macOS: Improve mouse logging

Change-Id: Icc81f73e728d9b3669afc37b0c1ef73588f24749
Reviewed-by: Timur Pocheptsov <timur.pocheptsov@qt.io>

src/plugins/platforms/cocoa/qcocoahelpers.mm

@@ -62,7 +62,7 @@ QT_BEGIN_NAMESPACE
 
 Q_LOGGING_CATEGORY(lcQpaWindow, "qt.qpa.window");
 Q_LOGGING_CATEGORY(lcQpaDrawing, "qt.qpa.drawing");
-Q_LOGGING_CATEGORY(lcQpaMouse, "qt.qpa.input.mouse");
+Q_LOGGING_CATEGORY(lcQpaMouse, "qt.qpa.input.mouse", QtCriticalMsg);
 Q_LOGGING_CATEGORY(lcQpaScreen, "qt.qpa.screen");
 
 //

src/plugins/platforms/cocoa/qnsview_dragging.mm

@@ -177,17 +177,17 @@ static QPoint mapWindowCoordinates(QWindow *source, QWindow *target, QPoint poin
 
 - (NSDragOperation)draggingEntered:(id<NSDraggingInfo>)sender
 {
-    return [self handleDrag:sender];
+    return [self handleDrag:(QEvent::DragEnter) sender:sender];
 }
 
 - (NSDragOperation)draggingUpdated:(id<NSDraggingInfo>)sender
 {
     QScopedValueRollback<bool> rollback(m_updatingDrag, true);
-    return [self handleDrag:sender];
+    return [self handleDrag:(QEvent::DragMove) sender:sender];
 }
 
 // Sends drag update to Qt, return the action
-- (NSDragOperation)handleDrag:(id<NSDraggingInfo>)sender
+- (NSDragOperation)handleDrag:(QEvent::Type)dragType sender:(id<NSDraggingInfo>)sender
 {
     if (!m_platformWindow)
         return NSDragOperationNone;
@@ -204,6 +204,11 @@ static QPoint mapWindowCoordinates(QWindow *source, QWindow *target, QPoint poin
     const auto buttons = currentlyPressedMouseButtons();
     const auto point = mapWindowCoordinates(m_platformWindow->window(), target, windowPoint);
 
+    if (dragType == QEvent::DragEnter)
+        qCDebug(lcQpaMouse) << dragType << self << "at" << windowPoint;
+    else
+        qCDebug(lcQpaMouse) << dragType << "at" << windowPoint << "with" << buttons;
+
     QPlatformDragQtResponse response(false, Qt::IgnoreAction, QRect());
     QCocoaDrag* nativeDrag = QCocoaIntegration::instance()->drag();
     if (nativeDrag->currentDrag()) {
@@ -231,6 +236,8 @@ static QPoint mapWindowCoordinates(QWindow *source, QWindow *target, QPoint poin
 
     QPoint windowPoint = QPointF::fromCGPoint([self convertPoint:sender.draggingLocation fromView:nil]).toPoint();
 
+    qCDebug(lcQpaMouse) << QEvent::DragLeave << self << "at" << windowPoint;
+
     // Send 0 mime data to indicate drag exit
     QWindowSystemInterface::handleDrag(target, nullptr,
                                        mapWindowCoordinates(m_platformWindow->window(), target, windowPoint),
@@ -257,6 +264,8 @@ static QPoint mapWindowCoordinates(QWindow *source, QWindow *target, QPoint poin
     const auto buttons = currentlyPressedMouseButtons();
     const auto point = mapWindowCoordinates(m_platformWindow->window(), target, windowPoint);
 
+    qCDebug(lcQpaMouse) << QEvent::Drop << "at" << windowPoint << "with" << buttons;
+
     if (nativeDrag->currentDrag()) {
         // The drag was started from within the application
         response = QWindowSystemInterface::handleDrop(target, nativeDrag->dragMimeData(),
@@ -285,6 +294,8 @@ static QPoint mapWindowCoordinates(QWindow *source, QWindow *target, QPoint poin
     nativeDrag->setAcceptedAction(qt_mac_mapNSDragOperation(operation));
 
     m_buttons = currentlyPressedMouseButtons();
+
+    qCDebug(lcQpaMouse) << "Drag session" << session << "ended, with" << m_buttons;
 }
 
 @end

src/plugins/platforms/cocoa/qnsview_mouse.mm

@@ -93,6 +93,7 @@
 
 - (void)resetMouseButtons
 {
+    qCDebug(lcQpaMouse) << "Reseting mouse buttons";
     m_buttons = Qt::NoButton;
     m_frameStrutButtons = Qt::NoButton;
 }
@@ -145,6 +146,9 @@
     QPoint qtScreenPoint = QCocoaScreen::mapFromNative(screenPoint).toPoint();
 
     ulong timestamp = [theEvent timestamp] * 1000;
+
+    auto eventType = cocoaEvent2QtMouseEvent(theEvent);
+    qCInfo(lcQpaMouse) << "Frame-strut" << eventType << "at" << qtWindowPoint << "with" << m_frameStrutButtons << "in" << self.window;
     QWindowSystemInterface::handleFrameStrutMouseEvent(m_platformWindow->window(), timestamp, qtWindowPoint, qtScreenPoint, m_frameStrutButtons);
 }
 @end
@@ -254,6 +258,11 @@
         button = Qt::RightButton;
     const auto eventType = cocoaEvent2QtMouseEvent(theEvent);
 
+    if (eventType == QEvent::MouseMove)
+        qCDebug(lcQpaMouse) << eventType << "at" << qtWindowPoint << "with" << buttons;
+    else
+        qCInfo(lcQpaMouse) << eventType << "of" << button << "at" << qtWindowPoint << "with" << buttons;
+
     QWindowSystemInterface::handleMouseEvent(targetView->m_platformWindow->window(),
                                              timestamp, qtWindowPoint, qtScreenPoint,
                                              buttons, button, eventType, modifiers);
@@ -459,16 +468,16 @@
 
 - (void)cursorUpdate:(NSEvent *)theEvent
 {
-    qCDebug(lcQpaMouse) << "Updating cursor for" << self << "to" << self.cursor;
-
     // Note: We do not get this callback when moving from a subview that
     // uses the legacy cursorRect API, so the cursor is reset to the arrow
     // cursor. See rdar://34183708
 
-    if (self.cursor)
+    if (self.cursor && self.cursor != NSCursor.currentCursor) {
+        qCInfo(lcQpaMouse) << "Updating cursor for" << self << "to" << self.cursor;
         [self.cursor set];
-    else
+    } else {
         [super cursorUpdate:theEvent];
+    }
 }
 
 - (void)mouseMovedImpl:(NSEvent *)theEvent
@@ -523,6 +532,8 @@
     QPointF screenPoint;
     [self convertFromScreen:[self screenMousePoint:theEvent] toWindowPoint:&windowPoint andScreenPoint:&screenPoint];
     m_platformWindow->m_enterLeaveTargetWindow = m_platformWindow->childWindowAt(windowPoint.toPoint());
+
+    qCInfo(lcQpaMouse) << QEvent::Enter << self << "at" << windowPoint << "with" << currentlyPressedMouseButtons();
     QWindowSystemInterface::handleEnterEvent(m_platformWindow->m_enterLeaveTargetWindow, windowPoint, screenPoint);
 }
 
@@ -541,6 +552,7 @@
     if (!m_platformWindow->isContentView())
         return;
 
+    qCInfo(lcQpaMouse) << QEvent::Leave << self;
     QWindowSystemInterface::handleLeaveEvent(m_platformWindow->m_enterLeaveTargetWindow);
     m_platformWindow->m_enterLeaveTargetWindow = 0;
 }
@@ -639,8 +651,10 @@
     // "isInverted": natural OS X scrolling, inverted from the Qt/other platform/Jens perspective.
     bool isInverted  = [theEvent isDirectionInvertedFromDevice];
 
-    qCDebug(lcQpaMouse) << "scroll wheel @ window pos" << qt_windowPoint << "delta px" << pixelDelta
-            << "angle" << angleDelta << "phase" << phase << (isInverted ? "inverted" : "");
+    qCInfo(lcQpaMouse).nospace() << phase << " at " << qt_windowPoint
+        << " pixelDelta=" << pixelDelta << " angleDelta=" << angleDelta
+        << (isInverted ? " inverted=true" : "");
+
     QWindowSystemInterface::handleWheelEvent(m_platformWindow->window(), qt_timestamp, qt_windowPoint,
             qt_screenPoint, pixelDelta, angleDelta, m_currentWheelModifiers, phase, source, isInverted);
 }