fixing word wrap

[quassel.git] / src / qtui / chatitem.cpp

diff --git a/src/qtui/chatitem.cpp b/src/qtui/chatitem.cpp
index 495a97e..261182f 100644 (file)
--- a/src/qtui/chatitem.cpp
+++ b/src/qtui/chatitem.cpp
@@ -32,17 +32,13 @@
 #include "qtui.h"
 #include "qtuistyle.h"
 
-ChatItem::ChatItem(const qreal &width, const qreal &height, const QPointF &pos, ChatLineModel::ColumnType col, QGraphicsItem *parent)
+ChatItem::ChatItem(const qreal &width, const qreal &height, const QPointF &pos, QGraphicsItem *parent)
   : QGraphicsItem(parent),
     _data(0),
     _boundingRect(0, 0, width, height),
-    _fontMetrics(0),
     _selectionMode(NoSelection),
     _selectionStart(-1)
 {
-  const QAbstractItemModel *model_ = model();
-  QModelIndex index = model_->index(row(), col);
-  _fontMetrics = QtUi::style()->fontMetrics(model_->data(index, ChatLineModel::FormatRole).value<UiStyle::FormatList>().at(0).second);
   setAcceptHoverEvents(true);
   setZValue(20);
   setPos(pos);
@@ -185,17 +181,21 @@ QList<QRectF> ChatItem::findWords(const QString &searchWord, Qt::CaseSensitivity
     searchIdx = plainText.indexOf(searchWord, searchIdx + 1, caseSensitive);
   }
 
-  if(!hasLayout())
+  bool hadLayout = hasLayout();
+  if(!hadLayout)
     updateLayout();
 
   foreach(int idx, indexList) {
     QTextLine line = layout()->lineForTextPosition(idx);
     qreal x = line.cursorToX(idx);
     qreal width = line.cursorToX(idx + searchWord.count()) - x;
-    qreal height = fontMetrics()->lineSpacing();
+    qreal height = line.height();
     qreal y = height * line.lineNumber();
     resultList << QRectF(x, y, width, height);
   }
+
+  if(!hadLayout)
+    clearLayout();
   return resultList;
 }
 
@@ -250,8 +250,12 @@ void ChatItem::mouseReleaseEvent(QGraphicsSceneMouseEvent *event) {
 // ContentsChatItem
 // ************************************************************
 ContentsChatItem::ContentsChatItem(const qreal &width, const QPointF &pos, QGraphicsItem *parent)
-  : ChatItem(0, 0, pos, column(), parent)
+  : ChatItem(0, 0, pos, parent)
 {
+  const QAbstractItemModel *model_ = model();
+  QModelIndex index = model_->index(row(), column());
+  _fontMetrics = QtUi::style()->fontMetrics(model_->data(index, ChatLineModel::FormatRole).value<UiStyle::FormatList>().at(0).second);
+
   setGeometryByWidth(width);
 }
 
@@ -454,10 +458,10 @@ ContentsChatItem::WrapColumnFinder::WrapColumnFinder(ChatItem *_item)
     wrapList(item->data(ChatLineModel::WrapListRole).value<ChatLineModel::WrapList>()),
     wordidx(0),
     lineCount(0),
-    choppedTrailing(0),
-    lastwrapcol(0),
-    lastwrappos(0),
-    width(0)
+    choppedTrailing(0)
+//     lastwrapcol(0),
+//     lastwrappos(0),
+//     width(0)
 {
 }
 
@@ -476,25 +480,41 @@ qint16 ContentsChatItem::WrapColumnFinder::nextWrapColumn() {
   qint16 end = wrapList.count() - 1;
 
   // check if the whole line fits
-  if(wrapList.at(end).endX <= targetWidth || start == end)
+  if(wrapList.at(end).endX <= targetWidth) //  || start == end)
     return -1;
 
+  // check if we have a very long word that needs inter word wrap
+  if(wrapList.at(start).endX > targetWidth) {
+    if(!line.isValid()) {
+      layout = item->createLayout(QTextOption::NoWrap);
+      layout->beginLayout();
+      line = layout->createLine();
+      layout->endLayout();
+    }
+    return line.xToCursor(targetWidth, QTextLine::CursorOnCharacter);
+  }
+
   while(true) {
-    if(start == end) {
-      wordidx = start;
-      if(wordidx > 0) {
-       const ChatLineModel::Word &prevWord = wrapList.at(wordidx - 1);
-       choppedTrailing += prevWord.trailing - (targetWidth - prevWord.endX);
-      }
+    if(start + 1 == end) {
+      wordidx = end;
+      const ChatLineModel::Word &lastWord = wrapList.at(start); // the last word we were able to squeeze in
+
+      // both cases should be cought preliminary
+      Q_ASSERT(lastWord.endX <= targetWidth); // ensure that "start" really fits in
+      Q_ASSERT(end < wrapList.count()); // ensure that start isn't the last word
+
+      choppedTrailing += lastWord.trailing - (targetWidth - lastWord.endX);
       return wrapList.at(wordidx).start;
     }
+
     qint16 pivot = (end + start) / 2;
     if(wrapList.at(pivot).endX > targetWidth && wordidx != pivot) {
       end = pivot;
     } else {
-      start = pivot + 1;
+      start = pivot;
     }
   }
+  Q_ASSERT(false);
   return -1;
 }