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39
40#ifndef QPAINTENGINEEX_P_H
41#define QPAINTENGINEEX_P_H
42
43//
44// W A R N I N G
45// -------------
46//
47// This file is not part of the Qt API. It exists purely as an
48// implementation detail. This header file may change from version to
49// version without notice, or even be removed.
50//
51// We mean it.
52//
53
54#include <QtGui/private/qtguiglobal_p.h>
55#include <QtGui/qpaintengine.h>
56
57#include <private/qpaintengine_p.h>
58#include <private/qstroker_p.h>
59#include <private/qpainter_p.h>
60#include <private/qvectorpath_p.h>
61
62
63QT_BEGIN_NAMESPACE
64
65
66class QPainterState;
67class QPaintEngineExPrivate;
68class QStaticTextItem;
69struct StrokeHandler;
70
71#ifndef QT_NO_DEBUG_STREAM
72QDebug Q_GUI_EXPORT &operator<<(QDebug &, const QVectorPath &path);
73#endif
74
75class Q_GUI_EXPORT QPaintEngineEx : public QPaintEngine
76{
77 Q_DECLARE_PRIVATE(QPaintEngineEx)
78public:
79 QPaintEngineEx();
80
81 virtual QPainterState *createState(QPainterState *orig) const;
82
83 virtual void draw(const QVectorPath &path);
84 virtual void fill(const QVectorPath &path, const QBrush &brush) = 0;
85 virtual void stroke(const QVectorPath &path, const QPen &pen);
86
87 virtual void clip(const QVectorPath &path, Qt::ClipOperation op) = 0;
88 virtual void clip(const QRect &rect, Qt::ClipOperation op);
89 virtual void clip(const QRegion &region, Qt::ClipOperation op);
90 virtual void clip(const QPainterPath &path, Qt::ClipOperation op);
91
92 virtual void clipEnabledChanged() = 0;
93 virtual void penChanged() = 0;
94 virtual void brushChanged() = 0;
95 virtual void brushOriginChanged() = 0;
96 virtual void opacityChanged() = 0;
97 virtual void compositionModeChanged() = 0;
98 virtual void renderHintsChanged() = 0;
99 virtual void transformChanged() = 0;
100
101 virtual void fillRect(const QRectF &rect, const QBrush &brush);
102 virtual void fillRect(const QRectF &rect, const QColor &color);
103
104 virtual void drawRoundedRect(const QRectF &rect, qreal xrad, qreal yrad, Qt::SizeMode mode);
105
106 virtual void drawRects(const QRect *rects, int rectCount) override;
107 virtual void drawRects(const QRectF *rects, int rectCount) override;
108
109 virtual void drawLines(const QLine *lines, int lineCount) override;
110 virtual void drawLines(const QLineF *lines, int lineCount) override;
111
112 virtual void drawEllipse(const QRectF &r) override;
113 virtual void drawEllipse(const QRect &r) override;
114
115 virtual void drawPath(const QPainterPath &path) override;
116
117 virtual void drawPoints(const QPointF *points, int pointCount) override;
118 virtual void drawPoints(const QPoint *points, int pointCount) override;
119
120 virtual void drawPolygon(const QPointF *points, int pointCount, PolygonDrawMode mode) override;
121 virtual void drawPolygon(const QPoint *points, int pointCount, PolygonDrawMode mode) override;
122
123 virtual void drawPixmap(const QRectF &r, const QPixmap &pm, const QRectF &sr) override = 0;
124 virtual void drawPixmap(const QPointF &pos, const QPixmap &pm);
125
126 virtual void drawImage(const QRectF &r, const QImage &pm, const QRectF &sr,
127 Qt::ImageConversionFlags flags = Qt::AutoColor) override = 0;
128 virtual void drawImage(const QPointF &pos, const QImage &image);
129
130 virtual void drawTiledPixmap(const QRectF &r, const QPixmap &pixmap, const QPointF &s) override;
131
132 virtual void drawPixmapFragments(const QPainter::PixmapFragment *fragments, int fragmentCount, const QPixmap &pixmap,
133 QFlags<QPainter::PixmapFragmentHint> hints);
134
135 virtual void updateState(const QPaintEngineState &state) override;
136
137 virtual void drawStaticTextItem(QStaticTextItem *);
138
139 virtual void setState(QPainterState *s);
140 inline QPainterState *state() { return static_cast<QPainterState *>(QPaintEngine::state); }
141 inline const QPainterState *state() const { return static_cast<const QPainterState *>(QPaintEngine::state); }
142
143 virtual void sync() {}
144
145 virtual void beginNativePainting() {}
146 virtual void endNativePainting() {}
147
148 // These flags are needed in the implementation of paint buffers.
149 enum Flags
150 {
151 DoNotEmulate = 0x01, // If set, QPainter will not wrap this engine in an emulation engine.
152 IsEmulationEngine = 0x02 // If set, this object is a QEmulationEngine.
153 };
154 virtual uint flags() const {return 0;}
155 virtual bool requiresPretransformedGlyphPositions(QFontEngine *fontEngine, const QTransform &m) const;
156 virtual bool shouldDrawCachedGlyphs(QFontEngine *fontEngine, const QTransform &m) const;
157
158protected:
159 QPaintEngineEx(QPaintEngineExPrivate &data);
160};
161
162class Q_GUI_EXPORT QPaintEngineExPrivate : public QPaintEnginePrivate
163{
164 Q_DECLARE_PUBLIC(QPaintEngineEx)
165public:
166 QPaintEngineExPrivate();
167 ~QPaintEngineExPrivate();
168
169 void replayClipOperations();
170 bool hasClipOperations() const;
171
172 QStroker stroker;
173 QDashStroker dasher;
174 StrokeHandler *strokeHandler;
175 QStrokerOps *activeStroker;
176 QPen strokerPen;
177
178 QRect exDeviceRect;
179};
180
181QT_END_NAMESPACE
182
183#endif
184

source code of qtbase/src/gui/painting/qpaintengineex_p.h