Bug 627974 - panels that aren't toplevel shouldn't overlap the taskbar, r=Enn
authorGijs Kruitbosch <gijskruitbosch@gmail.com>
Fri, 07 Feb 2014 17:35:09 +0000
changeset 167570 95fc024ee46d9aa52072df720fd8c08223a11984
parent 167569 59230a163ec0852cb6c594fa4ca52d52387b9a44
child 167571 1bf0b04301caa1142c06f9b31629594c6ac01dfb
push id26174
push userkwierso@gmail.com
push dateSat, 08 Feb 2014 00:55:48 +0000
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Bug 627974 - panels that aren't toplevel shouldn't overlap the taskbar, r=Enn
--- a/layout/xul/nsMenuPopupFrame.cpp
+++ b/layout/xul/nsMenuPopupFrame.cpp
@@ -1193,16 +1193,19 @@ nsMenuPopupFrame::SetPopupPosition(nsIFr
   // the screen rectangle of the root frame, in dev pixels.
   nsRect rootScreenRect = rootFrame->GetScreenRectInAppUnits();
   nsDeviceContext* devContext = presContext->DeviceContext();
   nscoord offsetForContextMenu = 0;
+  bool isNoAutoHide = IsNoAutoHide();
+  nsPopupLevel popupLevel = PopupLevel(isNoAutoHide);
   if (IsAnchored()) {
     // if we are anchored, there are certain things we don't want to do when
     // repositioning the popup to fit on the screen, such as end up positioned
     // over the anchor, for instance a popup appearing over the menu label.
     // When doing this reposition, we want to move the popup to the side with
     // the most room. The combination of anchor and alignment dictate if we 
     // readjust above/below or to the left/right.
     if (mAnchorContent) {
@@ -1233,17 +1236,17 @@ nsMenuPopupFrame::SetPopupPosition(nsIFr
     screenPoint.y += anchorYOffset;
     anchorRect.y += anchorYOffset;
     // If this is a noautohide popup, set the screen coordinates of the popup.
     // This way, the popup stays at the location where it was opened even when
     // the window is moved. Popups at the parent level follow the parent
     // window as it is moved and remained anchored, so we want to maintain the
     // anchoring instead.
-    if (IsNoAutoHide() && PopupLevel(true) != ePopupLevelParent) {
+    if (isNoAutoHide && popupLevel != ePopupLevelParent) {
       // Account for the margin that will end up being added to the screen coordinate
       // the next time SetPopupPosition is called.
       mScreenXPos = presContext->AppUnitsToIntCSSPixels(screenPoint.x - margin.left);
       mScreenYPos = presContext->AppUnitsToIntCSSPixels(screenPoint.y - margin.top);
   else {
     // the popup is positioned at a screen coordinate.
@@ -1274,17 +1277,17 @@ nsMenuPopupFrame::SetPopupPosition(nsIFr
     // screen positioned popups can be flipped vertically but never horizontally
     vFlip = FlipStyle_Outside;
   // If a panel is being moved or has flip="none", don't constrain or flip it. But always do this for
   // content shells, so that the popup doesn't extend outside the containing frame.
   if (mInContentShell || (mFlip != FlipType_None && (!aIsMove || mPopupType != ePopupTypePanel))) {
-    nsRect screenRect = GetConstraintRect(anchorRect, rootScreenRect);
+    nsRect screenRect = GetConstraintRect(anchorRect, rootScreenRect, popupLevel);
     // Ensure that anchorRect is on screen.
     anchorRect = anchorRect.Intersect(screenRect);
     // shrink the the popup down if it is larger than the screen size
     if (mRect.width > screenRect.width)
       mRect.width = screenRect.width;
     if (mRect.height > screenRect.height)
@@ -1373,17 +1376,18 @@ nsMenuPopupFrame::SetPopupPosition(nsIFr
 /* virtual */ nsMenuFrame*
   return mCurrentMenu;
 nsMenuPopupFrame::GetConstraintRect(const nsRect& aAnchorRect,
-                                    const nsRect& aRootScreenRect)
+                                    const nsRect& aRootScreenRect,
+                                    nsPopupLevel aPopupLevel)
   nsIntRect screenRectPixels;
   nsPresContext* presContext = PresContext();
   // determine the available screen space. It will be reduced by the OS chrome
   // such as menubars. It addition, for content shells, it will be the area of
   // the content rather than the screen.
   nsCOMPtr<nsIScreen> screen;
@@ -1396,18 +1400,21 @@ nsMenuPopupFrame::GetConstraintRect(cons
     nsRect rect = mInContentShell ? aRootScreenRect : aAnchorRect;
     // nsIScreenManager::ScreenForRect wants the coordinates in CSS pixels
     int32_t width = std::max(1, nsPresContext::AppUnitsToIntCSSPixels(rect.width));
     int32_t height = std::max(1, nsPresContext::AppUnitsToIntCSSPixels(rect.height));
                       width, height, getter_AddRefs(screen));
     if (screen) {
+      // Non-top-level popups (which will always be panels)
+      // should never overlap the OS bar:
+      bool dontOverlapOSBar = aPopupLevel != ePopupLevelTop;
       // get the total screen area if the popup is allowed to overlap it.
-      if (mMenuCanOverlapOSBar && !mInContentShell)
+      if (!dontOverlapOSBar && mMenuCanOverlapOSBar && !mInContentShell)
         screen->GetRect(&screenRectPixels.x, &screenRectPixels.y,
                         &screenRectPixels.width, &screenRectPixels.height);
         screen->GetAvailRect(&screenRectPixels.x, &screenRectPixels.y,
                              &screenRectPixels.width, &screenRectPixels.height);
--- a/layout/xul/nsMenuPopupFrame.h
+++ b/layout/xul/nsMenuPopupFrame.h
@@ -305,17 +305,21 @@ public:
   nsIScrollableFrame* GetScrollFrame(nsIFrame* aStart);
   // For a popup that should appear anchored at the given rect, determine
   // the screen area that it is constrained by. This will be the available
   // area of the screen the popup should be displayed on. Content popups,
   // however, will also be constrained by the content area, given by
   // aRootScreenRect. All coordinates are in app units.
-  nsRect GetConstraintRect(const nsRect& aAnchorRect, const nsRect& aRootScreenRect);
+  // For non-toplevel popups (which will always be panels), we will also
+  // constrain them to the available screen rect, ie they will not fall
+  // underneath the taskbar, dock or other fixed OS elements.
+  nsRect GetConstraintRect(const nsRect& aAnchorRect, const nsRect& aRootScreenRect,
+                           nsPopupLevel aPopupLevel);
   // Determines whether the given edges of the popup may be moved, where
   // aHorizontalSide and aVerticalSide are one of the NS_SIDE_* constants, or
   // 0 for no movement in that direction. aChange is the distance to move on
   // those sides. If will be reset to 0 if the side cannot be adjusted at all
   // in that direction. For example, a popup cannot be moved if it is anchored
   // on a particular side.
--- a/layout/xul/nsResizerFrame.cpp
+++ b/layout/xul/nsResizerFrame.cpp
@@ -219,17 +219,18 @@ nsResizerFrame::HandleEvent(nsPresContex
       else if (menuPopupFrame) {
         nsRect frameRect = menuPopupFrame->GetScreenRectInAppUnits();
         nsIFrame* rootFrame = aPresContext->PresShell()->FrameManager()->GetRootFrame();
         nsRect rootScreenRect = rootFrame->GetScreenRectInAppUnits();
-        nsRect screenRect = menuPopupFrame->GetConstraintRect(frameRect, rootScreenRect);
+        nsPopupLevel popupLevel = menuPopupFrame->PopupLevel();
+        nsRect screenRect = menuPopupFrame->GetConstraintRect(frameRect, rootScreenRect, popupLevel);
         // round using ToInsidePixels as it's better to be a pixel too small
         // than be too large. If the popup is too large it could get flipped
         // to the opposite side of the anchor point while resizing.
         nsIntRect screenRectPixels = screenRect.ToInsidePixels(aPresContext->AppUnitsPerDevPixel());
         rect.IntersectRect(rect, screenRectPixels);
       if (contentToResize) {