src/views/tooltips/dolphinfilemetadatawidget.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 "dolphinfilemetadatawidget.h"
  23
  24 #include <KColorScheme>
  25 #include <KSeparator>
  26 #include <KStringHandler>
  27 #include <QTextDocument>
  28
  29 #include <QLabel>
  30 #include <QStyleOptionFrame>
  31 #include <QStylePainter>
  32 #include <QVBoxLayout>
  33 #include <QTextLayout>
  34 #include <QTextLine>
  35
  36 #ifndef HAVE_BALOO
  37 #include <KFileMetaDataWidget>
  38 #else
  39 #include <Baloo/FileMetaDataWidget>
  40 #endif
  41
  42 DolphinFileMetaDataWidget::DolphinFileMetaDataWidget(QWidget* parent) :
  43     QWidget(parent),
  44     m_preview(0),
  45     m_name(0),
  46     m_fileMetaDataWidget(0)
  47 {
  48     // Create widget for file preview
  49     m_preview = new QLabel(this);
  50     m_preview->setAlignment(Qt::AlignTop);
  51
  52     // Create widget for file name
  53     m_name = new QLabel(this);
  54     m_name->setForegroundRole(QPalette::ToolTipText);
  55     m_name->setTextFormat(Qt::PlainText);
  56     m_name->setAlignment(Qt::AlignHCenter);
  57
  58     QFont font = m_name->font();
  59     font.setBold(true);
  60     m_name->setFont(font);
  61
  62     QFontMetrics fontMetrics(font);
  63     m_name->setMaximumWidth(fontMetrics.averageCharWidth() * 40);
  64
  65     // Create widget for the meta data
  66 #ifndef HAVE_BALOO
  67     m_fileMetaDataWidget = new KFileMetaDataWidget(this);
  68     connect(m_fileMetaDataWidget, &KFileMetaDataWidget::metaDataRequestFinished,
  69             this, &DolphinFileMetaDataWidget::metaDataRequestFinished);
  70 #else
  71     m_fileMetaDataWidget = new Baloo::FileMetaDataWidget(this);
  72     connect(m_fileMetaDataWidget, &Baloo::FileMetaDataWidget::metaDataRequestFinished,
  73             this, &DolphinFileMetaDataWidget::metaDataRequestFinished);
  74 #endif
  75     m_fileMetaDataWidget->setForegroundRole(QPalette::ToolTipText);
  76     m_fileMetaDataWidget->setReadOnly(true);
  77
  78     QVBoxLayout* textLayout = new QVBoxLayout();
  79     textLayout->addWidget(m_name);
  80     textLayout->addWidget(new KSeparator());
  81     textLayout->addWidget(m_fileMetaDataWidget);
  82     textLayout->setAlignment(m_name, Qt::AlignCenter);
  83     textLayout->setAlignment(m_fileMetaDataWidget, Qt::AlignLeft);
  84     // Assure that the text-layout gets top-aligned by adding a stretch.
  85     // Don't use textLayout->setAlignment(Qt::AlignTop) instead, as this does
  86     // not work with the heightForWidth()-size-hint of m_fileMetaDataWidget
  87     // (see bug #241608)
  88     textLayout->addStretch();
  89
  90     QHBoxLayout* layout = new QHBoxLayout(this);
  91     layout->addWidget(m_preview);
  92     layout->addSpacing(layout->margin());
  93     layout->addLayout(textLayout);
  94 }
  95
  96 DolphinFileMetaDataWidget::~DolphinFileMetaDataWidget()
  97 {
  98 }
  99
 100 void DolphinFileMetaDataWidget::setPreview(const QPixmap& pixmap)
 101 {
 102     m_preview->setPixmap(pixmap);
 103 }
 104
 105 QPixmap DolphinFileMetaDataWidget::preview() const
 106 {
 107     if (m_preview->pixmap()) {
 108         return *m_preview->pixmap();
 109     }
 110     return QPixmap();
 111 }
 112
 113 void DolphinFileMetaDataWidget::setName(const QString& name)
 114 {
 115     QTextOption textOption;
 116     textOption.setWrapMode(QTextOption::WrapAtWordBoundaryOrAnywhere);
 117
 118     const QString processedName = Qt::mightBeRichText(name) ? name : KStringHandler::preProcessWrap(name);
 119
 120     QTextLayout textLayout(processedName);
 121     textLayout.setFont(m_name->font());
 122     textLayout.setTextOption(textOption);
 123
 124     QString wrappedText;
 125     wrappedText.reserve(processedName.length());
 126
 127     // wrap the text to fit into the maximum width of m_name
 128     textLayout.beginLayout();
 129     QTextLine line = textLayout.createLine();
 130     while (line.isValid()) {
 131         line.setLineWidth(m_name->maximumWidth());
 132         wrappedText += processedName.midRef(line.textStart(), line.textLength());
 133
 134         line = textLayout.createLine();
 135         if (line.isValid()) {
 136             wrappedText += QChar::LineSeparator;
 137         }
 138     }
 139     textLayout.endLayout();
 140
 141     m_name->setText(wrappedText);
 142 }
 143
 144 QString DolphinFileMetaDataWidget::name() const
 145 {
 146     return m_name->text();
 147 }
 148
 149 void DolphinFileMetaDataWidget::setItems(const KFileItemList& items)
 150 {
 151     m_fileMetaDataWidget->setItems(items);
 152 }
 153
 154 KFileItemList DolphinFileMetaDataWidget::items() const
 155 {
 156     return m_fileMetaDataWidget->items();
 157 }
 158