diff options
Diffstat (limited to 'src/plugins/platforms/windows/qwindowsmousehandler.cpp')
| -rw-r--r-- | src/plugins/platforms/windows/qwindowsmousehandler.cpp | 671 |
1 files changed, 0 insertions, 671 deletions
diff --git a/src/plugins/platforms/windows/qwindowsmousehandler.cpp b/src/plugins/platforms/windows/qwindowsmousehandler.cpp deleted file mode 100644 index 060b3a84bb..0000000000 --- a/src/plugins/platforms/windows/qwindowsmousehandler.cpp +++ /dev/null @@ -1,671 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2016 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the plugins of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** 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 Lesser General Public License Usage -** Alternatively, this file may be used under the terms of the GNU Lesser -** General Public License version 3 as published by the Free Software -** Foundation and appearing in the file LICENSE.LGPL3 included in the -** packaging of this file. Please review the following information to -** ensure the GNU Lesser General Public License version 3 requirements -** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU -** General Public License version 2.0 or (at your option) the GNU General -** Public license version 3 or 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.GPL2 and 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-2.0.html and -** https://www.gnu.org/licenses/gpl-3.0.html. -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "qwindowsmousehandler.h" -#include "qwindowskeymapper.h" -#include "qwindowscontext.h" -#include "qwindowswindow.h" -#include "qwindowsintegration.h" -#include "qwindowsscreen.h" - -#include <qpa/qwindowsysteminterface.h> -#include <QtGui/qguiapplication.h> -#include <QtGui/qscreen.h> -#include <QtGui/qpointingdevice.h> -#include <QtGui/qwindow.h> -#include <QtGui/qcursor.h> - -#include <QtCore/qdebug.h> -#include <QtCore/qscopedpointer.h> - -#include <windowsx.h> - -QT_BEGIN_NAMESPACE - -static inline void compressMouseMove(MSG *msg) -{ - // Compress mouse move events - if (msg->message == WM_MOUSEMOVE) { - MSG mouseMsg; - while (PeekMessage(&mouseMsg, msg->hwnd, WM_MOUSEFIRST, - WM_MOUSELAST, PM_NOREMOVE)) { - if (mouseMsg.message == WM_MOUSEMOVE) { -#define PEEKMESSAGE_IS_BROKEN 1 -#ifdef PEEKMESSAGE_IS_BROKEN - // Since the Windows PeekMessage() function doesn't - // correctly return the wParam for WM_MOUSEMOVE events - // if there is a key release event in the queue - // _before_ the mouse event, we have to also consider - // key release events (kls 2003-05-13): - MSG keyMsg; - bool done = false; - while (PeekMessage(&keyMsg, nullptr, WM_KEYFIRST, WM_KEYLAST, - PM_NOREMOVE)) { - if (keyMsg.time < mouseMsg.time) { - if ((keyMsg.lParam & 0xC0000000) == 0x40000000) { - PeekMessage(&keyMsg, nullptr, keyMsg.message, - keyMsg.message, PM_REMOVE); - } else { - done = true; - break; - } - } else { - break; // no key event before the WM_MOUSEMOVE event - } - } - if (done) - break; -#else - // Actually the following 'if' should work instead of - // the above key event checking, but apparently - // PeekMessage() is broken :-( - if (mouseMsg.wParam != msg.wParam) - break; // leave the message in the queue because - // the key state has changed -#endif - // Update the passed in MSG structure with the - // most recent one. - msg->lParam = mouseMsg.lParam; - msg->wParam = mouseMsg.wParam; - // Extract the x,y coordinates from the lParam as we do in the WndProc - msg->pt.x = GET_X_LPARAM(mouseMsg.lParam); - msg->pt.y = GET_Y_LPARAM(mouseMsg.lParam); - clientToScreen(msg->hwnd, &(msg->pt)); - // Remove the mouse move message - PeekMessage(&mouseMsg, msg->hwnd, WM_MOUSEMOVE, - WM_MOUSEMOVE, PM_REMOVE); - } else { - break; // there was no more WM_MOUSEMOVE event - } - } - } -} - -/*! - \class QWindowsMouseHandler - \brief Windows mouse handler - - Dispatches mouse and touch events. Separate for code cleanliness. - - \internal -*/ - -QWindowsMouseHandler::QWindowsMouseHandler() = default; - -void QWindowsMouseHandler::clearEvents() -{ - m_lastEventType = QEvent::None; - m_lastEventButton = Qt::NoButton; -} - -Qt::MouseButtons QWindowsMouseHandler::queryMouseButtons() -{ - Qt::MouseButtons result; - const bool mouseSwapped = GetSystemMetrics(SM_SWAPBUTTON); - if (GetAsyncKeyState(VK_LBUTTON) < 0) - result |= mouseSwapped ? Qt::RightButton: Qt::LeftButton; - if (GetAsyncKeyState(VK_RBUTTON) < 0) - result |= mouseSwapped ? Qt::LeftButton : Qt::RightButton; - if (GetAsyncKeyState(VK_MBUTTON) < 0) - result |= Qt::MiddleButton; - if (GetAsyncKeyState(VK_XBUTTON1) < 0) - result |= Qt::XButton1; - if (GetAsyncKeyState(VK_XBUTTON2) < 0) - result |= Qt::XButton2; - return result; -} - -static QPoint lastMouseMovePos; - -namespace { -struct MouseEvent { - QEvent::Type type; - Qt::MouseButton button; -}; - -#ifndef QT_NO_DEBUG_STREAM -QDebug operator<<(QDebug d, const MouseEvent &e) -{ - QDebugStateSaver saver(d); - d.nospace(); - d << "MouseEvent(" << e.type << ", " << e.button << ')'; - return d; -} -#endif // QT_NO_DEBUG_STREAM -} // namespace - -static inline Qt::MouseButton extraButton(WPARAM wParam) // for WM_XBUTTON... -{ - return GET_XBUTTON_WPARAM(wParam) == XBUTTON1 ? Qt::BackButton : Qt::ForwardButton; -} - -static inline MouseEvent eventFromMsg(const MSG &msg) -{ - switch (msg.message) { - case WM_MOUSEMOVE: - return {QEvent::MouseMove, Qt::NoButton}; - case WM_LBUTTONDOWN: - return {QEvent::MouseButtonPress, Qt::LeftButton}; - case WM_LBUTTONUP: - return {QEvent::MouseButtonRelease, Qt::LeftButton}; - case WM_LBUTTONDBLCLK: // Qt QPA does not handle double clicks, send as press - return {QEvent::MouseButtonPress, Qt::LeftButton}; - case WM_MBUTTONDOWN: - return {QEvent::MouseButtonPress, Qt::MiddleButton}; - case WM_MBUTTONUP: - return {QEvent::MouseButtonRelease, Qt::MiddleButton}; - case WM_MBUTTONDBLCLK: - return {QEvent::MouseButtonPress, Qt::MiddleButton}; - case WM_RBUTTONDOWN: - return {QEvent::MouseButtonPress, Qt::RightButton}; - case WM_RBUTTONUP: - return {QEvent::MouseButtonRelease, Qt::RightButton}; - case WM_RBUTTONDBLCLK: - return {QEvent::MouseButtonPress, Qt::RightButton}; - case WM_XBUTTONDOWN: - return {QEvent::MouseButtonPress, extraButton(msg.wParam)}; - case WM_XBUTTONUP: - return {QEvent::MouseButtonRelease, extraButton(msg.wParam)}; - case WM_XBUTTONDBLCLK: - return {QEvent::MouseButtonPress, extraButton(msg.wParam)}; - case WM_NCMOUSEMOVE: - return {QEvent::NonClientAreaMouseMove, Qt::NoButton}; - case WM_NCLBUTTONDOWN: - return {QEvent::NonClientAreaMouseButtonPress, Qt::LeftButton}; - case WM_NCLBUTTONUP: - return {QEvent::NonClientAreaMouseButtonRelease, Qt::LeftButton}; - case WM_NCLBUTTONDBLCLK: - return {QEvent::NonClientAreaMouseButtonPress, Qt::LeftButton}; - case WM_NCMBUTTONDOWN: - return {QEvent::NonClientAreaMouseButtonPress, Qt::MiddleButton}; - case WM_NCMBUTTONUP: - return {QEvent::NonClientAreaMouseButtonRelease, Qt::MiddleButton}; - case WM_NCMBUTTONDBLCLK: - return {QEvent::NonClientAreaMouseButtonPress, Qt::MiddleButton}; - case WM_NCRBUTTONDOWN: - return {QEvent::NonClientAreaMouseButtonPress, Qt::RightButton}; - case WM_NCRBUTTONUP: - return {QEvent::NonClientAreaMouseButtonRelease, Qt::RightButton}; - case WM_NCRBUTTONDBLCLK: - return {QEvent::NonClientAreaMouseButtonPress, Qt::RightButton}; - default: // WM_MOUSELEAVE - break; - } - return {QEvent::None, Qt::NoButton}; -} - -bool QWindowsMouseHandler::translateMouseEvent(QWindow *window, HWND hwnd, - QtWindows::WindowsEventType et, - MSG msg, LRESULT *result) -{ - enum : quint64 { signatureMask = 0xffffff00, miWpSignature = 0xff515700 }; - - if (et == QtWindows::MouseWheelEvent) - return translateMouseWheelEvent(window, hwnd, msg, result); - - QPoint winEventPosition(GET_X_LPARAM(msg.lParam), GET_Y_LPARAM(msg.lParam)); - if ((et & QtWindows::NonClientEventFlag) == 0 && QWindowsBaseWindow::isRtlLayout(hwnd)) { - RECT clientArea; - GetClientRect(hwnd, &clientArea); - winEventPosition.setX(clientArea.right - winEventPosition.x()); - } - - QPoint clientPosition; - QPoint globalPosition; - if (et & QtWindows::NonClientEventFlag) { - globalPosition = winEventPosition; - clientPosition = QWindowsGeometryHint::mapFromGlobal(hwnd, globalPosition); - } else { - clientPosition = winEventPosition; - globalPosition = QWindowsGeometryHint::mapToGlobal(hwnd, winEventPosition); - } - - // Windows sends a mouse move with no buttons pressed to signal "Enter" - // when a window is shown over the cursor. Discard the event and only use - // it for generating QEvent::Enter to be consistent with other platforms - - // X11 and macOS. - bool discardEvent = false; - if (msg.message == WM_MOUSEMOVE) { - const bool samePosition = globalPosition == lastMouseMovePos; - lastMouseMovePos = globalPosition; - if (msg.wParam == 0 && (m_windowUnderMouse.isNull() || samePosition)) - discardEvent = true; - } - - Qt::MouseEventSource source = Qt::MouseEventNotSynthesized; - - // Check for events synthesized from touch. Lower byte is touch index, 0 means pen. - static const bool passSynthesizedMouseEvents = - !(QWindowsIntegration::instance()->options() & QWindowsIntegration::DontPassOsMouseEventsSynthesizedFromTouch); - // Check for events synthesized from touch. Lower 7 bits are touch/pen index, bit 8 indicates touch. - // However, when tablet support is active, extraInfo is a packet serial number. This is not a problem - // since we do not want to ignore mouse events coming from a tablet. - // See https://msdn.microsoft.com/en-us/library/windows/desktop/ms703320.aspx - const auto extraInfo = quint64(GetMessageExtraInfo()); - if ((extraInfo & signatureMask) == miWpSignature) { - if (extraInfo & 0x80) { // Bit 7 indicates touch event, else tablet pen. - source = Qt::MouseEventSynthesizedBySystem; - if (!passSynthesizedMouseEvents) - return false; - } - } - - const Qt::KeyboardModifiers keyModifiers = QWindowsKeyMapper::queryKeyboardModifiers(); - const MouseEvent mouseEvent = eventFromMsg(msg); - Qt::MouseButtons buttons; - - if (mouseEvent.type >= QEvent::NonClientAreaMouseMove && mouseEvent.type <= QEvent::NonClientAreaMouseButtonDblClick) - buttons = queryMouseButtons(); - else - buttons = keyStateToMouseButtons(msg.wParam); - - // When the left/right mouse buttons are pressed over the window title bar - // WM_NCLBUTTONDOWN/WM_NCRBUTTONDOWN messages are received. But no UP - // messages are received on release, only WM_NCMOUSEMOVE/WM_MOUSEMOVE. - // We detect it and generate the missing release events here. (QTBUG-75678) - // The last event vars are cleared on QWindowsContext::handleExitSizeMove() - // to avoid generating duplicated release events. - if (m_lastEventType == QEvent::NonClientAreaMouseButtonPress - && (mouseEvent.type == QEvent::NonClientAreaMouseMove || mouseEvent.type == QEvent::MouseMove) - && (m_lastEventButton & buttons) == 0) { - if (mouseEvent.type == QEvent::NonClientAreaMouseMove) { - QWindowSystemInterface::handleFrameStrutMouseEvent(window, clientPosition, globalPosition, buttons, m_lastEventButton, - QEvent::NonClientAreaMouseButtonRelease, keyModifiers, source); - } else { - QWindowSystemInterface::handleMouseEvent(window, clientPosition, globalPosition, buttons, m_lastEventButton, - QEvent::MouseButtonRelease, keyModifiers, source); - } - } - m_lastEventType = mouseEvent.type; - m_lastEventButton = mouseEvent.button; - - if (mouseEvent.type >= QEvent::NonClientAreaMouseMove && mouseEvent.type <= QEvent::NonClientAreaMouseButtonDblClick) { - QWindowSystemInterface::handleFrameStrutMouseEvent(window, clientPosition, - globalPosition, buttons, - mouseEvent.button, mouseEvent.type, - keyModifiers, source); - return false; // Allow further event processing (dragging of windows). - } - - *result = 0; - if (msg.message == WM_MOUSELEAVE) { - qCDebug(lcQpaEvents) << mouseEvent << "for" << window << "previous window under mouse=" - << m_windowUnderMouse << "tracked window=" << m_trackedWindow; - - // When moving out of a window, WM_MOUSEMOVE within the moved-to window is received first, - // so if m_trackedWindow is not the window here, it means the cursor has left the - // application. - if (window == m_trackedWindow) { - QWindow *leaveTarget = m_windowUnderMouse ? m_windowUnderMouse : m_trackedWindow; - qCDebug(lcQpaEvents) << "Generating leave event for " << leaveTarget; - QWindowSystemInterface::handleLeaveEvent(leaveTarget); - m_trackedWindow = nullptr; - m_windowUnderMouse = nullptr; - } - return true; - } - - auto *platformWindow = static_cast<QWindowsWindow *>(window->handle()); - - // If the window was recently resized via mouse doubleclick on the frame or title bar, - // we don't get WM_LBUTTONDOWN or WM_LBUTTONDBLCLK for the second click, - // but we will get at least one WM_MOUSEMOVE with left button down and the WM_LBUTTONUP, - // which will result undesired mouse press and release events. - // To avoid those, we ignore any events with left button down if we didn't - // get the original WM_LBUTTONDOWN/WM_LBUTTONDBLCLK. - if (msg.message == WM_LBUTTONDOWN || msg.message == WM_LBUTTONDBLCLK) { - m_leftButtonDown = true; - } else { - const bool actualLeftDown = buttons & Qt::LeftButton; - if (!m_leftButtonDown && actualLeftDown) { - // Autocapture the mouse for current window to and ignore further events until release. - // Capture is necessary so we don't get WM_MOUSELEAVEs to confuse matters. - // This autocapture is released normally when button is released. - if (!platformWindow->hasMouseCapture()) { - platformWindow->applyCursor(); - platformWindow->setMouseGrabEnabled(true); - platformWindow->setFlag(QWindowsWindow::AutoMouseCapture); - qCDebug(lcQpaEvents) << "Automatic mouse capture for missing buttondown event" << window; - } - m_previousCaptureWindow = window; - return true; - } - if (m_leftButtonDown && !actualLeftDown) - m_leftButtonDown = false; - } - - // In this context, neither an invisible nor a transparent window (transparent regarding mouse - // events, "click-through") can be considered as the window under mouse. - QWindow *currentWindowUnderMouse = platformWindow->hasMouseCapture() ? - QWindowsScreen::windowAt(globalPosition, CWP_SKIPINVISIBLE | CWP_SKIPTRANSPARENT) : window; - while (currentWindowUnderMouse && currentWindowUnderMouse->flags() & Qt::WindowTransparentForInput) - currentWindowUnderMouse = currentWindowUnderMouse->parent(); - // QTBUG-44332: When Qt is running at low integrity level and - // a Qt Window is parented on a Window of a higher integrity process - // using QWindow::fromWinId() (for example, Qt running in a browser plugin) - // ChildWindowFromPointEx() may not find the Qt window (failing with ERROR_ACCESS_DENIED) - if (!currentWindowUnderMouse) { - const QRect clientRect(QPoint(0, 0), window->size()); - if (clientRect.contains(winEventPosition)) - currentWindowUnderMouse = window; - } - - compressMouseMove(&msg); - // Qt expects the platform plugin to capture the mouse on - // any button press until release. - if (!platformWindow->hasMouseCapture() - && (mouseEvent.type == QEvent::MouseButtonPress || mouseEvent.type == QEvent::MouseButtonDblClick)) { - platformWindow->setMouseGrabEnabled(true); - platformWindow->setFlag(QWindowsWindow::AutoMouseCapture); - qCDebug(lcQpaEvents) << "Automatic mouse capture " << window; - // Implement "Click to focus" for native child windows (unless it is a native widget window). - if (!window->isTopLevel() && !window->inherits("QWidgetWindow") && QGuiApplication::focusWindow() != window) - window->requestActivate(); - } else if (platformWindow->hasMouseCapture() - && platformWindow->testFlag(QWindowsWindow::AutoMouseCapture) - && mouseEvent.type == QEvent::MouseButtonRelease - && !buttons) { - platformWindow->setMouseGrabEnabled(false); - qCDebug(lcQpaEvents) << "Releasing automatic mouse capture " << window; - } - - const bool hasCapture = platformWindow->hasMouseCapture(); - const bool currentNotCapturing = hasCapture && currentWindowUnderMouse != window; - // Enter new window: track to generate leave event. - // If there is an active capture, only track if the current window is capturing, - // so we don't get extra leave when cursor leaves the application. - if (window != m_trackedWindow && !currentNotCapturing) { - TRACKMOUSEEVENT tme; - tme.cbSize = sizeof(TRACKMOUSEEVENT); - tme.dwFlags = TME_LEAVE; - tme.hwndTrack = hwnd; - tme.dwHoverTime = HOVER_DEFAULT; // - if (!TrackMouseEvent(&tme)) - qWarning("TrackMouseEvent failed."); - m_trackedWindow = window; - } - - // No enter or leave events are sent as long as there is an autocapturing window. - if (!hasCapture || !platformWindow->testFlag(QWindowsWindow::AutoMouseCapture)) { - // Leave is needed if: - // 1) There is no capture and we move from a window to another window. - // Note: Leaving the application entirely is handled in WM_MOUSELEAVE case. - // 2) There is capture and we move out of the capturing window. - // 3) There is a new capture and we were over another window. - if ((m_windowUnderMouse && m_windowUnderMouse != currentWindowUnderMouse - && (!hasCapture || window == m_windowUnderMouse)) - || (hasCapture && m_previousCaptureWindow != window && m_windowUnderMouse - && m_windowUnderMouse != window)) { - qCDebug(lcQpaEvents) << "Synthetic leave for " << m_windowUnderMouse; - QWindowSystemInterface::handleLeaveEvent(m_windowUnderMouse); - if (currentNotCapturing) { - // Clear tracking if capturing and current window is not the capturing window - // to avoid leave when mouse actually leaves the application. - m_trackedWindow = nullptr; - // We are not officially in any window, but we need to set some cursor to clear - // whatever cursor the left window had, so apply the cursor of the capture window. - platformWindow->applyCursor(); - } - } - // Enter is needed if: - // 1) There is no capture and we move to a new window. - // 2) There is capture and we move into the capturing window. - // 3) The capture just ended and we are over non-capturing window. - if ((currentWindowUnderMouse && m_windowUnderMouse != currentWindowUnderMouse - && (!hasCapture || currentWindowUnderMouse == window)) - || (m_previousCaptureWindow && window != m_previousCaptureWindow && currentWindowUnderMouse - && currentWindowUnderMouse != m_previousCaptureWindow)) { - QPoint localPosition; - qCDebug(lcQpaEvents) << "Entering " << currentWindowUnderMouse; - if (QWindowsWindow *wumPlatformWindow = QWindowsWindow::windowsWindowOf(currentWindowUnderMouse)) { - localPosition = wumPlatformWindow->mapFromGlobal(globalPosition); - wumPlatformWindow->applyCursor(); - } - QWindowSystemInterface::handleEnterEvent(currentWindowUnderMouse, localPosition, globalPosition); - } - // We need to track m_windowUnderMouse separately from m_trackedWindow, as - // Windows mouse tracking will not trigger WM_MOUSELEAVE for leaving window when - // mouse capture is set. - m_windowUnderMouse = currentWindowUnderMouse; - } - - if (!discardEvent && mouseEvent.type != QEvent::None) { - QWindowSystemInterface::handleMouseEvent(window, winEventPosition, globalPosition, buttons, - mouseEvent.button, mouseEvent.type, - keyModifiers, source); - } - m_previousCaptureWindow = hasCapture ? window : nullptr; - // QTBUG-48117, force synchronous handling for the extra buttons so that WM_APPCOMMAND - // is sent for unhandled WM_XBUTTONDOWN. - return (msg.message != WM_XBUTTONUP && msg.message != WM_XBUTTONDOWN && msg.message != WM_XBUTTONDBLCLK) - || QWindowSystemInterface::flushWindowSystemEvents(); -} - -static bool isValidWheelReceiver(QWindow *candidate) -{ - if (candidate) { - const QWindow *toplevel = QWindowsWindow::topLevelOf(candidate); - if (toplevel->handle() && toplevel->handle()->isForeignWindow()) - return true; - if (const QWindowsWindow *ww = QWindowsWindow::windowsWindowOf(toplevel)) - return !ww->testFlag(QWindowsWindow::BlockedByModal); - } - - return false; -} - -static void redirectWheelEvent(QWindow *window, const QPoint &globalPos, int delta, - Qt::Orientation orientation, Qt::KeyboardModifiers mods) -{ - // Redirect wheel event to one of the following, in order of preference: - // 1) The window under mouse - // 2) The window receiving the event - // If a window is blocked by modality, it can't get the event. - - QWindow *receiver = QWindowsScreen::windowAt(globalPos, CWP_SKIPINVISIBLE); - while (receiver && receiver->flags().testFlag(Qt::WindowTransparentForInput)) - receiver = receiver->parent(); - bool handleEvent = true; - if (!isValidWheelReceiver(receiver)) { - receiver = window; - if (!isValidWheelReceiver(receiver)) - handleEvent = false; - } - - if (handleEvent) { - const QPoint point = (orientation == Qt::Vertical) ? QPoint(0, delta) : QPoint(delta, 0); - QWindowSystemInterface::handleWheelEvent(receiver, - QWindowsGeometryHint::mapFromGlobal(receiver, globalPos), - globalPos, QPoint(), point, mods); - } -} - -bool QWindowsMouseHandler::translateMouseWheelEvent(QWindow *window, HWND, - MSG msg, LRESULT *) -{ - const Qt::KeyboardModifiers mods = keyStateToModifiers(int(msg.wParam)); - - int delta; - if (msg.message == WM_MOUSEWHEEL || msg.message == WM_MOUSEHWHEEL) - delta = GET_WHEEL_DELTA_WPARAM(msg.wParam); - else - delta = int(msg.wParam); - - Qt::Orientation orientation = (msg.message == WM_MOUSEHWHEEL - || (mods & Qt::AltModifier)) ? - Qt::Horizontal : Qt::Vertical; - - // according to the MSDN documentation on WM_MOUSEHWHEEL: - // a positive value indicates that the wheel was rotated to the right; - // a negative value indicates that the wheel was rotated to the left. - // Qt defines this value as the exact opposite, so we have to flip the value! - if (msg.message == WM_MOUSEHWHEEL) - delta = -delta; - - const QPoint globalPos(GET_X_LPARAM(msg.lParam), GET_Y_LPARAM(msg.lParam)); - redirectWheelEvent(window, globalPos, delta, orientation, mods); - - return true; -} - -bool QWindowsMouseHandler::translateScrollEvent(QWindow *window, HWND, - MSG msg, LRESULT *) -{ - // This is a workaround against some touchpads that send WM_HSCROLL instead of WM_MOUSEHWHEEL. - // We could also handle vertical scroll here but there's no reason to, there's no bug for vertical - // (broken vertical scroll would have been noticed long time ago), so lets keep the change small - // and minimize the chance for regressions. - - int delta = 0; - switch (LOWORD(msg.wParam)) { - case SB_LINELEFT: - delta = 120; - break; - case SB_LINERIGHT: - delta = -120; - break; - case SB_PAGELEFT: - delta = 240; - break; - case SB_PAGERIGHT: - delta = -240; - break; - default: - return false; - } - - redirectWheelEvent(window, QCursor::pos(), delta, Qt::Horizontal, Qt::NoModifier); - - return true; -} - -// from bool QApplicationPrivate::translateTouchEvent() -bool QWindowsMouseHandler::translateTouchEvent(QWindow *window, HWND, - QtWindows::WindowsEventType, - MSG msg, LRESULT *) -{ - using QTouchPoint = QWindowSystemInterface::TouchPoint; - using QTouchPointList = QList<QWindowSystemInterface::TouchPoint>; - - if (!QWindowsContext::instance()->initTouch()) { - qWarning("Unable to initialize touch handling."); - return true; - } - - const QScreen *screen = window->screen(); - if (!screen) - screen = QGuiApplication::primaryScreen(); - if (!screen) - return true; - const QRect screenGeometry = screen->geometry(); - - const int winTouchPointCount = int(msg.wParam); - QScopedArrayPointer<TOUCHINPUT> winTouchInputs(new TOUCHINPUT[winTouchPointCount]); - memset(winTouchInputs.data(), 0, sizeof(TOUCHINPUT) * size_t(winTouchPointCount)); - - QTouchPointList touchPoints; - touchPoints.reserve(winTouchPointCount); - QEventPoint::States allStates; - - GetTouchInputInfo(reinterpret_cast<HTOUCHINPUT>(msg.lParam), - UINT(msg.wParam), winTouchInputs.data(), sizeof(TOUCHINPUT)); - for (int i = 0; i < winTouchPointCount; ++i) { - const TOUCHINPUT &winTouchInput = winTouchInputs[i]; - int id = m_touchInputIDToTouchPointID.value(winTouchInput.dwID, -1); - if (id == -1) { - id = m_touchInputIDToTouchPointID.size(); - m_touchInputIDToTouchPointID.insert(winTouchInput.dwID, id); - } - QTouchPoint touchPoint; - touchPoint.pressure = 1.0; - touchPoint.id = id; - if (m_lastTouchPositions.contains(id)) - touchPoint.normalPosition = m_lastTouchPositions.value(id); - - const QPointF screenPos = QPointF(winTouchInput.x, winTouchInput.y) / qreal(100.); - if (winTouchInput.dwMask & TOUCHINPUTMASKF_CONTACTAREA) - touchPoint.area.setSize(QSizeF(winTouchInput.cxContact, winTouchInput.cyContact) / qreal(100.)); - touchPoint.area.moveCenter(screenPos); - QPointF normalPosition = QPointF(screenPos.x() / screenGeometry.width(), - screenPos.y() / screenGeometry.height()); - const bool stationaryTouchPoint = (normalPosition == touchPoint.normalPosition); - touchPoint.normalPosition = normalPosition; - - if (winTouchInput.dwFlags & TOUCHEVENTF_DOWN) { - touchPoint.state = QEventPoint::State::Pressed; - m_lastTouchPositions.insert(id, touchPoint.normalPosition); - } else if (winTouchInput.dwFlags & TOUCHEVENTF_UP) { - touchPoint.state = QEventPoint::State::Released; - m_lastTouchPositions.remove(id); - } else { - touchPoint.state = (stationaryTouchPoint - ? QEventPoint::State::Stationary - : QEventPoint::State::Updated); - m_lastTouchPositions.insert(id, touchPoint.normalPosition); - } - - allStates |= touchPoint.state; - - touchPoints.append(touchPoint); - } - - CloseTouchInputHandle(reinterpret_cast<HTOUCHINPUT>(msg.lParam)); - - // all touch points released, forget the ids we've seen, they may not be reused - if (allStates == QEventPoint::State::Released) - m_touchInputIDToTouchPointID.clear(); - - QWindowSystemInterface::handleTouchEvent(window, - m_touchDevice.data(), - touchPoints, - QWindowsKeyMapper::queryKeyboardModifiers()); - return true; -} - -bool QWindowsMouseHandler::translateGestureEvent(QWindow *window, HWND hwnd, - QtWindows::WindowsEventType, - MSG msg, LRESULT *) -{ - Q_UNUSED(window); - Q_UNUSED(hwnd); - Q_UNUSED(msg); - return false; -} - -QT_END_NAMESPACE |