#5592 Post keyboard events to lower level HID client
This commit is contained in:
Jerry (Xinyu Hou)
parent
7c12608f20
commit
e8145aa779
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@ -23,6 +23,7 @@
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#include "base/Log.h"
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#include <Carbon/Carbon.h>
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#include <IOKit/hidsystem/IOHIDLib.h>
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// Note that some virtual keys codes appear more than once. The
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// first instance of a virtual key code maps to the KeyID that we
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@ -469,6 +470,105 @@ OSXKeyState::getKeyMap(synergy::KeyMap& keyMap)
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}
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}
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static io_connect_t getEventDriver(void)
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{
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static mach_port_t sEventDrvrRef = 0;
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mach_port_t masterPort, service, iter;
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kern_return_t kr;
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if (!sEventDrvrRef) {
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// Get master device port
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kr = IOMasterPort(bootstrap_port, &masterPort);
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assert(KERN_SUCCESS == kr);
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kr = IOServiceGetMatchingServices(masterPort,
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IOServiceMatching(kIOHIDSystemClass), &iter);
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assert(KERN_SUCCESS == kr);
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service = IOIteratorNext(iter);
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assert(service);
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kr = IOServiceOpen(service, mach_task_self(),
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kIOHIDParamConnectType, &sEventDrvrRef);
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assert(KERN_SUCCESS == kr);
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IOObjectRelease(service);
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IOObjectRelease(iter);
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}
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return sEventDrvrRef;
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}
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void
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OSXKeyState::postHIDVirtualKey(const UInt8 virtualKeyCode,
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const bool postDown)
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{
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static UInt32 modifiers = 0;
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NXEventData event;
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IOGPoint loc = { 0, 0 };
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UInt32 modifiersDelta = 0;
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bzero(&event, sizeof(NXEventData));
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switch (virtualKeyCode)
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{
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case s_shiftVK:
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case s_superVK:
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case s_altVK:
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case s_controlVK:
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case s_capsLockVK:
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switch (virtualKeyCode)
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{
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case s_shiftVK:
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modifiersDelta = NX_SHIFTMASK;
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m_shiftPressed = postDown;
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break;
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case s_superVK:
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modifiersDelta = NX_COMMANDMASK;
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m_superPressed = postDown;
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break;
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case s_altVK:
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modifiersDelta = NX_ALTERNATEMASK;
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m_altPressed = postDown;
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break;
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case s_controlVK:
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modifiersDelta = NX_CONTROLMASK;
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m_controlPressed = postDown;
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break;
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case s_capsLockVK:
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modifiersDelta = NX_ALPHASHIFTMASK;
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m_capsPressed = postDown;
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break;
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}
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// update the modifier bit
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if (postDown) {
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modifiers |= modifiersDelta;
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}
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else {
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modifiers &= ~modifiersDelta;
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}
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kern_return_t kr;
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kr = IOHIDPostEvent(getEventDriver(), NX_FLAGSCHANGED, loc,
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&event, kNXEventDataVersion, modifiers, true);
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assert(KERN_SUCCESS == kr);
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break;
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default:
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event.key.repeat = false;
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event.key.keyCode = virtualKeyCode;
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event.key.origCharSet = event.key.charSet = NX_ASCIISET;
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event.key.origCharCode = event.key.charCode = 0;
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kr = IOHIDPostEvent(getEventDriver(),
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postDown ? NX_KEYDOWN : NX_KEYUP,
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loc, &event, kNXEventDataVersion, 0, false);
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assert(KERN_SUCCESS == kr);
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break;
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}
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}
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void
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OSXKeyState::fakeKey(const Keystroke& keystroke)
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{
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@ -477,76 +577,14 @@ OSXKeyState::fakeKey(const Keystroke& keystroke)
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KeyButton button = keystroke.m_data.m_button.m_button;
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bool keyDown = keystroke.m_data.m_button.m_press;
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UInt32 client = keystroke.m_data.m_button.m_client;
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CGEventSourceRef source = 0;
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CGKeyCode virtualKey = mapKeyButtonToVirtualKey(button);
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LOG((CLOG_DEBUG1
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" button=0x%04x virtualKey=0x%04x keyDown=%s client=0x%04x",
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button, virtualKey, keyDown ? "down" : "up", client));
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" button=0x%04x virtualKey=0x%04x keyDown=%s",
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button, virtualKey, keyDown ? "down" : "up"));
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CGEventRef ref = CGEventCreateKeyboardEvent(
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source, virtualKey, keyDown);
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if (ref == NULL) {
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LOG((CLOG_CRIT "unable to create keyboard event for keystroke"));
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return;
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}
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postHIDVirtualKey(virtualKey, keyDown);
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// persist modifier state.
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if (virtualKey == s_shiftVK) {
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m_shiftPressed = keyDown;
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}
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if (virtualKey == s_controlVK) {
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m_controlPressed = keyDown;
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}
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if (virtualKey == s_altVK) {
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m_altPressed = keyDown;
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}
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if (virtualKey == s_superVK) {
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m_superPressed = keyDown;
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}
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if (virtualKey == s_capsLockVK) {
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m_capsPressed = keyDown;
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}
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// set the event flags for special keys
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// http://tinyurl.com/pxl742y
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CGEventFlags modifiers = 0;
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if (m_shiftPressed) {
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modifiers |= kCGEventFlagMaskShift;
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}
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if (m_controlPressed) {
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modifiers |= kCGEventFlagMaskControl;
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}
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if (m_altPressed) {
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modifiers |= kCGEventFlagMaskAlternate;
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}
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if (m_superPressed) {
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modifiers |= kCGEventFlagMaskCommand;
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}
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if (m_capsPressed) {
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modifiers |= kCGEventFlagMaskAlphaShift;
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}
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CGEventSetFlags(ref, modifiers);
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CGEventPost(kCGHIDEventTap, ref);
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CFRelease(ref);
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// add a delay if client data isn't zero
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// FIXME -- why?
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if (client != 0) {
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ARCH->sleep(0.01);
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}
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break;
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}
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@ -149,6 +149,12 @@ private:
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static UInt32 mapKeyButtonToVirtualKey(KeyButton keyButton);
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void init();
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// Post a key event to HID manager. It posts an event to HID client, a
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// much lower level than window manager which's the target from carbon
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// CGEventPost
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void postHIDVirtualKey(const UInt8 virtualKeyCode,
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const bool postDown);
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private:
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// OS X uses a physical key if 0 for the 'A' key. synergy reserves
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