Fixing Topic Widget (vertical centering, scrolling and doubleclickination)

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

diff --git a/src/qtui/topiclabel.cpp b/src/qtui/topiclabel.cpp
new file mode 100644 (file)
index 0000000..33a752c
--- /dev/null
+++ b/src/qtui/topiclabel.cpp
@@ -0,0 +1,168 @@
+/***************************************************************************
+ *   Copyright (C) 2005/06 by the Quassel Project                          *
+ *   devel@quassel-irc.org                                                 *
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) version 3.                                           *
+ *                                                                         *
+ *   This program is distributed in the hope that it will be useful,       *
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+ *   GNU General Public License for more details.                          *
+ *                                                                         *
+ *   You should have received a copy of the GNU General Public License     *
+ *   along with this program; if not, write to the                         *
+ *   Free Software Foundation, Inc.,                                       *
+ *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
+ ***************************************************************************/
+
+#include "topiclabel.h"
+
+
+#include <QDebug>
+
+#include <QApplication>
+#include <QDesktopServices>
+#include <QPainter>
+// #include <QHBoxLayout>
+#include <QFont>
+#include <QFontMetrics>
+
+#include "qtui.h"
+#include "message.h"
+
+TopicLabel::TopicLabel(QWidget *parent)
+  : QFrame(parent),
+    offset(0),
+    dragStartX(0),
+    dragMode(false)
+{
+}
+
+void TopicLabel::paintEvent(QPaintEvent *event) {
+  Q_UNUSED(event);
+
+  textPartOffset.clear();
+  
+  QPainter painter(this);
+  painter.setBackgroundMode(Qt::OpaqueMode);
+
+  // FIXME re-enable topic painting
+#ifndef SPUTDEV
+  QRect drawRect = rect().adjusted(offset, 0, 0, 0);
+  QRect brect;
+  QString textPart;
+  foreach(QTextLayout::FormatRange fr, styledContents.formatList) {
+    textPart = styledContents.plainText.mid(fr.start, fr.length);
+    textPartOffset << drawRect.left();
+    painter.setFont(fr.format.font());
+    painter.setPen(QPen(fr.format.foreground(), 0));
+    painter.setBackground(fr.format.background());
+    painter.drawText(drawRect, Qt::AlignLeft|Qt::AlignVCenter, textPart, &brect);
+    drawRect.setLeft(brect.right());
+  }
+#endif
+}
+
+void TopicLabel::setText(const QString &text) {
+  if(_text == text)
+    return;
+
+  _text = text;
+  update();
+
+#ifndef SPUTDEV
+  styledContents = QtUi::style()->styleString(Message::mircToInternal(text));
+  int height = 1;
+  foreach(QTextLayout::FormatRange fr, styledContents.formatList) {
+    height = qMax(height, QFontMetrics(fr.format.font()).height());
+  }
+
+  // ensure the label is editable (height != 1) if there is no text to show
+  if(text.isEmpty())
+    height = QFontMetrics(qApp->font()).height();
+  
+  // setFixedHeight(height);
+#endif  
+  // show topic in tooltip
+  setToolTip(_text);
+}
+
+
+void TopicLabel::mouseMoveEvent(QMouseEvent *event) {
+  if(!dragMode)
+    return;
+
+  event->accept();
+  offset = event->pos().x() - dragStartX;
+  update();
+}
+
+void TopicLabel::mousePressEvent(QMouseEvent *event) {
+  event->accept();
+  dragMode = true;
+  dragStartX = event->pos().x() - offset;
+}
+
+void TopicLabel::mouseReleaseEvent(QMouseEvent *event) {
+  event->accept();
+  dragMode = false;
+  if(qAbs(offset) < 10) {
+    offset = 0;
+    update();
+  }
+}
+
+void TopicLabel::mouseDoubleClickEvent(QMouseEvent *event) {
+#ifndef SPUTDEV
+  event->accept();
+  int textPart = 0;
+  int textOffset = 0;
+
+  if(textPartOffset.isEmpty())
+    return;
+
+  // find the text part that contains the url. We don't expect color codes in urls so we expect only full parts (yet?)
+  int x = event->pos().x();
+  while(textPart + 1 < textPartOffset.count()) {
+    if(textPartOffset[textPart + 1] < x) {
+      textPart++;
+      textOffset = textPartOffset[textPart];
+    } else {
+      break;
+    }
+  }
+
+  // we've Identified the needed text part \o/
+  QString text = styledContents.plainText.mid(styledContents.formatList[textPart].start, styledContents.formatList[textPart].length);
+
+  // now we have to find the the left and right word delimiters of the clicked word
+  QFontMetrics fontMetric(styledContents.formatList[textPart].format.font());
+  
+  int start = 0;
+  int spacePos = text.indexOf(" ");
+  while(spacePos != -1) {
+    if(fontMetric.width(text.left(spacePos + 1)) + textOffset < x) {
+      start = spacePos + 1;
+      spacePos = text.indexOf(" ", start + 1);
+    } else {
+      break;
+    }
+  }
+
+  int end = text.indexOf(" ", start);
+  int len = -1;
+  if(end != -1) {
+    len = end - start;
+  }
+  QString word = text.mid(start, len);
+  qDebug() << word;
+  QRegExp regex("^(h|f)t{1,2}ps?:\\/\\/");
+  if(regex.indexIn(word) != -1) {
+    QDesktopServices::openUrl(QUrl(word));
+  }
+#endif
+  
+}