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39
40#ifndef QPIXMAPFILTER_H
41#define QPIXMAPFILTER_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 <QtWidgets/private/qtwidgetsglobal_p.h>
55#include <QtCore/qnamespace.h>
56#include <QtGui/qpixmap.h>
57#include <QtWidgets/qgraphicseffect.h>
58
59QT_REQUIRE_CONFIG(graphicseffect);
60
61QT_BEGIN_NAMESPACE
62
63class QPainter;
64class QPlatformPixmap;
65
66class QPixmapFilterPrivate;
67
68class Q_WIDGETS_EXPORT QPixmapFilter : public QObject
69{
70 Q_OBJECT
71 Q_DECLARE_PRIVATE(QPixmapFilter)
72public:
73 virtual ~QPixmapFilter() = 0;
74
75 enum FilterType {
76 ConvolutionFilter,
77 ColorizeFilter,
78 DropShadowFilter,
79 BlurFilter,
80
81 UserFilter = 1024
82 };
83
84 FilterType type() const;
85
86 virtual QRectF boundingRectFor(const QRectF &rect) const;
87
88 virtual void draw(QPainter *painter, const QPointF &p, const QPixmap &src, const QRectF &srcRect = QRectF()) const = 0;
89
90protected:
91 QPixmapFilter(QPixmapFilterPrivate &d, FilterType type, QObject *parent);
92 QPixmapFilter(FilterType type, QObject *parent);
93};
94
95class QPixmapConvolutionFilterPrivate;
96
97class Q_WIDGETS_EXPORT QPixmapConvolutionFilter : public QPixmapFilter
98{
99 Q_OBJECT
100 Q_DECLARE_PRIVATE(QPixmapConvolutionFilter)
101
102public:
103 QPixmapConvolutionFilter(QObject *parent = nullptr);
104 ~QPixmapConvolutionFilter();
105
106 void setConvolutionKernel(const qreal *matrix, int rows, int columns);
107
108 QRectF boundingRectFor(const QRectF &rect) const override;
109 void draw(QPainter *painter, const QPointF &dest, const QPixmap &src, const QRectF &srcRect = QRectF()) const override;
110
111private:
112 friend class QVGPixmapConvolutionFilter;
113 const qreal *convolutionKernel() const;
114 int rows() const;
115 int columns() const;
116};
117
118class QPixmapBlurFilterPrivate;
119
120class Q_WIDGETS_EXPORT QPixmapBlurFilter : public QPixmapFilter
121{
122 Q_OBJECT
123 Q_DECLARE_PRIVATE(QPixmapBlurFilter)
124
125public:
126 QPixmapBlurFilter(QObject *parent = nullptr);
127 ~QPixmapBlurFilter();
128
129 void setRadius(qreal radius);
130 void setBlurHints(QGraphicsBlurEffect::BlurHints hints);
131
132 qreal radius() const;
133 QGraphicsBlurEffect::BlurHints blurHints() const;
134
135 QRectF boundingRectFor(const QRectF &rect) const override;
136 void draw(QPainter *painter, const QPointF &dest, const QPixmap &src, const QRectF &srcRect = QRectF()) const override;
137};
138
139class QPixmapColorizeFilterPrivate;
140
141class Q_WIDGETS_EXPORT QPixmapColorizeFilter : public QPixmapFilter
142{
143 Q_OBJECT
144 Q_DECLARE_PRIVATE(QPixmapColorizeFilter)
145
146public:
147 QPixmapColorizeFilter(QObject *parent = nullptr);
148 ~QPixmapColorizeFilter();
149
150 void setColor(const QColor& color);
151 QColor color() const;
152
153 void setStrength(qreal strength);
154 qreal strength() const;
155
156 void draw(QPainter *painter, const QPointF &dest, const QPixmap &src, const QRectF &srcRect = QRectF()) const override;
157};
158
159class QPixmapDropShadowFilterPrivate;
160
161class Q_WIDGETS_EXPORT QPixmapDropShadowFilter : public QPixmapFilter
162{
163 Q_OBJECT
164 Q_DECLARE_PRIVATE(QPixmapDropShadowFilter)
165
166public:
167 QPixmapDropShadowFilter(QObject *parent = nullptr);
168 ~QPixmapDropShadowFilter();
169
170 QRectF boundingRectFor(const QRectF &rect) const override;
171 void draw(QPainter *p, const QPointF &pos, const QPixmap &px, const QRectF &src = QRectF()) const override;
172
173 qreal blurRadius() const;
174 void setBlurRadius(qreal radius);
175
176 QColor color() const;
177 void setColor(const QColor &color);
178
179 QPointF offset() const;
180 void setOffset(const QPointF &offset);
181 inline void setOffset(qreal dx, qreal dy) { setOffset(QPointF(dx, dy)); }
182};
183
184QT_END_NAMESPACE
185
186#endif // QPIXMAPFILTER_H
187