I have written up a patch for this bug it is attached with this message.
Index: gnome-games-2.30.2/quadrapassel/preview.cpp
===================================================================
--- gnome-games-2.30.2.orig/quadrapassel/preview.cpp 2011-03-14 22:00:17.876038266 -0400
+++ gnome-games-2.30.2/quadrapassel/preview.cpp 2011-03-15 11:38:09.665052180 -0400
@@ -95,15 +95,26 @@
}
void
+Preview::updateEnable()
+{
+ enabled = games_conf_get_boolean (KEY_OPTIONS_GROUP, KEY_DO_PREVIEW,
+ NULL);
+}
+
+void
Preview::previewBlock(gint bnr, gint bcol)
{
ClutterActor *stage;
stage = gtk_clutter_embed_get_stage (GTK_CLUTTER_EMBED (w));
+ if(enabled == FALSE)
+ return;
+
int x, y;
blocknr = bnr;
color = bcol;
+
for (x = 0; x < PREVIEW_WIDTH; x++) {
for (y = 0; y < PREVIEW_HEIGHT; y++) {
if ((blocknr != -1) &&
Index: gnome-games-2.30.2/quadrapassel/tetris.cpp
===================================================================
--- gnome-games-2.30.2.orig/quadrapassel/tetris.cpp 2011-03-14 22:07:44.613035658 -0400
+++ gnome-games-2.30.2/quadrapassel/tetris.cpp 2011-03-15 11:40:23.977053184 -0400
@@ -519,6 +519,7 @@
void
Tetris::setSelection(GtkWidget *widget, void *data)
{
+
Tetris *t;
t = (Tetris *)data;
@@ -526,6 +527,7 @@
t->field->setTheme (t->themeno);
games_conf_set_string (KEY_OPTIONS_GROUP, KEY_THEME,
ThemeTable[t->themeno].id);
+
}
void
@@ -772,9 +774,11 @@
gtk_box_pack_start (GTK_BOX (fvbox), omenu, FALSE, FALSE, 0);
t->theme_preview = new Preview();
+ // Make sure the block gets rendered properly
+ t->theme_preview->enable(TRUE);
t->theme_preview->setTheme (t->themeno);
gtk_box_pack_start(GTK_BOX(fvbox), t->theme_preview->getWidget(), TRUE, TRUE, 0);
-
+
t->theme_preview->previewBlock(4, 0);
gtk_widget_show_all (t->setupdialog);
@@ -1259,7 +1263,7 @@
t->scoreFrame->resetScore();
t->paused = false;
-
+ t->preview->updateEnable(); // Set whether to show previews to the configured value.
t->field->generateFallingBlock();
t->field->putBlockInField(FALLING);
t->preview->previewBlock(blocknr_next, color_next);
Index: gnome-games-2.30.2/quadrapassel/preview.h
===================================================================
--- gnome-games-2.30.2.orig/quadrapassel/preview.h 2011-03-14 22:12:55.140037020 -0400
+++ gnome-games-2.30.2/quadrapassel/preview.h 2011-03-15 11:38:29.665222543 -0400
@@ -37,6 +37,9 @@
}
void enable (bool enable);
+ // updateEnable reads the configured KEY_DO_PREVIEW value
+ // and updates 'enabled' accordingly.
+ void updateEnable();
void setTheme (guint id);
void previewBlock (int bnr, int bcolor);
