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| |
| #ifndef QCOSMETICSTROKER_P_H |
| #define QCOSMETICSTROKER_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 <private/qdrawhelper_p.h> |
| #include <private/qvectorpath_p.h> |
| #include <private/qpaintengine_raster_p.h> |
| #include <qpen.h> |
| |
| QT_BEGIN_NAMESPACE |
| |
| |
| class QCosmeticStroker; |
| |
| |
| typedef bool (*StrokeLine)(QCosmeticStroker *stroker, qreal x1, qreal y1, qreal x2, qreal y2, int caps); |
| |
| class QCosmeticStroker |
| { |
| public: |
| struct Point { |
| int x; |
| int y; |
| }; |
| struct PointF { |
| qreal x; |
| qreal y; |
| }; |
| |
| enum Caps { |
| NoCaps = 0, |
| CapBegin = 0x1, |
| CapEnd = 0x2 |
| }; |
| |
| // used to avoid drop outs or duplicated points |
| enum Direction { |
| TopToBottom = 0x1, |
| BottomToTop = 0x2, |
| LeftToRight = 0x4, |
| RightToLeft = 0x8, |
| VerticalMask = 0x3, |
| HorizontalMask = 0xc |
| }; |
| |
| QCosmeticStroker(QRasterPaintEngineState *s, const QRect &dr, const QRect &dr_unclipped) |
| : state(s), |
| deviceRect(dr_unclipped), |
| clip(dr), |
| pattern(0), |
| reversePattern(0), |
| patternSize(0), |
| patternLength(0), |
| patternOffset(0), |
| legacyRounding(false), |
| current_span(0), |
| lastDir(LeftToRight), |
| lastAxisAligned(false) |
| { setup(); } |
| |
| ~QCosmeticStroker() { free(pattern); free(reversePattern); } |
| |
| void setLegacyRoundingEnabled(bool legacyRoundingEnabled) { legacyRounding = legacyRoundingEnabled; } |
| |
| void drawLine(const QPointF &p1, const QPointF &p2); |
| void drawPath(const QVectorPath &path); |
| void drawPoints(const QPoint *points, int num); |
| void drawPoints(const QPointF *points, int num); |
| |
| |
| QRasterPaintEngineState *state; |
| QRect deviceRect; |
| QRect clip; |
| // clip bounds in real |
| qreal xmin, xmax; |
| qreal ymin, ymax; |
| |
| StrokeLine stroke; |
| bool drawCaps; |
| |
| int *pattern; |
| int *reversePattern; |
| int patternSize; |
| int patternLength; |
| int patternOffset; |
| |
| bool legacyRounding; |
| |
| enum { NSPANS = 255 }; |
| QT_FT_Span spans[NSPANS]; |
| int current_span; |
| ProcessSpans blend; |
| |
| int opacity; |
| |
| uint color; |
| uint *pixels; |
| int ppl; |
| |
| Direction lastDir; |
| Point lastPixel; |
| bool lastAxisAligned; |
| |
| private: |
| void setup(); |
| |
| void renderCubic(const QPointF &p1, const QPointF &p2, const QPointF &p3, const QPointF &p4, int caps); |
| void renderCubicSubdivision(PointF *points, int level, int caps); |
| // used for closed subpaths |
| void calculateLastPoint(qreal rx1, qreal ry1, qreal rx2, qreal ry2); |
| |
| public: |
| bool clipLine(qreal &x1, qreal &y1, qreal &x2, qreal &y2); |
| }; |
| |
| QT_END_NAMESPACE |
| |
| #endif // QCOSMETICLINE_H |