Bug 1075670 - Make event.screen[XY] work in content processes (r=smaug,kats,tn,joshmoz)

browser/base/content/tabbrowser.xml

@@ -3779,8 +3779,7 @@
                                         };
               let popup = browser.ownerDocument.getElementById("contentAreaContextMenu");
               let event = gContextMenuContentData.event;
-              let pos = browser.mapScreenCoordinatesFromContent(event.screenX, event.screenY);
+              popup.openPopupAtScreen(event.screenX, event.screenY, true);
-              popup.openPopupAtScreen(pos.x, pos.y, true);
               break;
             }
             case "DOMWebNotificationClicked": {

dom/base/nsFrameLoader.cpp

@@ -884,8 +884,7 @@ nsFrameLoader::ShowRemoteFrame(const ScreenIntSize& size,
 
     // Don't show remote iframe if we are waiting for the completion of reflow.
     if (!aFrame || !(aFrame->GetStateBits() & NS_FRAME_FIRST_REFLOW)) {
-      nsIntPoint chromeDisp = aFrame->GetChromeDisplacement();
+      mRemoteBrowser->UpdateDimensions(dimensions, size);
-      mRemoteBrowser->UpdateDimensions(dimensions, size, chromeDisp);
     }
   }
 
@@ -1383,6 +1382,12 @@ nsFrameLoader::StartDestroy()
     }
   }
 
+  // If the TabParent has installed any event listeners on the window, this is
+  // its last chance to remove them while we're still in the document.
+  if (mRemoteBrowser) {
+    mRemoteBrowser->RemoveWindowListeners();
+  }
+
   nsCOMPtr<nsIDocument> doc;
   bool dynamicSubframeRemoval = false;
   if (mOwnerContent) {
@@ -2058,8 +2063,7 @@ nsFrameLoader::UpdatePositionAndSize(nsSubDocumentFrame *aIFrame)
       ScreenIntSize size = aIFrame->GetSubdocumentSize();
       nsIntRect dimensions;
       NS_ENSURE_SUCCESS(GetWindowDimensions(dimensions), NS_ERROR_FAILURE);
-      nsIntPoint chromeDisp = aIFrame->GetChromeDisplacement();
+      mRemoteBrowser->UpdateDimensions(dimensions, size);
-      mRemoteBrowser->UpdateDimensions(dimensions, size, chromeDisp);
     }
     return NS_OK;
   }

dom/base/nsFrameLoader.h

@@ -229,6 +229,9 @@ public:
   void ActivateUpdateHitRegion();
   void DeactivateUpdateHitRegion();
 
+  // Properly retrieves documentSize of any subdocument type.
+  nsresult GetWindowDimensions(nsIntRect& aRect);
+
 private:
 
   void SetOwnerContent(mozilla::dom::Element* aContent);
@@ -284,9 +287,6 @@ private:
   nsresult MaybeCreateDocShell();
   nsresult EnsureMessageManager();
 
-  // Properly retrieves documentSize of any subdocument type.
-  nsresult GetWindowDimensions(nsIntRect& aRect);
-
   // Updates the subdocument position and size. This gets called only
   // when we have our own in-process DocShell.
   void UpdateBaseWindowPositionAndSize(nsSubDocumentFrame *aIFrame);

dom/ipc/TabChild.cpp

@@ -2026,7 +2026,7 @@ TabChild::RecvUpdateDimensions(const nsIntRect& rect, const ScreenIntSize& size,
     mOrientation = orientation;
     ScreenIntSize oldScreenSize = mInnerSize;
     mInnerSize = size;
-    mWidget->Resize(0, 0, size.width, size.height,
+    mWidget->Resize(rect.x + chromeDisp.x, rect.y + chromeDisp.y, size.width, size.height,
                      true);
 
     nsCOMPtr<nsIBaseWindow> baseWin = do_QueryInterface(WebNavigation());

dom/ipc/TabParent.cpp

@@ -80,6 +80,7 @@
 #include "nsICancelable.h"
 #include "gfxPrefs.h"
 #include "nsILoginManagerPrompter.h"
+#include "nsPIWindowRoot.h"
 #include <algorithm>
 
 using namespace mozilla::dom;
@@ -267,6 +268,7 @@ TabParent::TabParent(nsIContentParent* aManager,
   , mDefaultScale(0)
   , mShown(false)
   , mUpdatedDimensions(false)
+  , mChromeOffset(0, 0)
   , mManager(aManager)
   , mMarkedDestroying(false)
   , mIsDestroyed(false)
@@ -325,10 +327,36 @@ TabParent::CacheFrameLoader(nsFrameLoader* aFrameLoader)
 void
 TabParent::SetOwnerElement(Element* aElement)
 {
+  // If we held previous content then unregister for its events.
+  RemoveWindowListeners();
+
+  // Update to the new content, and register to listen for events from it.
   mFrameElement = aElement;
+  if (mFrameElement && mFrameElement->OwnerDoc()->GetWindow()) {
+    nsCOMPtr<nsPIDOMWindow> window = mFrameElement->OwnerDoc()->GetWindow();
+    nsCOMPtr<EventTarget> eventTarget = window->GetTopWindowRoot();
+    if (eventTarget) {
+      eventTarget->AddEventListener(NS_LITERAL_STRING("MozUpdateWindowPos"),
+                                    this, false, false);
+    }
+  }
+
   TryCacheDPIAndScale();
 }
 
+void
+TabParent::RemoveWindowListeners()
+{
+  if (mFrameElement && mFrameElement->OwnerDoc()->GetWindow()) {
+    nsCOMPtr<nsPIDOMWindow> window = mFrameElement->OwnerDoc()->GetWindow();
+    nsCOMPtr<EventTarget> eventTarget = window->GetTopWindowRoot();
+    if (eventTarget) {
+      eventTarget->RemoveEventListener(NS_LITERAL_STRING("MozUpdateWindowPos"),
+                                       this, false);
+    }
+  }
+}
+
 void
 TabParent::GetAppType(nsAString& aOut)
 {
@@ -880,8 +908,7 @@ TabParent::RecvSetDimensions(const uint32_t& aFlags,
 }
 
 void
-TabParent::UpdateDimensions(const nsIntRect& rect, const ScreenIntSize& size,
+TabParent::UpdateDimensions(const nsIntRect& rect, const ScreenIntSize& size)
-                            const nsIntPoint& aChromeDisp)
 {
   if (mIsDestroyed) {
     return;
@@ -889,15 +916,25 @@ TabParent::UpdateDimensions(const nsIntRect& rect, const ScreenIntSize& size,
   hal::ScreenConfiguration config;
   hal::GetCurrentScreenConfiguration(&config);
   ScreenOrientation orientation = config.orientation();
+  nsIntPoint chromeOffset = -LayoutDevicePixel::ToUntyped(GetChildProcessOffset());
 
   if (!mUpdatedDimensions || mOrientation != orientation ||
-      mDimensions != size || !mRect.IsEqualEdges(rect)) {
+      mDimensions != size || !mRect.IsEqualEdges(rect) ||
+      chromeOffset != mChromeOffset) {
+    nsCOMPtr<nsIWidget> widget = GetWidget();
+    nsIntRect contentRect = rect;
+    if (widget) {
+      contentRect.x += widget->GetClientOffset().x;
+      contentRect.y += widget->GetClientOffset().y;
+    }
+
     mUpdatedDimensions = true;
-    mRect = rect;
+    mRect = contentRect;
     mDimensions = size;
     mOrientation = orientation;
+    mChromeOffset = chromeOffset;
 
-    unused << SendUpdateDimensions(mRect, mDimensions, mOrientation, aChromeDisp);
+    unused << SendUpdateDimensions(mRect, mDimensions, mOrientation, mChromeOffset);
   }
 }
 
@@ -2740,6 +2777,27 @@ TabParent::DeallocPPluginWidgetParent(mozilla::plugins::PPluginWidgetParent* aAc
   return true;
 }
 
+nsresult
+TabParent::HandleEvent(nsIDOMEvent* aEvent)
+{
+  nsAutoString eventType;
+  aEvent->GetType(eventType);
+
+  if (eventType.EqualsLiteral("MozUpdateWindowPos") && !mIsDestroyed) {
+    // This event is sent when the widget moved.  Therefore we only update
+    // the position.
+    nsRefPtr<nsFrameLoader> frameLoader = GetFrameLoader();
+    if (!frameLoader) {
+      return NS_OK;
+    }
+    nsIntRect windowDims;
+    NS_ENSURE_SUCCESS(frameLoader->GetWindowDimensions(windowDims), NS_ERROR_FAILURE);
+    UpdateDimensions(windowDims, mDimensions);
+    return NS_OK;
+  }
+  return NS_OK;
+}
+
 class FakeChannel final : public nsIChannel,
                           public nsIAuthPromptCallback,
                           public nsIInterfaceRequestor,

dom/ipc/TabParent.h

@@ -60,6 +60,7 @@ class Element;
 struct StructuredCloneData;
 
 class TabParent final : public PBrowserParent
+                      , public nsIDOMEventListener
                       , public nsITabParent
                       , public nsIAuthPromptProvider
                       , public nsISecureBrowserUI
@@ -73,6 +74,8 @@ class TabParent final : public PBrowserParent
 public:
     // nsITabParent
     NS_DECL_NSITABPARENT
+    // nsIDOMEventListener interfaces
+    NS_DECL_NSIDOMEVENTLISTENER
 
     TabParent(nsIContentParent* aManager,
               const TabId& aTabId,
@@ -107,6 +110,8 @@ public:
 
     void Destroy();
 
+    void RemoveWindowListeners();
+
     virtual bool RecvMoveFocus(const bool& aForward) override;
     virtual bool RecvEvent(const RemoteDOMEvent& aEvent) override;
     virtual bool RecvReplyKeyEvent(const WidgetKeyboardEvent& aEvent) override;
@@ -225,8 +230,7 @@ public:
     // message-sending functions under a layer of indirection and
     // eating the return values
     void Show(const ScreenIntSize& size, bool aParentIsActive);
-    void UpdateDimensions(const nsIntRect& rect, const ScreenIntSize& size,
+    void UpdateDimensions(const nsIntRect& rect, const ScreenIntSize& size);
-                          const nsIntPoint& chromeDisp);
     void UpdateFrame(const layers::FrameMetrics& aFrameMetrics);
     void UIResolutionChanged();
     void RequestFlingSnap(const FrameMetrics::ViewID& aScrollId,
@@ -427,6 +431,7 @@ protected:
     CSSToLayoutDeviceScale mDefaultScale;
     bool mShown;
     bool mUpdatedDimensions;
+    nsIntPoint mChromeOffset;
 
 private:
     already_AddRefed<nsFrameLoader> GetFrameLoader(bool aUseCachedFrameLoaderAfterDestroy = false) const;

dom/plugins/base/nsPluginInstanceOwner.cpp

@@ -790,7 +790,6 @@ NPBool nsPluginInstanceOwner::ConvertPointPuppet(PuppetWidget *widget,
   tabContentBounds.ScaleInverseRoundOut(scaleFactor);
   int32_t windowH = tabContentBounds.height + int(chromeSize.y);
 
-  // This is actually relative to window-chrome.
   nsPoint pluginPosition = AsNsPoint(pluginFrame->GetScreenRect().TopLeft());
 
   // Convert (sourceX, sourceY) to 'real' (not PuppetWidget) screen space.
@@ -800,8 +799,8 @@ NPBool nsPluginInstanceOwner::ConvertPointPuppet(PuppetWidget *widget,
   nsPoint screenPoint;
   switch (sourceSpace) {
     case NPCoordinateSpacePlugin:
-      screenPoint = sourcePoint + pluginFrame->GetContentRectRelativeToSelf().TopLeft() +
+      screenPoint = sourcePoint + pluginPosition +
-        chromeSize + pluginPosition + windowPosition;
+        pluginFrame->GetContentRectRelativeToSelf().TopLeft() / nsPresContext::AppUnitsPerCSSPixel();
       break;
     case NPCoordinateSpaceWindow:
       screenPoint = nsPoint(sourcePoint.x, windowH-sourcePoint.y) +
@@ -824,8 +823,8 @@ NPBool nsPluginInstanceOwner::ConvertPointPuppet(PuppetWidget *widget,
   nsPoint destPoint;
   switch (destSpace) {
     case NPCoordinateSpacePlugin:
-      destPoint = screenPoint - pluginFrame->GetContentRectRelativeToSelf().TopLeft() -
+      destPoint = screenPoint - pluginPosition -
-        chromeSize - pluginPosition - windowPosition;
+        pluginFrame->GetContentRectRelativeToSelf().TopLeft() / nsPresContext::AppUnitsPerCSSPixel();
       break;
     case NPCoordinateSpaceWindow:
       destPoint = screenPoint - windowPosition;

embedding/browser/nsDocShellTreeOwner.cpp

@@ -1452,8 +1452,14 @@ ChromeTooltipListener::sTooltipCallback(nsITimer *aTimer,
       if (textFound) {
         nsString tipText(tooltipText);
         LayoutDeviceIntPoint screenDot = widget->WidgetToScreenOffset();
-        self->ShowTooltip(self->mMouseScreenX - screenDot.x,
+        double scaleFactor = 1.0;
-                          self->mMouseScreenY - screenDot.y,
+        if (shell->GetPresContext()) {
+          scaleFactor = double(nsPresContext::AppUnitsPerCSSPixel())/
+          shell->GetPresContext()->DeviceContext()->AppUnitsPerDevPixelAtUnitFullZoom();
+        }
+        // ShowTooltip expects widget-relative position.
+        self->ShowTooltip(self->mMouseScreenX - screenDot.x / scaleFactor,
+          self->mMouseScreenY - screenDot.y / scaleFactor,
           tipText);
       }
     }

layout/base/nsDisplayList.cpp

@@ -902,6 +902,7 @@ nsDisplayScrollLayer::ComputeFrameMetrics(nsIFrame* aForFrame,
       if (widget) {
         nsIntRect widgetBounds;
         widget->GetBounds(widgetBounds);
+        widgetBounds.MoveTo(0,0);
         metrics.mCompositionBounds = ParentLayerRect(ViewAs<ParentLayerPixel>(widgetBounds));
 #ifdef MOZ_WIDGET_ANDROID
         if (frameBounds.height < metrics.mCompositionBounds.height) {

layout/generic/nsSubDocumentFrame.cpp

@@ -1275,24 +1275,3 @@ nsSubDocumentFrame::ObtainIntrinsicSizeFrame()
   }
   return nullptr;
 }
-
-nsIntPoint
-nsSubDocumentFrame::GetChromeDisplacement()
-{
-  nsIFrame* nextFrame = nsLayoutUtils::GetCrossDocParentFrame(this);
-  if (!nextFrame) {
-    NS_WARNING("Couldn't find window chrome to calculate displacement to.");
-    return nsIntPoint();
-  }
-
-  nsIFrame* rootFrame = nextFrame;
-  while (nextFrame) {
-    rootFrame = nextFrame;
-    nextFrame = nsLayoutUtils::GetCrossDocParentFrame(rootFrame);
-  }
-
-  nsPoint offset = GetOffsetToCrossDoc(rootFrame);
-  int32_t appUnitsPerDevPixel = rootFrame->PresContext()->AppUnitsPerDevPixel();
-  return nsIntPoint((int)(offset.x/appUnitsPerDevPixel),
-                    (int)(offset.y/appUnitsPerDevPixel));
-}

layout/generic/nsSubDocumentFrame.h

@@ -128,8 +128,6 @@ public:
    */
   bool PassPointerEventsToChildren();
 
-  nsIntPoint GetChromeDisplacement();
-
 protected:
   friend class AsyncFrameInit;
 

toolkit/components/satchel/AutoCompleteE10S.jsm

@@ -81,9 +81,8 @@ this.AutoCompleteE10S = {
     this.popup.hidden = false;
     this.popup.setAttribute("width", rect.width);
 
-    let {x, y} = this.browser.mapScreenCoordinatesFromContent(rect.left, rect.top + rect.height);
+    this.x = rect.left;
-    this.x = x;
+    this.y = rect.top + rect.height;
-    this.y = y;
   },
 
   _showPopup: function(results) {

toolkit/content/widgets/browser.xml

@@ -892,8 +892,7 @@
               if (!this.autoscrollEnabled) {
                 return false;
               }
-              let pos = this.mapScreenCoordinatesFromContent(data.screenX, data.screenY);
+              this.startScroll(data.scrolldir, data.screenX, data.screenY);
-              this.startScroll(data.scrolldir, pos.x, pos.y);
               return true;
             }
             case "Autoscroll:Cancel":
@@ -1074,25 +1073,6 @@
         </body>
       </method>
 
-      <!--
-        For out-of-process code, event.screen[XY] is relative to the
-        left/top of the content view. For in-process code,
-        event.screen[XY] is relative to the left/top of the screen. We
-        use this method to map screen coordinates received from a
-        (possibly out-of-process) <browser> element to coordinates
-        that are relative to the screen. This code handles the
-        in-process case, where we return the coordinates unchanged.
-      -->
-      <method name="mapScreenCoordinatesFromContent">
-        <parameter name="aScreenX"/>
-        <parameter name="aScreenY"/>
-        <body>
-        <![CDATA[
-          return { x: aScreenX, y: aScreenY };
-        ]]>
-        </body>
-      </method>
-
       <method name="swapDocShells">
         <parameter name="aOtherBrowser"/>
         <body>

toolkit/content/widgets/remote-browser.xml

@@ -387,27 +387,6 @@
         ]]></body>
       </method>
 
-      <!--
-        For out-of-process code, event.screen[XY] is relative to the
-        left/top of the content view. For in-process code,
-        event.screen[XY] is relative to the left/top of the screen. We
-        use this method to map screen coordinates received from a
-        (possibly out-of-process) <browser> element to coordinates
-        that are relative to the screen. This code handles the
-        out-of-process case, where we need to translate by the screen
-        position of the <browser> element.
-      -->
-      <method name="mapScreenCoordinatesFromContent">
-        <parameter name="aScreenX"/>
-        <parameter name="aScreenY"/>
-        <body>
-        <![CDATA[
-          return { x: aScreenX + this.boxObject.screenX,
-                   y: aScreenY + this.boxObject.screenY };
-        ]]>
-        </body>
-      </method>
-
       <method name="enableDisableCommands">
         <parameter name="aAction"/>
         <parameter name="aEnabledLength"/>

toolkit/modules/SelectParentHelper.jsm

@@ -28,8 +28,7 @@ this.SelectParentHelper = {
     currentBrowser = browser;
     this._registerListeners(menulist.menupopup);
 
-    let {x, y} = browser.mapScreenCoordinatesFromContent(rect.left, rect.top + rect.height);
+    menulist.menupopup.openPopupAtScreen(rect.left, rect.top + rect.height);
-    menulist.menupopup.openPopupAtScreen(x, y);
     menulist.selectedItem.scrollIntoView();
   },
 

widget/PuppetWidget.cpp

@@ -1013,6 +1013,13 @@ PuppetWidget::GetWindowPosition()
   return nsIntPoint(winX, winY);
 }
 
+NS_METHOD
+PuppetWidget::GetScreenBounds(nsIntRect &aRect) {
+  aRect.MoveTo(LayoutDeviceIntPoint::ToUntyped(WidgetToScreenOffset()));
+  aRect.SizeTo(mBounds.Size());
+  return NS_OK;
+}
+
 PuppetScreen::PuppetScreen(void *nativeScreen)
 {
 }

widget/PuppetWidget.h

@@ -78,7 +78,7 @@ public:
                                int32_t* aY) override
   { *aX = kMaxDimension;  *aY = kMaxDimension;  return NS_OK; }
 
-  // We're always at <0, 0>, and so ignore move requests.
+  // Widget position is controlled by the parent process via TabChild.
   NS_IMETHOD Move(double aX, double aY) override
   { return NS_OK; }
 
@@ -90,8 +90,14 @@ public:
                     double aWidth,
                     double aHeight,
                     bool   aRepaint) override
-  // (we're always at <0, 0>)
+  {
-  { return Resize(aWidth, aHeight, aRepaint); }
+    if (mBounds.x != aX || mBounds.y != aY) {
+      NotifyWindowMoved(aX, aY);
+    }
+    mBounds.x = aX;
+    mBounds.y = aY;
+    return Resize(aWidth, aHeight, aRepaint);
+  }
 
   // XXX/cjones: copying gtk behavior here; unclear what disabling a
   // widget is supposed to entail
@@ -121,9 +127,8 @@ public:
   NS_IMETHOD SetTitle(const nsAString& aTitle) override
   { return NS_ERROR_UNEXPECTED; }
   
-  // PuppetWidgets are always at <0, 0>.
   virtual mozilla::LayoutDeviceIntPoint WidgetToScreenOffset() override
-  { return mozilla::LayoutDeviceIntPoint(0, 0); }
+  { return LayoutDeviceIntPoint::FromUntyped(GetWindowPosition() + GetChromeDimensions()); }
 
   void InitEvent(WidgetGUIEvent& aEvent, nsIntPoint* aPoint = nullptr);
 
@@ -198,6 +203,8 @@ public:
   // Get the screen position of the application window.
   nsIntPoint GetWindowPosition();
 
+  NS_IMETHOD GetScreenBounds(nsIntRect &aRect) override;
+
   NS_IMETHOD StartPluginIME(const mozilla::WidgetKeyboardEvent& aKeyboardEvent,
                             int32_t aPanelX, int32_t aPanelY,
                             nsString& aCommitted) override;

xpfe/appshell/nsWebShellWindow.cpp

@@ -71,6 +71,8 @@
 #include "mozilla/DebugOnly.h"
 #include "mozilla/MouseEvents.h"
 
+#include "nsPIWindowRoot.h"
+
 #ifdef XP_MACOSX
 #include "nsINativeMenuService.h"
 #define USE_NATIVE_MENUS
@@ -257,6 +259,15 @@ nsWebShellWindow::WindowMoved(nsIWidget* aWidget, int32_t x, int32_t y)
     pm->AdjustPopupsOnWindowChange(window);
   }
 
+  // Notify all tabs that the widget moved.
+  if (mDocShell && mDocShell->GetWindow()) {
+    nsCOMPtr<EventTarget> eventTarget = mDocShell->GetWindow()->GetTopWindowRoot();
+    nsContentUtils::DispatchChromeEvent(mDocShell->GetDocument(),
+                                        eventTarget,
+                                        NS_LITERAL_STRING("MozUpdateWindowPos"),
+                                        false, false, nullptr);
+  }
+
   // Persist position, but not immediately, in case this OS is firing
   // repeated move events as the user drags the window
   SetPersistenceTimer(PAD_POSITION);