOSER (editor->priv->img_file_button));
  88         preview = gtk_image_new ();
  89         gtk_file_chooser_set_preview_widget (GTK_FILE_CHOOSER (editor->priv->img_file_button), preview);
  90         g_signal_connect (G_OBJECT (editor->priv->img_file_button),
  91                           "update-preview",
  92                           G_CALLBACK (update_preview_cb), preview);
  93
  94         /* Un-hide */
  95         gtk_widget_show_all (editor->priv->img_page_vbox);
  96
  97         /* Connect signals */
  98         g_signal_connect_swapped (G_OBJECT (editor->priv->img_file_button),
  99                                   "selection-changed",
 100                                   G_CALLBACK (gl_object_editor_changed_cb),
 101                                   G_OBJECT (editor));
 102         g_signal_connect_swapped (G_OBJECT (editor->priv->img_key_entry),
 103                                   "changed",
 104                                   G_CALLBACK (gl_object_editor_changed_cb),
 105                                   G_OBJECT (editor));
 106         g_signal_connect_swapped (G_OBJECT (editor->priv->img_file_radio),
 107                                   "toggled",
 108                                   G_CALLBACK (img_radio_toggled_cb),
 109                                   G_OBJECT (editor));
 110         g_signal_connect_swapped (G_OBJECT (editor->priv->img_key_radio),
 111                                   "toggled",
 112                                   G_CALLBACK (img_radio_toggled_cb),
 113                                   G_OBJECT (editor));
 114
 115         gl_debug (DEBUG_EDITOR, "END");
 116 }
 117
 118 /*--------------------------------------------------------------------------*/
 119 /* PRIVATE.  image radio callback.                                          */
 120 /*--------------------------------------------------------------------------*/
 121 static void
 122 img_radio_toggled_cb (glObjectEditor *editor)
 123 {
 124         gl_debug (DEBUG_WDGT, "START");
 125
 126         if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (editor->priv->img_file_radio))) {
 127                 gtk_widget_set_sensitive (editor->priv->img_file_button, TRUE);
 128                 gtk_widget_set_sensitive (editor->priv->img_key_combo, FALSE);
 129         } else {
 130                 gtk_widget_set_sensitive (editor->priv->img_file_button, FALSE);
 131                 gtk_widget_set_sensitive (editor->priv->img_key_combo, TRUE);
 132         }
 133
 134         /* Emit our "changed" signal */
 135         g_signal_emit (G_OBJECT (editor), gl_object_editor_signals[CHANGED], 0);
 136
 137         gl_debug (DEBUG_WDGT, "END");
 138 }
 139
 140 /*****************************************************************************/
 141 /* Set image.                                                                */
 142 /*****************************************************************************/
 143 void
 144 gl_object_editor_set_image (glObjectEditor      *editor,
 145                             gboolean             merge_flag,
 146                             glTextNode          *text_node)
 147 {
 148         gint pos;
 149
 150         gl_debug (DEBUG_EDITOR, "START");
 151
 152         g_signal_handlers_block_by_func (G_OBJECT (editor->priv->img_file_button),
 153                                          G_CALLBACK (gl_object_editor_changed_cb),
 154                                          editor);
 155         g_signal_handlers_block_by_func (G_OBJECT (editor->priv->img_key_entry),
 156                                          G_CALLBACK (gl_object_editor_changed_cb),
 157                                          editor);
 158
 159         gtk_widget_set_sensitive (editor->priv->img_key_radio, merge_flag);
 160
 161         if (!text_node->field_flag) {
 162
 163                 gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON
 164                                               (editor->priv->img_file_radio), TRUE);
 165                 gtk_widget_set_sensitive (editor->priv->img_file_button, TRUE);
 166                 gtk_widget_set_sensitive (editor->priv->img_key_combo, FALSE);
 167
 168                 if (text_node->data != NULL ) {
 169                         gtk_file_chooser_set_filename (GTK_FILE_CHOOSER(editor->priv->img_file_button),
 170                                                        text_node->data);
 171                 } else {
 172                         gtk_file_chooser_unselect_all (GTK_FILE_CHOOSER(editor->priv->img_file_button));
 173                 }
 174         } else {
 175
 176                 gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON
 177                                               (editor->priv->img_key_radio), TRUE);
 178
 179                 gtk_widget_set_sensitive (editor->priv->img_file_button, FALSE);
 180                 gtk_widget_set_sensitive (editor->priv->img_key_combo, TRUE);
 181
 182                 gtk_editable_delete_text (GTK_EDITABLE (editor->priv->img_key_entry), 0, -1);
 183                 pos = 0;
 184                 gtk_editable_insert_text (GTK_EDITABLE (editor->priv->img_key_entry),
 185                                           text_node->data,
 186                                           strlen (text_node->data),
 187                                           &pos);
 188         }
 189
 190         g_signal_handlers_unblock_by_func (G_OBJECT (editor->priv->img_file_button),
 191                                            G_CALLBACK (gl_object_editor_changed_cb),
 192                                            editor);
 193         g_signal_handlers_unblock_by_func (G_OBJECT (editor->priv->img_key_entry),
 194                                            G_CALLBACK (gl_object_editor_changed_cb),
 195                                            editor);
 196
 197         gl_debug (DEBUG_EDITOR, "END");
 198 }
 199
 200 /*****************************************************************************/
 201 /* Query image.                                                              */
 202 /*****************************************************************************/
 203 glTextNode *
 204 gl_object_editor_get_image (glObjectEditor      *editor)
 205 {
 206         glTextNode *text_node;
 207
 208         gl_debug (DEBUG_EDITOR, "START");
 209
 210         text_node = g_new0(glTextNode,1);
 211
 212         if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (editor->priv->img_file_radio))) {
 213                 text_node->field_flag = FALSE;
 214                 text_node->data =
 215                         gtk_file_chooser_get_filename (GTK_FILE_CHOOSER(editor->priv->img_file_button));
 216         } else {
 217                 text_node->field_flag = TRUE;
 218                 text_node->data =
 219                     gtk_editable_get_chars (GTK_EDITABLE (editor->priv->img_key_entry),
 220                                             0, -1);
 221         }
 222
 223         gl_debug (DEBUG_EDITOR, "text_node: field_flag=%d, data=%s",
 224                   text_node->field_flag, text_node->data);
 225
 226         gl_debug (DEBUG_EDITOR, "END");
 227
 228         return text_node;
 229 }
 230
 231 /*--------------------------------------------------------------------------*/
 232 /* PRIVATE.  Update preview image.                                          */
 233 /*--------------------------------------------------------------------------*/
 234 static void
 235 update_preview_cb (GtkFileChooser *file_chooser, gpointer data)
 236 {
 237   GtkWidget *preview;
 238   char *filename;
 239   GdkPixbuf *pixbuf;
 240   gboolean have_preview;
 241
 242   preview = GTK_WIDGET (data);
 243   filename = gtk_file_chooser_get_preview_filename (file_chooser);
 244
 245   if (filename) {
 246           pixbuf = gdk_pixbuf_new_from_file_at_size (filename, 128, 128, NULL);
 247           have_preview = (pixbuf != NULL);
 248           g_free (filename);
 249
 250           gtk_image_set_from_pixbuf (GTK_IMAGE (preview), pixbuf);
 251           if (pixbuf)
 252                   gdk_pixbuf_unref (pixbuf);
 253
 254           gtk_file_chooser_set_preview_widget_active (file_chooser,
 255                                                       have_preview);
 256   } else {
 257           gtk_file_chooser_set_preview_widget_active (file_chooser, FALSE);
 258   }
 259 }
 260
 261 /*--------------------------------------------------------------------------*/
 262 /* PRIVATE.  Add filters to file chooser.                                   */
 263 /*           Based on eog's eog_file_selection_add_filter().                */
 264 /*--------------------------------------------------------------------------*/
 265 static void
 266 add_image_filters_to_chooser (GtkFileChooser *chooser)
 267 {
 268         GtkFileFilter *all_file_filter;
 269         GtkFileFilter *all_img_filter;
 270         GSList        *formats;
 271         GSList        *it;
 272         GtkFileFilter *filter;
 273         GSList        *filters = NULL;
 274         gchar        **mime_types, **pattern, *tmp;
 275         int            i;
 276
 277         /* All Files Filter */
 278         all_file_filter = gtk_file_filter_new ();
 279         gtk_file_filter_set_name (all_file_filter, _("All Files"));
 280         gtk_file_filter_add_pattern (all_file_filter, "*");
 281
 282         /* All Image Filter */
 283         all_img_filter = gtk_file_filter_new ();
 284         gtk_file_filter_set_name (all_img_filter, _("All Images"));
 285
 286         /* Individual image filters */
 287         formats = gdk_pixbuf_get_formats ();
 288         for (it = formats; it != NULL; it = it->next) {
 289                 char *filter_name;
 290                 GdkPixbufFormat *format;
 291                 filter = gtk_file_filter_new ();
 292
 293                 format = (GdkPixbufFormat*) it->data;
 294
 295                 /* Filter name: First description then file extension, eg. "The PNG-Format (*.png)".*/
 296                 filter_name = g_strdup_printf (_("%s (*.%s)"),
 297                                                gdk_pixbuf_format_get_description (format),
 298                                                gdk_pixbuf_format_get_name (format));
 299                 gtk_file_filter_set_name (filter, filter_name);
 300                 g_free (filter_name);
 301
 302                 mime_types = gdk_pixbuf_format_get_mime_types ((GdkPixbufFormat *) it->data);
 303                 for (i = 0; mime_types[i] != NULL; i++) {
 304                         gtk_file_filter_add_mime_type (filter, mime_types[i]);
 305                         gtk_file_filter_add_mime_type (all_img_filter, mime_types[i]);
 306                 }
 307                 g_strfreev (mime_types);
 308
 309                 pattern = gdk_pixbuf_format_get_extensions ((GdkPixbufFormat *) it->data);
 310                 for (i = 0; pattern[i] != NULL; i++) {
 311                         tmp = g_strconcat ("*.", pattern[i], NULL);
 312                         gtk_file_filter_add_pattern (filter, tmp);
 313                         gtk_file_filter_add_pattern (all_img_filter, tmp);
 314                         g_free (tmp);
 315                 }
 316                 g_strfreev (pattern);
 317
 318                 filters = g_slist_prepend (filters, filter);
 319         }
 320         g_slist_free (formats);
 321
 322         /* Add filter to filechooser */
 323         gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (chooser), all_file_filter);
 324         gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (chooser), all_img_filter);
 325         gtk_file_chooser_set_filter (GTK_FILE_CHOOSER (chooser), all_img_filter);
 326
 327         for (it = filters; it != NULL; it = it->next) {
 328                 gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (chooser),
 329                                              GTK_FILE_FILTER (it->data));
 330         }
 331         g_slist_free (filters);
 332 }