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| ** |
| ** Copyright (C) 2018 The Qt Company Ltd. |
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| ** This file is part of the lottie-qt module of the Qt Toolkit. |
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| ****************************************************************************/ |
| |
| #ifndef TRIMPATH_P_H |
| #define TRIMPATH_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 <QPainterPath> |
| |
| QT_BEGIN_NAMESPACE |
| |
| class TrimPath { |
| public: |
| TrimPath() = default; |
| TrimPath(const QPainterPath &path) |
| : mPath(path) {} |
| TrimPath(const TrimPath &other) |
| : mPath(other.mPath), mLens(other.mLens) {} |
| ~TrimPath() {} |
| |
| void setPath(const QPainterPath &path) { |
| mPath = path; |
| mLens.clear(); |
| } |
| |
| QPainterPath path() const { |
| return mPath; |
| } |
| |
| QPainterPath trimmed(qreal f1, qreal f2, qreal offset = 0.0) const; |
| |
| private: |
| bool lensIsDirty() const { |
| return mLens.size() != mPath.elementCount(); |
| } |
| void updateLens() const; |
| int elementAtLength(qreal len) const; |
| QPointF endPointOfElement(int elemIdx) const; |
| void appendTrimmedElement(QPainterPath *to, int elemIdx, bool trimStart, qreal startLen, bool trimEnd, qreal endLen) const; |
| void appendStartOfElement(QPainterPath *to, int elemIdx, qreal len) const { |
| appendTrimmedElement(to, elemIdx, false, 0.0, true, len); |
| } |
| void appendEndOfElement(QPainterPath *to, int elemIdx, qreal len) const { |
| appendTrimmedElement(to, elemIdx, true, len, false, 1.0); |
| } |
| |
| void appendElementRange(QPainterPath *to, int first, int last) const; |
| |
| QPainterPath mPath; |
| mutable QVector<qreal> mLens; |
| }; |
| |
| QT_END_NAMESPACE |
| |
| Q_DECLARE_METATYPE(TrimPath); |
| |
| #endif // TRIMPATH_P_H |