From e497d315b87a42184dce3f9b90e495b3a3806b14 Mon Sep 17 00:00:00 2001
From: Sebastian Geerken <devnull@localhost>
Date: Fri, 23 Jan 2015 21:28:59 +0100
Subject: StackingProcessingContext, GettingWidgetAtPointContext.

---
 dw/ooffloatsmgr.cc     |  2 +-
 dw/oofpositionedmgr.cc |  2 +-
 dw/types.hh            | 55 +++++++++++++++++++++++++++++++++++++-------------
 dw/widget.cc           |  2 +-
 4 files changed, 44 insertions(+), 17 deletions(-)

diff --git a/dw/ooffloatsmgr.cc b/dw/ooffloatsmgr.cc
index f9e7b0d0..5f0d9eff 100644
--- a/dw/ooffloatsmgr.cc
+++ b/dw/ooffloatsmgr.cc
@@ -1315,7 +1315,7 @@ void OOFFloatsMgr::drawFloats (SortedFloatsVector *list, View *view,
       Widget *childWidget = vloat->getWidget ();
      
       Rectangle childArea;
-      if (!context->hasWidgetBeenDrawnAsInterruption (childWidget) &&
+      if (!context->hasWidgetBeenProcessedAsInterruption (childWidget) &&
          !StackingContextMgr::handledByStackingContextMgr (childWidget) &&
           childWidget->intersects (container, area, &childArea))
          childWidget->draw (view, &childArea, context);
diff --git a/dw/oofpositionedmgr.cc b/dw/oofpositionedmgr.cc
index 28d5aac7..10c48b1e 100644
--- a/dw/oofpositionedmgr.cc
+++ b/dw/oofpositionedmgr.cc
@@ -225,7 +225,7 @@ void OOFPositionedMgr::draw (View *view, Rectangle *area,
       Child *child = children->get(i);
 
       Rectangle childArea;
-      if (!context->hasWidgetBeenDrawnAsInterruption (child->widget) &&
+      if (!context->hasWidgetBeenProcessedAsInterruption (child->widget) &&
           !StackingContextMgr::handledByStackingContextMgr (child->widget) &&
           child->widget->intersects (container, area, &childArea))
          child->widget->draw (view, &childArea, context);
diff --git a/dw/types.hh b/dw/types.hh
index c68ad781..481f4804 100644
--- a/dw/types.hh
+++ b/dw/types.hh
@@ -238,37 +238,64 @@ struct Content
 };
 
 /**
- * Set at the top when drawing. See \ref dw-interrupted-drawing for details.
+ * \brief Base class for dw::core::DrawingContext and
+ *    dw::core::GettingWidgetAtPointContext.
+ *
+ * Not to be confused with the *stacking context* as defined by CSS.
  */
-class DrawingContext
+class StackingProcessingContext
 {
 private:
-   Rectangle toplevelArea;
    lout::container::typed::HashSet<lout::object::TypedPointer<Widget> >
-      *widgetsDrawnAsInterruption;
+      *widgetsProcessedAsInterruption;
 
 public:
-   inline DrawingContext (Rectangle *toplevelArea) {
-      this->toplevelArea = *toplevelArea;
-      widgetsDrawnAsInterruption =
+   inline StackingProcessingContext () {
+      widgetsProcessedAsInterruption =
          new lout::container::typed::HashSet<lout::object::
                                              TypedPointer<Widget> > (true);
    }
    
-   inline ~DrawingContext () { delete widgetsDrawnAsInterruption; }
+   inline ~StackingProcessingContext ()
+   { delete widgetsProcessedAsInterruption; }
 
-   inline Rectangle *getToplevelArea () { return &toplevelArea; }
-
-   inline bool hasWidgetBeenDrawnAsInterruption (Widget *widget) {
+   inline bool hasWidgetBeenProcessedAsInterruption (Widget *widget) {
       lout::object::TypedPointer<Widget> key (widget);
-      return widgetsDrawnAsInterruption->contains (&key);
+      return widgetsProcessedAsInterruption->contains (&key);
    }
 
-   inline void addWidgetDrawnAsInterruption (Widget *widget) {
+   inline void addWidgetProcessedAsInterruption (Widget *widget) {
       lout::object::TypedPointer<Widget> *key =
          new lout::object::TypedPointer<Widget> (widget);
-      return widgetsDrawnAsInterruption->put (key);
+      return widgetsProcessedAsInterruption->put (key);
+   }
+};
+
+/**
+ * \brief Set at the top when drawing.
+ *
+ * See \ref dw-interrupted-drawing for details.
+ */
+class DrawingContext: public StackingProcessingContext
+{
+private:
+   Rectangle toplevelArea;
+
+public:
+   inline DrawingContext (Rectangle *toplevelArea) {
+      this->toplevelArea = *toplevelArea;
    }
+   
+   inline Rectangle *getToplevelArea () { return &toplevelArea; }
+};
+
+/**
+ * \brief Set at the top when getting the widget at the point.
+ *
+ * Similar to dw::core::DrawingContext.
+ */
+class GettingWidgetAtPointContext: public StackingProcessingContext
+{
 };
 
 } // namespace core
diff --git a/dw/widget.cc b/dw/widget.cc
index 9188f997..00ce8d97 100644
--- a/dw/widget.cc
+++ b/dw/widget.cc
@@ -200,7 +200,7 @@ void Widget::drawInterruption (View *view, Rectangle *area,
    if (intersects (layout->topLevel, context->getToplevelArea (), &thisArea))
       draw (view, &thisArea, context);
 
-   context->addWidgetDrawnAsInterruption (this);
+   context->addWidgetProcessedAsInterruption (this);
 }
 
 Widget *Widget::getWidgetAtPoint (int x, int y,
-- 
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