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 (!m_preview->pixmap(Qt::ReturnByValue).isNull()) {
  85         return m_preview->pixmap(Qt::ReturnByValue);
  86     }
  87
  88     return QPixmap();
  89 }
  90
  91 void DolphinFileMetaDataWidget::setName(const QString& name)
  92 {
  93     QTextOption textOption;
  94     textOption.setWrapMode(QTextOption::WrapAtWordBoundaryOrAnywhere);
  95
  96     const QString processedName = Qt::mightBeRichText(name) ? name : KStringHandler::preProcessWrap(name);
  97
  98     QTextLayout textLayout(processedName);
  99     textLayout.setFont(m_name->font());
 100     textLayout.setTextOption(textOption);
 101
 102     QString wrappedText;
 103     wrappedText.reserve(processedName.length());
 104
 105     // wrap the text to fit into the maximum width of m_name
 106     textLayout.beginLayout();
 107     QTextLine line = textLayout.createLine();
 108     while (line.isValid()) {
 109         line.setLineWidth(m_name->maximumWidth());
 110         wrappedText += QStringView(processedName).mid(line.textStart(), line.textLength());
 111
 112         line = textLayout.createLine();
 113         if (line.isValid()) {
 114             wrappedText += QChar::LineSeparator;
 115         }
 116     }
 117     textLayout.endLayout();
 118
 119     m_name->setText(wrappedText);
 120 }
 121
 122 QString DolphinFileMetaDataWidget::name() const
 123 {
 124     return m_name->text();
 125 }
 126
 127 void DolphinFileMetaDataWidget::setItems(const KFileItemList& items)
 128 {
 129     m_fileMetaDataWidget->setItems(items);
 130 }
 131
 132 KFileItemList DolphinFileMetaDataWidget::items() const
 133 {
 134     return m_fileMetaDataWidget->items();
 135 }
 136