Changeset 766 for branches

Timestamp:

03/28/13 12:43:27 (11 years ago)

Author:

ramonb

Message:

• added drawShadow from trunk to big ClusterImage?

File:

• branches/0.4/web/addons/job_monarch/libtoga.php (modified) (1 diff)

branches/0.4/web/addons/job_monarch/libtoga.php

@@ -1289 +1289 @@
         $this->size    = $BIG_CLUSTERIMAGE_NODEWIDTH;
 
+        $this->drawShadow();
         $this->draw();
+    }
+
+    function drawShadow()
+    {
+        // offset of drop shadow from top left
+        //
+        $ds_offset  = 5;
+
+        // number of steps from black to background color
+        //
+        $ds_steps   = 15;
+
+        // distance between steps
+        //
+        $ds_spread = 1;
+
+        // define the background color
+        //
+        $background = array("r" => 255, "g" => 255, "b" => 255);
+
+        // create a new canvas.  New canvas dimensions should be larger than the original's
+        //
+        $width  = $this->size + $ds_offset;
+        $height = $this->size + $ds_offset;
+
+        // determine the offset between colors
+        //
+        $step_offset = array("r" => ($background['r'] / $ds_steps), "g" => ($background['g'] / $ds_steps), "b" => ($background['b'] / $ds_steps));
+
+        // calculate and allocate the needed colors
+        //
+        $current_color = $background;
+
+        for ($i = 0; $i <= $ds_steps ; $i++)
+        {
+            $colors[$i] = imagecolorallocate($this->image, round($current_color['r']), round($current_color['g']), round($current_color['b']));
+
+            $current_color['r'] -= $step_offset['r'];
+            $current_color['g'] -= $step_offset['g'];
+            $current_color['b'] -= $step_offset['b'];
+        }
+
+        // draw overlapping rectangles to create a drop shadow effect
+        //
+        for ($i = 3; $i < count($colors); $i++)
+        {
+            imagefilledrectangle( $this->image, ($this->x + $ds_offset), ($this->y + $ds_offset), ($this->x + $width), ($this->y + $height), $colors[$i] );
+            $width -= $ds_spread;
+            $height -= $ds_spread;
+        }
     }