1 files changed, 384 insertions, 0 deletions
diff --git a/dw/oofpositionedmgr.cc b/dw/oofpositionedmgr.cc
new file mode 100644
index 00000000..28852258
--- /dev/null
+++ b/dw/oofpositionedmgr.cc
@@ -0,0 +1,384 @@
+/*
+ * Dillo Widget
+ *
+ * Copyright 2013-2014 Sebastian Geerken <sgeerken@dillo.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "oofpositionedmgr.hh"
+#include "../lout/debug.hh"
+
+using namespace lout::object;
+using namespace lout::container::typed;
+using namespace lout::misc;
+using namespace dw::core;
+using namespace dw::core::style;
+
+namespace dw {
+
+namespace oof {
+
+OOFPositionedMgr::Child::Child (core::Widget *widget, OOFAwareWidget *generator,
+                                int externalIndex)
+{
+   this->widget = widget;
+   this->generator = generator;
+   this->externalIndex = externalIndex;
+   
+   x = y = 0;
+
+   // Initially, this child does not actually have been considered,
+   // but since adding a new element will force a size/extremes
+   // calculation, this is equivalent.
+   consideredForSize = consideredForExtremes = true;
+}
+
+OOFPositionedMgr::OOFPositionedMgr (OOFAwareWidget *container)
+{
+   DBG_OBJ_CREATE ("dw::OOFPositionedMgr");
+
+   this->container = (OOFAwareWidget*)container;
+   children = new Vector<Child> (1, false);
+   childrenByWidget = new HashTable<TypedPointer<Widget>, Child> (true, true);
+
+   containerAllocation = *(container->getAllocation());
+
+   DBG_OBJ_SET_NUM ("children.size", children->size());
+}
+
+OOFPositionedMgr::~OOFPositionedMgr ()
+{
+   delete children;
+   delete childrenByWidget;
+
+   DBG_OBJ_DELETE ();
+}
+
+void OOFPositionedMgr::sizeAllocateStart (OOFAwareWidget *caller,
+                                          Allocation *allocation)
+{
+   DBG_OBJ_ENTER ("resize.oofm", 0, "sizeAllocateStart",
+                  "%p, (%d, %d, %d * (%d + %d))",
+                  caller, allocation->x, allocation->y, allocation->width,
+                  allocation->ascent, allocation->descent);
+
+   if (caller == container) {
+      if (containerAllocationState == NOT_ALLOCATED)
+         containerAllocationState = IN_ALLOCATION;
+      containerAllocation = *allocation;
+   }
+
+   DBG_OBJ_LEAVE ();
+}
+
+
+void OOFPositionedMgr::sizeAllocateEnd (OOFAwareWidget *caller)
+{
+   DBG_OBJ_ENTER ("resize.oofm", 0, "sizeAllocateEnd", "%p", caller);
+
+   if (caller == container) {
+      sizeAllocateChildren ();
+
+      bool extremesChanged = !allChildrenConsideredForExtremes ();
+      if (extremesChanged || doChildrenExceedContainer () ||
+          !allChildrenConsideredForSize ())
+         container->oofSizeChanged (extremesChanged);
+      
+      containerAllocationState = WAS_ALLOCATED;
+   }
+
+   DBG_OBJ_LEAVE ();
+}
+
+bool OOFPositionedMgr::doChildrenExceedContainer ()
+{
+   DBG_OBJ_ENTER0 ("resize.oofm", 0, "doChildrenExceedContainer");
+
+   // This method is called to determine whether the *requisition* of
+   // the container must be recalculated. So, we check the allocations
+   // of the children against the *requisition* of the container,
+   // which may (e. g. within tables) differ from the new allocation.
+   // (Generally, a widget may allocated at a different size.)
+
+   Requisition containerReq;
+   container->sizeRequest (&containerReq);
+   bool exceeds = false;
+
+   DBG_OBJ_MSG_START ();
+
+   for (int i = 0; i < children->size () && !exceeds; i++) {
+      Child *child = children->get (i);
+      Allocation *childAlloc = child->widget->getAllocation ();
+      DBG_OBJ_MSGF ("resize.oofm", 2,
+                    "Does childAlloc = (%d, %d, %d * %d) exceed container "
+                    "alloc+req = (%d, %d, %d * %d)?",
+                    childAlloc->x, childAlloc->y, childAlloc->width,
+                    childAlloc->ascent + childAlloc->descent,
+                    containerAllocation.x, containerAllocation.y,
+                    containerReq.width,
+                    containerReq.ascent + containerReq.descent);
+      if (childAlloc->x + childAlloc->width
+          > containerAllocation.x + containerReq.width ||
+          childAlloc->y + childAlloc->ascent + childAlloc->descent
+          > containerAllocation.y +
+            containerReq.ascent + containerReq.descent) {
+         exceeds = true;
+         DBG_OBJ_MSG ("resize.oofm", 2, "Yes.");
+      } else
+         DBG_OBJ_MSG ("resize.oofm", 2, "No.");
+   }
+
+   DBG_OBJ_MSG_END ();
+
+   DBG_OBJ_MSGF ("resize.oofm", 1, "=> %s", exceeds ? "true" : "false");
+   DBG_OBJ_LEAVE ();
+
+   return exceeds;
+}
+
+void OOFPositionedMgr::containerSizeChangedForChildren ()
+{
+   DBG_OBJ_ENTER0 ("resize", 0, "containerSizeChangedForChildren");
+
+   for (int i = 0; i < children->size(); i++)
+      children->get(i)->widget->containerSizeChanged ();
+
+   DBG_OBJ_LEAVE ();
+}
+
+void OOFPositionedMgr::draw (View *view, Rectangle *area,
+                             DrawingContext *context)
+{
+   DBG_OBJ_ENTER ("draw", 0, "draw", "%d, %d, %d * %d",
+                  area->x, area->y, area->width, area->height);
+
+   for (int i = 0; i < children->size(); i++) {
+      Child *child = children->get(i);
+
+      Rectangle childArea;
+      if (!context->hasWidgetBeenProcessedAsInterruption (child->widget) &&
+          !StackingContextMgr::handledByStackingContextMgr (child->widget) &&
+          child->widget->intersects (container, area, &childArea))
+         child->widget->draw (view, &childArea, context);
+   }
+
+   DBG_OBJ_LEAVE ();
+}
+
+void OOFPositionedMgr::addWidgetInFlow (OOFAwareWidget *widget,
+                                        OOFAwareWidget *parent,
+                                        int externalIndex)
+{
+}
+
+int OOFPositionedMgr::addWidgetOOF (Widget *widget, OOFAwareWidget *generator,
+                                    int externalIndex)
+{
+   DBG_OBJ_ENTER ("construct.oofm", 0, "addWidgetOOF", "%p, %p, %d",
+                  widget, generator, externalIndex);
+
+   Child *child = new Child (widget, generator, externalIndex);
+   children->put (child);
+   childrenByWidget->put (new TypedPointer<Widget> (widget), child);
+
+   int subRef = children->size() - 1;
+   DBG_OBJ_SET_NUM ("children.size", children->size());
+   DBG_OBJ_ARRSET_PTR ("children", children->size() - 1, widget);
+
+   DBG_OBJ_SET_PTR_O (widget, "<Positioned>.generator", generator);
+   DBG_OBJ_SET_NUM_O (widget, "<Positioned>.externalIndex", externalIndex);
+
+   DBG_OBJ_MSGF ("construct.oofm", 1, "=> %d", subRef);
+   DBG_OBJ_LEAVE ();
+   return subRef;
+}
+
+void OOFPositionedMgr::moveExternalIndices (OOFAwareWidget *generator,
+                                            int oldStartIndex, int diff)
+{
+   for (int i = 0; i < children->size (); i++) {
+      Child *child = children->get (i);
+      if (child->externalIndex >= oldStartIndex) {
+         child->externalIndex += diff;
+         DBG_OBJ_SET_NUM_O (child->widget, "<Positioned>.externalIndex",
+                            child->externalIndex);
+      }
+   }
+}
+
+void OOFPositionedMgr::markSizeChange (int ref)
+{
+}
+
+
+void OOFPositionedMgr::markExtremesChange (int ref)
+{
+}
+
+Widget *OOFPositionedMgr::getWidgetAtPoint (int x, int y,
+                                            GettingWidgetAtPointContext
+                                            *context)
+{
+   DBG_OBJ_ENTER ("events", 0, "getWidgetAtPoint", "%d, %d", x, y);
+
+   Widget *widgetAtPoint = NULL;
+   
+   for (int i = children->size() - 1; widgetAtPoint == NULL && i >= 0; i--) {
+      Widget *childWidget = children->get(i)->widget;
+      if (!context->hasWidgetBeenProcessedAsInterruption (childWidget) &&
+          !StackingContextMgr::handledByStackingContextMgr (childWidget))
+         widgetAtPoint = childWidget->getWidgetAtPoint (x, y, context);
+   }
+
+   DBG_OBJ_MSGF ("events", 0, "=> %p", widgetAtPoint);
+   DBG_OBJ_LEAVE ();
+
+   return widgetAtPoint;
+}
+
+void OOFPositionedMgr::tellPosition1 (Widget *widget, int x, int y)
+{
+}
+
+void OOFPositionedMgr::tellPosition2 (Widget *widget, int x, int y)
+{
+   DBG_OBJ_ENTER ("resize.oofm", 0, "tellPosition2", "%p, %d, %d",
+                  widget, x, y);
+
+   TypedPointer<Widget> key (widget);
+   Child *child = childrenByWidget->get (&key);
+   assert (child);
+
+   child->x = x;
+   child->y = y;
+
+   DBG_OBJ_SET_NUM_O (child->widget, "<Positioned>.x", x);
+   DBG_OBJ_SET_NUM_O (child->widget, "<Positioned>.y", y);
+
+   DBG_OBJ_LEAVE ();
+}
+
+bool OOFPositionedMgr::containerMustAdjustExtraSpace ()
+{
+   return true;
+}
+
+int OOFPositionedMgr::getLeftBorder (OOFAwareWidget *widget, int y, int h,
+                                     OOFAwareWidget *lastGen, int lastExtIndex)
+{
+   return 0;
+}
+
+int OOFPositionedMgr::getRightBorder (OOFAwareWidget *widget, int y, int h,
+                                      OOFAwareWidget *lastGen, int lastExtIndex)
+{
+   return 0;
+}
+
+bool OOFPositionedMgr::hasFloatLeft (OOFAwareWidget *widget, int y, int h,
+                                     OOFAwareWidget *lastGen, int lastExtIndex)
+{
+   return false;
+}
+
+bool OOFPositionedMgr::hasFloatRight (OOFAwareWidget *widget, int y, int h,
+                                      OOFAwareWidget *lastGen, int lastExtIndex)
+{
+   return false;
+}
+
+
+int OOFPositionedMgr::getLeftFloatHeight (OOFAwareWidget *widget, int y, int h,
+                                          OOFAwareWidget *lastGen,
+                                          int lastExtIndex)
+{
+   return 0;
+}
+
+int OOFPositionedMgr::getRightFloatHeight (OOFAwareWidget *widget, int y, int h,
+                                           OOFAwareWidget *lastGen,
+                                           int lastExtIndex)
+{
+   return 0;
+}
+
+int OOFPositionedMgr::getClearPosition (OOFAwareWidget *widget)
+{
+   return 0;
+}
+
+bool OOFPositionedMgr::affectsLeftBorder (Widget *widget)
+{
+   return false;
+}
+
+bool OOFPositionedMgr::affectsRightBorder (Widget *widget)
+{
+   return false;
+}
+
+bool OOFPositionedMgr::mayAffectBordersAtAll ()
+{
+   return false;
+}
+
+bool OOFPositionedMgr::dealingWithSizeOfChild (Widget *child)
+{
+   return true;
+}
+
+int OOFPositionedMgr::getNumWidgets ()
+{
+   return children->size();
+}
+
+Widget *OOFPositionedMgr::getWidget (int i)
+{
+   return children->get(i)->widget;
+}
+
+bool OOFPositionedMgr::getPosBorder (style::Length cssValue, int refLength,
+                                     int *result)
+{
+   if (style::isAbsLength (cssValue)) {
+      *result = style::absLengthVal (cssValue);
+      return true;
+   }  else if (style::isPerLength (cssValue)) {
+      *result = style::multiplyWithPerLength (refLength, cssValue);
+      return true;
+   } else
+      // "false" means "undefined":
+      return false;
+}
+
+bool OOFPositionedMgr::allChildrenConsideredForSize ()
+{   
+   for (int i = 0; i < children->size(); i++)
+      if (!children->get(i)->consideredForSize)
+         return false;
+   return true;
+}
+
+bool OOFPositionedMgr::allChildrenConsideredForExtremes ()
+{   
+   for (int i = 0; i < children->size(); i++)
+      if (!children->get(i)->consideredForExtremes)
+         return false;
+   return true;
+}
+
+} // namespace oof
+
+} // namespace dw