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/gtkeditable.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         editor->priv->img_key_entry    = glade_xml_get_widget (editor->priv->gui,
  88                                                                "img_key_entry");
  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_entry),
 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         gint pos;
 153
 154         gl_debug (DEBUG_EDITOR, "START");
 155
 156         g_signal_handlers_block_by_func (G_OBJECT (editor->priv->img_file_button),
 157                                          G_CALLBACK (gl_object_editor_changed_cb),
 158                                          editor);
 159         g_signal_handlers_block_by_func (G_OBJECT (editor->priv->img_key_entry),
 160                                          G_CALLBACK (gl_object_editor_changed_cb),
 161                                          editor);
 162
 163         gtk_widget_set_sensitive (editor->priv->img_key_radio, merge_flag);
 164
 165         if (!text_node->field_flag) {
 166
 167                 gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON
 168                                               (editor->priv->img_file_radio), TRUE);
 169                 gtk_widget_set_sensitive (editor->priv->img_file_button, TRUE);
 170                 gtk_widget_set_sensitive (editor->priv->img_key_combo, FALSE);
 171
 172                 if (text_node->data != NULL ) {
 173                         gtk_file_chooser_set_filename (GTK_FILE_CHOOSER(editor->priv->img_file_button),
 174                                                        text_node->data);
 175                 } else {
 176                         gtk_file_chooser_unselect_all (GTK_FILE_CHOOSER(editor->priv->img_file_button));
 177                 }
 178         } else {
 179
 180                 gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON
 181                                               (editor->priv->img_key_radio), TRUE);
 182
 183                 gtk_widget_set_sensitive (editor->priv->img_file_button, FALSE);
 184                 gtk_widget_set_sensitive (editor->priv->img_key_combo, TRUE);
 185
 186                 gtk_editable_delete_text (GTK_EDITABLE (editor->priv->img_key_entry), 0, -1);
 187                 pos = 0;
 188                 gtk_editable_insert_text (GTK_EDITABLE (editor->priv->img_key_entry),
 189                                           text_node->data,
 190                                           strlen (text_node->data),
 191                                           &pos);
 192         }
 193
 194         g_signal_handlers_unblock_by_func (G_OBJECT (editor->priv->img_file_button),
 195                                            G_CALLBACK (gl_object_editor_changed_cb),
 196                                            editor);
 197         g_signal_handlers_unblock_by_func (G_OBJECT (editor->priv->img_key_entry),
 198                                            G_CALLBACK (gl_object_editor_changed_cb),
 199                                            editor);
 200
 201         gl_debug (DEBUG_EDITOR, "END");
 202 }
 203
 204 /*****************************************************************************/
 205 /* Query image.                                                              */
 206 /*****************************************************************************/
 207 glTextNode *
 208 gl_object_editor_get_image (glObjectEditor      *editor)
 209 {
 210         glTextNode *text_node;
 211
 212         gl_debug (DEBUG_EDITOR, "START");
 213
 214         text_node = g_new0(glTextNode,1);
 215
 216         if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (editor->priv->img_file_radio))) {
 217                 text_node->field_flag = FALSE;
 218                 text_node->data =
 219                         gtk_file_chooser_get_filename (GTK_FILE_CHOOSER(editor->priv->img_file_button));
 220         } else {
 221                 text_node->field_flag = TRUE;
 222                 text_node->data =
 223                     gtk_editable_get_chars (GTK_EDITABLE (editor->priv->img_key_entry),
 224                                             0, -1);
 225         }
 226
 227         gl_debug (DEBUG_EDITOR, "text_node: field_flag=%d, data=%s",
 228                   text_node->field_flag, text_node->data);
 229
 230         gl_debug (DEBUG_EDITOR, "END");
 231
 232         return text_node;
 233 }
 234
 235 /*--------------------------------------------------------------------------*/
 236 /* PRIVATE.  Update preview image.                                          */
 237 /*--------------------------------------------------------------------------*/
 238 static void
 239 update_preview_cb (GtkFileChooser *file_chooser, gpointer data)
 240 {
 241   GtkWidget *preview;
 242   char *filename;
 243   GdkPixbuf *pixbuf;
 244   gboolean have_preview;
 245
 246   preview = GTK_WIDGET (data);
 247   filename = gtk_file_chooser_get_preview_filename (file_chooser);
 248
 249   if (filename) {
 250           pixbuf = gdk_pixbuf_new_from_file_at_size (filename, 128, 128, NULL);
 251           have_preview = (pixbuf != NULL);
 252           g_free (filename);
 253
 254           gtk_image_set_from_pixbuf (GTK_IMAGE (preview), pixbuf);
 255           if (pixbuf)
 256                   gdk_pixbuf_unref (pixbuf);
 257
 258           gtk_file_chooser_set_preview_widget_active (file_chooser,
 259                                                       have_preview);
 260   } else {
 261           gtk_file_chooser_set_preview_widget_active (file_chooser, FALSE);
 262   }
 263 }
 264
 265 /*--------------------------------------------------------------------------*/
 266 /* PRIVATE.  Add filters to file chooser.                                   */
 267 /*           Based on eog's eog_file_selection_add_filter().                */
 268 /*--------------------------------------------------------------------------*/
 269 static void
 270 add_image_filters_to_chooser (GtkFileChooser *chooser)
 271 {
 272         GtkFileFilter *all_file_filter;
 273         GtkFileFilter *all_img_filter;
 274         GSList        *formats;
 275         GSList        *it;
 276         GtkFileFilter *filter;
 277         GSList        *filters = NULL;
 278         gchar        **mime_types, **pattern, *tmp;
 279         int            i;
 280
 281         /* All Files Filter */
 282         all_file_filter = gtk_file_filter_new ();
 283         gtk_file_filter_set_name (all_file_filter, _("All Files"));
 284         gtk_file_filter_add_pattern (all_file_filter, "*");
 285
 286         /* All Image Filter */
 287         all_img_filter = gtk_file_filter_new ();
 288         gtk_file_filter_set_name (all_img_filter, _("All Images"));
 289
 290         /* Individual image filters */
 291         formats = gdk_pixbuf_get_formats ();
 292         for (it = formats; it != NULL; it = it->next) {
 293                 char *filter_name;
 294                 GdkPixbufFormat *format;
 295                 filter = gtk_file_filter_new ();
 296
 297                 format = (GdkPixbufFormat*) it->data;
 298
 299                 /* Filter name: First description then file extension, eg. "The PNG-Format (*.png)".*/
 300                 filter_name = g_strdup_printf (_("%s (*.%s)"),
 301                                                gdk_pixbuf_format_get_description (format),
 302                                                gdk_pixbuf_format_get_name (format));
 303                 gtk_file_filter_set_name (filter, filter_name);
 304                 g_free (filter_name);
 305
 306                 mime_types = gdk_pixbuf_format_get_mime_types ((GdkPixbufFormat *) it->data);
 307                 for (i = 0; mime_types[i] != NULL; i++) {
 308                         gtk_file_filter_add_mime_type (filter, mime_types[i]);
 309                         gtk_file_filter_add_mime_type (all_img_filter, mime_types[i]);
 310                 }
 311                 g_strfreev (mime_types);
 312
 313                 pattern = gdk_pixbuf_format_get_extensions ((GdkPixbufFormat *) it->data);
 314                 for (i = 0; pattern[i] != NULL; i++) {
 315                         tmp = g_strconcat ("*.", pattern[i], NULL);
 316                         gtk_file_filter_add_pattern (filter, tmp);
 317                         gtk_file_filter_add_pattern (all_img_filter, tmp);
 318                         g_free (tmp);
 319                 }
 320                 g_strfreev (pattern);
 321
 322                 filters = g_slist_prepend (filters, filter);
 323         }
 324         g_slist_free (formats);
 325
 326         /* Add filter to filechooser */
 327         gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (chooser), all_file_filter);
 328         gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (chooser), all_img_filter);
 329         gtk_file_chooser_set_filter (GTK_FILE_CHOOSER (chooser), all_img_filter);
 330
 331         for (it = filters; it != NULL; it = it->next) {
 332                 gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (chooser),
 333                                              GTK_FILE_FILTER (it->data));
 334         }
 335         g_slist_free (filters);
 336 }