qhaikurasterwindow.cpp

Enable keyboard shortcuts

// Copyright (C) 2015 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com, author Tobias Koenig <tobias.koenig@kdab.com>

// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only

#include "qhaikurasterwindow.h"

#include "qhaikukeymapper.h"

#include <View.h>

#include <Window.h>

#include <qpa/qwindowsysteminterface.h>

QT_BEGIN_NAMESPACE

Q_DECLARE_METATYPE(QEvent::Type)

Q_DECLARE_METATYPE(Qt::MouseButtons)

Q_DECLARE_METATYPE(Qt::MouseEventSource)

Q_DECLARE_METATYPE(Qt::KeyboardModifiers)

Q_DECLARE_METATYPE(Qt::Orientation)

HaikuViewProxy::HaikuViewProxy(BWindow *window, QObject *parent)

    : QObject(parent)

    , BView(BRect(0, 0, window->Bounds().right, window->Bounds().bottom), 0, B_FOLLOW_ALL_SIDES, B_WILL_DRAW | B_FRAME_EVENTS)

void HaikuViewProxy::MessageReceived(BMessage *message)

    switch (message->what) {

    case B_MOUSE_WHEEL_CHANGED:

             float deltaX = 0;

             if (message->FindFloat("be:wheel_delta_x", &deltaX) != B_OK)

                 deltaX = 0;

             float deltaY = 0;

             if (message->FindFloat("be:wheel_delta_y", &deltaY) != B_OK)

                 deltaY = 0;

             if (deltaX != 0 || deltaY != 0) {

                BPoint localPos;

                uint32 keyState = 0;

                GetMouse(&localPos, &keyState);

                const Qt::KeyboardModifiers keyboardModifiers = keyStateToModifiers(modifiers());

                const BPoint globalPos = ConvertToScreen(localPos);

                const QPoint globalPosition = QPoint(globalPos.x, globalPos.y);

                const QPoint localPosition = QPoint(localPos.x, localPos.y);

                if (deltaX != 0)

                    Q_EMIT wheelEvent(localPosition, globalPosition, (deltaX * -120), Qt::Horizontal, keyboardModifiers);

                if (deltaY != 0)

                    Q_EMIT wheelEvent(localPosition, globalPosition, (deltaY * -120), Qt::Vertical, keyboardModifiers);

             break;

    default:

        BView::MessageReceived(message);

        break;

void HaikuViewProxy::Draw(BRect updateRect)

    BView::Draw(updateRect);

    Q_EMIT drawRequest(QRect(updateRect.left, updateRect.top, updateRect.Width(), updateRect.Height()));

void HaikuViewProxy::MouseDown(BPoint localPos)

    BPoint dummyPos;

    uint32 keyState = 0;

    GetMouse(&dummyPos, &keyState);

    const Qt::MouseButtons mouseButtons = keyStateToMouseButtons(keyState);

    const Qt::KeyboardModifiers keyboardModifiers = keyStateToModifiers(modifiers());

    const Qt::MouseEventSource source = Qt::MouseEventNotSynthesized;

    const BPoint globalPos = ConvertToScreen(localPos);

    const QPoint globalPosition = QPoint(globalPos.x, globalPos.y);

    const QPoint localPosition = QPoint(localPos.x, localPos.y);

    Q_EMIT mouseEvent(localPosition, globalPosition, mouseButtons, keyboardModifiers, source);

void HaikuViewProxy::MouseUp(BPoint localPos)

    BPoint dummyPos;

    uint32 keyState = 0;

    GetMouse(&dummyPos, &keyState);

    const Qt::MouseButtons mouseButtons = keyStateToMouseButtons(keyState);

    const Qt::KeyboardModifiers keyboardModifiers = keyStateToModifiers(modifiers());

    const Qt::MouseEventSource source = Qt::MouseEventNotSynthesized;

    const BPoint globalPos = ConvertToScreen(localPos);

    const QPoint globalPosition = QPoint(globalPos.x, globalPos.y);

    const QPoint localPosition = QPoint(localPos.x, localPos.y);

    Q_EMIT mouseEvent(localPosition, globalPosition, mouseButtons, keyboardModifiers, source);

void HaikuViewProxy::MouseMoved(BPoint pos, uint32 code, const BMessage *dragMessage)

    switch (code) {

    case B_INSIDE_VIEW:

            BPoint dummyPos;

            uint32 keyState = 0;

            GetMouse(&dummyPos, &keyState);

            const Qt::MouseButtons mouseButtons = keyStateToMouseButtons(keyState);

            const Qt::KeyboardModifiers keyboardModifiers = keyStateToModifiers(modifiers());

            const Qt::MouseEventSource source = Qt::MouseEventNotSynthesized;

            const BPoint globalPos = ConvertToScreen(pos);

            const QPoint globalPosition = QPoint(globalPos.x, globalPos.y);

            const QPoint localPosition = QPoint(pos.x, pos.y);

            Q_EMIT mouseEvent(localPosition, globalPosition, mouseButtons, keyboardModifiers, source);

        break;

    case B_ENTERED_VIEW:

        Q_EMIT enteredView();

        break;

    case B_EXITED_VIEW:

        Q_EMIT exitedView();

        break;

    BView::MouseMoved(pos, code, dragMessage);

void HaikuViewProxy::KeyDown(const char*, int32)

    handleKeyEvent(QEvent::KeyPress, Window()->CurrentMessage());

void HaikuViewProxy::KeyUp(const char*, int32)

    handleKeyEvent(QEvent::KeyRelease, Window()->CurrentMessage());

Qt::MouseButtons HaikuViewProxy::keyStateToMouseButtons(uint32 keyState) const

    Qt::MouseButtons mouseButtons(Qt::NoButton);

    if (keyState & B_PRIMARY_MOUSE_BUTTON)

        mouseButtons |= Qt::LeftButton;

    if (keyState & B_SECONDARY_MOUSE_BUTTON)

        mouseButtons |= Qt::RightButton;

    if (keyState & B_TERTIARY_MOUSE_BUTTON)

        mouseButtons |= Qt::MiddleButton;

    return mouseButtons;

Qt::KeyboardModifiers HaikuViewProxy::keyStateToModifiers(uint32 keyState) const

    Qt::KeyboardModifiers modifiers(Qt::NoModifier);

    if (keyState & B_SHIFT_KEY)

        modifiers |= Qt::ShiftModifier;

    if (keyState & B_CONTROL_KEY)

        modifiers |= Qt::AltModifier;

    if (keyState & B_COMMAND_KEY)

        modifiers |= Qt::ControlModifier;

    return modifiers;

void HaikuViewProxy::handleKeyEvent(QEvent::Type type, BMessage *message)

    int32 key = 0;

    uint32 code = 0;

    const char *bytes = nullptr;

    QString text;

    if (message) {

        if (message->FindString("bytes", &bytes) == B_OK) {

            text = QString::fromLocal8Bit(bytes, strlen(bytes));

        if (message->FindInt32("key", &key) == B_OK) {

            code = QHaikuKeyMapper::translateKeyCode(key, (modifiers() & B_NUM_LOCK));

    const Qt::KeyboardModifiers keyboardModifiers = keyStateToModifiers(modifiers());

    Q_EMIT keyEvent(type, code, keyboardModifiers, text);

QHaikuRasterWindow::QHaikuRasterWindow(QWindow *window)

    : QHaikuWindow(window)

    qRegisterMetaType<QEvent::Type>();

    qRegisterMetaType<Qt::MouseButtons>();

    qRegisterMetaType<Qt::MouseEventSource>();

    qRegisterMetaType<Qt::KeyboardModifiers>();

    qRegisterMetaType<Qt::Orientation>();

    HaikuViewProxy *haikuView = new HaikuViewProxy(m_window);

    connect(haikuView, SIGNAL(mouseEvent(QPoint,QPoint,Qt::MouseButtons,Qt::KeyboardModifiers,Qt::MouseEventSource)),

            this, SLOT(haikuMouseEvent(QPoint,QPoint,Qt::MouseButtons,Qt::KeyboardModifiers,Qt::MouseEventSource)));

    connect(haikuView, SIGNAL(wheelEvent(QPoint,QPoint,int,Qt::Orientation,Qt::KeyboardModifiers)),

            this, SLOT(haikuWheelEvent(QPoint,QPoint,int,Qt::Orientation,Qt::KeyboardModifiers)));

    connect(haikuView, SIGNAL(keyEvent(QEvent::Type,int,Qt::KeyboardModifiers,QString)),

            this, SLOT(haikuKeyEvent(QEvent::Type,int,Qt::KeyboardModifiers,QString)));

    connect(haikuView, SIGNAL(enteredView()), this, SLOT(haikuEnteredView()));

    connect(haikuView, SIGNAL(exitedView()), this, SLOT(haikuExitedView()));

    connect(haikuView, SIGNAL(drawRequest(QRect)), this, SLOT(haikuDrawRequest(QRect)));

    m_view = haikuView;

    m_window->LockLooper();

    m_window->AddChild(m_view);

    m_view->MakeFocus();

    m_window->UnlockLooper();

QHaikuRasterWindow::~QHaikuRasterWindow()

    m_window->LockLooper();

    m_view->RemoveSelf();

    m_window->UnlockLooper();

    delete m_view;

    m_view = nullptr;

BView* QHaikuRasterWindow::nativeViewHandle() const

    return m_view;

QT_END_NAMESPACE