94 lines
2.9 KiB
C++
94 lines
2.9 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2018 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of the lottie-qt module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:GPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3 or (at your option) any later version
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** approved by the KDE Free Qt Foundation. The licenses are as published by
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** the Free Software Foundation and appearing in the file LICENSE.GPL3
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** included in the packaging of this file. Please review the following
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** information to ensure the GNU General Public License requirements will
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** be met: https://www.gnu.org/licenses/gpl-3.0.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef TRIMPATH_P_H
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#define TRIMPATH_P_H
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//
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// W A R N I N G
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// -------------
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//
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// This file is not part of the Qt API. It exists purely as an
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// implementation detail. This header file may change from version to
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// version without notice, or even be removed.
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//
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// We mean it.
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//
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#include <QPainterPath>
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QT_BEGIN_NAMESPACE
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class TrimPath {
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public:
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TrimPath() = default;
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TrimPath(const QPainterPath &path)
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: mPath(path) {}
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TrimPath(const TrimPath &other)
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: mPath(other.mPath), mLens(other.mLens) {}
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~TrimPath() {}
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void setPath(const QPainterPath &path) {
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mPath = path;
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mLens.clear();
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}
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QPainterPath path() const {
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return mPath;
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}
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QPainterPath trimmed(qreal f1, qreal f2, qreal offset = 0.0) const;
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private:
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bool lensIsDirty() const {
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return mLens.size() != mPath.elementCount();
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}
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void updateLens() const;
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int elementAtLength(qreal len) const;
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QPointF endPointOfElement(int elemIdx) const;
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void appendTrimmedElement(QPainterPath *to, int elemIdx, bool trimStart, qreal startLen, bool trimEnd, qreal endLen) const;
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void appendStartOfElement(QPainterPath *to, int elemIdx, qreal len) const {
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appendTrimmedElement(to, elemIdx, false, 0.0, true, len);
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}
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void appendEndOfElement(QPainterPath *to, int elemIdx, qreal len) const {
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appendTrimmedElement(to, elemIdx, true, len, false, 1.0);
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}
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void appendElementRange(QPainterPath *to, int first, int last) const;
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QPainterPath mPath;
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mutable QVector<qreal> mLens;
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};
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QT_END_NAMESPACE
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Q_DECLARE_METATYPE(TrimPath);
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#endif // TRIMPATH_P_H
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