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 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         gl_util_get_builder_widgets (editor->priv->gui,
  80                                      "img_page_vbox",   &editor->priv->img_page_vbox,
  81                                      "img_file_radio",  &editor->priv->img_file_radio,
  82                                      "img_key_radio",   &editor->priv->img_key_radio,
  83                                      "img_file_button", &editor->priv->img_file_button,
  84                                      "img_key_combo",   &editor->priv->img_key_combo,
  85                                      NULL);
  86
  87         gl_util_combo_box_add_text_model ( GTK_COMBO_BOX(editor->priv->img_key_combo));
  88
  89         /* Modify file button properties. */
  90         add_image_filters_to_chooser (GTK_FILE_CHOOSER (editor->priv->img_file_button));
  91         preview = gtk_image_new ();
  92         gtk_file_chooser_set_preview_widget (GTK_FILE_CHOOSER (editor->priv->img_file_button), preview);
  93         g_signal_connect (G_OBJECT (editor->priv->img_file_button),
  94                           "update-preview",
  95                           G_CALLBACK (update_preview_cb), preview);
  96
  97         /* Un-hide */
  98         gtk_widget_show_all (editor->priv->img_page_vbox);
  99
 100         /* Connect signals */
 101         g_signal_connect_swapped (G_OBJECT (editor->priv->img_file_button),
 102                                   "selection-changed",
 103                                   G_CALLBACK (img_selection_changed_cb),
 104                                   G_OBJECT (editor));
 105         g_signal_connect_swapped (G_OBJECT (editor->priv->img_key_combo),
 106                                   "changed",
 107                                   G_CALLBACK (gl_object_editor_changed_cb),
 108                                   G_OBJECT (editor));
 109         g_signal_connect_swapped (G_OBJECT (editor->priv->img_file_radio),
 110                                   "toggled",
 111                                   G_CALLBACK (img_radio_toggled_cb),
 112                                   G_OBJECT (editor));
 113         g_signal_connect_swapped (G_OBJECT (editor->priv->img_key_radio),
 114                                   "toggled",
 115                                   G_CALLBACK (img_radio_toggled_cb),
 116                                   G_OBJECT (editor));
 117
 118         gl_debug (DEBUG_EDITOR, "END");
 119 }
 120
 121 /*--------------------------------------------------------------------------*/
 122 /* PRIVATE.  image radio callback.                                          */
 123 /*--------------------------------------------------------------------------*/
 124 static void
 125 img_radio_toggled_cb (glObjectEditor *editor)
 126 {
 127         if (editor->priv->stop_signals) return;
 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         editor->priv->stop_signals = TRUE;
 156
 157         gtk_widget_set_sensitive (editor->priv->img_key_radio, merge_flag);
 158
 159         if (!text_node->field_flag) {
 160
 161                 gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON
 162                                               (editor->priv->img_file_radio), TRUE);
 163                 gtk_widget_set_sensitive (editor->priv->img_file_button, TRUE);
 164                 gtk_widget_set_sensitive (editor->priv->img_key_combo, FALSE);
 165
 166                 if (text_node->data != NULL ) {
 167                         gtk_file_chooser_set_filename (GTK_FILE_CHOOSER(editor->priv->img_file_button),
 168                                                        text_node->data);
 169                 } else {
 170                         gtk_file_chooser_unselect_all (GTK_FILE_CHOOSER(editor->priv->img_file_button));
 171                 }
 172         } else {
 173
 174                 gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON
 175                                               (editor->priv->img_key_radio), TRUE);
 176
 177                 gtk_widget_set_sensitive (editor->priv->img_file_button, FALSE);
 178                 gtk_widget_set_sensitive (editor->priv->img_key_combo, TRUE);
 179
 180                 gl_util_combo_box_set_active_text (GTK_COMBO_BOX (editor->priv->img_key_combo),
 181                                                    text_node->data);
 182         }
 183
 184         editor->priv->stop_signals = FALSE;
 185
 186         gl_debug (DEBUG_EDITOR, "END");
 187 }
 188
 189 /*****************************************************************************/
 190 /* Query image.                                                              */
 191 /*****************************************************************************/
 192 glTextNode *
 193 gl_object_editor_get_image (glObjectEditor      *editor)
 194 {
 195         glTextNode *text_node;
 196
 197         gl_debug (DEBUG_EDITOR, "START");
 198
 199         text_node = g_new0(glTextNode,1);
 200
 201         if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (editor->priv->img_file_radio))) {
 202                 text_node->field_flag = FALSE;
 203                 text_node->data =
 204                         gtk_file_chooser_get_filename (GTK_FILE_CHOOSER(editor->priv->img_file_button));
 205         } else {
 206                 text_node->field_flag = TRUE;
 207                 text_node->data =
 208                         gtk_combo_box_get_active_text (GTK_COMBO_BOX (editor->priv->img_key_combo));
 209         }
 210
 211         gl_debug (DEBUG_EDITOR, "text_node: field_flag=%d, data=%s",
 212                   text_node->field_flag, text_node->data);
 213
 214         gl_debug (DEBUG_EDITOR, "END");
 215
 216         return text_node;
 217 }
 218
 219 /*--------------------------------------------------------------------------*/
 220 /* PRIVATE.  Update preview image.                                          */
 221 /*--------------------------------------------------------------------------*/
 222 static void
 223 update_preview_cb (GtkFileChooser *file_chooser, gpointer data)
 224 {
 225         GtkWidget *preview;
 226         char *filename;
 227         GdkPixbuf *pixbuf;
 228         gboolean have_preview;
 229
 230         preview = GTK_WIDGET (data);
 231         filename = gtk_file_chooser_get_preview_filename (file_chooser);
 232
 233         if (filename) {
 234                 pixbuf = gdk_pixbuf_new_from_file_at_size (filename, 128, 128, NULL);
 235                 have_preview = (pixbuf != NULL);
 236                 g_free (filename);
 237
 238                 gtk_image_set_from_pixbuf (GTK_IMAGE (preview), pixbuf);
 239                 if (pixbuf)
 240                         gdk_pixbuf_unref (pixbuf);
 241
 242                 gtk_file_chooser_set_preview_widget_active (file_chooser,
 243                                                             have_preview);
 244         } else {
 245                 gtk_file_chooser_set_preview_widget_active (file_chooser, FALSE);
 246         }
 247 }
 248
 249 /*--------------------------------------------------------------------------*/
 250 /* PRIVATE.  Add filters to file chooser.                                   */
 251 /*           Based on eog's eog_file_selection_add_filter().                */
 252 /*--------------------------------------------------------------------------*/
 253 static void
 254 add_image_filters_to_chooser (GtkFileChooser *chooser)
 255 {
 256         GtkFileFilter *all_file_filter;
 257         GtkFileFilter *all_img_filter;
 258         GSList        *formats;
 259         GSList        *it;
 260         GtkFileFilter *filter;
 261         GSList        *filters = NULL;
 262         gchar        **mime_types, **pattern, *tmp;
 263         int            i;
 264
 265         /* All Files Filter */
 266         all_file_filter = gtk_file_filter_new ();
 267         gtk_file_filter_set_name (all_file_filter, _("All Files"));
 268         gtk_file_filter_add_pattern (all_file_filter, "*");
 269
 270         /* All Image Filter */
 271         all_img_filter = gtk_file_filter_new ();
 272         gtk_file_filter_set_name (all_img_filter, _("All Images"));
 273
 274         /* Individual image filters */
 275         formats = gdk_pixbuf_get_formats ();
 276         for (it = formats; it != NULL; it = it->next) {
 277                 gchar *filter_name;
 278                 GdkPixbufFormat *format;
 279                 filter = gtk_file_filter_new ();
 280                 gchar *description, *name;
 281
 282                 format = (GdkPixbufFormat*) it->data;
 283
 284                 /* Filter name: First description then file extension, eg. "The PNG-Format (*.png)".*/
 285                 description = gdk_pixbuf_format_get_description (format);
 286                 name = gdk_pixbuf_format_get_name (format);
 287                 filter_name = g_strdup_printf (_("%s (*.%s)"), description, name);
 288                 g_free (description);
 289                 g_free (name);
 290                 gtk_file_filter_set_name (filter, filter_name);
 291                 g_free (filter_name);
 292
 293                 mime_types = gdk_pixbuf_format_get_mime_types ((GdkPixbufFormat *) it->data);
 294                 for (i = 0; mime_types[i] != NULL; i++) {
 295                         gtk_file_filter_add_mime_type (filter, mime_types[i]);
 296                         gtk_file_filter_add_mime_type (all_img_filter, mime_types[i]);
 297                 }
 298                 g_strfreev (mime_types);
 299
 300                 pattern = gdk_pixbuf_format_get_extensions ((GdkPixbufFormat *) it->data);
 301                 for (i = 0; pattern[i] != NULL; i++) {
 302                         tmp = g_strconcat ("*.", pattern[i], NULL);
 303                         gtk_file_filter_add_pattern (filter, tmp);
 304                         gtk_file_filter_add_pattern (all_img_filter, tmp);
 305                         g_free (tmp);
 306                 }
 307                 g_strfreev (pattern);
 308
 309                 filters = g_slist_prepend (filters, filter);
 310         }
 311         g_slist_free (formats);
 312
 313         /* Add filter to filechooser */
 314         gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (chooser), all_file_filter);
 315         gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (chooser), all_img_filter);
 316         gtk_file_chooser_set_filter (GTK_FILE_CHOOSER (chooser), all_img_filter);
 317
 318         for (it = filters; it != NULL; it = it->next) {
 319                 gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (chooser),
 320                                              GTK_FILE_FILTER (it->data));
 321         }
 322         g_slist_free (filters);
 323 }
 324
 325 /*--------------------------------------------------------------------------*/
 326 /* PRIVATE. Selection changed callback.                                     */
 327 /*--------------------------------------------------------------------------*/
 328 static void
 329 img_selection_changed_cb (glObjectEditor *editor)
 330 {
 331         gchar *filename;
 332
 333         if (editor->priv->stop_signals) return;
 334
 335         gl_debug (DEBUG_EDITOR, "START");
 336
 337         filename = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER(editor->priv->img_file_button));
 338         if (filename != NULL)
 339         {
 340                 /* Emit our "changed" signal */
 341                 g_signal_emit (G_OBJECT (editor), gl_object_editor_signals[CHANGED], 0);
 342         }
 343         g_free (filename);
 344
 345         gl_debug (DEBUG_EDITOR, "END");
 346 }
 347