summaryrefslogtreecommitdiffstats
path: root/src/gui/painting/qwindowsurface_qws_p.h
blob: 2c451201c1fc4562450102c4bf04c47b2eea13e4 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights.  These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef QWINDOWSURFACE_QWS_P_H
#define QWINDOWSURFACE_QWS_P_H

//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists purely as an
// implementation detail.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//

#include "qwindowsurface_p.h"
#include <qregion.h>
#include <qimage.h>
#include <qdirectpainter_qws.h>
#include <qmutex.h>
#include <private/qwssharedmemory_p.h>

QT_BEGIN_NAMESPACE

class QScreen;
class QWSWindowSurfacePrivate;

class Q_GUI_EXPORT QWSWindowSurface : public QWindowSurface
{
public:
    QWSWindowSurface();
    QWSWindowSurface(QWidget *widget);
    ~QWSWindowSurface();

    virtual bool isValid() const = 0;

    virtual void setGeometry(const QRect &rect);
    virtual void setGeometry(const QRect &rect, const QRegion &mask);
    virtual void flush(QWidget *widget, const QRegion &region,
                       const QPoint &offset);

    virtual bool move(const QPoint &offset);
    virtual QRegion move(const QPoint &offset, const QRegion &newClip);

    virtual QPoint painterOffset() const; // remove!!!

    virtual void beginPaint(const QRegion &);
    virtual void endPaint(const QRegion &);

    virtual bool lock(int timeout = -1);
    virtual void unlock();

    virtual QString key() const = 0;

    // XXX: not good enough
    virtual QByteArray transientState() const;
    virtual QByteArray permanentState() const;
    virtual void setTransientState(const QByteArray &state);
    virtual void setPermanentState(const QByteArray &state);

    virtual QImage image() const = 0;
    virtual QPaintDevice *paintDevice() = 0;

    const QRegion clipRegion() const;
    void setClipRegion(const QRegion &);

#ifdef QT_QWS_CLIENTBLIT
    virtual const QRegion directRegion() const;
    virtual int directRegionId() const;
    virtual void setDirectRegion(const QRegion &, int);
#endif

    enum SurfaceFlag {
        RegionReserved = 0x1,
        Buffered = 0x2,
        Opaque = 0x4
    };
    Q_DECLARE_FLAGS(SurfaceFlags, SurfaceFlag)

    SurfaceFlags surfaceFlags() const;

    inline bool isRegionReserved() const {
        return surfaceFlags() & RegionReserved;
    }
    inline bool isBuffered() const { return surfaceFlags() & Buffered; }
    inline bool isOpaque() const { return surfaceFlags() & Opaque; }

    int winId() const;
    virtual void releaseSurface();

protected:
    void setSurfaceFlags(SurfaceFlags type);
    void setWinId(int id);

private:
    friend class QWidgetPrivate;

    void invalidateBuffer();

    QWSWindowSurfacePrivate *d_ptr;
};

Q_DECLARE_OPERATORS_FOR_FLAGS(QWSWindowSurface::SurfaceFlags)

class QWSWindowSurfacePrivate
{
public:
    QWSWindowSurfacePrivate();

    void setWinId(int id);

    QWSWindowSurface::SurfaceFlags flags;
    QRegion clip;
#ifdef QT_QWS_CLIENTBLIT
    QRegion direct;
    int directId;
#endif

    int winId;
};

class QWSLock;

class Q_GUI_EXPORT QWSMemorySurface : public QWSWindowSurface
{
public:
    QWSMemorySurface();
    QWSMemorySurface(QWidget *widget);
    ~QWSMemorySurface();

    bool isValid() const;

    QPaintDevice *paintDevice() { return &img; }
    bool scroll(const QRegion &area, int dx, int dy);

    QImage image() const { return img; };
    QPoint painterOffset() const;

    bool lock(int timeout = -1);
    void unlock();

protected:
    QImage::Format preferredImageFormat(const QWidget *widget) const;

#ifndef QT_NO_QWS_MULTIPROCESS
    void setLock(int lockId);
    QWSLock *memlock;
#endif
#ifndef QT_NO_THREAD
    QMutex threadLock;
#endif

    QImage img;
};

class Q_GUI_EXPORT QWSLocalMemSurface : public QWSMemorySurface
{
public:
    QWSLocalMemSurface();
    QWSLocalMemSurface(QWidget *widget);
    ~QWSLocalMemSurface();

    void setGeometry(const QRect &rect);

    QString key() const { return QLatin1String("mem"); }
    QByteArray permanentState() const;

    void setPermanentState(const QByteArray &data);
    virtual void releaseSurface();
protected:
    uchar *mem;
    int memsize;
};

#ifndef QT_NO_QWS_MULTIPROCESS
class Q_GUI_EXPORT QWSSharedMemSurface : public QWSMemorySurface
{
public:
    QWSSharedMemSurface();
    QWSSharedMemSurface(QWidget *widget);
    ~QWSSharedMemSurface();

    void setGeometry(const QRect &rect);

    QString key() const { return QLatin1String("shm"); }
    QByteArray permanentState() const;

    void setPermanentState(const QByteArray &data);

#ifdef QT_QWS_CLIENTBLIT
    virtual void setDirectRegion(const QRegion &, int);
    virtual const QRegion directRegion() const;
#endif
    virtual void releaseSurface();

private:
    bool setMemory(int memId);

    QWSSharedMemory mem;
};
#endif // QT_NO_QWS_MULTIPROCESS

#ifndef QT_NO_PAINTONSCREEN
class Q_GUI_EXPORT QWSOnScreenSurface : public QWSMemorySurface
{
public:
    QWSOnScreenSurface();
    QWSOnScreenSurface(QWidget *widget);
    ~QWSOnScreenSurface();

    bool isValid() const;
    QPoint painterOffset() const;

    QString key() const { return QLatin1String("OnScreen"); }
    QByteArray permanentState() const;

    void setPermanentState(const QByteArray &data);

private:
    void attachToScreen(const QScreen *screen);

    const QScreen *screen;
};
#endif // QT_NO_PAINTONSCREEN

#ifndef QT_NO_PAINT_DEBUG
class Q_GUI_EXPORT QWSYellowSurface : public QWSWindowSurface
{
public:
    QWSYellowSurface(bool isClient = false);
    ~QWSYellowSurface();

    void setDelay(int msec) { delay = msec; }

    bool isValid() const { return true; }

    void flush(QWidget *widget, const QRegion &region, const QPoint &offset);

    QString key() const { return QLatin1String("Yellow"); }
    QByteArray permanentState() const;

    void setPermanentState(const QByteArray &data);

    QPaintDevice *paintDevice() { return &img; }
    QImage image() const { return img; }

private:
    int delay;
    QSize surfaceSize; // client side
    QImage img; // server side
};
#endif // QT_NO_PAINT_DEBUG

#ifndef QT_NO_DIRECTPAINTER

class QScreen;

class Q_GUI_EXPORT QWSDirectPainterSurface : public QWSWindowSurface
{
public:
    QWSDirectPainterSurface(bool isClient = false,
                            QDirectPainter::SurfaceFlag flags = QDirectPainter::NonReserved);
    ~QWSDirectPainterSurface();

    void setReserved() { setSurfaceFlags(RegionReserved); }

    void setGeometry(const QRect &rect) { setRegion(rect); }

    void setRegion(const QRegion &region);
    QRegion region() const { return clipRegion(); }

    void flush(QWidget*, const QRegion &, const QPoint &);

    bool isValid() const { return false; }

    QString key() const { return QLatin1String("DirectPainter"); }
    QByteArray permanentState() const;

    void setPermanentState(const QByteArray &);

    QImage image() const { return QImage(); }
    QPaintDevice *paintDevice() { return 0; }

    // hw: get rid of this
    WId windowId() const { return static_cast<WId>(winId()); }

    QScreen *screen() const { return _screen; }

    void beginPaint(const QRegion &);
    bool lock(int timeout = -1);
    void unlock();

    void setLocking(bool b) { doLocking = b; }

    bool hasPendingRegionEvents() const;

private:
    QScreen *_screen;
#ifndef QT_NO_THREAD
    QMutex threadLock;
#endif

    friend void qt_directpainter_region(QDirectPainter*, const QRegion&, int);
    bool flushingRegionEvents;
    bool synchronous;
    bool doLocking;
};

#endif // QT_NO_DIRECTPAINTER

QT_END_NAMESPACE

#endif // QWINDOWSURFACE_QWS_P_H