File indexing completed on 2021-12-23 10:45:19

 /*
  * SPDX-FileCopyrightText: 1999 Reginald Stadlbauer <reggie@kde.org>
  *
  * SPDX-License-Identifier: GPL-2.0-or-later
  */
 
 #include "kcharselectdia.h"
 
 #include <QAction>
 #include <QApplication>
 #include <QClipboard>
 #include <QDir>
 #include <QFontDatabase>
 #include <QGridLayout>
 #include <QIcon>
 #include <QMenu>
 
 #include <KActionCollection>
 #include <KBookmarkManager>
 #include <KBookmarkMenu>
 #include <KBookmarkOwner>
 #include <KConfigGroup>
 #include <KLocalizedString>
 #include <KSharedConfig>
 #include <KStandardAction>
 #include <KStandardShortcut>
 #include <KToggleAction>
 
 class KCharSelectBookmarkOwner : public KBookmarkOwner
 {
 public:
     KCharSelectBookmarkOwner(KCharSelectDia *dia)
         : d(dia)
     {
     }
     ~KCharSelectBookmarkOwner() override
     {
     }
 
     QString currentTitle() const override
     {
         uint ucs4 = d->charSelect->currentCodePoint();
         if (QChar::isPrint(ucs4)) {
             return QString::fromUcs4(&ucs4, 1) + QLatin1Char(' ') + formatCodePoint(ucs4);
         } else {
             return formatCodePoint(ucs4);
         }
     }
 
     QUrl currentUrl() const override
     {
         return QUrl(formatCodePoint(d->charSelect->currentCodePoint()));
     }
 
     void openBookmark(const KBookmark &bm, Qt::MouseButtons, Qt::KeyboardModifiers) override
     {
         QString c = bm.url().toString(QUrl::PreferLocalFile | QUrl::RemoveScheme);
         if (c.startsWith(QLatin1String("U+"))) {
             uint uc = c.midRef(2).toUInt(nullptr, 16);
             d->charSelect->setCurrentCodePoint(uc);
         }
     }
 
 private:
     static QString formatCodePoint(uint ucs4)
     {
         QString c = QString::number(ucs4, 16).toUpper();
         while (c.length() < 4) {
             c.prepend(QLatin1Char('0'));
         }
         return QStringLiteral("U+") + c;
     }
 
 private:
     KCharSelectDia *d;
 };
 
 /******************************************************************/
 /* class KCharSelectDia                                           */
 /******************************************************************/
 
 //==================================================================
 KCharSelectDia::KCharSelectDia(QWidget *parent)
     : KXmlGuiWindow(parent)
 {
     KSharedConfig::Ptr config = KSharedConfig::openConfig();
     KConfigGroup gr = config->group("General");
 
     vFont = gr.readEntry("selectedFont", QFontDatabase::systemFont(QFontDatabase::GeneralFont));
     vChr = gr.readEntry("char", 33);
     _rtl = gr.readEntry("rtl", false);
 
     QWidget *mainWidget = new QWidget(this);
     setCentralWidget(mainWidget);
 
     grid = new QGridLayout(mainWidget);
 
     // Add character selection widget from library kdeui
     charSelect = new KCharSelect(mainWidget, actionCollection());
     charSelect->setAllPlanesEnabled(true);
     charSelect->setCurrentCodePoint(vChr);
     charSelect->setCurrentFont(vFont);
     charSelect->resize(charSelect->sizeHint());
     connect(charSelect, &KCharSelect::currentCodePointChanged, this, &KCharSelectDia::charChanged);
     connect(charSelect, SIGNAL(codePointSelected(uint)), SLOT(add(uint)));
 
     connect(charSelect, &KCharSelect::currentFontChanged, this, &KCharSelectDia::fontSelected);
     grid->addWidget(charSelect, 0, 0, 1, 4);
 
     // Build line editor
     lined = new QLineEdit(mainWidget);
     lined->resize(lined->sizeHint());
     lined->setClearButtonEnabled(true);
 
     lined->setFont(vFont);
 
     connect(lined, &QLineEdit::textChanged, this, &KCharSelectDia::lineEditChanged);
     grid->addWidget(lined, 1, 0, 1, 3);
 
     bClip = new QPushButton(i18n("&To Clipboard"), mainWidget);
     bClip->setIcon(QIcon::fromTheme(QStringLiteral("edit-copy")));
     bClip->setFixedSize(bClip->sizeHint());
     connect(bClip, &QPushButton::clicked, this, &KCharSelectDia::toClip);
     grid->addWidget(bClip, 1, 3);
 
     // Build menu
     KStandardAction::quit(this, SLOT(close()), actionCollection());
 
     QAction *action = actionCollection()->addAction(QStringLiteral("copy_clip"));
     action->setText(i18n("&To Clipboard"));
     action->setIcon(QIcon::fromTheme(QStringLiteral("edit-copy")));
     connect(action, &QAction::triggered, this, &KCharSelectDia::toClip);
     actionCollection()->setDefaultShortcuts(action, KStandardShortcut::shortcut(KStandardShortcut::Copy));
 
     action = actionCollection()->addAction(QStringLiteral("copy_utf_8"));
     action->setText(i18n("To Clipboard &UTF-8"));
     connect(action, &QAction::triggered, this, &KCharSelectDia::toClipUTF8);
     action = actionCollection()->addAction(QStringLiteral("copy_html"));
     action->setText(i18n("To Clipboard &HTML"));
     connect(action, &QAction::triggered, this, &KCharSelectDia::toClipHTML);
 
     action = actionCollection()->addAction(QStringLiteral("from_clip"));
     action->setText(i18n("&From Clipboard"));
     action->setIcon(QIcon::fromTheme(QStringLiteral("edit-paste")));
     connect(action, &QAction::triggered, this, &KCharSelectDia::fromClip);
     actionCollection()->setDefaultShortcuts(action, KStandardShortcut::shortcut(KStandardShortcut::Paste));
     action = actionCollection()->addAction(QStringLiteral("from_clip_utf8"));
     action->setText(i18n("From Clipboard UTF-8"));
     connect(action, &QAction::triggered, this, &KCharSelectDia::fromClipUTF8);
 
     i18n("From Clipboard HTML"); // Intended for future use
 
     action = actionCollection()->addAction(QStringLiteral("flip"));
     action->setText(i18n("&Flip Text"));
     connect(action, &QAction::triggered, this, &KCharSelectDia::flipText);
 
     action = new KToggleAction(i18n("&Reverse Direction"), this);
     action->setChecked(_rtl);
     actionCollection()->addAction(QStringLiteral("rtl"), action);
     connect(action, &QAction::toggled, this, &KCharSelectDia::setRtl);
 
     charSelect->setFocus();
 
     if (_rtl)
         lined->setAlignment(Qt::AlignRight);
     else
         lined->setAlignment(Qt::AlignLeft);
 
     QString filename = QStandardPaths::locate(QStandardPaths::GenericDataLocation, QStringLiteral("kcharselect/bookmarks.xml"));
     if (filename.isEmpty()) {
         filename = QStandardPaths::writableLocation(QStandardPaths::GenericDataLocation) + QStringLiteral("/kcharselect");
         QDir().mkpath(filename);
         filename += QStringLiteral("/bookmarks.xml");
     }
     KBookmarkManager *manager = KBookmarkManager::managerForFile(filename, QStringLiteral("kcharselect"));
 
     action = actionCollection()->addAction(QStringLiteral("bookmarks"));
     action->setText(i18n("Bookmarks"));
     QMenu *bmmenu = new QMenu(this);
     action->setMenu(bmmenu);
 
     KBookmarkMenu *bm = new KBookmarkMenu(manager, new KCharSelectBookmarkOwner(this), bmmenu);
     actionCollection()->addActions(bmmenu->actions());
 
     bm->setParent(this);
 
     setupGUI(ToolBar | Keys | Save | Create);
 }
 
 //==================================================================
 void KCharSelectDia::closeEvent(QCloseEvent *event)
 {
     KSharedConfig::Ptr config = KSharedConfig::openConfig();
     KConfigGroup gr = config->group("General");
 
     gr.writeEntry("selectedFont", vFont);
     gr.writeEntry("char", vChr);
     gr.writeEntry("rtl", _rtl);
 
     KXmlGuiWindow::closeEvent(event);
 }
 
 //==================================================================
 void KCharSelectDia::charChanged(uint _chr)
 {
     vChr = _chr;
 }
 
 //==================================================================
 void KCharSelectDia::fontSelected(const QFont &_font)
 {
     lined->setFont(_font);
 
     vFont = _font;
 }
 
 //==================================================================
 void KCharSelectDia::add(uint _chr)
 {
     charChanged(_chr);
 
     QString str = lined->text();
     const int pos = lined->cursorPosition();
     str.insert(pos, QString::fromUcs4(&_chr, 1));
     lined->setText(str);
     lined->setCursorPosition(pos + QString::fromUcs4(&_chr, 1).size());
 }
 
 //==================================================================
 void KCharSelectDia::toClip()
 {
     QString str = lined->text();
     if (str.isEmpty())
         str = QString::fromUcs4(&vChr, 1);
     QClipboard *cb = QApplication::clipboard();
     cb->setText(str, QClipboard::Clipboard);
     cb->setText(str, QClipboard::Selection);
 }
 
 //==================================================================
 // UTF-8 is rapidly becoming the favored 8-bit encoding for
 // Unicode (iso10646-1).
 //
 void KCharSelectDia::toClipUTF8()
 {
     QClipboard *cb = QApplication::clipboard();
     QString str = lined->text();
     if (str.isEmpty())
         str = QString::fromUcs4(&vChr, 1);
     cb->setText(QLatin1String(str.toUtf8()));
 }
 
 //==================================================================
 //  Put valid HTML 4.0 into the clipboard.  Valid ISO-8859-1 Latin 1
 //  characters are left undisturbed.  Everything else, including the
 //  "c0 control characters" often used by Windows, are clipped
 //  as a HTML entity.
 //
 void KCharSelectDia::toClipHTML()
 {
     QClipboard *cb = QApplication::clipboard();
     QString input;
     QString html;
     QChar tempchar;
     int i = 0;
 
     input = lined->text();
     if (input.isEmpty())
         input = QString::fromUcs4(&vChr, 1);
     const int inputLength = input.length();
     for (i = 0; i < inputLength; ++i) {
         tempchar = input.at(i);
         if (tempchar.toLatin1() && ((tempchar.unicode() < 128) || (tempchar.unicode() >= 128 + 32))) {
             html.append(input.at(i));
         } else {
             html.append(QString::asprintf("&#x%x;", tempchar.unicode()));
         }
     }
     cb->setText(html);
 }
 
 //==================================================================
 //
 void KCharSelectDia::fromClip()
 {
     QClipboard *cb = QApplication::clipboard();
     lined->setText(cb->text());
 }
 
 //==================================================================
 // UTF-8 is rapidly becoming the favored 8-bit encoding for
 // Unicode (iso10646-1).  This function is handy for decoding
 // UTF-8 found in legacy applications, consoles, filenames, webpages,
 // etc.
 //
 void KCharSelectDia::fromClipUTF8()
 {
     QClipboard *cb = QApplication::clipboard();
     const QString str = cb->text();
 
     lined->setText(str.fromUtf8(str.toLatin1()));
 }
 
 //==================================================================
 //  Reverse the text held in the line edit buffer.  This is crucial
 //  for dealing with visual vs. logical representations of
 //  right to left languages, and handy for working around all
 //  manner of legacy character order issues.
 //
 void KCharSelectDia::flipText()
 {
     QString input;
     QString output;
     int i;
 
     input = lined->text();
     const int nbLength = input.length();
     for (i = 0; i < nbLength; ++i) {
         output.prepend(input.at(i));
     }
     lined->setText(output);
 }
 
 //==================================================================
 void KCharSelectDia::setRtl(bool rtl)
 {
     _rtl = rtl;
     if (_rtl)
         lined->setAlignment(Qt::AlignRight);
     else
         lined->setAlignment(Qt::AlignLeft);
 }
 
 //==================================================================
 void KCharSelectDia::lineEditChanged()
 {
     if (_rtl) {
         if (lined->cursorPosition())
             lined->setCursorPosition(lined->cursorPosition() - 1);
     }
 }