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