Say hello to QtQuick module

This change moves the QtQuick 2 types and C++ API (including
SceneGraph) to a new module (AKA library), QtQuick.

99% of this change is moving files from src/declarative to
src/quick, and from tests/auto/declarative to
tests/auto/qtquick2.

The loading of QtQuick 2 ("import QtQuick 2.0") is now delegated to
a plugin, src/imports/qtquick2, just like it's done for QtQuick 1.

All tools, examples, and tests that use QtQuick C++ API have gotten
"QT += quick" or "QT += quick-private" added to their .pro file.

A few additional internal QtDeclarative classes had to be exported
(via Q_DECLARATIVE_PRIVATE_EXPORT) since they're needed by the
QtQuick 2 implementation.

The old header locations (e.g. QtDeclarative/qquickitem.h) will
still be supported for some time, but will produce compile-time
warnings. (To avoid the QtQuick implementation using the
compatibility headers (since QtDeclarative's includepath comes
first), a few include statements were modified, e.g. from
"#include <qsgnode.h>" to "#include <QtQuick/qsgnode.h>".)

There's a change in qtbase that automatically adds QtQuick to the
module list if QtDeclarative is used. Together with the compatibility
headers, this should help reduce the migration pain for existing
projects.

In theory, simply getting an existing QtDeclarative-based project
to compile and link shouldn't require any changes for now -- but
porting to the new scheme is of course recommended, and will
eventually become mandatory.

Task-number: QTBUG-22889
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
Change-Id: Ia52be9373172ba2f37e7623231ecb060316c96a7
Reviewed-by: Kent Hansen <kent.hansen@nokia.com>
Reviewed-by: Sergio Ahumada <sergio.ahumada@nokia.com>

1 files changed, 624 insertions, 0 deletions

diff --git a/src/quick/util/qdeclarativestyledtext.cpp b/src/quick/util/qdeclarativestyledtext.cpp
new file mode 100644
index 0000000000..1c7ca5fbfd
--- /dev/null
+++ b/src/quick/util/qdeclarativestyledtext.cpp
@@ -0,0 +1,624 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtDeclarative module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** This file may be used under the terms of the GNU Lesser General Public
+** License version 2.1 as published by the Free Software Foundation and
+** appearing in the file LICENSE.LGPL included in the packaging of this
+** file. Please review the following information to ensure the GNU Lesser
+** General Public License version 2.1 requirements will be met:
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License version 3.0 as published by the Free Software Foundation
+** and appearing in the file LICENSE.GPL included in the packaging of this
+** file. Please review the following information to ensure the GNU General
+** Public License version 3.0 requirements will be met:
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QStack>
+#include <QVector>
+#include <QPainter>
+#include <QTextLayout>
+#include <QDebug>
+#include <qmath.h>
+#include "qdeclarativestyledtext_p.h"
+
+/*
+    QDeclarativeStyledText supports few tags:
+
+    <b></b> - bold
+    <i></i> - italic
+    <br> - new line
+    <p> - paragraph
+    <u> - underlined text
+    <font color="color_name" size="1-7"></font>
+    <h1> to <h6> - headers
+    <a href=""> - anchor
+    <ol type="">, <ul type=""> and <li> - ordered and unordered lists
+
+    The opening and closing tags must be correctly nested.
+*/
+
+QT_BEGIN_NAMESPACE
+
+class QDeclarativeStyledTextPrivate
+{
+public:
+    enum ListType { Ordered, Unordered };
+    enum ListFormat { Bullet, Disc, Square, Decimal, LowerAlpha, UpperAlpha, LowerRoman, UpperRoman };
+
+    struct List {
+        int level;
+        ListType type;
+        ListFormat format;
+    };
+
+    QDeclarativeStyledTextPrivate(const QString &t, QTextLayout &l)
+        : text(t), layout(l), baseFont(layout.font()), hasNewLine(false)
+    {
+    }
+
+    void parse();
+    bool parseTag(const QChar *&ch, const QString &textIn, QString &textOut, QTextCharFormat &format);
+    bool parseCloseTag(const QChar *&ch, const QString &textIn, QString &textOut);
+    void parseEntity(const QChar *&ch, const QString &textIn, QString &textOut);
+    bool parseFontAttributes(const QChar *&ch, const QString &textIn, QTextCharFormat &format);
+    bool parseOrderedListAttributes(const QChar *&ch, const QString &textIn);
+    bool parseUnorderedListAttributes(const QChar *&ch, const QString &textIn);
+    bool parseAnchorAttributes(const QChar *&ch, const QString &textIn, QTextCharFormat &format);
+    QPair<QStringRef,QStringRef> parseAttribute(const QChar *&ch, const QString &textIn);
+    QStringRef parseValue(const QChar *&ch, const QString &textIn);
+
+    inline void skipSpace(const QChar *&ch) {
+        while (ch->isSpace() && !ch->isNull())
+            ++ch;
+    }
+
+    static QString toAlpha(int value, bool upper);
+    static QString toRoman(int value, bool upper);
+
+    QString text;
+    QTextLayout &layout;
+    QFont baseFont;
+    QStack<List> listStack;
+    bool hasNewLine;
+
+    static const QChar lessThan;
+    static const QChar greaterThan;
+    static const QChar equals;
+    static const QChar singleQuote;
+    static const QChar doubleQuote;
+    static const QChar slash;
+    static const QChar ampersand;
+    static const QChar bullet;
+    static const QChar disc;
+    static const QChar square;
+    static const int tabsize = 6;
+};
+
+const QChar QDeclarativeStyledTextPrivate::lessThan(QLatin1Char('<'));
+const QChar QDeclarativeStyledTextPrivate::greaterThan(QLatin1Char('>'));
+const QChar QDeclarativeStyledTextPrivate::equals(QLatin1Char('='));
+const QChar QDeclarativeStyledTextPrivate::singleQuote(QLatin1Char('\''));
+const QChar QDeclarativeStyledTextPrivate::doubleQuote(QLatin1Char('\"'));
+const QChar QDeclarativeStyledTextPrivate::slash(QLatin1Char('/'));
+const QChar QDeclarativeStyledTextPrivate::ampersand(QLatin1Char('&'));
+const QChar QDeclarativeStyledTextPrivate::bullet(0x2022);
+const QChar QDeclarativeStyledTextPrivate::disc(0x25e6);
+const QChar QDeclarativeStyledTextPrivate::square(0x25a1);
+
+QDeclarativeStyledText::QDeclarativeStyledText(const QString &string, QTextLayout &layout)
+: d(new QDeclarativeStyledTextPrivate(string, layout))
+{
+}
+
+QDeclarativeStyledText::~QDeclarativeStyledText()
+{
+    delete d;
+}
+
+void QDeclarativeStyledText::parse(const QString &string, QTextLayout &layout)
+{
+    if (string.isEmpty())
+        return;
+    QDeclarativeStyledText styledText(string, layout);
+    styledText.d->parse();
+}
+
+void QDeclarativeStyledTextPrivate::parse()
+{
+    QList<QTextLayout::FormatRange> ranges;
+    QStack<QTextCharFormat> formatStack;
+
+    QString drawText;
+    drawText.reserve(text.count());
+
+    int textStart = 0;
+    int textLength = 0;
+    int rangeStart = 0;
+    const QChar *ch = text.constData();
+    while (!ch->isNull()) {
+        if (*ch == lessThan) {
+            if (textLength) {
+                QStringRef ref = QStringRef(&text, textStart, textLength);
+                const QChar *c = ref.constData();
+                bool isWhiteSpace = true;
+                for (int i = 0; isWhiteSpace && (i < textLength); ++c, ++i) {
+                    if (!c->isSpace())
+                        isWhiteSpace = false;
+                }
+                if (!isWhiteSpace) {
+                    drawText.append(ref);
+                    hasNewLine = false;
+                }
+            }
+            if (rangeStart != drawText.length() && formatStack.count()) {
+                QTextLayout::FormatRange formatRange;
+                formatRange.format = formatStack.top();
+                formatRange.start = rangeStart;
+                formatRange.length = drawText.length() - rangeStart;
+                ranges.append(formatRange);
+            }
+            rangeStart = drawText.length();
+            ++ch;
+            if (*ch == slash) {
+                ++ch;
+                if (parseCloseTag(ch, text, drawText)) {
+                    if (formatStack.count())
+                        formatStack.pop();
+                }
+            } else {
+                QTextCharFormat format;
+                if (formatStack.count())
+                    format = formatStack.top();
+                if (parseTag(ch, text, drawText, format))
+                    formatStack.push(format);
+            }
+            textStart = ch - text.constData() + 1;
+            textLength = 0;
+        } else if (*ch == ampersand) {
+            ++ch;
+            drawText.append(QStringRef(&text, textStart, textLength));
+            parseEntity(ch, text, drawText);
+            textStart = ch - text.constData() + 1;
+            textLength = 0;
+        } else {
+            ++textLength;
+        }
+        if (!ch->isNull())
+            ++ch;
+    }
+    if (textLength)
+        drawText.append(QStringRef(&text, textStart, textLength));
+    if (rangeStart != drawText.length() && formatStack.count()) {
+        QTextLayout::FormatRange formatRange;
+        formatRange.format = formatStack.top();
+        formatRange.start = rangeStart;
+        formatRange.length = drawText.length() - rangeStart;
+        ranges.append(formatRange);
+    }
+
+    layout.setText(drawText);
+    layout.setAdditionalFormats(ranges);
+}
+
+bool QDeclarativeStyledTextPrivate::parseTag(const QChar *&ch, const QString &textIn, QString &textOut, QTextCharFormat &format)
+{
+    skipSpace(ch);
+
+    int tagStart = ch - textIn.constData();
+    int tagLength = 0;
+    while (!ch->isNull()) {
+        if (*ch == greaterThan) {
+            if (tagLength == 0)
+                return false;
+            QStringRef tag(&textIn, tagStart, tagLength);
+            const QChar char0 = tag.at(0);
+            if (char0 == QLatin1Char('b')) {
+                if (tagLength == 1)
+                    format.setFontWeight(QFont::Bold);
+                else if (tagLength == 2 && tag.at(1) == QLatin1Char('r')) {
+                    textOut.append(QChar(QChar::LineSeparator));
+                    return false;
+                }
+            } else if (char0 == QLatin1Char('i')) {
+                if (tagLength == 1)
+                    format.setFontItalic(true);
+            } else if (char0 == QLatin1Char('p')) {
+                if (tagLength == 1) {
+                    if (!hasNewLine)
+                        textOut.append(QChar::LineSeparator);
+                }
+            } else if (char0 == QLatin1Char('u')) {
+                if (tagLength == 1)
+                    format.setFontUnderline(true);
+                else if (tag == QLatin1String("ul")) {
+                    List listItem;
+                    listItem.level = 0;
+                    listItem.type = Unordered;
+                    listItem.format = Bullet;
+                    listStack.push(listItem);
+                }
+            } else if (char0 == QLatin1Char('h') && tagLength == 2) {
+                int level = tag.at(1).digitValue();
+                if (level >= 1 && level <= 6) {
+                    static const qreal scaling[] = { 2.0, 1.5, 1.2, 1.0, 0.8, 0.7 };
+                    if (!hasNewLine)
+                        textOut.append(QChar::LineSeparator);
+                    format.setFontPointSize(baseFont.pointSize() * scaling[level - 1]);
+                    format.setFontWeight(QFont::Bold);
+                }
+            } else if (tag == QLatin1String("ol")) {
+                List listItem;
+                listItem.level = 0;
+                listItem.type = Ordered;
+                listItem.format = Decimal;
+                listStack.push(listItem);
+            } else if (tag == QLatin1String("li")) {
+                if (!hasNewLine)
+                    textOut.append(QChar(QChar::LineSeparator));
+                if (!listStack.isEmpty()) {
+                    int count = ++listStack.top().level;
+                    for (int i = 0; i < listStack.size(); ++i)
+                        textOut += QString(tabsize, QChar::Nbsp);
+                    switch (listStack.top().format) {
+                    case Decimal:
+                        textOut += QString::number(count) % QLatin1Char('.');
+                        break;
+                    case LowerAlpha:
+                        textOut += toAlpha(count, false) % QLatin1Char('.');
+                        break;
+                    case UpperAlpha:
+                        textOut += toAlpha(count, true) % QLatin1Char('.');
+                        break;
+                    case LowerRoman:
+                        textOut += toRoman(count, false) % QLatin1Char('.');
+                        break;
+                    case UpperRoman:
+                        textOut += toRoman(count, true) % QLatin1Char('.');
+                        break;
+                    case Bullet:
+                        textOut += bullet;
+                        break;
+                    case Disc:
+                        textOut += disc;
+                        break;
+                    case Square:
+                        textOut += square;
+                        break;
+                    }
+                    textOut += QString(2, QChar::Nbsp);
+                }
+            }
+            return true;
+        } else if (ch->isSpace()) {
+            // may have params.
+            QStringRef tag(&textIn, tagStart, tagLength);
+            if (tag == QLatin1String("font"))
+                return parseFontAttributes(ch, textIn, format);
+            if (tag == QLatin1String("ol"))
+                return parseOrderedListAttributes(ch, textIn);
+            if (tag == QLatin1String("ul"))
+                return parseUnorderedListAttributes(ch, textIn);
+            if (tag == QLatin1String("a")) {
+                return parseAnchorAttributes(ch, textIn, format);
+            }
+            if (*ch == greaterThan || ch->isNull())
+                continue;
+        } else if (*ch != slash) {
+            tagLength++;
+        }
+        ++ch;
+    }
+    return false;
+}
+
+bool QDeclarativeStyledTextPrivate::parseCloseTag(const QChar *&ch, const QString &textIn, QString &textOut)
+{
+    skipSpace(ch);
+
+    int tagStart = ch - textIn.constData();
+    int tagLength = 0;
+    while (!ch->isNull()) {
+        if (*ch == greaterThan) {
+            if (tagLength == 0)
+                return false;
+            QStringRef tag(&textIn, tagStart, tagLength);
+            const QChar char0 = tag.at(0);
+            hasNewLine = false;
+            if (char0 == QLatin1Char('b')) {
+                if (tagLength == 1)
+                    return true;
+                else if (tag.at(1) == QLatin1Char('r') && tagLength == 2)
+                    return true;
+            } else if (char0 == QLatin1Char('i')) {
+                if (tagLength == 1)
+                    return true;
+            } else if (char0 == QLatin1Char('a')) {
+                if (tagLength == 1)
+                    return true;
+            } else if (char0 == QLatin1Char('p')) {
+                if (tagLength == 1) {
+                    textOut.append(QChar::LineSeparator);
+                    hasNewLine = true;
+                    return true;
+                }
+            } else if (char0 == QLatin1Char('u')) {
+                if (tagLength == 1)
+                    return true;
+                else if (tag == QLatin1String("ul")) {
+                    if (!listStack.isEmpty()) {
+                        listStack.pop();
+                        if (!listStack.count())
+                            textOut.append(QChar::LineSeparator);
+                    }
+                    return true;
+                }
+            } else if (char0 == QLatin1Char('h') && tagLength == 2) {
+                textOut.append(QChar::LineSeparator);
+                hasNewLine = true;
+                return true;
+            } else if (tag == QLatin1String("font")) {
+                return true;
+            } else if (tag == QLatin1String("ol")) {
+                if (!listStack.isEmpty()) {
+                    listStack.pop();
+                    if (!listStack.count())
+                        textOut.append(QChar::LineSeparator);
+                }
+                return true;
+            } else if (tag == QLatin1String("li")) {
+                return true;
+            }
+            return false;
+        } else if (!ch->isSpace()){
+            tagLength++;
+        }
+        ++ch;
+    }
+
+    return false;
+}
+
+void QDeclarativeStyledTextPrivate::parseEntity(const QChar *&ch, const QString &textIn, QString &textOut)
+{
+    int entityStart = ch - textIn.constData();
+    int entityLength = 0;
+    while (!ch->isNull()) {
+        if (*ch == QLatin1Char(';')) {
+            QStringRef entity(&textIn, entityStart, entityLength);
+            if (entity == QLatin1String("gt"))
+                textOut += QChar(62);
+            else if (entity == QLatin1String("lt"))
+                textOut += QChar(60);
+            else if (entity == QLatin1String("amp"))
+                textOut += QChar(38);
+            return;
+        }
+        ++entityLength;
+        ++ch;
+    }
+}
+
+bool QDeclarativeStyledTextPrivate::parseFontAttributes(const QChar *&ch, const QString &textIn, QTextCharFormat &format)
+{
+    bool valid = false;
+    QPair<QStringRef,QStringRef> attr;
+    do {
+        attr = parseAttribute(ch, textIn);
+        if (attr.first == QLatin1String("color")) {
+            valid = true;
+            format.setForeground(QColor(attr.second.toString()));
+        } else if (attr.first == QLatin1String("size")) {
+            valid = true;
+            int size = attr.second.toString().toInt();
+            if (attr.second.at(0) == QLatin1Char('-') || attr.second.at(0) == QLatin1Char('+'))
+                size += 3;
+            if (size >= 1 && size <= 7) {
+                static const qreal scaling[] = { 0.7, 0.8, 1.0, 1.2, 1.5, 2.0, 2.4 };
+                format.setFontPointSize(baseFont.pointSize() * scaling[size-1]);
+            }
+        }
+    } while (!ch->isNull() && !attr.first.isEmpty());
+
+    return valid;
+}
+
+bool QDeclarativeStyledTextPrivate::parseOrderedListAttributes(const QChar *&ch, const QString &textIn)
+{
+    bool valid = false;
+
+    List listItem;
+    listItem.level = 0;
+    listItem.type = Ordered;
+    listItem.format = Decimal;
+
+    QPair<QStringRef,QStringRef> attr;
+    do {
+        attr = parseAttribute(ch, textIn);
+        if (attr.first == QLatin1String("type")) {
+            valid = true;
+            if (attr.second == QLatin1String("a"))
+                listItem.format = LowerAlpha;
+            else if (attr.second == QLatin1String("A"))
+                listItem.format = UpperAlpha;
+            else if (attr.second == QLatin1String("i"))
+                listItem.format = LowerRoman;
+            else if (attr.second == QLatin1String("I"))
+                listItem.format = UpperRoman;
+        }
+    } while (!ch->isNull() && !attr.first.isEmpty());
+
+    listStack.push(listItem);
+    return valid;
+}
+
+bool QDeclarativeStyledTextPrivate::parseUnorderedListAttributes(const QChar *&ch, const QString &textIn)
+{
+    bool valid = false;
+
+    List listItem;
+    listItem.level = 0;
+    listItem.type = Unordered;
+    listItem.format = Bullet;
+
+    QPair<QStringRef,QStringRef> attr;
+    do {
+        attr = parseAttribute(ch, textIn);
+        if (attr.first == QLatin1String("type")) {
+            valid = true;
+            if (attr.second == QLatin1String("disc"))
+                listItem.format = Disc;
+            else if (attr.second == QLatin1String("square"))
+                listItem.format = Square;
+        }
+    } while (!ch->isNull() && !attr.first.isEmpty());
+
+    listStack.push(listItem);
+    return valid;
+}
+
+bool QDeclarativeStyledTextPrivate::parseAnchorAttributes(const QChar *&ch, const QString &textIn, QTextCharFormat &format)
+{
+    bool valid = false;
+
+    QPair<QStringRef,QStringRef> attr;
+    do {
+        attr = parseAttribute(ch, textIn);
+        if (attr.first == QLatin1String("href")) {
+            format.setAnchorHref(attr.second.toString());
+            format.setAnchor(true);
+            format.setFontUnderline(true);
+            format.setForeground(QColor("blue"));
+            valid = true;
+        }
+    } while (!ch->isNull() && !attr.first.isEmpty());
+
+    return valid;
+}
+
+QPair<QStringRef,QStringRef> QDeclarativeStyledTextPrivate::parseAttribute(const QChar *&ch, const QString &textIn)
+{
+    skipSpace(ch);
+
+    int attrStart = ch - textIn.constData();
+    int attrLength = 0;
+    while (!ch->isNull()) {
+        if (*ch == greaterThan) {
+            break;
+        } else if (*ch == equals) {
+            ++ch;
+            if (*ch != singleQuote && *ch != doubleQuote) {
+                while (*ch != greaterThan && !ch->isNull())
+                    ++ch;
+                break;
+            }
+            ++ch;
+            if (!attrLength)
+                break;
+            QStringRef attr(&textIn, attrStart, attrLength);
+            QStringRef val = parseValue(ch, textIn);
+            if (!val.isEmpty())
+                return QPair<QStringRef,QStringRef>(attr,val);
+            break;
+        } else {
+            ++attrLength;
+        }
+        ++ch;
+    }
+
+    return QPair<QStringRef,QStringRef>();
+}
+
+QStringRef QDeclarativeStyledTextPrivate::parseValue(const QChar *&ch, const QString &textIn)
+{
+    int valStart = ch - textIn.constData();
+    int valLength = 0;
+    while (*ch != singleQuote && *ch != doubleQuote && !ch->isNull()) {
+        ++valLength;
+        ++ch;
+    }
+    if (ch->isNull())
+        return QStringRef();
+    ++ch; // skip quote
+
+    return QStringRef(&textIn, valStart, valLength);
+}
+
+QString QDeclarativeStyledTextPrivate::toAlpha(int value, bool upper)
+{
+    const char baseChar = upper ? 'A' : 'a';
+
+    QString result;
+    int c = value;
+    while (c > 0) {
+        c--;
+        result.prepend(QChar(baseChar + (c % 26)));
+        c /= 26;
+    }
+    return result;
+}
+
+QString QDeclarativeStyledTextPrivate::toRoman(int value, bool upper)
+{
+    QString result = QLatin1String("?");
+    // works for up to 4999 items
+    if (value < 5000) {
+        QByteArray romanNumeral;
+
+        static const char romanSymbolsLower[] = "iiivixxxlxcccdcmmmm";
+        static const char romanSymbolsUpper[] = "IIIVIXXXLXCCCDCMMMM";
+        QByteArray romanSymbols;
+        if (!upper)
+            romanSymbols = QByteArray::fromRawData(romanSymbolsLower, sizeof(romanSymbolsLower));
+        else
+            romanSymbols = QByteArray::fromRawData(romanSymbolsUpper, sizeof(romanSymbolsUpper));
+
+        int c[] = { 1, 4, 5, 9, 10, 40, 50, 90, 100, 400, 500, 900, 1000 };
+        int n = value;
+        for (int i = 12; i >= 0; n %= c[i], i--) {
+            int q = n / c[i];
+            if (q > 0) {
+                int startDigit = i + (i + 3) / 4;
+                int numDigits;
+                if (i % 4) {
+                    if ((i - 2) % 4)
+                        numDigits = 2;
+                    else
+                        numDigits = 1;
+                }
+                else
+                    numDigits = q;
+                romanNumeral.append(romanSymbols.mid(startDigit, numDigits));
+            }
+        }
+        result = QString::fromLatin1(romanNumeral);
+    }
+    return result;
+}
+
+QT_END_NAMESPACE