qt5: add clipboard support

If a Qt application shall use the clipboard, this must be configured as:

<config clipboard="yes">

Fixes #1749

repos/libports/lib/mk/qt5_qpa_nitpicker.mk

@@ -10,6 +10,7 @@ SRC_CC = qgenericunixeventdispatcher.cpp \
          qeglconvenience.cpp
 
 SRC_CC += main.cpp \
+          qgenodeclipboard.cpp \
           qnitpickerglcontext.cpp \
           qnitpickerintegration.cpp \
           qnitpickerplatformwindow.cpp \

repos/libports/run/qt5_common.inc

@@ -67,9 +67,12 @@ proc qt5_start_nodes { feature_arg } {
 				<service name="Input"> <child name="ps2_drv" /> </service>
 	}
 	append start_nodes {
+				<service name="Report"> <child name="report_rom"/> </service>
 				<any-service> <parent /> <any-child /> </any-service>
 			</route>
 			<config>
+				<report focus="yes"/>
+
 				<domain name="pointer" layer="1" label="no" content="client" origin="pointer" />
 				<domain name="default" layer="2" label="no" content="client" focus="click" hover="always" />
 
@@ -101,6 +104,7 @@ proc qt5_start_nodes { feature_arg } {
 					<policy label="decorator -> pointer"        report="wm -> pointer"/>
 					<policy label="layouter -> hover"           report="decorator -> hover"/>
 					<policy label="wm -> focus"                 report="layouter -> focus"/>
+					<policy label="clipboard -> focus"          report="nitpicker -> focus"/>
 				</rom>
 			</config>
 		</start>

repos/libports/src/lib/qt5/qtbase/src/plugins/platforms/nitpicker/qgenodeclipboard.cpp

@@ -0,0 +1,140 @@
+/*
+ * \brief  QGenodeClipboard
+ * \author Christian Prochaska
+ * \date   2015-09-18
+ */
+
+/*
+ * Copyright (C) 2015 Genode Labs GmbH
+ *
+ * This file is part of the Genode OS framework, which is distributed
+ * under the terms of the GNU General Public License version 2.
+ */
+
+#include "qgenodeclipboard.h"
+
+#ifndef QT_NO_CLIPBOARD
+
+/* Genode includes */
+#include <os/config.h>
+#include <util/xml_node.h>
+
+/* Qt includes */
+#include <QMimeData>
+
+QT_BEGIN_NAMESPACE
+
+
+static constexpr bool verbose = false;
+
+
+QGenodeClipboard::QGenodeClipboard(Genode::Signal_receiver &sig_rcv)
+: _clipboard_signal_dispatcher(sig_rcv, *this, &QGenodeClipboard::_handle_clipboard)
+{
+	try {
+
+		if (Genode::config()->xml_node().attribute("clipboard").has_value("yes")) {
+
+			try {
+
+				_clipboard_ds = new (Genode::env()->heap())
+					Genode::Attached_rom_dataspace("clipboard");
+
+				_clipboard_ds->sigh(_clipboard_signal_dispatcher);
+				_clipboard_ds->update();
+
+			} catch (...) { }
+
+			try {
+				_clipboard_reporter = new (Genode::env()->heap())
+					Genode::Reporter("clipboard");
+				_clipboard_reporter->enabled(true);
+			} catch (...) {	}
+
+		}
+
+	} catch (...) { }
+}
+
+
+QGenodeClipboard::~QGenodeClipboard()
+{
+	free(_decoded_clipboard_content);
+	destroy(Genode::env()->heap(), _clipboard_ds);
+	destroy(Genode::env()->heap(), _clipboard_reporter);
+}
+
+
+void QGenodeClipboard::_handle_clipboard(unsigned int)
+{
+	emitChanged(QClipboard::Clipboard);
+}
+
+
+QMimeData *QGenodeClipboard::mimeData(QClipboard::Mode mode)
+{
+	if (!_clipboard_ds)
+		return 0;
+
+	_clipboard_ds->update();
+
+	if (!_clipboard_ds->is_valid()) {
+		if (verbose)
+			PERR("invalid clipboard dataspace");
+		return 0;
+	}
+
+	char *xml_data = _clipboard_ds->local_addr<char>();
+
+	try {
+		Genode::Xml_node node(xml_data);
+
+		if (!node.has_type("clipboard")) {
+			PERR("invalid clipboard xml syntax");
+			return 0;
+		}
+
+		free(_decoded_clipboard_content);
+
+		_decoded_clipboard_content = (char*)malloc(node.content_size());
+
+		if (!_decoded_clipboard_content) {
+			PERR("could not allocate buffer for decoded clipboard content");
+			return 0;
+		}
+
+		_mimedata->setText(QString::fromUtf8(_decoded_clipboard_content,
+		                                     node.decoded_content(_decoded_clipboard_content,
+		                                                          node.content_size())));
+
+	} catch (Genode::Xml_node::Invalid_syntax) {
+		PERR("invalid clipboard xml syntax");
+		return 0;
+	}
+
+	return _mimedata;
+}
+
+
+void QGenodeClipboard::setMimeData(QMimeData *data, QClipboard::Mode mode)
+{
+	if (!data || !data->hasText() || !supportsMode(mode))
+		return;
+
+	QString text = data->text();
+	QByteArray utf8text = text.toUtf8();
+
+	if (!_clipboard_reporter)
+		return;
+
+	try {
+		Genode::Reporter::Xml_generator xml(*_clipboard_reporter, [&] () {
+			xml.append_sanitized(utf8text.constData(), utf8text.size()); });
+	} catch (...) {
+		PERR("could not write clipboard data");
+	}
+}
+
+QT_END_NAMESPACE
+
+#endif /* QT_NO_CLIPBOARD */

repos/libports/src/lib/qt5/qtbase/src/plugins/platforms/nitpicker/qgenodeclipboard.h

@@ -0,0 +1,57 @@
+/*
+ * \brief  QGenodeClipboard
+ * \author Christian Prochaska
+ * \date   2015-09-18
+ */
+
+/*
+ * Copyright (C) 2015 Genode Labs GmbH
+ *
+ * This file is part of the Genode OS framework, which is distributed
+ * under the terms of the GNU General Public License version 2.
+ */
+
+#ifndef _QGENODECLIPBOARD_H_
+#define _QGENODECLIPBOARD_H_
+
+#include <QtCore/qglobal.h>
+
+#ifndef QT_NO_CLIPBOARD
+
+/* Genode includes */
+#include <os/attached_rom_dataspace.h>
+#include <os/reporter.h>
+#include <qoost/qmember.h>
+
+/* Qt includes */
+#include <qpa/qplatformclipboard.h>
+
+QT_BEGIN_NAMESPACE
+
+class QGenodeClipboard : public QPlatformClipboard
+{
+	private:
+
+		Genode::Attached_rom_dataspace              *_clipboard_ds = nullptr;
+		Genode::Signal_dispatcher<QGenodeClipboard>  _clipboard_signal_dispatcher;
+
+		Genode::Reporter *_clipboard_reporter = nullptr;
+
+		char *_decoded_clipboard_content = nullptr;
+
+		QMember<QMimeData> _mimedata;
+
+		void _handle_clipboard(unsigned int);
+
+	public:
+
+		QGenodeClipboard(Genode::Signal_receiver &sig_rcv);
+		~QGenodeClipboard();
+		QMimeData *mimeData(QClipboard::Mode mode = QClipboard::Clipboard);
+		void setMimeData(QMimeData *data, QClipboard::Mode mode = QClipboard::Clipboard);
+};
+
+QT_END_NAMESPACE
+
+#endif /* QT_NO_CLIPBOARD */
+#endif /* _QGENODECLIPBOARD_H_ */

repos/libports/src/lib/qt5/qtbase/src/plugins/platforms/nitpicker/qnitpickerintegration.cpp

@@ -13,6 +13,7 @@
 
 /* Qt includes */
 #include <QtGui/private/qguiapplication_p.h>
+#include "qgenodeclipboard.h"
 #include "qnitpickerglcontext.h"
 #include "qnitpickerintegration.h"
 #include "qnitpickerplatformwindow.h"
@@ -87,10 +88,18 @@ QPlatformFontDatabase *QNitpickerIntegration::fontDatabase() const
 }
 
 
+#ifndef QT_NO_CLIPBOARD
+QPlatformClipboard *QNitpickerIntegration::clipboard() const
+{
+	static QGenodeClipboard cb(_signal_receiver());
+	return &cb;
+}
+#endif
+
+
 QPlatformOpenGLContext *QNitpickerIntegration::createPlatformOpenGLContext(QOpenGLContext *context) const
 {
     return new QNitpickerGLContext(context);
 }
 
 QT_END_NAMESPACE
-

repos/libports/src/lib/qt5/qtbase/src/plugins/platforms/nitpicker/qnitpickerintegration.h

@@ -54,6 +54,9 @@ class QNitpickerIntegration : public QPlatformIntegration
 
 		QPlatformFontDatabase *fontDatabase() const override;
 
+#ifndef QT_NO_CLIPBOARD
+		QPlatformClipboard *clipboard() const override;
+#endif
 		QPlatformOpenGLContext *createPlatformOpenGLContext(QOpenGLContext *context) const override;
 };
 

repos/ports/run/arora.run

@@ -9,7 +9,7 @@ set feature(Nic) 1
 append build_components [qt5_build_components feature]
 
 append build_components {
-	server/loader server/tar_rom server/nit_fb app/launchpad test/nitpicker
+	server/clipboard server/loader server/tar_rom server/nit_fb app/launchpad test/nitpicker
 	app/arora
 }
 
@@ -39,19 +39,36 @@ append config [qt5_parent_provides feature]
 append config {
 	</parent-provides>
 	<default-route>
-		<any-service> <parent/> <child name="wm"/> <any-child/> </any-service>
+		<any-service> <parent/> <any-child/> </any-service>
 	</default-route>}
 
 append config [qt5_start_nodes feature]
 
 append config {
+
+	<start name="clipboard">
+		<resource name="RAM" quantum="4M"/>
+		<provides>
+			<service name="ROM"/>
+			<service name="Report"/>
+		</provides>
+		<config>
+			<policy label="arora -> clipboard" domain="default"  />
+		</config>
+		<route>
+			<service name="ROM"> <child name="report_rom"/> </service>
+			<any-service> <parent/> </any-service>
+		</route>
+	</start>
+
 	<start name="loader">
 		<resource name="RAM" quantum="2M"/>
 		<provides><service name="Loader"/></provides>
 	</start>
+
 	<start name="arora">
 		<resource name="RAM" quantum="2G"/>
-		<config>
+		<config clipboard="yes">
 			<libc stdout="/dev/log" stderr="/dev/log">
 				<vfs>
 					<dir name="dev"> <log/> </dir>
@@ -59,6 +76,14 @@ append config {
 				</vfs>
 			</libc>
 		</config>
+		<route>
+			<service name="Nitpicker"> <child name="wm"/> </service>
+			<service name="Report"> <child name="clipboard"/> </service>
+			<service name="ROM">
+				<if-arg key="label" value="clipboard"/> <child name="clipboard"/>
+			</service>
+			<any-service> <parent/> <any-child/> </any-service>
+		</route>
 	</start>
 </config>}
 
@@ -71,6 +96,7 @@ install_config $config
 append boot_modules [qt5_boot_modules feature]
 
 append boot_modules {
+	clipboard
 	loader
 	tar_rom
 	nit_fb