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

   1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*- */
   2
   3 /*
   4  *  (GLABELS) Label and Business Card Creation program for GNOME
   5  *
   6  *  object-editor.c:  object properties editor module
   7  *
   8  *  Copyright (C) 2003  Jim Evins <evins@snaught.com>.
   9  *
  10  *  This program is free software; you can redistribute it and/or modify
  11  *  it under the terms of the GNU General Public License as published by
  12  *  the Free Software Foundation; either version 2 of the License, or
  13  *  (at your option) any later version.
  14  *
  15  *  This program is distributed in the hope that it will be useful,
  16  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  *  GNU General Public License for more details.
  19  *
  20  *  You should have received a copy of the GNU General Public License
  21  *  along with this program; if not, write to the Free Software
  22  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  23  */
  24 #include <config.h>
  25
  26 #include "object-editor.h"
  27
  28 #include <glib/gi18n.h>
  29 #include <gtk/gtkimage.h>
  30 #include <gtk/gtkfilechooserbutton.h>
  31 #include <gtk/gtkcombobox.h>
  32 #include <gtk/gtktogglebutton.h>
  33 #include <math.h>
  34
  35 #include "prefs.h"
  36 #include "util.h"
  37
  38 #include "object-editor-private.h"
  39
  40 #include "debug.h"
  41
  42 /*===========================================*/
  43 /* Private macros                            */
  44 /*===========================================*/
  45
  46 /*===========================================*/
  47 /* Private data types                        */
  48 /*===========================================*/
  49
  50 /*===========================================*/
  51 /* Private globals                           */
  52 /*===========================================*/
  53
  54 /*===========================================*/
  55 /* Local function prototypes                 */
  56 /*===========================================*/
  57
  58 static void img_radio_toggled_cb                (glObjectEditor        *editor);
  59
  60 static void update_preview_cb                   (GtkFileChooser *file_chooser,
  61                                                  gpointer        data);
  62 static void add_image_filters_to_chooser        (GtkFileChooser *file_chooser);
  63
  64
  65 \f
  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         editor->priv->img_page_vbox    = glade_xml_get_widget (editor->priv->gui,
  79                                                                "img_page_vbox");
  80         editor->priv->img_file_radio   = glade_xml_get_widget (editor->priv->gui,
  81                                                                "img_file_radio");
  82         editor->priv->img_key_radio    = glade_xml_get_widget (editor->priv->gui,
  83                                                                "img_key_radio");
  84         editor->priv->img_file_button  = glade_xml_get_widget (editor->priv->gui,
  85                                                                "img_file_button");
  86         editor->priv->img_key_combo    = glade_xml_get_widget (editor->priv->gui,
  87                                                                "img_key_combo");
  88
  89         gl_util_combo_box_add_text_model ( GTK_COMBO_BOX(editor->priv->img_key_combo));
  90
  91         /* Modify file button properties. */
  92         add_image_filters_to_chooser (GTK_FILE_CHOOSER (editor->priv->img_file_button));
  93         preview = gtk_image_new ();
  94         gtk_file_chooser_set_preview_widget (GTK_FILE_CHOOSER (editor->priv->img_file_button), preview);
  95         g_signal_connect (G_OBJECT (editor->priv->img_file_button),
  96                           "update-preview",
  97                           G_CALLBACK (update_preview_cb), preview);
  98
  99         /* Un-hide */
 100         gtk_widget_show_all (editor->priv->img_page_vbox);
 101
 102         /* Connect signals */
 103         g_signal_connect_swapped (G_OBJECT (editor->priv->img_file_button),
 104                                   "selection-changed",
 105                                   G_CALLBACK (gl_object_editor_changed_cb),
 106                                   G_OBJECT (editor));
 107         g_signal_connect_swapped (G_OBJECT (editor->priv->img_key_combo),
 108                                   "changed",
 109                                   G_CALLBACK (gl_object_editor_changed_cb),
 110                                   G_OBJECT (editor));
 111         g_signal_connect_swapped (G_OBJECT (editor->priv->img_file_radio),
 112                                   "toggled",
 113                                   G_CALLBACK (img_radio_toggled_cb),
 114                                   G_OBJECT (editor));
 115         g_signal_connect_swapped (G_OBJECT (editor->priv->img_key_radio),
 116                                   "toggled",
 117                                   G_CALLBACK (img_radio_toggled_cb),
 118                                   G_OBJECT (editor));
 119
 120         gl_debug (DEBUG_EDITOR, "END");
 121 }
 122
 123 /*--------------------------------------------------------------------------*/
 124 /* PRIVATE.  image radio callback.                                          */
 125 /*--------------------------------------------------------------------------*/
 126 static void
 127 img_radio_toggled_cb (glObjectEditor *editor)
 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 /* Set image.                                                                */
 147 /*****************************************************************************/
 148 void
 149 gl_object_editor_set_image (glObjectEditor      *editor,
 150                             gboolean             merge_flag,
 151                             glTextNode          *text_node)
 152 {
 153         gl_debug (DEBUG_EDITOR, "START");
 154
 155         g_signal_handlers_block_by_func (G_OBJECT (editor->priv->img_file_button),
 156                                          G_CALLBACK (gl_object_editor_changed_cb),
 157                                          editor);
 158         g_signal_handlers_block_by_func (G_OBJECT (editor->priv->img_key_combo),
 159                                          G_CALLBACK (gl_object_editor_changed_cb),
 160                                          editor);
 161
 162         gtk_widget_set_sensitive (editor->priv->img_key_radio, merge_flag);
 163
 164         if (!text_node->field_flag) {
 165
 166                 gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON
 167                                               (editor->priv->img_file_radio), TRUE);
 168                 gtk_widget_set_sensitive (editor->priv->img_file_button, TRUE);
 169                 gtk_widget_set_sensitive (editor->priv->img_key_combo, FALSE);
 170
 171                 if (text_node->data != NULL ) {
 172                         gtk_file_chooser_set_filename (GTK_FILE_CHOOSER(editor->priv->img_file_button),
 173                                                        text_node->data);
 174                 } else {
 175                         gtk_file_chooser_unselect_all (GTK_FILE_CHOOSER(editor->priv->img_file_button));
 176                 }
 177         } else {
 178
 179                 gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON
 180                                               (editor->priv->img_key_radio), TRUE);
 181
 182                 gtk_widget_set_sensitive (editor->priv->img_file_button, FALSE);
 183                 gtk_widget_set_sensitive (editor->priv->img_key_combo, TRUE);
 184
 185                 gl_util_combo_box_set_active_text (GTK_COMBO_BOX (editor->priv->img_key_combo),
 186                                                    text_node->data);
 187         }
 188
 189         g_signal_handlers_unblock_by_func (G_OBJECT (editor->priv->img_file_button),
 190                                            G_CALLBACK (gl_object_editor_changed_cb),
 191                                            editor);
 192         g_signal_handlers_unblock_by_func (G_OBJECT (editor->priv->img_key_combo),
 193                                            G_CALLBACK (gl_object_editor_changed_cb),
 194                                            editor);
 195
 196         gl_debug (DEBUG_EDITOR, "END");
 197 }
 198
 199 /*****************************************************************************/
 200 /* Query image.                                                              */
 201 /*****************************************************************************/
 202 glTextNode *
 203 gl_object_editor_get_image (glObjectEditor      *editor)
 204 {
 205         glTextNode *text_node;
 206
 207         gl_debug (DEBUG_EDITOR, "START");
 208
 209         text_node = g_new0(glTextNode,1);
 210
 211         if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (editor->priv->img_file_radio))) {
 212                 text_node->field_flag = FALSE;
 213                 text_node->data =
 214                         gtk_file_chooser_get_filename (GTK_FILE_CHOOSER(editor->priv->img_file_button));
 215         } else {
 216                 text_node->field_flag = TRUE;
 217                 text_node->data =
 218                         gtk_combo_box_get_active_text (GTK_COMBO_BOX (editor->priv->img_key_combo));
 219         }
 220
 221         gl_debug (DEBUG_EDITOR, "text_node: field_flag=%d, data=%s",
 222                   text_node->field_flag, text_node->data);
 223
 224         gl_debug (DEBUG_EDITOR, "END");
 225
 226         return text_node;
 227 }
 228
 229 /*--------------------------------------------------------------------------*/
 230 /* PRIVATE.  Update preview image.                                          */
 231 /*--------------------------------------------------------------------------*/
 232 static void
 233 update_preview_cb (GtkFileChooser *file_chooser, gpointer data)
 234 {
 235   GtkWidget *preview;
 236   char *filename;
 237   GdkPixbuf *pixbuf;
 238   gboolean have_preview;
 239
 240   preview = GTK_WIDGET (data);
 241   filename = gtk_file_chooser_get_preview_filename (file_chooser);
 242
 243   if (filename) {
 244           pixbuf = gdk_pixbuf_new_from_file_at_size (filename, 128, 128, NULL);
 245           have_preview = (pixbuf != NULL);
 246           g_free (filename);
 247
 248           gtk_image_set_from_pixbuf (GTK_IMAGE (preview), pixbuf);
 249           if (pixbuf)
 250                   gdk_pixbuf_unref (pixbuf);
 251
 252           gtk_file_chooser_set_preview_widget_active (file_chooser,
 253                                                       have_preview);
 254   } else {
 255           gtk_file_chooser_set_preview_widget_active (file_chooser, FALSE);
 256   }
 257 }
 258
 259 /*--------------------------------------------------------------------------*/
 260 /* PRIVATE.  Add filters to file chooser.                                   */
 261 /*           Based on eog's eog_file_selection_add_filter().                */
 262 /*--------------------------------------------------------------------------*/
 263 static void
 264 add_image_filters_to_chooser (GtkFileChooser *chooser)
 265 {
 266         GtkFileFilter *all_file_filter;
 267         GtkFileFilter *all_img_filter;
 268         GSList        *formats;
 269         GSList        *it;
 270         GtkFileFilter *filter;
 271         GSList        *filters = NULL;
 272         gchar        **mime_types, **pattern, *tmp;
 273         int            i;
 274
 275         /* All Files Filter */
 276         all_file_filter = gtk_file_filter_new ();
 277         gtk_file_filter_set_name (all_file_filter, _("All Files"));
 278         gtk_file_filter_add_pattern (all_file_filter, "*");
 279
 280         /* All Image Filter */
 281         all_img_filter = gtk_file_filter_new ();
 282         gtk_file_filter_set_name (all_img_filter, _("All Images"));
 283
 284         /* Individual image filters */
 285         formats = gdk_pixbuf_get_formats ();
 286         for (it = formats; it != NULL; it = it->next) {
 287                 gchar *filter_name;
 288                 GdkPixbufFormat *format;
 289                 filter = gtk_file_filter_new ();
 290                 gchar *description, *name;
 291
 292                 format = (GdkPixbufFormat*) it->data;
 293
 294                 /* Filter name: First description then file extension, eg. "The PNG-Format (*.png)".*/
 295                 description = gdk_pixbuf_format_get_description (format);
 296                 name = gdk_pixbuf_format_get_name (format);
 297                 filter_name = g_strdup_printf (_("%s (*.%s)"), description, name);
 298                 g_free (description);
 299                 g_free (name);
 300                 gtk_file_filter_set_name (filter, filter_name);
 301                 g_free (filter_name);
 302
 303                 mime_types = gdk_pixbuf_format_get_mime_types ((GdkPixbufFormat *) it->data);
 304                 for (i = 0; mime_types[i] != NULL; i++) {
 305                         gtk_file_filter_add_mime_type (filter, mime_types[i]);
 306                         gtk_file_filter_add_mime_type (all_img_filter, mime_types[i]);
 307                 }
 308                 g_strfreev (mime_types);
 309
 310                 pattern = gdk_pixbuf_format_get_extensions ((GdkPixbufFormat *) it->data);
 311                 for (i = 0; pattern[i] != NULL; i++) {
 312                         tmp = g_strconcat ("*.", pattern[i], NULL);
 313                         gtk_file_filter_add_pattern (filter, tmp);
 314                         gtk_file_filter_add_pattern (all_img_filter, tmp);
 315                         g_free (tmp);
 316                 }
 317                 g_strfreev (pattern);
 318
 319                 filters = g_slist_prepend (filters, filter);
 320         }
 321         g_slist_free (formats);
 322
 323         /* Add filter to filechooser */
 324         gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (chooser), all_file_filter);
 325         gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (chooser), all_img_filter);
 326         gtk_file_chooser_set_filter (GTK_FILE_CHOOSER (chooser), all_img_filter);
 327
 328         for (it = filters; it != NULL; it = it->next) {
 329                 gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (chooser),
 330                                              GTK_FILE_FILTER (it->data));
 331         }
 332         g_slist_free (filters);
 333 }