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 Library 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  * Library 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., 59 Temple Place - Suite 330,
  17  * Boston, MA  02111-1307, 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
  37
  38 #define ADG_TYPE_ENTITY             (adg_entity_get_type ())
  39 #define ADG_ENTITY(obj)             (G_TYPE_CHECK_INSTANCE_CAST ((obj), ADG_TYPE_ENTITY, AdgEntity))
  40 #define ADG_ENTITY_CLASS(klass)     (G_TYPE_CHECK_CLASS_CAST ((klass), ADG_TYPE_ENTITY, AdgEntityClass))
  41 #define ADG_IS_ENTITY(obj)          (G_TYPE_CHECK_INSTANCE_TYPE ((obj), ADG_TYPE_ENTITY))
  42 #define ADG_IS_ENTITY_CLASS(klass)  (G_TYPE_CHECK_CLASS_TYPE ((klass), ADG_TYPE_ENTITY))
  43 #define ADG_ENTITY_GET_CLASS(obj)   (G_TYPE_INSTANCE_GET_CLASS ((obj), ADG_TYPE_ENTITY, AdgEntityClass))
  44
  45
  46 typedef struct _AdgEntity        AdgEntity;
  47 typedef struct _AdgEntityClass   AdgEntityClass;
  48 typedef struct _AdgEntityPrivate AdgEntityPrivate;
  49
  50
  51 struct _AdgEntity {
  52     GInitiallyUnowned    initially_unowned;
  53
  54     /*< private >*/
  55     AdgEntityPrivate    *priv;
  56 };
  57
  58 struct _AdgEntityClass {
  59     GInitiallyUnownedClass parent_class;
  60     /* Signals */
  61     void                (*model_matrix_changed) (AdgEntity      *entity,
  62                                                  AdgMatrix      *parent_matrix);
  63     void                (*paper_matrix_changed) (AdgEntity      *entity,
  64                                                  AdgMatrix      *parent_matrix);
  65     void                (*invalidate)           (AdgEntity      *entity);
  66     void                (*render)               (AdgEntity      *entity,
  67                                                  cairo_t        *cr);
  68     /* Virtual Table */
  69     const AdgMatrix *   (*get_model_matrix)     (AdgEntity      *entity);
  70     const AdgMatrix *   (*get_paper_matrix)     (AdgEntity      *entity);
  71 };
  72
  73
  74 #define ADG_CALLBACK(f)             ((AdgCallback) (f))
  75
  76
  77 typedef void (*AdgCallback) (AdgEntity *entity, gpointer user_data);
  78
  79
  80 GType           adg_entity_get_type             (void) G_GNUC_CONST;
  81 AdgCanvas *     adg_entity_get_canvas           (AdgEntity      *entity);
  82
  83 AdgContext *    adg_entity_get_context          (AdgEntity      *entity);
  84 void            adg_entity_set_context          (AdgEntity      *entity,
  85                                                  AdgContext     *context);
  86 const AdgMatrix*adg_entity_get_model_matrix     (AdgEntity      *entity);
  87 const AdgMatrix*adg_entity_get_paper_matrix     (AdgEntity      *entity);
  88 gboolean        adg_entity_build_paper2model    (AdgEntity      *entity,
  89                                                  AdgMatrix      *matrix);
  90 gboolean        adg_entity_build_model2paper    (AdgEntity      *entity,
  91                                                  AdgMatrix      *matrix);
  92 void            adg_entity_scale_to_model       (AdgEntity      *entity,
  93                                                  cairo_t        *cr);
  94 void            adg_entity_scale_to_paper       (AdgEntity      *entity,
  95                                                  cairo_t        *cr);
  96 void            adg_entity_model_matrix_changed (AdgEntity      *entity,
  97                                                  const AdgMatrix*parent_matrix);
  98 void            adg_entity_paper_matrix_changed (AdgEntity      *entity,
  99                                                  const AdgMatrix*parent_matrix);
 100 AdgStyle *      adg_entity_get_style            (AdgEntity      *entity,
 101                                                  AdgStyleSlot    style_slot);
 102 void            adg_entity_apply                (AdgEntity      *entity,
 103                                                  AdgStyleSlot    style_slot,
 104                                                  cairo_t        *cr);
 105 gboolean        adg_entity_model_matrix_applied (AdgEntity      *entity);
 106 gboolean        adg_entity_paper_matrix_applied (AdgEntity      *entity);
 107 gboolean        adg_entity_model_applied        (AdgEntity      *entity);
 108 void            adg_entity_invalidate           (AdgEntity      *entity);
 109 void            adg_entity_render               (AdgEntity      *entity,
 110                                                  cairo_t        *cr);
 111
 112 G_END_DECLS
 113
 114
 115 #endif /* __ADG_ENTITY_H__ */