qt-everywhere-src-5.14.1/qtvirtualkeyboard/src/virtualkeyboard/desktopinputpanel.cpp - orbit - Git at Google

 /****************************************************************************
 **
 ** Copyright (C) 2016 The Qt Company Ltd.
 ** Contact: https://www.qt.io/licensing/
 **
 ** This file is part of the Qt Virtual Keyboard module of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:GPL$
 ** Commercial License Usage
 ** Licensees holding valid commercial Qt licenses may use this file in
 ** accordance with the commercial license agreement provided with the
 ** Software or, alternatively, in accordance with the terms contained in
 ** a written agreement between you and The Qt Company. For licensing terms
 ** and conditions see https://www.qt.io/terms-conditions. For further
 ** information use the contact form at https://www.qt.io/contact-us.
 **
 ** GNU General Public License Usage
 ** Alternatively, this file may be used under the terms of the GNU
 ** General Public License version 3 or (at your option) any later version
 ** approved by the KDE Free Qt Foundation. The licenses are as published by
 ** the Free Software Foundation and appearing in the file LICENSE.GPL3
 ** included in the packaging of this file. Please review the following
 ** information to ensure the GNU General Public License requirements will
 ** be met: https://www.gnu.org/licenses/gpl-3.0.html.
 **
 ** $QT_END_LICENSE$
 **
 ****************************************************************************/

 #include <QtVirtualKeyboard/private/desktopinputpanel_p.h>
 #include <QtVirtualKeyboard/private/appinputpanel_p_p.h>
 #include <QtVirtualKeyboard/private/inputview_p.h>
 #include <QtVirtualKeyboard/private/platforminputcontext_p.h>
 #include <QtVirtualKeyboard/private/qvirtualkeyboardinputcontext_p.h>
 #include <QtVirtualKeyboard/qvirtualkeyboardinputcontext.h>
 #include <QGuiApplication>
 #include <QQmlEngine>
 #include <QScreen>
 #include <QtVirtualKeyboard/private/virtualkeyboarddebug_p.h>
 #if defined(QT_VIRTUALKEYBOARD_HAVE_XCB)
 #include <xcb/xcb.h>
 #include <xcb/xfixes.h>
 #endif
 #include <qpa/qplatformnativeinterface.h>
 #include <QtCore/private/qobject_p.h>
 #include <QtCore/QLibraryInfo>

 QT_BEGIN_NAMESPACE
 namespace QtVirtualKeyboard {

 class DesktopInputPanelPrivate : public AppInputPanelPrivate
 {
 public:
     enum WindowingSystem {
         Windows,
         Xcb,
         Other,
     };

     DesktopInputPanelPrivate() :
         AppInputPanelPrivate(),
         view(),
         keyboardRect(),
         previewRect(),
         previewVisible(false),
         previewBindingActive(false),
         windowingSystem(Other)
     {
         const QString platformName = QGuiApplication::platformName();
         if (platformName == QLatin1String("windows"))
             windowingSystem = Windows;
         else if (platformName == QLatin1String("xcb"))
             windowingSystem = Xcb;
     }

     QScopedPointer<InputView> view;
     QRectF keyboardRect;
     QRectF previewRect;
     bool previewVisible;
     bool previewBindingActive;
     WindowingSystem windowingSystem;
 };

 /*!
     \class QtVirtualKeyboard::DesktopInputPanel
     \internal
 */

 DesktopInputPanel::DesktopInputPanel(QObject *parent) :
     AppInputPanel(*new DesktopInputPanelPrivate(), parent)
 {
     /*  Activate the alpha buffer for this application.
     */
     QQuickWindow::setDefaultAlphaBuffer(true);
     QScreen *screen = QGuiApplication::primaryScreen();
     connect(screen, SIGNAL(virtualGeometryChanged(QRect)), SLOT(repositionView(QRect)));
 }

 DesktopInputPanel::~DesktopInputPanel()
 {
 }

 void DesktopInputPanel::show()
 {
     AppInputPanel::show();
     Q_D(DesktopInputPanel);
     if (d->view) {
         repositionView(QGuiApplication::primaryScreen()->availableGeometry());
         d->view->show();
     }
 }

 void DesktopInputPanel::hide()
 {
     AppInputPanel::hide();
     Q_D(DesktopInputPanel);
     if (d->view)
         d->view->hide();
 }

 bool DesktopInputPanel::isVisible() const
 {
     return AppInputPanel::isVisible();
 }

 void DesktopInputPanel::setInputRect(const QRect &inputRect)
 {
     Q_D(DesktopInputPanel);
     d->keyboardRect = inputRect;
     updateInputRegion();
 }

 void DesktopInputPanel::createView()
 {
     Q_D(DesktopInputPanel);
     if (!d->view) {
         if (qGuiApp) {
             connect(qGuiApp, SIGNAL(focusWindowChanged(QWindow*)), SLOT(focusWindowChanged(QWindow*)));
             focusWindowChanged(qGuiApp->focusWindow());
         }
         d->view.reset(new InputView());
         d->view->setFlags(Qt::FramelessWindowHint | Qt::WindowStaysOnTopHint | Qt::WindowDoesNotAcceptFocus);
         /*  Set appropriate WindowType for target environment.
             There seems to be no common type which would
             work in all environments. The purpose of this
             flag is to avoid the window from capturing focus,
             as well as hiding it from the task bar. */
         switch (d->windowingSystem) {
         case DesktopInputPanelPrivate::Xcb:
             d->view->setFlags(d->view->flags() | Qt::Window | Qt::BypassWindowManagerHint);
             break;
         default:
             d->view->setFlags(d->view->flags() | Qt::Tool);
             break;
         }
         d->view->setColor(QColor(Qt::transparent));
         d->view->setSource(QUrl(QLatin1String("qrc:///QtQuick/VirtualKeyboard/content/InputPanel.qml")));
         if (QGuiApplication *app = qGuiApp)
             connect(app, SIGNAL(aboutToQuit()), SLOT(destroyView()));
     }
 }

 void DesktopInputPanel::destroyView()
 {
     Q_D(DesktopInputPanel);
     d->view.reset();
     d->previewBindingActive = false;
 }

 void DesktopInputPanel::repositionView(const QRect &rect)
 {
     Q_D(DesktopInputPanel);
     VIRTUALKEYBOARD_DEBUG() << "DesktopInputPanel::repositionView():" << rect;
     if (d->view && d->view->geometry() != rect) {
         QVirtualKeyboardInputContext *inputContext = qobject_cast<PlatformInputContext *>(parent())->inputContext();
         if (inputContext) {
             inputContext->setAnimating(true);
             if (!d->previewBindingActive) {
                 QVirtualKeyboardInputContextPrivate *inputContextPrivate = inputContext->priv();
                 QObject::connect(inputContextPrivate, &QVirtualKeyboardInputContextPrivate::previewRectangleChanged, this, &DesktopInputPanel::previewRectangleChanged);
                 QObject::connect(inputContextPrivate, &QVirtualKeyboardInputContextPrivate::previewVisibleChanged, this, &DesktopInputPanel::previewVisibleChanged);
                 d->previewBindingActive = true;
             }
         }
         d->view->setResizeMode(QQuickView::SizeViewToRootObject);
         setInputRect(QRect());
         d->view->setGeometry(rect);
         d->view->setResizeMode(QQuickView::SizeRootObjectToView);
         if (inputContext)
             inputContext->setAnimating(false);
     }
 }

 void DesktopInputPanel::focusWindowChanged(QWindow *focusWindow)
 {
     disconnect(this, SLOT(focusWindowVisibleChanged(bool)));
     if (focusWindow)
         connect(focusWindow, &QWindow::visibleChanged, this, &DesktopInputPanel::focusWindowVisibleChanged);
 }

 void DesktopInputPanel::focusWindowVisibleChanged(bool visible)
 {
     if (!visible) {
         QVirtualKeyboardInputContext *inputContext = qobject_cast<PlatformInputContext *>(parent())->inputContext();
         if (inputContext)
             inputContext->priv()->hideInputPanel();
     }
 }

 void DesktopInputPanel::previewRectangleChanged()
 {
     Q_D(DesktopInputPanel);
     QVirtualKeyboardInputContext *inputContext = qobject_cast<PlatformInputContext *>(parent())->inputContext();
     d->previewRect = inputContext->priv()->previewRectangle();
     if (d->previewVisible)
         updateInputRegion();
 }

 void DesktopInputPanel::previewVisibleChanged()
 {
     Q_D(DesktopInputPanel);
     QVirtualKeyboardInputContext *inputContext = qobject_cast<PlatformInputContext *>(parent())->inputContext();
     d->previewVisible = inputContext->priv()->previewVisible();
     if (d->view->isVisible())
         updateInputRegion();
 }

 #if defined(QT_VIRTUALKEYBOARD_HAVE_XCB)
 static inline xcb_rectangle_t qRectToXCBRectangle(const QRect &r)
 {
     xcb_rectangle_t result;
     result.x = qMax(SHRT_MIN, r.x());
     result.y = qMax(SHRT_MIN, r.y());
     result.width = qMin((int)USHRT_MAX, r.width());
     result.height = qMin((int)USHRT_MAX, r.height());
     return result;
 }
 #endif

 void DesktopInputPanel::updateInputRegion()
 {
     Q_D(DesktopInputPanel);

     if (d->view.isNull() || d->keyboardRect.isEmpty())
         return;

     // Make sure the native window is created
     if (!d->view->handle())
         d->view->create();

     switch (d->windowingSystem) {
     case DesktopInputPanelPrivate::Xcb:
 #if defined(QT_VIRTUALKEYBOARD_HAVE_XCB)
         {
             QVector<xcb_rectangle_t> rects;
             rects.push_back(qRectToXCBRectangle(d->keyboardRect.toRect()));
             if (d->previewVisible && !d->previewRect.isEmpty())
                 rects.push_back(qRectToXCBRectangle(d->previewRect.toRect()));

             QWindow *window = d->view.data();
             QPlatformNativeInterface *platformNativeInterface = QGuiApplication::platformNativeInterface();
             xcb_connection_t *xbcConnection = static_cast<xcb_connection_t *>(platformNativeInterface->nativeResourceForWindow("connection", window));
             xcb_xfixes_region_t xbcRegion = xcb_generate_id(xbcConnection);
             xcb_xfixes_create_region(xbcConnection, xbcRegion, rects.size(), rects.constData());
             xcb_xfixes_set_window_shape_region(xbcConnection, window->winId(), XCB_SHAPE_SK_INPUT, 0, 0, xbcRegion);
             xcb_xfixes_destroy_region(xbcConnection, xbcRegion);
         }
 #endif
         break;

     default:
         {
             QRegion inputRegion(d->keyboardRect.toRect());
             if (d->previewVisible && !d->previewRect.isEmpty())
                 inputRegion += d->previewRect.toRect();

             d->view->setMask(inputRegion);
             break;
         }
     }
 }

 } // namespace QtVirtualKeyboard
 QT_END_NAMESPACE
	/****************************************************************************
	**
	** Copyright (C) 2016 The Qt Company Ltd.
	** Contact: https://www.qt.io/licensing/
	**
	** This file is part of the Qt Virtual Keyboard module of the Qt Toolkit.
	**
	** $QT_BEGIN_LICENSE:GPL$
	** Commercial License Usage
	** Licensees holding valid commercial Qt licenses may use this file in
	** accordance with the commercial license agreement provided with the
	** Software or, alternatively, in accordance with the terms contained in
	** a written agreement between you and The Qt Company. For licensing terms
	** and conditions see https://www.qt.io/terms-conditions. For further
	** information use the contact form at https://www.qt.io/contact-us.
	**
	** GNU General Public License Usage
	** Alternatively, this file may be used under the terms of the GNU
	** General Public License version 3 or (at your option) any later version
	** approved by the KDE Free Qt Foundation. The licenses are as published by
	** the Free Software Foundation and appearing in the file LICENSE.GPL3
	** included in the packaging of this file. Please review the following
	** information to ensure the GNU General Public License requirements will
	** be met: https://www.gnu.org/licenses/gpl-3.0.html.
	**
	** $QT_END_LICENSE$
	**
	****************************************************************************/

	#include <QtVirtualKeyboard/private/desktopinputpanel_p.h>
	#include <QtVirtualKeyboard/private/appinputpanel_p_p.h>
	#include <QtVirtualKeyboard/private/inputview_p.h>
	#include <QtVirtualKeyboard/private/platforminputcontext_p.h>
	#include <QtVirtualKeyboard/private/qvirtualkeyboardinputcontext_p.h>
	#include <QtVirtualKeyboard/qvirtualkeyboardinputcontext.h>
	#include <QGuiApplication>
	#include <QQmlEngine>
	#include <QScreen>
	#include <QtVirtualKeyboard/private/virtualkeyboarddebug_p.h>
	#if defined(QT_VIRTUALKEYBOARD_HAVE_XCB)
	#include <xcb/xcb.h>
	#include <xcb/xfixes.h>
	#endif
	#include <qpa/qplatformnativeinterface.h>
	#include <QtCore/private/qobject_p.h>
	#include <QtCore/QLibraryInfo>

	QT_BEGIN_NAMESPACE
	namespace QtVirtualKeyboard {

	class DesktopInputPanelPrivate : public AppInputPanelPrivate
	{
	public:
	enum WindowingSystem {
	Windows,
	Xcb,
	Other,
	};

	DesktopInputPanelPrivate() :
	AppInputPanelPrivate(),
	view(),
	keyboardRect(),
	previewRect(),
	previewVisible(false),
	previewBindingActive(false),
	windowingSystem(Other)
	{
	const QString platformName = QGuiApplication::platformName();
	if (platformName == QLatin1String("windows"))
	windowingSystem = Windows;
	else if (platformName == QLatin1String("xcb"))
	windowingSystem = Xcb;
	}

	QScopedPointer<InputView> view;
	QRectF keyboardRect;
	QRectF previewRect;
	bool previewVisible;
	bool previewBindingActive;
	WindowingSystem windowingSystem;
	};

	/*!
	\class QtVirtualKeyboard::DesktopInputPanel
	\internal
	*/

	DesktopInputPanel::DesktopInputPanel(QObject *parent) :
	AppInputPanel(*new DesktopInputPanelPrivate(), parent)
	{
	/* Activate the alpha buffer for this application.
	*/
	QQuickWindow::setDefaultAlphaBuffer(true);
	QScreen *screen = QGuiApplication::primaryScreen();
	connect(screen, SIGNAL(virtualGeometryChanged(QRect)), SLOT(repositionView(QRect)));
	}

	DesktopInputPanel::~DesktopInputPanel()
	{
	}

	void DesktopInputPanel::show()
	{
	AppInputPanel::show();
	Q_D(DesktopInputPanel);
	if (d->view) {
	repositionView(QGuiApplication::primaryScreen()->availableGeometry());
	d->view->show();
	}
	}

	void DesktopInputPanel::hide()
	{
	AppInputPanel::hide();
	Q_D(DesktopInputPanel);
	if (d->view)
	d->view->hide();
	}

	bool DesktopInputPanel::isVisible() const
	{
	return AppInputPanel::isVisible();
	}

	void DesktopInputPanel::setInputRect(const QRect &inputRect)
	{
	Q_D(DesktopInputPanel);
	d->keyboardRect = inputRect;
	updateInputRegion();
	}

	void DesktopInputPanel::createView()
	{
	Q_D(DesktopInputPanel);
	if (!d->view) {
	if (qGuiApp) {
	connect(qGuiApp, SIGNAL(focusWindowChanged(QWindow)), SLOT(focusWindowChanged(QWindow)));
	focusWindowChanged(qGuiApp->focusWindow());
	}
	d->view.reset(new InputView());
	d->view->setFlags(Qt::FramelessWindowHint \| Qt::WindowStaysOnTopHint \| Qt::WindowDoesNotAcceptFocus);
	/* Set appropriate WindowType for target environment.
	There seems to be no common type which would
	work in all environments. The purpose of this
	flag is to avoid the window from capturing focus,
	as well as hiding it from the task bar. */
	switch (d->windowingSystem) {
	case DesktopInputPanelPrivate::Xcb:
	d->view->setFlags(d->view->flags() \| Qt::Window \| Qt::BypassWindowManagerHint);
	break;
	default:
	d->view->setFlags(d->view->flags() \| Qt::Tool);
	break;
	}
	d->view->setColor(QColor(Qt::transparent));
	d->view->setSource(QUrl(QLatin1String("qrc:///QtQuick/VirtualKeyboard/content/InputPanel.qml")));
	if (QGuiApplication *app = qGuiApp)
	connect(app, SIGNAL(aboutToQuit()), SLOT(destroyView()));
	}
	}

	void DesktopInputPanel::destroyView()
	{
	Q_D(DesktopInputPanel);
	d->view.reset();
	d->previewBindingActive = false;
	}

	void DesktopInputPanel::repositionView(const QRect &rect)
	{
	Q_D(DesktopInputPanel);
	VIRTUALKEYBOARD_DEBUG() << "DesktopInputPanel::repositionView():" << rect;
	if (d->view && d->view->geometry() != rect) {
	QVirtualKeyboardInputContext inputContext = qobject_cast<PlatformInputContext >(parent())->inputContext();
	if (inputContext) {
	inputContext->setAnimating(true);
	if (!d->previewBindingActive) {
	QVirtualKeyboardInputContextPrivate *inputContextPrivate = inputContext->priv();
	QObject::connect(inputContextPrivate, &QVirtualKeyboardInputContextPrivate::previewRectangleChanged, this, &DesktopInputPanel::previewRectangleChanged);
	QObject::connect(inputContextPrivate, &QVirtualKeyboardInputContextPrivate::previewVisibleChanged, this, &DesktopInputPanel::previewVisibleChanged);
	d->previewBindingActive = true;
	}
	}
	d->view->setResizeMode(QQuickView::SizeViewToRootObject);
	setInputRect(QRect());
	d->view->setGeometry(rect);
	d->view->setResizeMode(QQuickView::SizeRootObjectToView);
	if (inputContext)
	inputContext->setAnimating(false);
	}
	}

	void DesktopInputPanel::focusWindowChanged(QWindow *focusWindow)
	{
	disconnect(this, SLOT(focusWindowVisibleChanged(bool)));
	if (focusWindow)
	connect(focusWindow, &QWindow::visibleChanged, this, &DesktopInputPanel::focusWindowVisibleChanged);
	}

	void DesktopInputPanel::focusWindowVisibleChanged(bool visible)
	{
	if (!visible) {
	QVirtualKeyboardInputContext inputContext = qobject_cast<PlatformInputContext >(parent())->inputContext();
	if (inputContext)
	inputContext->priv()->hideInputPanel();
	}
	}

	void DesktopInputPanel::previewRectangleChanged()
	{
	Q_D(DesktopInputPanel);
	QVirtualKeyboardInputContext inputContext = qobject_cast<PlatformInputContext >(parent())->inputContext();
	d->previewRect = inputContext->priv()->previewRectangle();
	if (d->previewVisible)
	updateInputRegion();
	}

	void DesktopInputPanel::previewVisibleChanged()
	{
	Q_D(DesktopInputPanel);
	QVirtualKeyboardInputContext inputContext = qobject_cast<PlatformInputContext >(parent())->inputContext();
	d->previewVisible = inputContext->priv()->previewVisible();
	if (d->view->isVisible())
	updateInputRegion();
	}

	#if defined(QT_VIRTUALKEYBOARD_HAVE_XCB)
	static inline xcb_rectangle_t qRectToXCBRectangle(const QRect &r)
	{
	xcb_rectangle_t result;
	result.x = qMax(SHRT_MIN, r.x());
	result.y = qMax(SHRT_MIN, r.y());
	result.width = qMin((int)USHRT_MAX, r.width());
	result.height = qMin((int)USHRT_MAX, r.height());
	return result;
	}
	#endif

	void DesktopInputPanel::updateInputRegion()
	{
	Q_D(DesktopInputPanel);

	if (d->view.isNull() \|\| d->keyboardRect.isEmpty())
	return;

	// Make sure the native window is created
	if (!d->view->handle())
	d->view->create();

	switch (d->windowingSystem) {
	case DesktopInputPanelPrivate::Xcb:
	#if defined(QT_VIRTUALKEYBOARD_HAVE_XCB)
	{
	QVector<xcb_rectangle_t> rects;
	rects.push_back(qRectToXCBRectangle(d->keyboardRect.toRect()));
	if (d->previewVisible && !d->previewRect.isEmpty())
	rects.push_back(qRectToXCBRectangle(d->previewRect.toRect()));

	QWindow *window = d->view.data();
	QPlatformNativeInterface *platformNativeInterface = QGuiApplication::platformNativeInterface();
	xcb_connection_t xbcConnection = static_cast<xcb_connection_t >(platformNativeInterface->nativeResourceForWindow("connection", window));
	xcb_xfixes_region_t xbcRegion = xcb_generate_id(xbcConnection);
	xcb_xfixes_create_region(xbcConnection, xbcRegion, rects.size(), rects.constData());
	xcb_xfixes_set_window_shape_region(xbcConnection, window->winId(), XCB_SHAPE_SK_INPUT, 0, 0, xbcRegion);
	xcb_xfixes_destroy_region(xbcConnection, xbcRegion);
	}
	#endif
	break;

	default:
	{
	QRegion inputRegion(d->keyboardRect.toRect());
	if (d->previewVisible && !d->previewRect.isEmpty())
	inputRegion += d->previewRect.toRect();

	d->view->setMask(inputRegion);
	break;
	}
	}
	}

	} // namespace QtVirtualKeyboard
	QT_END_NAMESPACE