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-rw-r--r--glabels2/src/label.c614
1 files changed, 614 insertions, 0 deletions
diff --git a/glabels2/src/label.c b/glabels2/src/label.c
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--- /dev/null
+++ b/glabels2/src/label.c
@@ -0,0 +1,614 @@
+/*
+ * (GLABELS) Label and Business Card Creation program for GNOME
+ *
+ * label.c: GLabels label module
+ *
+ * Copyright (C) 2001-2002 Jim Evins <evins@snaught.com>.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <config.h>
+
+#include <gnome.h>
+
+#include "label.h"
+#include "label-object.h"
+#include "label-text.h"
+#include "label-box.h"
+#include "label-line.h"
+#include "label-ellipse.h"
+#include "label-image.h"
+#include "label-barcode.h"
+#include "template.h"
+#include "marshal.h"
+
+#include "debug.h"
+
+/*========================================================*/
+/* Private macros and constants. */
+/*========================================================*/
+
+/*========================================================*/
+/* Private types. */
+/*========================================================*/
+
+struct _glLabelPrivate {
+
+ glTemplate *template;
+ gboolean rotate_flag;
+
+ gchar *filename;
+ gboolean modified_flag;
+ gint untitled_instance;
+
+ glMerge *merge;
+};
+
+enum {
+ CHANGED,
+ NAME_CHANGED,
+ MODIFIED_CHANGED,
+ LAST_SIGNAL
+};
+
+/*========================================================*/
+/* Private globals. */
+/*========================================================*/
+
+static GObjectClass *parent_class = NULL;
+
+static guint signals[LAST_SIGNAL] = {0};
+
+static guint untitled = 0;
+
+/*========================================================*/
+/* Private function prototypes. */
+/*========================================================*/
+
+static void gl_label_class_init (glLabelClass *klass);
+static void gl_label_instance_init (glLabel *label);
+static void gl_label_finalize (GObject *object);
+
+static void object_changed_cb (glLabelObject *object, glLabel *label);
+static void object_moved_cb (glLabelObject *object,
+ gdouble x, gdouble y, glLabel *label);
+
+
+/*****************************************************************************/
+/* Boilerplate object stuff. */
+/*****************************************************************************/
+GType
+gl_label_get_type (void)
+{
+ static GType type = 0;
+
+ if (!type) {
+ GTypeInfo info = {
+ sizeof (glLabelClass),
+ NULL,
+ NULL,
+ (GClassInitFunc) gl_label_class_init,
+ NULL,
+ NULL,
+ sizeof (glLabel),
+ 0,
+ (GInstanceInitFunc) gl_label_instance_init,
+ };
+
+ type = g_type_register_static (G_TYPE_OBJECT,
+ "glLabel", &info, 0);
+ }
+
+ return type;
+}
+
+static void
+gl_label_class_init (glLabelClass *klass)
+{
+ GObjectClass *object_class = (GObjectClass *) klass;
+
+ gl_debug (DEBUG_LABEL, "START");
+
+ parent_class = g_type_class_peek_parent (klass);
+
+ object_class->finalize = gl_label_finalize;
+
+ signals[CHANGED] =
+ g_signal_new ("changed",
+ G_OBJECT_CLASS_TYPE (object_class),
+ G_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (glLabelClass, changed),
+ NULL, NULL,
+ gl_marshal_VOID__VOID,
+ G_TYPE_NONE,
+ 0);
+ signals[NAME_CHANGED] =
+ g_signal_new ("name_changed",
+ G_OBJECT_CLASS_TYPE (object_class),
+ G_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (glLabelClass, name_changed),
+ NULL, NULL,
+ gl_marshal_VOID__VOID,
+ G_TYPE_NONE,
+ 0);
+ signals[MODIFIED_CHANGED] =
+ g_signal_new ("modified_changed",
+ G_OBJECT_CLASS_TYPE (object_class),
+ G_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (glLabelClass, modified_changed),
+ NULL, NULL,
+ gl_marshal_VOID__VOID,
+ G_TYPE_NONE,
+ 0);
+
+ gl_debug (DEBUG_LABEL, "END");
+}
+
+static void
+gl_label_instance_init (glLabel *label)
+{
+ gl_debug (DEBUG_LABEL, "START");
+
+ label->private = g_new0 (glLabelPrivate, 1);
+ label->private->merge = gl_merge_new();
+
+ gl_debug (DEBUG_LABEL, "END");
+}
+
+static void
+gl_label_finalize (GObject *object)
+{
+ glLabel *label;
+ GList *p, *p_next;
+
+ gl_debug (DEBUG_LABEL, "START");
+
+ g_return_if_fail (object && GL_IS_LABEL (object));
+
+ label = GL_LABEL (object);
+
+ gl_template_free (&label->private->template);
+
+ for (p = label->objects; p != NULL; p = p_next) {
+ p_next = p->next; /* NOTE: p will be left dangling */
+ g_object_unref (G_OBJECT(p->data));
+ }
+
+ gl_merge_free (&label->private->merge);
+
+ g_free (label->private);
+
+ G_OBJECT_CLASS (parent_class)->finalize (object);
+
+ gl_debug (DEBUG_LABEL, "END");
+}
+
+GObject *
+gl_label_new (void)
+{
+ glLabel *label;
+
+ gl_debug (DEBUG_LABEL, "START");
+
+ label = g_object_new (gl_label_get_type(), NULL);
+
+ label->private->modified_flag = FALSE;
+
+ gl_debug (DEBUG_LABEL, "END");
+
+ return G_OBJECT (label);
+}
+
+
+/*****************************************************************************/
+/* Add object to label. */
+/*****************************************************************************/
+void
+gl_label_add_object (glLabel *label,
+ glLabelObject *object)
+{
+ gl_debug (DEBUG_LABEL, "START");
+
+ g_return_if_fail (label && GL_IS_LABEL (label));
+ g_return_if_fail (GL_IS_LABEL_OBJECT (object));
+
+ object->parent = label;
+ label->objects = g_list_append (label->objects, object);
+
+ label->private->modified_flag = TRUE;
+
+ g_signal_emit (G_OBJECT(label), signals[MODIFIED_CHANGED], 0);
+ g_signal_emit (G_OBJECT(label), signals[CHANGED], 0);
+
+ g_signal_connect (G_OBJECT(object), "changed",
+ G_CALLBACK(object_changed_cb), label);
+
+ g_signal_connect (G_OBJECT(object), "moved",
+ G_CALLBACK(object_moved_cb), label);
+
+ gl_debug (DEBUG_LABEL, "END");
+}
+
+/*****************************************************************************/
+/* Remove object from label. */
+/*****************************************************************************/
+void
+gl_label_remove_object (glLabel *label,
+ glLabelObject *object)
+{
+ gl_debug (DEBUG_LABEL, "START");
+
+ g_return_if_fail (label && GL_IS_LABEL (label));
+ g_return_if_fail (GL_IS_LABEL_OBJECT (object));
+
+ object->parent = NULL;
+ label->objects = g_list_remove (label->objects, object);
+
+ if ( G_OBJECT(label)->ref_count /* not finalized */ ) {
+
+ g_signal_handlers_disconnect_by_func (object,
+ G_CALLBACK(object_changed_cb),
+ label);
+ g_signal_handlers_disconnect_by_func (object,
+ G_CALLBACK(object_moved_cb),
+ label);
+
+ label->private->modified_flag = TRUE;
+
+ g_signal_emit (G_OBJECT(label), signals[MODIFIED_CHANGED], 0);
+ g_signal_emit (G_OBJECT(label), signals[CHANGED], 0);
+
+ }
+
+ gl_debug (DEBUG_LABEL, "END");
+}
+
+/*---------------------------------------------------------------------------*/
+/* PRIVATE. Object changed callback. */
+/*---------------------------------------------------------------------------*/
+static void
+object_changed_cb (glLabelObject *object, glLabel *label)
+{
+
+ if ( !label->private->modified_flag ) {
+
+ label->private->modified_flag = TRUE;
+
+ g_signal_emit (G_OBJECT(label), signals[MODIFIED_CHANGED], 0);
+ }
+
+ g_signal_emit (G_OBJECT(label), signals[CHANGED], 0);
+}
+
+/*---------------------------------------------------------------------------*/
+/* PRIVATE. Object moved callback. */
+/*---------------------------------------------------------------------------*/
+static void
+object_moved_cb (glLabelObject *object, gdouble x, gdouble y, glLabel *label)
+{
+
+ if ( !label->private->modified_flag ) {
+
+ label->private->modified_flag = TRUE;
+
+ g_signal_emit (G_OBJECT(label), signals[MODIFIED_CHANGED], 0);
+ }
+
+ g_signal_emit (G_OBJECT(label), signals[CHANGED], 0);
+}
+
+/****************************************************************************/
+/* Bring label object to front/top. */
+/****************************************************************************/
+void
+gl_label_raise_object_to_top (glLabel *label, glLabelObject *object)
+{
+ gl_debug (DEBUG_LABEL, "START");
+
+ /* Move to end of list, representing front most object */
+ label->objects = g_list_remove (label->objects, object);
+ label->objects = g_list_append (label->objects, object);
+
+ label->private->modified_flag = TRUE;
+
+ g_signal_emit (G_OBJECT(label), signals[MODIFIED_CHANGED], 0);
+ g_signal_emit (G_OBJECT(label), signals[CHANGED], 0);
+
+ gl_debug (DEBUG_LABEL, "END");
+}
+
+/****************************************************************************/
+/* Send label object to rear/bottom. */
+/****************************************************************************/
+void
+gl_label_lower_object_to_bottom (glLabel *label, glLabelObject *object)
+{
+ gl_debug (DEBUG_LABEL, "START");
+
+ /* Move to front of list, representing rear most object */
+ label->objects = g_list_remove (label->objects, object);
+ label->objects = g_list_prepend (label->objects, object);
+
+ label->private->modified_flag = TRUE;
+
+ g_signal_emit (G_OBJECT(label), signals[MODIFIED_CHANGED], 0);
+ g_signal_emit (G_OBJECT(label), signals[CHANGED], 0);
+
+ gl_debug (DEBUG_LABEL, "END");
+}
+
+/****************************************************************************/
+/* set template. */
+/****************************************************************************/
+extern void
+gl_label_set_template (glLabel *label,
+ glTemplate *template)
+{
+ gl_debug (DEBUG_LABEL, "START");
+
+ g_return_if_fail (label && GL_IS_LABEL (label));
+
+ gl_template_free (&label->private->template);
+ label->private->template = gl_template_dup (template);
+
+ label->private->modified_flag = TRUE;
+
+ g_signal_emit (G_OBJECT(label), signals[MODIFIED_CHANGED], 0);
+ g_signal_emit (G_OBJECT(label), signals[CHANGED], 0);
+
+ gl_debug (DEBUG_LABEL, "END");
+}
+
+/****************************************************************************/
+/* set rotate flag. */
+/****************************************************************************/
+extern void
+gl_label_set_rotate_flag (glLabel *label,
+ gboolean rotate_flag)
+{
+ gl_debug (DEBUG_LABEL, "START");
+
+ g_return_if_fail (label && GL_IS_LABEL (label));
+
+ label->private->rotate_flag = rotate_flag;
+
+ label->private->modified_flag = TRUE;
+
+ g_signal_emit (G_OBJECT(label), signals[MODIFIED_CHANGED], 0);
+ g_signal_emit (G_OBJECT(label), signals[CHANGED], 0);
+
+ gl_debug (DEBUG_LABEL, "END");
+}
+
+/****************************************************************************/
+/* Get template. */
+/****************************************************************************/
+glTemplate *
+gl_label_get_template (glLabel * label)
+{
+ gl_debug (DEBUG_LABEL, "START");
+
+ g_return_if_fail (label && GL_IS_LABEL (label));
+
+ gl_debug (DEBUG_LABEL, "END");
+
+ return gl_template_dup (label->private->template);
+}
+
+/****************************************************************************/
+/* Get rotate flag. */
+/****************************************************************************/
+gboolean
+gl_label_get_rotate_flag (glLabel * label)
+{
+ gl_debug (DEBUG_LABEL, "START");
+
+ g_return_if_fail (label && GL_IS_LABEL (label));
+
+ gl_debug (DEBUG_LABEL, "END");
+
+ return label->private->rotate_flag;
+}
+
+/****************************************************************************/
+/* Get label size. */
+/****************************************************************************/
+void
+gl_label_get_size (glLabel * label,
+ gdouble *w,
+ gdouble *h)
+{
+ glTemplate *template;
+
+ gl_debug (DEBUG_LABEL, "START");
+
+ g_return_if_fail (label && GL_IS_LABEL (label));
+
+ template = label->private->template;
+ if ( !template ) {
+ gl_debug (DEBUG_LABEL, "END -- template NULL");
+ *w = *h = 0;
+ return;
+ }
+
+ switch (template->style) {
+
+ case GL_TEMPLATE_STYLE_RECT:
+ if (!label->private->rotate_flag) {
+ *w = template->label_width;
+ *h = template->label_height;
+ } else {
+ *w = template->label_height;
+ *h = template->label_width;
+ }
+ break;
+
+ case GL_TEMPLATE_STYLE_ROUND:
+ case GL_TEMPLATE_STYLE_CD:
+ *w = *h = 2.0 * template->label_radius;
+ break;
+
+ default:
+ g_warning ("Unknown template label style %d", template->style);
+ *w = *h = 0;
+ break;
+ }
+
+ gl_debug (DEBUG_LABEL, "END");
+}
+
+/****************************************************************************/
+/* set merge information structure. */
+/****************************************************************************/
+extern void
+gl_label_set_merge (glLabel * label,
+ glMerge * merge)
+{
+ gl_debug (DEBUG_LABEL, "START");
+
+ g_return_if_fail (label && GL_IS_LABEL (label));
+
+ gl_merge_free (&label->private->merge);
+ label->private->merge = gl_merge_dup (merge);
+
+ label->private->modified_flag = TRUE;
+
+ g_signal_emit (G_OBJECT(label), signals[MODIFIED_CHANGED], 0);
+ g_signal_emit (G_OBJECT(label), signals[CHANGED], 0);
+
+ gl_debug (DEBUG_LABEL, "END");
+}
+
+/****************************************************************************/
+/* Get merge information structure. */
+/****************************************************************************/
+glMerge *
+gl_label_get_merge (glLabel * label)
+{
+ gl_debug (DEBUG_LABEL, "START");
+
+ g_return_if_fail (label && GL_IS_LABEL (label));
+
+ gl_debug (DEBUG_LABEL, "END");
+
+ return gl_merge_dup (label->private->merge);
+}
+
+/****************************************************************************/
+/* return filename. */
+/****************************************************************************/
+gchar *
+gl_label_get_filename (glLabel * label)
+{
+ gl_debug (DEBUG_LABEL, "");
+
+ return g_strdup ( label->private->filename );
+}
+
+/****************************************************************************/
+/* return short filename. */
+/****************************************************************************/
+gchar *
+gl_label_get_short_name (glLabel * label)
+{
+ gl_debug (DEBUG_LABEL, "");
+
+ if ( label->private->filename == NULL ) {
+
+ if ( label->private->untitled_instance == 0 ) {
+ label->private->untitled_instance = ++untitled;
+ }
+
+ return g_strdup_printf ( _("%s %d"), _("Untitled"),
+ label->private->untitled_instance );
+
+ } else {
+
+ return g_path_get_basename ( label->private->filename );
+
+ }
+}
+
+/****************************************************************************/
+/* Is label modified? */
+/****************************************************************************/
+gboolean
+gl_label_is_modified (glLabel * label)
+{
+ gl_debug (DEBUG_LABEL, "return %d", label->private->modified_flag);
+ return label->private->modified_flag;
+}
+
+/****************************************************************************/
+/* Is label untitled? */
+/****************************************************************************/
+gboolean
+gl_label_is_untitled (glLabel * label)
+{
+ gl_debug (DEBUG_LABEL, "return %d",(label->private->filename == NULL));
+ return (label->private->filename == NULL);
+}
+
+/****************************************************************************/
+/* Can undo? */
+/****************************************************************************/
+gboolean
+gl_label_can_undo (glLabel * label)
+{
+ return FALSE;
+}
+
+
+/****************************************************************************/
+/* Can redo? */
+/****************************************************************************/
+gboolean
+gl_label_can_redo (glLabel * label)
+{
+ return FALSE;
+}
+
+
+/****************************************************************************/
+/* Set filename. */
+/****************************************************************************/
+void
+gl_label_set_filename (glLabel *label,
+ const gchar *filename)
+{
+ label->private->filename = g_strdup (filename);
+
+ g_signal_emit (G_OBJECT(label), signals[NAME_CHANGED], 0);
+}
+
+/****************************************************************************/
+/* Clear modified flag. */
+/****************************************************************************/
+void
+gl_label_clear_modified (glLabel *label)
+{
+
+ if ( label->private->modified_flag ) {
+
+ label->private->modified_flag = FALSE;
+
+ g_signal_emit (G_OBJECT(label), signals[MODIFIED_CHANGED], 0);
+ }
+
+}
+
+
+
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