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 <config.h>
  22
  23 #include "gsheet-row-iface.h"
  24 #include "gsheet-uniform-row.h"
  25
  26
  27 static void  g_sheet_uniform_row_init       (GSheetUniformRow      *ug);
  28 static void  g_sheet_uniform_row_class_init (GSheetUniformRowClass *class);
  29 static void  g_sheet_uniform_row_finalize   (GObject           *object);
  30
  31 static void g_sheet_row_init (GSheetRowIface *iface);
  32
  33
  34 static GObjectClass *parent_class = NULL;
  35
  36 GType
  37 g_sheet_uniform_row_get_type (void)
  38 {
  39   static GType uniform_row_type = 0;
  40
  41   if (!uniform_row_type)
  42     {
  43       static const GTypeInfo uniform_row_info =
  44       {
  45         sizeof (GSheetUniformRowClass),
  46         NULL,           /* base_init */
  47         NULL,           /* base_finalize */
  48         (GClassInitFunc) g_sheet_uniform_row_class_init,
  49         NULL,           /* class_finalize */
  50         NULL,           /* class_data */
  51         sizeof (GSheetUniformRow),
  52         0,
  53         (GInstanceInitFunc) g_sheet_uniform_row_init,
  54       };
  55
  56       static const GInterfaceInfo row_info =
  57       {
  58         (GInterfaceInitFunc) g_sheet_row_init,
  59         NULL,
  60         NULL
  61       };
  62
  63       uniform_row_type =
  64         g_type_register_static (G_TYPE_OBJECT, "g_sheet_uniform_row",
  65                                 &uniform_row_info, 0);
  66
  67       g_type_add_interface_static (uniform_row_type,
  68                                    G_TYPE_SHEET_ROW,
  69                                    &row_info);
  70     }
  71
  72   return uniform_row_type;
  73 }
  74
  75
  76 /**
  77  * g_sheet_uniform_row_new:
  78  * @height: The size of rows in this uniform row
  79  *
  80  * Return value: a new #g_sheet_uniform_row
  81  **/
  82 GObject *
  83 g_sheet_uniform_row_new (gint height, gint n_rows)
  84 {
  85   GSheetUniformRow *ug;
  86   GObject *retval;
  87
  88   retval = g_object_new (G_TYPE_SHEET_UNIFORM_ROW, NULL);
  89
  90   ug = G_SHEET_UNIFORM_ROW(retval);
  91   ug->n_rows = n_rows;
  92   ug->height = height;
  93   ug->is_visible = TRUE;
  94
  95   return retval;
  96 }
  97
  98 static gint
  99 g_sheet_uniform_row_get_height (const GSheetRow *geom, glong u, gpointer data)
 100 {
 101   GSheetUniformRow *ug = G_SHEET_UNIFORM_ROW(geom);
 102
 103   return ug->height;
 104 }
 105
 106 static gboolean
 107 g_sheet_uniform_row_get_sensitivity (const GSheetRow *geom, glong u,
 108                                      gpointer data)
 109 {
 110   GSheetUniformRow *ug = G_SHEET_UNIFORM_ROW(geom);
 111
 112   return (u < ug->n_rows);
 113 }
 114
 115
 116 static gboolean
 117 g_sheet_uniform_row_get_visibility (const GSheetRow *geom, glong u,
 118                                     gpointer data)
 119 {
 120   GSheetUniformRow *ug = G_SHEET_UNIFORM_ROW (geom);
 121
 122   return ug->is_visible;
 123 }
 124
 125
 126 static gchar *
 127 g_sheet_uniform_row_get_button_label(const GSheetRow *geom, glong u, gpointer data)
 128 {
 129   gchar *label = g_strdup_printf("%ld", u);
 130
 131   return label;
 132 }
 133
 134
 135
 136 static glong
 137 g_sheet_uniform_row_get_row_count (const GSheetRow *geom, gpointer data)
 138 {
 139   GSheetUniformRow *ug = G_SHEET_UNIFORM_ROW(geom);
 140
 141   return ug->n_rows;
 142 }
 143
 144
 145 static void
 146 g_sheet_uniform_row_class_init (GSheetUniformRowClass *class)
 147 {
 148   GObjectClass *object_class;
 149
 150   parent_class = g_type_class_peek_parent (class);
 151   object_class = (GObjectClass*) class;
 152
 153   object_class->finalize = g_sheet_uniform_row_finalize;
 154
 155 }
 156
 157
 158 static void
 159 g_sheet_uniform_row_init (GSheetUniformRow *o)
 160 {
 161 }
 162
 163 static void
 164 g_sheet_uniform_row_finalize (GObject *object)
 165 {
 166 }
 167
 168
 169 static guint
 170 g_sheet_uniform_row_top_ypixel (const GSheetRow *geo, glong row, gpointer data)
 171 {
 172   GSheetUniformRow *ug = G_SHEET_UNIFORM_ROW(geo);
 173
 174   return row * ug->height;
 175 }
 176
 177 static glong
 178 g_sheet_uniform_row_pixel_to_row (const GSheetRow *geo, guint pixel,
 179                                  gpointer data)
 180 {
 181   GSheetUniformRow *ug = G_SHEET_UNIFORM_ROW(geo);
 182
 183   gint row = pixel / ug->height;
 184
 185   if (row >= g_sheet_uniform_row_get_row_count(geo, data))
 186     row = g_sheet_uniform_row_get_row_count(geo, data) -1;
 187
 188   return row;
 189 }
 190
 191
 192
 193 static void
 194 g_sheet_row_init (GSheetRowIface *iface)
 195 {
 196   iface->get_height = g_sheet_uniform_row_get_height;
 197   iface->get_sensitivity = g_sheet_uniform_row_get_sensitivity ;
 198   iface->get_visibility = g_sheet_uniform_row_get_visibility;
 199   iface->get_row_count = g_sheet_uniform_row_get_row_count;
 200   iface->get_button_label = g_sheet_uniform_row_get_button_label;
 201   iface->top_ypixel = g_sheet_uniform_row_top_ypixel;
 202   iface->pixel_to_row = g_sheet_uniform_row_pixel_to_row;
 203 }
 204