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39
40#ifndef QGRAPHICSEFFECT_P_H
41#define QGRAPHICSEFFECT_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 for the convenience
48// of qapplication_*.cpp, qwidget*.cpp and qfiledialog.cpp. This header
49// file may change from version to version without notice, or even be removed.
50//
51// We mean it.
52//
53
54#include <QtWidgets/private/qtwidgetsglobal_p.h>
55#include "qgraphicseffect.h"
56
57#include <QPixmapCache>
58
59#include <private/qobject_p.h>
60#include <private/qpixmapfilter_p.h>
61
62QT_REQUIRE_CONFIG(graphicseffect);
63
64QT_BEGIN_NAMESPACE
65
66class QGraphicsEffectSourcePrivate;
67class Q_WIDGETS_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 = nullptr,
84 QGraphicsEffect::PixmapPadMode mode = QGraphicsEffect::PadToEffectiveBoundingRect) const;
85
86protected:
87 QGraphicsEffectSource(QGraphicsEffectSourcePrivate &dd, QObject *parent = nullptr);
88
89private:
90 Q_DECLARE_PRIVATE(QGraphicsEffectSource)
91 Q_DISABLE_COPY_MOVE(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 = nullptr,
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_WIDGETS_EXPORT QGraphicsEffectPrivate : public QObjectPrivate
149{
150 Q_DECLARE_PUBLIC(QGraphicsEffect)
151public:
152 QGraphicsEffectPrivate() : source(nullptr), isEnabled(1) {}
153 ~QGraphicsEffectPrivate();
154
155 inline void setGraphicsEffectSource(QGraphicsEffectSource *newSource)
156 {
157 QGraphicsEffect::ChangeFlags flags;
158 if (source) {
159 flags |= QGraphicsEffect::SourceDetached;
160 source->d_func()->invalidateCache();
161 source->d_func()->detach();
162 delete source;
163 }
164 source = newSource;
165 if (newSource)
166 flags |= QGraphicsEffect::SourceAttached;
167 q_func()->sourceChanged(flags);
168 }
169
170 QGraphicsEffectSource *source;
171 QRectF boundingRect;
172 quint32 isEnabled : 1;
173 quint32 padding : 31; // feel free to use
174};
175
176
177class QGraphicsColorizeEffectPrivate : public QGraphicsEffectPrivate
178{
179 Q_DECLARE_PUBLIC(QGraphicsColorizeEffect)
180public:
181 QGraphicsColorizeEffectPrivate()
182 : opaque(true)
183 {
184 filter = new QPixmapColorizeFilter;
185 }
186 ~QGraphicsColorizeEffectPrivate() { delete filter; }
187
188 QPixmapColorizeFilter *filter;
189 quint32 opaque : 1;
190 quint32 padding : 31;
191};
192
193class QGraphicsBlurEffectPrivate : public QGraphicsEffectPrivate
194{
195 Q_DECLARE_PUBLIC(QGraphicsBlurEffect)
196public:
197 QGraphicsBlurEffectPrivate() : filter(new QPixmapBlurFilter) {}
198 ~QGraphicsBlurEffectPrivate() { delete filter; }
199
200 QPixmapBlurFilter *filter;
201};
202
203class QGraphicsDropShadowEffectPrivate : public QGraphicsEffectPrivate
204{
205 Q_DECLARE_PUBLIC(QGraphicsDropShadowEffect)
206public:
207 QGraphicsDropShadowEffectPrivate() : filter(new QPixmapDropShadowFilter) {}
208 ~QGraphicsDropShadowEffectPrivate() { delete filter; }
209
210 QPixmapDropShadowFilter *filter;
211};
212
213class QGraphicsOpacityEffectPrivate : public QGraphicsEffectPrivate
214{
215 Q_DECLARE_PUBLIC(QGraphicsOpacityEffect)
216public:
217 QGraphicsOpacityEffectPrivate()
218 : opacity(qreal(0.7)), isFullyTransparent(0), isFullyOpaque(0), hasOpacityMask(0) {}
219 ~QGraphicsOpacityEffectPrivate() {}
220
221 qreal opacity;
222 QBrush opacityMask;
223 uint isFullyTransparent : 1;
224 uint isFullyOpaque : 1;
225 uint hasOpacityMask : 1;
226};
227
228QT_END_NAMESPACE
229
230#endif // QGRAPHICSEFFECT_P_H
231

source code of qtbase/src/widgets/effects/qgraphicseffect_p.h