/* vim: set sw=8: -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */ /* * gog-styled-object.c : A base class for objects that have associated styles * * Copyright (C) 2003-2004 Jody Goldberg (jody@gnome.org) * * This program is free software; you can redistribute it and/or * modify it under the terms of version 2 of the GNU General Public * License as published by the Free Software Foundation. * * 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 #include #include #include #include #include #include enum { STYLED_OBJECT_PROP_0, STYLED_OBJECT_PROP_STYLE }; enum { STYLE_CHANGED, LAST_SIGNAL }; static gulong gog_styled_object_signals [LAST_SIGNAL] = { 0, }; static GObjectClass *parent_klass; void gog_styled_object_style_changed (GogStyledObject *obj) { g_signal_emit (G_OBJECT (obj), gog_styled_object_signals [STYLE_CHANGED], 0, obj->style); } static void gog_styled_object_set_property (GObject *obj, guint param_id, GValue const *value, GParamSpec *pspec) { GogStyledObject *gso = GOG_STYLED_OBJECT (obj); gboolean resize = FALSE; switch (param_id) { case STYLED_OBJECT_PROP_STYLE : resize = gog_styled_object_set_style (gso, g_value_get_object (value)); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (obj, param_id, pspec); return; /* NOTE : RETURN */ } gog_object_emit_changed (GOG_OBJECT (obj), resize); } static void gog_styled_object_get_property (GObject *obj, guint param_id, GValue *value, GParamSpec *pspec) { GogStyledObject *gso = GOG_STYLED_OBJECT (obj); switch (param_id) { case STYLED_OBJECT_PROP_STYLE : g_value_set_object (value, gso->style); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (obj, param_id, pspec); break; } } static void gog_styled_object_finalize (GObject *obj) { GogStyledObject *gso = GOG_STYLED_OBJECT (obj); if (gso->style != NULL) { g_object_unref (gso->style); gso->style = NULL; } (*parent_klass->finalize) (obj); } static gpointer styled_object_editor (GogObject *gobj, GogDataAllocator *dalloc, GnmCmdContext *cc) { return gog_styled_object_editor (GOG_STYLED_OBJECT (gobj), cc, NULL); } static void gog_styled_object_parent_changed (GogObject *obj, gboolean was_set) { GogObjectClass *gog_object_klass = GOG_OBJECT_CLASS (parent_klass); if (was_set) { GogStyledObject *gso = GOG_STYLED_OBJECT (obj); gog_theme_fillin_style (gog_object_get_theme (GOG_OBJECT (gso)), gso->style, GOG_OBJECT (gso), 0, TRUE); gog_styled_object_apply_theme (gso, gso->style); } gog_object_klass->parent_changed (obj, was_set); } static void gog_styled_object_init_style (GogStyledObject *gso, GogStyle *style) { style->interesting_fields = GOG_STYLE_OUTLINE | GOG_STYLE_FILL; /* default */ gog_theme_fillin_style (gog_object_get_theme (GOG_OBJECT (gso)), style, GOG_OBJECT (gso), 0, FALSE); } static void gog_styled_object_class_init (GogObjectClass *gog_klass) { GObjectClass *gobject_klass = (GObjectClass *) gog_klass; GogStyledObjectClass *style_klass = (GogStyledObjectClass *) gog_klass; gog_styled_object_signals [STYLE_CHANGED] = g_signal_new ("style-changed", G_TYPE_FROM_CLASS (gog_klass), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GogStyledObjectClass, style_changed), NULL, NULL, g_cclosure_marshal_VOID__OBJECT, G_TYPE_NONE, 1, G_TYPE_OBJECT); parent_klass = g_type_class_peek_parent (gog_klass); gobject_klass->set_property = gog_styled_object_set_property; gobject_klass->get_property = gog_styled_object_get_property; gobject_klass->finalize = gog_styled_object_finalize; gog_klass->editor = styled_object_editor; gog_klass->parent_changed = gog_styled_object_parent_changed; style_klass->init_style = gog_styled_object_init_style; g_object_class_install_property (gobject_klass, STYLED_OBJECT_PROP_STYLE, g_param_spec_object ("style", "style", "GogStyle *", GOG_STYLE_TYPE, G_PARAM_READWRITE|GOG_PARAM_PERSISTENT)); } static void gog_styled_object_init (GogStyledObject *gso) { gso->style = gog_style_new (); /* use the defaults */ } GSF_CLASS (GogStyledObject, gog_styled_object, gog_styled_object_class_init, gog_styled_object_init, GOG_OBJECT_TYPE) gboolean gog_styled_object_set_style (GogStyledObject *gso, GogStyle *style) { gboolean resize; g_return_val_if_fail (GOG_STYLED_OBJECT (gso) != NULL, FALSE); if (gso->style == style) return FALSE; style = gog_style_dup (style); /* which fields are we interested in for this object */ gog_styled_object_apply_theme (gso, style); gog_styled_object_style_changed (gso); resize = gog_style_is_different_size (gso->style, style); if (gso->style != NULL) g_object_unref (gso->style); gso->style = style; return resize; } /** * gog_styled_object_get_style : * @gso : #GogStyledObject * * Returns a pointer to @gso's style but does not reference it. **/ GogStyle * gog_styled_object_get_style (GogStyledObject *gso) { g_return_val_if_fail (GOG_STYLED_OBJECT (gso) != NULL, NULL); return gso->style; } /** * gog_styled_object_get_auto_style : * @gso : #GogStyledObject * * Returns a new style that is initialized with the auto values for @gso. * Caller is responsible for the result. **/ GogStyle * gog_styled_object_get_auto_style (GogStyledObject *gso) { GogStyle *res = gog_style_dup (gso->style); gog_style_force_auto (res); gog_styled_object_apply_theme (gso, res); return res; } void gog_styled_object_apply_theme (GogStyledObject *gso, GogStyle *style) { GogGraph const *graph = gog_object_get_graph (GOG_OBJECT (gso)); if (graph != NULL) { GogStyledObjectClass *klass = GOG_STYLED_OBJECT_GET_CLASS (gso); (klass->init_style) (gso, style); } }