Alf Gaida
7 years ago
parent
3709bb882d
commit
e6892a6c73
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#include "lxqtfiledialoghelper.h"
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#include <libfm-qt/libfmqt.h>
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#include <libfm-qt/filedialog.h>
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#include <QWindow>
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#include <QDebug>
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#include <QTimer>
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#include <QSettings>
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#include <memory>
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static std::unique_ptr<Fm::LibFmQt> libfmQtContext_;
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LXQtFileDialogHelper::LXQtFileDialogHelper() {
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if(!libfmQtContext_) {
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// initialize libfm-qt only once
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libfmQtContext_ = std::unique_ptr<Fm::LibFmQt>{new Fm::LibFmQt()};
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}
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// can only be used after libfm-qt initialization
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dlg_ = std::unique_ptr<Fm::FileDialog>(new Fm::FileDialog());
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connect(dlg_.get(), &Fm::FileDialog::accepted, [this]() {
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saveSettings();
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accept();
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});
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connect(dlg_.get(), &Fm::FileDialog::rejected, [this]() {
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saveSettings();
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reject();
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});
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connect(dlg_.get(), &Fm::FileDialog::fileSelected, this, &LXQtFileDialogHelper::fileSelected);
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connect(dlg_.get(), &Fm::FileDialog::filesSelected, this, &LXQtFileDialogHelper::filesSelected);
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connect(dlg_.get(), &Fm::FileDialog::currentChanged, this, &LXQtFileDialogHelper::currentChanged);
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connect(dlg_.get(), &Fm::FileDialog::directoryEntered, this, &LXQtFileDialogHelper::directoryEntered);
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connect(dlg_.get(), &Fm::FileDialog::filterSelected, this, &LXQtFileDialogHelper::filterSelected);
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}
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LXQtFileDialogHelper::~LXQtFileDialogHelper() {
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}
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void LXQtFileDialogHelper::exec() {
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dlg_->exec();
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}
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bool LXQtFileDialogHelper::show(Qt::WindowFlags windowFlags, Qt::WindowModality windowModality, QWindow* parent) {
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dlg_->setAttribute(Qt::WA_NativeWindow, true); // without this, sometimes windowHandle() will return nullptr
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dlg_->setWindowFlags(windowFlags);
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dlg_->setWindowModality(windowModality);
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// Reference: KDE implementation
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// https://github.com/KDE/plasma-integration/blob/master/src/platformtheme/kdeplatformfiledialoghelper.cpp
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dlg_->windowHandle()->setTransientParent(parent);
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loadSettings();
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// central positioning with respect to the parent window
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if(parent && parent->isVisible()) {
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dlg_->move(parent->x() + (parent->width() - dlg_->width()) / 2,
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parent->y() + (parent->height() - dlg_->height()) / 2);
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}
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applyOptions();
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// NOTE: the timer here is required as a workaround borrowed from KDE. Without this, the dialog UI will be blocked.
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// QFileDialog calls our platform plugin to show our own native file dialog instead of showing its widget.
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// However, it still creates a hidden dialog internally, and then make it modal.
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// So user input from all other windows that are not the children of the QFileDialog widget will be blocked.
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// This includes our own dialog. After the return of this show() method, QFileDialog creates its own window and
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// then make it modal, which blocks our UI. The timer schedule a delayed popup of our file dialog, so we can
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// show again after QFileDialog and override the modal state. Then our UI can be unblocked.
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QTimer::singleShot(0, dlg_.get(), &QDialog::show);
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dlg_->setFocus();
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return true;
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}
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void LXQtFileDialogHelper::hide() {
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dlg_->hide();
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}
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bool LXQtFileDialogHelper::defaultNameFilterDisables() const {
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return false;
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}
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void LXQtFileDialogHelper::setDirectory(const QUrl& directory) {
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dlg_->setDirectory(directory);
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}
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QUrl LXQtFileDialogHelper::directory() const {
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return dlg_->directory();
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}
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void LXQtFileDialogHelper::selectFile(const QUrl& filename) {
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dlg_->selectFile(filename);
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}
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QList<QUrl> LXQtFileDialogHelper::selectedFiles() const {
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return dlg_->selectedFiles();
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}
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void LXQtFileDialogHelper::setFilter() {
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// FIXME: what's this?
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// The gtk+ 3 file dialog helper in Qt5 update options in this method.
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applyOptions();
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}
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void LXQtFileDialogHelper::selectNameFilter(const QString& filter) {
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dlg_->selectNameFilter(filter);
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}
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#if QT_VERSION >= QT_VERSION_CHECK(5, 9, 0)
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QString LXQtFileDialogHelper::selectedMimeTypeFilter() const {
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return dlg_->selectedMimeTypeFilter();
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}
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void LXQtFileDialogHelper::selectMimeTypeFilter(const QString& filter) {
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dlg_->selectMimeTypeFilter(filter);
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}
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#endif
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QString LXQtFileDialogHelper::selectedNameFilter() const {
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return dlg_->selectedNameFilter();
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}
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bool LXQtFileDialogHelper::isSupportedUrl(const QUrl& url) const {
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return dlg_->isSupportedUrl(url);
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}
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void LXQtFileDialogHelper::applyOptions() {
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auto& opt = options();
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// set title
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if(opt->windowTitle().isEmpty()) {
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dlg_->setWindowTitle(opt->acceptMode() == QFileDialogOptions::AcceptOpen ? tr("Open File")
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: tr("Save File"));
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}
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else {
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dlg_->setWindowTitle(opt->windowTitle());
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}
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dlg_->setFilter(opt->filter());
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dlg_->setViewMode(opt->viewMode() == QFileDialogOptions::Detail ? Fm::FolderView::DetailedListMode
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: Fm::FolderView::CompactMode);
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dlg_->setFileMode(QFileDialog::FileMode(opt->fileMode()));
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dlg_->setAcceptMode(QFileDialog::AcceptMode(opt->acceptMode())); // also sets a default label for accept button
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// bool useDefaultNameFilters() const;
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dlg_->setNameFilters(opt->nameFilters());
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if(!opt->mimeTypeFilters().empty()) {
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dlg_->setMimeTypeFilters(opt->mimeTypeFilters());
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}
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dlg_->setDefaultSuffix(opt->defaultSuffix());
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// QStringList history() const;
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// explicitly set labels
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for(int i = 0; i < QFileDialogOptions::DialogLabelCount; ++i) {
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auto label = static_cast<QFileDialogOptions::DialogLabel>(i);
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if(opt->isLabelExplicitlySet(label)) {
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dlg_->setLabelText(static_cast<QFileDialog::DialogLabel>(label), opt->labelText(label));
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}
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}
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auto url = opt->initialDirectory();
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if(url.isValid()) {
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dlg_->setDirectory(url);
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}
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#if QT_VERSION >= QT_VERSION_CHECK(5, 9, 0)
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auto filter = opt->initiallySelectedMimeTypeFilter();
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if(!filter.isEmpty()) {
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selectMimeTypeFilter(filter);
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}
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else {
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filter = opt->initiallySelectedNameFilter();
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if(!filter.isEmpty()) {
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selectNameFilter(opt->initiallySelectedNameFilter());
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}
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}
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#else
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auto filter = opt->initiallySelectedNameFilter();
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if(!filter.isEmpty()) {
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selectNameFilter(filter);
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}
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#endif
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auto selectedFiles = opt->initiallySelectedFiles();
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for(const auto& selectedFile: selectedFiles) {
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selectFile(selectedFile);
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}
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// QStringList supportedSchemes() const;
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}
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void LXQtFileDialogHelper::loadSettings() {
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QSettings settings(QSettings::UserScope, "lxqt", "filedialog");
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settings.beginGroup ("Sizes");
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dlg_->resize(settings.value("WindowSize", QSize(700, 500)).toSize());
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dlg_->setSplitterPos(settings.value("SplitterPos", 200).toInt());
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settings.endGroup();
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}
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void LXQtFileDialogHelper::saveSettings() {
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QSettings settings(QSettings::UserScope, "lxqt", "filedialog");
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settings.beginGroup ("Sizes");
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QSize windowSize = dlg_->size();
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if(settings.value("WindowSize") != windowSize) { // no redundant write
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settings.setValue("WindowSize", windowSize);
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}
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int splitterPos = dlg_->splitterPos();
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if(settings.value("SplitterPos") != splitterPos) {
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settings.setValue("SplitterPos", splitterPos);
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}
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settings.endGroup();
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}
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/*
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FileDialogPlugin::FileDialogPlugin() {
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}
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QPlatformFileDialogHelper *FileDialogPlugin::createHelper() {
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return new LXQtFileDialogHelper();
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}
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*/
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@ -0,0 +1,50 @@
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#ifndef LXQTFILEDIALOGHELPER_H
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#define LXQTFILEDIALOGHELPER_H
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#include <qpa/qplatformdialoghelper.h> // this private header is subject to changes
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#include <memory>
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namespace Fm {
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class FileDialog;
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}
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class Q_GUI_EXPORT LXQtFileDialogHelper : public QPlatformFileDialogHelper {
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Q_OBJECT
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public:
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LXQtFileDialogHelper();
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virtual ~LXQtFileDialogHelper();
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// QPlatformDialogHelper
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void exec() override;
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bool show(Qt::WindowFlags windowFlags, Qt::WindowModality windowModality, QWindow *parent) override;
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void hide() override;
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// QPlatformFileDialogHelper
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bool defaultNameFilterDisables() const override;
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void setDirectory(const QUrl &directory) override;
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QUrl directory() const override;
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void selectFile(const QUrl &filename) override;
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QList<QUrl> selectedFiles() const override;
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void setFilter() override;
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void selectNameFilter(const QString &filter) override;
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#if QT_VERSION >= QT_VERSION_CHECK(5, 9, 0)
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QString selectedMimeTypeFilter() const override;
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void selectMimeTypeFilter(const QString &filter) override;
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#endif
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QString selectedNameFilter() const override;
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bool isSupportedUrl(const QUrl &url) const override;
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private:
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void applyOptions();
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void loadSettings();
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void saveSettings();
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private:
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std::unique_ptr<Fm::FileDialog> dlg_;
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};
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#endif // LXQTFILEDIALOGHELPER_H
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