implement view switching from world tree
[ladish.git] / gui / graph_view.c
blobc9e6dd2b241c52b1d5f534fb5bf2191731bb78a1
1 /* -*- Mode: C ; c-basic-offset: 2 -*- */
2 /*
3 * LADI Session Handler (ladish)
5 * Copyright (C) 2009 Nedko Arnaudov <nedko@arnaudov.name>
7 **************************************************************************
8 * This file contains implementation of the graph view object
9 **************************************************************************
11 * LADI Session Handler is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
16 * LADI Session Handler is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with LADI Session Handler. If not, see <http://www.gnu.org/licenses/>
23 * or write to the Free Software Foundation, Inc.,
24 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
27 #include "common.h"
28 #include "graph_view.h"
29 #include "glade.h"
30 #include "world_tree.h"
32 struct graph_view
34 struct list_head siblings;
35 char * name;
36 graph_canvas_handle graph_canvas;
37 graph_handle graph;
38 GtkWidget * canvas_widget;
41 struct list_head g_views;
43 GtkScrolledWindow * g_main_scrolledwin;
45 void view_init(void)
47 g_main_scrolledwin = GTK_SCROLLED_WINDOW(get_glade_widget("main_scrolledwin"));
48 INIT_LIST_HEAD(&g_views);
51 bool create_view(const char * name, const char * service, const char * object, bool force_activate, graph_view_handle * handle_ptr)
53 struct graph_view * view_ptr;
55 view_ptr = malloc(sizeof(struct graph_view));
56 if (view_ptr == NULL)
58 lash_error("malloc() failed for struct graph_view");
59 goto fail;
62 view_ptr->name = strdup(name);
63 if (view_ptr->name == NULL)
65 lash_error("strdup() failed for \"%s\"", name);
66 goto free_view;
69 if (!graph_create(service, object, &view_ptr->graph))
71 goto free_name;
74 if (!graph_canvas_create(1600 * 2, 1200 * 2, &view_ptr->graph_canvas))
76 goto destroy_graph;
79 if (!graph_canvas_attach(view_ptr->graph_canvas, view_ptr->graph))
81 goto destroy_graph_canvas;
84 if (!graph_activate(view_ptr->graph))
86 goto detach_graph_canvas;
89 view_ptr->canvas_widget = canvas_get_widget(graph_canvas_get_canvas(view_ptr->graph_canvas));
91 list_add_tail(&view_ptr->siblings, &g_views);
93 gtk_widget_show(view_ptr->canvas_widget);
95 world_tree_add((graph_view_handle)view_ptr, force_activate);
97 *handle_ptr = (graph_view_handle)view_ptr;
99 return true;
101 detach_graph_canvas:
102 graph_canvas_detach(view_ptr->graph_canvas);
103 destroy_graph_canvas:
104 graph_canvas_destroy(view_ptr->graph_canvas);
105 destroy_graph:
106 graph_destroy(view_ptr->graph);
107 free_name:
108 free(view_ptr->name);
109 free_view:
110 free(view_ptr);
111 fail:
112 return false;
115 static void attach_canvas(struct graph_view * view_ptr)
117 GtkWidget * child;
119 child = gtk_bin_get_child(GTK_BIN(g_main_scrolledwin));
121 if (child == view_ptr->canvas_widget)
123 return;
126 if (child != NULL)
128 gtk_container_remove(GTK_CONTAINER(g_main_scrolledwin), child);
131 gtk_container_add(GTK_CONTAINER(g_main_scrolledwin), view_ptr->canvas_widget);
133 //_canvas->scroll_to(static_cast<int>(_canvas->width()/2 - 320), static_cast<int>(_canvas->height()/2 - 240)); // FIXME: hardcoded
134 //_main_scrolledwin->property_hadjustment().get_value()->set_step_increment(10);
135 //_main_scrolledwin->property_vadjustment().get_value()->set_step_increment(10);
138 static void detach_canvas(struct graph_view * view_ptr)
140 GtkWidget * child;
142 child = gtk_bin_get_child(GTK_BIN(g_main_scrolledwin));
143 if (child == view_ptr->canvas_widget)
145 gtk_container_remove(GTK_CONTAINER(g_main_scrolledwin), view_ptr->canvas_widget);
149 static void activate_view_internal(struct graph_view * view_ptr)
151 attach_canvas(view_ptr);
154 #define view_ptr ((struct graph_view *)view)
156 void destroy_view(graph_view_handle view)
158 list_del(&view_ptr->siblings);
159 if (!list_empty(&g_views))
161 activate_view_internal(list_entry(g_views.next, struct graph_view, siblings));
164 detach_canvas(view_ptr);
166 world_tree_remove(view);
168 graph_canvas_detach(view_ptr->graph_canvas);
169 graph_canvas_destroy(view_ptr->graph_canvas);
170 graph_destroy(view_ptr->graph);
171 free(view_ptr->name);
172 free(view_ptr);
175 void activate_view(graph_view_handle view)
177 activate_view_internal(view_ptr);
180 const char * get_view_name(graph_view_handle view)
182 return view_ptr->name;