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41
42#ifndef QPIXMAPFILTER_H
43#define QPIXMAPFILTER_H
44
45//
46// W A R N I N G
47// -------------
48//
49// This file is not part of the Qt API. It exists purely as an
50// implementation detail. This header file may change from version to
51// version without notice, or even be removed.
52//
53// We mean it.
54//
55
56#include <QtCore/qnamespace.h>
57#include <QtGui/qpixmap.h>
58#include <QtGui/qgraphicseffect.h>
59
60#ifndef QT_NO_GRAPHICSEFFECT
61QT_BEGIN_HEADER
62
63QT_BEGIN_NAMESPACE
64
65QT_MODULE(Gui)
66
67class QPainter;
68class QPixmapData;
69
70class QPixmapFilterPrivate;
71
72class Q_GUI_EXPORT QPixmapFilter : public QObject
73{
74 Q_OBJECT
75 Q_DECLARE_PRIVATE(QPixmapFilter)
76public:
77 virtual ~QPixmapFilter() = 0;
78
79 enum FilterType {
80 ConvolutionFilter,
81 ColorizeFilter,
82 DropShadowFilter,
83 BlurFilter,
84
85 UserFilter = 1024
86 };
87
88 FilterType type() const;
89
90 virtual QRectF boundingRectFor(const QRectF &rect) const;
91
92 virtual void draw(QPainter *painter, const QPointF &p, const QPixmap &src, const QRectF &srcRect = QRectF()) const = 0;
93
94protected:
95 QPixmapFilter(QPixmapFilterPrivate &d, FilterType type, QObject *parent);
96 QPixmapFilter(FilterType type, QObject *parent);
97};
98
99class QPixmapConvolutionFilterPrivate;
100
101class Q_GUI_EXPORT QPixmapConvolutionFilter : public QPixmapFilter
102{
103 Q_OBJECT
104 Q_DECLARE_PRIVATE(QPixmapConvolutionFilter)
105
106public:
107 QPixmapConvolutionFilter(QObject *parent = 0);
108 ~QPixmapConvolutionFilter();
109
110 void setConvolutionKernel(const qreal *matrix, int rows, int columns);
111
112 QRectF boundingRectFor(const QRectF &rect) const;
113 void draw(QPainter *painter, const QPointF &dest, const QPixmap &src, const QRectF &srcRect = QRectF()) const;
114
115private:
116 friend class QGLPixmapConvolutionFilter;
117 friend class QVGPixmapConvolutionFilter;
118 const qreal *convolutionKernel() const;
119 int rows() const;
120 int columns() const;
121};
122
123class QPixmapBlurFilterPrivate;
124
125class Q_GUI_EXPORT QPixmapBlurFilter : public QPixmapFilter
126{
127 Q_OBJECT
128 Q_DECLARE_PRIVATE(QPixmapBlurFilter)
129
130public:
131 QPixmapBlurFilter(QObject *parent = 0);
132 ~QPixmapBlurFilter();
133
134 void setRadius(qreal radius);
135 void setBlurHints(QGraphicsBlurEffect::BlurHints hints);
136
137 qreal radius() const;
138 QGraphicsBlurEffect::BlurHints blurHints() const;
139
140 QRectF boundingRectFor(const QRectF &rect) const;
141 void draw(QPainter *painter, const QPointF &dest, const QPixmap &src, const QRectF &srcRect = QRectF()) const;
142
143private:
144 friend class QGLPixmapBlurFilter;
145};
146
147class QPixmapColorizeFilterPrivate;
148
149class Q_GUI_EXPORT QPixmapColorizeFilter : public QPixmapFilter
150{
151 Q_OBJECT
152 Q_DECLARE_PRIVATE(QPixmapColorizeFilter)
153
154public:
155 QPixmapColorizeFilter(QObject *parent = 0);
156
157 void setColor(const QColor& color);
158 QColor color() const;
159
160 void setStrength(qreal strength);
161 qreal strength() const;
162
163 void draw(QPainter *painter, const QPointF &dest, const QPixmap &src, const QRectF &srcRect = QRectF()) const;
164};
165
166class QPixmapDropShadowFilterPrivate;
167
168class Q_GUI_EXPORT QPixmapDropShadowFilter : public QPixmapFilter
169{
170 Q_OBJECT
171 Q_DECLARE_PRIVATE(QPixmapDropShadowFilter)
172
173public:
174 QPixmapDropShadowFilter(QObject *parent = 0);
175 ~QPixmapDropShadowFilter();
176
177 QRectF boundingRectFor(const QRectF &rect) const;
178 void draw(QPainter *p, const QPointF &pos, const QPixmap &px, const QRectF &src = QRectF()) const;
179
180 qreal blurRadius() const;
181 void setBlurRadius(qreal radius);
182
183 QColor color() const;
184 void setColor(const QColor &color);
185
186 QPointF offset() const;
187 void setOffset(const QPointF &offset);
188 inline void setOffset(qreal dx, qreal dy) { setOffset(QPointF(dx, dy)); }
189};
190
191QT_END_NAMESPACE
192
193QT_END_HEADER
194
195#endif //QT_NO_GRAPHICSEFFECT
196#endif // QPIXMAPFILTER_H
197