X-Git-Url: https://git.quassel-irc.org/?p=quassel.git;a=blobdiff_plain;f=src%2Fqtui%2Fchatitem.cpp;h=051151c5e3a5566e662670515c05094be9224417;hp=c518c5fef35c7716d6f02caaa515aaad1075decd;hb=c95e8cea9060b25fa5115d19090b51f03290adc5;hpb=da2b5b2e4e2b0ea1847a0a5f0cb4a3752fc655c9

diff --git a/src/qtui/chatitem.cpp b/src/qtui/chatitem.cpp
index c518c5fe..051151c5 100644
--- a/src/qtui/chatitem.cpp
+++ b/src/qtui/chatitem.cpp
@@ -18,127 +18,318 @@
  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  ***************************************************************************/
 
+#include <QApplication>
+#include <QClipboard>
+#include <QDesktopServices>
 #include <QFontMetrics>
 #include <QGraphicsSceneMouseEvent>
-#include <QTextCursor>
-#include <QTextDocument>
-
-#include <QtGui>
+#include <QPainter>
+#include <QPalette>
+#include <QTextLayout>
 
 #include "chatitem.h"
+#include "chatlinemodel.h"
+#include "qtui.h"
 
-ChatItem::ChatItem(const QPersistentModelIndex &index_, QGraphicsItem *parent) : QGraphicsItem(parent), _index(index_) {
-  _width = _height = 0;
+ChatItem::ChatItem(int col, QAbstractItemModel *model, QGraphicsItem *parent)
+  : QGraphicsItem(parent),
+    _fontMetrics(0),
+    _col(col),
+    _lines(0),
+    _layout(0),
+    _selectionMode(NoSelection),
+    _selectionStart(-1)
+{
+  Q_ASSERT(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);
 }
 
 ChatItem::~ChatItem() {
-
+  delete _layout;
 }
 
 QVariant ChatItem::data(int role) const {
-  if(!_index.isValid()) {
-    qWarning() << "ChatItem::data(): Model index is invalid!" << _index;
+  QModelIndex index = model()->index(row(), column());
+  if(!index.isValid()) {
+    qWarning() << "ChatItem::data(): model index is invalid!" << index;
     return QVariant();
   }
-  return _index.data(role);
+  return model()->data(index, role);
 }
 
-QRectF ChatItem::boundingRect() const {
-  return QRectF(0, 0, _width, _height);
+qreal ChatItem::setGeometry(qreal w, qreal h) {
+  if(w == _boundingRect.width()) return _boundingRect.height();
+  prepareGeometryChange();
+  _boundingRect.setWidth(w);
+  if(h < 0) h = computeHeight();
+  _boundingRect.setHeight(h);
+  if(haveLayout()) updateLayout();
+  return h;
 }
 
-void ChatItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) {
-  Q_UNUSED(option); Q_UNUSED(widget);
+qreal ChatItem::computeHeight() {
+  if(data(ChatLineModel::ColumnTypeRole).toUInt() != ChatLineModel::ContentsColumn)
+    return fontMetrics()->lineSpacing(); // only contents can be multi-line
 
-  painter->drawText(boundingRect(), data(MessageModel::DisplayRole).toString());
-  painter->setPen(Qt::DotLine);
-  painter->drawRect(boundingRect());
+  _lines = 1;
+  WrapColumnFinder finder(this);
+  while(finder.nextWrapColumn() > 0) _lines++;
+  return _lines * fontMetrics()->lineSpacing();
 }
 
+QTextLayout *ChatItem::createLayout(QTextOption::WrapMode wrapMode, Qt::Alignment alignment) {
+  QTextLayout *layout = new QTextLayout(data(MessageModel::DisplayRole).toString());
 
+  QTextOption option;
+  option.setWrapMode(wrapMode);
+  option.setAlignment(alignment);
+  layout->setTextOption(option);
 
-int ChatItem::setWidth(int w) {
-  _width = w;
-  _height = 20; // FIXME
-  return _height;
+  QList<QTextLayout::FormatRange> formatRanges
+         = QtUi::style()->toTextLayoutList(data(MessageModel::FormatRole).value<UiStyle::FormatList>(), layout->text().length());
+  layout->setAdditionalFormats(formatRanges);
+  return layout;
 }
 
-/*
+void ChatItem::updateLayout() {
+  switch(data(ChatLineModel::ColumnTypeRole).toUInt()) {
+    case ChatLineModel::TimestampColumn:
+      if(!haveLayout()) _layout = createLayout(QTextOption::WrapAnywhere, Qt::AlignLeft);
+      // fallthrough
+    case ChatLineModel::SenderColumn:
+      if(!haveLayout()) _layout = createLayout(QTextOption::WrapAnywhere, Qt::AlignRight);
+      _layout->beginLayout();
+      {
+        QTextLine line = _layout->createLine();
+        if(line.isValid()) {
+          line.setLineWidth(width());
+          line.setPosition(QPointF(0,0));
+        }
+        _layout->endLayout();
+      }
+      break;
+    case ChatLineModel::ContentsColumn: {
+      if(!haveLayout()) _layout = createLayout(QTextOption::WrapAnywhere);
 
-void ChatItem::setTextOption(const QTextOption &option) {
-  _textOption = option;
-  layout();
-}
+      // Now layout
+      ChatLineModel::WrapList wrapList = data(ChatLineModel::WrapListRole).value<ChatLineModel::WrapList>();
+      if(!wrapList.count()) return; // empty chatitem
+
+      qreal h = 0;
+      WrapColumnFinder finder(this);
+      _layout->beginLayout();
+      forever {
+        QTextLine line = _layout->createLine();
+        if(!line.isValid())
+          break;
 
-QTextOption ChatItem::textOption() const {
-  return _textOption;
+        int col = finder.nextWrapColumn();
+        line.setNumColumns(col >= 0 ? col - line.textStart() : _layout->text().length());
+        line.setPosition(QPointF(0, h));
+        h += line.height() + fontMetrics()->leading();
+      }
+      _layout->endLayout();
+    }
+    break;
+  }
 }
 
-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);
-  layout();
+// NOTE: This is not the most time-efficient implementation, but it saves space by not caching unnecessary data
+//       This is a deliberate trade-off. (-> selectFmt creation, data() call)
+void ChatItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) {
+  Q_UNUSED(option); Q_UNUSED(widget);
+  if(!haveLayout()) updateLayout();
+  painter->setClipRect(boundingRect()); // no idea why QGraphicsItem clipping won't work
+  //if(_selectionMode == FullSelection) {
+    //painter->save();
+    //painter->fillRect(boundingRect(), QApplication::palette().brush(QPalette::Highlight));
+    //painter->restore();
+  //}
+  QVector<QTextLayout::FormatRange> formats;
+  if(_selectionMode != NoSelection) {
+    QTextLayout::FormatRange selectFmt;
+    selectFmt.format.setForeground(QApplication::palette().brush(QPalette::HighlightedText));
+    selectFmt.format.setBackground(QApplication::palette().brush(QPalette::Highlight));
+    if(_selectionMode == PartialSelection) {
+      selectFmt.start = qMin(_selectionStart, _selectionEnd);
+      selectFmt.length = qAbs(_selectionStart - _selectionEnd);
+    } else { // FullSelection
+      selectFmt.start = 0;
+      selectFmt.length = data(MessageModel::DisplayRole).toString().length();
+    }
+    formats.append(selectFmt);
+  }
+  _layout->draw(painter, QPointF(0,0), formats, boundingRect());
 }
 
-void ChatItem::layout() {
-  if(!_layout.additionalFormats().count()) return; // no text set
-  if(_width <= 0) return;
-  prepareGeometryChange();
-  QFontMetrics metrics(_layout.additionalFormats()[0].format.font());
-  int leading = metrics.leading();
-  int height = 0;
-  _layout.setTextOption(textOption());
-  _layout.beginLayout();
-  while(1) {
-    QTextLine line = _layout.createLine();
-    if(!line.isValid()) break;
-    line.setLineWidth(_width);
-    if(textOption().wrapMode() != QTextOption::NoWrap && line.naturalTextWidth() > _width) {
-      // word did not fit, we need to wrap it in the middle
-      // this is a workaround for Qt failing to handle WrapAtWordBoundaryOrAnywhere correctly
-      QTextOption::WrapMode mode = textOption().wrapMode();
-      textOption().setWrapMode(QTextOption::WrapAnywhere);
-      _layout.setTextOption(textOption());
-      line.setLineWidth(_width);
-      textOption().setWrapMode(mode);
-      _layout.setTextOption(textOption());
+qint16 ChatItem::posToCursor(const QPointF &pos) {
+  if(pos.y() > height()) return data(MessageModel::DisplayRole).toString().length();
+  if(pos.y() < 0) return 0;
+  if(!haveLayout()) updateLayout();
+  for(int l = _layout->lineCount() - 1; l >= 0; l--) {
+    QTextLine line = _layout->lineAt(l);
+    if(pos.y() >= line.y()) {
+      return line.xToCursor(pos.x(), QTextLine::CursorOnCharacter);
     }
-    height += leading;
-    line.setPosition(QPoint(0, height));
-    height += line.height();
   }
-  _layout.endLayout();
-  update();
-}    QDateTime _timestamp;
-    MsgId _msgId;
+  return 0;
+}
 
+void ChatItem::setFullSelection() {
+  if(_selectionMode != FullSelection) {
+    _selectionMode = FullSelection;
+    update();
+  }
+}
 
-QRectF ChatItem::boundingRect() const {
-  return _layout.boundingRect();
+void ChatItem::clearSelection() {
+  if(_selectionMode != NoSelection) {
+    _selectionMode = NoSelection;
+    update();
+  }
 }
 
-void ChatItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) {
-  Q_UNUSED(option); Q_UNUSED(widget);
-  _layout.draw(painter, QPointF(0, 0));
+void ChatItem::continueSelecting(const QPointF &pos) {
+  _selectionMode = PartialSelection;
+  _selectionEnd = posToCursor(pos);
+  update();
+}
 
+void ChatItem::mousePressEvent(QGraphicsSceneMouseEvent *event) {
+  if(event->buttons() == Qt::LeftButton) {
+    if(_selectionMode == NoSelection) {
+      chatScene()->setSelectingItem(this);  // removes earlier selection if exists
+      _selectionStart = _selectionEnd = posToCursor(event->pos());
+      //_selectionMode = PartialSelection;
+    } else {
+      chatScene()->setSelectingItem(0);
+      _selectionMode = NoSelection;
+      update();
+    }
+    event->accept();
+  } else {
+    event->ignore();
+  }
+}
+
+void ChatItem::mouseMoveEvent(QGraphicsSceneMouseEvent *event) {
+  if(event->buttons() == Qt::LeftButton) {
+    if(contains(event->pos())) {
+      qint16 end = posToCursor(event->pos());
+      if(end != _selectionEnd) {
+        _selectionEnd = end;
+        if(_selectionStart != _selectionEnd) _selectionMode = PartialSelection;
+        else _selectionMode = NoSelection;
+        update();
+      }
+    } else {
+      setFullSelection();
+      chatScene()->startGlobalSelection(this, event->pos());
+    }
+    event->accept();
+  } else {
+    event->ignore();
+  }
 }
-*/
 
-/*
-void ChatItem::mouseMoveEvent ( QGraphicsSceneMouseEvent * event ) {
-  qDebug() << (void*)this << "moving" << event->pos();
-  if(event->pos().y() < 0) {
-    QTextCursor cursor(document());
-    //cursor.insertText("foo");
-    //cursor.select(QTextCursor::Document);
+void ChatItem::mouseReleaseEvent(QGraphicsSceneMouseEvent *event) {
+  if(_selectionMode != NoSelection && !event->buttons() & Qt::LeftButton) {
+    _selectionEnd = posToCursor(event->pos());
+    QString selection
+        = data(MessageModel::DisplayRole).toString().mid(qMin(_selectionStart, _selectionEnd), qAbs(_selectionStart - _selectionEnd));
+    chatScene()->putToClipboard(selection);
+    event->accept();
+  } else {
     event->ignore();
-  } else QGraphicsTextItem::mouseMoveEvent(event);
+  }
+}
+
+void ChatItem::mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event) {
+  // FIXME dirty and fast hack to make http:// urls klickable
+
+  QRegExp regex("\\b([hf]t{1,2}ps?://[^\\s]+)\\b");
+  QString str = data(ChatLineModel::DisplayRole).toString();
+  int idx = posToCursor(event->pos());
+  int mi = 0;
+  do {
+    mi = regex.indexIn(str, mi);
+    if(mi < 0) break;
+    if(idx >= mi && idx < mi + regex.matchedLength()) {
+      QDesktopServices::openUrl(QUrl(regex.capturedTexts()[1]));
+      break;
+    }
+    mi += regex.matchedLength();
+  } while(mi >= 0);
+  event->accept();
+}
+
+void ChatItem::hoverEnterEvent(QGraphicsSceneHoverEvent *event) {
+  //qDebug() << (void*)this << "entering";
+  event->ignore();
+}
+
+void ChatItem::hoverLeaveEvent(QGraphicsSceneHoverEvent *event) {
+  //qDebug() << (void*)this << "leaving";
+  event->ignore();
 }
-*/
 
+void ChatItem::hoverMoveEvent(QGraphicsSceneHoverEvent *event) {
+  //qDebug() << (void*)this << event->pos();
+  event->ignore();
+}
+
+
+/*************************************************************************************************/
 
+ChatItem::WrapColumnFinder::WrapColumnFinder(ChatItem *_item) : item(_item) {
+  wrapList = item->data(ChatLineModel::WrapListRole).value<ChatLineModel::WrapList>();
+  wordidx = 0;
+  layout = 0;
+  lastwrapcol = 0;
+  lastwrappos = 0;
+  w = 0;
+}
+
+ChatItem::WrapColumnFinder::~WrapColumnFinder() {
+  delete layout;
+}
 
+qint16 ChatItem::WrapColumnFinder::nextWrapColumn() {
+  while(wordidx < wrapList.count()) {
+    w += wrapList.at(wordidx).width;
+    if(w >= item->width()) {
+      if(lastwrapcol >= wrapList.at(wordidx).start) {
+        // first word, and it doesn't fit
+        if(!line.isValid()) {
+          layout = item->createLayout(QTextOption::NoWrap);
+          layout->beginLayout();
+          line = layout->createLine();
+          line.setLineWidth(item->width());
+          layout->endLayout();
+        }
+        int idx = line.xToCursor(lastwrappos + item->width(), QTextLine::CursorOnCharacter);
+        qreal x = line.cursorToX(idx, QTextLine::Trailing);
+        w = w - wrapList.at(wordidx).width - (x - lastwrappos);
+        lastwrappos = x;
+        lastwrapcol = idx;
+        return idx;
+      }
+      // not the first word, so just wrap before this
+      lastwrapcol = wrapList.at(wordidx).start;
+      lastwrappos = lastwrappos + w - wrapList.at(wordidx).width;
+      w = 0;
+      return lastwrapcol;
+    }
+    w += wrapList.at(wordidx).trailing;
+    wordidx++;
+  }
+  return -1;
+}