src/views/tooltips/dolphinfilemetadatawidget.cpp

   1 /*
   2  * SPDX-FileCopyrightText: 2010 Peter Penz <peter.penz19@gmail.com>
   3  * SPDX-FileCopyrightText: 2008 Fredrik Höglund <fredrik@kde.org>
   4  * SPDX-FileCopyrightText: 2012 Mark Gaiser <markg85@gmail.com>
   5  *
   6  * SPDX-License-Identifier: GPL-2.0-or-later
   7  */
   8
   9 #include "dolphinfilemetadatawidget.h"
  10
  11 #include <KColorScheme>
  12 #include <KSeparator>
  13 #include <KStringHandler>
  14 #include <Baloo/FileMetaDataWidget>
  15
  16 #include <QLabel>
  17 #include <QStyleOptionFrame>
  18 #include <QStylePainter>
  19 #include <QTextDocument>
  20 #include <QTextLayout>
  21 #include <QVBoxLayout>
  22
  23 DolphinFileMetaDataWidget::DolphinFileMetaDataWidget(QWidget* parent) :
  24     QWidget(parent),
  25     m_preview(nullptr),
  26     m_name(nullptr),
  27     m_fileMetaDataWidget(nullptr)
  28 {
  29     // Create widget for file preview
  30     m_preview = new QLabel(this);
  31     m_preview->setAlignment(Qt::AlignTop);
  32
  33     // Create widget for file name
  34     m_name = new QLabel(this);
  35     m_name->setForegroundRole(QPalette::ToolTipText);
  36     m_name->setTextFormat(Qt::PlainText);
  37     m_name->setAlignment(Qt::AlignHCenter);
  38
  39     QFont font = m_name->font();
  40     font.setBold(true);
  41     m_name->setFont(font);
  42
  43     QFontMetrics fontMetrics(font);
  44     m_name->setMaximumWidth(fontMetrics.averageCharWidth() * 40);
  45
  46     // Create widget for the meta data
  47     m_fileMetaDataWidget = new Baloo::FileMetaDataWidget(this);
  48     connect(m_fileMetaDataWidget, &Baloo::FileMetaDataWidget::metaDataRequestFinished,
  49             this, &DolphinFileMetaDataWidget::metaDataRequestFinished);
  50     connect(m_fileMetaDataWidget, &Baloo::FileMetaDataWidget::urlActivated,
  51             this, &DolphinFileMetaDataWidget::urlActivated);
  52     m_fileMetaDataWidget->setForegroundRole(QPalette::ToolTipText);
  53     m_fileMetaDataWidget->setReadOnly(true);
  54
  55     QVBoxLayout* textLayout = new QVBoxLayout();
  56     textLayout->addWidget(m_name);
  57     textLayout->addWidget(new KSeparator());
  58     textLayout->addWidget(m_fileMetaDataWidget);
  59     textLayout->setAlignment(m_name, Qt::AlignCenter);
  60     textLayout->setAlignment(m_fileMetaDataWidget, Qt::AlignLeft);
  61     // Assure that the text-layout gets top-aligned by adding a stretch.
  62     // Don't use textLayout->setAlignment(Qt::AlignTop) instead, as this does
  63     // not work with the heightForWidth()-size-hint of m_fileMetaDataWidget
  64     // (see bug #241608)
  65     textLayout->addStretch();
  66
  67     QHBoxLayout* layout = new QHBoxLayout(this);
  68     layout->addWidget(m_preview);
  69     layout->addSpacing(layout->contentsMargins().left());
  70     layout->addLayout(textLayout);
  71 }
  72
  73 DolphinFileMetaDataWidget::~DolphinFileMetaDataWidget()
  74 {
  75 }
  76
  77 void DolphinFileMetaDataWidget::setPreview(const QPixmap& pixmap)
  78 {
  79     m_preview->setPixmap(pixmap);
  80 }
  81
  82 QPixmap DolphinFileMetaDataWidget::preview() const
  83 {
  84 #if QT_VERSION < QT_VERSION_CHECK(5, 15, 0)
  85     if (m_preview->pixmap()) {
  86         return *m_preview->pixmap();
  87     }
  88 #else
  89     if (!m_preview->pixmap(Qt::ReturnByValue).isNull()) {
  90         return m_preview->pixmap(Qt::ReturnByValue);
  91     }
  92 #endif
  93
  94     return QPixmap();
  95 }
  96
  97 void DolphinFileMetaDataWidget::setName(const QString& name)
  98 {
  99     QTextOption textOption;
 100     textOption.setWrapMode(QTextOption::WrapAtWordBoundaryOrAnywhere);
 101
 102     const QString processedName = Qt::mightBeRichText(name) ? name : KStringHandler::preProcessWrap(name);
 103
 104     QTextLayout textLayout(processedName);
 105     textLayout.setFont(m_name->font());
 106     textLayout.setTextOption(textOption);
 107
 108     QString wrappedText;
 109     wrappedText.reserve(processedName.length());
 110
 111     // wrap the text to fit into the maximum width of m_name
 112     textLayout.beginLayout();
 113     QTextLine line = textLayout.createLine();
 114     while (line.isValid()) {
 115         line.setLineWidth(m_name->maximumWidth());
 116         wrappedText += processedName.midRef(line.textStart(), line.textLength());
 117
 118         line = textLayout.createLine();
 119         if (line.isValid()) {
 120             wrappedText += QChar::LineSeparator;
 121         }
 122     }
 123     textLayout.endLayout();
 124
 125     m_name->setText(wrappedText);
 126 }
 127
 128 QString DolphinFileMetaDataWidget::name() const
 129 {
 130     return m_name->text();
 131 }
 132
 133 void DolphinFileMetaDataWidget::setItems(const KFileItemList& items)
 134 {
 135     m_fileMetaDataWidget->setItems(items);
 136 }
 137
 138 KFileItemList DolphinFileMetaDataWidget::items() const
 139 {
 140     return m_fileMetaDataWidget->items();
 141 }
 142