irreco/src/core/irreco_listbox_text.c

   1 /*
   2  * irreco - Ir Remote Control
   3  * Copyright (C) 2007  Arto Karppinen (arto.karppinen@iki.fi)
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License
   7  * as published by the Free Software Foundation; either version 2
   8  * of the License, or (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  18  */
  19
  20 #include "irreco_listbox_text.h"
  21
  22 /**
  23  * @addtogroup IrrecoListboxText
  24  * @ingroup Irreco
  25  *
  26  * A single column, scrollable listbox with text cels.
  27  *
  28  * @{
  29  */
  30
  31 /**
  32  * @file
  33  * Source file of @ref IrrecoListboxText.
  34  */
  35
  36 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-*/
  37 /* Prototypes.                                                                */
  38 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-*/
  39
  40 static void irreco_listbox_text_tree_size_request(GtkWidget *widget,
  41                                                    GtkRequisition *requisition,
  42                                                    IrrecoListboxText *self);
  43
  44 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-*/
  45 /* Datatypes                                                                  */
  46 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-*/
  47
  48 enum
  49 {
  50         DATA_COL,
  51         TEXT_COL,
  52         N_COLUMNS
  53 };
  54
  55
  56
  57 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-*/
  58 /* Construction & Destruction                                                 */
  59 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-*/
  60
  61 /**
  62  * @name Construction & Destruction
  63  * @{
  64  */
  65
  66 G_DEFINE_TYPE(IrrecoListboxText, irreco_listbox_text, IRRECO_TYPE_LISTBOX)
  67
  68 static void irreco_listbox_text_class_init(IrrecoListboxTextClass *klass)
  69 {
  70 }
  71
  72 static void irreco_listbox_text_init(IrrecoListboxText *self)
  73 {
  74         IrrecoListbox *parent;
  75         GtkTreeViewColumn *column;
  76         GtkCellRenderer *renderer;
  77         GtkTable *table;
  78         IRRECO_ENTER
  79
  80         parent = IRRECO_LISTBOX(self);
  81         parent->text_col_id = TEXT_COL;
  82         parent->data_col_id = DATA_COL;
  83
  84         /* Create GtkTreeStore and GtkTreeView */
  85         parent->list_store = gtk_list_store_new(
  86                 N_COLUMNS, G_TYPE_POINTER, G_TYPE_STRING);
  87         parent->tree_view = gtk_tree_view_new_with_model(
  88                 GTK_TREE_MODEL(parent->list_store));
  89         g_object_unref(G_OBJECT(parent->list_store));
  90
  91         /* Setup column. */
  92         renderer = gtk_cell_renderer_text_new();
  93         column = gtk_tree_view_column_new_with_attributes(
  94                 NULL, renderer, "text", TEXT_COL, NULL);
  95         gtk_tree_view_append_column(GTK_TREE_VIEW(parent->tree_view),
  96                                     column);
  97
  98         /* Set selection callback. */
  99         parent->tree_selection = gtk_tree_view_get_selection(
 100                 GTK_TREE_VIEW(parent->tree_view));
 101         gtk_tree_selection_set_mode(parent->tree_selection,
 102                                     GTK_SELECTION_SINGLE);
 103
 104         /* Add Widgets to GtkTable. */
 105         table = GTK_TABLE(gtk_table_new(2, 2, FALSE));
 106
 107         gtk_table_attach_defaults(table, parent->tree_view, 0 ,1, 0, 1);
 108
 109         parent->vscrollbar = gtk_vscrollbar_new(gtk_tree_view_get_vadjustment(
 110                                         GTK_TREE_VIEW(parent->tree_view)));
 111         gtk_table_attach(table, parent->vscrollbar, 1 ,2, 0, 1,
 112                                         GTK_SHRINK, GTK_FILL, 0, 0);
 113
 114         parent->hscrollbar = gtk_hscrollbar_new(gtk_tree_view_get_hadjustment(
 115                                         GTK_TREE_VIEW(parent->tree_view)));
 116         gtk_table_attach(table, parent->hscrollbar, 0 ,1, 1, 2,
 117                                         GTK_FILL, GTK_SHRINK, 0, 0);
 118
 119         gtk_box_pack_start(GTK_BOX(self), GTK_WIDGET(table), TRUE, TRUE, 0);
 120
 121         /* Connect signals. */
 122         g_signal_connect(G_OBJECT(IRRECO_LISTBOX(self)->tree_view),
 123                          "size-request",
 124                          G_CALLBACK(irreco_listbox_text_tree_size_request),
 125                          self);
 126
 127         IRRECO_RETURN
 128 }
 129
 130 GtkWidget *irreco_listbox_text_new()
 131 {
 132         IrrecoListboxText *self;
 133         IRRECO_ENTER
 134
 135         self = IRRECO_LISTBOX_TEXT(g_object_new(IRRECO_TYPE_LISTBOX_TEXT, NULL));
 136         IRRECO_RETURN_PTR(GTK_WIDGET(self));
 137 }
 138
 139 /**
 140  * Create widgets and initialize IrrecoListboxText structure.
 141  *
 142  * The is no need to call destructor for IrrecoListboxText as long as you attach
 143  * the returned GtkWidget to somewhere in the GTK widget tree. Gtk will then
 144  * handle the destruction of the widgets when they are no longer needed. This
 145  * will work fine as long as IrrecoListboxText structure is still around when the
 146  * widget is destroyed.
 147  *
 148  * @param min_width
 149  *      Minimum width Requisition for the widget.
 150  * @param min_height
 151  *      Minimum height Requisition for the widget.
 152  */
 153 GtkWidget *irreco_listbox_text_new_with_autosize(gint min_width,
 154                                                  gint max_width,
 155                                                  gint min_height,
 156                                                  gint max_height)
 157 {
 158         IrrecoListboxText *self;
 159         IRRECO_ENTER
 160
 161         self = IRRECO_LISTBOX_TEXT(g_object_new(IRRECO_TYPE_LISTBOX_TEXT, NULL));
 162         irreco_listbox_set_autosize(IRRECO_LISTBOX(self), min_width, max_width,
 163                                     min_height, max_height);
 164         IRRECO_RETURN_PTR(GTK_WIDGET(self));
 165 }
 166
 167 /** @} */
 168
 169
 170
 171 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-*/
 172 /* Public Functions                                                           */
 173 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-*/
 174
 175 /**
 176  * @name Public Functions
 177  * @{
 178  */
 179
 180 /**
 181  * Append text to the listbox.
 182  */
 183 void irreco_listbox_text_append(IrrecoListboxText *self,
 184                                 const gchar *label,
 185                                 gpointer user_data)
 186 {
 187         IrrecoListbox *parent;
 188         GtkTreeIter iter;
 189         IRRECO_ENTER
 190
 191         parent = IRRECO_LISTBOX(self);
 192         gtk_list_store_append(parent->list_store, &iter);
 193         gtk_list_store_set(parent->list_store, &iter,
 194                            TEXT_COL, label, DATA_COL, user_data, -1);
 195
 196         gtk_tree_view_columns_autosize(GTK_TREE_VIEW(parent->tree_view));
 197
 198         if (parent->select_new_rows == TRUE) {
 199                 gtk_tree_selection_select_iter(parent->tree_selection, &iter);
 200         }
 201
 202         IRRECO_RETURN
 203 }
 204
 205 /** @} */
 206
 207 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-*/
 208 /* Events and Callbacks                                                       */
 209 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-*/
 210
 211 /**
 212  * @name Events and Callbacks
 213  * @{
 214  */
 215
 216 static void irreco_listbox_text_tree_size_request(GtkWidget *widget,
 217                                                   GtkRequisition *requisition,
 218                                                   IrrecoListboxText *self)
 219 {
 220         IrrecoListbox *parent;
 221         gboolean show_hscrollbar = TRUE;
 222         IRRECO_ENTER
 223
 224         parent = IRRECO_LISTBOX(self);
 225
 226         if (requisition->width <= parent->max_width - 22) {
 227                 show_hscrollbar = FALSE;
 228         }
 229
 230         if (requisition->width < parent->min_width - 22) {
 231                 requisition->width = parent->min_width - 22;
 232         } else if (requisition->width > parent->max_width - 22) {
 233                 requisition->width = parent->max_width - 22;
 234         }
 235
 236         if (requisition->height < parent->min_height - 22) {
 237                 requisition->height = parent->min_height - 22;
 238         } else if (requisition->height > parent->max_height &&
 239                    show_hscrollbar == FALSE) {
 240                 requisition->height = parent->max_height;
 241         } else if (requisition->height > parent->max_height - 22) {
 242                 requisition->height = parent->max_height - 22;
 243         }
 244
 245         if (show_hscrollbar == TRUE) {
 246                 gtk_widget_show(parent->hscrollbar);
 247         } else {
 248                 gtk_widget_hide(parent->hscrollbar);
 249         }
 250
 251         IRRECO_RETURN
 252 }
 253
 254 /** @} */
 255
 256 /** @} */
 257