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40 | ****************************************************************************/ |
41 | |
42 | #ifndef QGRAPHICSEFFECT_H |
43 | #define QGRAPHICSEFFECT_H |
44 | |
45 | #include <QtCore/qobject.h> |
46 | #include <QtCore/qpoint.h> |
47 | #include <QtCore/qrect.h> |
48 | #include <QtGui/qcolor.h> |
49 | #include <QtGui/qbrush.h> |
50 | |
51 | #ifndef QT_NO_GRAPHICSEFFECT |
52 | QT_BEGIN_HEADER |
53 | |
54 | QT_BEGIN_NAMESPACE |
55 | |
56 | QT_MODULE(Gui) |
57 | |
58 | class QGraphicsItem; |
59 | class QStyleOption; |
60 | class QPainter; |
61 | class QPixmap; |
62 | |
63 | class QGraphicsEffectSource; |
64 | |
65 | class QGraphicsEffectPrivate; |
66 | class Q_GUI_EXPORT QGraphicsEffect : public QObject |
67 | { |
68 | Q_OBJECT |
69 | Q_FLAGS(ChangeFlags) |
70 | Q_PROPERTY(bool enabled READ isEnabled WRITE setEnabled NOTIFY enabledChanged) |
71 | public: |
72 | enum ChangeFlag { |
73 | SourceAttached = 0x1, |
74 | SourceDetached = 0x2, |
75 | SourceBoundingRectChanged = 0x4, |
76 | SourceInvalidated = 0x8 |
77 | }; |
78 | Q_DECLARE_FLAGS(ChangeFlags, ChangeFlag) |
79 | |
80 | enum PixmapPadMode { |
81 | NoPad, |
82 | PadToTransparentBorder, |
83 | PadToEffectiveBoundingRect |
84 | }; |
85 | |
86 | QGraphicsEffect(QObject *parent = 0); |
87 | virtual ~QGraphicsEffect(); |
88 | |
89 | virtual QRectF boundingRectFor(const QRectF &sourceRect) const; |
90 | QRectF boundingRect() const; |
91 | |
92 | bool isEnabled() const; |
93 | |
94 | public Q_SLOTS: |
95 | void setEnabled(bool enable); |
96 | void update(); |
97 | |
98 | Q_SIGNALS: |
99 | void enabledChanged(bool enabled); |
100 | |
101 | protected: |
102 | QGraphicsEffect(QGraphicsEffectPrivate &d, QObject *parent = 0); |
103 | virtual void draw(QPainter *painter) = 0; |
104 | virtual void sourceChanged(ChangeFlags flags); |
105 | void updateBoundingRect(); |
106 | |
107 | bool sourceIsPixmap() const; |
108 | QRectF sourceBoundingRect(Qt::CoordinateSystem system = Qt::LogicalCoordinates) const; |
109 | void drawSource(QPainter *painter); |
110 | QPixmap sourcePixmap(Qt::CoordinateSystem system = Qt::LogicalCoordinates, |
111 | QPoint *offset = 0, |
112 | PixmapPadMode mode = PadToEffectiveBoundingRect) const; |
113 | |
114 | private: |
115 | Q_DECLARE_PRIVATE(QGraphicsEffect) |
116 | Q_DISABLE_COPY(QGraphicsEffect) |
117 | friend class QGraphicsItem; |
118 | friend class QGraphicsItemPrivate; |
119 | friend class QGraphicsScenePrivate; |
120 | friend class QWidget; |
121 | friend class QWidgetPrivate; |
122 | |
123 | public: |
124 | QGraphicsEffectSource *source() const; // internal |
125 | |
126 | }; |
127 | Q_DECLARE_OPERATORS_FOR_FLAGS(QGraphicsEffect::ChangeFlags) |
128 | |
129 | class QGraphicsColorizeEffectPrivate; |
130 | class Q_GUI_EXPORT QGraphicsColorizeEffect: public QGraphicsEffect |
131 | { |
132 | Q_OBJECT |
133 | Q_PROPERTY(QColor color READ color WRITE setColor NOTIFY colorChanged) |
134 | Q_PROPERTY(qreal strength READ strength WRITE setStrength NOTIFY strengthChanged) |
135 | public: |
136 | QGraphicsColorizeEffect(QObject *parent = 0); |
137 | ~QGraphicsColorizeEffect(); |
138 | |
139 | QColor color() const; |
140 | qreal strength() const; |
141 | |
142 | public Q_SLOTS: |
143 | void setColor(const QColor &c); |
144 | void setStrength(qreal strength); |
145 | |
146 | Q_SIGNALS: |
147 | void colorChanged(const QColor &color); |
148 | void strengthChanged(qreal strength); |
149 | |
150 | protected: |
151 | void draw(QPainter *painter); |
152 | |
153 | private: |
154 | Q_DECLARE_PRIVATE(QGraphicsColorizeEffect) |
155 | Q_DISABLE_COPY(QGraphicsColorizeEffect) |
156 | }; |
157 | |
158 | class QGraphicsBlurEffectPrivate; |
159 | class Q_GUI_EXPORT QGraphicsBlurEffect: public QGraphicsEffect |
160 | { |
161 | Q_OBJECT |
162 | Q_FLAGS(BlurHint BlurHints) |
163 | Q_PROPERTY(qreal blurRadius READ blurRadius WRITE setBlurRadius NOTIFY blurRadiusChanged) |
164 | Q_PROPERTY(BlurHints blurHints READ blurHints WRITE setBlurHints NOTIFY blurHintsChanged) |
165 | public: |
166 | enum BlurHint { |
167 | PerformanceHint = 0x00, |
168 | QualityHint = 0x01, |
169 | AnimationHint = 0x02 |
170 | }; |
171 | Q_DECLARE_FLAGS(BlurHints, BlurHint) |
172 | |
173 | QGraphicsBlurEffect(QObject *parent = 0); |
174 | ~QGraphicsBlurEffect(); |
175 | |
176 | QRectF boundingRectFor(const QRectF &rect) const; |
177 | qreal blurRadius() const; |
178 | BlurHints blurHints() const; |
179 | |
180 | public Q_SLOTS: |
181 | void setBlurRadius(qreal blurRadius); |
182 | void setBlurHints(BlurHints hints); |
183 | |
184 | Q_SIGNALS: |
185 | void blurRadiusChanged(qreal blurRadius); |
186 | void blurHintsChanged(BlurHints hints); |
187 | |
188 | protected: |
189 | void draw(QPainter *painter); |
190 | |
191 | private: |
192 | Q_DECLARE_PRIVATE(QGraphicsBlurEffect) |
193 | Q_DISABLE_COPY(QGraphicsBlurEffect) |
194 | }; |
195 | |
196 | Q_DECLARE_OPERATORS_FOR_FLAGS(QGraphicsBlurEffect::BlurHints) |
197 | |
198 | class QGraphicsDropShadowEffectPrivate; |
199 | class Q_GUI_EXPORT QGraphicsDropShadowEffect: public QGraphicsEffect |
200 | { |
201 | Q_OBJECT |
202 | Q_PROPERTY(QPointF offset READ offset WRITE setOffset NOTIFY offsetChanged) |
203 | Q_PROPERTY(qreal xOffset READ xOffset WRITE setXOffset NOTIFY offsetChanged) |
204 | Q_PROPERTY(qreal yOffset READ yOffset WRITE setYOffset NOTIFY offsetChanged) |
205 | Q_PROPERTY(qreal blurRadius READ blurRadius WRITE setBlurRadius NOTIFY blurRadiusChanged) |
206 | Q_PROPERTY(QColor color READ color WRITE setColor NOTIFY colorChanged) |
207 | public: |
208 | QGraphicsDropShadowEffect(QObject *parent = 0); |
209 | ~QGraphicsDropShadowEffect(); |
210 | |
211 | QRectF boundingRectFor(const QRectF &rect) const; |
212 | QPointF offset() const; |
213 | |
214 | inline qreal xOffset() const |
215 | { return offset().x(); } |
216 | |
217 | inline qreal yOffset() const |
218 | { return offset().y(); } |
219 | |
220 | qreal blurRadius() const; |
221 | QColor color() const; |
222 | |
223 | public Q_SLOTS: |
224 | void setOffset(const QPointF &ofs); |
225 | |
226 | inline void setOffset(qreal dx, qreal dy) |
227 | { setOffset(QPointF(dx, dy)); } |
228 | |
229 | inline void setOffset(qreal d) |
230 | { setOffset(QPointF(d, d)); } |
231 | |
232 | inline void setXOffset(qreal dx) |
233 | { setOffset(QPointF(dx, yOffset())); } |
234 | |
235 | inline void setYOffset(qreal dy) |
236 | { setOffset(QPointF(xOffset(), dy)); } |
237 | |
238 | void setBlurRadius(qreal blurRadius); |
239 | void setColor(const QColor &color); |
240 | |
241 | Q_SIGNALS: |
242 | void offsetChanged(const QPointF &offset); |
243 | void blurRadiusChanged(qreal blurRadius); |
244 | void colorChanged(const QColor &color); |
245 | |
246 | protected: |
247 | void draw(QPainter *painter); |
248 | |
249 | private: |
250 | Q_DECLARE_PRIVATE(QGraphicsDropShadowEffect) |
251 | Q_DISABLE_COPY(QGraphicsDropShadowEffect) |
252 | }; |
253 | |
254 | class QGraphicsOpacityEffectPrivate; |
255 | class Q_GUI_EXPORT QGraphicsOpacityEffect: public QGraphicsEffect |
256 | { |
257 | Q_OBJECT |
258 | Q_PROPERTY(qreal opacity READ opacity WRITE setOpacity NOTIFY opacityChanged) |
259 | Q_PROPERTY(QBrush opacityMask READ opacityMask WRITE setOpacityMask NOTIFY opacityMaskChanged) |
260 | public: |
261 | QGraphicsOpacityEffect(QObject *parent = 0); |
262 | ~QGraphicsOpacityEffect(); |
263 | |
264 | qreal opacity() const; |
265 | QBrush opacityMask() const; |
266 | |
267 | public Q_SLOTS: |
268 | void setOpacity(qreal opacity); |
269 | void setOpacityMask(const QBrush &mask); |
270 | |
271 | Q_SIGNALS: |
272 | void opacityChanged(qreal opacity); |
273 | void opacityMaskChanged(const QBrush &mask); |
274 | |
275 | protected: |
276 | void draw(QPainter *painter); |
277 | |
278 | private: |
279 | Q_DECLARE_PRIVATE(QGraphicsOpacityEffect) |
280 | Q_DISABLE_COPY(QGraphicsOpacityEffect) |
281 | }; |
282 | |
283 | QT_END_NAMESPACE |
284 | |
285 | QT_END_HEADER |
286 | #endif //QT_NO_GRAPHICSEFFECT |
287 | |
288 | #endif // QGRAPHICSEFFECT_H |
289 | |
290 | |