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/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtQuick module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** 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 Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QQUICKTEXT_P_P_H
#define QQUICKTEXT_P_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include "qquicktext_p.h"
#include "qquickimplicitsizeitem_p_p.h"
#include <QtQml/qqml.h>
#include <QtGui/qabstracttextdocumentlayout.h>
#include <QtGui/qtextlayout.h>
#include <private/qquickstyledtext_p.h>
#include <private/qlazilyallocated_p.h>
QT_BEGIN_NAMESPACE
class QTextLayout;
class QQuickTextDocumentWithImageResources;
class Q_AUTOTEST_EXPORT QQuickTextPrivate : public QQuickImplicitSizeItemPrivate
{
Q_DECLARE_PUBLIC(QQuickText)
public:
QQuickTextPrivate();
~QQuickTextPrivate();
void init();
void updateBaseline(qreal baseline, qreal dy);
void updateSize();
void updateLayout();
bool determineHorizontalAlignment();
bool setHAlign(QQuickText::HAlignment, bool forceAlign = false);
void mirrorChange();
bool isLineLaidOutConnected();
void setLineGeometry(QTextLine &line, qreal lineWidth, qreal &height);
QString elidedText(qreal lineWidth, const QTextLine &line, QTextLine *nextLine = 0) const;
void elideFormats(int start, int length, int offset, QList<QTextLayout::FormatRange> *elidedFormats);
void processHoverEvent(QHoverEvent *event);
QRectF layedOutTextRect;
struct ExtraData {
ExtraData();
qreal lineHeight;
QQuickTextDocumentWithImageResources *doc;
QString activeLink;
QString hoveredLink;
int minimumPixelSize;
int minimumPointSize;
int nbActiveDownloads;
int maximumLineCount;
QQuickText::LineHeightMode lineHeightMode;
QQuickText::FontSizeMode fontSizeMode;
};
QLazilyAllocated<ExtraData> extra;
QString text;
QUrl baseUrl;
QFont font;
QFont sourceFont;
QList<QQuickStyledTextImgTag*> imgTags;
QList<QQuickStyledTextImgTag*> visibleImgTags;
QTextLayout layout;
QTextLayout *elideLayout;
QQuickTextLine *textLine;
qreal lineWidth;
QRgb color;
QRgb linkColor;
QRgb styleColor;
int lineCount;
int multilengthEos;
enum UpdateType {
UpdateNone,
UpdatePreprocess,
UpdatePaintNode
};
QQuickText::TextElideMode elideMode;
QQuickText::HAlignment hAlign;
QQuickText::VAlignment vAlign;
QQuickText::TextFormat format;
QQuickText::WrapMode wrapMode;
QQuickText::TextStyle style;
QQuickText::RenderType renderType;
UpdateType updateType;
bool maximumLineCountValid:1;
bool updateOnComponentComplete:1;
bool richText:1;
bool styledText:1;
bool widthExceeded:1;
bool heightExceeded:1;
bool internalWidthUpdate:1;
bool requireImplicitSize:1;
bool implicitWidthValid:1;
bool implicitHeightValid:1;
bool truncated:1;
bool hAlignImplicit:1;
bool rightToLeftText:1;
bool layoutTextElided:1;
bool textHasChanged:1;
bool needToUpdateLayout:1;
bool formatModifiesFontSize:1;
bool polishSize:1; // Workaround for problem with polish called after updateSize (QTBUG-42636)
static const QChar elideChar;
virtual qreal getImplicitWidth() const;
virtual qreal getImplicitHeight() const;
void ensureDoc();
QRectF setupTextLayout(qreal * const baseline);
void setupCustomLineGeometry(QTextLine &line, qreal &height, int lineOffset = 0);
bool isLinkActivatedConnected();
bool isLinkHoveredConnected();
static QString anchorAt(const QTextLayout *layout, const QPointF &mousePos);
QString anchorAt(const QPointF &pos) const;
inline qreal lineHeight() const { return extra.isAllocated() ? extra->lineHeight : 1.0; }
inline int maximumLineCount() const { return extra.isAllocated() ? extra->maximumLineCount : INT_MAX; }
inline QQuickText::LineHeightMode lineHeightMode() const { return extra.isAllocated() ? extra->lineHeightMode : QQuickText::ProportionalHeight; }
inline QQuickText::FontSizeMode fontSizeMode() const { return extra.isAllocated() ? extra->fontSizeMode : QQuickText::FixedSize; }
inline int minimumPixelSize() const { return extra.isAllocated() ? extra->minimumPixelSize : 12; }
inline int minimumPointSize() const { return extra.isAllocated() ? extra->minimumPointSize : 12; }
static inline QQuickTextPrivate *get(QQuickText *t) { return t->d_func(); }
};
class QQuickPixmap;
class QQuickTextDocumentWithImageResources : public QTextDocument, public QTextObjectInterface
{
Q_OBJECT
Q_INTERFACES(QTextObjectInterface)
public:
QQuickTextDocumentWithImageResources(QQuickItem *parent);
virtual ~QQuickTextDocumentWithImageResources();
void setText(const QString &);
int resourcesLoading() const { return outstanding; }
QSizeF intrinsicSize(QTextDocument *doc, int posInDocument, const QTextFormat &format);
void drawObject(QPainter *p, const QRectF &rect, QTextDocument *doc, int posInDocument, const QTextFormat &format);
QImage image(const QTextImageFormat &format);
public Q_SLOTS:
void clearResources();
Q_SIGNALS:
void imagesLoaded();
protected:
QVariant loadResource(int type, const QUrl &name);
QQuickPixmap *loadPixmap(QQmlContext *context, const QUrl &name);
private Q_SLOTS:
void reset();
void requestFinished();
private:
QHash<QUrl, QQuickPixmap *> m_resources;
int outstanding;
static QSet<QUrl> errors;
};
QT_END_NAMESPACE
#endif // QQUICKTEXT_P_P_H
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