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Diffstat (limited to 'examples/widgets/tools/codecs/encodingdialog.cpp')
| -rw-r--r-- | examples/widgets/tools/codecs/encodingdialog.cpp | 333 |
1 files changed, 0 insertions, 333 deletions
diff --git a/examples/widgets/tools/codecs/encodingdialog.cpp b/examples/widgets/tools/codecs/encodingdialog.cpp deleted file mode 100644 index aa57d47dc7..0000000000 --- a/examples/widgets/tools/codecs/encodingdialog.cpp +++ /dev/null @@ -1,333 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2018 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the examples of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:BSD$ -** Commercial License Usage -** Licensees holding valid commercial Qt licenses may use this file in -** accordance with the commercial license agreement provided with the -** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and The Qt Company. For licensing terms -** and conditions see https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/contact-us. -** -** BSD License Usage -** Alternatively, you may use this file under the terms of the BSD license -** as follows: -** -** "Redistribution and use in source and binary forms, with or without -** modification, are permitted provided that the following conditions are -** met: -** * Redistributions of source code must retain the above copyright -** notice, this list of conditions and the following disclaimer. -** * Redistributions in binary form must reproduce the above copyright -** notice, this list of conditions and the following disclaimer in -** the documentation and/or other materials provided with the -** distribution. -** * Neither the name of The Qt Company Ltd nor the names of its -** contributors may be used to endorse or promote products derived -** from this software without specific prior written permission. -** -** -** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "encodingdialog.h" - -#if QT_CONFIG(action) -# include <QAction> -#endif -#include <QDialogButtonBox> -#include <QFormLayout> -#include <QLabel> -#include <QLineEdit> -#include <QVBoxLayout> - -#if QT_CONFIG(clipboard) -# include <QGuiApplication> -# include <QClipboard> -#endif - -#include <QTextStream> - -// Helpers for formatting character sequences - -// Format a special character like '\x0a' -template <class Int> -static void formatEscapedNumber(QTextStream &str, Int value, int base, - int width = 0,char prefix = 0) -{ - str << '\\'; - if (prefix) - str << prefix; - const auto oldPadChar = str.padChar(); - const auto oldFieldWidth = str.fieldWidth(); - const auto oldFieldAlignment = str.fieldAlignment(); - const auto oldIntegerBase = str.integerBase(); - str.setPadChar(QLatin1Char('0')); - str.setFieldWidth(width); - str.setFieldAlignment(QTextStream::AlignRight); - str.setIntegerBase(base); - str << value; - str.setIntegerBase(oldIntegerBase); - str.setFieldAlignment(oldFieldAlignment); - str.setFieldWidth(oldFieldWidth); - str.setPadChar(oldPadChar); -} - -template <class Int> -static bool formatSpecialCharacter(QTextStream &str, Int value) -{ - bool result = true; - switch (value) { - case '\\': - str << "\\\\"; - break; - case '\"': - str << "\\\""; - break; - case '\n': - str << "\\n"; - break; - default: - result = false; - break; - } - return result; -} - -// Format a sequence of characters (QChar, ushort (UTF-16), uint (UTF-32) -// or just char (Latin1, Utf-8)) with the help of traits specifying -// how to obtain the code for checking the printable-ness and how to -// stream out the plain ASCII values. - -template <EncodingDialog::Encoding> -struct FormattingTraits -{ -}; - -template <> -struct FormattingTraits<EncodingDialog::Unicode> -{ - static ushort code(QChar c) { return c.unicode(); } - static char toAscii(QChar c) { return c.toLatin1(); } -}; - -template <> -struct FormattingTraits<EncodingDialog::Utf8> -{ - static ushort code(char c) { return uchar(c); } - static char toAscii(char c) { return c; } -}; - -template <> -struct FormattingTraits<EncodingDialog::Utf16> -{ - static ushort code(ushort c) { return c; } - static char toAscii(ushort c) { return char(c); } -}; - -template <> -struct FormattingTraits<EncodingDialog::Utf32> -{ - static uint code(uint c) { return c; } - static char toAscii(uint c) { return char(c); } -}; - -template <> -struct FormattingTraits<EncodingDialog::Latin1> -{ - static uchar code(char c) { return uchar(c); } - static char toAscii(char c) { return c; } -}; - -static bool isHexDigit(char c) -{ - return (c >= '0' && c <= '9') || (c >= 'a' && c <= 'f') - || (c >= 'A' && c <= 'F'); -} - -template <EncodingDialog::Encoding encoding, class Iterator> -static void formatStringSequence(QTextStream &str, Iterator i1, Iterator i2, - int escapeIntegerBase, int escapeWidth, - char escapePrefix = 0) -{ - str << '"'; - bool separateHexEscape = false; - for (; i1 != i2; ++i1) { - const auto code = FormattingTraits<encoding>::code(*i1); - if (code >= 0x80) { - formatEscapedNumber(str, code, escapeIntegerBase, escapeWidth, escapePrefix); - separateHexEscape = escapeIntegerBase == 16 && escapeWidth == 0; - } else { - if (!formatSpecialCharacter(str, code)) { - const char c = FormattingTraits<encoding>::toAscii(*i1); - // For variable width/hex: Terminate the literal to stop digit parsing - // ("\x12" "34..."). - if (separateHexEscape && isHexDigit(c)) - str << "\" \""; - str << c; - } - separateHexEscape = false; - } - } - str << '"'; -} - -static QString encodedString(const QString &value, EncodingDialog::Encoding e) -{ - QString result; - QTextStream str(&result); - switch (e) { - case EncodingDialog::Unicode: - formatStringSequence<EncodingDialog::Unicode>(str, value.cbegin(), value.cend(), - 16, 4, 'u'); - break; - case EncodingDialog::Utf8: { - const QByteArray utf8 = value.toUtf8(); - str << "u8"; - formatStringSequence<EncodingDialog::Utf8>(str, utf8.cbegin(), utf8.cend(), - 8, 3); - } - break; - case EncodingDialog::Utf16: { - auto utf16 = value.utf16(); - auto utf16End = utf16 + value.size(); - str << 'u'; - formatStringSequence<EncodingDialog::Utf16>(str, utf16, utf16End, - 16, 0, 'x'); - } - break; - case EncodingDialog::Utf32: { - auto utf32 = value.toUcs4(); - str << 'U'; - formatStringSequence<EncodingDialog::Utf32>(str, utf32.cbegin(), utf32.cend(), - 16, 0, 'x'); - } - break; - case EncodingDialog::Latin1: { - const QByteArray latin1 = value.toLatin1(); - formatStringSequence<EncodingDialog::Latin1>(str, latin1.cbegin(), latin1.cend(), - 16, 0, 'x'); - } - break; - case EncodingDialog::EncodingCount: - break; - } - return result; -} - -// Dialog helpers - -static const char *encodingLabels[] -{ - QT_TRANSLATE_NOOP("EncodingDialog", "Unicode:"), - QT_TRANSLATE_NOOP("EncodingDialog", "UTF-8:"), - QT_TRANSLATE_NOOP("EncodingDialog", "UTF-16:"), - QT_TRANSLATE_NOOP("EncodingDialog", "UTF-32:"), - QT_TRANSLATE_NOOP("EncodingDialog", "Latin1:") -}; - -static const char *encodingToolTips[] -{ - QT_TRANSLATE_NOOP("EncodingDialog", "Unicode points for use with any encoding (C++, Python)"), - QT_TRANSLATE_NOOP("EncodingDialog", "QString::fromUtf8()"), - QT_TRANSLATE_NOOP("EncodingDialog", "wchar_t on Windows, char16_t everywhere"), - QT_TRANSLATE_NOOP("EncodingDialog", "wchar_t on Unix (Ucs4)"), - QT_TRANSLATE_NOOP("EncodingDialog", "QLatin1String") -}; - -// A read-only line edit with a tool button to copy the contents -class DisplayLineEdit : public QLineEdit -{ - Q_OBJECT -public: - explicit DisplayLineEdit(const QIcon &icon, QWidget *parent = nullptr); - -public slots: - void copyAll(); -}; - -DisplayLineEdit::DisplayLineEdit(const QIcon &icon, QWidget *parent) : - QLineEdit(parent) -{ - setReadOnly(true); -#if QT_CONFIG(clipboard) && QT_CONFIG(action) - auto copyAction = addAction(icon, QLineEdit::TrailingPosition); - connect(copyAction, &QAction::triggered, this, &DisplayLineEdit::copyAll); -#endif -} - -void DisplayLineEdit::copyAll() -{ -#if QT_CONFIG(clipboard) - QGuiApplication::clipboard()->setText(text()); -#endif -} - -static void addFormLayoutRow(QFormLayout *formLayout, const QString &text, - QWidget *w, const QString &toolTip) -{ - auto label = new QLabel(text); - label->setToolTip(toolTip); - w->setToolTip(toolTip); - label->setBuddy(w); - formLayout->addRow(label, w); -} - -EncodingDialog::EncodingDialog(QWidget *parent) : - QDialog(parent) -{ - setWindowFlags(windowFlags() & ~Qt::WindowContextHelpButtonHint); - setWindowTitle(tr("Encodings")); - - auto formLayout = new QFormLayout; - auto sourceLineEdit = new QLineEdit(this); - sourceLineEdit->setClearButtonEnabled(true); - connect(sourceLineEdit, &QLineEdit::textChanged, this, &EncodingDialog::textChanged); - - addFormLayoutRow(formLayout, tr("&Source:"), sourceLineEdit, tr("Enter text")); - - const auto copyIcon = QIcon::fromTheme(QLatin1String("edit-copy"), - QIcon(QLatin1String(":/images/editcopy"))); - for (int i = 0; i < EncodingCount; ++i) { - m_lineEdits[i] = new DisplayLineEdit(copyIcon, this); - addFormLayoutRow(formLayout, tr(encodingLabels[i]), - m_lineEdits[i], tr(encodingToolTips[i])); - } - - auto mainLayout = new QVBoxLayout(this); - mainLayout->addLayout(formLayout); - auto buttonBox = new QDialogButtonBox(QDialogButtonBox::Close); - connect(buttonBox, &QDialogButtonBox::rejected, this, &QDialog::reject); - mainLayout->addWidget(buttonBox); -} - -void EncodingDialog::textChanged(const QString &t) -{ - if (t.isEmpty()) { - for (auto lineEdit : m_lineEdits) - lineEdit->clear(); - } else { - for (int i = 0; i < EncodingCount; ++i) - m_lineEdits[i]->setText(encodedString(t, static_cast<Encoding>(i))); - } -} - -#include "encodingdialog.moc" |