/**************************************************************************** ** ** Copyright (C) 2016 The Qt Company Ltd. ** Contact: https://www.qt.io/licensing/ ** ** This file is part of the QtQuick module of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:LGPL$ ** 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. ** ** GNU Lesser General Public License Usage ** Alternatively, this file may be used under the terms of the GNU Lesser ** General Public License version 3 as published by the Free Software ** Foundation and appearing in the file LICENSE.LGPL3 included in the ** packaging of this file. Please review the following information to ** ensure the GNU Lesser General Public License version 3 requirements ** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. ** ** GNU General Public License Usage ** Alternatively, this file may be used under the terms of the GNU ** General Public License version 2.0 or (at your option) the GNU General ** Public license version 3 or any later version approved by the KDE Free ** Qt Foundation. The licenses are as published by the Free Software ** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 ** included in the packaging of this file. Please review the following ** information to ensure the GNU General Public License requirements will ** be met: https://www.gnu.org/licenses/gpl-2.0.html and ** https://www.gnu.org/licenses/gpl-3.0.html. ** ** $QT_END_LICENSE$ ** ****************************************************************************/ #include #include #include #include #include #include #include #include "qquickclipnode_p.h" #include "qquicktextnode_p.h" #ifndef QQUICKTEXTNODEENGINE_P_H #define QQUICKTEXTNODEENGINE_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. // QT_BEGIN_NAMESPACE // Engine that takes glyph runs as input, and produces a set of glyph nodes, clip nodes, // and rectangle nodes to represent the text, decorations and selection. Will try to minimize // number of nodes, and join decorations in neighbouring items class QQuickTextNodeEngine { public: enum Decoration { NoDecoration = 0x0, Underline = 0x1, Overline = 0x2, StrikeOut = 0x4, Background = 0x8 }; Q_DECLARE_FLAGS(Decorations, Decoration) enum SelectionState { Unselected, Selected }; struct BinaryTreeNode { BinaryTreeNode() : selectionState(Unselected), clipNode(0), decorations(Decoration::NoDecoration) , ascent(0.0), leftChildIndex(-1), rightChildIndex(-1) { } BinaryTreeNode(const QRectF &brect, const QImage &i, SelectionState selState, qreal a) : boundingRect(brect), selectionState(selState), clipNode(0), decorations(Decoration::NoDecoration) , image(i), ascent(a), leftChildIndex(-1), rightChildIndex(-1) { } BinaryTreeNode(const QGlyphRun &g, SelectionState selState, const QRectF &brect, const Decorations &decs, const QColor &c, const QColor &bc, const QPointF &pos, qreal a); QGlyphRun glyphRun; QRectF boundingRect; SelectionState selectionState; QQuickDefaultClipNode *clipNode; Decorations decorations; QColor color; QColor backgroundColor; QPointF position; QImage image; qreal ascent; int leftChildIndex; int rightChildIndex; QList > ranges; static void insert(QVarLengthArray *binaryTree, const QRectF &rect, const QImage &image, qreal ascent, SelectionState selectionState) { insert(binaryTree, BinaryTreeNode(rect, image, selectionState, ascent)); } static void insert(QVarLengthArray *binaryTree, const QGlyphRun &glyphRun, SelectionState selectionState, Decorations decorations, const QColor &textColor, const QColor &backgroundColor, const QPointF &position); static void insert(QVarLengthArray *binaryTree, const BinaryTreeNode &binaryTreeNode); static void inOrder(const QVarLengthArray &binaryTree, QVarLengthArray *sortedIndexes, int currentIndex = 0); }; struct BinaryTreeNodeKey { BinaryTreeNodeKey(BinaryTreeNode *node); bool operator==(const BinaryTreeNodeKey &otherKey) const { return fontEngine == otherKey.fontEngine && clipNode == otherKey.clipNode && color == otherKey.color && selectionState == otherKey.selectionState; } QFontEngine *fontEngine; QQuickDefaultClipNode *clipNode; QRgb color; int selectionState; }; QQuickTextNodeEngine() : m_currentTextDirection(Qt::LeftToRight) , m_hasSelection(false) , m_hasContents(false) {} bool hasContents() const { return m_hasContents; } void addTextBlock(QTextDocument *, const QTextBlock &, const QPointF &position, const QColor &textColor, const QColor& anchorColor, int selectionStart, int selectionEnd); QTextLine currentLine() const { return m_currentLine; } void setCurrentLine(const QTextLine ¤tLine) { if (m_currentLine.isValid()) processCurrentLine(); m_currentLine = currentLine; } void setCurrentTextDirection(Qt::LayoutDirection textDirection) { m_currentTextDirection = textDirection; } void addBorder(const QRectF &rect, qreal border, QTextFrameFormat::BorderStyle borderStyle, const QBrush &borderBrush); void addFrameDecorations(QTextDocument *document, QTextFrame *frame); void addImage(const QRectF &rect, const QImage &image, qreal ascent, SelectionState selectionState, QTextFrameFormat::Position layoutPosition); int addText(const QTextBlock &block, const QTextCharFormat &charFormat, const QColor &textColor, const QVarLengthArray &colorChanges, int textPos, int fragmentEnd, int selectionStart, int selectionEnd); void addTextObject(const QPointF &position, const QTextCharFormat &format, SelectionState selectionState, QTextDocument *textDocument, int pos, QTextFrameFormat::Position layoutPosition = QTextFrameFormat::InFlow); void addSelectedGlyphs(const QGlyphRun &glyphRun); void addUnselectedGlyphs(const QGlyphRun &glyphRun); void addGlyphsInRange(int rangeStart, int rangeEnd, const QColor &color, const QColor &backgroundColor, int selectionStart, int selectionEnd); void addGlyphsForRanges(const QVarLengthArray &ranges, int start, int end, int selectionStart, int selectionEnd); void mergeProcessedNodes(QList *regularNodes, QList *imageNodes); void addToSceneGraph(QQuickTextNode *parent, QQuickText::TextStyle style = QQuickText::Normal, const QColor &styleColor = QColor()); void setSelectionColor(const QColor &selectionColor) { m_selectionColor = selectionColor; } void setSelectedTextColor(const QColor &selectedTextColor) { m_selectedTextColor = selectedTextColor; } void setTextColor(const QColor &textColor) { m_textColor = textColor; } void setAnchorColor(const QColor &anchorColor) { m_anchorColor = anchorColor; } void setPosition(const QPointF &position) { m_position = position; } private: struct TextDecoration { TextDecoration() : selectionState(Unselected) {} TextDecoration(const SelectionState &s, const QRectF &r, const QColor &c) : selectionState(s) , rect(r) , color(c) { } SelectionState selectionState; QRectF rect; QColor color; }; void processCurrentLine(); void addTextDecorations(const QVarLengthArray &textDecorations, qreal offset, qreal thickness); void mergeFormats(QTextLayout *textLayout, QVarLengthArray *mergedFormats); QColor m_selectionColor; QColor m_textColor; QColor m_backgroundColor; QColor m_selectedTextColor; QColor m_anchorColor; QPointF m_position; QTextLine m_currentLine; Qt::LayoutDirection m_currentTextDirection; QList > m_backgrounds; QList m_selectionRects; QVarLengthArray m_currentLineTree; QList m_lines; QVector m_processedNodes; bool m_hasSelection : 1; bool m_hasContents : 1; friend class QQuickTextNode; }; QT_END_NAMESPACE #endif // QQUICKTEXTNODEENGINE_P_H