Add page coordinates to the ViewportAPI

third_party/WebKit/Source/core/frame/DOMVisualViewport.cpp

 /*
  * Copyright (C) 2016 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *  * Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  *  * Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 10 matching lines @@
  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "core/frame/DOMVisualViewport.h"
 
 #include "core/dom/Document.h"
 #include "core/dom/Element.h"
 #include "core/frame/FrameHost.h"
+#include "core/frame/FrameView.h"
 #include "core/frame/LocalDOMWindow.h"
 #include "core/frame/LocalFrame.h"
 #include "core/frame/VisualViewport.h"
 #include "core/page/Page.h"
 #include "core/style/ComputedStyle.h"
 
 namespace blink {
 
 DOMVisualViewport::DOMVisualViewport(LocalDOMWindow* window)
     : m_window(window)
@@ skipping 37 matching lines @@
     LocalFrame* frame = m_window->frame();
     if (!frame || !frame->isMainFrame())
         return 0;
 
     if (FrameHost* host = frame->host())
         return host->visualViewport().scrollTop();
 
     return 0;
 }
 
+double DOMVisualViewport::pageX()
+{
+    LocalFrame* frame = m_window->frame();
+    if (!frame)
+        return 0;
+
+    FrameView* view = frame->view();
+    if (!view)
+        return 0;
+
+    frame->document()->updateStyleAndLayoutIgnorePendingStylesheets();
+    double viewportX = view->getScrollableArea()->scrollPositionDouble().x();
+    return adjustScrollForAbsoluteZoom(viewportX, frame->pageZoomFactor());
+}
+
+double DOMVisualViewport::pageY()
+{
+    LocalFrame* frame = m_window->frame();
+    if (!frame)
+        return 0;
+
+    FrameView* view = frame->view();
+    if (!view)
+        return 0;
+
+    frame->document()->updateStyleAndLayoutIgnorePendingStylesheets();
+    double viewportY = view->getScrollableArea()->scrollPositionDouble().y();
+    return adjustScrollForAbsoluteZoom(viewportY, frame->pageZoomFactor());
+}
+
 double DOMVisualViewport::clientWidth()
 {
     LocalFrame* frame = m_window->frame();
     if (!frame)
         return 0;
 
     if (!frame->isMainFrame()) {
         FloatSize viewportSize = m_window->getViewportSize(ExcludeScrollbars);
         return adjustForAbsoluteZoom(expandedIntSize(viewportSize).width(), frame->pageZoomFactor());
     }
@@ skipping 30 matching lines @@
     if (!frame->isMainFrame())
         return 1;
 
     if (FrameHost* host = m_window->frame()->host())
         return host->visualViewport().pageScale();
 
     return 0;
 }
 
 } // namespace blink