app/diagram.h

   1 /* Dia -- an diagram creation/manipulation program -*- c -*-
   2  * Copyright (C) 1998 Alexander Larsson
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  17  */
  18 #ifndef DIAGRAM_H
  19 #define DIAGRAM_H
  20
  21 #include <gtk/gtk.h>
  22
  23 typedef struct _Diagram Diagram;
  24
  25 #include "geometry.h"
  26 #include "handle.h"
  27 #include "connectionpoint.h"
  28 #include "display.h"
  29 #include "diagramdata.h"
  30 #include "undo.h"
  31 #include "filter.h"
  32 #include "menus.h"
  33 #include "diagrid.h"
  34
  35 GType diagram_get_type (void) G_GNUC_CONST;
  36
  37 #define DIA_TYPE_DIAGRAM           (diagram_get_type ())
  38 #define DIA_DIAGRAM(obj)           (G_TYPE_CHECK_INSTANCE_CAST ((obj), DIA_TYPE_DIAGRAM, Diagram))
  39 #define DIA_DIAGRAM_CLASS(klass)   (G_TYPE_CHECK_CLASS_CAST ((klass), DIA_TYPE_DIAGRAM, DiagramClass))
  40 #define DIA_IS_DIAGRAM(obj)        (G_TYPE_CHECK_INSTANCE_TYPE ((obj), DIA_TYPE_DIAGRAM))
  41 #define DIA_DIAGRAM_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), DIA_TYPE_DIAGRAM, DiagramClass))
  42
  43 struct _Diagram {
  44   DiagramData parent_instance;
  45
  46   char *filename;
  47   int unsaved;            /* True if diagram is created but not saved.*/
  48   int mollified;
  49   gboolean autosaved;     /* True if the diagram is autosaved since last mod */
  50   char *autosavefilename;     /* Holds the name of the current autosave file
  51                                * for this diagram, or NULL.  */
  52
  53   Color pagebreak_color; /*!< just to show page breaks */
  54   DiaGrid     grid;      /*!< the display grid */
  55
  56   /*! almost completely unused guides (load and save code is there) */
  57   struct {
  58     /* sorted arrays of the guides for the diagram */
  59     real *hguides, *vguides;
  60     guint nhguides, nvguides;
  61   } guides;
  62
  63   DiagramData *data;     /*! just for compatibility, now that the Diagram _is_ and not _has_ DiagramData */
  64
  65   guint display_count;
  66   GSList *displays;       /* List of all displays showing this diagram */
  67
  68   UndoStack *undo;
  69 };
  70
  71 typedef struct _DiagramClass {
  72   GObjectClass parent_class;
  73
  74   /* signals */
  75   void (* removed)           (Diagram*);
  76   void (* selection_changed) (Diagram*, int);
  77
  78 } DiagramClass;
  79
  80 GList *dia_open_diagrams(void); /* Read only! */
  81
  82 Diagram *diagram_load(const char *filename, DiaImportFilter *ifilter);
  83 int diagram_load_into (Diagram *dest, const char *filename, DiaImportFilter *ifilter);
  84 Diagram *new_diagram(const char *filename); /*Note: filename is copied*/
  85 /** Perform updates related to getting a new current diagram */
  86 void diagram_set_current(Diagram *diagram);
  87 void diagram_destroy(Diagram *dia);
  88 gboolean diagram_is_modified(Diagram *dia);
  89 void diagram_modified(Diagram *dia);
  90 void diagram_set_modified(Diagram *dia, int modified);
  91 void diagram_add_ddisplay(Diagram *dia, DDisplay *ddisp);
  92 void diagram_remove_ddisplay(Diagram *dia, DDisplay *ddisp);
  93 void diagram_add_object(Diagram *dia, DiaObject *obj);
  94 void diagram_add_object_list(Diagram *dia, GList *list);
  95 void diagram_selected_break_external(Diagram *dia);
  96 void diagram_remove_all_selected(Diagram *diagram, int delete_empty);
  97 void diagram_unselect_object(Diagram *diagram, DiaObject *obj);
  98 void diagram_unselect_objects(Diagram *dia, GList *obj_list);
  99 void diagram_select(Diagram *diagram, DiaObject *obj);
 100 void diagram_select_list(Diagram *diagram, GList *list);
 101 int diagram_is_selected(Diagram *diagram, DiaObject *obj);
 102 GList *diagram_get_sorted_selected(Diagram *dia);
 103 /* Removes selected from objects list, NOT selected list: */
 104 GList *diagram_get_sorted_selected_remove(Diagram *dia);
 105 void diagram_add_update(Diagram *dia, Rectangle *update);
 106 void diagram_add_update_with_border(Diagram *dia, Rectangle *update,
 107                                     int pixel_border);
 108 void diagram_add_update_all(Diagram *dia);
 109 void diagram_add_update_all_all_and_flush();
 110 void diagram_add_update_pixels(Diagram *dia, Point *point,
 111                                int pixel_width, int pixel_height);
 112 void diagram_flush(Diagram *dia);
 113 DiaObject *diagram_find_clicked_object(Diagram *dia,
 114                                     Point *pos,
 115                                     real maxdist);
 116 DiaObject *diagram_find_clicked_object_except(Diagram *dia,
 117                                            Point *pos,
 118                                            real maxdist,
 119                                            GList *avoid);
 120 real diagram_find_closest_handle(Diagram *dia, Handle **handle,
 121                                  DiaObject **obj, Point *pos);
 122 real diagram_find_closest_connectionpoint(Diagram *dia,
 123                                           ConnectionPoint **cp,
 124                                           Point *pos,
 125                                           DiaObject *notthis);
 126 void diagram_update_extents(Diagram *dia);
 127
 128 void diagram_update_menu_sensitivity (Diagram *dia, UpdatableMenuItems *items);
 129 void diagram_update_menubar_sensitivity(Diagram *dia, UpdatableMenuItems *items);
 130 void diagram_update_popupmenu_sensitivity(Diagram *dia);
 131
 132 void diagram_place_under_selected(Diagram *dia);
 133 void diagram_place_over_selected(Diagram *dia);
 134 void diagram_place_down_selected(Diagram *dia);
 135 void diagram_place_up_selected(Diagram *dia);
 136 void diagram_group_selected(Diagram *dia);
 137 void diagram_ungroup_selected(Diagram *dia);
 138 void diagram_parent_selected(Diagram *dia);
 139 void diagram_unparent_selected(Diagram *dia);
 140 void diagram_unparent_children_selected(Diagram *dia);
 141
 142 void diagram_set_filename(Diagram *dia, const char *filename);
 143 gchar *diagram_get_name(Diagram *dia);
 144
 145 int diagram_modified_exists(void);
 146
 147 void diagram_redraw_all(void);
 148
 149 void diagram_object_modified(Diagram *dia, DiaObject *object);
 150
 151 #endif /* DIAGRAM_H */
 152
 153