1 /* 2 * Copyright (C) 2009 - 2011 Vivien Malerba <malerba@gnome-db.org> 3 * 4 * This program is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU General Public License 6 * as published by the Free Software Foundation; either version 2 7 * of the License, or (at your option) any later version. 8 * 9 * This program is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 * GNU General Public License for more details. 13 * 14 * You should have received a copy of the GNU General Public License 15 * along with this program; if not, write to the Free Software 16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 17 */ 18 19 #ifndef __BROWSER_CANVAS__ 20 #define __BROWSER_CANVAS__ 21 22 #include <gtk/gtk.h> 23 #include <libgda/libgda.h> 24 #include "browser-canvas-decl.h" 25 26 G_BEGIN_DECLS 27 28 #define TYPE_BROWSER_CANVAS (browser_canvas_get_type()) 29 #define BROWSER_CANVAS(obj) G_TYPE_CHECK_INSTANCE_CAST (obj, browser_canvas_get_type(), BrowserCanvas) 30 #define BROWSER_CANVAS_CLASS(klass) G_TYPE_CHECK_CLASS_CAST (klass, browser_canvas_get_type (), BrowserCanvasClass) 31 #define IS_BROWSER_CANVAS(obj) G_TYPE_CHECK_INSTANCE_TYPE (obj, browser_canvas_get_type ()) 32 33 typedef enum { 34 BROWSER_CANVAS_LAYOUT_DEFAULT, 35 BROWSER_CANVAS_LAYOUT_RADIAL 36 } BrowserCanvasLayoutAlgorithm; 37 38 /* struct for the object's data */ 39 struct _BrowserCanvas 40 { 41 GtkScrolledWindow widget; 42 43 /* pointer position when a context menu was last opened, or while moving around the canvas */ 44 gdouble xmouse; 45 gdouble ymouse; 46 47 /* private */ 48 BrowserCanvasPrivate *priv; 49 }; 50 51 /* struct for the object's class */ 52 struct _BrowserCanvasClass 53 { 54 GtkScrolledWindowClass parent_class; 55 56 /* signals */ 57 void (*item_selected) (BrowserCanvas *canvas, BrowserCanvasItem *item); 58 59 /* virtual functions */ 60 void (*clean_canvas_items) (BrowserCanvas *canvas); /* clean any extra structure, not the individual items */ 61 GSList *(*get_layout_items) (BrowserCanvas *canvas); 62 63 GtkWidget *(*build_context_menu) (BrowserCanvas *canvas); 64 }; 65 66 /* generic widget's functions */ 67 GType browser_canvas_get_type (void) G_GNUC_CONST; 68 void browser_canvas_declare_item (BrowserCanvas *canvas, BrowserCanvasItem *item); 69 70 void browser_canvas_set_zoom_factor (BrowserCanvas *canvas, gdouble n); 71 gdouble browser_canvas_get_zoom_factor (BrowserCanvas *canvas); 72 gdouble browser_canvas_fit_zoom_factor (BrowserCanvas *canvas); 73 gboolean browser_canvas_auto_layout_enabled (BrowserCanvas *canvas); 74 void browser_canvas_perform_auto_layout (BrowserCanvas *canvas, gboolean animate, 75 BrowserCanvasLayoutAlgorithm algorithm); 76 void browser_canvas_center (BrowserCanvas *canvas); 77 void browser_canvas_scale_layout (BrowserCanvas *canvas, gdouble scale); 78 79 gchar *browser_canvas_serialize_items (BrowserCanvas *canvas); 80 81 void browser_canvas_item_toggle_select (BrowserCanvas *canvas, BrowserCanvasItem *item); 82 void browser_canvas_translate_item (BrowserCanvas *canvas, BrowserCanvasItem *item, 83 gdouble dx, gdouble dy); 84 85 G_END_DECLS 86 87 #endif 88