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  * Written by John Darrington
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  20  */
  21
  22 #include "gsheet-row-iface.h"
  23 #include "gsheet-uniform-row.h"
  24
  25
  26 static void  g_sheet_uniform_row_init       (GSheetUniformRow      *ug);
  27 static void  g_sheet_uniform_row_class_init (GSheetUniformRowClass *class);
  28 static void  g_sheet_uniform_row_finalize   (GObject           *object);
  29
  30 static void g_sheet_row_init (GSheetRowIface *iface);
  31
  32
  33 static GObjectClass *parent_class = NULL;
  34
  35 GType
  36 g_sheet_uniform_row_get_type (void)
  37 {
  38   static GType uniform_row_type = 0;
  39
  40   if (!uniform_row_type)
  41     {
  42       static const GTypeInfo uniform_row_info =
  43       {
  44         sizeof (GSheetUniformRowClass),
  45         NULL,           /* base_init */
  46         NULL,           /* base_finalize */
  47         (GClassInitFunc) g_sheet_uniform_row_class_init,
  48         NULL,           /* class_finalize */
  49         NULL,           /* class_data */
  50         sizeof (GSheetUniformRow),
  51         0,
  52         (GInstanceInitFunc) g_sheet_uniform_row_init,
  53       };
  54
  55       static const GInterfaceInfo row_info =
  56       {
  57         (GInterfaceInitFunc) g_sheet_row_init,
  58         NULL,
  59         NULL
  60       };
  61
  62       uniform_row_type =
  63         g_type_register_static (G_TYPE_OBJECT, "g_sheet_uniform_row",
  64                                 &uniform_row_info, 0);
  65
  66       g_type_add_interface_static (uniform_row_type,
  67                                    G_TYPE_SHEET_ROW,
  68                                    &row_info);
  69     }
  70
  71   return uniform_row_type;
  72 }
  73
  74
  75 /**
  76  * g_sheet_uniform_row_new:
  77  * @height: The size of rows in this uniform row
  78  *
  79  * Return value: a new #g_sheet_uniform_row
  80  **/
  81 GObject *
  82 g_sheet_uniform_row_new (gint height, gint n_rows)
  83 {
  84   GSheetUniformRow *ug;
  85   GObject *retval;
  86
  87   retval = g_object_new (G_TYPE_SHEET_UNIFORM_ROW, NULL);
  88
  89   ug = G_SHEET_UNIFORM_ROW(retval);
  90   ug->n_rows = n_rows;
  91   ug->height = height;
  92   ug->is_visible = TRUE;
  93
  94   return retval;
  95 }
  96
  97 static gint
  98 g_sheet_uniform_row_get_height(const GSheetRow *geom, gint u)
  99 {
 100   GSheetUniformRow *ug = G_SHEET_UNIFORM_ROW(geom);
 101
 102   return ug->height;
 103 }
 104
 105 static gboolean
 106 g_sheet_uniform_row_get_sensitivity(const GSheetRow *geom, gint u)
 107 {
 108   GSheetUniformRow *ug = G_SHEET_UNIFORM_ROW(geom);
 109
 110   return (u < ug->n_rows);
 111 }
 112
 113
 114 static gboolean
 115 g_sheet_uniform_row_get_visibility(const GSheetRow *geom, gint u)
 116 {
 117   GSheetUniformRow *ug = G_SHEET_UNIFORM_ROW(geom);
 118
 119   return ug->is_visible;
 120 }
 121
 122
 123 static const gchar *
 124 g_sheet_uniform_row_get_button_label(const GSheetRow *geom, gint u)
 125 {
 126   static gchar *label;
 127   g_free(label);
 128   label = g_strdup_printf("%d", u);
 129
 130   return label;
 131 }
 132
 133
 134
 135 static gint
 136 g_sheet_uniform_row_get_row_count(const GSheetRow *geom)
 137 {
 138   GSheetUniformRow *ug = G_SHEET_UNIFORM_ROW(geom);
 139
 140   return ug->n_rows;
 141 }
 142
 143
 144 static void
 145 g_sheet_uniform_row_class_init (GSheetUniformRowClass *class)
 146 {
 147   GObjectClass *object_class;
 148
 149   parent_class = g_type_class_peek_parent (class);
 150   object_class = (GObjectClass*) class;
 151
 152   object_class->finalize = g_sheet_uniform_row_finalize;
 153
 154 }
 155
 156
 157 static void
 158 g_sheet_uniform_row_init (GSheetUniformRow *o)
 159 {
 160 }
 161
 162 static void
 163 g_sheet_uniform_row_finalize (GObject           *object)
 164 {
 165 }
 166
 167
 168 static guint
 169 g_sheet_uniform_row_top_ypixel(GSheetRow *geo, gint row, const GtkSheet *sheet)
 170 {
 171   GSheetUniformRow *ug = G_SHEET_UNIFORM_ROW(geo);
 172
 173   return row * ug->height;
 174 }
 175
 176 static guint
 177 g_sheet_uniform_row_pixel_to_row(GSheetRow *geo,
 178                                  gint pixel, const GtkSheet *sheet)
 179 {
 180   GSheetUniformRow *ug = G_SHEET_UNIFORM_ROW(geo);
 181
 182   gint row = pixel / ug->height;
 183
 184   if (row >= g_sheet_uniform_row_get_row_count(geo))
 185     row = g_sheet_uniform_row_get_row_count(geo) -1;
 186
 187   return row;
 188 }
 189
 190
 191
 192 static void
 193 g_sheet_row_init (GSheetRowIface *iface)
 194 {
 195   iface->get_height = g_sheet_uniform_row_get_height;
 196   iface->get_sensitivity = g_sheet_uniform_row_get_sensitivity ;
 197   iface->get_visibility = g_sheet_uniform_row_get_visibility;
 198   iface->get_row_count = g_sheet_uniform_row_get_row_count;
 199   iface->get_button_label = g_sheet_uniform_row_get_button_label;
 200   iface->top_ypixel = g_sheet_uniform_row_top_ypixel;
 201   iface->pixel_to_row = g_sheet_uniform_row_pixel_to_row;
 202 }
 203