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#ifndef QCOSMETICSTROKER_P_H
#define QCOSMETICSTROKER_P_H
#include <private/qdrawhelper_p.h>
#include <private/qvectorpath_p.h>
#include <private/qpaintengine_raster_p.h>
#include <qpen.h>
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
QT_MODULE(Gui)
class QCosmeticStroker;
typedef void (*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,
BottomToTop,
LeftToRight,
RightToLeft
};
QCosmeticStroker(QRasterPaintEngineState *s, const QRect &dr)
: state(s),
clip(dr),
pattern(0),
reversePattern(0),
patternSize(0),
patternLength(0),
patternOffset(0),
current_span(0),
lastDir(LeftToRight),
lastAxisAligned(false)
{ setup(); }
~QCosmeticStroker() { free(pattern); free(reversePattern); }
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 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;
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
QT_END_HEADER
#endif // QCOSMETICLINE_H
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