Introducing StyledLabel

This widget evolved from TopicLabel and provides a QFrame that contains a mIRC-formatted string
(e.g. it accepts mIRC's format codes in the input). Rather than the old drag-to-scroll behavior,
this widget provides a tooltip. It also uses proper QTextLayouts instead of assembling text snippets
manually.

Note that URLs are not yet clickable. This will be added later.

diff --git a/src/uisupport/CMakeLists.txt b/src/uisupport/CMakeLists.txt
index 549cee2..9a53807 100644 (file)
--- a/src/uisupport/CMakeLists.txt
+++ b/src/uisupport/CMakeLists.txt
@@ -27,7 +27,9 @@ set(SOURCES
     nickview.cpp
     nickviewfilter.cpp
     qssparser.cpp
+    resizingstackedwidget.cpp
     settingspage.cpp
+    styledlabel.cpp
     tabcompleter.cpp
     toolbaractionprovider.cpp
     uisettings.cpp
@@ -56,7 +58,9 @@ set(MOC_HDRS
     networkmodelcontroller.h
     nickview.h
     nickviewfilter.h
+    resizingstackedwidget.h
     settingspage.h
+    styledlabel.h
     tabcompleter.h
     toolbaractionprovider.h
     uistyle.h

diff --git a/src/uisupport/styledlabel.cpp b/src/uisupport/styledlabel.cpp
new file mode 100644 (file)
index 0000000..13690df
--- /dev/null
+++ b/src/uisupport/styledlabel.cpp
@@ -0,0 +1,130 @@
+/***************************************************************************
+*   Copyright (C) 2005-09 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 <QPainter>
+#include <QTextDocument>
+#include <QTextLayout>
+
+#include "graphicalui.h"
+#include "styledlabel.h"
+#include "uistyle.h"
+
+StyledLabel::StyledLabel(QWidget *parent)
+: QFrame(parent),
+  _wrapMode(QTextOption::NoWrap),
+  _alignment(Qt::AlignVCenter|Qt::AlignLeft),
+  _toolTipEnabled(true)
+{
+  QTextOption opt = _layout.textOption();
+  opt.setWrapMode(_wrapMode);
+  opt.setAlignment(_alignment);
+  _layout.setTextOption(opt);
+}
+
+void StyledLabel::setWrapMode(QTextOption::WrapMode mode) {
+  if(_wrapMode == mode)
+    return;
+
+  _wrapMode = mode;
+  QTextOption opt = _layout.textOption();
+  opt.setWrapMode(mode);
+  _layout.setTextOption(opt);
+
+  layout();
+}
+
+void StyledLabel::setAlignment(Qt::Alignment alignment) {
+  if(_alignment == alignment)
+    return;
+
+  _alignment = alignment;
+  QTextOption opt = _layout.textOption();
+  opt.setAlignment(alignment);
+  _layout.setTextOption(opt);
+
+  layout();
+}
+
+void StyledLabel::resizeEvent(QResizeEvent *event) {
+  QFrame::resizeEvent(event);
+
+  layout();
+}
+
+QSize StyledLabel::sizeHint() const {
+  return _sizeHint;
+}
+
+void StyledLabel::updateSizeHint() {
+  QSize sh;
+  int padding = frameWidth() * 2;
+  sh = _layout.boundingRect().size().toSize() + QSize(padding, padding);
+
+  if(_sizeHint != sh) {
+    _sizeHint = sh;
+    updateGeometry();
+  }
+}
+
+void StyledLabel::setText(const QString &text) {
+  UiStyle *style = GraphicalUi::uiStyle();
+
+  UiStyle::StyledString sstr = style->styleString(style->mircToInternal(text), UiStyle::PlainMsg);
+  QList<QTextLayout::FormatRange> layoutList = style->toTextLayoutList(sstr.formatList, sstr.plainText.length(), 0);
+
+  _layout.setText(sstr.plainText);
+  _layout.setAdditionalFormats(layoutList);
+
+  layout();
+}
+
+void StyledLabel::updateToolTip() {
+  if(frameRect().width() - 2*frameWidth() < _layout.minimumWidth())
+    setToolTip(QString("<qt>%1</qt>").arg(Qt::escape(_layout.text()))); // only rich text gets wordwrapped!
+  else
+    setToolTip(QString());
+}
+
+void StyledLabel::layout() {
+  qreal h = 0;
+  qreal w = frameRect().width() - 2*frameWidth();
+
+  _layout.beginLayout();
+  forever {
+    QTextLine line = _layout.createLine();
+    if(!line.isValid())
+      break;
+    line.setLineWidth(w);
+    line.setPosition(QPointF(0, h));
+    h += line.height();
+  }
+  _layout.endLayout();
+
+  updateSizeHint();
+  updateToolTip();
+  update();
+}
+
+void StyledLabel::paintEvent(QPaintEvent *) {
+  QPainter painter(this);
+
+  qreal y = (frameRect().height() - _layout.boundingRect().height()) / 2;
+  _layout.draw(&painter, QPointF(0, y), QVector<QTextLayout::FormatRange>());
+}

diff --git a/src/uisupport/styledlabel.h b/src/uisupport/styledlabel.h
new file mode 100644 (file)
index 0000000..4eefb6a
--- /dev/null
+++ b/src/uisupport/styledlabel.h
@@ -0,0 +1,71 @@
+/***************************************************************************
+ *   Copyright (C) 2005-09 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.             *
+ ***************************************************************************/
+
+#ifndef STYLEDLABEL_H
+#define STYLEDLABEL_H
+
+#include <QFrame>
+
+#include "uistyle.h"
+
+class StyledLabel : public QFrame {
+  Q_OBJECT
+
+public:
+  StyledLabel(QWidget *parent = 0);
+
+  void setText(const QString &text);
+
+  virtual QSize sizeHint() const;
+  //virtual QSize minimumSizeHint() const;
+
+  inline QTextOption::WrapMode wrapMode() const { return _wrapMode; }
+  void setWrapMode(QTextOption::WrapMode mode);
+
+  inline Qt::Alignment alignment() const { return _alignment; }
+  void setAlignment(Qt::Alignment alignment);
+
+  inline bool toolTipEnabled() const { return _toolTipEnabled; }
+  void setToolTipEnabled(bool);
+
+protected:
+  virtual void paintEvent(QPaintEvent *event);
+  virtual void resizeEvent(QResizeEvent *event);
+
+  //void mouseMoveEvent(QMouseEvent *event);
+  //void mousePressEvent(QMouseEvent *event);
+  //void mouseReleaseEvent(QMouseEvent *event);
+  //void mouseDoubleClickEvent(QMouseEvent *event);
+
+private:
+  QSize _sizeHint;
+  QTextOption::WrapMode _wrapMode;
+  Qt::Alignment _alignment;
+  QTextLayout _layout;
+  bool _toolTipEnabled;
+
+  QList<QTextLayout::FormatRange> _layoutList;
+
+  void layout();
+  void updateSizeHint();
+  void updateToolTip();
+};
+
+#endif