summaryrefslogtreecommitdiff
path: root/source/bower_components/modernizr/feature-detects/css-regions.js
diff options
context:
space:
mode:
Diffstat (limited to 'source/bower_components/modernizr/feature-detects/css-regions.js')
-rw-r--r--source/bower_components/modernizr/feature-detects/css-regions.js55
1 files changed, 55 insertions, 0 deletions
diff --git a/source/bower_components/modernizr/feature-detects/css-regions.js b/source/bower_components/modernizr/feature-detects/css-regions.js
new file mode 100644
index 0000000..c8995c3
--- /dev/null
+++ b/source/bower_components/modernizr/feature-detects/css-regions.js
@@ -0,0 +1,55 @@
+// CSS Regions
+// http://www.w3.org/TR/css3-regions/
+// By: Mihai Balan
+
+// We start with a CSS parser test then we check page geometry to see if it's affected by regions
+// Later we might be able to retire the second part, as WebKit builds with the false positives die out
+
+Modernizr.addTest('regions', function() {
+
+ /* Get the 'flowFrom' property name available in the browser. Either default or vendor prefixed.
+ If the property name can't be found we'll get Boolean 'false' and fail quickly */
+ var flowFromProperty = Modernizr.prefixed("flowFrom"),
+ flowIntoProperty = Modernizr.prefixed("flowInto");
+
+ if (!flowFromProperty || !flowIntoProperty){
+ return false;
+ }
+
+ /* If CSS parsing is there, try to determine if regions actually work. */
+ var container = document.createElement('div'),
+ content = document.createElement('div'),
+ region = document.createElement('div'),
+
+ /* we create a random, unlikely to be generated flow number to make sure we don't
+ clash with anything more vanilla, like 'flow', or 'article', or 'f1' */
+ flowName = 'modernizr_flow_for_regions_check';
+
+ /* First create a div with two adjacent divs inside it. The first will be the
+ content, the second will be the region. To be able to distinguish between the two,
+ we'll give the region a particular padding */
+ content.innerText = 'M';
+ container.style.cssText = 'top: 150px; left: 150px; padding: 0px;';
+ region.style.cssText = 'width: 50px; height: 50px; padding: 42px;';
+
+ region.style[flowFromProperty] = flowName;
+ container.appendChild(content);
+ container.appendChild(region);
+ document.documentElement.appendChild(container);
+
+ /* Now compute the bounding client rect, before and after attempting to flow the
+ content div in the region div. If regions are enabled, the after bounding rect
+ should reflect the padding of the region div.*/
+ var flowedRect, delta,
+ plainRect = content.getBoundingClientRect();
+
+
+ content.style[flowIntoProperty] = flowName;
+ flowedRect = content.getBoundingClientRect();
+
+ delta = flowedRect.left - plainRect.left;
+ document.documentElement.removeChild(container);
+ content = region = container = undefined;
+
+ return (delta == 42);
+});