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Diffstat (limited to 'src/ld-diagram.c')
| -rw-r--r-- | src/ld-diagram.c | 550 |
1 files changed, 0 insertions, 550 deletions
diff --git a/src/ld-diagram.c b/src/ld-diagram.c deleted file mode 100644 index 0129e2b..0000000 --- a/src/ld-diagram.c +++ /dev/null @@ -1,550 +0,0 @@ -/* - * ld-diagram.c - * - * This file is a part of logdiag. - * Copyright Přemysl Janouch 2010 - 2011. All rights reserved. - * - * See the file LICENSE for licensing information. - * - */ - -#include "liblogdiag.h" -#include "config.h" - - -/** - * SECTION:ld-diagram - * @short_description: A diagram object. - * @see_also: #LdCanvas - * - * #LdDiagram is a model used for storing diagrams. - */ - -/* - * LdDiagramPrivate: - * @modified: Whether the diagram has been modified. - * @objects: All objects in the diagram. - * @selection: All currently selected objects. - * @connections: Connections between objects. - */ -struct _LdDiagramPrivate -{ - gboolean modified; - - GList *objects; - GList *selection; - GList *connections; -}; - -enum -{ - PROP_0, - PROP_MODIFIED -}; - -static void ld_diagram_get_property (GObject *object, guint property_id, - GValue *value, GParamSpec *pspec); -static void ld_diagram_set_property (GObject *object, guint property_id, - const GValue *value, GParamSpec *pspec); -static void ld_diagram_dispose (GObject *gobject); -static void ld_diagram_finalize (GObject *gobject); - -static gboolean write_signature (GOutputStream *stream, GError **error); - -static void ld_diagram_real_changed (LdDiagram *self); -static void ld_diagram_clear_internal (LdDiagram *self); -static void ld_diagram_unselect_all_internal (LdDiagram *self); - - -G_DEFINE_TYPE (LdDiagram, ld_diagram, G_TYPE_OBJECT); - -static void -ld_diagram_class_init (LdDiagramClass *klass) -{ - GObjectClass *object_class; - GParamSpec *pspec; - - object_class = G_OBJECT_CLASS (klass); - object_class->get_property = ld_diagram_get_property; - object_class->set_property = ld_diagram_set_property; - object_class->dispose = ld_diagram_dispose; - object_class->finalize = ld_diagram_finalize; - - klass->changed = ld_diagram_real_changed; - -/** - * LdDiagram:modified: - * - * Whether the diagram has been modified. - */ - pspec = g_param_spec_boolean ("modified", "Modified", - "Whether the diagram has been modified.", - FALSE, G_PARAM_READWRITE); - g_object_class_install_property (object_class, PROP_MODIFIED, pspec); - -/** - * LdDiagram::changed: - * @diagram: The diagram object. - * - * Contents of the diagram have changed. - */ - klass->changed_signal = g_signal_new - ("changed", G_TYPE_FROM_CLASS (klass), - G_SIGNAL_RUN_LAST, - G_STRUCT_OFFSET (LdDiagramClass, changed), NULL, NULL, - g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0); - -/** - * LdDiagram::selection-changed: - * @diagram: The diagram object. - * - * The current selection has changed. - */ - klass->selection_changed_signal = g_signal_new - ("selection-changed", G_TYPE_FROM_CLASS (klass), - G_SIGNAL_RUN_LAST, - G_STRUCT_OFFSET (LdDiagramClass, selection_changed), NULL, NULL, - g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0); - - g_type_class_add_private (klass, sizeof (LdDiagramPrivate)); -} - -static void -ld_diagram_init (LdDiagram *self) -{ - self->priv = G_TYPE_INSTANCE_GET_PRIVATE - (self, LD_TYPE_DIAGRAM, LdDiagramPrivate); -} - -static void -ld_diagram_get_property (GObject *object, guint property_id, - GValue *value, GParamSpec *pspec) -{ - LdDiagram *self; - - self = LD_DIAGRAM (object); - switch (property_id) - { - case PROP_MODIFIED: - g_value_set_boolean (value, ld_diagram_get_modified (self)); - break; - default: - G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec); - } -} - -static void -ld_diagram_set_property (GObject *object, guint property_id, - const GValue *value, GParamSpec *pspec) -{ - LdDiagram *self; - - self = LD_DIAGRAM (object); - switch (property_id) - { - case PROP_MODIFIED: - ld_diagram_set_modified (self, g_value_get_boolean (value)); - break; - default: - G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec); - } -} - -static void -ld_diagram_dispose (GObject *gobject) -{ - LdDiagram *self; - - self = LD_DIAGRAM (gobject); - ld_diagram_clear_internal (self); - - /* Chain up to the parent class. */ - G_OBJECT_CLASS (ld_diagram_parent_class)->dispose (gobject); -} - -static void -ld_diagram_finalize (GObject *gobject) -{ - /* Chain up to the parent class. */ - G_OBJECT_CLASS (ld_diagram_parent_class)->finalize (gobject); -} - -static void -ld_diagram_real_changed (LdDiagram *self) -{ - g_return_if_fail (LD_IS_DIAGRAM (self)); - - ld_diagram_set_modified (self, TRUE); -} - - -/** - * ld_diagram_new: - * - * Create an instance. - */ -LdDiagram * -ld_diagram_new (void) -{ - return g_object_new (LD_TYPE_DIAGRAM, NULL); -} - -/** - * ld_diagram_clear: - * @self: An #LdDiagram object. - * - * Clear the whole diagram with it's objects and selection. - */ -void -ld_diagram_clear (LdDiagram *self) -{ - g_return_if_fail (LD_IS_DIAGRAM (self)); - - ld_diagram_clear_internal (self); - - g_signal_emit (self, - LD_DIAGRAM_GET_CLASS (self)->changed_signal, 0); -} - -/* - * ld_diagram_clear_internal: - * @self: An #LdDiagram object. - * - * Do the same as ld_diagram_clear() does but don't emit signals. - */ -static void -ld_diagram_clear_internal (LdDiagram *self) -{ - ld_diagram_unselect_all (self); - - g_list_free (self->priv->connections); - self->priv->connections = NULL; - - g_list_foreach (self->priv->objects, (GFunc) g_object_unref, NULL); - g_list_free (self->priv->objects); - self->priv->objects = NULL; -} - -/** - * ld_diagram_load_from_file: - * @self: An #LdDiagram object. - * @filename: A filename. - * @error: Return location for a GError, or NULL. - * - * Load a file into the diagram. - * - * Return value: TRUE if the file could be loaded, FALSE otherwise. - */ -gboolean -ld_diagram_load_from_file (LdDiagram *self, - const gchar *filename, GError **error) -{ - JsonParser *parser; - GError *json_error; - - g_return_val_if_fail (LD_IS_DIAGRAM (self), FALSE); - g_return_val_if_fail (filename != NULL, FALSE); - - /* TODO: Implement loading for real. This is just a stub. */ - parser = json_parser_new (); - - json_error = NULL; - json_parser_load_from_file (parser, filename, &json_error); - if (json_error) - { - g_propagate_error (error, json_error); - g_object_unref (parser); - return FALSE; - } - - ld_diagram_clear (self); - g_object_unref (parser); - return TRUE; -} - -/** - * ld_diagram_save_to_file: - * @self: An #LdDiagram object. - * @filename: A filename. - * @error: Return location for a GError, or NULL. - * - * Save the diagram into a file. - * - * Return value: TRUE if the diagram could be saved, FALSE otherwise. - */ -gboolean -ld_diagram_save_to_file (LdDiagram *self, - const gchar *filename, GError **error) -{ - GFile *file; - GFileOutputStream *file_stream; - JsonGenerator *generator; - JsonNode *root; - GError *local_error; - - g_return_val_if_fail (LD_IS_DIAGRAM (self), FALSE); - g_return_val_if_fail (filename != NULL, FALSE); - - file = g_file_new_for_path (filename); - - local_error = NULL; - file_stream = g_file_replace (file, NULL, FALSE, - G_FILE_CREATE_NONE, NULL, &local_error); - g_object_unref (file); - - if (local_error) - { - g_propagate_error (error, local_error); - return FALSE; - } - - local_error = NULL; - write_signature (G_OUTPUT_STREAM (file_stream), &local_error); - if (local_error) - { - g_object_unref (file_stream); - g_propagate_error (error, local_error); - return FALSE; - } - - /* TODO: Implement saving for real. This is just a stub. */ - generator = json_generator_new (); - g_object_set (generator, "pretty", TRUE, NULL); - - /* XXX: json-glib dislikes empty objects. */ - root = json_node_new (JSON_NODE_OBJECT); - json_generator_set_root (generator, root); - json_node_free (root); - - local_error = NULL; - json_generator_to_stream (generator, G_OUTPUT_STREAM (file_stream), - NULL, &local_error); - g_object_unref (file_stream); - g_object_unref (generator); - - if (local_error) - { - g_propagate_error (error, local_error); - return FALSE; - } - return TRUE; -} - -static gboolean -write_signature (GOutputStream *stream, GError **error) -{ - static const gchar signature[] = "/* logdiag diagram */\n"; - GError *local_error = NULL; - - g_output_stream_write (stream, signature, sizeof (signature) - 1, - NULL, &local_error); - if (local_error) - { - g_propagate_error (error, local_error); - return FALSE; - } - return TRUE; -} - -/** - * ld_diagram_get_modified: - * @self: An #LdDiagram object. - * - * Return value: The modification status of diagram. - */ -gboolean -ld_diagram_get_modified (LdDiagram *self) -{ - g_return_val_if_fail (LD_IS_DIAGRAM (self), FALSE); - return self->priv->modified; -} - -/** - * ld_diagram_set_modified: - * @self: An #LdDiagram object. - * @value: Whether the diagram has been modified. - * - * Set the modification status of diagram. - */ -void -ld_diagram_set_modified (LdDiagram *self, gboolean value) -{ - g_return_if_fail (LD_IS_DIAGRAM (self)); - self->priv->modified = value; - - g_object_notify (G_OBJECT (self), "modified"); -} - -/** - * ld_diagram_get_objects: - * @self: An #LdDiagram object. - * - * Get a list of objects in the diagram. Do not modify. - */ -GList * -ld_diagram_get_objects (LdDiagram *self) -{ - g_return_val_if_fail (LD_IS_DIAGRAM (self), NULL); - return self->priv->objects; -} - -/** - * ld_diagram_insert_object: - * @self: An #LdDiagram object. - * @object: The object to be inserted. - * @pos: The position at which the object is to be inserted. - * Negative values will append to the end. - * - * Insert an object into the diagram. - */ -void -ld_diagram_insert_object (LdDiagram *self, LdDiagramObject *object, gint pos) -{ - g_return_if_fail (LD_IS_DIAGRAM (self)); - g_return_if_fail (LD_IS_DIAGRAM_OBJECT (object)); - - if (!g_list_find (self->priv->objects, object)) - { - self->priv->objects = - g_list_insert (self->priv->objects, object, pos); - g_object_ref (object); - - g_signal_emit (self, - LD_DIAGRAM_GET_CLASS (self)->changed_signal, 0); - } -} - -/** - * ld_diagram_remove_object: - * @self: An #LdDiagram object. - * @object: The object to be removed. - * - * Remove an object from the diagram. - */ -void -ld_diagram_remove_object (LdDiagram *self, LdDiagramObject *object) -{ - g_return_if_fail (LD_IS_DIAGRAM (self)); - g_return_if_fail (LD_IS_DIAGRAM_OBJECT (object)); - - if (g_list_find (self->priv->objects, object)) - { - ld_diagram_selection_remove (self, object); - - self->priv->objects = g_list_remove (self->priv->objects, object); - g_object_unref (object); - - g_signal_emit (self, - LD_DIAGRAM_GET_CLASS (self)->changed_signal, 0); - } -} - -/** - * ld_diagram_get_selection: - * @self: An #LdDiagram object. - * - * Get a list of objects that are currently selected in the diagram. - * Do not modify. - */ -GList * -ld_diagram_get_selection (LdDiagram *self) -{ - g_return_val_if_fail (LD_IS_DIAGRAM (self), NULL); - return self->priv->selection; -} - -/** - * ld_diagram_selection_add: - * @self: An #LdDiagram object. - * @object: The object to be added to the selection. - * @pos: The position at which the object is to be inserted. - * Negative values will append to the end. - * - * Add an object to selection. - */ -void -ld_diagram_selection_add (LdDiagram *self, LdDiagramObject *object, gint pos) -{ - g_return_if_fail (LD_IS_DIAGRAM (self)); - g_return_if_fail (LD_IS_DIAGRAM_OBJECT (object)); - - g_return_if_fail (g_list_find (self->priv->objects, object) != NULL); - - if (!g_list_find (self->priv->selection, object)) - { - self->priv->selection = - g_list_insert (self->priv->selection, object, pos); - g_object_ref (object); - - g_signal_emit (self, - LD_DIAGRAM_GET_CLASS (self)->selection_changed_signal, 0); - } -} - -/** - * ld_diagram_selection_remove: - * @self: An #LdDiagram object. - * @object: The object to be removed from the selection. - * - * Remove an object from the selection. - */ -void -ld_diagram_selection_remove (LdDiagram *self, LdDiagramObject *object) -{ - g_return_if_fail (LD_IS_DIAGRAM (self)); - g_return_if_fail (LD_IS_DIAGRAM_OBJECT (object)); - - if (g_list_find (self->priv->selection, object)) - { - self->priv->selection = g_list_remove (self->priv->selection, object); - g_object_unref (object); - - g_signal_emit (self, - LD_DIAGRAM_GET_CLASS (self)->selection_changed_signal, 0); - } -} - -/** - * ld_diagram_select_all: - * @self: An #LdDiagram object. - * - * Include all objects in the document to the selection. - */ -void -ld_diagram_select_all (LdDiagram *self) -{ - g_return_if_fail (LD_IS_DIAGRAM (self)); - - ld_diagram_unselect_all_internal (self); - - self->priv->selection = g_list_copy (self->priv->objects); - g_list_foreach (self->priv->selection, (GFunc) g_object_ref, NULL); - - g_signal_emit (self, - LD_DIAGRAM_GET_CLASS (self)->selection_changed_signal, 0); -} - -/** - * ld_diagram_unselect_all: - * @self: An #LdDiagram object. - * - * Remove all objects from the current selection. - */ -void -ld_diagram_unselect_all (LdDiagram *self) -{ - g_return_if_fail (LD_IS_DIAGRAM (self)); - - ld_diagram_unselect_all_internal (self); - - g_signal_emit (self, - LD_DIAGRAM_GET_CLASS (self)->selection_changed_signal, 0); -} - -static void -ld_diagram_unselect_all_internal (LdDiagram *self) -{ - g_list_foreach (self->priv->selection, (GFunc) g_object_unref, NULL); - g_list_free (self->priv->selection); - self->priv->selection = NULL; -} |