// Copyright (C) 2019 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include <QtCore/qt_windows.h>
#include "qwindowspointerhandler.h"
#include "qwindowsmousehandler.h"
#if QT_CONFIG(tabletevent)
# include "qwindowstabletsupport.h"
#endif
#include "qwindowskeymapper.h"
#include "qwindowscontext.h"
#include "qwindowswindow.h"
#include "qwindowsintegration.h"
#include "qwindowsscreen.h"
#include <QtGui/qguiapplication.h>
#include <QtGui/qscreen.h>
#include <QtGui/qpointingdevice.h>
#include <QtGui/qwindow.h>
#include <QtGui/private/qguiapplication_p.h>
#include <QtCore/qvarlengtharray.h>
#include <QtCore/qloggingcategory.h>
#include <QtCore/qqueue.h>
#include <algorithm>
#include <windowsx.h>
QT_BEGIN_NAMESPACE
enum {
QT_PT_POINTER = 1,
QT_PT_TOUCH = 2,
QT_PT_PEN = 3,
QT_PT_MOUSE = 4,
QT_PT_TOUCHPAD = 5, // MinGW is missing PT_TOUCHPAD
};
qint64 QWindowsPointerHandler::m_nextInputDeviceId = 1;
QWindowsPointerHandler::~QWindowsPointerHandler()
{
}
bool QWindowsPointerHandler::translatePointerEvent(QWindow *window, HWND hwnd, QtWindows::WindowsEventType et, MSG msg, LRESULT *result)
{
*result = 0;
const quint32 pointerId = GET_POINTERID_WPARAM(msg.wParam);
if (!GetPointerType(pointerId, &m_pointerType)) {
qWarning() << "GetPointerType() failed:" << qt_error_string();
return false;
}
switch (m_pointerType) {
case QT_PT_POINTER:
case QT_PT_MOUSE:
case QT_PT_TOUCHPAD: {
// Let Mouse/TouchPad be handled using legacy messages.
return false;
}
case QT_PT_TOUCH: {
quint32 pointerCount = 0;
if (!GetPointerFrameTouchInfo(pointerId, &pointerCount, nullptr)) {
qWarning() << "GetPointerFrameTouchInfo() failed:" << qt_error_string();
return false;
}
QVarLengthArray<POINTER_TOUCH_INFO, 10> touchInfo(pointerCount);
if (!GetPointerFrameTouchInfo(pointerId, &pointerCount, touchInfo.data())) {
qWarning() << "GetPointerFrameTouchInfo() failed:" << qt_error_string();
return false;
}
if (!pointerCount)
return false;
// The history count is the same for all the touchpoints in touchInfo
quint32 historyCount = touchInfo[0].pointerInfo.historyCount;
// dispatch any skipped frames if event compression is disabled by the app
if (historyCount > 1 && !QCoreApplication::testAttribute(Qt::AA_CompressHighFrequencyEvents)) {
touchInfo.resize(pointerCount * historyCount);
if (!GetPointerFrameTouchInfoHistory(pointerId,
&historyCount,
&pointerCount,
touchInfo.data())) {
qWarning() << "GetPointerFrameTouchInfoHistory() failed:" << qt_error_string();
return false;
}
// history frames are returned with the most recent frame first so we iterate backwards
bool result = true;
for (auto it = touchInfo.rbegin(), end = touchInfo.rend(); it != end; it += pointerCount) {
result &= translateTouchEvent(window, hwnd, et, msg,
&(*(it + (pointerCount - 1))), pointerCount);
}
return result;
}
return translateTouchEvent(window, hwnd, et, msg, touchInfo.data(), pointerCount);
}
case QT_PT_PEN: {
POINTER_PEN_INFO penInfo;
if (!GetPointerPenInfo(pointerId, &penInfo)) {
qWarning() << "GetPointerPenInfo() failed:" << qt_error_string();
return false;
}
quint32 historyCount = penInfo.pointerInfo.historyCount;
// dispatch any skipped frames if generic or tablet event compression is disabled by the app
if (historyCount > 1
&& (!QCoreApplication::testAttribute(Qt::AA_CompressHighFrequencyEvents)
|| !QCoreApplication::testAttribute(Qt::AA_CompressTabletEvents))) {
QVarLengthArray<POINTER_PEN_INFO, 10> penInfoHistory(historyCount);
if (!GetPointerPenInfoHistory(pointerId, &historyCount, penInfoHistory.data())) {
qWarning() << "GetPointerPenInfoHistory() failed:" << qt_error_string();
return false;
}
// history frames are returned with the most recent frame first so we iterate backwards
bool result = true;
for (auto it = penInfoHistory.rbegin(), end = penInfoHistory.rend(); it != end; ++it) {
result &= translatePenEvent(window, hwnd, et, msg, &(*(it)));
}
return result;
}
return translatePenEvent(window, hwnd, et, msg, &penInfo);
}
}
return false;
}
namespace {
struct MouseEvent {
QEvent::Type type;
Qt::MouseButton button;
};
} // 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};
}
static Qt::MouseButtons mouseButtonsFromKeyState(WPARAM keyState)
{
Qt::MouseButtons result = Qt::NoButton;
if (keyState & MK_LBUTTON)
result |= Qt::LeftButton;
if (keyState & MK_RBUTTON)
result |= Qt::RightButton;
if (keyState & MK_MBUTTON)
result |= Qt::MiddleButton;
if (keyState & MK_XBUTTON1)
result |= Qt::XButton1;
if (keyState & MK_XBUTTON2)
result |= Qt::XButton2;
return result;
}
static Qt::MouseButtons queryMouseButtons()
{
Qt::MouseButtons result = Qt::NoButton;
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 QWindow *getWindowUnderPointer(QWindow *window, QPoint globalPos)
{
QWindowsWindow *platformWindow = static_cast<QWindowsWindow *>(window->handle());
QWindow *currentWindowUnderPointer = platformWindow->hasMouseCapture() ?
QWindowsScreen::windowAt(globalPos, CWP_SKIPINVISIBLE | CWP_SKIPTRANSPARENT) : window;
while (currentWindowUnderPointer && currentWindowUnderPointer->flags() & Qt::WindowTransparentForInput)
currentWindowUnderPointer = currentWindowUnderPointer->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 (!currentWindowUnderPointer) {
const QRect clientRect(QPoint(0, 0), window->size());
if (clientRect.contains(globalPos))
currentWindowUnderPointer = window;
}
return currentWindowUnderPointer;
}
static bool trackLeave(HWND hwnd)
{
TRACKMOUSEEVENT tme;
tme.cbSize = sizeof(TRACKMOUSEEVENT);
tme.dwFlags = TME_LEAVE;
tme.hwndTrack = hwnd;
tme.dwHoverTime = HOVER_DEFAULT;
return TrackMouseEvent(&tme);
}
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;
}
QWindowsPointerHandler::QPointingDevicePtr QWindowsPointerHandler::createTouchDevice(bool mouseEmulation)
{
const int digitizers = GetSystemMetrics(SM_DIGITIZER);
if (!(digitizers & (NID_INTEGRATED_TOUCH | NID_EXTERNAL_TOUCH)))
return nullptr;
const int tabletPc = GetSystemMetrics(SM_TABLETPC);
const int maxTouchPoints = GetSystemMetrics(SM_MAXIMUMTOUCHES);
const QPointingDevice::DeviceType type = (digitizers & NID_INTEGRATED_TOUCH)
? QInputDevice::DeviceType::TouchScreen : QInputDevice::DeviceType::TouchPad;
QInputDevice::Capabilities capabilities = QInputDevice::Capability::Position
| QInputDevice::Capability::Area
| QInputDevice::Capability::NormalizedPosition;
if (type != QInputDevice::DeviceType::TouchScreen) {
capabilities.setFlag(QInputDevice::Capability::MouseEmulation);
capabilities.setFlag(QInputDevice::Capability::Scroll);
} else if (mouseEmulation) {
capabilities.setFlag(QInputDevice::Capability::MouseEmulation);
}
const int flags = digitizers & ~NID_READY;
qCDebug(lcQpaEvents) << "Digitizers:" << Qt::hex << Qt::showbase << flags
<< "Ready:" << (digitizers & NID_READY) << Qt::dec << Qt::noshowbase
<< "Tablet PC:" << tabletPc << "Max touch points:" << maxTouchPoints << "Capabilities:" << capabilities;
const int buttonCount = type == QInputDevice::DeviceType::TouchScreen ? 1 : 3;
// TODO: use system-provided name and device ID rather than empty-string and m_nextInputDeviceId
const qint64 systemId = m_nextInputDeviceId++ | (qint64(flags << 2));
auto d = new QPointingDevice(QString(), systemId, type,
QPointingDevice::PointerType::Finger,
capabilities, maxTouchPoints, buttonCount,
QString(), QPointingDeviceUniqueId::fromNumericId(systemId));
return QPointingDevicePtr(d);
}
void QWindowsPointerHandler::clearEvents()
{
m_lastEventType = QEvent::None;
m_lastEventButton = Qt::NoButton;
}
void QWindowsPointerHandler::handleCaptureRelease(QWindow *window,
QWindow *currentWindowUnderPointer,
HWND hwnd,
QEvent::Type eventType,
Qt::MouseButtons mouseButtons)
{
auto *platformWindow = static_cast<QWindowsWindow *>(window->handle());
// Qt expects the platform plugin to capture the mouse on any button press until release.
if (!platformWindow->hasMouseCapture() && eventType == QEvent::MouseButtonPress) {
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)
&& eventType == QEvent::MouseButtonRelease
&& !mouseButtons) {
platformWindow->setMouseGrabEnabled(false);
qCDebug(lcQpaEvents) << "Releasing automatic mouse capture " << 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_currentWindow &&
(!platformWindow->hasMouseCapture() || currentWindowUnderPointer == window)) {
trackLeave(hwnd);
m_currentWindow = window;
}
}
void QWindowsPointerHandler::handleEnterLeave(QWindow *window,
QWindow *currentWindowUnderPointer,
QPoint globalPos)
{
auto *platformWindow = static_cast<QWindowsWindow *>(window->handle());
const bool hasCapture = platformWindow->hasMouseCapture();
// 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 translateMouseEvent(WM_MOUSELEAVE).
// 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_windowUnderPointer && m_windowUnderPointer != currentWindowUnderPointer
&& (!hasCapture || window == m_windowUnderPointer))
|| (hasCapture && m_previousCaptureWindow != window && m_windowUnderPointer
&& m_windowUnderPointer != window)) {
qCDebug(lcQpaEvents) << "Leaving window " << m_windowUnderPointer;
QWindowSystemInterface::handleLeaveEvent(m_windowUnderPointer);
if (hasCapture && currentWindowUnderPointer != window) {
// Clear tracking if capturing and current window is not the capturing window
// to avoid leave when mouse actually leaves the application.
m_currentWindow = 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 ((currentWindowUnderPointer && m_windowUnderPointer != currentWindowUnderPointer
&& (!hasCapture || currentWindowUnderPointer == window))
|| (m_previousCaptureWindow && !hasCapture && currentWindowUnderPointer
&& currentWindowUnderPointer != m_previousCaptureWindow)) {
QPoint wumLocalPos;
if (QWindowsWindow *wumPlatformWindow = QWindowsWindow::windowsWindowOf(currentWindowUnderPointer)) {
wumLocalPos = wumPlatformWindow->mapFromGlobal(globalPos);
wumPlatformWindow->applyCursor();
}
qCDebug(lcQpaEvents) << "Entering window " << currentWindowUnderPointer;
QWindowSystemInterface::handleEnterEvent(currentWindowUnderPointer, wumLocalPos, globalPos);
}
// We need to track m_windowUnderPointer separately from m_currentWindow, as Windows
// mouse tracking will not trigger WM_MOUSELEAVE for leaving window when mouse capture is set.
m_windowUnderPointer = currentWindowUnderPointer;
}
m_previousCaptureWindow = hasCapture ? window : nullptr;
}
bool QWindowsPointerHandler::translateTouchEvent(QWindow *window, HWND hwnd,
QtWindows::WindowsEventType et,
MSG msg, PVOID vTouchInfo, quint32 count)
{
Q_UNUSED(hwnd);
auto *touchInfo = static_cast<POINTER_TOUCH_INFO *>(vTouchInfo);
if (et & QtWindows::NonClientEventFlag)
return false; // Let DefWindowProc() handle Non Client messages.
if (count < 1)
return false;
if (msg.message == WM_POINTERCAPTURECHANGED) {
QWindowSystemInterface::handleTouchCancelEvent(window, m_touchDevice.data(),
QWindowsKeyMapper::queryKeyboardModifiers());
m_lastTouchPoints.clear();
return true;
}
if (msg.message == WM_POINTERLEAVE) {
for (quint32 i = 0; i < count; ++i) {
const quint32 pointerId = touchInfo[i].pointerInfo.pointerId;
int id = m_touchInputIDToTouchPointID.value(pointerId, -1);
if (id != -1)
m_lastTouchPoints.remove(id);
}
}
// Only handle down/up/update, ignore others like WM_POINTERENTER, WM_POINTERLEAVE, etc.
if (msg.message > WM_POINTERUP)
return false;
const QScreen *screen = window->screen();
if (!screen)
screen = QGuiApplication::primaryScreen();
if (!screen)
return false;
const QRect screenGeometry = screen->geometry();
QList<QWindowSystemInterface::TouchPoint> touchPoints;
if (QWindowsContext::verbose > 1)
qCDebug(lcQpaEvents).noquote().nospace() << Qt::showbase
<< __FUNCTION__
<< " message=" << Qt::hex << msg.message
<< " count=" << Qt::dec << count;
QEventPoint::States allStates;
QSet<int> inputIds;
for (quint32 i = 0; i < count; ++i) {
if (QWindowsContext::verbose > 1)
qCDebug(lcQpaEvents).noquote().nospace() << Qt::showbase
<< " TouchPoint id=" << touchInfo[i].pointerInfo.pointerId
<< " frame=" << touchInfo[i].pointerInfo.frameId
<< " flags=" << Qt::hex << touchInfo[i].pointerInfo.pointerFlags;
QWindowSystemInterface::TouchPoint touchPoint;
const quint32 pointerId = touchInfo[i].pointerInfo.pointerId;
int id = m_touchInputIDToTouchPointID.value(pointerId, -1);
if (id == -1) {
// Start tracking after fingers touch the screen. Ignore bogus updates after touch is released.
if ((touchInfo[i].pointerInfo.pointerFlags & POINTER_FLAG_DOWN) == 0)
continue;
id = m_touchInputIDToTouchPointID.size();
m_touchInputIDToTouchPointID.insert(pointerId, id);
}
touchPoint.id = id;
touchPoint.pressure = (touchInfo[i].touchMask & TOUCH_MASK_PRESSURE) ?
touchInfo[i].pressure / 1024.0 : 1.0;
if (m_lastTouchPoints.contains(touchPoint.id))
touchPoint.normalPosition = m_lastTouchPoints.value(touchPoint.id).normalPosition;
const QPointF screenPos = QPointF(touchInfo[i].pointerInfo.ptPixelLocation.x,
touchInfo[i].pointerInfo.ptPixelLocation.y);
if (touchInfo[i].touchMask & TOUCH_MASK_CONTACTAREA)
touchPoint.area.setSize(QSizeF(touchInfo[i].rcContact.right - touchInfo[i].rcContact.left,
touchInfo[i].rcContact.bottom - touchInfo[i].rcContact.top));
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 (touchInfo[i].pointerInfo.pointerFlags & POINTER_FLAG_DOWN) {
touchPoint.state = QEventPoint::State::Pressed;
m_lastTouchPoints.insert(touchPoint.id, touchPoint);
} else if (touchInfo[i].pointerInfo.pointerFlags & POINTER_FLAG_UP) {
touchPoint.state = QEventPoint::State::Released;
m_lastTouchPoints.remove(touchPoint.id);
} else {
touchPoint.state = stationaryTouchPoint ? QEventPoint::State::Stationary : QEventPoint::State::Updated;
m_lastTouchPoints.insert(touchPoint.id, touchPoint);
}
allStates |= touchPoint.state;
touchPoints.append(touchPoint);
inputIds.insert(touchPoint.id);
// Avoid getting repeated messages for this frame if there are multiple pointerIds
SkipPointerFrameMessages(touchInfo[i].pointerInfo.pointerId);
}
// Some devices send touches for each finger in a different message/frame, instead of consolidating
// them in the same frame as we were expecting. We account for missing unreleased touches here.
for (auto tp : std::as_const(m_lastTouchPoints)) {
if (!inputIds.contains(tp.id)) {
tp.state = QEventPoint::State::Stationary;
allStates |= tp.state;
touchPoints.append(tp);
}
}
if (touchPoints.count() == 0)
return false;
// all touch points released, forget the ids we've seen.
if (allStates == QEventPoint::State::Released)
m_touchInputIDToTouchPointID.clear();
QWindowSystemInterface::handleTouchEvent(window, m_touchDevice.data(), touchPoints,
QWindowsKeyMapper::queryKeyboardModifiers());
return false; // Allow mouse messages to be generated.
}
#if QT_CONFIG(tabletevent)
QWindowsPointerHandler::QPointingDevicePtr QWindowsPointerHandler::findTabletDevice(QPointingDevice::PointerType pointerType) const
{
for (const auto &d : m_tabletDevices) {
if (d->pointerType() == pointerType)
return d;
}
return {};
}
#endif
bool QWindowsPointerHandler::translatePenEvent(QWindow *window, HWND hwnd, QtWindows::WindowsEventType et,
MSG msg, PVOID vPenInfo)
{
#if QT_CONFIG(tabletevent)
if (et & QtWindows::NonClientEventFlag)
return false; // Let DefWindowProc() handle Non Client messages.
auto *penInfo = static_cast<POINTER_PEN_INFO *>(vPenInfo);
RECT pRect, dRect;
if (!GetPointerDeviceRects(penInfo->pointerInfo.sourceDevice, &pRect, &dRect))
return false;
const auto systemId = (qint64)penInfo->pointerInfo.sourceDevice;
const QPoint globalPos = QPoint(penInfo->pointerInfo.ptPixelLocation.x, penInfo->pointerInfo.ptPixelLocation.y);
const QPoint localPos = QWindowsGeometryHint::mapFromGlobal(hwnd, globalPos);
const QPointF hiResGlobalPos = QPointF(dRect.left + qreal(penInfo->pointerInfo.ptHimetricLocation.x - pRect.left)
/ (pRect.right - pRect.left) * (dRect.right - dRect.left),
dRect.top + qreal(penInfo->pointerInfo.ptHimetricLocation.y - pRect.top)
/ (pRect.bottom - pRect.top) * (dRect.bottom - dRect.top));
const bool hasPressure = (penInfo->penMask & PEN_MASK_PRESSURE) != 0;
const bool hasRotation = (penInfo->penMask & PEN_MASK_ROTATION) != 0;
const qreal pressure = hasPressure ? qreal(penInfo->pressure) / 1024.0 : 0.5;
const qreal rotation = hasRotation ? qreal(penInfo->rotation) : 0.0;
const qreal tangentialPressure = 0.0;
const bool hasTiltX = (penInfo->penMask & PEN_MASK_TILT_X) != 0;
const bool hasTiltY = (penInfo->penMask & PEN_MASK_TILT_Y) != 0;
const int xTilt = hasTiltX ? penInfo->tiltX : 0;
const int yTilt = hasTiltY ? penInfo->tiltY : 0;
const int z = 0;
if (QWindowsContext::verbose > 1)
qCDebug(lcQpaEvents).noquote().nospace() << Qt::showbase
<< __FUNCTION__ << " systemId=" << systemId
<< " globalPos=" << globalPos << " localPos=" << localPos << " hiResGlobalPos=" << hiResGlobalPos
<< " message=" << Qt::hex << msg.message
<< " flags=" << Qt::hex << penInfo->pointerInfo.pointerFlags;
QPointingDevice::PointerType type;
// Since it may be the middle button, so if the checks fail then it should
// be set to Middle if it was used.
Qt::MouseButtons mouseButtons = queryMouseButtons();
const bool pointerInContact = IS_POINTER_INCONTACT_WPARAM(msg.wParam);
if (pointerInContact)
mouseButtons = Qt::LeftButton;
if (penInfo->penFlags & (PEN_FLAG_ERASER | PEN_FLAG_INVERTED)) {
type = QPointingDevice::PointerType::Eraser;
} else {
type = QPointingDevice::PointerType::Pen;
if (pointerInContact && penInfo->penFlags & PEN_FLAG_BARREL)
mouseButtons = Qt::RightButton; // Either left or right, not both
}
auto device = findTabletDevice(type);
if (device.isNull()) {
QInputDevice::Capabilities caps(QInputDevice::Capability::Position
| QInputDevice::Capability::MouseEmulation
| QInputDevice::Capability::Hover);
if (hasPressure)
caps |= QInputDevice::Capability::Pressure;
if (hasRotation)
caps |= QInputDevice::Capability::Rotation;
if (hasTiltX)
caps |= QInputDevice::Capability::XTilt;
if (hasTiltY)
caps |= QInputDevice::Capability::YTilt;
const qint64 uniqueId = systemId | (qint64(type) << 32L);
device.reset(new QPointingDevice(QStringLiteral("wmpointer"),
systemId, QInputDevice::DeviceType::Stylus,
type, caps, 1, 3, QString(),
QPointingDeviceUniqueId::fromNumericId(uniqueId)));
QWindowSystemInterface::registerInputDevice(device.data());
m_tabletDevices.append(device);
}
const auto uniqueId = device->uniqueId().numericId();
m_activeTabletDevice = device;
switch (msg.message) {
case WM_POINTERENTER: {
QWindowSystemInterface::handleTabletEnterLeaveProximityEvent(window, device.data(), true);
m_windowUnderPointer = window;
// The local coordinates may fall outside the window.
// Wait until the next update to send the enter event.
m_needsEnterOnPointerUpdate = true;
break;
}
case WM_POINTERLEAVE:
if (m_windowUnderPointer && m_windowUnderPointer == m_currentWindow) {
QWindowSystemInterface::handleLeaveEvent(m_windowUnderPointer);
m_windowUnderPointer = nullptr;
m_currentWindow = nullptr;
}
QWindowSystemInterface::handleTabletEnterLeaveProximityEvent(window, device.data(), false);
break;
case WM_POINTERDOWN:
case WM_POINTERUP:
case WM_POINTERUPDATE: {
QWindow *target = QGuiApplicationPrivate::tabletDevicePoint(uniqueId).target; // Pass to window that grabbed it.
if (!target && m_windowUnderPointer)
target = m_windowUnderPointer;
if (!target)
target = window;
if (m_needsEnterOnPointerUpdate) {
m_needsEnterOnPointerUpdate = false;
if (window != m_currentWindow) {
// make sure we subscribe to leave events for this window
trackLeave(hwnd);
QWindowSystemInterface::handleEnterEvent(window, localPos, globalPos);
m_currentWindow = window;
if (QWindowsWindow *wumPlatformWindow = QWindowsWindow::windowsWindowOf(target))
wumPlatformWindow->applyCursor();
}
}
const Qt::KeyboardModifiers keyModifiers = QWindowsKeyMapper::queryKeyboardModifiers();
QWindowSystemInterface::handleTabletEvent(target, device.data(),
localPos, hiResGlobalPos, mouseButtons,
pressure, xTilt, yTilt, tangentialPressure,
rotation, z, keyModifiers);
return false; // Allow mouse messages to be generated.
}
}
return true;
#else
Q_UNUSED(window);
Q_UNUSED(hwnd);
Q_UNUSED(et);
Q_UNUSED(msg);
Q_UNUSED(vPenInfo);
return false;
#endif
}
static inline bool isMouseEventSynthesizedFromPenOrTouch()
{
// For details, see
// https://docs.microsoft.com/en-us/windows/desktop/tablet/system-events-and-mouse-messages
const LONG_PTR SIGNATURE_MASK = 0xFFFFFF00;
const LONG_PTR MI_WP_SIGNATURE = 0xFF515700;
return ((::GetMessageExtraInfo() & SIGNATURE_MASK) == MI_WP_SIGNATURE);
}
bool QWindowsPointerHandler::translateMouseWheelEvent(QWindow *window,
QWindow *currentWindowUnderPointer,
MSG msg,
QPoint globalPos,
Qt::KeyboardModifiers keyModifiers)
{
QWindow *receiver = currentWindowUnderPointer;
if (!isValidWheelReceiver(receiver))
receiver = window;
if (!isValidWheelReceiver(receiver))
return true;
int delta = GET_WHEEL_DELTA_WPARAM(msg.wParam);
// Qt horizontal wheel rotation orientation is opposite to the one in WM_MOUSEHWHEEL
if (msg.message == WM_MOUSEHWHEEL)
delta = -delta;
const QPoint angleDelta = (msg.message == WM_MOUSEHWHEEL || (keyModifiers & Qt::AltModifier)) ?
QPoint(delta, 0) : QPoint(0, delta);
QPoint localPos = QWindowsGeometryHint::mapFromGlobal(receiver, globalPos);
QWindowSystemInterface::handleWheelEvent(receiver, localPos, globalPos, QPoint(), angleDelta, keyModifiers);
return true;
}
// Process legacy mouse messages here.
bool QWindowsPointerHandler::translateMouseEvent(QWindow *window,
HWND hwnd,
QtWindows::WindowsEventType et,
MSG msg,
LRESULT *result)
{
*result = 0;
QPoint eventPos(GET_X_LPARAM(msg.lParam), GET_Y_LPARAM(msg.lParam));
if ((et & QtWindows::NonClientEventFlag) == 0 && QWindowsBaseWindow::isRtlLayout(hwnd)) {
RECT clientArea;
GetClientRect(hwnd, &clientArea);
eventPos.setX(clientArea.right - eventPos.x());
}
QPoint localPos;
QPoint globalPos;
if ((et == QtWindows::MouseWheelEvent) || (et & QtWindows::NonClientEventFlag)) {
globalPos = eventPos;
localPos = QWindowsGeometryHint::mapFromGlobal(hwnd, eventPos);
} else {
globalPos = QWindowsGeometryHint::mapToGlobal(hwnd, eventPos);
auto targetHwnd = hwnd;
if (auto *pw = window->handle())
targetHwnd = HWND(pw->winId());
localPos = targetHwnd == hwnd
? eventPos
: QWindowsGeometryHint::mapFromGlobal(targetHwnd, globalPos);
}
const Qt::KeyboardModifiers keyModifiers = QWindowsKeyMapper::queryKeyboardModifiers();
QWindow *currentWindowUnderPointer = getWindowUnderPointer(window, globalPos);
if (et == QtWindows::MouseWheelEvent)
return translateMouseWheelEvent(window, currentWindowUnderPointer, msg, globalPos, keyModifiers);
// 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) {
Q_CONSTINIT static QPoint lastMouseMovePos;
if (msg.wParam == 0 && (m_windowUnderPointer.isNull() || globalPos == lastMouseMovePos))
discardEvent = true;
lastMouseMovePos = globalPos;
}
Qt::MouseEventSource source = Qt::MouseEventNotSynthesized;
const QPointingDevice *device = QWindowsMouseHandler::primaryMouse();
// Following the logic of the old mouse handler, only events synthesized
// for touch screen are marked as such. On some systems, using the bit 7 of
// the extra msg info for checking if synthesized for touch does not work,
// so we use the pointer type of the last pointer message.
if (isMouseEventSynthesizedFromPenOrTouch()) {
switch (m_pointerType) {
case QT_PT_TOUCH:
if (QWindowsIntegration::instance()->options() & QWindowsIntegration::DontPassOsMouseEventsSynthesizedFromTouch)
return false;
source = Qt::MouseEventSynthesizedBySystem;
if (!m_touchDevice.isNull())
device = m_touchDevice.data();
break;
case QT_PT_PEN:
#if QT_CONFIG(tabletevent)
qCDebug(lcQpaTablet) << "ignoring synth-mouse event for tablet event from" << device;
return false;
#endif
break;
}
}
const MouseEvent mouseEvent = eventFromMsg(msg);
Qt::MouseButtons mouseButtons;
if (mouseEvent.type >= QEvent::NonClientAreaMouseMove && mouseEvent.type <= QEvent::NonClientAreaMouseButtonDblClick)
mouseButtons = queryMouseButtons();
else
mouseButtons = mouseButtonsFromKeyState(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 & mouseButtons) == 0) {
if (mouseEvent.type == QEvent::NonClientAreaMouseMove) {
QWindowSystemInterface::handleFrameStrutMouseEvent(window, device, localPos, globalPos, mouseButtons, m_lastEventButton,
QEvent::NonClientAreaMouseButtonRelease, keyModifiers, source);
} else {
QWindowSystemInterface::handleMouseEvent(window, device, localPos, globalPos, mouseButtons, 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, device, localPos, globalPos, mouseButtons,
mouseEvent.button, mouseEvent.type, keyModifiers, source);
return false; // Allow further event processing
}
if (msg.message == WM_MOUSELEAVE) {
if (window == m_currentWindow) {
QWindow *leaveTarget = m_windowUnderPointer ? m_windowUnderPointer : m_currentWindow;
qCDebug(lcQpaEvents) << "Leaving window " << leaveTarget;
QWindowSystemInterface::handleLeaveEvent(leaveTarget);
m_windowUnderPointer = nullptr;
m_currentWindow = nullptr;
}
return true;
}
handleCaptureRelease(window, currentWindowUnderPointer, hwnd, mouseEvent.type, mouseButtons);
handleEnterLeave(window, currentWindowUnderPointer, globalPos);
if (!discardEvent && mouseEvent.type != QEvent::None) {
QWindowSystemInterface::handleMouseEvent(window, device, localPos, globalPos, mouseButtons,
mouseEvent.button, mouseEvent.type, keyModifiers, source);
}
// 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();
}
QT_END_NAMESPACE