X-Git-Url: https://git.quassel-irc.org/?p=quassel.git;a=blobdiff_plain;f=src%2Fqtui%2Fchatitem.cpp;h=ff81259cfa385645df3f09b3efa2fd7f2f7c87ce;hp=7c0cc9a6a375e7345260c524f012a4126fd4a573;hb=209c692cb560ba979442d2f75ed08b4f6adf3120;hpb=0b9f74984780aacbe85ca04c44ec6304c86557c2

diff --git a/src/qtui/chatitem.cpp b/src/qtui/chatitem.cpp
index 7c0cc9a6..ff81259c 100644
--- a/src/qtui/chatitem.cpp
+++ b/src/qtui/chatitem.cpp
@@ -20,18 +20,17 @@
 
 #include <QFontMetrics>
 #include <QGraphicsSceneMouseEvent>
-#include <QTextCursor>
-#include <QTextDocument>
-
-#include <QtGui>
+#include <QPainter>
+#include <QTextLayout>
 
 #include "chatitem.h"
+#include "chatlinemodel.h"
+#include "qtui.h"
 
 ChatItem::ChatItem(const QPersistentModelIndex &index_, QGraphicsItem *parent) : QGraphicsItem(parent), _index(index_) {
-  //if(_wrapMode == WordWrap) {
-  //  setFlags(QGraphicsItem::ItemClipsToShape, true);
-  //}
-  
+  _fontMetrics = QtUi::style()->fontMetrics(data(ChatLineModel::FormatRole).value<UiStyle::FormatList>().at(0).second);
+  _layout = 0;
+  _lines = 0;
 }
 
 ChatItem::~ChatItem() {
@@ -40,49 +39,138 @@ ChatItem::~ChatItem() {
 
 QVariant ChatItem::data(int role) const {
   if(!_index.isValid()) {
-    qWarning() << "ChatItem::data(): Model index is invalid!";
+    qWarning() << "ChatItem::data(): Model index is invalid!" << _index;
     return QVariant();
   }
   return _index.data(role);
 }
 
-QRectF ChatItem::boundingRect() const {
-  return QRectF(0, 0, 500,20);
+int ChatItem::setWidth(int w) {
+  w -= 10;
+  if(w == _boundingRect.width()) return _boundingRect.height();
+  int h = heightForWidth(w);
+  _boundingRect.setWidth(w);
+  _boundingRect.setHeight(h);
+  if(haveLayout()) updateLayout();
+  return h;
 }
 
-void ChatItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) {
-  Q_UNUSED(option); Q_UNUSED(widget);
-
-  painter->drawRect(boundingRect());
-  painter->drawText(boundingRect(), data(MessageModel::DisplayRole).toString());
+int ChatItem::heightForWidth(int width) {
+  if(data(ChatLineModel::ColumnTypeRole).toUInt() != ChatLineModel::ContentsColumn)
+    return fontMetrics()->lineSpacing(); // only contents can be multi-line
+
+  ChatLineModel::WrapList wrapList = data(ChatLineModel::WrapListRole).value<ChatLineModel::WrapList>();
+  _lines = 1;
+  qreal w = 0;
+  for(int i = 0; i < wrapList.count(); i++) {
+    w += wrapList.at(i).width;
+    if(w <= width) {
+      w += wrapList.at(i).trailing;
+      continue;
+    }
+    _lines++;
+    w = wrapList.at(i).width;
+    while(w >= width) {  // handle words longer than a line
+      _lines++;
+      // We do not want to compute an exact split position (that would require us to calculate glyph widths
+      // and also apply formats in this step...)
+      // Just using width should be a good estimate, but since a character can't be split in the middle, we
+      // subtract averageCharWidth as well... sometimes this won't be enough, but meh.
+      w -= width - 4*fontMetrics()->averageCharWidth();
+    }
+  }
+  return _lines * fontMetrics()->lineSpacing();
 }
 
-
-/*
-void ChatItem::setWidth(int w) {
-  _width = w;
-  layout();
+void ChatItem::layout() {
+  if(haveLayout()) return;
+  _layout = new QTextLayout(data(MessageModel::DisplayRole).toString());
+
+  QTextOption option;
+  option.setWrapMode(QTextOption::WrapAnywhere);
+  _layout->setTextOption(option);
+
+  // Convert format information into a FormatRange
+  QList<QTextLayout::FormatRange> formatRanges;
+  UiStyle::FormatList formatList = data(MessageModel::FormatRole).value<UiStyle::FormatList>();
+  QTextLayout::FormatRange range;
+  int i = 0;
+  for(i = 0; i < formatList.count(); i++) {
+    range.format = QtUi::style()->mergedFormat(formatList.at(i).second);
+    range.start = formatList.at(i).first;
+    if(i > 0) formatRanges.last().length = range.start - formatRanges.last().start;
+    formatRanges.append(range);
+  }
+  if(i > 0) formatRanges.last().length = _layout->text().length() - formatRanges.last().start;
+  _layout->setAdditionalFormats(formatRanges);
+  updateLayout();
 }
 
-void ChatItem::setTextOption(const QTextOption &option) {
-  _textOption = option;
-  layout();
-}
+void ChatItem::updateLayout() {
+  if(!haveLayout()) layout();
+
+  // Now layout
+  ChatLineModel::WrapList wrapList = data(ChatLineModel::WrapListRole).value<ChatLineModel::WrapList>();
+  if(!wrapList.count()) return; // empty chatitem
+  int wordidx = 0;
+  ChatLineModel::Word word = wrapList.at(0);
+
+  qreal h = 0;
+  _layout->beginLayout();
+  forever {
+    QTextLine line = _layout->createLine();
+    if (!line.isValid())
+      break;
+
+    if(word.width >= width()) {
+      line.setLineWidth(width());
+      word.width -= line.naturalTextWidth();
+      word.start = line.textStart() + line.textLength();
+      //qDebug() << "setting width: " << width();
+    } else {
+      int w = 0;
+      while((w += word.width) <= width() && wordidx < wrapList.count()) {
+        w += word.trailing;
+        if(++wordidx < wrapList.count()) word = wrapList.at(wordidx);
+        else {
+          // last word (and it fits), but if we expected an extra line, wrap anyway here
+          // yeah, this is cheating, but much cheaper than computing widths ourself
+          if(_layout->lineCount() < _lines) {
+            wordidx--; qDebug() << "trigger!" << _lines << _layout->text();
+            break;
+          }
+        }
+      }
+      int lastcol = wordidx < wrapList.count() ? word.start : _layout->text().length();
+      line.setNumColumns(lastcol - line.textStart());// qDebug() << "setting cols:" << lastcol - line.textStart();
+    }
 
-QTextOption ChatItem::textOption() const {
-  return _textOption;
+    h += fontMetrics()->leading();
+    line.setPosition(QPointF(0, h));
+    h += line.height();
+  }
+  _layout->endLayout();
 }
 
-QString ChatItem::text() const {
-  return _layout.text();
+void ChatItem::clearLayout() {
+  delete _layout;
+  _layout = 0;
 }
 
-void ChatItem::setText(const UiStyle::StyledText &text) {
-  _layout.setText(text.text);
-  _layout.setAdditionalFormats(text.formatList);
+void ChatItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) {
+  Q_UNUSED(option); Q_UNUSED(widget);
   layout();
+  _layout->draw(painter, QPointF(0,0), QVector<QTextLayout::FormatRange>(), boundingRect());
+  painter->drawRect(boundingRect());
+  int width = 0;
+  QVariantList wrapList = data(ChatLineModel::WrapListRole).toList();
+  for(int i = 2; i < wrapList.count(); i+=2) {
+    QRect r(wrapList[i-1].toUInt(), 0, wrapList[i+1].toUInt() - wrapList[i-1].toUInt(), fontMetrics()->lineSpacing());
+    painter->drawRect(r);
+  }
 }
 
+/*
 void ChatItem::layout() {
   if(!_layout.additionalFormats().count()) return; // no text set
   if(_width <= 0) return;
@@ -138,6 +226,3 @@ void ChatItem::mouseMoveEvent ( QGraphicsSceneMouseEvent * event ) {
   } else QGraphicsTextItem::mouseMoveEvent(event);
 }
 */
-
-
-