Some work on textblock iterators related to floats.

1 files changed, 190 insertions, 82 deletions

diff --git a/dw/textblock_iterator.cc b/dw/textblock_iterator.cc
index 63720ffb..d3d8eda5 100644
--- a/dw/textblock_iterator.cc
+++ b/dw/textblock_iterator.cc
@@ -33,20 +33,34 @@ Textblock::TextblockIterator::TextblockIterator (Textblock *textblock,
                                                  bool atEnd):
    core::Iterator (textblock, mask, atEnd)
 {
-   index = atEnd ? textblock->words->size () : -1;
+   if (atEnd) {
+      if (textblock->outOfFlowMgr) {
+         oofm = true;
+         index = textblock->outOfFlowMgr->getNumWidgets();
+      } else {
+         oofm = false;
+         index = textblock->words->size();
+      }
+   } else {
+      oofm = false;
+      index = -1;
+   }
+
    content.type = atEnd ? core::Content::END : core::Content::START;
 }
 
 Textblock::TextblockIterator::TextblockIterator (Textblock *textblock,
                                                  core::Content::Type mask,
-                                                 int index):
+                                                 bool oofm, int index):
    core::Iterator (textblock, mask, false)
 {
+   this->oofm = oofm;
    this->index = index;
 
+   // TODO To be completely exact, oofm should be considered here.
    if (index < 0)
       content.type = core::Content::START;
-   else if (index >= textblock->words->size ())
+   else if (index >= textblock->words->size())
       content.type = core::Content::END;
    else
       content = textblock->words->getRef(index)->content;
@@ -54,12 +68,20 @@ Textblock::TextblockIterator::TextblockIterator (Textblock *textblock,
 
 object::Object *Textblock::TextblockIterator::clone()
 {
-   return new TextblockIterator ((Textblock*)getWidget(), getMask(), index);
+   return
+      new TextblockIterator ((Textblock*)getWidget(), getMask(), oofm, index);
 }
 
 int Textblock::TextblockIterator::compareTo(misc::Comparable *other)
 {
-   return index - ((TextblockIterator*)other)->index;
+   TextblockIterator *otherTI = (TextblockIterator*)other;
+
+   if (oofm && !otherTI->oofm)
+      return +1;
+   else if (!oofm && otherTI->oofm)
+      return -1;
+   else
+      return index - otherTI->index;
 }
 
 bool Textblock::TextblockIterator::next ()
@@ -69,15 +91,53 @@ bool Textblock::TextblockIterator::next ()
    if (content.type == core::Content::END)
       return false;
 
+   short type;
+
    do {
       index++;
-      if (index >= textblock->words->size ()) {
-         content.type = core::Content::END;
-         return false;
+
+      if (oofm) {
+         // Iterating over OOFM.
+         if (index >= textblock->outOfFlowMgr->getNumWidgets()) {
+            // End of OOFM list reached.
+            content.type = core::Content::END;
+            return false;
+         }
+         type = core::Content::WIDGET_OOF_CONT;
+      } else {
+         // Iterating over words list.
+         if (index < textblock->words->size ())
+            // Still words left.
+            type = textblock->words->getRef(index)->content.type;
+         else {
+            // End of words list reached.
+            if (textblock->outOfFlowMgr) {
+               oofm = true;
+               index = 0;
+               if (textblock->outOfFlowMgr->getNumWidgets() > 0)
+                  // Start with OOFM widgets.
+                  type = core::Content::WIDGET_OOF_CONT;
+               else {
+                  // No OOFM widgets (number is 0).
+                  content.type = core::Content::END;
+                  return false;
+               }
+            } else {
+               // No OOFM widgets (no OOFM agt all).
+               content.type = core::Content::END;
+               return false;
+            }
+         }
       }
-   } while ((textblock->words->getRef(index)->content.type & getMask()) == 0);
+   } while ((type & getMask()) == 0);
+
+   if (oofm) {
+      content.type = core::Content::WIDGET_OOF_CONT;
+      content.type = false;
+      content.widget = textblock->outOfFlowMgr->getWidget (index);
+   } else
+      content = textblock->words->getRef(index)->content;
 
-   content = textblock->words->getRef(index)->content;
    return true;
 }
 
@@ -88,70 +148,111 @@ bool Textblock::TextblockIterator::prev ()
    if (content.type == core::Content::START)
       return false;
 
+   short type;
+
    do {
       index--;
-      if (index < 0) {
-         content.type = core::Content::START;
-         return false;
+
+      if (oofm) {
+         // Iterating over OOFM.
+         if (index >= 0)
+            // Still widgets left.
+            type = core::Content::WIDGET_OOF_CONT;
+         else {
+            // Beginning of OOFM list reached. Continue with words.
+            oofm = false;
+            index = textblock->words->size() - 1;
+            if (index < 0) {
+               // There are no words. (Actually, this case should not
+               // happen: When there are OOF widgets, ther must be OOF
+               // references, or widgets in flow, which contain
+               // references.
+               content.type = core::Content::END;
+               return false;
+            }
+            type = textblock->words->getRef(index)->content.type;
+         }
+      } else {
+         // Iterating over words list.
+         if (index < 0) {
+            // Beginning of words list reached.
+            content.type = core::Content::START;
+            return false;
+         }
+         type = textblock->words->getRef(index)->content.type;
       }
-   } while ((textblock->words->getRef(index)->content.type & getMask()) == 0);
+   } while ((type & getMask()) == 0);
+
+   if (oofm) {
+      content.type = core::Content::WIDGET_OOF_CONT;
+      content.type = false;
+      content.widget = textblock->outOfFlowMgr->getWidget (index);
+   } else
+      content = textblock->words->getRef(index)->content;
 
-   content = textblock->words->getRef(index)->content;
    return true;
 }
 
 void Textblock::TextblockIterator::highlight (int start, int end,
                                               core::HighlightLayer layer)
 {
-   Textblock *textblock = (Textblock*)getWidget();
-   int index1 = index, index2 = index;
-
-   if (textblock->hlStart[layer].index > textblock->hlEnd[layer].index) {
-      /* nothing is highlighted */
-      textblock->hlStart[layer].index = index;
-      textblock->hlEnd[layer].index = index;
-   }
-
-   if (textblock->hlStart[layer].index >= index) {
-      index2 = textblock->hlStart[layer].index;
-      textblock->hlStart[layer].index = index;
-      textblock->hlStart[layer].nChar = start;
-   }
+   if (!oofm) {
+      Textblock *textblock = (Textblock*)getWidget();
+      int index1 = index, index2 = index;
+      
+      if (textblock->hlStart[layer].index > textblock->hlEnd[layer].index) {
+         /* nothing is highlighted */
+         textblock->hlStart[layer].index = index;
+         textblock->hlEnd[layer].index = index;
+      }
+      
+      if (textblock->hlStart[layer].index >= index) {
+         index2 = textblock->hlStart[layer].index;
+         textblock->hlStart[layer].index = index;
+         textblock->hlStart[layer].nChar = start;
+      }
+      
+      if (textblock->hlEnd[layer].index <= index) {
+         index2 = textblock->hlEnd[layer].index;
+         textblock->hlEnd[layer].index = index;
+         textblock->hlEnd[layer].nChar = end;
+      }
 
-   if (textblock->hlEnd[layer].index <= index) {
-      index2 = textblock->hlEnd[layer].index;
-      textblock->hlEnd[layer].index = index;
-      textblock->hlEnd[layer].nChar = end;
+      textblock->queueDrawRange (index1, index2);
    }
 
-   textblock->queueDrawRange (index1, index2);
+   // TODO What about OOF widgets?
 }
 
 void Textblock::TextblockIterator::unhighlight (int direction,
                                                 core::HighlightLayer layer)
 {
-   Textblock *textblock = (Textblock*)getWidget();
-   int index1 = index, index2 = index;
-
-   if (textblock->hlStart[layer].index > textblock->hlEnd[layer].index)
-      return;
-
-   if (direction == 0) {
-      index1 = textblock->hlStart[layer].index;
-      index2 = textblock->hlEnd[layer].index;
-      textblock->hlStart[layer].index = 1;
-      textblock->hlEnd[layer].index = 0;
-   } else if (direction > 0 && textblock->hlStart[layer].index <= index) {
-      index1 = textblock->hlStart[layer].index;
-      textblock->hlStart[layer].index = index + 1;
-      textblock->hlStart[layer].nChar = 0;
-   } else if (direction < 0 && textblock->hlEnd[layer].index >= index) {
-      index1 = textblock->hlEnd[layer].index;
-      textblock->hlEnd[layer].index = index - 1;
-      textblock->hlEnd[layer].nChar = INT_MAX;
+   if (!oofm) {
+      Textblock *textblock = (Textblock*)getWidget();
+      int index1 = index, index2 = index;
+      
+      if (textblock->hlStart[layer].index > textblock->hlEnd[layer].index)
+         return;
+      
+      if (direction == 0) {
+         index1 = textblock->hlStart[layer].index;
+         index2 = textblock->hlEnd[layer].index;
+         textblock->hlStart[layer].index = 1;
+         textblock->hlEnd[layer].index = 0;
+      } else if (direction > 0 && textblock->hlStart[layer].index <= index) {
+         index1 = textblock->hlStart[layer].index;
+         textblock->hlStart[layer].index = index + 1;
+         textblock->hlStart[layer].nChar = 0;
+      } else if (direction < 0 && textblock->hlEnd[layer].index >= index) {
+         index1 = textblock->hlEnd[layer].index;
+         textblock->hlEnd[layer].index = index - 1;
+         textblock->hlEnd[layer].nChar = INT_MAX;
+      }
+      
+      textblock->queueDrawRange (index1, index2);
    }
 
-   textblock->queueDrawRange (index1, index2);
+   // TODO What about OOF widgets?
 }
 
 void Textblock::queueDrawRange (int index1, int index2)
@@ -183,37 +284,44 @@ void Textblock::TextblockIterator::getAllocation (int start, int end,
                                                   core::Allocation *allocation)
 {
    Textblock *textblock = (Textblock*)getWidget();
-   int lineIndex = textblock->findLineOfWord (index);
-   Line *line = textblock->lines->getRef (lineIndex);
-   Word *word = textblock->words->getRef (index);
 
-   allocation->x =
-      textblock->allocation.x + textblock->lineXOffsetWidget (line);
-
-   for (int i = line->firstWord; i < index; i++) {
-      Word *w = textblock->words->getRef(i);
-      allocation->x += w->size.width + w->effSpace;
-   }
-   if (start > 0 && word->content.type == core::Content::TEXT) {
-      allocation->x += textblock->textWidth (word->content.text, 0, start,
-                                             word->style);
-   }
-   allocation->y = textblock->lineYOffsetCanvas (line) + line->boxAscent -
-                   word->size.ascent;
-
-   allocation->width = word->size.width;
-   if (word->content.type == core::Content::TEXT) {
-      int wordEnd = strlen(word->content.text);
-
-      if (start > 0 || end < wordEnd) {
-         end = misc::min(end, wordEnd); /* end could be INT_MAX */
-         allocation->width =
-            textblock->textWidth (word->content.text, start, end - start,
-                                  word->style);
+   if (oofm) {
+      // TODO Consider start and end?
+      *allocation =
+         *(textblock->outOfFlowMgr->getWidget(index)->getAllocation());
+   } else {
+      int lineIndex = textblock->findLineOfWord (index);
+      Line *line = textblock->lines->getRef (lineIndex);
+      Word *word = textblock->words->getRef (index);
+      
+      allocation->x =
+         textblock->allocation.x + textblock->lineXOffsetWidget (line);
+      
+      for (int i = line->firstWord; i < index; i++) {
+         Word *w = textblock->words->getRef(i);
+         allocation->x += w->size.width + w->effSpace;
+      }
+      if (start > 0 && word->content.type == core::Content::TEXT) {
+         allocation->x += textblock->textWidth (word->content.text, 0, start,
+                                                word->style);
+      }
+      allocation->y = textblock->lineYOffsetCanvas (line) + line->boxAscent -
+         word->size.ascent;
+      
+      allocation->width = word->size.width;
+      if (word->content.type == core::Content::TEXT) {
+         int wordEnd = strlen(word->content.text);
+         
+         if (start > 0 || end < wordEnd) {
+            end = misc::min(end, wordEnd); /* end could be INT_MAX */
+            allocation->width =
+               textblock->textWidth (word->content.text, start, end - start,
+                                     word->style);
+         }
       }
+      allocation->ascent = word->size.ascent;
+      allocation->descent = word->size.descent;
    }
-   allocation->ascent = word->size.ascent;
-   allocation->descent = word->size.descent;
 }
 
 } // namespace dw