+ function setDisposition($on, $off, $tile)
+ {
+ if ($on) {
+ $this->disposition |= BACKGROUND_ON;
+ } else {
+ $this->disposition &= ~BACKGROUND_ON;
+ }
+
+ if ($off) {
+ $this->disposition |= BACKGROUND_OFF;
+ } else {
+ $this->disposition &= ~BACKGROUND_OFF;
+ }
+
+ if ($tile) {
+ $this->disposition |= BACKGROUND_TILE;
+ } else {
+ $this->disposition &= ~BACKGROUND_TILE;
+ }
+ }
+
+ /**
+ * Return a design object based on the configured site design.
+ *
+ * @return Design a singleton design object for the site.
+ */
+
+ static function siteDesign()
+ {
+ static $siteDesign = null;
+
+ if (empty($siteDesign)) {
+
+ $siteDesign = new Design();
+
+ $attrs = array('backgroundcolor',
+ 'contentcolor',
+ 'sidebarcolor',
+ 'textcolor',
+ 'linkcolor',
+ 'backgroundimage',
+ 'disposition');
+
+ foreach ($attrs as $attr) {
+ $val = common_config('design', $attr);
+ if ($val !== false) {
+ $siteDesign->$attr = $val;
+ }
+ }
+ }
+
+ return $siteDesign;
+ }