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41
42 #include "qwsembedwidget.h"
43
44 #ifndef QT_NO_QWSEMBEDWIDGET
45
46 #include <qwsdisplay_qws.h>
47 #include <private/qwidget_p.h>
48 #include <private/qwsdisplay_qws_p.h>
49 #include <private/qwscommand_qws_p.h>
50
51 QT_BEGIN_NAMESPACE
52
53 // TODO:
54 // Must remove window decorations from the embedded window
55 // Focus In/Out, Keyboard/Mouse...
56 //
57 // BUG: what if my parent change parent?
58
59 class QWSEmbedWidgetPrivate : public QWidgetPrivate
60 {
61 Q_DECLARE_PUBLIC(QWSEmbedWidget);
62
63 public:
64 QWSEmbedWidgetPrivate(int winId);
65 void updateWindow();
66 void resize(const QSize &size);
67
68 QWidget *window;
69 WId windowId;
70 WId embeddedId;
71 };
72
QWSEmbedWidgetPrivate(int winId)73 QWSEmbedWidgetPrivate::QWSEmbedWidgetPrivate(int winId)
74 : window(0), windowId(0), embeddedId(winId)
75 {
76 }
77
updateWindow()78 void QWSEmbedWidgetPrivate::updateWindow()
79 {
80 Q_Q(QWSEmbedWidget);
81
82 QWidget *win = q->window();
83 if (win == window)
84 return;
85
86 if (window) {
87 window->removeEventFilter(q);
88 QWSEmbedCommand command;
89 command.setData(windowId, embeddedId, QWSEmbedEvent::StopEmbed);
90 QWSDisplay::instance()->d->sendCommand(command);
91 }
92
93 window = win;
94 if (!window)
95 return;
96 windowId = window->winId();
97
98 QWSEmbedCommand command;
99 command.setData(windowId, embeddedId, QWSEmbedEvent::StartEmbed);
100 QWSDisplay::instance()->d->sendCommand(command);
101 window->installEventFilter(q);
102 q->installEventFilter(q);
103 }
104
resize(const QSize & size)105 void QWSEmbedWidgetPrivate::resize(const QSize &size)
106 {
107 if (!window)
108 return;
109
110 Q_Q(QWSEmbedWidget);
111
112 QWSEmbedCommand command;
113 command.setData(windowId, embeddedId, QWSEmbedEvent::Region,
114 QRect(q->mapToGlobal(QPoint(0, 0)), size));
115 QWSDisplay::instance()->d->sendCommand(command);
116 }
117
118 /*!
119 \class QWSEmbedWidget
120 \since 4.2
121 \ingroup qws
122 \ingroup advanced
123
124 \brief The QWSEmbedWidget class enables embedded top-level widgets
125 in Qt for Embedded Linux.
126
127 Note that this class is only available in \l{Qt for Embedded Linux}.
128
129 QWSEmbedWidget inherits QWidget and acts as any other widget, but
130 in addition it is capable of embedding another top-level widget.
131
132 An example of use is when painting directly onto the screen using
133 the QDirectPainter class. Then the reserved region can be embedded
134 into an instance of the QWSEmbedWidget class, providing for
135 example event handling and size policies for the reserved region.
136
137 All that is required to embed a top-level widget is its window ID.
138
139 \sa {Qt for Embedded Linux Architecture}
140 */
141
142 /*!
143 Constructs a widget with the given \a parent, embedding the widget
144 identified by the given window \a id.
145 */
QWSEmbedWidget(WId id,QWidget * parent)146 QWSEmbedWidget::QWSEmbedWidget(WId id, QWidget *parent)
147 : QWidget(*new QWSEmbedWidgetPrivate(id), parent, 0)
148 {
149 Q_D(QWSEmbedWidget);
150 d->updateWindow();
151 }
152
153 /*!
154 Destroys this widget.
155 */
~QWSEmbedWidget()156 QWSEmbedWidget::~QWSEmbedWidget()
157 {
158 Q_D(QWSEmbedWidget);
159 if (!d->window)
160 return;
161
162 QWSEmbedCommand command;
163 command.setData(d->windowId, d->embeddedId, QWSEmbedEvent::StopEmbed);
164 QWSDisplay::instance()->d->sendCommand(command);
165 }
166
167 /*!
168 \reimp
169 */
eventFilter(QObject * object,QEvent * event)170 bool QWSEmbedWidget::eventFilter(QObject *object, QEvent *event)
171 {
172 Q_D(QWSEmbedWidget);
173 if (object == d->window && event->type() == QEvent::Move)
174 resizeEvent(0);
175 else if (object == this && event->type() == QEvent::Hide)
176 d->resize(QSize());
177 return QWidget::eventFilter(object, event);
178 }
179
180 /*!
181 \reimp
182 */
changeEvent(QEvent * event)183 void QWSEmbedWidget::changeEvent(QEvent *event)
184 {
185 Q_D(QWSEmbedWidget);
186 if (event->type() == QEvent::ParentChange)
187 d->updateWindow();
188 }
189
190 /*!
191 \reimp
192 */
resizeEvent(QResizeEvent *)193 void QWSEmbedWidget::resizeEvent(QResizeEvent*)
194 {
195 Q_D(QWSEmbedWidget);
196 d->resize(rect().size());
197 }
198
199 /*!
200 \reimp
201 */
moveEvent(QMoveEvent *)202 void QWSEmbedWidget::moveEvent(QMoveEvent*)
203 {
204 resizeEvent(0);
205 }
206
207 /*!
208 \reimp
209 */
hideEvent(QHideEvent *)210 void QWSEmbedWidget::hideEvent(QHideEvent*)
211 {
212 Q_D(QWSEmbedWidget);
213 d->resize(QSize());
214 }
215
216 /*!
217 \reimp
218 */
showEvent(QShowEvent *)219 void QWSEmbedWidget::showEvent(QShowEvent*)
220 {
221 Q_D(QWSEmbedWidget);
222 d->resize(rect().size());
223 }
224
225 QT_END_NAMESPACE
226
227 #endif // QT_NO_QWSEMBEDWIDGET
228