From: Norman Walsh <ndw@nwalsh.com>
Date: Thu, 30 May 2002 10:20:25 +0000 (+0000)
Subject: Hide the overlay if content overlaps
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=33003634ccf848712f9c9cdbfca8d1b96c83644c;p=docbook-dsssl

Hide the overlay if content overlaps
---

diff --git a/slides/browser/overlay.js b/slides/browser/overlay.js
index cc60779c7..644bb5b96 100644
--- a/slides/browser/overlay.js
+++ b/slides/browser/overlay.js
@@ -18,7 +18,9 @@ var overlayNS4 = document.layers ? 1 : 0;
 var overlayIE  = document.all ? 1 : 0;
 var overlayNS6 = document.getElementById && !document.all ? 1 : 0;
 
-var overlayDelay=60;
+var overlayPadX = 15;
+var overlayPadY = 5;
+var overlayDelay = 60;
 
 var overlayCorner = 'ur'; // ul, ll, ur, lr, uc, lc, cl, cr
 
@@ -30,8 +32,9 @@ function overlayRefresh() {
     var overlayY = 0;
     var overlayW = 0;
     var overlayH = 0;
-    var overlayPadX = 15;
-    var overlayPadY = 5;
+    var contentH = 0;
+
+    var body = xbGetElementsByName('BODY')[0];
 
     if (overlayIE) {
 	overlayLx = document.body.clientWidth;
@@ -45,16 +48,19 @@ function overlayRefresh() {
 
 	overlayH  = overlayDiv.offsetHeight;
 	overlayW  = overlayDiv.offsetWidth;
+	contentH  = body.offsetHeight;
     } else if (overlayNS4) {
 	overlayLy = window.innerHeight;
 	overlayLx = window.innerWidth;
 	overlayH  = document.overlayDiv.clip.height;
 	overlayW  = document.overlayDiv.clip.width;
+	contentH  = body.clip.height;
     } else if (overlayNS6) {
 	overlayLy = window.innerHeight;
 	overlayLx = window.innerWidth;
 	overlayH  = document.getElementById('overlayDiv').offsetHeight;
 	overlayW  = document.getElementById('overlayDiv').offsetWidth;
+	contentH  = body.offsetHeight;
     }
 
     if (overlayCorner == 'ul') {
@@ -86,10 +92,18 @@ function overlayRefresh() {
     if (overlayIE) {
 	overlayDiv.style.left=overlayX;
 	overlayDiv.style.top=overlayY+document.body.scrollTop;
+
+	if (contentH > overlayLy) {
+	    overlayDiv.style.visibility = "hidden";
+	}
     } else if (overlayNS4) {
 	document.overlayDiv.pageX=overlayX;
 	document.overlayDiv.pageY=overlayY+window.pageYOffset;
 	document.overlayDiv.visibility="visible";
+
+	if (contentH > overlayLy) {
+	    document.overlayDiv.style.visibility = "hidden";
+	}
     } else if (overlayNS6) {
 	var div = document.getElementById("overlayDiv");
 	var leftpx = overlayX;
@@ -97,6 +111,10 @@ function overlayRefresh() {
 
 	div.style.left = leftpx + "px";
 	div.style.top = toppx + "px";
+
+	if (contentH > overlayLy) {
+	    div.style.visibility = "hidden";
+	}
     }
 }