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42 #ifndef QPAINTENGINE_ALPHA_P_H
43 #define QPAINTENGINE_ALPHA_P_H
49 // This file is not part of the Qt API. It exists for the convenience
50 // of other Qt classes. This header file may change from version to
51 // version without notice, or even be removed.
57 #include "private/qpaintengine_p.h"
61 class QAlphaPaintEnginePrivate;
63 class QAlphaPaintEngine : public QPaintEngine
65 Q_DECLARE_PRIVATE(QAlphaPaintEngine)
69 virtual bool begin(QPaintDevice *pdev);
72 virtual void updateState(const QPaintEngineState &state);
74 virtual void drawPath(const QPainterPath &path);
76 virtual void drawPolygon(const QPointF *points, int pointCount, PolygonDrawMode mode);
78 virtual void drawPixmap(const QRectF &r, const QPixmap &pm, const QRectF &sr);
79 virtual void drawImage(const QRectF &r, const QImage &image, const QRectF &sr);
80 virtual void drawTextItem(const QPointF &p, const QTextItem &textItem);
81 virtual void drawTiledPixmap(const QRectF &r, const QPixmap &pixmap, const QPointF &s);
84 QAlphaPaintEngine(QAlphaPaintEnginePrivate &data, PaintEngineFeatures devcaps = 0);
85 QRegion alphaClipping() const;
86 bool continueCall() const;
87 void flushAndInit(bool init = true);
91 class QAlphaPaintEnginePrivate : public QPaintEnginePrivate
93 Q_DECLARE_PUBLIC(QAlphaPaintEngine)
95 QAlphaPaintEnginePrivate();
96 ~QAlphaPaintEnginePrivate();
100 QPaintEngine *m_picengine;
101 QPainter *m_picpainter;
103 QPaintEngine::PaintEngineFeatures m_savedcaps;
104 QPaintDevice *m_pdev;
114 bool m_advancedBrush;
115 bool m_complexTransform;
116 bool m_emulateProjectiveTransforms;
119 QTransform m_transform;
122 void addAlphaRect(const QRectF &rect);
123 QRectF addPenWidth(const QPainterPath &path);
124 void drawAlphaImage(const QRectF &rect);
125 QRect toRect(const QRectF &rect) const;
126 bool fullyContained(const QRectF &rect) const;
128 void resetState(QPainter *p);
133 #endif // QT_NO_PRINTER
135 #endif // QPAINTENGINE_ALPHA_P_H