mirror of
https://github.com/transmission/transmission
synced 2024-12-25 17:17:31 +00:00
181 lines
4.2 KiB
C++
181 lines
4.2 KiB
C++
// This file Copyright © 2014-2023 Mnemosyne LLC.
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// It may be used under GPLv2 (SPDX: GPL-2.0-only), GPLv3 (SPDX: GPL-3.0-only),
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// or any future license endorsed by Mnemosyne LLC.
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// License text can be found in the licenses/ folder.
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#include <QApplication>
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#include <QDir>
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#include <QFileDialog>
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#include <QFileIconProvider>
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#include <QFileInfo>
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#include <QStyle>
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#include <QStyleOptionToolButton>
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#include <QStylePainter>
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#include "PathButton.h"
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#include "Utils.h"
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PathButton::PathButton(QWidget* parent)
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: QToolButton(parent)
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{
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setSizePolicy(QSizePolicy(QSizePolicy::Preferred, QSizePolicy::Fixed));
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setToolButtonStyle(Qt::ToolButtonTextBesideIcon);
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setText(tr("(None)")); // for minimum width
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updateAppearance();
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connect(this, &QAbstractButton::clicked, this, &PathButton::onClicked);
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}
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void PathButton::setMode(Mode mode)
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{
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if (mode_ == mode)
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{
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return;
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}
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mode_ = mode;
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updateAppearance();
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}
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void PathButton::setTitle(QString const& title)
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{
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title_ = title;
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}
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void PathButton::setNameFilter(QString const& name_filter)
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{
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name_filter_ = name_filter;
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}
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void PathButton::setPath(QString const& path)
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{
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if (path_ == path)
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{
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return;
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}
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path_ = QDir::toNativeSeparators(Utils::removeTrailingDirSeparator(path));
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updateAppearance();
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emit pathChanged(path_);
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}
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QString const& PathButton::path() const
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{
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return path_;
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}
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QSize PathButton::sizeHint() const
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{
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QSize const sh(QToolButton::sizeHint());
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return { qMin(sh.width(), 150), sh.height() };
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}
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void PathButton::paintEvent(QPaintEvent* /*event*/)
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{
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QStylePainter painter(this);
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QStyleOptionToolButton option;
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initStyleOption(&option);
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QSize const fake_content_size(100, 100);
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QSize const fake_size_hint = style()->sizeFromContents(QStyle::CT_ToolButton, &option, fake_content_size, this);
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int text_width = width() - (fake_size_hint.width() - fake_content_size.width()) - iconSize().width() - 6;
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if (popupMode() == MenuButtonPopup)
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{
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text_width -= style()->pixelMetric(QStyle::PM_MenuButtonIndicator, &option, this);
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}
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QFileInfo const path_info(path_);
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option.text = path_.isEmpty() ? tr("(None)") : (path_info.fileName().isEmpty() ? path_ : path_info.fileName());
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option.text = fontMetrics().elidedText(option.text, Qt::ElideMiddle, text_width);
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painter.drawComplexControl(QStyle::CC_ToolButton, option);
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}
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void PathButton::onClicked() const
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{
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auto* dialog = new QFileDialog(window(), effectiveTitle());
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dialog->setFileMode(isDirMode() ? QFileDialog::Directory : QFileDialog::ExistingFile);
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if (isDirMode())
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{
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dialog->setOption(QFileDialog::ShowDirsOnly);
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}
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if (!name_filter_.isEmpty())
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{
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dialog->setNameFilter(name_filter_);
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}
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if (auto const path_info = QFileInfo(path_); !path_.isEmpty() && path_info.exists())
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{
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if (path_info.isDir())
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{
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dialog->setDirectory(path_info.absoluteFilePath());
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}
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else
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{
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dialog->setDirectory(path_info.absolutePath());
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dialog->selectFile(path_info.fileName());
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}
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}
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connect(dialog, &QFileDialog::fileSelected, this, &PathButton::onFileSelected);
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dialog->setAttribute(Qt::WA_DeleteOnClose);
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dialog->open();
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}
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void PathButton::onFileSelected(QString const& path)
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{
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if (!path.isEmpty())
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{
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setPath(path);
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}
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}
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void PathButton::updateAppearance()
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{
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QFileInfo const path_info(path_);
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int const icon_size(style()->pixelMetric(QStyle::PM_SmallIconSize));
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QFileIconProvider const icon_provider;
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QIcon icon;
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if (!path_.isEmpty() && path_info.exists())
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{
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icon = icon_provider.icon(QFileInfo(path_));
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}
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if (icon.isNull())
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{
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icon = icon_provider.icon(isDirMode() ? QFileIconProvider::Folder : QFileIconProvider::File);
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}
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setIconSize(QSize(icon_size, icon_size));
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setIcon(icon);
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setToolTip(path_ == text() ? QString() : path_);
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update();
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}
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bool PathButton::isDirMode() const
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{
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return mode_ == DirectoryMode;
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}
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QString PathButton::effectiveTitle() const
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{
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if (!title_.isEmpty())
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{
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return title_;
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}
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return isDirMode() ? tr("Select Folder") : tr("Select File");
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}
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