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39
40#include "qfbbackingstore_p.h"
41#include "qfbwindow_p.h"
42#include "qfbscreen_p.h"
43
44#include <qpa/qplatformwindow.h>
45#include <QtGui/qscreen.h>
46#include <QtGui/qpainter.h>
47
48QT_BEGIN_NAMESPACE
49
50QFbBackingStore::QFbBackingStore(QWindow *window)
51 : QPlatformBackingStore(window)
52{
53 if (window->handle())
54 (static_cast<QFbWindow *>(window->handle()))->setBackingStore(this);
55 else
56 (static_cast<QFbScreen *>(window->screen()->handle()))->addPendingBackingStore(bs: this);
57}
58
59QFbBackingStore::~QFbBackingStore()
60{
61}
62
63void QFbBackingStore::flush(QWindow *window, const QRegion &region, const QPoint &offset)
64{
65 Q_UNUSED(window);
66 Q_UNUSED(offset);
67
68 (static_cast<QFbWindow *>(window->handle()))->repaint(region);
69}
70
71void QFbBackingStore::resize(const QSize &size, const QRegion &staticContents)
72{
73 Q_UNUSED(staticContents);
74
75 if (mImage.size() != size)
76 mImage = QImage(size, window()->screen()->handle()->format());
77}
78
79const QImage QFbBackingStore::image()
80{
81 return mImage;
82}
83
84
85QImage QFbBackingStore::toImage() const
86{
87 return mImage;
88}
89
90void QFbBackingStore::lock()
91{
92 mImageMutex.lock();
93}
94
95void QFbBackingStore::unlock()
96{
97 mImageMutex.unlock();
98}
99
100void QFbBackingStore::beginPaint(const QRegion &region)
101{
102 lock();
103
104 if (mImage.hasAlphaChannel()) {
105 QPainter p(&mImage);
106 p.setCompositionMode(QPainter::CompositionMode_Source);
107 for (const QRect &r : region)
108 p.fillRect(r, c: Qt::transparent);
109 }
110}
111
112void QFbBackingStore::endPaint()
113{
114 unlock();
115}
116
117QT_END_NAMESPACE
118

source code of qtbase/src/platformsupport/fbconvenience/qfbbackingstore.cpp