qpaintdevicewindow.cpp

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3** Copyright (C) 2015 The Qt Company Ltd.-
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32****************************************************************************/-
33-
34#include "qpaintdevicewindow_p.h"-
35-
36#include <QtGui/QGuiApplication>-
37#include <QtGui/QScreen>-
38-
39QT_BEGIN_NAMESPACE-
40-
41/*!-
42 \class QPaintDeviceWindow-
43 \inmodule QtGui-
44 \since 5.4-
45 \brief Convenience subclass of QWindow that is also a QPaintDevice.-
46-
47 QPaintDeviceWindow is like a regular QWindow, with the added functionality-
48 of being a paint device too. Whenever the content needs to be updated,-
49 the virtual paintEvent() function is called. Subclasses, that reimplement-
50 this function, can then simply open a QPainter on the window.-
51-
52 \note This class cannot directly be used in applications. It rather serves-
53 as a base for subclasses like QOpenGLWindow.-
54-
55 \sa QOpenGLWindow-
56*/-
57-
58/*!-
59 Marks the entire window as dirty and schedules a repaint.-
60-
61 \note Subsequent calls to this function before the next paint-
62 event will get ignored.-
63-
64 \note For non-exposed windows the update is deferred until the-
65 window becomes exposed again.-
66*/-
67void QPaintDeviceWindow::update()-
68{-
69 update(QRect(QPoint(0,0), size()));-
70}
never executed: end of block
0
71-
72/*!-
73 Marks the \a rect of the window as dirty and schedules a repaint.-
74-
75 \note Subsequent calls to this function before the next paint-
76 event will get ignored, but \a rect is added to the region to update.-
77-
78 \note For non-exposed windows the update is deferred until the-
79 window becomes exposed again.-
80*/-
81void QPaintDeviceWindow::update(const QRect &rect)-
82{-
83 Q_D(QPaintDeviceWindow);-
84 d->dirtyRegion += rect;-
85 if (isExposed())
isExposed()Description
TRUEnever evaluated
FALSEnever evaluated
0
86 requestUpdate();
never executed: requestUpdate();
0
87}
never executed: end of block
0
88-
89/*!-
90 Marks the \a region of the window as dirty and schedules a repaint.-
91-
92 \note Subsequent calls to this function before the next paint-
93 event will get ignored, but \a region is added to the region to update.-
94-
95 \note For non-exposed windows the update is deferred until the-
96 window becomes exposed again.-
97*/-
98void QPaintDeviceWindow::update(const QRegion &region)-
99{-
100 Q_D(QPaintDeviceWindow);-
101 d->dirtyRegion += region;-
102 if (isExposed())
isExposed()Description
TRUEnever evaluated
FALSEnever evaluated
0
103 requestUpdate();
never executed: requestUpdate();
0
104}
never executed: end of block
0
105-
106/*!-
107 Handles paint events passed in the \a event parameter.-
108-
109 The default implementation does nothing. Reimplement this function to-
110 perform painting. If necessary, the dirty area is retrievable from-
111 the \a event.-
112*/-
113void QPaintDeviceWindow::paintEvent(QPaintEvent *event)-
114{-
115 Q_UNUSED(event);-
116 // Do nothing-
117}
never executed: end of block
0
118-
119/*!-
120 \internal-
121 */-
122int QPaintDeviceWindow::metric(PaintDeviceMetric metric) const-
123{-
124 QScreen *screen = this->screen();-
125 if (!screen && QGuiApplication::primaryScreen())
!screenDescription
TRUEnever evaluated
FALSEnever evaluated
QGuiApplicatio...rimaryScreen()Description
TRUEnever evaluated
FALSEnever evaluated
0
126 screen = QGuiApplication::primaryScreen();
never executed: screen = QGuiApplication::primaryScreen();
0
127-
128 switch (metric) {-
129 case PdmWidth:
never executed: case PdmWidth:
0
130 return width();
never executed: return width();
0
131 case PdmWidthMM:
never executed: case PdmWidthMM:
0
132 if (screen)
screenDescription
TRUEnever evaluated
FALSEnever evaluated
0
133 return width() * screen->physicalSize().width() / screen->geometry().width();
never executed: return width() * screen->physicalSize().width() / screen->geometry().width();
0
134 break;
never executed: break;
0
135 case PdmHeight:
never executed: case PdmHeight:
0
136 return height();
never executed: return height();
0
137 case PdmHeightMM:
never executed: case PdmHeightMM:
0
138 if (screen)
screenDescription
TRUEnever evaluated
FALSEnever evaluated
0
139 return height() * screen->physicalSize().height() / screen->geometry().height();
never executed: return height() * screen->physicalSize().height() / screen->geometry().height();
0
140 break;
never executed: break;
0
141 case PdmDpiX:
never executed: case PdmDpiX:
0
142 if (screen)
screenDescription
TRUEnever evaluated
FALSEnever evaluated
0
143 return qRound(screen->logicalDotsPerInchX());
never executed: return qRound(screen->logicalDotsPerInchX());
0
144 break;
never executed: break;
0
145 case PdmDpiY:
never executed: case PdmDpiY:
0
146 if (screen)
screenDescription
TRUEnever evaluated
FALSEnever evaluated
0
147 return qRound(screen->logicalDotsPerInchY());
never executed: return qRound(screen->logicalDotsPerInchY());
0
148 break;
never executed: break;
0
149 case PdmPhysicalDpiX:
never executed: case PdmPhysicalDpiX:
0
150 if (screen)
screenDescription
TRUEnever evaluated
FALSEnever evaluated
0
151 return qRound(screen->physicalDotsPerInchX());
never executed: return qRound(screen->physicalDotsPerInchX());
0
152 break;
never executed: break;
0
153 case PdmPhysicalDpiY:
never executed: case PdmPhysicalDpiY:
0
154 if (screen)
screenDescription
TRUEnever evaluated
FALSEnever evaluated
0
155 return qRound(screen->physicalDotsPerInchY());
never executed: return qRound(screen->physicalDotsPerInchY());
0
156 break;
never executed: break;
0
157 case PdmDevicePixelRatio:
never executed: case PdmDevicePixelRatio:
0
158 return int(QWindow::devicePixelRatio());
never executed: return int(QWindow::devicePixelRatio());
0
159 break;
dead code: break;
-
160 case PdmDevicePixelRatioScaled:
never executed: case PdmDevicePixelRatioScaled:
0
161 return int(QWindow::devicePixelRatio() * devicePixelRatioFScale());
never executed: return int(QWindow::devicePixelRatio() * devicePixelRatioFScale());
0
162 break;
dead code: break;
-
163 default:
never executed: default:
0
164 break;
never executed: break;
0
165 }-
166-
167 return QPaintDevice::metric(metric);
never executed: return QPaintDevice::metric(metric);
0
168}-
169-
170/*!-
171 \internal-
172 */-
173void QPaintDeviceWindow::exposeEvent(QExposeEvent *exposeEvent)-
174{-
175 Q_UNUSED(exposeEvent);-
176 Q_D(QPaintDeviceWindow);-
177 if (isExposed()) {
isExposed()Description
TRUEnever evaluated
FALSEnever evaluated
0
178 d->markWindowAsDirty();-
179 // Do not rely on exposeEvent->region() as it has some issues for the-
180 // time being, namely that it is sometimes in local coordinates,-
181 // sometimes relative to the parent, depending on the platform plugin.-
182 // We require local coords here.-
183 d->doFlush(QRect(QPoint(0, 0), size()));-
184 } else if (!d->dirtyRegion.isEmpty()) {
never executed: end of block
!d->dirtyRegion.isEmpty()Description
TRUEnever evaluated
FALSEnever evaluated
0
185 // Updates while non-exposed were ignored. Schedule an update now.-
186 requestUpdate();-
187 }
never executed: end of block
0
188}
never executed: end of block
0
189-
190/*!-
191 \internal-
192 */-
193bool QPaintDeviceWindow::event(QEvent *event)-
194{-
195 Q_D(QPaintDeviceWindow);-
196-
197 if (event->type() == QEvent::UpdateRequest) {
event->type() ...:UpdateRequestDescription
TRUEnever evaluated
FALSEnever evaluated
0
198 if (handle()) // platform window may be gone when the window is closed during app exit
handle()Description
TRUEnever evaluated
FALSEnever evaluated
0
199 d->handleUpdateEvent();
never executed: d->handleUpdateEvent();
0
200 return true;
never executed: return true;
0
201 }-
202-
203 return QWindow::event(event);
never executed: return QWindow::event(event);
0
204}-
205-
206/*!-
207 \internal-
208 */-
209QPaintDeviceWindow::QPaintDeviceWindow(QPaintDeviceWindowPrivate &dd, QWindow *parent)-
210 : QWindow(dd, parent)-
211{-
212}
never executed: end of block
0
213-
214/*!-
215 \internal-
216 */-
217QPaintEngine *QPaintDeviceWindow::paintEngine() const-
218{-
219 return 0;
never executed: return 0;
0
220}-
221-
222QT_END_NAMESPACE-
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