src/selectionmode/topbar.cpp

   1 /*
   2     This file is part of the KDE project
   3     SPDX-FileCopyrightText: 2022 Felix Ernst <felixernst@kde.org>
   4
   5     SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
   6 */
   7
   8 #include "topbar.h"
   9
  10 #include "backgroundcolorhelper.h"
  11
  12 #include <KColorScheme>
  13 #include <KContextualHelpButton>
  14 #include <KLocalizedString>
  15
  16 #include <QHBoxLayout>
  17 #include <QLabel>
  18 #include <QPushButton>
  19 #include <QStyle>
  20
  21 using namespace SelectionMode;
  22
  23 TopBar::TopBar(QWidget *parent)
  24     : AnimatedHeightWidget{parent}
  25 {
  26     QWidget *contentsContainer = prepareContentsContainer();
  27
  28     BackgroundColorHelper::instance()->controlBackgroundColor(this);
  29
  30     m_fullLabelString = i18nc("@info label above the view explaining the state", "Selection Mode: Click on files or folders to select or deselect them.");
  31     m_shortLabelString = i18nc("@info label above the view explaining the state", "Selection Mode");
  32     m_label = new QLabel(contentsContainer);
  33     m_label->setMinimumWidth(0);
  34     m_label->setTextInteractionFlags(Qt::TextSelectableByMouse | Qt::TextSelectableByKeyboard | Qt::LinksAccessibleByKeyboard); // for keyboard accessibility
  35     BackgroundColorHelper::instance()->controlBackgroundColor(m_label);
  36
  37     m_contextualHelpButton = new KContextualHelpButton{
  38         xi18nc("@info",
  39                "<title>Selection Mode</title><para>Select files or folders to manage or manipulate them."
  40                "<list><item>Press on a file or folder to select it.</item><item>Press on an already selected file or folder to deselect it.</item>"
  41                "<item>Pressing an empty area does <emphasis>not</emphasis> clear the selection.</item>"
  42                "<item>Selection rectangles (created by dragging from an empty area) invert the selection status of items within.</item>"
  43                "<item>Moving with <shortcut>arrow keys</shortcut> does <emphasis>not</emphasis> change the selection.</item>"
  44                "<item>Pressing <shortcut>%1</shortcut>, <shortcut>%2</shortcut>, or <shortcut>%3</shortcut> toggles the selection.</item></list></para>"
  45                "<para>The available action buttons at the bottom change depending on the current selection.</para>",
  46                QKeySequence{Qt::Key_Enter}.toString(QKeySequence::NativeText),
  47                QKeySequence{Qt::Key_Return}.toString(QKeySequence::NativeText),
  48                QKeySequence{Qt::CTRL | Qt::Key_Space}.toString(QKeySequence::NativeText)),
  49         nullptr,
  50         contentsContainer};
  51
  52     m_closeButton = new QPushButton(QIcon::fromTheme(QStringLiteral("window-close-symbolic")), "", contentsContainer);
  53     m_closeButton->setText(i18nc("@action:button", "Exit Selection Mode"));
  54     m_closeButton->setFlat(true);
  55     connect(m_closeButton, &QAbstractButton::clicked, this, &TopBar::selectionModeLeavingRequested);
  56
  57     QHBoxLayout *layout = new QHBoxLayout(contentsContainer);
  58     auto contentsMargins = layout->contentsMargins();
  59     m_preferredHeight = contentsMargins.top() + m_label->sizeHint().height() + contentsMargins.bottom();
  60     m_closeButton->setFixedHeight(m_preferredHeight);
  61     layout->setContentsMargins(0, 0, 0, 0);
  62
  63     layout->addStretch();
  64     layout->addWidget(m_label);
  65     layout->addWidget(m_contextualHelpButton);
  66     layout->addStretch();
  67     layout->addWidget(m_closeButton);
  68 }
  69
  70 void TopBar::resizeEvent(QResizeEvent *resizeEvent)
  71 {
  72     updateLabelString();
  73     return AnimatedHeightWidget::resizeEvent(resizeEvent);
  74 }
  75
  76 void TopBar::updateLabelString()
  77 {
  78     QFontMetrics fontMetrics = m_label->fontMetrics();
  79     if (fontMetrics.horizontalAdvance(m_fullLabelString) + m_contextualHelpButton->sizeHint().width() + m_closeButton->sizeHint().width()
  80             + style()->pixelMetric(QStyle::PM_LayoutLeftMargin) * 2 + style()->pixelMetric(QStyle::PM_LayoutRightMargin) * 2
  81         < width()) {
  82         m_label->setText(m_fullLabelString);
  83     } else {
  84         m_label->setText(m_shortLabelString);
  85     }
  86 }
  87
  88 #include "moc_topbar.cpp"