Add red color for current instruction in pgmwin

diff --git a/src/pgmwin.c b/src/pgmwin.c
index 41c74d8..aae6afc 100644 (file)
--- a/src/pgmwin.c
+++ b/src/pgmwin.c
@@ -44,6 +44,7 @@ enum
        COL_B2,
        COL_INST,
        COL_ARGS,
+       COL_COLOR,
        N_COLUMNS,
 };
 
@@ -55,6 +56,7 @@ char *col_names[N_COLUMNS] = {
        "B2",
        "Mnemonic",
        "Arguments",
+       "COLOR", /* Not displayed, used to set foreground color of cell. */
 };
 
 /* Creating a model */
@@ -67,14 +69,22 @@ pgmwin_init_store(void)
        GtkListStore *store;
        GType col_types[N_COLUMNS];
 
+       /* No need for static array, all our columns are of the same type. */
        for (col = 0; col < N_COLUMNS; col++)
                col_types[col] = G_TYPE_STRING;
 
        store = gtk_list_store_newv(N_COLUMNS, col_types);
 
        /* Initialize with rows of dummy data... */
-       for (rows = 0; rows < DATA_ROWS; rows++)
+       for (rows = 0; rows < DATA_ROWS; rows++) {
                gtk_list_store_append(store, &iter);
+               if (rows == 0) {
+                       /* Color first row in red (current instruction). */
+                       gtk_list_store_set(store, &iter, COL_COLOR, "red", -1);
+               } else {
+                       gtk_list_store_set(store, &iter, COL_COLOR, "black", -1);
+               }
+       }
 
        return store;
 }
@@ -85,18 +95,27 @@ pgmwin_init_columns(void)
        int k;
        GtkCellRenderer *renderer;
 
-       /* Columns and cell renderers */
+       /* Create renderer */
        renderer = gtk_cell_renderer_text_new();
 
-       /* Add columns */
-       for (k = 0; k < N_COLUMNS; k++) {
+       /* Add columns, except for last one (COL_COLOR). */
+       for (k = 0; k < COL_COLOR; k++) {
                GtkTreeViewColumn *col;
 
-               col = gtk_tree_view_column_new_with_attributes(
-                       col_names[k], renderer, "text", k, NULL);
+               /* Create tree view column */
+               col = gtk_tree_view_column_new();
+               gtk_tree_view_column_set_title(col, col_names[k]);
                gtk_tree_view_column_set_sizing(col,
                                                GTK_TREE_VIEW_COLUMN_AUTOSIZE);
                gtk_tree_view_append_column(GTK_TREE_VIEW(pgmlist), col);
+
+               /* Pack cell renderer into column */
+               gtk_tree_view_column_pack_start(col, renderer, TRUE);
+
+               /* Establish connection between cell renderer and data store. */
+               gtk_tree_view_column_set_attributes(col, renderer, "text", k,
+                                                   "foreground", COL_COLOR,
+                                                   NULL);
        }
 }