lib/gtksheet/gsheet-uniform-row.c

   1 /* gsheet-uniform-row.c
   2  *
   3  *  PSPPIRE --- A Graphical User Interface for PSPP
   4  * Copyright (C) 2006  Free Software Foundation
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  19  */
  20
  21 #include "gsheet-row-iface.h"
  22 #include "gsheet-uniform-row.h"
  23
  24
  25 static void  g_sheet_uniform_row_init       (GSheetUniformRow      *ug);
  26 static void  g_sheet_uniform_row_class_init (GSheetUniformRowClass *class);
  27 static void  g_sheet_uniform_row_finalize   (GObject           *object);
  28
  29 static void g_sheet_row_init (GSheetRowIface *iface);
  30
  31
  32 static GObjectClass *parent_class = NULL;
  33
  34 GType
  35 g_sheet_uniform_row_get_type (void)
  36 {
  37   static GType uniform_row_type = 0;
  38
  39   if (!uniform_row_type)
  40     {
  41       static const GTypeInfo uniform_row_info =
  42       {
  43         sizeof (GSheetUniformRowClass),
  44         NULL,           /* base_init */
  45         NULL,           /* base_finalize */
  46         (GClassInitFunc) g_sheet_uniform_row_class_init,
  47         NULL,           /* class_finalize */
  48         NULL,           /* class_data */
  49         sizeof (GSheetUniformRow),
  50         0,
  51         (GInstanceInitFunc) g_sheet_uniform_row_init,
  52       };
  53
  54       static const GInterfaceInfo row_info =
  55       {
  56         (GInterfaceInitFunc) g_sheet_row_init,
  57         NULL,
  58         NULL
  59       };
  60
  61       uniform_row_type =
  62         g_type_register_static (G_TYPE_OBJECT, "g_sheet_uniform_row",
  63                                 &uniform_row_info, 0);
  64
  65       g_type_add_interface_static (uniform_row_type,
  66                                    G_TYPE_SHEET_ROW,
  67                                    &row_info);
  68     }
  69
  70   return uniform_row_type;
  71 }
  72
  73
  74 /**
  75  * g_sheet_uniform_row_new:
  76  * @height: The size of rows in this uniform row
  77  *
  78  * Return value: a new #g_sheet_uniform_row
  79  **/
  80 GObject *
  81 g_sheet_uniform_row_new (gint height, gint n_rows)
  82 {
  83   GSheetUniformRow *ug;
  84   GObject *retval;
  85
  86   retval = g_object_new (G_TYPE_SHEET_UNIFORM_ROW, NULL);
  87
  88   ug = G_SHEET_UNIFORM_ROW(retval);
  89   ug->n_rows = n_rows;
  90   ug->height = height;
  91   ug->is_visible = TRUE;
  92
  93   return retval;
  94 }
  95
  96 static gint
  97 g_sheet_uniform_row_get_height(const GSheetRow *geom, gint u, gpointer data)
  98 {
  99   GSheetUniformRow *ug = G_SHEET_UNIFORM_ROW(geom);
 100
 101   return ug->height;
 102 }
 103
 104 static gboolean
 105 g_sheet_uniform_row_get_sensitivity(const GSheetRow *geom, gint u, gpointer data)
 106 {
 107   GSheetUniformRow *ug = G_SHEET_UNIFORM_ROW(geom);
 108
 109   return (u < ug->n_rows);
 110 }
 111
 112
 113 static gboolean
 114 g_sheet_uniform_row_get_visibility(const GSheetRow *geom, gint u, gpointer data)
 115 {
 116   GSheetUniformRow *ug = G_SHEET_UNIFORM_ROW(geom);
 117
 118   return ug->is_visible;
 119 }
 120
 121
 122 static gchar *
 123 g_sheet_uniform_row_get_button_label(const GSheetRow *geom, gint u, gpointer data)
 124 {
 125   gchar *label = g_strdup_printf("%d", u);
 126
 127   return label;
 128 }
 129
 130
 131
 132 static gint
 133 g_sheet_uniform_row_get_row_count(const GSheetRow *geom, gpointer data)
 134 {
 135   GSheetUniformRow *ug = G_SHEET_UNIFORM_ROW(geom);
 136
 137   return ug->n_rows;
 138 }
 139
 140
 141 static void
 142 g_sheet_uniform_row_class_init (GSheetUniformRowClass *class)
 143 {
 144   GObjectClass *object_class;
 145
 146   parent_class = g_type_class_peek_parent (class);
 147   object_class = (GObjectClass*) class;
 148
 149   object_class->finalize = g_sheet_uniform_row_finalize;
 150
 151 }
 152
 153
 154 static void
 155 g_sheet_uniform_row_init (GSheetUniformRow *o)
 156 {
 157 }
 158
 159 static void
 160 g_sheet_uniform_row_finalize (GObject           *object)
 161 {
 162 }
 163
 164
 165 static guint
 166 g_sheet_uniform_row_top_ypixel(const GSheetRow *geo, gint row, gpointer data)
 167 {
 168   GSheetUniformRow *ug = G_SHEET_UNIFORM_ROW(geo);
 169
 170   return row * ug->height;
 171 }
 172
 173 static gint
 174 g_sheet_uniform_row_pixel_to_row(const GSheetRow *geo, guint pixel,
 175                                  gpointer data)
 176 {
 177   GSheetUniformRow *ug = G_SHEET_UNIFORM_ROW(geo);
 178
 179   gint row = pixel / ug->height;
 180
 181   if (row >= g_sheet_uniform_row_get_row_count(geo, data))
 182     row = g_sheet_uniform_row_get_row_count(geo, data) -1;
 183
 184   return row;
 185 }
 186
 187
 188
 189 static void
 190 g_sheet_row_init (GSheetRowIface *iface)
 191 {
 192   iface->get_height = g_sheet_uniform_row_get_height;
 193   iface->get_sensitivity = g_sheet_uniform_row_get_sensitivity ;
 194   iface->get_visibility = g_sheet_uniform_row_get_visibility;
 195   iface->get_row_count = g_sheet_uniform_row_get_row_count;
 196   iface->get_button_label = g_sheet_uniform_row_get_button_label;
 197   iface->top_ypixel = g_sheet_uniform_row_top_ypixel;
 198   iface->pixel_to_row = g_sheet_uniform_row_pixel_to_row;
 199 }
 200