git.sur5r.net Git - glabels/blob - 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 static void img_selection_changed_cb (glObjectEditor *editor);
  65
  66 \f
  67 /*--------------------------------------------------------------------------*/
  68 /* PRIVATE.  Prepare image page.                                             */
  69 /*--------------------------------------------------------------------------*/
  70 void
  71 gl_object_editor_prepare_image_page (glObjectEditor *editor)
  72 {
  73         GtkWidget     *preview;
  74
  75
  76         gl_debug (DEBUG_EDITOR, "START");
  77
  78         /* Extract widgets from XML tree. */
  79         editor->priv->img_page_vbox    = glade_xml_get_widget (editor->priv->gui,
  80                                                                "img_page_vbox");
  81         editor->priv->img_file_radio   = glade_xml_get_widget (editor->priv->gui,
  82                                                                "img_file_radio");
  83         editor->priv->img_key_radio    = glade_xml_get_widget (editor->priv->gui,
  84                                                                "img_key_radio");
  85         editor->priv->img_file_button  = glade_xml_get_widget (editor->priv->gui,
  86                                                                "img_file_button");
  87         editor->priv->img_key_combo    = glade_xml_get_widget (editor->priv->gui,
  88                                                                "img_key_combo");
  89
  90         gl_util_combo_box_add_text_model ( GTK_COMBO_BOX(editor->priv->img_key_combo));
  91
  92         /* Modify file button properties. */
  93         add_image_filters_to_chooser (GTK_FILE_CHOOSER (editor->priv->img_file_button));
  94         preview = gtk_image_new ();
  95         gtk_file_chooser_set_preview_widget (GTK_FILE_CHOOSER (editor->priv->img_file_button), preview);
  96         g_signal_connect (G_OBJECT (editor->priv->img_file_button),
  97                           "update-preview",
  98                           G_CALLBACK (update_preview_cb), preview);
  99
 100         /* Un-hide */
 101         gtk_widget_show_all (editor->priv->img_page_vbox);
 102
 103         /* Connect signals */
 104         g_signal_connect_swapped (G_OBJECT (editor->priv->img_file_button),
 105                                   "selection-changed",
 106                                   G_CALLBACK (img_selection_changed_cb),
 107                                   G_OBJECT (editor));
 108         g_signal_connect_swapped (G_OBJECT (editor->priv->img_key_combo),
 109                                   "changed",
 110                                   G_CALLBACK (gl_object_editor_changed_cb),
 111                                   G_OBJECT (editor));
 112         g_signal_connect_swapped (G_OBJECT (editor->priv->img_file_radio),
 113                                   "toggled",
 114                                   G_CALLBACK (img_radio_toggled_cb),
 115                                   G_OBJECT (editor));
 116         g_signal_connect_swapped (G_OBJECT (editor->priv->img_key_radio),
 117                                   "toggled",
 118                                   G_CALLBACK (img_radio_toggled_cb),
 119                                   G_OBJECT (editor));
 120
 121         gl_debug (DEBUG_EDITOR, "END");
 122 }
 123
 124 /*--------------------------------------------------------------------------*/
 125 /* PRIVATE.  image radio callback.                                          */
 126 /*--------------------------------------------------------------------------*/
 127 static void
 128 img_radio_toggled_cb (glObjectEditor *editor)
 129 {
 130         if (editor->priv->stop_signals) return;
 131
 132         gl_debug (DEBUG_WDGT, "START");
 133
 134         if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (editor->priv->img_file_radio))) {
 135                 gtk_widget_set_sensitive (editor->priv->img_file_button, TRUE);
 136                 gtk_widget_set_sensitive (editor->priv->img_key_combo, FALSE);
 137         } else {
 138                 gtk_widget_set_sensitive (editor->priv->img_file_button, FALSE);
 139                 gtk_widget_set_sensitive (editor->priv->img_key_combo, TRUE);
 140         }
 141
 142         /* Emit our "changed" signal */
 143         g_signal_emit (G_OBJECT (editor), gl_object_editor_signals[CHANGED], 0);
 144
 145         gl_debug (DEBUG_WDGT, "END");
 146 }
 147
 148 /*****************************************************************************/
 149 /* Set image.                                                                */
 150 /*****************************************************************************/
 151 void
 152 gl_object_editor_set_image (glObjectEditor      *editor,
 153                             gboolean             merge_flag,
 154                             glTextNode          *text_node)
 155 {
 156         gl_debug (DEBUG_EDITOR, "START");
 157
 158         editor->priv->stop_signals = TRUE;
 159
 160         gtk_widget_set_sensitive (editor->priv->img_key_radio, merge_flag);
 161
 162         if (!text_node->field_flag || !merge_flag) {
 163
 164                 gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON
 165                                               (editor->priv->img_file_radio), TRUE);
 166                 gtk_widget_set_sensitive (editor->priv->img_file_button, TRUE);
 167                 gtk_widget_set_sensitive (editor->priv->img_key_combo, FALSE);
 168
 169                 if (text_node->data != NULL ) {
 170                         gtk_file_chooser_set_filename (GTK_FILE_CHOOSER(editor->priv->img_file_button),
 171                                                        text_node->data);
 172                 } else {
 173                         gtk_file_chooser_unselect_all (GTK_FILE_CHOOSER(editor->priv->img_file_button));
 174                 }
 175         } else {
 176
 177                 gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON
 178                                               (editor->priv->img_key_radio), TRUE);
 179
 180                 gtk_widget_set_sensitive (editor->priv->img_file_button, FALSE);
 181                 gtk_widget_set_sensitive (editor->priv->img_key_combo, TRUE);
 182
 183                 gl_util_combo_box_set_active_text (GTK_COMBO_BOX (editor->priv->img_key_combo),
 184                                                    text_node->data);
 185         }
 186
 187         editor->priv->stop_signals = FALSE;
 188
 189         gl_debug (DEBUG_EDITOR, "END");
 190 }
 191
 192 /*****************************************************************************/
 193 /* Query image.                                                              */
 194 /*****************************************************************************/
 195 glTextNode *
 196 gl_object_editor_get_image (glObjectEditor      *editor)
 197 {
 198         glTextNode *text_node;
 199
 200         gl_debug (DEBUG_EDITOR, "START");
 201
 202         text_node = g_new0(glTextNode,1);
 203
 204         if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (editor->priv->img_file_radio))) {
 205                 text_node->field_flag = FALSE;
 206                 text_node->data =
 207                         gtk_file_chooser_get_filename (GTK_FILE_CHOOSER(editor->priv->img_file_button));
 208         } else {
 209                 text_node->field_flag = TRUE;
 210                 text_node->data =
 211                         gtk_combo_box_get_active_text (GTK_COMBO_BOX (editor->priv->img_key_combo));
 212         }
 213
 214         gl_debug (DEBUG_EDITOR, "text_node: field_flag=%d, data=%s",
 215                   text_node->field_flag, text_node->data);
 216
 217         gl_debug (DEBUG_EDITOR, "END");
 218
 219         return text_node;
 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                 if (pixbuf)
 243                         gdk_pixbuf_unref (pixbuf);
 244
 245                 gtk_file_chooser_set_preview_widget_active (file_chooser,
 246                                                             have_preview);
 247         } else {
 248                 gtk_file_chooser_set_preview_widget_active (file_chooser, FALSE);
 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 /* PRIVATE. Selection changed callback.                                     */
 330 /*--------------------------------------------------------------------------*/
 331 static void
 332 img_selection_changed_cb (glObjectEditor *editor)
 333 {
 334         gchar *filename;
 335
 336         if (editor->priv->stop_signals) return;
 337
 338         gl_debug (DEBUG_EDITOR, "START");
 339
 340         filename = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER(editor->priv->img_file_button));
 341         if (filename != NULL)
 342         {
 343                 /* Emit our "changed" signal */
 344                 g_signal_emit (G_OBJECT (editor), gl_object_editor_signals[CHANGED], 0);
 345         }
 346         g_free (filename);
 347
 348         gl_debug (DEBUG_EDITOR, "END");
 349 }
 350