show tag cloud instead of flat tag list

feedlist.js

@@ -46,6 +46,8 @@ function viewfeed(feed, subop, is_cat, subop_param, skip_history, offset) {
 
 		enableHotkeys();
 
+		closeInfoBox();
+
 /*		if (!skip_history) {
 			history_push('FEED:' + feed + ':' + subop + ':' + is_cat +
 				':' + subop_param);

functions.php

@@ -3852,4 +3852,52 @@
 
 		return $topmost_article_ids;
 	}
+
+// from here: http://www.roscripts.com/Create_tag_cloud-71.html
+
+	function printTagCloud($link) {
+	
+		$query = "SELECT tag_name, COUNT(post_int_id) AS count 
+			FROM ttrss_tags WHERE owner_uid = ".$_SESSION["uid"]." 
+			GROUP BY tag_name ORDER BY count DESC LIMIT 50";
+
+		$result = db_query($link, $query);
+
+		$tags = array();
+
+		while ($line = db_fetch_assoc($result)) {
+			$tags[$line["tag_name"]] = $line["count"];
+		}
+
+		ksort($tags);
+
+		$max_size = 32; // max font size in pixels
+		$min_size = 9; // min font size in pixels
+		   
+		// largest and smallest array values
+		$max_qty = max(array_values($tags));
+		$min_qty = min(array_values($tags));
+		   
+		// find the range of values
+		$spread = $max_qty - $min_qty;
+		if ($spread == 0) { // we don't want to divide by zero
+				$spread = 1;
+		}
+		   
+		// set the font-size increment
+		$step = ($max_size - $min_size) / ($spread);
+		   
+		// loop through the tag array
+		foreach ($tags as $key => $value) {
+			// calculate font-size
+			// find the $value in excess of $min_qty
+			// multiply by the font-size increment ($size)
+			// and add the $min_size set above
+			$size = round($min_size + (($value - $min_qty) * $step));
+		   
+			echo "<a href=\"javascript:viewfeed('$key') \" style=\"font-size: " . 
+				$size . "px\" title=\"$value articles tagged with " . 
+				$key . '">' . $key . '</a> ';
+		}
+	}
 ?>

modules/popup-dialog.php

@@ -412,6 +412,30 @@
 			return;
 		}
 
+		if ($id == "printTagCloud") {
+			print "<div id=\"infoBoxTitle\">".__('Tag Cloud')."</div>";
+			print "<div class=\"infoBoxContents\">";
+
+			print "Showing top 50 most popular tags (<a 
+				href='javascript:toggleTags(true)'>show all</a>):<br/>";
+
+			print "<div class=\"tagCloudContainer\">";
+
+			printTagCloud($link);
+
+			print "</div>";
+
+			print "<div align='center'>";
+			print "<input class=\"button\"
+				type=\"submit\" onclick=\"return closeInfoBox()\" 
+				value=\"".__('Close')."\">";
+			print "</div>";
+
+			print "</div>";
+
+			return;
+		}
+
 		print "<div id='infoBoxTitle'>Internal Error</div>
 			<div id='infoBoxContents'>
 			<p>Unknown dialog <b>$id</b></p>

tt-rss.css

@@ -921,6 +921,16 @@ span.groupPrompt {
 	color : #4684ff;
 }
 
+div.tagCloudContainer {
+/*	height : 300px;
+	overflow : auto; */
+	border : 1px solid #99d67a;
+	background-color : white;
+	margin : 5px 0px 5px 0px;
+	padding : 10px;
+	text-align : center;
+}
+
 ul.feedErrorsList {
 	height : 300px;
 	overflow : auto;

tt-rss.js

@@ -27,20 +27,26 @@ function tagsAreDisplayed() {
 	return display_tags;
 }
 
-function toggleTags() {
-	display_tags = !display_tags;
+function toggleTags(show_all) {
 
 	var p = document.getElementById("dispSwitchPrompt");
 
-	if (display_tags) {
+	if (!show_all && !display_tags) {
+		displayDlg("printTagCloud");
+	} else if (show_all) {
+		closeInfoBox();
+		display_tags = true;
 		p.innerHTML = __("display feeds");
-	} else {
-		p.innerHTML = __("display tags");
+		notify_progress("Loading, please wait...");
+		updateFeedList();
+	} else if (display_tags) {
+		display_tags = false;
+		p.innerHTML = __("tag cloud");
+		notify_progress("Loading, please wait...");
+		updateFeedList();
 	}
 
-	notify_progress("Loading, please wait...");
-
-	updateFeedList();
+	return false;
 }
 
 function dlg_frefresh_callback() {
@@ -514,6 +520,7 @@ function quickMenuGo(opid) {
 		if (opid == "qmcAddFilter") {
 			displayDlg("quickAddFilter", getActiveFeedId());
 		}
+
 	} catch (e) {
 		exception_error("quickMenuGo", e);
 	}

tt-rss.php

@@ -122,7 +122,7 @@ window.onload = init;
 <div id="feeds-holder">
 	<div id="dispSwitch"> 
 		<a id="dispSwitchPrompt" 
-			href="javascript:toggleTags()"><?php echo __("display tags") ?></a>
+			href="javascript:toggleTags()"><?php echo __("tag cloud") ?></a>
 	</div>
 	<div id="feeds-frame">&nbsp;</div>
 </div>