src/views/tooltips/filemetadatatooltip.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2010 by Peter Penz <peter.penz19@gmail.com>             *
   3  *   Copyright (C) 2008 by Fredrik Höglund <fredrik@kde.org>               *
   4  *   Copyright (C) 2012 by Mark Gaiser <markg85@gmail.com>                 *
   5  *                                                                         *
   6  *   This program is free software; you can redistribute it and/or modify  *
   7  *   it under the terms of the GNU General Public License as published by  *
   8  *   the Free Software Foundation; either version 2 of the License, or     *
   9  *   (at your option) any later version.                                   *
  10  *                                                                         *
  11  *   This program is distributed in the hope that it will be useful,       *
  12  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  13  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  14  *   GNU General Public License for more details.                          *
  15  *                                                                         *
  16  *   You should have received a copy of the GNU General Public License     *
  17  *   along with this program; if not, write to the                         *
  18  *   Free Software Foundation, Inc.,                                       *
  19  *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA            *
  20  ***************************************************************************/
  21
  22 #include "filemetadatatooltip.h"
  23
  24 #include <KColorScheme>
  25 #include <KSeparator>
  26 // For the blurred tooltip background
  27 #include <KWindowEffects>
  28 #include <KStringHandler>
  29 #include <QTextDocument>
  30
  31 #include <QLabel>
  32 #include <QStyleOptionFrame>
  33 #include <QStylePainter>
  34 #include <QVBoxLayout>
  35 #include <QTextLayout>
  36 #include <QTextLine>
  37
  38 #ifndef HAVE_BALOO
  39 #include <KFileMetaDataWidget>
  40 #else
  41 #include <Baloo/FileMetaDataWidget>
  42 #endif
  43
  44 FileMetaDataToolTip::FileMetaDataToolTip(QWidget* parent) :
  45     QWidget(parent),
  46     m_preview(0),
  47     m_name(0),
  48     m_fileMetaDataWidget(0)
  49 {
  50     // Create widget for file preview
  51     m_preview = new QLabel(this);
  52     m_preview->setAlignment(Qt::AlignTop);
  53
  54     // Create widget for file name
  55     m_name = new QLabel(this);
  56     m_name->setForegroundRole(QPalette::ToolTipText);
  57     m_name->setTextFormat(Qt::PlainText);
  58     m_name->setAlignment(Qt::AlignHCenter);
  59
  60     QFont font = m_name->font();
  61     font.setBold(true);
  62     m_name->setFont(font);
  63
  64     QFontMetrics fontMetrics(font);
  65     m_name->setMaximumWidth(fontMetrics.averageCharWidth() * 40);
  66
  67     // Create widget for the meta data
  68 #ifndef HAVE_BALOO
  69     m_fileMetaDataWidget = new KFileMetaDataWidget(this);
  70     connect(m_fileMetaDataWidget, &KFileMetaDataWidget::metaDataRequestFinished,
  71             this, &FileMetaDataToolTip::metaDataRequestFinished);
  72 #else
  73     m_fileMetaDataWidget = new Baloo::FileMetaDataWidget(this);
  74     connect(m_fileMetaDataWidget, &Baloo::FileMetaDataWidget::metaDataRequestFinished,
  75             this, &FileMetaDataToolTip::metaDataRequestFinished);
  76 #endif
  77     m_fileMetaDataWidget->setForegroundRole(QPalette::ToolTipText);
  78     m_fileMetaDataWidget->setReadOnly(true);
  79
  80     QVBoxLayout* textLayout = new QVBoxLayout();
  81     textLayout->addWidget(m_name);
  82     textLayout->addWidget(new KSeparator());
  83     textLayout->addWidget(m_fileMetaDataWidget);
  84     textLayout->setAlignment(m_name, Qt::AlignCenter);
  85     textLayout->setAlignment(m_fileMetaDataWidget, Qt::AlignLeft);
  86     // Assure that the text-layout gets top-aligned by adding a stretch.
  87     // Don't use textLayout->setAlignment(Qt::AlignTop) instead, as this does
  88     // not work with the heightForWidth()-size-hint of m_fileMetaDataWidget
  89     // (see bug #241608)
  90     textLayout->addStretch();
  91
  92     QHBoxLayout* tipLayout = new QHBoxLayout(this);
  93     tipLayout->addWidget(m_preview);
  94     tipLayout->addSpacing(tipLayout->margin());
  95     tipLayout->addLayout(textLayout);
  96 }
  97
  98 FileMetaDataToolTip::~FileMetaDataToolTip()
  99 {
 100 }
 101
 102 void FileMetaDataToolTip::setPreview(const QPixmap& pixmap)
 103 {
 104     m_preview->setPixmap(pixmap);
 105 }
 106
 107 QPixmap FileMetaDataToolTip::preview() const
 108 {
 109     if (m_preview->pixmap()) {
 110         return *m_preview->pixmap();
 111     }
 112     return QPixmap();
 113 }
 114
 115 void FileMetaDataToolTip::setName(const QString& name)
 116 {
 117     QTextOption textOption;
 118     textOption.setWrapMode(QTextOption::WrapAtWordBoundaryOrAnywhere);
 119
 120     const QString processedName = Qt::mightBeRichText(name) ? name : KStringHandler::preProcessWrap(name);
 121
 122     QTextLayout textLayout(processedName);
 123     textLayout.setFont(m_name->font());
 124     textLayout.setTextOption(textOption);
 125
 126     QString wrappedText;
 127     wrappedText.reserve(processedName.length());
 128
 129     // wrap the text to fit into the maximum width of m_name
 130     textLayout.beginLayout();
 131     QTextLine line = textLayout.createLine();
 132     while (line.isValid()) {
 133         line.setLineWidth(m_name->maximumWidth());
 134         wrappedText += processedName.midRef(line.textStart(), line.textLength());
 135
 136         line = textLayout.createLine();
 137         if (line.isValid()) {
 138             wrappedText += QChar::LineSeparator;
 139         }
 140     }
 141     textLayout.endLayout();
 142
 143     m_name->setText(wrappedText);
 144 }
 145
 146 QString FileMetaDataToolTip::name() const
 147 {
 148     return m_name->text();
 149 }
 150
 151 void FileMetaDataToolTip::setItems(const KFileItemList& items)
 152 {
 153     m_fileMetaDataWidget->setItems(items);
 154 }
 155
 156 KFileItemList FileMetaDataToolTip::items() const
 157 {
 158     return m_fileMetaDataWidget->items();
 159 }
 160