adg/adg-adim.c

   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 /**
  22  * SECTION:adim
  23  * @title: AdgADim
  24  * @short_description: Angular dimensions
  25  *
  26  * The #AdgADim entity represents an angular dimension.
  27  */
  28
  29 #include "adg-adim.h"
  30 #include "adg-adim-private.h"
  31 #include "adg-container.h"
  32 #include "adg-util.h"
  33 #include "adg-intl.h"
  34
  35 #include <gcontainer/gcontainer.h>
  36
  37 #define PARENT_CLASS ((AdgDimClass *) adg_adim_parent_class)
  38
  39
  40 enum
  41 {
  42   PROP_0,
  43   PROP_DIRECTION
  44 };
  45
  46
  47 static void             finalize                (GObject        *object);
  48 static void             model_matrix_changed    (AdgEntity      *entity,
  49                                                  AdgMatrix      *parent_matrix);
  50 static void             render                  (AdgEntity      *entity,
  51                                                  cairo_t        *cr);
  52 static gchar *          default_quote           (AdgDim         *dim);
  53
  54
  55 G_DEFINE_TYPE (AdgADim, adg_adim, ADG_TYPE_DIM);
  56
  57
  58 static void
  59 adg_adim_class_init (AdgADimClass *klass)
  60 {
  61   GObjectClass   *gobject_class;
  62   AdgEntityClass *entity_class;
  63   AdgDimClass    *dim_class;
  64   GParamSpec     *param;
  65
  66   gobject_class = (GObjectClass *) klass;
  67   entity_class = (AdgEntityClass *) klass;
  68   dim_class = (AdgDimClass *) klass;
  69
  70   g_type_class_add_private (klass, sizeof (AdgADimPrivate));
  71
  72   gobject_class->finalize = finalize;
  73
  74   entity_class->model_matrix_changed = model_matrix_changed;
  75
  76   dim_class->default_quote = default_quote;
  77
  78   param = g_param_spec_double ("direction",
  79                                P_("Direction"),
  80                                P_("The inclination angle of the extension lines"),
  81                                -G_MAXDOUBLE, G_MAXDOUBLE, CPML_DIR_RIGHT,
  82                                G_PARAM_READWRITE|G_PARAM_CONSTRUCT);
  83   g_object_class_install_property (gobject_class, PROP_DIRECTION, param);
  84 }
  85
  86 static void
  87 adg_adim_init (AdgADim *adim)
  88 {
  89   AdgADimPrivate *priv = G_TYPE_INSTANCE_GET_PRIVATE (adim, ADG_TYPE_ADIM,
  90                                                       AdgADimPrivate);
  91
  92   priv->extension1.status = CAIRO_STATUS_SUCCESS;
  93   priv->extension1.data = NULL;
  94   priv->extension1.num_data = 4;
  95
  96   priv->extension2.status = CAIRO_STATUS_SUCCESS;
  97   priv->extension2.data = NULL;
  98   priv->extension2.num_data = 4;
  99
 100   priv->arrow_path.status = CAIRO_STATUS_SUCCESS;
 101   priv->arrow_path.data = NULL;
 102   priv->arrow_path.num_data = 4;
 103
 104   priv->baseline.status = CAIRO_STATUS_SUCCESS;
 105   priv->baseline.data = NULL;
 106   priv->baseline.num_data = 4;
 107
 108   adim->priv = priv;
 109 }
 110
 111 static void
 112 finalize (GObject *object)
 113 {
 114   AdgADimPrivate *priv = ((AdgADim *) object)->priv;
 115
 116   g_free (priv->extension1.data);
 117   g_free (priv->extension2.data);
 118   g_free (priv->arrow_path.data);
 119   g_free (priv->baseline.data);
 120 }
 121
 122 static void
 123 model_matrix_changed (AdgEntity *entity,
 124                       AdgMatrix *parent_matrix)
 125 {
 126   ((AdgEntityClass *) PARENT_CLASS)->model_matrix_changed (entity, parent_matrix);
 127
 128   /* TODO */
 129 }
 130
 131 static void
 132 render (AdgEntity *entity,
 133         cairo_t   *cr)
 134 {
 135   /* TODO */
 136 }
 137
 138 static gchar *
 139 default_quote (AdgDim *dim)
 140 {
 141   /* TODO */
 142   return g_strdup ("TODO");
 143 }
 144
 145
 146
 147 /**
 148  * adg_adim_new:
 149  *
 150  * Creates a new - unreferenced - angular dimension. You must, at least, define
 151  * the reference points with adg_dim_set_ref() and the position reference using
 152  * adg_dim_set_pos().
 153  *
 154  * Return value: the new entity
 155  */
 156 AdgEntity *
 157 adg_adim_new (void)
 158 {
 159   return (AdgEntity *) g_object_new (ADG_TYPE_ADIM, NULL);
 160 }