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 "object-editor.h"
  25
  26 #include <glib/gi18n.h>
  27 #include <gtk/gtkimage.h>
  28 #include <gtk/gtkfilechooserbutton.h>
  29 #include <gtk/gtkcombobox.h>
  30 #include <gtk/gtktogglebutton.h>
  31 #include <math.h>
  32
  33 #include "prefs.h"
  34
  35 #include "object-editor-private.h"
  36
  37 #include "debug.h"
  38
  39 /*===========================================*/
  40 /* Private macros                            */
  41 /*===========================================*/
  42
  43 /*===========================================*/
  44 /* Private data types                        */
  45 /*===========================================*/
  46
  47 /*===========================================*/
  48 /* Private globals                           */
  49 /*===========================================*/
  50
  51 /*===========================================*/
  52 /* Local function prototypes                 */
  53 /*===========================================*/
  54
  55 static void img_radio_toggled_cb                (glObjectEditor        *editor);
  56
  57 static void update_preview_cb                   (GtkFileChooser *file_chooser,
  58                                                  gpointer        data);
  59 static void add_image_filters_to_chooser        (GtkFileChooser *file_chooser);
  60
  61
  62 \f
  63 /*--------------------------------------------------------------------------*/
  64 /* PRIVATE.  Prepare image page.                                             */
  65 /*--------------------------------------------------------------------------*/
  66 void
  67 gl_object_editor_prepare_image_page (glObjectEditor *editor)
  68 {
  69         GdkColor      *gdk_color;
  70         GtkFileFilter *filter;
  71         GtkWidget     *preview;
  72
  73
  74         gl_debug (DEBUG_EDITOR, "START");
  75
  76         /* Extract widgets from XML tree. */
  77         editor->priv->img_page_vbox    = glade_xml_get_widget (editor->priv->gui,
  78                                                                "img_page_vbox");
  79         editor->priv->img_file_radio   = glade_xml_get_widget (editor->priv->gui,
  80                                                                "img_file_radio");
  81         editor->priv->img_key_radio    = glade_xml_get_widget (editor->priv->gui,
  82                                                                "img_key_radio");
  83         editor->priv->img_file_button  = glade_xml_get_widget (editor->priv->gui,
  84                                                                "img_file_button");
  85         editor->priv->img_key_combo    = glade_xml_get_widget (editor->priv->gui,
  86                                                                "img_key_combo");
  87
  88         gl_util_combo_box_add_text_model ( GTK_COMBO_BOX(editor->priv->img_key_combo));
  89
  90         /* Modify file button properties. */
  91         add_image_filters_to_chooser (GTK_FILE_CHOOSER (editor->priv->img_file_button));
  92         preview = gtk_image_new ();
  93         gtk_file_chooser_set_preview_widget (GTK_FILE_CHOOSER (editor->priv->img_file_button), preview);
  94         g_signal_connect (G_OBJECT (editor->priv->img_file_button),
  95                           "update-preview",
  96                           G_CALLBACK (update_preview_cb), preview);
  97
  98         /* Un-hide */
  99         gtk_widget_show_all (editor->priv->img_page_vbox);
 100
 101         /* Connect signals */
 102         g_signal_connect_swapped (G_OBJECT (editor->priv->img_file_button),
 103                                   "selection-changed",
 104                                   G_CALLBACK (gl_object_editor_changed_cb),
 105                                   G_OBJECT (editor));
 106         g_signal_connect_swapped (G_OBJECT (editor->priv->img_key_combo),
 107                                   "changed",
 108                                   G_CALLBACK (gl_object_editor_changed_cb),
 109                                   G_OBJECT (editor));
 110         g_signal_connect_swapped (G_OBJECT (editor->priv->img_file_radio),
 111                                   "toggled",
 112                                   G_CALLBACK (img_radio_toggled_cb),
 113                                   G_OBJECT (editor));
 114         g_signal_connect_swapped (G_OBJECT (editor->priv->img_key_radio),
 115                                   "toggled",
 116                                   G_CALLBACK (img_radio_toggled_cb),
 117                                   G_OBJECT (editor));
 118
 119         gl_debug (DEBUG_EDITOR, "END");
 120 }
 121
 122 /*--------------------------------------------------------------------------*/
 123 /* PRIVATE.  image radio callback.                                          */
 124 /*--------------------------------------------------------------------------*/
 125 static void
 126 img_radio_toggled_cb (glObjectEditor *editor)
 127 {
 128         gl_debug (DEBUG_WDGT, "START");
 129
 130         if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (editor->priv->img_file_radio))) {
 131                 gtk_widget_set_sensitive (editor->priv->img_file_button, TRUE);
 132                 gtk_widget_set_sensitive (editor->priv->img_key_combo, FALSE);
 133         } else {
 134                 gtk_widget_set_sensitive (editor->priv->img_file_button, FALSE);
 135                 gtk_widget_set_sensitive (editor->priv->img_key_combo, TRUE);
 136         }
 137
 138         /* Emit our "changed" signal */
 139         g_signal_emit (G_OBJECT (editor), gl_object_editor_signals[CHANGED], 0);
 140
 141         gl_debug (DEBUG_WDGT, "END");
 142 }
 143
 144 /*****************************************************************************/
 145 /* Set image.                                                                */
 146 /*****************************************************************************/
 147 void
 148 gl_object_editor_set_image (glObjectEditor      *editor,
 149                             gboolean             merge_flag,
 150                             glTextNode          *text_node)
 151 {
 152         gl_debug (DEBUG_EDITOR, "START");
 153
 154         g_signal_handlers_block_by_func (G_OBJECT (editor->priv->img_file_button),
 155                                          G_CALLBACK (gl_object_editor_changed_cb),
 156                                          editor);
 157         g_signal_handlers_block_by_func (G_OBJECT (editor->priv->img_key_combo),
 158                                          G_CALLBACK (gl_object_editor_changed_cb),
 159                                          editor);
 160
 161         gtk_widget_set_sensitive (editor->priv->img_key_radio, merge_flag);
 162
 163         if (!text_node->field_flag) {
 164
 165                 gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON
 166                                               (editor->priv->img_file_radio), TRUE);
 167                 gtk_widget_set_sensitive (editor->priv->img_file_button, TRUE);
 168                 gtk_widget_set_sensitive (editor->priv->img_key_combo, FALSE);
 169
 170                 if (text_node->data != NULL ) {
 171                         gtk_file_chooser_set_filename (GTK_FILE_CHOOSER(editor->priv->img_file_button),
 172                                                        text_node->data);
 173                 } else {
 174                         gtk_file_chooser_unselect_all (GTK_FILE_CHOOSER(editor->priv->img_file_button));
 175                 }
 176         } else {
 177
 178                 gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON
 179                                               (editor->priv->img_key_radio), TRUE);
 180
 181                 gtk_widget_set_sensitive (editor->priv->img_file_button, FALSE);
 182                 gtk_widget_set_sensitive (editor->priv->img_key_combo, TRUE);
 183
 184                 gl_util_combo_box_set_active_text (GTK_COMBO_BOX (editor->priv->img_key_combo),
 185                                                    text_node->data);
 186         }
 187
 188         g_signal_handlers_unblock_by_func (G_OBJECT (editor->priv->img_file_button),
 189                                            G_CALLBACK (gl_object_editor_changed_cb),
 190                                            editor);
 191         g_signal_handlers_unblock_by_func (G_OBJECT (editor->priv->img_key_combo),
 192                                            G_CALLBACK (gl_object_editor_changed_cb),
 193                                            editor);
 194
 195         gl_debug (DEBUG_EDITOR, "END");
 196 }
 197
 198 /*****************************************************************************/
 199 /* Query image.                                                              */
 200 /*****************************************************************************/
 201 glTextNode *
 202 gl_object_editor_get_image (glObjectEditor      *editor)
 203 {
 204         glTextNode *text_node;
 205
 206         gl_debug (DEBUG_EDITOR, "START");
 207
 208         text_node = g_new0(glTextNode,1);
 209
 210         if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (editor->priv->img_file_radio))) {
 211                 text_node->field_flag = FALSE;
 212                 text_node->data =
 213                         gtk_file_chooser_get_filename (GTK_FILE_CHOOSER(editor->priv->img_file_button));
 214         } else {
 215                 text_node->field_flag = TRUE;
 216                 text_node->data =
 217                         gtk_combo_box_get_active_text (GTK_COMBO_BOX (editor->priv->img_key_combo));
 218         }
 219
 220         gl_debug (DEBUG_EDITOR, "text_node: field_flag=%d, data=%s",
 221                   text_node->field_flag, text_node->data);
 222
 223         gl_debug (DEBUG_EDITOR, "END");
 224
 225         return text_node;
 226 }
 227
 228 /*--------------------------------------------------------------------------*/
 229 /* PRIVATE.  Update preview image.                                          */
 230 /*--------------------------------------------------------------------------*/
 231 static void
 232 update_preview_cb (GtkFileChooser *file_chooser, gpointer data)
 233 {
 234   GtkWidget *preview;
 235   char *filename;
 236   GdkPixbuf *pixbuf;
 237   gboolean have_preview;
 238
 239   preview = GTK_WIDGET (data);
 240   filename = gtk_file_chooser_get_preview_filename (file_chooser);
 241
 242   if (filename) {
 243           pixbuf = gdk_pixbuf_new_from_file_at_size (filename, 128, 128, NULL);
 244           have_preview = (pixbuf != NULL);
 245           g_free (filename);
 246
 247           gtk_image_set_from_pixbuf (GTK_IMAGE (preview), pixbuf);
 248           if (pixbuf)
 249                   gdk_pixbuf_unref (pixbuf);
 250
 251           gtk_file_chooser_set_preview_widget_active (file_chooser,
 252                                                       have_preview);
 253   } else {
 254           gtk_file_chooser_set_preview_widget_active (file_chooser, FALSE);
 255   }
 256 }
 257
 258 /*--------------------------------------------------------------------------*/
 259 /* PRIVATE.  Add filters to file chooser.                                   */
 260 /*           Based on eog's eog_file_selection_add_filter().                */
 261 /*--------------------------------------------------------------------------*/
 262 static void
 263 add_image_filters_to_chooser (GtkFileChooser *chooser)
 264 {
 265         GtkFileFilter *all_file_filter;
 266         GtkFileFilter *all_img_filter;
 267         GSList        *formats;
 268         GSList        *it;
 269         GtkFileFilter *filter;
 270         GSList        *filters = NULL;
 271         gchar        **mime_types, **pattern, *tmp;
 272         int            i;
 273
 274         /* All Files Filter */
 275         all_file_filter = gtk_file_filter_new ();
 276         gtk_file_filter_set_name (all_file_filter, _("All Files"));
 277         gtk_file_filter_add_pattern (all_file_filter, "*");
 278
 279         /* All Image Filter */
 280         all_img_filter = gtk_file_filter_new ();
 281         gtk_file_filter_set_name (all_img_filter, _("All Images"));
 282
 283         /* Individual image filters */
 284         formats = gdk_pixbuf_get_formats ();
 285         for (it = formats; it != NULL; it = it->next) {
 286                 gchar *filter_name;
 287                 GdkPixbufFormat *format;
 288                 filter = gtk_file_filter_new ();
 289                 gchar *description, *name;
 290
 291                 format = (GdkPixbufFormat*) it->data;
 292
 293                 /* Filter name: First description then file extension, eg. "The PNG-Format (*.png)".*/
 294                 description = gdk_pixbuf_format_get_description (format);
 295                 name = gdk_pixbuf_format_get_name (format);
 296                 filter_name = g_strdup_printf (_("%s (*.%s)"), description, name);
 297                 g_free (description);
 298                 g_free (name);
 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 }