diff options
Diffstat (limited to 'intern/ghost/intern/GHOST_WindowWin32.cpp')
| -rw-r--r-- | intern/ghost/intern/GHOST_WindowWin32.cpp | 496 |
1 files changed, 338 insertions, 158 deletions
diff --git a/intern/ghost/intern/GHOST_WindowWin32.cpp b/intern/ghost/intern/GHOST_WindowWin32.cpp index 55525157753..5904a72b186 100644 --- a/intern/ghost/intern/GHOST_WindowWin32.cpp +++ b/intern/ghost/intern/GHOST_WindowWin32.cpp @@ -81,6 +81,7 @@ GHOST_WindowWin32::GHOST_WindowWin32(GHOST_SystemWin32 *system, m_nPressedButtons(0), m_customCursor(0), m_wantAlphaBackground(alphaBackground), + m_wintab(), m_normal_state(GHOST_kWindowStateNormal), m_user32(NULL), m_fpGetPointerInfoHistory(NULL), @@ -89,10 +90,6 @@ GHOST_WindowWin32::GHOST_WindowWin32(GHOST_SystemWin32 *system, m_parentWindowHwnd(parentwindow ? parentwindow->m_hWnd : NULL), m_debug_context(is_debug) { - // Initialize tablet variables - memset(&m_wintab, 0, sizeof(m_wintab)); - m_tabletData = GHOST_TABLET_DATA_NONE; - // Create window if (state != GHOST_kWindowStateFullScreen) { RECT rect; @@ -297,66 +294,25 @@ GHOST_WindowWin32::GHOST_WindowWin32(GHOST_SystemWin32 *system, m_user32, "GetPointerTouchInfoHistory"); } - // Initialize Wintab - m_wintab.handle = ::LoadLibrary("Wintab32.dll"); - if (m_wintab.handle) { - // Get API functions - m_wintab.info = (GHOST_WIN32_WTInfo)::GetProcAddress(m_wintab.handle, "WTInfoA"); - m_wintab.open = (GHOST_WIN32_WTOpen)::GetProcAddress(m_wintab.handle, "WTOpenA"); - m_wintab.close = (GHOST_WIN32_WTClose)::GetProcAddress(m_wintab.handle, "WTClose"); - m_wintab.packet = (GHOST_WIN32_WTPacket)::GetProcAddress(m_wintab.handle, "WTPacket"); - m_wintab.enable = (GHOST_WIN32_WTEnable)::GetProcAddress(m_wintab.handle, "WTEnable"); - m_wintab.overlap = (GHOST_WIN32_WTOverlap)::GetProcAddress(m_wintab.handle, "WTOverlap"); - - // Let's see if we can initialize tablet here. - // Check if WinTab available by getting system context info. - LOGCONTEXT lc = {0}; - lc.lcOptions |= CXO_SYSTEM; - if (m_wintab.open && m_wintab.info && m_wintab.info(WTI_DEFSYSCTX, 0, &lc)) { - // Now init the tablet - /* The maximum tablet size, pressure and orientation (tilt) */ - AXIS TabletX, TabletY, Pressure, Orientation[3]; - - // Open a Wintab context - - // Open the context - lc.lcPktData = PACKETDATA; - lc.lcPktMode = PACKETMODE; - lc.lcOptions |= CXO_MESSAGES; - lc.lcMoveMask = PACKETDATA; - - /* Set the entire tablet as active */ - m_wintab.info(WTI_DEVICES, DVC_X, &TabletX); - m_wintab.info(WTI_DEVICES, DVC_Y, &TabletY); - - /* get the max pressure, to divide into a float */ - BOOL pressureSupport = m_wintab.info(WTI_DEVICES, DVC_NPRESSURE, &Pressure); - if (pressureSupport) - m_wintab.maxPressure = Pressure.axMax; - else - m_wintab.maxPressure = 0; - - /* get the max tilt axes, to divide into floats */ - BOOL tiltSupport = m_wintab.info(WTI_DEVICES, DVC_ORIENTATION, &Orientation); - if (tiltSupport) { - /* does the tablet support azimuth ([0]) and altitude ([1]) */ - if (Orientation[0].axResolution && Orientation[1].axResolution) { - /* all this assumes the minimum is 0 */ - m_wintab.maxAzimuth = Orientation[0].axMax; - m_wintab.maxAltitude = Orientation[1].axMax; - } - else { /* no so dont do tilt stuff */ - m_wintab.maxAzimuth = m_wintab.maxAltitude = 0; - } - } - - // The Wintab spec says we must open the context disabled if we are using cursor masks. - m_wintab.tablet = m_wintab.open(m_hWnd, &lc, FALSE); - if (m_wintab.enable && m_wintab.tablet) { - m_wintab.enable(m_wintab.tablet, TRUE); - } - } + if ((m_wintab.handle = ::LoadLibrary("Wintab32.dll")) && + (m_wintab.info = (GHOST_WIN32_WTInfo)::GetProcAddress(m_wintab.handle, "WTInfoA")) && + (m_wintab.open = (GHOST_WIN32_WTOpen)::GetProcAddress(m_wintab.handle, "WTOpenA")) && + (m_wintab.get = (GHOST_WIN32_WTGet)::GetProcAddress(m_wintab.handle, "WTGetA")) && + (m_wintab.set = (GHOST_WIN32_WTSet)::GetProcAddress(m_wintab.handle, "WTSetA")) && + (m_wintab.close = (GHOST_WIN32_WTClose)::GetProcAddress(m_wintab.handle, "WTClose")) && + (m_wintab.packetsGet = (GHOST_WIN32_WTPacketsGet)::GetProcAddress(m_wintab.handle, + "WTPacketsGet")) && + (m_wintab.queueSizeGet = (GHOST_WIN32_WTQueueSizeGet)::GetProcAddress(m_wintab.handle, + "WTQueueSizeGet")) && + (m_wintab.queueSizeSet = (GHOST_WIN32_WTQueueSizeSet)::GetProcAddress(m_wintab.handle, + "WTQueueSizeSet")) && + (m_wintab.enable = (GHOST_WIN32_WTEnable)::GetProcAddress(m_wintab.handle, "WTEnable")) && + (m_wintab.overlap = (GHOST_WIN32_WTOverlap)::GetProcAddress(m_wintab.handle, "WTOverlap"))) { + initializeWintab(); + // Determine which tablet API to use and enable it. + updateWintab(m_system->m_windowFocus, m_system->m_windowFocus); } + CoCreateInstance( CLSID_TaskbarList, NULL, CLSCTX_INPROC_SERVER, IID_ITaskbarList3, (LPVOID *)&m_Bar); } @@ -370,8 +326,9 @@ GHOST_WindowWin32::~GHOST_WindowWin32() } if (m_wintab.handle) { - if (m_wintab.close && m_wintab.tablet) { - m_wintab.close(m_wintab.tablet); + updateWintab(false, false); + if (m_wintab.close && m_wintab.context) { + m_wintab.close(m_wintab.context); } FreeLibrary(m_wintab.handle); @@ -819,6 +776,27 @@ bool GHOST_WindowWin32::getMousePressed() const return m_nPressedButtons; } +bool GHOST_WindowWin32::wintabSysButPressed() const +{ + return m_wintab.numSysButtons; +} + +void GHOST_WindowWin32::updateWintabSysBut(GHOST_MouseCaptureEventWin32 event) +{ + switch (event) { + case MousePressed: + m_wintab.numSysButtons++; + break; + case MouseReleased: + if (m_wintab.numSysButtons) + m_wintab.numSysButtons--; + break; + case OperatorGrab: + case OperatorUngrab: + break; + } +} + HCURSOR GHOST_WindowWin32::getStandardCursor(GHOST_TStandardCursor shape) const { // Convert GHOST cursor to Windows OEM cursor @@ -1022,6 +1000,98 @@ GHOST_TSuccess GHOST_WindowWin32::hasCursorShape(GHOST_TStandardCursor cursorSha return (getStandardCursor(cursorShape)) ? GHOST_kSuccess : GHOST_kFailure; } +void GHOST_WindowWin32::updateWintab(bool active, bool visible) +{ + if (m_wintab.enable && m_wintab.overlap && m_wintab.context) { + bool enable = useTabletAPI(GHOST_kTabletWintab) && visible; + bool overlap = enable && active; + + /* Disabling context while the Window is not minimized can cause issues on receiving Wintab + * input while changing a window for some drivers, so only disable if either Wintab had been + * disabled or the window is minimized. */ + m_wintab.enable(m_wintab.context, enable); + m_wintab.overlap(m_wintab.context, overlap); + + if (!overlap) { + /* WT_PROXIMITY event doesn't occur unless tablet's cursor leaves the proximity while the + * window is active. */ + m_tabletInRange = false; + m_wintab.numSysButtons = 0; + m_wintab.sysButtonsPressed = 0; + } + } +} + +void GHOST_WindowWin32::initializeWintab() +{ + /* Return if wintab library handle doesn't exist or wintab is already initialized. */ + if (!m_wintab.handle || m_wintab.context) { + return; + } + + /* Check if WinTab available by getting system context info. */ + LOGCONTEXT lc = {0}; + if (m_wintab.open && m_wintab.info && m_wintab.queueSizeGet && m_wintab.queueSizeSet && + m_wintab.info(WTI_DEFSYSCTX, 0, &lc)) { + + /* The pressure and orientation (tilt) */ + AXIS Pressure, Orientation[3]; + lc.lcPktData = PACKETDATA; + lc.lcPktMode = PACKETMODE; + lc.lcMoveMask = PACKETDATA; + lc.lcOptions |= CXO_CSRMESSAGES | CXO_MESSAGES; + /* Wacom maps y origin to the tablet's bottom. Invert to match Windows y origin mapping to the + * screen top. */ + lc.lcOutExtY = -lc.lcOutExtY; + + m_wintab.info(WTI_INTERFACE, IFC_NDEVICES, &m_wintab.numDevices); + + BOOL pressureSupport = m_wintab.info(WTI_DEVICES, DVC_NPRESSURE, &Pressure); + m_wintab.maxPressure = pressureSupport ? Pressure.axMax : 0; + + BOOL tiltSupport = m_wintab.info(WTI_DEVICES, DVC_ORIENTATION, &Orientation); + /* Does the tablet support azimuth ([0]) and altitude ([1])? */ + if (tiltSupport && Orientation[0].axResolution && Orientation[1].axResolution) { + /* All this assumes the minimum is 0. */ + m_wintab.maxAzimuth = Orientation[0].axMax; + m_wintab.maxAltitude = Orientation[1].axMax; + } + else { /* No so dont do tilt stuff. */ + m_wintab.maxAzimuth = m_wintab.maxAltitude = 0; + } + + /* The Wintab spec says we must open the context disabled if we are using cursor masks. */ + m_wintab.context = m_wintab.open(m_hWnd, &lc, FALSE); + + /* Wintab provides no way to determine the maximum queue size aside from checking if attempts + * to change the queue size are successful. */ + const int maxQueue = 500; + int queueSize = m_wintab.queueSizeGet(m_wintab.context); + + while (queueSize < maxQueue) { + int testSize = min(queueSize + 16, maxQueue); + if (m_wintab.queueSizeSet(m_wintab.context, testSize)) { + queueSize = testSize; + } + else { + /* From Windows Wintab Documentation for WTQueueSizeSet: + * "If the return value is zero, the context has no queue because the function deletes the + * original queue before attempting to create a new one. The application must continue + * calling the function with a smaller queue size until the function returns a non - zero + * value." + * + * In our case we start with a known valid queue size and in the event of failure roll + * back to the last valid queue size. The Wintab spec dates back to 16 bit Windows, thus + * assumes memory recently deallocated may not be available, which is no longer a practical + * concern. */ + m_wintab.queueSizeSet(m_wintab.context, queueSize); + break; + } + } + m_wintab.pkts.resize(queueSize); + } +} + GHOST_TSuccess GHOST_WindowWin32::getPointerInfo( std::vector<GHOST_PointerInfoWin32> &outPointerInfo, WPARAM wParam, LPARAM lParam) { @@ -1104,28 +1174,20 @@ GHOST_TSuccess GHOST_WindowWin32::getPointerInfo( return GHOST_kSuccess; } -void GHOST_WindowWin32::setTabletData(GHOST_TabletData *pTabletData) +void GHOST_WindowWin32::processWintabDisplayChangeEvent() { - if (pTabletData) { - m_tabletData = *pTabletData; - } - else { - m_tabletData = GHOST_TABLET_DATA_NONE; - } -} + LOGCONTEXT lc_sys = {0}, lc_curr = {0}; -void GHOST_WindowWin32::processWin32TabletActivateEvent(WORD state) -{ - if (!useTabletAPI(GHOST_kTabletWintab)) { - return; - } + if (m_wintab.info && m_wintab.get && m_wintab.set && m_wintab.info(WTI_DEFSYSCTX, 0, &lc_sys)) { - if (m_wintab.enable && m_wintab.tablet) { - m_wintab.enable(m_wintab.tablet, state); + m_wintab.get(m_wintab.context, &lc_curr); - if (m_wintab.overlap && state) { - m_wintab.overlap(m_wintab.tablet, TRUE); - } + lc_curr.lcOutOrgX = lc_sys.lcOutOrgX; + lc_curr.lcOutOrgY = lc_sys.lcOutOrgY; + lc_curr.lcOutExtX = lc_sys.lcOutExtX; + lc_curr.lcOutExtY = -lc_sys.lcOutExtY; + + m_wintab.set(m_wintab.context, &lc_curr); } } @@ -1135,7 +1197,7 @@ bool GHOST_WindowWin32::useTabletAPI(GHOST_TTabletAPI api) const return true; } else if (m_system->getTabletAPI() == GHOST_kTabletAutomatic) { - if (m_wintab.tablet) + if (m_wintab.numDevices) return api == GHOST_kTabletWintab; else return api == GHOST_kTabletNative; @@ -1145,114 +1207,232 @@ bool GHOST_WindowWin32::useTabletAPI(GHOST_TTabletAPI api) const } } -void GHOST_WindowWin32::processWin32TabletInitEvent() +void GHOST_WindowWin32::processWintabProximityEvent(bool inRange) { if (!useTabletAPI(GHOST_kTabletWintab)) { return; } // Let's see if we can initialize tablet here - if (m_wintab.info && m_wintab.tablet) { + if (m_wintab.info && m_wintab.context) { AXIS Pressure, Orientation[3]; /* The maximum tablet size */ BOOL pressureSupport = m_wintab.info(WTI_DEVICES, DVC_NPRESSURE, &Pressure); - if (pressureSupport) - m_wintab.maxPressure = Pressure.axMax; - else - m_wintab.maxPressure = 0; + m_wintab.maxPressure = pressureSupport ? Pressure.axMax : 0; BOOL tiltSupport = m_wintab.info(WTI_DEVICES, DVC_ORIENTATION, &Orientation); - if (tiltSupport) { - /* does the tablet support azimuth ([0]) and altitude ([1]) */ - if (Orientation[0].axResolution && Orientation[1].axResolution) { - m_wintab.maxAzimuth = Orientation[0].axMax; - m_wintab.maxAltitude = Orientation[1].axMax; - } - else { /* no so dont do tilt stuff */ - m_wintab.maxAzimuth = m_wintab.maxAltitude = 0; - } + /* does the tablet support azimuth ([0]) and altitude ([1]) */ + if (tiltSupport && Orientation[0].axResolution && Orientation[1].axResolution) { + m_wintab.maxAzimuth = Orientation[0].axMax; + m_wintab.maxAltitude = Orientation[1].axMax; + } + else { /* no so dont do tilt stuff */ + m_wintab.maxAzimuth = m_wintab.maxAltitude = 0; } } - m_tabletData.Active = GHOST_kTabletModeNone; + m_tabletInRange = inRange; } -void GHOST_WindowWin32::processWin32TabletEvent(WPARAM wParam, LPARAM lParam) +void GHOST_WindowWin32::processWintabInfoChangeEvent(LPARAM lParam) +{ + GHOST_SystemWin32 *system = (GHOST_SystemWin32 *)GHOST_System::getSystem(); + + // Update number of connected Wintab digitizers + if (LOWORD(lParam) == WTI_INTERFACE && HIWORD(lParam) == IFC_NDEVICES) { + m_wintab.info(WTI_INTERFACE, IFC_NDEVICES, &m_wintab.numDevices); + updateWintab((GHOST_WindowWin32 *)system->getWindowManager()->getActiveWindow() == this, + !::IsIconic(m_hWnd)); + } +} + +GHOST_TSuccess GHOST_WindowWin32::wintabMouseToGhost(UINT cursor, + WORD physicalButton, + GHOST_TButtonMask &ghostButton) +{ + const WORD numButtons = 32; + BYTE logicalButtons[numButtons] = {0}; + BYTE systemButtons[numButtons] = {0}; + + m_wintab.info(WTI_CURSORS + cursor, CSR_BUTTONMAP, &logicalButtons); + m_wintab.info(WTI_CURSORS + cursor, CSR_SYSBTNMAP, &systemButtons); + + if (physicalButton >= numButtons) { + return GHOST_kFailure; + } + BYTE lb = logicalButtons[physicalButton]; + + if (lb >= numButtons) { + return GHOST_kFailure; + } + switch (systemButtons[lb]) { + case SBN_LCLICK: + ghostButton = GHOST_kButtonMaskLeft; + return GHOST_kSuccess; + case SBN_RCLICK: + ghostButton = GHOST_kButtonMaskRight; + return GHOST_kSuccess; + case SBN_MCLICK: + ghostButton = GHOST_kButtonMaskMiddle; + return GHOST_kSuccess; + default: + return GHOST_kFailure; + } +} + +GHOST_TSuccess GHOST_WindowWin32::getWintabInfo(std::vector<GHOST_WintabInfoWin32> &outWintabInfo) { if (!useTabletAPI(GHOST_kTabletWintab)) { - return; + return GHOST_kFailure; } - if (m_wintab.packet && m_wintab.tablet) { - PACKET pkt; - if (m_wintab.packet((HCTX)lParam, wParam, &pkt)) { - switch (pkt.pkCursor % 3) { /* % 3 for multiple devices ("DualTrack") */ - case 0: - m_tabletData.Active = GHOST_kTabletModeNone; /* puck - not yet supported */ - break; - case 1: - m_tabletData.Active = GHOST_kTabletModeStylus; /* stylus */ - break; - case 2: - m_tabletData.Active = GHOST_kTabletModeEraser; /* eraser */ - break; - } + if (!(m_wintab.packetsGet && m_wintab.context)) { + return GHOST_kFailure; + } - if (m_wintab.maxPressure > 0) { - m_tabletData.Pressure = (float)pkt.pkNormalPressure / (float)m_wintab.maxPressure; - } - else { - m_tabletData.Pressure = 1.0f; - } + GHOST_SystemWin32 *system = (GHOST_SystemWin32 *)GHOST_System::getSystem(); - if ((m_wintab.maxAzimuth > 0) && (m_wintab.maxAltitude > 0)) { - ORIENTATION ort = pkt.pkOrientation; - float vecLen; - float altRad, azmRad; /* in radians */ + updatePendingWintabEvents(); - /* - * from the wintab spec: - * orAzimuth Specifies the clockwise rotation of the - * cursor about the z axis through a full circular range. - * - * orAltitude Specifies the angle with the x-y plane - * through a signed, semicircular range. Positive values - * specify an angle upward toward the positive z axis; - * negative values specify an angle downward toward the negative z axis. - * - * wintab.h defines .orAltitude as a UINT but documents .orAltitude - * as positive for upward angles and negative for downward angles. - * WACOM uses negative altitude values to show that the pen is inverted; - * therefore we cast .orAltitude as an (int) and then use the absolute value. - */ - - /* convert raw fixed point data to radians */ - altRad = (float)((fabs((float)ort.orAltitude) / (float)m_wintab.maxAltitude) * M_PI / 2.0); - azmRad = (float)(((float)ort.orAzimuth / (float)m_wintab.maxAzimuth) * M_PI * 2.0); - - /* find length of the stylus' projected vector on the XY plane */ - vecLen = cos(altRad); - - /* from there calculate X and Y components based on azimuth */ - m_tabletData.Xtilt = sin(azmRad) * vecLen; - m_tabletData.Ytilt = (float)(sin(M_PI / 2.0 - azmRad) * vecLen); + auto &pendingEvents = m_wintab.pendingEvents; + size_t pendingEventSize = pendingEvents.size(); + outWintabInfo.resize(pendingEventSize); + + for (int i = 0; i < pendingEventSize; i++) { + PACKET pkt = pendingEvents.front(); + pendingEvents.pop(); + + GHOST_TabletData tabletData = GHOST_TABLET_DATA_NONE; + switch (pkt.pkCursor % 3) { /* % 3 for multiple devices ("DualTrack") */ + case 0: + tabletData.Active = GHOST_kTabletModeNone; /* puck - not yet supported */ + break; + case 1: + tabletData.Active = GHOST_kTabletModeStylus; /* stylus */ + break; + case 2: + tabletData.Active = GHOST_kTabletModeEraser; /* eraser */ + break; + } + + if (m_wintab.maxPressure > 0) { + tabletData.Pressure = (float)pkt.pkNormalPressure / (float)m_wintab.maxPressure; + } + + if ((m_wintab.maxAzimuth > 0) && (m_wintab.maxAltitude > 0)) { + ORIENTATION ort = pkt.pkOrientation; + float vecLen; + float altRad, azmRad; /* in radians */ + + /* + * from the wintab spec: + * orAzimuth Specifies the clockwise rotation of the + * cursor about the z axis through a full circular range. + * + * orAltitude Specifies the angle with the x-y plane + * through a signed, semicircular range. Positive values + * specify an angle upward toward the positive z axis; + * negative values specify an angle downward toward the negative z axis. + * + * wintab.h defines .orAltitude as a UINT but documents .orAltitude + * as positive for upward angles and negative for downward angles. + * WACOM uses negative altitude values to show that the pen is inverted; + * therefore we cast .orAltitude as an (int) and then use the absolute value. + */ + + /* convert raw fixed point data to radians */ + altRad = (float)((fabs((float)ort.orAltitude) / (float)m_wintab.maxAltitude) * M_PI / 2.0); + azmRad = (float)(((float)ort.orAzimuth / (float)m_wintab.maxAzimuth) * M_PI * 2.0); + + /* find length of the stylus' projected vector on the XY plane */ + vecLen = cos(altRad); + + /* from there calculate X and Y components based on azimuth */ + tabletData.Xtilt = sin(azmRad) * vecLen; + tabletData.Ytilt = (float)(sin(M_PI / 2.0 - azmRad) * vecLen); + } + + outWintabInfo[i].x = pkt.pkX; + outWintabInfo[i].y = pkt.pkY; + + /* Some Wintab libraries don't handle relative button input correctly, so we track button + * presses manually. Examples include Wacom's Bamboo modifying button events in the queue when + * peeked, or missing events when entering the window when the context is not on top. */ + DWORD buttonsChanged = m_wintab.sysButtonsPressed ^ pkt.pkButtons; + + /* Find the index for the changed button from the button map. */ + WORD physicalButton = 0; + for (DWORD diff = (unsigned)buttonsChanged >> 1; diff > 0; diff = (unsigned)diff >> 1) { + physicalButton++; + } + + if (buttonsChanged && + wintabMouseToGhost(pkt.pkCursor, physicalButton, outWintabInfo[i].button)) { + if (buttonsChanged & pkt.pkButtons) { + outWintabInfo[i].type = GHOST_kEventButtonDown; } else { - m_tabletData.Xtilt = 0.0f; - m_tabletData.Ytilt = 0.0f; + outWintabInfo[i].type = GHOST_kEventButtonUp; } } + else { + outWintabInfo[i].type = GHOST_kEventCursorMove; + } + + m_wintab.sysButtonsPressed = pkt.pkButtons; + + outWintabInfo[i].time = system->millisSinceStart(pkt.pkTime); + outWintabInfo[i].tabletData = tabletData; } + + return GHOST_kSuccess; } -void GHOST_WindowWin32::bringTabletContextToFront() +/* Wintab (per documentation but may vary with implementation) does not update when its event + * buffer is full. This is an issue because we need some synchronization point between Wintab + * events and Win32 events, so we can't drain and process the queue immediately. We need to + * associate Wintab mouse events to Win32 mouse events because Wintab buttons are modal (a button + * associated to left click is not always a left click) and there's no way to reconstruct their + * mode from the Wintab API alone. There is no guaranteed ordering between Wintab and Win32 mouse + * events and no documented time stamp shared between the two, so we synchronize on mouse button + * events. */ +void GHOST_WindowWin32::updatePendingWintabEvents() { - if (!useTabletAPI(GHOST_kTabletWintab)) { + if (!(m_wintab.packetsGet && m_wintab.context)) { return; } + GHOST_SystemWin32 *system = (GHOST_SystemWin32 *)GHOST_System::getSystem(); + + auto &pendingEvents = m_wintab.pendingEvents; + + /* Clear outdated events from queue. */ + GHOST_TUns64 currTime = system->getMilliSeconds(); + GHOST_TUns64 timeout = 300; + while (!pendingEvents.empty()) { + GHOST_TUns64 pktTime = system->millisSinceStart(pendingEvents.front().pkTime); + if (currTime - pktTime > timeout) { + pendingEvents.pop(); + } + else { + break; + } + } - if (m_wintab.overlap && m_wintab.tablet) { - m_wintab.overlap(m_wintab.tablet, TRUE); + /* Get new packets. */ + const int numPackets = m_wintab.packetsGet( + m_wintab.context, m_wintab.pkts.size(), m_wintab.pkts.data()); + + int i = 0; + /* Don't queue outdated packets, such events can include packets that occurred before the current + * window lost and regained focus. */ + for (; i < numPackets; i++) { + GHOST_TUns64 pktTime = system->millisSinceStart(m_wintab.pkts[i].pkTime); + if (currTime - pktTime < timeout) { + break; + } + } + for (; i < numPackets; i++) { + pendingEvents.push(m_wintab.pkts[i]); } } |