X-Git-Url: https://git.quassel-irc.org/?p=quassel.git;a=blobdiff_plain;f=src%2Fqtui%2Fchatitem.cpp;h=5d1bcb7a6063b93dfc41110bc93e3e408b48c1ea;hp=dfb069eafeb656a671b6de324cdfba2a931e16e2;hb=ae374ec02b44f508d207d2e69d800f26b34e0d9d;hpb=fbb96765b7039d74a2adaa0d17ed61ee64505786

diff --git a/src/qtui/chatitem.cpp b/src/qtui/chatitem.cpp
index dfb069ea..5d1bcb7a 100644
--- a/src/qtui/chatitem.cpp
+++ b/src/qtui/chatitem.cpp
@@ -18,9 +18,12 @@
  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  ***************************************************************************/
 
+#include <QApplication>
+#include <QClipboard>
 #include <QFontMetrics>
 #include <QGraphicsSceneMouseEvent>
 #include <QPainter>
+#include <QPalette>
 #include <QTextLayout>
 
 #include "chatitem.h"
@@ -31,6 +34,8 @@ ChatItem::ChatItem(const QPersistentModelIndex &index_, QGraphicsItem *parent) :
   _fontMetrics = QtUi::style()->fontMetrics(data(ChatLineModel::FormatRole).value<UiStyle::FormatList>().at(0).second);
   _layout = 0;
   _lines = 0;
+  _selectionStart = -1;
+  _selectionMode = NoSelection;
 }
 
 ChatItem::~ChatItem() {
@@ -45,17 +50,17 @@ QVariant ChatItem::data(int role) const {
   return _index.data(role);
 }
 
-int ChatItem::setWidth(int w) {
-  w -= 10;
+qreal ChatItem::setWidth(qreal w) {
   if(w == _boundingRect.width()) return _boundingRect.height();
+  prepareGeometryChange();
   _boundingRect.setWidth(w);
-  int h = heightForWidth(w);
+  qreal h = computeHeight();
   _boundingRect.setHeight(h);
   if(haveLayout()) updateLayout();
   return h;
 }
 
-int ChatItem::heightForWidth(int width) {
+qreal ChatItem::computeHeight() {
   if(data(ChatLineModel::ColumnTypeRole).toUInt() != ChatLineModel::ContentsColumn)
     return fontMetrics()->lineSpacing(); // only contents can be multi-line
 
@@ -65,6 +70,155 @@ int ChatItem::heightForWidth(int width) {
   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);
+
+  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);
+
+      // 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;
+
+        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;
+  }
+}
+
+void ChatItem::clearLayout() {
+  delete _layout;
+  _layout = 0;
+}
+
+// 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();
+  } // TODO: add selection format here
+  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());
+}
+
+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);
+    }
+  }
+  return 0;
+}
+
+void ChatItem::setFullSelection() {
+  _selectionMode = FullSelection;
+  update();
+}
+
+void ChatItem::clearSelection() {
+  _selectionMode = NoSelection;
+  update();
+}
+
+void ChatItem::mousePressEvent(QGraphicsSceneMouseEvent *event) {
+  if(event->buttons() & Qt::LeftButton) {
+    chatScene()->setSelectingItem(this);  // removes earlier selection if exists
+    _selectionStart = _selectionEnd = posToCursor(event->pos());
+    _selectionMode = PartialSelection;
+    event->accept();
+  } else {
+    event->ignore();
+  }
+}
+
+void ChatItem::mouseMoveEvent(QGraphicsSceneMouseEvent *event) {
+  if(contains(event->pos())) {
+    _selectionEnd = posToCursor(event->pos());
+    update();
+  } else {
+    setFullSelection();
+    ungrabMouse();
+    chatScene()->startGlobalSelection(this);
+  }
+}
+
+void ChatItem::mouseReleaseEvent(QGraphicsSceneMouseEvent *event) {
+  if(_selectionMode != NoSelection) {
+    _selectionEnd = posToCursor(event->pos());
+    QString selection
+        = data(MessageModel::DisplayRole).toString().mid(qMin(_selectionStart, _selectionEnd), qAbs(_selectionStart - _selectionEnd));
+    QApplication::clipboard()->setText(selection, QClipboard::Clipboard);  // TODO configure where selections should go
+    event->accept();
+  } else {
+    event->ignore();
+  }
+}
+
+/*************************************************************************************************/
+
 ChatItem::WrapColumnFinder::WrapColumnFinder(ChatItem *_item) : item(_item) {
   wrapList = item->data(ChatLineModel::WrapListRole).value<ChatLineModel::WrapList>();
   wordidx = 0;
@@ -78,7 +232,7 @@ ChatItem::WrapColumnFinder::~WrapColumnFinder() {
   delete layout;
 }
 
-int ChatItem::WrapColumnFinder::nextWrapColumn() {
+qint16 ChatItem::WrapColumnFinder::nextWrapColumn() {
   while(wordidx < wrapList.count()) {
     w += wrapList.at(wordidx).width;
     if(w >= item->width()) {
@@ -109,75 +263,3 @@ int ChatItem::WrapColumnFinder::nextWrapColumn() {
   }
   return -1;
 }
-
-QTextLayout *ChatItem::createLayout(QTextOption::WrapMode wrapMode) {
-  QTextLayout *layout = new QTextLayout(data(MessageModel::DisplayRole).toString());
-
-  QTextOption option;
-  option.setWrapMode(wrapMode);
-  layout->setTextOption(option);
-
-  QList<QTextLayout::FormatRange> formatRanges
-         = QtUi::style()->toTextLayoutList(data(MessageModel::FormatRole).value<UiStyle::FormatList>(), layout->text().length());
-  layout->setAdditionalFormats(formatRanges);
-  return layout;
-}
-
-void ChatItem::updateLayout() {
-  if(!haveLayout()) _layout = createLayout(QTextOption::WrapAnywhere);
-
-  // 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;
-  WrapColumnFinder finder(this);
-  _layout->beginLayout();
-  forever {
-    QTextLine line = _layout->createLine();
-    if (!line.isValid())
-      break;
-
-    int col = finder.nextWrapColumn();
-    line.setNumColumns(col >= 0 ? col - line.textStart() : _layout->text().length());
-
-    h += fontMetrics()->leading();
-    line.setPosition(QPointF(0, h));
-    h += line.height();
-  }
-  _layout->endLayout();
-}
-
-void ChatItem::clearLayout() {
-  delete _layout;
-  _layout = 0;
-}
-
-//int ChatItem::findNextWrapColumn(
-
-void ChatItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) {
-  Q_UNUSED(option); Q_UNUSED(widget);
-  if(!haveLayout()) updateLayout();
-  _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::mouseMoveEvent ( QGraphicsSceneMouseEvent * event ) {
-  qDebug() << (void*)this << "moving" << event->pos();
-  if(event->pos().y() < 0) {
-    QTextCursor cursor(document());
-    //cursor.insertText("foo");
-    //cursor.select(QTextCursor::Document);
-    event->ignore();
-  } else QGraphicsTextItem::mouseMoveEvent(event);
-}
-*/