qqnxwindow.cpp

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// Copyright (C) 2011 - 2013 BlackBerry Limited. All rights reserved.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
#undef QT_NO_FOREACH // this file contains unported legacy Q_FOREACH uses
 
#include "qqnxglobal.h"
 
#include "qqnxwindow.h"
#include "qqnxintegration.h"
#include "qqnxscreen.h"
#include "qqnxlgmon.h"
 
#include <QUuid>
 
#include <QtGui/QWindow>
#include <qpa/qwindowsysteminterface.h>
 
#include "private/qguiapplication_p.h"
 
#include <QtCore/QDebug>
 
#include <errno.h>
 
QT_BEGIN_NAMESPACE
 
Q_LOGGING_CATEGORY(lcQpaWindow, "qt.qpa.window");
 
#define DECLARE_DEBUG_VAR(variable) \
    static bool debug_ ## variable() \
    { static bool value = qgetenv("QNX_SCREEN_DEBUG").contains(QT_STRINGIFY(variable)); return value; }
DECLARE_DEBUG_VAR(fps)
DECLARE_DEBUG_VAR(posts)
DECLARE_DEBUG_VAR(blits)
DECLARE_DEBUG_VAR(updates)
DECLARE_DEBUG_VAR(cpu_time)
DECLARE_DEBUG_VAR(gpu_time)
DECLARE_DEBUG_VAR(statistics)
#undef DECLARE_DEBUG_VAR
 
QQnxWindow::QQnxWindow(QWindow *window, screen_context_t context, bool needRootWindow)
    : QPlatformWindow(window),
      m_screenContext(context),
      m_window(0),
      m_screen(0),
      m_parentWindow(0),
      m_visible(false),
      m_exposed(true),
      m_foreign(false),
      m_windowState(Qt::WindowNoState),
      m_firstActivateHandled(false)
{
    qCDebug(lcQpaWindow) << "window =" << window << ", size =" << window->size();
 
    QQnxScreen *platformScreen = static_cast<QQnxScreen *>(window->screen()->handle());
 
    // If a qnxInitialWindowGroup property is set on the window we'll take this as an
    // indication that we want to create a child window and join that window group.
    QVariant windowGroup = window->property("qnxInitialWindowGroup");
    if (!windowGroup.isValid())
        windowGroup = window->property("_q_platform_qnxParentGroup");
 
    if (window->type() == Qt::CoverWindow) {
        // Cover windows have to be top level to be accessible to window delegate (i.e. navigator)
        // Desktop windows also need to be toplevel because they are not
        // supposed to be part of the window hierarchy tree
        m_isTopLevel = true;
    } else if (parent() || windowGroup.isValid()) {
        // If we have a parent we are a child window.  Sometimes we have to be a child even if we
        // don't have a parent e.g. our parent might be in a different process.
        m_isTopLevel = false;
    } else {
        // We're parentless.  If we're not using a root window, we'll always be a top-level window
        // otherwise only the first window is.
        m_isTopLevel = !needRootWindow || !platformScreen->rootWindow();
    }
 
    if (window->type() == Qt::Desktop)  // A desktop widget does not need a libscreen window
        return;
 
    QVariant type = window->property("_q_platform_qnxWindowType");
    if (type.isValid() && type.canConvert<int>()) {
        Q_SCREEN_CHECKERROR(
                screen_create_window_type(&m_window, m_screenContext, type.value<int>()),
                "Could not create window");
    } else if (m_isTopLevel) {
        Q_SCREEN_CRITICALERROR(screen_create_window(&m_window, m_screenContext),
                            "Could not create top level window"); // Creates an application window
        if (window->type() != Qt::CoverWindow) {
            if (needRootWindow)
                platformScreen->setRootWindow(this);
        }
    } else {
        Q_SCREEN_CHECKERROR(
                screen_create_window_type(&m_window, m_screenContext, SCREEN_CHILD_WINDOW),
                "Could not create child window");
    }
 
    createWindowGroup();
 
    // If the window has a qnxWindowId property, set this as the string id property. This generally
    // needs to be done prior to joining any group as it might be used by the owner of the
    // group to identify the window.
    QVariant windowId = window->property("qnxWindowId");
    if (!windowId.isValid())
        windowId = window->property("_q_platform_qnxWindowId");
    if (windowId.isValid() && windowId.canConvert<QByteArray>()) {
        QByteArray id = windowId.toByteArray();
        Q_SCREEN_CHECKERROR(screen_set_window_property_cv(m_window, SCREEN_PROPERTY_ID_STRING,
                            id.size(), id), "Failed to set id");
    }
 
    // If a window group has been provided join it now. If it's an empty string that's OK too,
    // it'll cause us not to join a group (the app will presumably join at some future time).
    if (windowGroup.isValid() && windowGroup.canConvert<QByteArray>())
        joinWindowGroup(windowGroup.toByteArray());
 
    QVariant pipelineValue = window->property("_q_platform_qnxPipeline");
    if (pipelineValue.isValid()) {
        bool ok = false;
        int pipeline = pipelineValue.toInt(&ok);
        if (ok) {
            qCDebug(lcQpaWindow) << "Set pipeline value to" << pipeline;
 
            Q_SCREEN_CHECKERROR(
                screen_set_window_property_iv(m_window, SCREEN_PROPERTY_PIPELINE, &pipeline),
                "Failed to set window pipeline");
        } else {
            qCDebug(lcQpaWindow) << "Invalid pipeline value:" << pipelineValue;
        }
    }
 
    int debug = 0;
    if (Q_UNLIKELY(debug_fps())) {
        debug |= SCREEN_DEBUG_GRAPH_FPS;
    }
    if (Q_UNLIKELY(debug_posts())) {
        debug |= SCREEN_DEBUG_GRAPH_POSTS;
    }
    if (Q_UNLIKELY(debug_blits())) {
        debug |= SCREEN_DEBUG_GRAPH_BLITS;
    }
    if (Q_UNLIKELY(debug_updates())) {
        debug |= SCREEN_DEBUG_GRAPH_UPDATES;
    }
    if (Q_UNLIKELY(debug_cpu_time())) {
        debug |= SCREEN_DEBUG_GRAPH_CPU_TIME;
    }
    if (Q_UNLIKELY(debug_gpu_time())) {
        debug |= SCREEN_DEBUG_GRAPH_GPU_TIME;
    }
    if (Q_UNLIKELY(debug_statistics())) {
        debug = SCREEN_DEBUG_STATISTICS;
    }
 
    if (debug > 0) {
        Q_SCREEN_CHECKERROR(screen_set_window_property_iv(nativeHandle(), SCREEN_PROPERTY_DEBUG, &debug),
                            "Could not set SCREEN_PROPERTY_DEBUG");
        qCDebug(lcQpaWindow) << "window SCREEN_PROPERTY_DEBUG= " << debug;
    }
}
 
QQnxWindow::QQnxWindow(QWindow *window, screen_context_t context, screen_window_t screenWindow)
    : QPlatformWindow(window)
    , m_screenContext(context)
    , m_window(screenWindow)
    , m_screen(0)
    , m_parentWindow(0)
    , m_visible(false)
    , m_exposed(true)
    , m_foreign(true)
    , m_windowState(Qt::WindowNoState)
    , m_parentGroupName(256, 0)
    , m_isTopLevel(false)
{
    qCDebug(lcQpaWindow) << "window =" << window << ", size =" << window->size();
 
    collectWindowGroup();
 
    screen_get_window_property_cv(m_window,
                                  SCREEN_PROPERTY_PARENT,
                                  m_parentGroupName.size(),
                                  m_parentGroupName.data());
    m_parentGroupName.resize(strlen(m_parentGroupName.constData()));
 
    // If a window group has been provided join it now. If it's an empty string that's OK too,
    // it'll cause us not to join a group (the app will presumably join at some future time).
    QVariant parentGroup = window->property("qnxInitialWindowGroup");
    if (!parentGroup.isValid())
        parentGroup = window->property("_q_platform_qnxParentGroup");
    if (parentGroup.isValid() && parentGroup.canConvert<QByteArray>())
        joinWindowGroup(parentGroup.toByteArray());
}
 
QQnxWindow::~QQnxWindow()
{
    qCDebug(lcQpaWindow) << "window =" << window();
 
    // Qt should have already deleted the children before deleting the parent.
    Q_ASSERT(m_childWindows.size() == 0);
 
    // Remove from plugin's window mapper
    QQnxIntegration::instance()->removeWindow(m_window);
 
    // Remove from parent's Hierarchy.
    removeFromParent();
    if (m_screen)
        m_screen->updateHierarchy();
 
    // Cleanup QNX window and its buffers
    // Foreign windows are cleaned up externally after the CLOSE event has been handled.
    if (m_foreign)
        removeContextPermission();
    else
        screen_destroy_window(m_window);
}
 
void QQnxWindow::setGeometry(const QRect &rect)
{
    QRect newGeometry = rect;
    if (shouldMakeFullScreen())
        newGeometry = screen()->geometry();
 
    if (window()->type() != Qt::Desktop)
        setGeometryHelper(newGeometry);
 
    if (isExposed())
        QWindowSystemInterface::handleExposeEvent(window(), QRect(QPoint(0, 0), newGeometry.size()));
}
 
void QQnxWindow::setGeometryHelper(const QRect &rect)
{
    qCDebug(lcQpaWindow) << "window =" << window()
                         << ", (" << rect.x() << "," << rect.y()
                         << "," << rect.width() << "," << rect.height() << ")";
 
    // Call base class method
    QPlatformWindow::setGeometry(rect);
 
    // Set window geometry equal to widget geometry
    int val[2];
    val[0] = rect.x();
    val[1] = rect.y();
    Q_SCREEN_CHECKERROR(screen_set_window_property_iv(m_window, SCREEN_PROPERTY_POSITION, val),
                        "Failed to set window position");
 
    val[0] = rect.width();
    val[1] = rect.height();
    Q_SCREEN_CHECKERROR(screen_set_window_property_iv(m_window, SCREEN_PROPERTY_SIZE, val),
                        "Failed to set window size");
 
    // Set viewport size equal to window size
    Q_SCREEN_CHECKERROR(screen_set_window_property_iv(m_window, SCREEN_PROPERTY_SOURCE_SIZE, val),
                        "Failed to set window source size");
 
    screen_flush_context(m_screenContext, 0);
 
    QWindowSystemInterface::handleGeometryChange(window(), rect);
}
 
void QQnxWindow::setVisible(bool visible)
{
    qCDebug(lcQpaWindow) << "window =" << window() << "visible =" << visible;
 
    if (m_visible == visible || window()->type() == Qt::Desktop)
        return;
 
    // The first time through we join a window group if appropriate.
    if (m_parentGroupName.isNull() && !m_isTopLevel) {
        joinWindowGroup(parent() ? static_cast<QQnxWindow*>(parent())->groupName()
                                 : QByteArray(m_screen->windowGroupName()));
    }
 
    m_visible = visible;
 
    QQnxWindow *root = this;
    while (root->m_parentWindow)
        root = root->m_parentWindow;
 
    root->updateVisibility(root->m_visible);
 
    QWindowSystemInterface::handleExposeEvent(window(), QRect(QPoint(0, 0), window()->geometry().size()));
 
    if (visible) {
        applyWindowState();
    } else {
        if (showWithoutActivating() && focusable() && m_firstActivateHandled) {
            m_firstActivateHandled = false;
            int val = SCREEN_SENSITIVITY_NO_FOCUS;
            Q_SCREEN_CHECKERROR(
                screen_set_window_property_iv(m_window, SCREEN_PROPERTY_SENSITIVITY, &val),
                "Failed to set window sensitivity");
        }
 
        // Flush the context, otherwise it won't disappear immediately
        screen_flush_context(m_screenContext, 0);
    }
}
 
void QQnxWindow::updateVisibility(bool parentVisible)
{
    qCDebug(lcQpaWindow) << "parentVisible =" << parentVisible << "window =" << window();
    // Set window visibility
    int val = (m_visible && parentVisible) ? 1 : 0;
    Q_SCREEN_CHECKERROR(screen_set_window_property_iv(m_window, SCREEN_PROPERTY_VISIBLE, &val),
                        "Failed to set window visibility");
 
    Q_FOREACH (QQnxWindow *childWindow, m_childWindows)
        childWindow->updateVisibility(m_visible && parentVisible);
}
 
void QQnxWindow::setOpacity(qreal level)
{
    qCDebug(lcQpaWindow) << "window =" << window() << "opacity =" << level;
    // Set window global alpha
    int val = (int)(level * 255);
    Q_SCREEN_CHECKERROR(screen_set_window_property_iv(m_window, SCREEN_PROPERTY_GLOBAL_ALPHA, &val),
                        "Failed to set global alpha");
 
    screen_flush_context(m_screenContext, 0);
}
 
void QQnxWindow::setExposed(bool exposed)
{
    qCDebug(lcQpaWindow) << "window =" << window() << "expose =" << exposed;
 
    if (m_exposed != exposed) {
        m_exposed = exposed;
        QWindowSystemInterface::handleExposeEvent(window(), QRect(QPoint(0, 0), window()->geometry().size()));
    }
}
 
bool QQnxWindow::isExposed() const
{
    return m_visible && m_exposed;
}
 
void QQnxWindow::setBufferSize(const QSize &size)
{
    qCDebug(lcQpaWindow) << "window =" << window() << "size =" << size;
 
    // libscreen fails when creating empty buffers
    const QSize nonEmptySize = size.isEmpty() ? QSize(1, 1) : size;
    int format = pixelFormat();
 
    if (nonEmptySize == m_bufferSize || format == -1)
        return;
 
    Q_SCREEN_CRITICALERROR(
            screen_set_window_property_iv(m_window, SCREEN_PROPERTY_FORMAT, &format),
            "Failed to set window format");
 
    if (m_bufferSize.isValid()) {
        // destroy buffers first, if resized
        Q_SCREEN_CRITICALERROR(screen_destroy_window_buffers(m_window),
                               "Failed to destroy window buffers");
    }
 
    int val[2] = { nonEmptySize.width(), nonEmptySize.height() };
    Q_SCREEN_CHECKERROR(screen_set_window_property_iv(m_window, SCREEN_PROPERTY_BUFFER_SIZE, val),
                        "Failed to set window buffer size");
 
    Q_SCREEN_CRITICALERROR(screen_create_window_buffers(m_window, MAX_BUFFER_COUNT),
                           "Failed to create window buffers");
 
    // check if there are any buffers available
    int bufferCount = 0;
    Q_SCREEN_CRITICALERROR(
        screen_get_window_property_iv(m_window, SCREEN_PROPERTY_RENDER_BUFFER_COUNT, &bufferCount),
        "Failed to query render buffer count");
 
    if (Q_UNLIKELY(bufferCount != MAX_BUFFER_COUNT)) {
        qFatal("QQnxWindow: invalid buffer count. Expected = %d, got = %d.",
                MAX_BUFFER_COUNT, bufferCount);
    }
 
    // Set the transparency. According to QNX technical support, setting the window
    // transparency property should always be done *after* creating the window
    // buffers in order to guarantee the property is paid attention to.
    if (size.isEmpty()) {
        // We can't create 0x0 buffers and instead make them 1x1.  But to allow these windows to
        // still be 'visible' (thus allowing their children to be visible), we need to allow
        // them to be posted but still not show up.
        val[0] = SCREEN_TRANSPARENCY_DISCARD;
    } else if (window()->requestedFormat().alphaBufferSize() == 0) {
        // To avoid overhead in the composition manager, disable blending
        // when the underlying window buffer doesn't have an alpha channel.
        val[0] = SCREEN_TRANSPARENCY_NONE;
    } else {
        // Normal alpha blending. This doesn't commit us to translucency; the
        // normal backfill during the painting will contain a fully opaque
        // alpha channel unless the user explicitly intervenes to make something
        // transparent.
        val[0] = SCREEN_TRANSPARENCY_SOURCE_OVER;
    }
 
    Q_SCREEN_CHECKERROR(screen_set_window_property_iv(m_window, SCREEN_PROPERTY_TRANSPARENCY, val),
                        "Failed to set window transparency");
 
    // Cache new buffer size
    m_bufferSize = nonEmptySize;
    resetBuffers();
}
 
void QQnxWindow::setScreen(QQnxScreen *platformScreen)
{
    qCDebug(lcQpaWindow) << "window =" << window() << "platformScreen =" << platformScreen;
 
    if (platformScreen == 0) { // The screen has been destroyed
        m_screen = 0;
        Q_FOREACH (QQnxWindow *childWindow, m_childWindows) {
            childWindow->setScreen(0);
        }
        return;
    }
 
    if (m_screen == platformScreen)
        return;
 
    if (m_screen) {
        qCDebug(lcQpaWindow) << "Moving window to different screen";
        m_screen->removeWindow(this);
 
        if ((QQnxIntegration::instance()->options() & QQnxIntegration::RootWindow)) {
            screen_leave_window_group(m_window);
        }
    }
 
    m_screen = platformScreen;
    if (!m_parentWindow) {
        platformScreen->addWindow(this);
    }
    if (m_isTopLevel) {
        // Move window to proper screen/display
        screen_display_t display = platformScreen->nativeDisplay();
        Q_SCREEN_CHECKERROR(
               screen_set_window_property_pv(m_window, SCREEN_PROPERTY_DISPLAY, (void **)&display),
               "Failed to set window display");
    } else {
        Q_FOREACH (QQnxWindow *childWindow, m_childWindows) {
            // Only subwindows and tooltips need necessarily be moved to another display with the window.
            if (window()->type() == Qt::SubWindow || window()->type() == Qt::ToolTip)
                childWindow->setScreen(platformScreen);
        }
    }
 
    m_screen->updateHierarchy();
}
 
void QQnxWindow::removeFromParent()
{
    qCDebug(lcQpaWindow) << Q_FUNC_INFO << "window =" << window();
    // Remove from old Hierarchy position
    if (m_parentWindow) {
        if (Q_UNLIKELY(!m_parentWindow->m_childWindows.removeAll(this)))
            qFatal("QQnxWindow: Window Hierarchy broken; window has parent, but parent hasn't got child.");
        else
            m_parentWindow = nullptr;
    } else if (m_screen) {
        m_screen->removeWindow(this);
    }
}
 
void QQnxWindow::setParent(const QPlatformWindow *window)
{
    qCDebug(lcQpaWindow) << "window =" << this->window() << "platformWindow =" << window;
    // Cast away the const, we need to modify the hierarchy.
    QQnxWindow* const newParent = static_cast<QQnxWindow*>(const_cast<QPlatformWindow*>(window));
 
    if (newParent == m_parentWindow)
        return;
 
    if (static_cast<QQnxScreen *>(screen())->rootWindow() == this) {
        qWarning("Application window cannot be reparented");
        return;
    }
 
    removeFromParent();
    m_parentWindow = newParent;
 
    // Add to new hierarchy position.
    if (m_parentWindow) {
        if (m_parentWindow->m_screen != m_screen)
            setScreen(m_parentWindow->m_screen);
 
        m_parentWindow->m_childWindows.push_back(this);
        joinWindowGroup(m_parentWindow->groupName());
    } else {
        m_screen->addWindow(this);
        joinWindowGroup(QByteArray());
    }
 
    m_screen->updateHierarchy();
}
 
void QQnxWindow::raise()
{
    qCDebug(lcQpaWindow) << Q_FUNC_INFO << "window =" << window();
 
    if (m_parentWindow) {
        m_parentWindow->m_childWindows.removeAll(this);
        m_parentWindow->m_childWindows.push_back(this);
    } else {
        m_screen->raiseWindow(this);
    }
 
    m_screen->updateHierarchy();
}
 
void QQnxWindow::lower()
{
    qCDebug(lcQpaWindow) << Q_FUNC_INFO << "window =" << window();
 
    if (m_parentWindow) {
        m_parentWindow->m_childWindows.removeAll(this);
        m_parentWindow->m_childWindows.push_front(this);
    } else {
        m_screen->lowerWindow(this);
    }
 
    m_screen->updateHierarchy();
}
 
void QQnxWindow::requestActivateWindow()
{
    QQnxWindow *focusWindow = nullptr;
    if (QGuiApplication::focusWindow())
        focusWindow = static_cast<QQnxWindow*>(QGuiApplication::focusWindow()->handle());
 
    if (focusWindow == this)
        return;
 
    if (static_cast<QQnxScreen *>(screen())->rootWindow() == this ||
            (focusWindow && findWindow(focusWindow->nativeHandle()))) {
        // If the focus window is a child, we can just set the focus of our own window
        // group to our window handle
        setFocus(nativeHandle());
    } else {
        // In order to receive focus the parent's window group has to give focus to the
        // child. If we have several hierarchy layers, we have to do that several times
        QQnxWindow *currentWindow = this;
        QList<QQnxWindow*> windowList;
        while (currentWindow) {
            auto platformScreen = static_cast<QQnxScreen *>(screen());
            windowList.prepend(currentWindow);
            // If we find the focus window, we don't have to go further
            if (currentWindow == focusWindow)
                break;
 
            if (currentWindow->parent()){
                currentWindow = static_cast<QQnxWindow*>(currentWindow->parent());
            } else if (platformScreen->rootWindow() &&
                  platformScreen->rootWindow()->m_windowGroupName == currentWindow->m_parentGroupName) {
                currentWindow = platformScreen->rootWindow();
            } else {
                currentWindow = nullptr;
            }
        }
 
        // We have to apply the focus from parent to child windows
        for (int i = 1; i < windowList.size(); ++i)
            windowList.at(i-1)->setFocus(windowList.at(i)->nativeHandle());
 
        windowList.last()->setFocus(windowList.constLast()->nativeHandle());
    }
 
    screen_flush_context(m_screenContext, 0);
}
 
void QQnxWindow::setFocus(screen_window_t newFocusWindow)
{
    screen_window_t temporaryFocusWindow = nullptr;
 
    screen_group_t screenGroup = 0;
    Q_SCREEN_CHECKERROR(screen_get_window_property_pv(nativeHandle(), SCREEN_PROPERTY_GROUP,
                                                      reinterpret_cast<void **>(&screenGroup)),
                        "Failed to retrieve window group");
 
    if (showWithoutActivating() && focusable() && !m_firstActivateHandled) {
        m_firstActivateHandled = true;
        int val = SCREEN_SENSITIVITY_TEST;
        Q_SCREEN_CHECKERROR(
            screen_set_window_property_iv(m_window, SCREEN_PROPERTY_SENSITIVITY, &val),
            "Failed to set window sensitivity");
 
#if _SCREEN_VERSION < _SCREEN_MAKE_VERSION(1, 0, 0)
        // For older versions of screen, the window may still have group
        // focus even though it was marked NO_FOCUS when it was hidden.
        // In that situation, focus has to be given to another window
        // so that this window can take focus back from it.
        screen_window_t oldFocusWindow = nullptr;
        Q_SCREEN_CHECKERROR(
            screen_get_group_property_pv(screenGroup, SCREEN_PROPERTY_FOCUS,
                                         reinterpret_cast<void **>(&oldFocusWindow)),
            "Failed to retrieve group focus");
        if (newFocusWindow == oldFocusWindow) {
            char groupName[256];
            memset(groupName, 0, sizeof(groupName));
            Q_SCREEN_CHECKERROR(screen_get_group_property_cv(screenGroup, SCREEN_PROPERTY_NAME,
                                                             sizeof(groupName) - 1, groupName),
                                "Failed to retrieve group name");
 
            Q_SCREEN_CHECKERROR(screen_create_window_type(&temporaryFocusWindow,
                                                          m_screenContext, SCREEN_CHILD_WINDOW),
                                "Failed to create temporary focus window");
            Q_SCREEN_CHECKERROR(screen_join_window_group(temporaryFocusWindow, groupName),
                                "Temporary focus window failed to join window group");
            Q_SCREEN_CHECKERROR(
                screen_set_group_property_pv(screenGroup, SCREEN_PROPERTY_FOCUS,
                                             reinterpret_cast<void **>(&temporaryFocusWindow)),
                "Temporary focus window failed to take focus");
            screen_flush_context(m_screenContext, 0);
        }
#endif
    }
 
    Q_SCREEN_CHECKERROR(screen_set_group_property_pv(screenGroup, SCREEN_PROPERTY_FOCUS,
                                                     reinterpret_cast<void **>(&newFocusWindow)),
                        "Failed to set group focus");
 
    screen_destroy_window(temporaryFocusWindow);
}
 
void QQnxWindow::setWindowState(Qt::WindowStates state)
{
    qCDebug(lcQpaWindow) << Q_FUNC_INFO << "state =" << state;
 
    // Prevent two calls with Qt::WindowFullScreen from changing m_unmaximizedGeometry
    if (m_windowState == state)
        return;
 
    m_windowState = state;
 
    if (m_visible)
        applyWindowState();
}
 
void QQnxWindow::propagateSizeHints()
{
    // nothing to do; silence base class warning
    // qWindowDebug("ignored");
}
 
QPlatformScreen *QQnxWindow::screen() const
{
    return m_screen;
}
 
QQnxWindow *QQnxWindow::findWindow(screen_window_t windowHandle)
{
    if (m_window == windowHandle)
        return this;
 
    Q_FOREACH (QQnxWindow *window, m_childWindows) {
        QQnxWindow * const result = window->findWindow(windowHandle);
        if (result)
            return result;
    }
 
    return 0;
}
 
void QQnxWindow::minimize()
{
    qWarning("Qt::WindowMinimized is not supported by this OS version");
}
 
void QQnxWindow::setRotation(int rotation)
{
    qCDebug(lcQpaWindow) << Q_FUNC_INFO << "angle =" << rotation;
    Q_SCREEN_CHECKERROR(
            screen_set_window_property_iv(m_window, SCREEN_PROPERTY_ROTATION, &rotation),
            "Failed to set window rotation");
}
 
void QQnxWindow::initWindow()
{
    if (window()->type() == Qt::Desktop)
        return;
 
    // Alpha channel is always pre-multiplied if present
    int val = SCREEN_PRE_MULTIPLIED_ALPHA;
    Q_SCREEN_CHECKERROR(screen_set_window_property_iv(m_window, SCREEN_PROPERTY_ALPHA_MODE, &val),
                        "Failed to set alpha mode");
 
    // Set the window swap interval
    val = 1;
    Q_SCREEN_CHECKERROR(
            screen_set_window_property_iv(m_window, SCREEN_PROPERTY_SWAP_INTERVAL, &val),
            "Failed to set swap interval");
 
    if (showWithoutActivating() || !focusable()) {
        // NO_FOCUS is temporary for showWithoutActivating (and pop-up) windows.
        // Using NO_FOCUS ensures that screen doesn't activate the window because
        // it was just created.  Sensitivity will be changed to TEST when the
        // window is clicked or touched.
        val = SCREEN_SENSITIVITY_NO_FOCUS;
        Q_SCREEN_CHECKERROR(
                screen_set_window_property_iv(m_window, SCREEN_PROPERTY_SENSITIVITY, &val),
                "Failed to set window sensitivity");
    }
 
    QQnxScreen *platformScreen = static_cast<QQnxScreen *>(window()->screen()->handle());
    setScreen(platformScreen);
 
    if (window()->type() == Qt::CoverWindow)
        m_exposed = false;
 
    // Add window to plugin's window mapper
    QQnxIntegration::instance()->addWindow(m_window, window());
 
    // Qt never calls these setters after creating the window, so we need to do that ourselves here
    setWindowState(window()->windowState());
    setOpacity(window()->opacity());
 
    if (window()->parent() && window()->parent()->handle())
        setParent(window()->parent()->handle());
 
    setGeometryHelper(shouldMakeFullScreen() ? screen()->geometry() : window()->geometry());
}
 
void QQnxWindow::collectWindowGroup()
{
    QByteArray groupName(256, 0);
    Q_SCREEN_CHECKERROR(screen_get_window_property_cv(m_window,
                                                      SCREEN_PROPERTY_GROUP,
                                                      groupName.size(),
                                                      groupName.data()),
                        "Failed to retrieve window group");
    groupName.resize(strlen(groupName.constData()));
    m_windowGroupName = groupName;
}
 
void QQnxWindow::createWindowGroup()
{
    Q_SCREEN_CHECKERROR(screen_create_window_group(m_window, nullptr),
                        "Failed to create window group");
 
    collectWindowGroup();
}
 
void QQnxWindow::joinWindowGroup(const QByteArray &groupName)
{
    bool changed = false;
 
    qCDebug(lcQpaWindow) << Q_FUNC_INFO << "group:" << groupName;
 
    // screen has this annoying habit of generating a CLOSE/CREATE when the owner context of
    // the parent group moves a foreign window to another group that it also owns.  The
    // CLOSE/CREATE changes the identity of the foreign window.  Usually, this is undesirable.
    // To prevent this CLOSE/CREATE when changing the parent group, we temporarily add a
    // context permission for the Qt context.  screen won't send a CLOSE/CREATE when the
    // context has some permission other than the PARENT permission.  If there isn't a new
    // group (the window has no parent), this context permission is left in place.
 
    if (m_foreign && !m_parentGroupName.isEmpty())\
        addContextPermission();
 
    if (!groupName.isEmpty()) {
        if (groupName != m_parentGroupName) {
            screen_join_window_group(m_window, groupName);
            m_parentGroupName = groupName;
            changed = true;
        }
    } else {
        if (!m_parentGroupName.isEmpty()) {
            screen_leave_window_group(m_window);
            changed = true;
        }
        // By setting to an empty string we'll stop setVisible from trying to
        // change our group, we want that to happen only if joinWindowGroup has
        // never been called.  This allows windows to be created that are not initially
        // part of any group.
        m_parentGroupName = "";
    }
 
    if (m_foreign && !groupName.isEmpty())
        removeContextPermission();
 
    if (changed)
        screen_flush_context(m_screenContext, 0);
}
 
void QQnxWindow::updateZorder(int &topZorder)
{
    updateZorder(m_window, topZorder);
 
    Q_FOREACH (QQnxWindow *childWindow, m_childWindows)
        childWindow->updateZorder(topZorder);
}
 
void QQnxWindow::updateZorder(screen_window_t window, int &topZorder)
{
    Q_SCREEN_CHECKERROR(screen_set_window_property_iv(window, SCREEN_PROPERTY_ZORDER, &topZorder),
                        "Failed to set window z-order");
    topZorder++;
}
 
void QQnxWindow::applyWindowState()
{
    if (m_windowState & Qt::WindowMinimized) {
        minimize();
 
        if (m_unmaximizedGeometry.isValid())
            setGeometry(m_unmaximizedGeometry);
        else
            setGeometry(m_screen->geometry());
    } else if (m_windowState & (Qt::WindowMaximized | Qt::WindowFullScreen)) {
        m_unmaximizedGeometry = geometry();
        setGeometry(m_windowState & Qt::WindowFullScreen ? m_screen->geometry()
                                                         : m_screen->availableGeometry());
    } else if (m_unmaximizedGeometry.isValid()) {
        setGeometry(m_unmaximizedGeometry);
    }
}
 
void QQnxWindow::windowPosted()
{
    if (m_cover) {
        m_cover->updateCover();
        qqnxLgmonFramePosted(true);  // for performance measurements
    } else {
        qqnxLgmonFramePosted(false);  // for performance measurements
    }
}
 
bool QQnxWindow::shouldMakeFullScreen() const
{
    return ((static_cast<QQnxScreen *>(screen())->rootWindow() == this)
            && (QQnxIntegration::instance()->options() & QQnxIntegration::FullScreenApplication));
}
 
 
void QQnxWindow::handleActivationEvent()
{
    if (showWithoutActivating() && focusable() && !m_firstActivateHandled)
        requestActivateWindow();
}
 
bool QQnxWindow::showWithoutActivating() const
{
    return (window()->flags() & Qt::Popup) == Qt::Popup
        || window()->property("_q_showWithoutActivating").toBool();
}
 
bool QQnxWindow::focusable() const
{
    return (window()->flags() & Qt::WindowDoesNotAcceptFocus) != Qt::WindowDoesNotAcceptFocus;
}
 
void QQnxWindow::addContextPermission()
{
    QByteArray grantString("context:");
    grantString.append(QQnxIntegration::instance()->screenContextId());
    grantString.append(":rw-");
    screen_set_window_property_cv(m_window,
            SCREEN_PROPERTY_PERMISSIONS,
            grantString.length(),
            grantString.data());
}
 
void QQnxWindow::removeContextPermission()
{
    QByteArray revokeString("context:");
    revokeString.append(QQnxIntegration::instance()->screenContextId());
    revokeString.append(":---");
    screen_set_window_property_cv(m_window,
            SCREEN_PROPERTY_PERMISSIONS,
            revokeString.length(),
            revokeString.data());
}
 
QT_END_NAMESPACE