The Tor Browser: layout/generic/test/plugin_clipping_lib.js@b8a032363ba2 (annotated)

layout/generic/test/plugin_clipping_lib.js@b8a032363ba2 (annotated)

layout/generic/test/plugin_clipping_lib.js

Thu, 22 Jan 2015 13:21:57 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Thu, 22 Jan 2015 13:21:57 +0100
branch: TOR_BUG_9701
changeset 15: b8a032363ba2
permissions: -rw-r--r--

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

 var checkClipRegion, checkClipRegionForFrame, checkClipRegionNoBounds;
 (function() {
 var windowFrameX, windowFrameY;
 // Import test API
 var is = window.opener.is;
 var ok = window.opener.ok;
 var todo = window.opener.todo;
 var finish = window.opener.SimpleTest.finish;
 window.onerror = function (event) { window.opener.onerror(event); window.close(); };
 function dumpRect(r) {
   return "{" + r.join(",") + "}";
 }
 function dumpRegion(rects) {
   var s = [];
   for (var i = 0; i < rects.length; ++i) {
     var r = rects[i];
     s.push(dumpRect(r));
   }
   return s.join(", ");
 }
 function generateSpan(coords) {
   coords.sort(function(a,b) { return a - b; });
   var result = [coords[0]];
   for (var i = 1; i < coords.length; ++i) {
     if (coords[i] != coords[i - 1]) {
       result.push(coords[i]);
     }
   }
   return result;
 }
 function containsRect(r1, r2) {
   return r1[0] <= r2[0] && r1[2] >= r2[2] &&
          r1[1] <= r2[1] && r1[3] >= r2[3];
 }
 function subtractRect(r1, r2, rlist) {
   var spanX = generateSpan([r1[0], r1[2], r2[0], r2[2]]);
   var spanY = generateSpan([r1[1], r1[3], r2[1], r2[3]]);
   for (var i = 1; i < spanX.length; ++i) {
     for (var j = 1; j < spanY.length; ++j) {
       var subrect = [spanX[i - 1], spanY[j - 1], spanX[i], spanY[j]];
       if (containsRect(r1, subrect) && !containsRect(r2, subrect)) {
         rlist.push(subrect);
       }
     }
   }
 }
 function regionContainsRect(rs, r) {
   var rectList = [r];
   for (var i = 0; i < rs.length; ++i) {
     var newList = [];
     for (var j = 0; j < rectList.length; ++j) {
       subtractRect(rectList[j], rs[i], newList);
     }
     if (newList.length == 0)
       return true;
     rectList = newList;
   }
   return false;
 }
 function regionContains(r1s, r2s) {
   for (var i = 0; i < r2s.length; ++i) {
     if (!regionContainsRect(r1s, r2s[i]))
       return false;
   }
   return true;
 }
 function equalRegions(r1s, r2s) {
   return regionContains(r1s, r2s) && regionContains(r2s, r1s);
 }
 // Checks that a plugin's clip region equals the specified rectangle list.
 // The rectangles are given relative to the plugin's top-left. They are in
 // [left, top, right, bottom] format.
 function checkClipRegionWithDoc(doc, offsetX, offsetY, id, rects, checkBounds) {
   var p = doc.getElementById(id);
   var bounds = p.getBoundingClientRect();
   var pX = p.getEdge(0);
   var pY = p.getEdge(1);
   if (checkBounds) {
     var pWidth = p.getEdge(2) - pX;
     var pHeight = p.getEdge(3) - pY;
     is(pX, windowFrameX + bounds.left + offsetX, id + " plugin X");
     is(pY, windowFrameY + bounds.top + offsetY, id + " plugin Y");
     is(pWidth, bounds.width, id + " plugin width");
     is(pHeight, bounds.height, id + " plugin height");
   }
   // Now check clip region. 'rects' is relative to the plugin's top-left.
   var clipRects = [];
   var n = p.getClipRegionRectCount();
   for (var i = 0; i < n; ++i) {
     // Convert the clip rect to be relative to the plugin's top-left.
     clipRects[i] = [
       p.getClipRegionRectEdge(i, 0) - pX,
       p.getClipRegionRectEdge(i, 1) - pY,
       p.getClipRegionRectEdge(i, 2) - pX,
       p.getClipRegionRectEdge(i, 3) - pY
     ];
   }
   ok(equalRegions(clipRects, rects), "Matching regions for '" + id +
       "': expected " + dumpRegion(rects) + ", got " + dumpRegion(clipRects));
 }
 checkClipRegion = function checkClipRegion(id, rects) {
   checkClipRegionWithDoc(document, 0, 0, id, rects, true);
 }
 checkClipRegionForFrame = function checkClipRegionForFrame(fid, id, rects) {
   var f = document.getElementById(fid);
   var bounds = f.getBoundingClientRect();
   checkClipRegionWithDoc(f.contentDocument, bounds.left, bounds.top, id, rects, true);
 }
 checkClipRegionNoBounds = function checkClipRegionNoBounds(id, rects) {
   checkClipRegionWithDoc(document, 0, 0, id, rects, false);
 }
 function loaded() {
   var h1 = document.getElementById("h1");
   var h2 = document.getElementById("h2");
   var hwidth = h2.boxObject.screenX - h1.boxObject.screenX;
   if (hwidth != 100) {
     // Maybe it's a DPI issue
     todo(false, "Unexpected DPI?");
     finish();
     window.close();
     return;
   }
   if (!document.getElementById("p1").identifierToStringTest) {
     todo(false, "Test plugin not available");
     finish();
     window.close();
     return;
   }
   var bounds = h1.getBoundingClientRect();
   windowFrameX = h1.boxObject.screenX - bounds.left - window.screenX;
   windowFrameY = h1.boxObject.screenY - bounds.top - window.screenY;
   // Run actual test code
   runTests();
 }
 // Need to run 'loaded' after painting is unsuppressed, or we'll set clip
 // regions to empty.  The timeout must be non-zero on X11 so that
 // gtk_container_idle_sizer runs after the GtkSocket gets the plug_window.
 window.addEventListener("load",
                         function () { setTimeout(loaded, 1000); }, false);
 })();