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Diffstat (limited to 'src/declarative/items/qquicktextnode.cpp')
| -rw-r--r-- | src/declarative/items/qquicktextnode.cpp | 1344 |
1 files changed, 0 insertions, 1344 deletions
diff --git a/src/declarative/items/qquicktextnode.cpp b/src/declarative/items/qquicktextnode.cpp deleted file mode 100644 index 56c3b54cd7..0000000000 --- a/src/declarative/items/qquicktextnode.cpp +++ /dev/null @@ -1,1344 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2010 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 "qquicktextnode_p.h" -#include "qsgsimplerectnode.h" -#include <private/qsgadaptationlayer_p.h> -#include <private/qsgdistancefieldglyphnode_p.h> - -#include <private/qsgcontext_p.h> - -#include <QtCore/qpoint.h> -#include <qmath.h> -#include <qtextdocument.h> -#include <qtextlayout.h> -#include <qabstracttextdocumentlayout.h> -#include <qxmlstream.h> -#include <qrawfont.h> -#include <qtexttable.h> -#include <qtextlist.h> -#include <private/qdeclarativestyledtext_p.h> -#include <private/qfont_p.h> -#include <private/qfontengine_p.h> -#include <private/qrawfont_p.h> -#include <private/qtextimagehandler_p.h> -#include <private/qtextdocumentlayout_p.h> -#include <qhash.h> - -QT_BEGIN_NAMESPACE - -/*! - Creates an empty QQuickTextNode -*/ -QQuickTextNode::QQuickTextNode(QSGContext *context) - : m_context(context), m_cursorNode(0) -{ -#if defined(QML_RUNTIME_TESTING) - description = QLatin1String("text"); -#endif -} - -QQuickTextNode::~QQuickTextNode() -{ - qDeleteAll(m_textures); -} - -#if 0 -void QQuickTextNode::setColor(const QColor &color) -{ - if (m_usePixmapCache) { - setUpdateFlag(UpdateNodes); - } else { - for (QSGNode *childNode = firstChild(); childNode; childNode = childNode->nextSibling()) { - if (childNode->subType() == GlyphNodeSubType) { - QSGGlyphNode *glyphNode = static_cast<QSGGlyphNode *>(childNode); - if (glyphNode->color() == m_color) - glyphNode->setColor(color); - } else if (childNode->subType() == SolidRectNodeSubType) { - QSGSimpleRectNode *solidRectNode = static_cast<QSGSimpleRectNode *>(childNode); - if (solidRectNode->color() == m_color) - solidRectNode->setColor(color); - } - } - } - m_color = color; -} - -void QQuickTextNode::setStyleColor(const QColor &styleColor) -{ - if (m_textStyle != QQuickTextNode::NormalTextStyle) { - if (m_usePixmapCache) { - setUpdateFlag(UpdateNodes); - } else { - for (QSGNode *childNode = firstChild(); childNode; childNode = childNode->nextSibling()) { - if (childNode->subType() == GlyphNodeSubType) { - QSGGlyphNode *glyphNode = static_cast<QSGGlyphNode *>(childNode); - if (glyphNode->color() == m_styleColor) - glyphNode->setColor(styleColor); - } else if (childNode->subType() == SolidRectNodeSubType) { - QSGSimpleRectNode *solidRectNode = static_cast<QSGSimpleRectNode *>(childNode); - if (solidRectNode->color() == m_styleColor) - solidRectNode->setColor(styleColor); - } - } - } - } - m_styleColor = styleColor; -} -#endif - -QSGGlyphNode *QQuickTextNode::addGlyphs(const QPointF &position, const QGlyphRun &glyphs, const QColor &color, - QQuickText::TextStyle style, const QColor &styleColor, - QSGNode *parentNode) -{ - QSGGlyphNode *node = m_context->createGlyphNode(); - node->setGlyphs(position + QPointF(0, glyphs.rawFont().ascent()), glyphs); - node->setStyle(style); - node->setStyleColor(styleColor); - node->setColor(color); - node->update(); - - /* We flag the geometry as static, but we never call markVertexDataDirty - or markIndexDataDirty on them. This is because all text nodes are - discarded when a change occurs. If we start appending/removing from - existing geometry, then we also need to start marking the geometry as - dirty. - */ - node->geometry()->setIndexDataPattern(QSGGeometry::StaticPattern); - node->geometry()->setVertexDataPattern(QSGGeometry::StaticPattern); - - if (parentNode == 0) - parentNode = this; - parentNode->appendChildNode(node); - - return node; -} - -void QQuickTextNode::setCursor(const QRectF &rect, const QColor &color) -{ - if (m_cursorNode != 0) - delete m_cursorNode; - - m_cursorNode = new QSGSimpleRectNode(rect, color); - appendChildNode(m_cursorNode); -} - -namespace { - - struct BinaryTreeNode { - enum SelectionState { - Unselected, - Selected - }; - - BinaryTreeNode() - : selectionState(Unselected) - , clipNode(0) - , decorations(QQuickTextNode::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(QQuickTextNode::NoDecoration) - , image(i) - , ascent(a) - , leftChildIndex(-1) - , rightChildIndex(-1) - { - } - - BinaryTreeNode(const QGlyphRun &g, SelectionState selState, const QRectF &brect, - const QQuickTextNode::Decorations &decs, const QColor &c, const QColor &bc, - const QPointF &pos, qreal a) - : glyphRun(g) - , boundingRect(brect) - , selectionState(selState) - , clipNode(0) - , decorations(decs) - , color(c) - , backgroundColor(bc) - , position(pos) - , ascent(a) - , leftChildIndex(-1) - , rightChildIndex(-1) - { - } - - QGlyphRun glyphRun; - QRectF boundingRect; - SelectionState selectionState; - QSGClipNode *clipNode; - QQuickTextNode::Decorations decorations; - QColor color; - QColor backgroundColor; - QPointF position; - QImage image; - qreal ascent; - - int leftChildIndex; - int rightChildIndex; - - static void insert(QVarLengthArray<BinaryTreeNode> *binaryTree, - const QRectF &rect, - const QImage &image, - qreal ascent, - SelectionState selectionState) - { - insert(binaryTree, BinaryTreeNode(rect, image, selectionState, ascent)); - } - - static void insert(QVarLengthArray<BinaryTreeNode> *binaryTree, - const QGlyphRun &glyphRun, - SelectionState selectionState, - const QColor &textColor, - const QColor &backgroundColor, - const QPointF &position) - { - QRectF searchRect = glyphRun.boundingRect(); - searchRect.translate(position); - - if (qFuzzyIsNull(searchRect.width()) || qFuzzyIsNull(searchRect.height())) - return; - - QQuickTextNode::Decorations decorations = QQuickTextNode::NoDecoration; - decorations |= (glyphRun.underline() ? QQuickTextNode::Underline : QQuickTextNode::NoDecoration); - decorations |= (glyphRun.overline() ? QQuickTextNode::Overline : QQuickTextNode::NoDecoration); - decorations |= (glyphRun.strikeOut() ? QQuickTextNode::StrikeOut : QQuickTextNode::NoDecoration); - decorations |= (backgroundColor.isValid() ? QQuickTextNode::Background : QQuickTextNode::NoDecoration); - - qreal ascent = glyphRun.rawFont().ascent(); - insert(binaryTree, BinaryTreeNode(glyphRun, selectionState, searchRect, decorations, - textColor, backgroundColor, position, ascent)); - } - - static void insert(QVarLengthArray<BinaryTreeNode> *binaryTree, - const BinaryTreeNode &binaryTreeNode) - { - int newIndex = binaryTree->size(); - binaryTree->append(binaryTreeNode); - if (newIndex == 0) - return; - - int searchIndex = 0; - forever { - BinaryTreeNode *node = binaryTree->data() + searchIndex; - if (binaryTreeNode.boundingRect.left() < node->boundingRect.left()) { - if (node->leftChildIndex < 0) { - node->leftChildIndex = newIndex; - break; - } else { - searchIndex = node->leftChildIndex; - } - } else { - if (node->rightChildIndex < 0) { - node->rightChildIndex = newIndex; - break; - } else { - searchIndex = node->rightChildIndex; - } - } - } - } - - static void inOrder(const QVarLengthArray<BinaryTreeNode> &binaryTree, - QVarLengthArray<int> *sortedIndexes, - int currentIndex = 0) - { - Q_ASSERT(currentIndex < binaryTree.size()); - - const BinaryTreeNode *node = binaryTree.data() + currentIndex; - if (node->leftChildIndex >= 0) - inOrder(binaryTree, sortedIndexes, node->leftChildIndex); - - sortedIndexes->append(currentIndex); - - if (node->rightChildIndex >= 0) - inOrder(binaryTree, sortedIndexes, node->rightChildIndex); - } - }; - - // 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 SelectionEngine - { - public: - SelectionEngine() : m_hasSelection(false) {} - - QTextLine currentLine() const { return m_currentLine; } - - void setCurrentLine(const QTextLine ¤tLine) - { - if (m_currentLine.isValid()) - processCurrentLine(); - - m_currentLine = currentLine; - } - - 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, - BinaryTreeNode::SelectionState selectionState, - QTextFrameFormat::Position layoutPosition); - void addTextObject(const QPointF &position, const QTextCharFormat &format, - BinaryTreeNode::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<QTextLayout::FormatRange> &ranges, - int start, int end, - int selectionStart, int selectionEnd); - - 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 setPosition(const QPointF &position) - { - m_position = position; - } - - private: - struct TextDecoration - { - TextDecoration() : selectionState(BinaryTreeNode::Unselected) {} - TextDecoration(const BinaryTreeNode::SelectionState &s, - const QRectF &r, - const QColor &c) - : selectionState(s) - , rect(r) - , color(c) - { - } - - BinaryTreeNode::SelectionState selectionState; - QRectF rect; - QColor color; - }; - - void processCurrentLine(); - void addTextDecorations(const QVarLengthArray<TextDecoration> &textDecorations, - qreal offset, qreal thickness); - - QColor m_selectionColor; - QColor m_textColor; - QColor m_backgroundColor; - QColor m_selectedTextColor; - QPointF m_position; - - QTextLine m_currentLine; - bool m_hasSelection; - - QList<QPair<QRectF, QColor> > m_backgrounds; - QList<QRectF> m_selectionRects; - QVarLengthArray<BinaryTreeNode> m_currentLineTree; - - QList<TextDecoration> m_lines; - QVector<BinaryTreeNode> m_processedNodes; - - QList<QPair<QRectF, QImage> > m_images; - }; - - void SelectionEngine::addTextDecorations(const QVarLengthArray<TextDecoration> &textDecorations, - qreal offset, qreal thickness) - { - for (int i=0; i<textDecorations.size(); ++i) { - TextDecoration textDecoration = textDecorations.at(i); - - { - QRectF &rect = textDecoration.rect; - rect.setY(qRound(rect.y() + m_currentLine.ascent() + offset)); - rect.setHeight(thickness); - } - - m_lines.append(textDecoration); - } - } - - void SelectionEngine::processCurrentLine() - { - // No glyphs, do nothing - if (m_currentLineTree.isEmpty()) - return; - - // 1. Go through current line and get correct decoration position for each node based on - // neighbouring decorations. Add decoration to global list - // 2. Create clip nodes for all selected text. Try to merge as many as possible within - // the line. - // 3. Add QRects to a list of selection rects. - // 4. Add all nodes to a global processed list - QVarLengthArray<int> sortedIndexes; // Indexes in tree sorted by x position - BinaryTreeNode::inOrder(m_currentLineTree, &sortedIndexes); - - Q_ASSERT(sortedIndexes.size() == m_currentLineTree.size()); - - BinaryTreeNode::SelectionState currentSelectionState = BinaryTreeNode::Unselected; - QRectF currentRect; - - QQuickTextNode::Decorations currentDecorations = QQuickTextNode::NoDecoration; - qreal underlineOffset = 0.0; - qreal underlineThickness = 0.0; - - qreal overlineOffset = 0.0; - qreal overlineThickness = 0.0; - - qreal strikeOutOffset = 0.0; - qreal strikeOutThickness = 0.0; - - QRectF decorationRect = currentRect; - - QColor lastColor; - QColor lastBackgroundColor; - - QVarLengthArray<TextDecoration> pendingUnderlines; - QVarLengthArray<TextDecoration> pendingOverlines; - QVarLengthArray<TextDecoration> pendingStrikeOuts; - if (!sortedIndexes.isEmpty()) { - QSGClipNode *currentClipNode = m_hasSelection ? new QSGClipNode : 0; - bool currentClipNodeUsed = false; - for (int i=0; i<=sortedIndexes.size(); ++i) { - BinaryTreeNode *node = 0; - if (i < sortedIndexes.size()) { - int sortedIndex = sortedIndexes.at(i); - Q_ASSERT(sortedIndex < m_currentLineTree.size()); - - node = m_currentLineTree.data() + sortedIndex; - } - - if (i == 0) - currentSelectionState = node->selectionState; - - // Update decorations - if (currentDecorations != QQuickTextNode::NoDecoration) { - decorationRect.setY(m_position.y() + m_currentLine.y()); - decorationRect.setHeight(m_currentLine.height()); - - if (node != 0) - decorationRect.setRight(node->boundingRect.left()); - - TextDecoration textDecoration(currentSelectionState, decorationRect, lastColor); - if (currentDecorations & QQuickTextNode::Underline) - pendingUnderlines.append(textDecoration); - - if (currentDecorations & QQuickTextNode::Overline) - pendingOverlines.append(textDecoration); - - if (currentDecorations & QQuickTextNode::StrikeOut) - pendingStrikeOuts.append(textDecoration); - - if (currentDecorations & QQuickTextNode::Background) - m_backgrounds.append(qMakePair(decorationRect, lastBackgroundColor)); - } - - // If we've reached an unselected node from a selected node, we add the - // selection rect to the graph, and we add decoration every time the - // selection state changes, because that means the text color changes - if (node == 0 || node->selectionState != currentSelectionState) { - if (node != 0) - currentRect.setRight(node->boundingRect.left()); - currentRect.setY(m_position.y() + m_currentLine.y()); - currentRect.setHeight(m_currentLine.height()); - - // Draw selection all the way up to the left edge of the unselected item - if (currentSelectionState == BinaryTreeNode::Selected) - m_selectionRects.append(currentRect); - - if (currentClipNode != 0) { - if (!currentClipNodeUsed) { - delete currentClipNode; - } else { - currentClipNode->setIsRectangular(true); - currentClipNode->setClipRect(currentRect); - } - } - - if (node != 0 && m_hasSelection) - currentClipNode = new QSGClipNode; - else - currentClipNode = 0; - currentClipNodeUsed = false; - - if (node != 0) { - currentSelectionState = node->selectionState; - currentRect = node->boundingRect; - - // Make sure currentRect is valid, otherwise the unite won't work - if (currentRect.isNull()) - currentRect.setSize(QSizeF(1, 1)); - } - } else { - if (currentRect.isNull()) - currentRect = node->boundingRect; - else - currentRect = currentRect.united(node->boundingRect); - } - - if (node != 0) { - node->clipNode = currentClipNode; - currentClipNodeUsed = true; - - decorationRect = node->boundingRect; - - // If previous item(s) had underline and current does not, then we add the - // pending lines to the lists and likewise for overlines and strikeouts - if (!pendingUnderlines.isEmpty() - && !(node->decorations & QQuickTextNode::Underline)) { - addTextDecorations(pendingUnderlines, underlineOffset, underlineThickness); - - pendingUnderlines.clear(); - - underlineOffset = 0.0; - underlineThickness = 0.0; - } - - // ### Add pending when overlineOffset/thickness changes to minimize number of - // nodes - if (!pendingOverlines.isEmpty()) { - addTextDecorations(pendingOverlines, overlineOffset, overlineThickness); - - pendingOverlines.clear(); - - overlineOffset = 0.0; - overlineThickness = 0.0; - } - - // ### Add pending when overlineOffset/thickness changes to minimize number of - // nodes - if (!pendingStrikeOuts.isEmpty()) { - addTextDecorations(pendingStrikeOuts, strikeOutOffset, strikeOutThickness); - - pendingStrikeOuts.clear(); - - strikeOutOffset = 0.0; - strikeOutThickness = 0.0; - } - - // Merge current values with previous. Prefer greatest thickness - QRawFont rawFont = node->glyphRun.rawFont(); - if (node->decorations & QQuickTextNode::Underline) { - if (rawFont.lineThickness() > underlineThickness) { - underlineThickness = rawFont.lineThickness(); - underlineOffset = rawFont.underlinePosition(); - } - } - - if (node->decorations & QQuickTextNode::Overline) { - overlineOffset = -rawFont.ascent(); - overlineThickness = rawFont.lineThickness(); - } - - if (node->decorations & QQuickTextNode::StrikeOut) { - strikeOutThickness = rawFont.lineThickness(); - strikeOutOffset = rawFont.ascent() / -3.0; - } - - currentDecorations = node->decorations; - lastColor = node->color; - lastBackgroundColor = node->backgroundColor; - m_processedNodes.append(*node); - } - } - - if (!pendingUnderlines.isEmpty()) - addTextDecorations(pendingUnderlines, underlineOffset, underlineThickness); - - if (!pendingOverlines.isEmpty()) - addTextDecorations(pendingOverlines, overlineOffset, overlineThickness); - - if (!pendingStrikeOuts.isEmpty()) - addTextDecorations(pendingStrikeOuts, strikeOutOffset, strikeOutThickness); - } - - m_currentLineTree.clear(); - m_currentLine = QTextLine(); - m_hasSelection = false; - } - - void SelectionEngine::addImage(const QRectF &rect, const QImage &image, qreal ascent, - BinaryTreeNode::SelectionState selectionState, - QTextFrameFormat::Position layoutPosition) - { - QRectF searchRect = rect; - if (layoutPosition == QTextFrameFormat::InFlow) { - if (m_currentLineTree.isEmpty()) { - searchRect.moveTopLeft(m_position); - } else { - const BinaryTreeNode *lastNode = m_currentLineTree.data() + m_currentLineTree.size() - 1; - if (lastNode->glyphRun.isRightToLeft()) { - QPointF lastPos = lastNode->boundingRect.topLeft(); - searchRect.moveTopRight(lastPos - QPointF(0, ascent)); - } else { - QPointF lastPos = lastNode->boundingRect.topRight(); - searchRect.moveTopLeft(lastPos - QPointF(0, ascent)); - } - } - } - - BinaryTreeNode::insert(&m_currentLineTree, searchRect, image, ascent, selectionState); - } - - void SelectionEngine::addTextObject(const QPointF &position, const QTextCharFormat &format, - BinaryTreeNode::SelectionState selectionState, - QTextDocument *textDocument, int pos, - QTextFrameFormat::Position layoutPosition) - { - QTextObjectInterface *handler = textDocument->documentLayout()->handlerForObject(format.objectType()); - if (handler != 0) { - QImage image; - QSizeF size = handler->intrinsicSize(textDocument, pos, format); - - if (format.objectType() == QTextFormat::ImageObject) { - QTextImageFormat imageFormat = format.toImageFormat(); - QTextImageHandler *imageHandler = static_cast<QTextImageHandler *>(handler); - image = imageHandler->image(textDocument, imageFormat); - } - - if (image.isNull()) { - image = QImage(size.toSize(), QImage::Format_ARGB32_Premultiplied); - image.fill(Qt::transparent); - { - QPainter painter(&image); - handler->drawObject(&painter, image.rect(), textDocument, pos, format); - } - } - - qreal ascent; - QFontMetrics m(format.font()); - switch (format.verticalAlignment()) - { - case QTextCharFormat::AlignMiddle: - ascent = size.height() / 2 - 1; - break; - case QTextCharFormat::AlignBaseline: - ascent = size.height() - m.descent() - 1; - break; - default: - ascent = size.height() - 1; - } - - addImage(QRectF(position, size), image, ascent, selectionState, layoutPosition); - } - } - - void SelectionEngine::addUnselectedGlyphs(const QGlyphRun &glyphRun) - { - BinaryTreeNode::insert(&m_currentLineTree, glyphRun, BinaryTreeNode::Unselected, - m_textColor, m_backgroundColor, m_position); - } - - void SelectionEngine::addSelectedGlyphs(const QGlyphRun &glyphRun) - { - int currentSize = m_currentLineTree.size(); - BinaryTreeNode::insert(&m_currentLineTree, glyphRun, BinaryTreeNode::Selected, - m_textColor, m_backgroundColor, m_position); - m_hasSelection = m_hasSelection || m_currentLineTree.size() > currentSize; - } - - void SelectionEngine::addGlyphsForRanges(const QVarLengthArray<QTextLayout::FormatRange> &ranges, - int start, int end, - int selectionStart, int selectionEnd) - { - int currentPosition = start; - int remainingLength = end - start; - for (int j=0; j<ranges.size(); ++j) { - const QTextLayout::FormatRange &range = ranges.at(j); - if (range.start + range.length >= currentPosition - && range.start < currentPosition + remainingLength) { - - if (range.start > currentPosition) { - addGlyphsInRange(currentPosition, range.start - currentPosition, - QColor(), QColor(), selectionStart, selectionEnd); - } - - int rangeEnd = qMin(range.start + range.length, currentPosition + remainingLength); - QColor rangeColor = range.format.hasProperty(QTextFormat::ForegroundBrush) - ? range.format.foreground().color() - : QColor(); - QColor rangeBackgroundColor = range.format.hasProperty(QTextFormat::BackgroundBrush) - ? range.format.background().color() - : QColor(); - - addGlyphsInRange(range.start, rangeEnd - range.start, - rangeColor, rangeBackgroundColor, - selectionStart, selectionEnd); - - currentPosition = range.start + range.length; - remainingLength = end - currentPosition; - - } else if (range.start > currentPosition + remainingLength || remainingLength <= 0) { - break; - } - } - - if (remainingLength > 0) { - addGlyphsInRange(currentPosition, remainingLength, QColor(), QColor(), - selectionStart, selectionEnd); - } - - } - - void SelectionEngine::addGlyphsInRange(int rangeStart, int rangeLength, - const QColor &color, const QColor &backgroundColor, - int selectionStart, int selectionEnd) - { - QColor oldColor; - if (color.isValid()) { - oldColor = m_textColor; - m_textColor = color; - } - - QColor oldBackgroundColor = m_backgroundColor; - if (backgroundColor.isValid()) { - oldBackgroundColor = m_backgroundColor; - m_backgroundColor = backgroundColor; - } - - bool hasSelection = selectionEnd >= 0 - && selectionStart <= selectionEnd; - - QTextLine &line = m_currentLine; - int rangeEnd = rangeStart + rangeLength; - if (!hasSelection || (selectionStart > rangeEnd || selectionEnd < rangeStart)) { - QList<QGlyphRun> glyphRuns = line.glyphRuns(rangeStart, rangeLength); - for (int j=0; j<glyphRuns.size(); ++j) { - const QGlyphRun &glyphRun = glyphRuns.at(j); - addUnselectedGlyphs(glyphRun); - } - } else { - if (rangeStart < selectionStart) { - QList<QGlyphRun> glyphRuns = line.glyphRuns(rangeStart, - qMin(selectionStart - rangeStart, - rangeLength)); - - for (int j=0; j<glyphRuns.size(); ++j) { - const QGlyphRun &glyphRun = glyphRuns.at(j); - addUnselectedGlyphs(glyphRun); - } - } - - if (rangeEnd > selectionStart) { - int start = qMax(selectionStart, rangeStart); - int length = qMin(selectionEnd - start + 1, rangeEnd - start); - QList<QGlyphRun> glyphRuns = line.glyphRuns(start, length); - - for (int j=0; j<glyphRuns.size(); ++j) { - const QGlyphRun &glyphRun = glyphRuns.at(j); - addSelectedGlyphs(glyphRun); - } - } - - if (selectionEnd >= rangeStart && selectionEnd < rangeEnd) { - QList<QGlyphRun> glyphRuns = line.glyphRuns(selectionEnd + 1, rangeEnd - selectionEnd - 1); - for (int j=0; j<glyphRuns.size(); ++j) { - const QGlyphRun &glyphRun = glyphRuns.at(j); - addUnselectedGlyphs(glyphRun); - } - } - } - - if (backgroundColor.isValid()) - m_backgroundColor = oldBackgroundColor; - - if (oldColor.isValid()) - m_textColor = oldColor; - } - - void SelectionEngine::addBorder(const QRectF &rect, qreal border, - QTextFrameFormat::BorderStyle borderStyle, - const QBrush &borderBrush) - { - QColor color = borderBrush.color(); - - // Currently we don't support other styles than solid - Q_UNUSED(borderStyle); - - m_backgrounds.append(qMakePair(QRectF(rect.left(), rect.top(), border, rect.height() + border), color)); - m_backgrounds.append(qMakePair(QRectF(rect.left() + border, rect.top(), rect.width(), border), color)); - m_backgrounds.append(qMakePair(QRectF(rect.right(), rect.top() + border, border, rect.height() - border), color)); - m_backgrounds.append(qMakePair(QRectF(rect.left() + border, rect.bottom(), rect.width(), border), color)); - } - - void SelectionEngine::addFrameDecorations(QTextDocument *document, QTextFrame *frame) - { - QTextDocumentLayout *documentLayout = qobject_cast<QTextDocumentLayout *>(document->documentLayout()); - QTextFrameFormat frameFormat = frame->format().toFrameFormat(); - - QTextTable *table = qobject_cast<QTextTable *>(frame); - QRectF boundingRect = table == 0 - ? documentLayout->frameBoundingRect(frame) - : documentLayout->tableBoundingRect(table); - - QBrush bg = frame->frameFormat().background(); - if (bg.style() != Qt::NoBrush) - m_backgrounds.append(qMakePair(boundingRect, bg.color())); - - if (!frameFormat.hasProperty(QTextFormat::FrameBorder)) - return; - - qreal borderWidth = frameFormat.border(); - if (qFuzzyIsNull(borderWidth)) - return; - - QBrush borderBrush = frameFormat.borderBrush(); - QTextFrameFormat::BorderStyle borderStyle = frameFormat.borderStyle(); - if (borderStyle == QTextFrameFormat::BorderStyle_None) - return; - - addBorder(boundingRect.adjusted(frameFormat.leftMargin(), frameFormat.topMargin(), - -frameFormat.rightMargin(), -frameFormat.bottomMargin()), - borderWidth, borderStyle, borderBrush); - if (table != 0) { - int rows = table->rows(); - int columns = table->columns(); - - for (int row=0; row<rows; ++row) { - for (int column=0; column<columns; ++column) { - QTextTableCell cell = table->cellAt(row, column); - - QRectF cellRect = documentLayout->tableCellBoundingRect(table, cell); - addBorder(cellRect.adjusted(-borderWidth, -borderWidth, 0, 0), borderWidth, - borderStyle, borderBrush); - } - } - } - } - - void SelectionEngine::addToSceneGraph(QQuickTextNode *parentNode, - QQuickText::TextStyle style, - const QColor &styleColor) - { - if (m_currentLine.isValid()) - processCurrentLine(); - - - for (int i=0; i<m_backgrounds.size(); ++i) { - const QRectF &rect = m_backgrounds.at(i).first; - const QColor &color = m_backgrounds.at(i).second; - - parentNode->appendChildNode(new QSGSimpleRectNode(rect, color)); - } - - // First, prepend all selection rectangles to the tree - for (int i=0; i<m_selectionRects.size(); ++i) { - const QRectF &rect = m_selectionRects.at(i); - - parentNode->appendChildNode(new QSGSimpleRectNode(rect, m_selectionColor)); - } - - // Finally, add decorations for each node to the tree. - for (int i=0; i<m_lines.size(); ++i) { - const TextDecoration &textDecoration = m_lines.at(i); - - QColor color = textDecoration.selectionState == BinaryTreeNode::Selected - ? m_selectedTextColor - : textDecoration.color; - - parentNode->appendChildNode(new QSGSimpleRectNode(textDecoration.rect, color)); - } - - // Then, go through all the nodes for all lines and combine all QGlyphRuns with a common - // font, selection state and clip node. - typedef QPair<QFontEngine *, QPair<QSGClipNode *, QPair<QRgb, int> > > KeyType; - QHash<KeyType, BinaryTreeNode *> map; - for (int i=0; i<m_processedNodes.size(); ++i) { - BinaryTreeNode *node = m_processedNodes.data() + i; - - if (node->image.isNull()) { - QGlyphRun glyphRun = node->glyphRun; - QRawFont rawFont = glyphRun.rawFont(); - QRawFontPrivate *rawFontD = QRawFontPrivate::get(rawFont); - - QFontEngine *fontEngine = rawFontD->fontEngine; - - KeyType key(qMakePair(fontEngine, - qMakePair(node->clipNode, - qMakePair(node->color.rgba(), int(node->selectionState))))); - - BinaryTreeNode *otherNode = map.value(key, 0); - if (otherNode != 0) { - QGlyphRun &otherGlyphRun = otherNode->glyphRun; - - QVector<quint32> otherGlyphIndexes = otherGlyphRun.glyphIndexes(); - QVector<QPointF> otherGlyphPositions = otherGlyphRun.positions(); - - otherGlyphIndexes += glyphRun.glyphIndexes(); - - QVector<QPointF> glyphPositions = glyphRun.positions(); - for (int j=0; j<glyphPositions.size(); ++j) { - otherGlyphPositions += glyphPositions.at(j) + (node->position - otherNode->position); - } - - otherGlyphRun.setGlyphIndexes(otherGlyphIndexes); - otherGlyphRun.setPositions(otherGlyphPositions); - - } else { - map.insert(key, node); - } - } else { - parentNode->addImage(node->boundingRect, node->image); - if (node->selectionState == BinaryTreeNode::Selected) { - QColor color = m_selectionColor; - color.setAlpha(128); - parentNode->appendChildNode(new QSGSimpleRectNode(node->boundingRect, color)); - } - } - } - - // ...and add clip nodes and glyphs to tree. - QHash<KeyType, BinaryTreeNode *>::const_iterator it = map.constBegin(); - while (it != map.constEnd()) { - - BinaryTreeNode *node = it.value(); - - QSGClipNode *clipNode = node->clipNode; - if (clipNode != 0 && clipNode->parent() == 0 ) - parentNode->appendChildNode(clipNode); - - QColor color = node->selectionState == BinaryTreeNode::Selected - ? m_selectedTextColor - : node->color; - - parentNode->addGlyphs(node->position, node->glyphRun, color, style, styleColor, clipNode); - - ++it; - } - } -} - -void QQuickTextNode::mergeFormats(QTextLayout *textLayout, - QVarLengthArray<QTextLayout::FormatRange> *mergedFormats) -{ - Q_ASSERT(mergedFormats != 0); - if (textLayout == 0) - return; - - QList<QTextLayout::FormatRange> additionalFormats = textLayout->additionalFormats(); - for (int i=0; i<additionalFormats.size(); ++i) { - QTextLayout::FormatRange additionalFormat = additionalFormats.at(i); - if (additionalFormat.format.hasProperty(QTextFormat::ForegroundBrush) - || additionalFormat.format.hasProperty(QTextFormat::BackgroundBrush)) { - // Merge overlapping formats - if (!mergedFormats->isEmpty()) { - QTextLayout::FormatRange *lastFormat = mergedFormats->data() + mergedFormats->size() - 1; - - if (additionalFormat.start < lastFormat->start + lastFormat->length) { - QTextLayout::FormatRange *mergedRange = 0; - - int length = additionalFormat.length; - if (additionalFormat.start > lastFormat->start) { - lastFormat->length = additionalFormat.start - lastFormat->start; - length -= lastFormat->length; - - mergedFormats->append(QTextLayout::FormatRange()); - mergedRange = mergedFormats->data() + mergedFormats->size() - 1; - lastFormat = mergedFormats->data() + mergedFormats->size() - 2; - } else { - mergedRange = lastFormat; - } - - mergedRange->format = lastFormat->format; - mergedRange->format.merge(additionalFormat.format); - mergedRange->start = additionalFormat.start; - - int end = qMin(additionalFormat.start + additionalFormat.length, - lastFormat->start + lastFormat->length); - - mergedRange->length = end - mergedRange->start; - length -= mergedRange->length; - - additionalFormat.start = end; - additionalFormat.length = length; - } - } - - if (additionalFormat.length > 0) - mergedFormats->append(additionalFormat); - } - } - -} - -namespace { - - class ProtectedLayoutAccessor: public QAbstractTextDocumentLayout - { - public: - inline QTextCharFormat formatAccessor(int pos) - { - return format(pos); - } - }; - -} - -void QQuickTextNode::addImage(const QRectF &rect, const QImage &image) -{ - QSGImageNode *node = m_context->createImageNode(); - QSGTexture *texture = m_context->createTexture(image); - m_textures.append(texture); - node->setTargetRect(rect); - node->setTexture(texture); - appendChildNode(node); - node->update(); -} - -void QQuickTextNode::addTextDocument(const QPointF &, QTextDocument *textDocument, - const QColor &textColor, - QQuickText::TextStyle style, const QColor &styleColor, - const QColor &selectionColor, const QColor &selectedTextColor, - int selectionStart, int selectionEnd) -{ - SelectionEngine engine; - engine.setTextColor(textColor); - engine.setSelectedTextColor(selectedTextColor); - engine.setSelectionColor(selectionColor); - - QList<QTextFrame *> frames; - frames.append(textDocument->rootFrame()); - while (!frames.isEmpty()) { - QTextFrame *textFrame = frames.takeFirst(); - frames.append(textFrame->childFrames()); - - engine.addFrameDecorations(textDocument, textFrame); - - if (textFrame->firstPosition() > textFrame->lastPosition() - && textFrame->frameFormat().position() != QTextFrameFormat::InFlow) { - const int pos = textFrame->firstPosition() - 1; - ProtectedLayoutAccessor *a = static_cast<ProtectedLayoutAccessor *>(textDocument->documentLayout()); - QTextCharFormat format = a->formatAccessor(pos); - QRectF rect = a->frameBoundingRect(textFrame); - - QTextBlock block = textFrame->firstCursorPosition().block(); - engine.setCurrentLine(block.layout()->lineForTextPosition(pos - block.position())); - engine.addTextObject(rect.topLeft(), format, BinaryTreeNode::Unselected, textDocument, - pos, textFrame->frameFormat().position()); - } else { - QTextFrame::iterator it = textFrame->begin(); - - while (!it.atEnd()) { - Q_ASSERT(!engine.currentLine().isValid()); - - QTextBlock block = it.currentBlock(); - int preeditLength = block.isValid() ? block.layout()->preeditAreaText().length() : 0; - int preeditPosition = block.isValid() ? block.layout()->preeditAreaPosition() : -1; - - QVarLengthArray<QTextLayout::FormatRange> colorChanges; - mergeFormats(block.layout(), &colorChanges); - - QPointF blockPosition = textDocument->documentLayout()->blockBoundingRect(block).topLeft(); - if (QTextList *textList = block.textList()) { - QPointF pos = blockPosition; - QTextLayout *layout = block.layout(); - if (layout->lineCount() > 0) { - QTextLine firstLine = layout->lineAt(0); - Q_ASSERT(firstLine.isValid()); - - engine.setCurrentLine(firstLine); - - QRectF textRect = firstLine.naturalTextRect(); - pos += textRect.topLeft(); - if (block.textDirection() == Qt::RightToLeft) - pos.rx() += textRect.width(); - - const QTextCharFormat charFormat = block.charFormat(); - QFont font(charFormat.font()); - QFontMetricsF fontMetrics(font); - QTextListFormat listFormat = textList->format(); - - QString listItemBullet; - switch (listFormat.style()) { - case QTextListFormat::ListCircle: - listItemBullet = QChar(0x25E6); // White bullet - break; - case QTextListFormat::ListSquare: - listItemBullet = QChar(0x25AA); // Black small square - break; - case QTextListFormat::ListDecimal: - case QTextListFormat::ListLowerAlpha: - case QTextListFormat::ListUpperAlpha: - case QTextListFormat::ListLowerRoman: - case QTextListFormat::ListUpperRoman: - listItemBullet = textList->itemText(block); - break; - default: - listItemBullet = QChar(0x2022); // Black bullet - break; - }; - - QSizeF size(fontMetrics.width(listItemBullet), fontMetrics.height()); - qreal xoff = fontMetrics.width(QLatin1Char(' ')); - if (block.textDirection() == Qt::LeftToRight) - xoff = -xoff - size.width(); - engine.setPosition(pos + QPointF(xoff, 0)); - - QTextLayout layout; - layout.setFont(font); - layout.setText(listItemBullet); // Bullet - layout.beginLayout(); - QTextLine line = layout.createLine(); - line.setPosition(QPointF(0, 0)); - layout.endLayout(); - - QList<QGlyphRun> glyphRuns = layout.glyphRuns(); - for (int i=0; i<glyphRuns.size(); ++i) - engine.addUnselectedGlyphs(glyphRuns.at(i)); - } - } - - int textPos = block.position(); - QTextBlock::iterator blockIterator = block.begin(); - while (!blockIterator.atEnd()) { - QTextFragment fragment = blockIterator.fragment(); - QString text = fragment.text(); - if (text.isEmpty()) - continue; - - QTextCharFormat charFormat = fragment.charFormat(); - engine.setPosition(blockPosition); - if (text.contains(QChar::ObjectReplacementCharacter)) { - QTextFrame *frame = qobject_cast<QTextFrame *>(textDocument->objectForFormat(charFormat)); - if (frame && frame->frameFormat().position() == QTextFrameFormat::InFlow) { - BinaryTreeNode::SelectionState selectionState = - (selectionStart < textPos + text.length() - && selectionEnd >= textPos) - ? BinaryTreeNode::Selected - : BinaryTreeNode::Unselected; - - engine.addTextObject(QPointF(), charFormat, selectionState, textDocument, textPos); - } - textPos += text.length(); - } else { - if (charFormat.foreground().style() != Qt::NoBrush) - engine.setTextColor(charFormat.foreground().color()); - else - engine.setTextColor(textColor); - - int fragmentEnd = textPos + fragment.length(); - if (preeditPosition >= 0 - && preeditPosition >= textPos - && preeditPosition < fragmentEnd) { - fragmentEnd += preeditLength; - } - - while (textPos < fragmentEnd) { - int blockRelativePosition = textPos - block.position(); - QTextLine line = block.layout()->lineForTextPosition(blockRelativePosition); - if (!engine.currentLine().isValid() - || line.lineNumber() != engine.currentLine().lineNumber()) { - engine.setCurrentLine(line); - } - - Q_ASSERT(line.textLength() > 0); - int lineEnd = line.textStart() + block.position() + line.textLength(); - - int len = qMin(lineEnd - textPos, fragmentEnd - textPos); - Q_ASSERT(len > 0); - - int currentStepEnd = textPos + len; - - engine.addGlyphsForRanges(colorChanges, - textPos - block.position(), - currentStepEnd - block.position(), - selectionStart - block.position(), - selectionEnd - block.position()); - - textPos = currentStepEnd; - } - } - - ++blockIterator; - } - - engine.setCurrentLine(QTextLine()); // Reset current line because the text layout changed - ++it; - } - } - } - - engine.addToSceneGraph(this, style, styleColor); -} - -void QQuickTextNode::addTextLayout(const QPointF &position, QTextLayout *textLayout, const QColor &color, - QQuickText::TextStyle style, const QColor &styleColor, - const QColor &selectionColor, const QColor &selectedTextColor, - int selectionStart, int selectionEnd) -{ - SelectionEngine engine; - engine.setTextColor(color); - engine.setSelectedTextColor(selectedTextColor); - engine.setSelectionColor(selectionColor); - engine.setPosition(position); - - int preeditLength = textLayout->preeditAreaText().length(); - int preeditPosition = textLayout->preeditAreaPosition(); - - QVarLengthArray<QTextLayout::FormatRange> colorChanges; - mergeFormats(textLayout, &colorChanges); - - for (int i=0; i<textLayout->lineCount(); ++i) { - QTextLine line = textLayout->lineAt(i); - - int start = line.textStart(); - int length = line.textLength(); - int end = start + length; - - if (preeditPosition >= 0 - && preeditPosition >= start - && preeditPosition < end) { - end += preeditLength; - } - - engine.setCurrentLine(line); - engine.addGlyphsForRanges(colorChanges, start, end, selectionStart, selectionEnd); - } - - engine.addToSceneGraph(this, style, styleColor); -} - -void QQuickTextNode::deleteContent() -{ - while (firstChild() != 0) - delete firstChild(); - m_cursorNode = 0; -} - -#if 0 -void QQuickTextNode::updateNodes() -{ - return; - deleteContent(); - if (m_text.isEmpty()) - return; - - if (m_usePixmapCache) { - // ### gunnar: port properly -// QPixmap pixmap = generatedPixmap(); -// if (pixmap.isNull()) -// return; - -// QSGImageNode *pixmapNode = m_context->createImageNode(); -// pixmapNode->setRect(pixmap.rect()); -// pixmapNode->setSourceRect(pixmap.rect()); -// pixmapNode->setOpacity(m_opacity); -// pixmapNode->setClampToEdge(true); -// pixmapNode->setLinearFiltering(m_linearFiltering); - -// appendChildNode(pixmapNode); - } else { - if (m_text.isEmpty()) - return; - - // Implement styling by drawing text several times at slight shifts. shiftForStyle - // contains the sequence of shifted positions at which to draw the text. All except - // the last will be drawn with styleColor. - QList<QPointF> shiftForStyle; - switch (m_textStyle) { - case OutlineTextStyle: - // ### Should be made faster by implementing outline material - shiftForStyle << QPointF(-1, 0); - shiftForStyle << QPointF(0, -1); - shiftForStyle << QPointF(1, 0); - shiftForStyle << QPointF(0, 1); - break; - case SunkenTextStyle: - shiftForStyle << QPointF(0, -1); - break; - case RaisedTextStyle: - shiftForStyle << QPointF(0, 1); - break; - default: - break; - } - - shiftForStyle << QPointF(0, 0); // Regular position - while (!shiftForStyle.isEmpty()) { - QPointF shift = shiftForStyle.takeFirst(); - - // Use styleColor for all but last shift - if (m_richText) { - QColor overrideColor = shiftForStyle.isEmpty() ? QColor() : m_styleColor; - - QTextFrame *textFrame = m_textDocument->rootFrame(); - QPointF p = m_textDocument->documentLayout()->frameBoundingRect(textFrame).topLeft(); - - QTextFrame::iterator it = textFrame->begin(); - while (!it.atEnd()) { - addTextBlock(shift + p, it.currentBlock(), overrideColor); - ++it; - } - } else { - addTextLayout(shift, m_textLayout, shiftForStyle.isEmpty() - ? m_color - : m_styleColor); - } - } - } -} -#endif - -QT_END_NAMESPACE |