1 files changed, 31 insertions, 9 deletions

diff --git a/dw/widget.hh b/dw/widget.hh
index 0f3e2d37..4ad397ee 100644
--- a/dw/widget.hh
+++ b/dw/widget.hh
@@ -180,19 +180,36 @@ protected:
    Allocation allocation;
 
    inline int getHeight () { return allocation.ascent + allocation.descent; }
-   inline int getContentWidth() { return allocation.width
-                                     - style->boxDiffWidth (); }
-   inline int getContentHeight() { return getHeight ()
-                                      - style->boxDiffHeight (); }
+   inline int getContentWidth() { return allocation.width - boxDiffWidth (); }
+   inline int getContentHeight() { return getHeight () - boxDiffHeight (); }
 
    Layout *layout;
 
    /**
     * \brief Space around the margin box. Allocation is extraSpace +
-    *    margin + border + padding + contents;
+    *    margin + border + padding + contents.
+    *
+    * See also dw::core::Widget::calcExtraSpace and
+    * dw::core::Widget::calcExtraSpaceImpl. Also, it is feasible to
+    * correct this value within dw::core::Widget::sizeRequestImpl.
     */
    style::Box extraSpace;
 
+   /**
+    * \brief Set iff this widget constitutes a stacking context, as defined by
+    *    CSS.
+    */
+   StackingContextMgr *stackingContextMgr;
+
+   /**
+    * \brief The bottom-most ancestor (or this) for which stackingContextMgr is
+    *    set.
+    */
+   Widget *stackingContextWidget;
+
+   inline StackingContextMgr *getNextStackingContextMgr ()
+   { return stackingContextWidget->stackingContextMgr; }
+
    /*inline void printFlags () {
       DBG_IF_RTFL {
          char buf[10 * 3 - 1 + 1];
@@ -254,7 +271,6 @@ protected:
    inline void unsetFlags (Flags f)
    { flags = (Flags)(flags & ~f); printFlag (f); }
 
-
    inline void queueDraw ()
    { queueDrawArea (0, 0, allocation.width, getHeight()); }
    void queueDrawArea (int x, int y, int width, int height);
@@ -271,6 +287,8 @@ protected:
     */
    virtual void getExtremesImpl (Extremes *extremes) = 0;
 
+   virtual void calcExtraSpaceImpl ();
+
    /**
     * \brief See \ref dw-widget-sizes.
     */
@@ -292,8 +310,6 @@ protected:
     */
    virtual void markExtremesChange (int ref);
 
-   int getMinWidth (Extremes *extremes, bool forceValue);
-
    virtual int getAvailWidthOfChild (Widget *child, bool forceValue);
    virtual int getAvailHeightOfChild (Widget *child, bool forceValue);
    virtual void correctRequisitionOfChild (Widget *child,
@@ -425,6 +441,8 @@ public:
    void getExtremes (Extremes *extremes);
    void sizeAllocate (Allocation *allocation);
 
+   void calcExtraSpace ();
+
    int getAvailWidth (bool forceValue);
    int getAvailHeight (bool forceValue);
    virtual bool getAdjustMinWidth () { return Widget::adjustMinWidth; }
@@ -441,6 +459,8 @@ public:
    virtual int applyPerWidth (int containerWidth, style::Length perWidth);
    virtual int applyPerHeight (int containerHeight, style::Length perHeight);
 
+   int getMinWidth (Extremes *extremes, bool forceValue);
+
    virtual bool isBlockLevel ();
    virtual bool isPossibleContainer ();
 
@@ -480,11 +500,13 @@ public:
 
    inline Layout *getLayout () { return layout; }
 
-   virtual Widget *getWidgetAtPoint (int x, int y, int level);
+   virtual Widget *getWidgetAtPoint (int x, int y);
 
    void scrollTo (HPosition hpos, VPosition vpos,
                   int x, int y, int width, int height);
 
+   void getMarginArea (int *xMar, int *yMar, int *widthMar, int *heightMar);
+   void getBorderArea (int *xBor, int *yBor, int *widthBor, int *heightBor);
    void getPaddingArea (int *xPad, int *yPad, int *widthPad, int *heightPad);
 
    /**