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41
42#ifndef QGRAPHICSEFFECT_P_H
43#define QGRAPHICSEFFECT_P_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 for the convenience
50// of qapplication_*.cpp, qwidget*.cpp and qfiledialog.cpp. This header
51// file may change from version to version without notice, or even be removed.
52//
53// We mean it.
54//
55
56#include "qgraphicseffect.h"
57
58#include <QPixmapCache>
59
60#include <private/qobject_p.h>
61#include <private/qpixmapfilter_p.h>
62
63#ifndef QT_NO_GRAPHICSEFFECT
64QT_BEGIN_NAMESPACE
65
66class QGraphicsEffectSourcePrivate;
67class Q_GUI_EXPORT QGraphicsEffectSource : public QObject
68{
69 Q_OBJECT
70public:
71 ~QGraphicsEffectSource();
72 const QGraphicsItem *graphicsItem() const;
73 const QWidget *widget() const;
74 const QStyleOption *styleOption() const;
75
76 bool isPixmap() const;
77 void draw(QPainter *painter);
78 void update();
79
80 QRectF boundingRect(Qt::CoordinateSystem coordinateSystem = Qt::LogicalCoordinates) const;
81 QRect deviceRect() const;
82 QPixmap pixmap(Qt::CoordinateSystem system = Qt::LogicalCoordinates,
83 QPoint *offset = 0,
84 QGraphicsEffect::PixmapPadMode mode = QGraphicsEffect::PadToEffectiveBoundingRect) const;
85
86protected:
87 QGraphicsEffectSource(QGraphicsEffectSourcePrivate &dd, QObject *parent = 0);
88
89private:
90 Q_DECLARE_PRIVATE(QGraphicsEffectSource)
91 Q_DISABLE_COPY(QGraphicsEffectSource)
92 friend class QGraphicsEffect;
93 friend class QGraphicsEffectPrivate;
94 friend class QGraphicsScenePrivate;
95 friend class QGraphicsItem;
96 friend class QGraphicsItemPrivate;
97 friend class QWidget;
98 friend class QWidgetPrivate;
99};
100
101class QGraphicsEffectSourcePrivate : public QObjectPrivate
102{
103 Q_DECLARE_PUBLIC(QGraphicsEffectSource)
104public:
105 QGraphicsEffectSourcePrivate()
106 : QObjectPrivate()
107 , m_cachedSystem(Qt::DeviceCoordinates)
108 , m_cachedMode(QGraphicsEffect::PadToTransparentBorder)
109 {}
110
111 enum InvalidateReason
112 {
113 TransformChanged,
114 EffectRectChanged,
115 SourceChanged
116 };
117
118 virtual ~QGraphicsEffectSourcePrivate();
119 virtual void detach() = 0;
120 virtual QRectF boundingRect(Qt::CoordinateSystem system) const = 0;
121 virtual QRect deviceRect() const = 0;
122 virtual const QGraphicsItem *graphicsItem() const = 0;
123 virtual const QWidget *widget() const = 0;
124 virtual const QStyleOption *styleOption() const = 0;
125 virtual void draw(QPainter *p) = 0;
126 virtual void update() = 0;
127 virtual bool isPixmap() const = 0;
128 virtual QPixmap pixmap(Qt::CoordinateSystem system, QPoint *offset = 0,
129 QGraphicsEffect::PixmapPadMode mode = QGraphicsEffect::PadToTransparentBorder) const = 0;
130 virtual void effectBoundingRectChanged() = 0;
131
132 void setCachedOffset(const QPoint &offset);
133 void invalidateCache(InvalidateReason reason = SourceChanged) const;
134 Qt::CoordinateSystem currentCachedSystem() const { return m_cachedSystem; }
135 QGraphicsEffect::PixmapPadMode currentCachedMode() const { return m_cachedMode; }
136
137 friend class QGraphicsScenePrivate;
138 friend class QGraphicsItem;
139 friend class QGraphicsItemPrivate;
140
141private:
142 mutable Qt::CoordinateSystem m_cachedSystem;
143 mutable QGraphicsEffect::PixmapPadMode m_cachedMode;
144 mutable QPoint m_cachedOffset;
145 mutable QPixmapCache::Key m_cacheKey;
146};
147
148class Q_GUI_EXPORT QGraphicsEffectPrivate : public QObjectPrivate
149{
150 Q_DECLARE_PUBLIC(QGraphicsEffect)
151public:
152 QGraphicsEffectPrivate() : source(0), isEnabled(1) {}
153
154 inline void setGraphicsEffectSource(QGraphicsEffectSource *newSource)
155 {
156 QGraphicsEffect::ChangeFlags flags;
157 if (source) {
158 flags |= QGraphicsEffect::SourceDetached;
159 source->d_func()->invalidateCache();
160 source->d_func()->detach();
161 delete source;
162 }
163 source = newSource;
164 if (newSource)
165 flags |= QGraphicsEffect::SourceAttached;
166 q_func()->sourceChanged(flags);
167 }
168
169 QGraphicsEffectSource *source;
170 QRectF boundingRect;
171 quint32 isEnabled : 1;
172 quint32 padding : 31; // feel free to use
173};
174
175
176class QGraphicsColorizeEffectPrivate : public QGraphicsEffectPrivate
177{
178 Q_DECLARE_PUBLIC(QGraphicsColorizeEffect)
179public:
180 QGraphicsColorizeEffectPrivate()
181 : opaque(true)
182 {
183 filter = new QPixmapColorizeFilter;
184 }
185 ~QGraphicsColorizeEffectPrivate() { delete filter; }
186
187 QPixmapColorizeFilter *filter;
188 quint32 opaque : 1;
189 quint32 padding : 31;
190};
191
192class QGraphicsBlurEffectPrivate : public QGraphicsEffectPrivate
193{
194 Q_DECLARE_PUBLIC(QGraphicsBlurEffect)
195public:
196 QGraphicsBlurEffectPrivate() : filter(new QPixmapBlurFilter) {}
197 ~QGraphicsBlurEffectPrivate() { delete filter; }
198
199 QPixmapBlurFilter *filter;
200};
201
202class QGraphicsDropShadowEffectPrivate : public QGraphicsEffectPrivate
203{
204 Q_DECLARE_PUBLIC(QGraphicsDropShadowEffect)
205public:
206 QGraphicsDropShadowEffectPrivate() : filter(new QPixmapDropShadowFilter) {}
207 ~QGraphicsDropShadowEffectPrivate() { delete filter; }
208
209 QPixmapDropShadowFilter *filter;
210};
211
212class QGraphicsOpacityEffectPrivate : public QGraphicsEffectPrivate
213{
214 Q_DECLARE_PUBLIC(QGraphicsOpacityEffect)
215public:
216 QGraphicsOpacityEffectPrivate()
217 : opacity(qreal(0.7)), isFullyTransparent(0), isFullyOpaque(0), hasOpacityMask(0) {}
218 ~QGraphicsOpacityEffectPrivate() {}
219
220 qreal opacity;
221 QBrush opacityMask;
222 uint isFullyTransparent : 1;
223 uint isFullyOpaque : 1;
224 uint hasOpacityMask : 1;
225};
226
227QT_END_NAMESPACE
228
229#endif //QT_NO_GRAPHICSEFFECT
230#endif // QGRAPHICSEFFECT_P_H
231
232