diff options
Diffstat (limited to 'tests/manual/painterpathquickshape/svgpathloader.cpp')
| -rw-r--r-- | tests/manual/painterpathquickshape/svgpathloader.cpp | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/tests/manual/painterpathquickshape/svgpathloader.cpp b/tests/manual/painterpathquickshape/svgpathloader.cpp new file mode 100644 index 0000000000..2a9a395c97 --- /dev/null +++ b/tests/manual/painterpathquickshape/svgpathloader.cpp @@ -0,0 +1,152 @@ +// Copyright (C) 2023 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only + +#include "svgpathloader.h" + +#include <QFile> +#include <QPainterPath> +#include <QXmlStreamReader> +#include <QXmlStreamAttributes> +#include <QStack> +#include <QLocale> +#include <QMatrix4x4> + +SvgPathLoader::SvgPathLoader() +{ + connect(this, &SvgPathLoader::sourceChanged, this, &SvgPathLoader::loadPaths); + + loadPaths(); +} + +struct SvgState +{ + QString fillColor = {}; + QString strokeColor = {}; + QString strokeWidth = {}; + QMatrix4x4 transform; +}; + +void SvgPathLoader::loadPaths() +{ + m_paths.clear(); + m_fillColors.clear(); + m_strokeColors.clear(); + m_strokeWidths.clear(); + m_transforms.clear(); + if (m_source.isEmpty()) + return; + + QStack<SvgState> states; + states.push({}); + + QString fileName; + if (m_source.isLocalFile()) + fileName = m_source.toLocalFile(); + else if (m_source.scheme() == QStringLiteral("qrc")) + fileName = QStringLiteral(":/") + m_source.fileName(); + + QFile f(fileName); + if (f.open(QIODevice::ReadOnly)) { + QXmlStreamReader reader(&f); + SvgState currentState = {}; + while (!reader.atEnd()) { + reader.readNext(); + QXmlStreamAttributes attrs = reader.attributes(); + if (reader.isStartElement()) + states.push(currentState); + + if (attrs.hasAttribute(QStringLiteral("transform"))) { + QString t = attrs.value(QStringLiteral("transform")).toString(); + const bool isTranslate = t.startsWith(QStringLiteral("translate")); + const bool isScale = t.startsWith(QStringLiteral("scale")); + const bool isMatrix = t.startsWith(QStringLiteral("matrix")); + if (isTranslate || isScale || isMatrix) { + int pStart = t.indexOf(QLatin1Char('(')); + int pEnd = t.indexOf(QLatin1Char(')')); + if (pStart >= 0 && pEnd > pStart + 1) { + t = t.mid(pStart + 1, pEnd - pStart - 1); + QStringList coords = t.split(QLatin1Char(',')); + if (isMatrix && coords.size() == 6) { + QMatrix3x3 m; + m(0, 0) = coords.at(0).toDouble(); + m(1, 0) = coords.at(1).toDouble(); + m(2, 0) = 0.0f; + + m(0, 1) = coords.at(2).toDouble(); + m(1, 1) = coords.at(3).toDouble(); + m(2, 1) = 0.0f; + + m(0, 2) = coords.at(4).toDouble(); + m(1, 2) = coords.at(5).toDouble(); + m(2, 2) = 1.0f; + + currentState.transform *= QMatrix4x4(m); + } else if (coords.size() == 2) { + qreal c1 = coords.first().toDouble(); + qreal c2 = coords.last().toDouble(); + + if (isTranslate) + currentState.transform.translate(c1, c2); + else if (isScale) + currentState.transform.scale(c1, c2); + } + } + } + } + + if (attrs.hasAttribute(QStringLiteral("fill"))) { + currentState.fillColor = attrs.value(QStringLiteral("fill")).toString(); + if (!currentState.fillColor.startsWith("#")) + currentState.fillColor = ""; + } else if (attrs.hasAttribute(QStringLiteral("style"))) { + QString s = attrs.value(QStringLiteral("style")).toString(); + int idx = s.indexOf(QStringLiteral("fill:")); + if (idx >= 0) { + idx = s.indexOf(QLatin1Char('#'), idx); + if (idx >= 0) + currentState.fillColor = s.mid(idx, 7); + } + } + if (currentState.fillColor == QStringLiteral("none")) + currentState.fillColor = {}; + if (attrs.hasAttribute(QStringLiteral("stroke"))) { + currentState.strokeColor = attrs.value(QStringLiteral("stroke")).toString(); + if (currentState.strokeColor == QStringLiteral("none")) + currentState.strokeColor = {}; + } + if (attrs.hasAttribute(QStringLiteral("stroke-width"))) + currentState.strokeWidth = attrs.value(QStringLiteral("stroke-width")).toString(); + if (reader.isStartElement() && reader.name() == QStringLiteral("path")) { + m_fillColors.append(currentState.fillColor); + m_strokeColors.append(currentState.strokeColor); + m_strokeWidths.append(currentState.strokeWidth); + + QString t; + for (int i = 0; i < 4; ++i) { + if (i > 0) + t += QLatin1Char(','); + QVector4D row = currentState.transform.row(i); + + QLocale c(QLocale::C); + t += QStringLiteral("%1, %2, %3, %4") + .arg(c.toString(row.x())) + .arg(c.toString(row.y())) + .arg(c.toString(row.z())) + .arg(c.toString(row.w())); + } + + m_transforms.append(t); + if (attrs.hasAttribute(QStringLiteral("d"))) { + m_paths.append(attrs.value(QStringLiteral("d")).toString()); + } + } + if (reader.isEndElement()) { + currentState = states.pop(); + } + } + } else { + qWarning() << "Can't open file" << fileName; + } + + emit pathsChanged(); +} |