adg/adg-entity.h

   1 /* ADG - Automatic Drawing Generation
   2  * Copyright (C) 2007-2008, Nicola Fontana <ntd at entidi.it>
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library 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 GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  17  * Boston, MA  02110-1301, USA.
  18  */
  19
  20
  21 #ifndef __ADG_ENTITY_H__
  22 #define __ADG_ENTITY_H__
  23
  24 #include <adg/adg-context.h>
  25 #include <adg/adg-matrix.h>
  26 #include <adg/adg-line-style.h>
  27 #include <adg/adg-font-style.h>
  28 #include <adg/adg-arrow-style.h>
  29 #include <adg/adg-dim-style.h>
  30
  31
  32 G_BEGIN_DECLS
  33
  34 /* Forward declarations */
  35 typedef struct _AdgCanvas       AdgCanvas;
  36 typedef struct _AdgContainer    AdgContainer;
  37
  38
  39 #define ADG_TYPE_ENTITY             (adg_entity_get_type ())
  40 #define ADG_ENTITY(obj)             (G_TYPE_CHECK_INSTANCE_CAST ((obj), ADG_TYPE_ENTITY, AdgEntity))
  41 #define ADG_ENTITY_CLASS(klass)     (G_TYPE_CHECK_CLASS_CAST ((klass), ADG_TYPE_ENTITY, AdgEntityClass))
  42 #define ADG_IS_ENTITY(obj)          (G_TYPE_CHECK_INSTANCE_TYPE ((obj), ADG_TYPE_ENTITY))
  43 #define ADG_IS_ENTITY_CLASS(klass)  (G_TYPE_CHECK_CLASS_TYPE ((klass), ADG_TYPE_ENTITY))
  44 #define ADG_ENTITY_GET_CLASS(obj)   (G_TYPE_INSTANCE_GET_CLASS ((obj), ADG_TYPE_ENTITY, AdgEntityClass))
  45
  46
  47 typedef struct _AdgEntity        AdgEntity;
  48 typedef struct _AdgEntityClass   AdgEntityClass;
  49 typedef struct _AdgEntityPrivate AdgEntityPrivate;
  50
  51
  52 struct _AdgEntity {
  53     GInitiallyUnowned    initially_unowned;
  54
  55     /*< private >*/
  56     AdgEntityPrivate    *priv;
  57 };
  58
  59 struct _AdgEntityClass {
  60     GInitiallyUnownedClass parent_class;
  61
  62     /* Signals */
  63     void                (*parent_set)           (AdgEntity      *entity,
  64                                                  AdgContainer   *old_parent);
  65     void                (*model_matrix_changed) (AdgEntity      *entity,
  66                                                  AdgMatrix      *parent_matrix);
  67     void                (*paper_matrix_changed) (AdgEntity      *entity,
  68                                                  AdgMatrix      *parent_matrix);
  69     void                (*invalidate)           (AdgEntity      *entity);
  70     void                (*render)               (AdgEntity      *entity,
  71                                                  cairo_t        *cr);
  72     /* Virtual Table */
  73     AdgContainer *      (*get_parent)           (AdgEntity      *entity);
  74     void                (*set_parent)           (AdgEntity      *entity,
  75                                                  AdgContainer   *parent);
  76     AdgContext *        (*get_context)          (AdgEntity      *entity);
  77     const AdgMatrix *   (*get_model_matrix)     (AdgEntity      *entity);
  78     const AdgMatrix *   (*get_paper_matrix)     (AdgEntity      *entity);
  79 };
  80
  81
  82 #define ADG_CALLBACK(f)             ((AdgCallback) (f))
  83
  84
  85 typedef void (*AdgCallback) (AdgEntity *entity, gpointer user_data);
  86
  87
  88 GType           adg_entity_get_type             (void) G_GNUC_CONST;
  89 AdgCanvas *     adg_entity_get_canvas           (AdgEntity      *entity);
  90
  91 AdgContainer *  adg_entity_get_parent           (AdgEntity      *entity);
  92 void            adg_entity_set_parent           (AdgEntity      *entity,
  93                                                  AdgContainer   *parent);
  94 void            adg_entity_unparent             (AdgEntity      *entity);
  95 void            adg_entity_reparent             (AdgEntity      *entity,
  96                                                  AdgContainer   *parent);
  97 AdgContext *    adg_entity_get_context          (AdgEntity      *entity);
  98 void            adg_entity_set_context          (AdgEntity      *entity,
  99                                                  AdgContext     *context);
 100 const AdgMatrix*adg_entity_get_model_matrix     (AdgEntity      *entity);
 101 const AdgMatrix*adg_entity_get_paper_matrix     (AdgEntity      *entity);
 102 gboolean        adg_entity_build_paper2model    (AdgEntity      *entity,
 103                                                  AdgMatrix      *matrix);
 104 gboolean        adg_entity_build_model2paper    (AdgEntity      *entity,
 105                                                  AdgMatrix      *matrix);
 106 void            adg_entity_scale_to_model       (AdgEntity      *entity,
 107                                                  cairo_t        *cr);
 108 void            adg_entity_scale_to_paper       (AdgEntity      *entity,
 109                                                  cairo_t        *cr);
 110 void            adg_entity_model_matrix_changed (AdgEntity      *entity,
 111                                                  const AdgMatrix*parent_matrix);
 112 void            adg_entity_paper_matrix_changed (AdgEntity      *entity,
 113                                                  const AdgMatrix*parent_matrix);
 114 AdgStyle *      adg_entity_get_style            (AdgEntity      *entity,
 115                                                  AdgStyleSlot    style_slot);
 116 void            adg_entity_apply                (AdgEntity      *entity,
 117                                                  AdgStyleSlot    style_slot,
 118                                                  cairo_t        *cr);
 119 gboolean        adg_entity_model_matrix_applied (AdgEntity      *entity);
 120 gboolean        adg_entity_paper_matrix_applied (AdgEntity      *entity);
 121 gboolean        adg_entity_model_applied        (AdgEntity      *entity);
 122 void            adg_entity_invalidate           (AdgEntity      *entity);
 123 void            adg_entity_render               (AdgEntity      *entity,
 124                                                  cairo_t        *cr);
 125
 126 G_END_DECLS
 127
 128
 129 #endif /* __ADG_ENTITY_H__ */