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twofingemu.c
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twofingemu.c
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/*
Copyright (C) 2010, 2011 Philipp Merkel <linux@philmerk.de>
Permission to use, copy, modify, and/or distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
PERFORMANCE OF THIS SOFTWARE.
*/
#include <linux/input.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <X11/Xutil.h>
#include <X11/X.h>
#include <X11/Xos.h>
#include <X11/Xatom.h>
#include <X11/extensions/XTest.h>
#include <X11/keysym.h>
#include <X11/extensions/XInput2.h>
#include <X11/extensions/Xrandr.h>
#include "twofingemu.h"
#include "gestures.h"
#include "easing.h"
#include "devices.h"
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/select.h>
#include <time.h>
#include <signal.h>
#include <pthread.h>
#define EXIT_SUCCESS 0
#define EXIT_FAILURE 1
int debugMode = 0;
int inDebugMode() {
return debugMode;
}
/* Daemonize. Source: http://www-theorie.physik.unizh.ch/~dpotter/howto/daemonize (public domain) */
static void daemonize(void) {
pid_t pid, sid;
/* already a daemon */
if (getppid() == 1)
return;
/* Fork off the parent process */
pid = fork();
if (pid < 0) {
exit(EXIT_FAILURE);
}
/* If we got a good PID, then we can exit the parent process. */
if (pid > 0) {
exit(EXIT_SUCCESS);
}
/* At this point we are executing as the child process */
/* Change the file mode mask */
umask(0);
/* Create a new SID for the child process */
sid = setsid();
if (sid < 0) {
exit(EXIT_FAILURE);
}
/* Change the current working directory. This prevents the current
directory from being locked; hence not being able to remove it. */
if ((chdir("/")) < 0) {
exit(EXIT_FAILURE);
}
/* Redirect standard files to /dev/null */
void* r;
r = freopen("/dev/null", "r", stdin);
r = freopen("/dev/null", "w", stdout);
r = freopen("/dev/null", "w", stderr);
r = r;
}
/* Finger information */
FingerInfo fingerInfos[2] = { { .rawX=0, .rawY=0, .rawZ=0, .id = -1, .slotUsed = 0, .setThisTime = 0 }, { .rawX=0, .rawY=0, .rawZ=0,
.id = -1, .slotUsed = 0, .setThisTime = 0 } };
/* X stuff */
Display* display;
Window root;
int screenNum;
int deviceID;
int calibrateDeviceID;
Atom WM_CLASS;
pthread_t xLoopThread;
int randrEvBase;
int randrErrBase;
int xinputEvBase;
int xinputErrBase;
int disableOnGrab = 0;
/* Calibration data */
int calibMinX, calibMaxX, calibMinY, calibMaxY;
unsigned char calibSwapX, calibSwapY, calibSwapAxes;
float calibMatrix[6];
int calibMatrixUse = 0;
/* The width and height of the screen in pixels */
unsigned int screenWidth, screenHeight;
/* Finger data */
int fingersDown = 0;
int fingersWereDown = 0;
/* Has button press of first button been called in XTest? */
int buttonDown = 0;
/* Does the device use the legacy MT protocol? */
int useLegacyProtocol = 0;
/* Blocking Device */
int blockingDeviceID = -1;
int blockingIntervalMilliseconds = BLOCKING_INTERVAL_MS_DEFAULT;
TimeVal lastBlockingInputTime = { 0, 0};
int currentTouchBlocked = 0;
int alsoBlockTwoFingerTouches = 0;
/* Ability to move mouse back after touches */
int moveMouseBackAfterTouches = 0;
int prevMouseX = 0;
int prevMouseY = 0;
/* Signal handling */
pthread_t signalThread;
sigset_t signalSet;
int stopSignalReceived = 0;
/* Handle errors by, well, throwing them away. */
int invalidWindowHandler(Display *dsp, XErrorEvent *err) {
return 0;
}
/* Grab the device so input is captured */
void grab(Display* display, int grabDeviceID) {
if (disableOnGrab) {
if(debugMode) printf("Disabling device instead of grabbing\n");
XDevice *dev = XOpenDevice(display, grabDeviceID);
if(dev) {
unsigned char cEnable = (unsigned char) 0;
XChangeDeviceProperty(display, dev, XInternAtom(display,
"Device Enabled", 0), XA_INTEGER, 8, PropModeReplace, &cEnable, 1);
XCloseDevice(display, dev);
} else {
if(debugMode) printf("Couldn't open device: %i\n", grabDeviceID);
}
} else {
XIEventMask device_mask;
unsigned char mask_data[8] = { 0,0,0,0,0,0,0,0 };
device_mask.mask_len = sizeof(mask_data);
device_mask.mask = mask_data;
XISetMask(device_mask.mask, XI_Motion);
XISetMask(device_mask.mask, XI_ButtonPress);
/* Experiments with X MT support, not working yet */
// XISetMask(device_mask.mask, XI_TouchBegin);
// XISetMask(device_mask.mask, XI_TouchUpdate);
// XISetMask(device_mask.mask, XI_TouchEnd);
// XIGrabModifiers modifiers;
// modifiers.modifiers = XIAnyModifier;
// int r = XIGrabButton(display, grabDeviceID, XIAnyButton, root, None, GrabModeSync,
// GrabModeAsync, True, &device_mask, 1, &modifiers);
// int r = XIGrabTouchBegin(display, grabDeviceID, root, None, &device_mask, 0, modifiers);
int r = XIGrabDevice(display, grabDeviceID, root, CurrentTime, None, GrabModeAsync, GrabModeAsync, False, &device_mask);
if(debugMode) printf("Grab Result: %i\n", r);
}
}
/* Ungrab the device so input can be handled by application directly */
void ungrab(Display* display, int grabDeviceID) {
/* Experiments with X MT support, not working yet */
// XIGrabModifiers modifiers[1] = { { 0, 0 } };
// XIUngrabButton(display, grabDeviceID, 1, root, 1, modifiers);
if (disableOnGrab) {
if(debugMode) printf("Enabling device instead of ungrabbing\n");
XDevice *dev = XOpenDevice(display, grabDeviceID);
if(dev) {
unsigned char cEnable = (unsigned char) 1;
XChangeDeviceProperty(display, dev, XInternAtom(display,
"Device Enabled", 0), XA_INTEGER, 8, PropModeReplace, &cEnable, 1);
XCloseDevice(display, dev);
if(debugMode) printf("Device Enabled: %i\n", grabDeviceID);
} else {
if(debugMode) printf("Couldn't open device: %i\n", grabDeviceID);
}
} else {
XIUngrabDevice(display, grabDeviceID, CurrentTime);
}
}
TimeVal getCurrentTime() {
TimeVal time;
gettimeofday(&time, NULL);
return time;
}
int timeDiff(TimeVal start, TimeVal end)
{
long seconds = end.tv_sec - start.tv_sec;
long microSeconds = end.tv_usec - start.tv_usec;
return (seconds * 1000 + microSeconds/1000);
}
/* Send an XTest event to release the first button if it is currently pressed */
void releaseButton() {
if (buttonDown) {
buttonDown = 0;
XTestFakeButtonEvent(display, 1, False, CurrentTime);
XFlush(display);
/* Experiments with Pressure Sensitivity, not working yet */
/* XDevice * dev = XOpenDevice(display, deviceID);
int axes[3] = {fingerInfos[0].rawX, fingerInfos[0].rawY, fingerInfos[0].rawZ};
XTestFakeDeviceButtonEvent(display, dev, 1, False, axes, 3, 0);
XCloseDevice(display, dev);
XFlush(display);
grab(display, deviceID);*/
}
}
/* Send an XTest event to press the first button if it is not pressed yet */
void pressButton() {
if(!buttonDown) {
/* Experiments with Pressure Sensitivity, not working yet */
/* XDevice * dev = XOpenDevice(display, deviceID);
int axes[3] = {fingerInfos[0].rawX, fingerInfos[0].rawY, fingerInfos[0].rawZ};
XTestFakeDeviceButtonEvent(display, dev, 1, False, axes, 3, 0);
XCloseDevice(display, dev);
XFlush(display);
ungrab(display, deviceID);
XFlush(display);
printf("PRESS!\n");
dev = XOpenDevice(display, deviceID);
XTestFakeDeviceButtonEvent(display, dev, 1, True, axes, 3, 0);
XCloseDevice(display, dev);
*/
buttonDown = 1;
XTestFakeButtonEvent(display, 1, True, CurrentTime);
XFlush(display);
}
}
/* Is the first button currently pressed? */
int isButtonDown() {
return buttonDown;
}
/* Moves the pointer to the given position */
void movePointer(int x, int y, int z) {
/* Experiments with XI events, not working yet */
// int axes[3] = {x, y, z};
// XDevice * dev = XOpenDevice(display, 17);
// XTestFakeDeviceMotionEvent(display, dev, False, 0, axes, 2, 0);
// XCloseDevice(display, dev);
XTestFakeMotionEvent(display, -1, x, y, CurrentTime);
XFlush(display);
}
/* Executes the given action -- synthesizes key/button press, release or both, depending
* on value of whatToDo (EXECUTEACTION_PRESS/_RELEASE/_BOTH). */
void executeAction(Action* action, int whatToDo) {
if (whatToDo & EXECUTEACTION_PRESS) {
if (action->actionType != ACTIONTYPE_NONE && action->modifier != 0) {
if (action->modifier & MODIFIER_SHIFT) {
XTestFakeKeyEvent(display,
XKeysymToKeycode(display, XK_Shift_L), True,
CurrentTime);
XFlush(display);
}
if (action->modifier & MODIFIER_CONTROL) {
XTestFakeKeyEvent(display, XKeysymToKeycode(display,
XK_Control_L), True, CurrentTime);
XFlush(display);
}
if (action->modifier & MODIFIER_ALT) {
XTestFakeKeyEvent(display, XKeysymToKeycode(display, XK_Alt_L),
True, CurrentTime);
XFlush(display);
}
if (action->modifier & MODIFIER_SUPER) {
XTestFakeKeyEvent(display,
XKeysymToKeycode(display, XK_Super_L), True,
CurrentTime);
XFlush(display);
}
}
switch (action->actionType) {
case ACTIONTYPE_BUTTONPRESS:
XTestFakeButtonEvent(display, action->keyButton, True, CurrentTime);
XFlush(display);
break;
case ACTIONTYPE_KEYPRESS:
XTestFakeKeyEvent(display, XKeysymToKeycode(display,
action->keyButton), True, CurrentTime);
XFlush(display);
break;
}
}
if (whatToDo & EXECUTEACTION_RELEASE) {
switch (action->actionType) {
case ACTIONTYPE_BUTTONPRESS:
XTestFakeButtonEvent(display, action->keyButton, False, CurrentTime);
XFlush(display);
break;
case ACTIONTYPE_KEYPRESS:
XTestFakeKeyEvent(display, XKeysymToKeycode(display,
action->keyButton), False, CurrentTime);
XFlush(display);
break;
}
if (action->actionType != ACTIONTYPE_NONE && action->modifier != 0) {
if (action->modifier & MODIFIER_SHIFT) {
XTestFakeKeyEvent(display,
XKeysymToKeycode(display, XK_Shift_L), False,
CurrentTime);
XFlush(display);
}
if (action->modifier & MODIFIER_CONTROL) {
XTestFakeKeyEvent(display, XKeysymToKeycode(display,
XK_Control_L), False, CurrentTime);
XFlush(display);
}
if (action->modifier & MODIFIER_ALT) {
XTestFakeKeyEvent(display, XKeysymToKeycode(display, XK_Alt_L),
False, CurrentTime);
XFlush(display);
}
if (action->modifier & MODIFIER_SUPER) {
XTestFakeKeyEvent(display,
XKeysymToKeycode(display, XK_Super_L), False,
CurrentTime);
XFlush(display);
}
}
}
}
Window getParentWindow(Window w) {
Window root, parent;
Window* childWindows = NULL;
unsigned int childCount;
if(XQueryTree(display, w, &root, &parent, &childWindows, &childCount)) {
if (childWindows != NULL)
XFree(childWindows);
return parent;
} else {
return None;
}
}
Window getLastChildWindow(Window w) {
Window root, parent;
Window* childWindows = NULL;
unsigned int childCount;
if(XQueryTree(display, w, &root, &parent, &childWindows, &childCount)) {
if (childWindows != NULL) {
if(childCount > 0) {
Window child = childWindows[childCount - 1];
XFree(childWindows);
return child;
}
XFree(childWindows);
}
return None;
} else {
return None;
}
}
void storePrevMousePos() {
Window root_return, child_return;
int root_x_return = 0, root_y_return = 0;
int win_x_return = 0, win_y_return = 0;
unsigned int mask_return = 0;
if (XQueryPointer(display, root, &root_return, &child_return, &root_x_return, &root_y_return,
&win_x_return, &win_y_return, &mask_return) == True) {
prevMouseX = root_x_return;
prevMouseY = root_y_return;
}
}
Window getActiveWindow() {
/* Window *root_return = None, *child_return = None;
int *root_x_return = 0, *root_y_return = 0;
int *win_x_return = 0, *win_y_return = 0;
unsigned int *mask_return = 0;
XQueryPointer(display, root, root_return, child_return, root_x_return, root_y_return,
win_x_return, win_y_return, mask_return);
return *child_return;*/
return getCurrentWindow();
}
/* Returns the active top-level window. A top-level window is one that has WM_CLASS set.
* May also return None. */
Window getCurrentWindow() {
/* First get the window that has the input focus */
Window currentWindow;
int revert;
XGetInputFocus(display, ¤tWindow, &revert);
if (currentWindow == None) {
//if(debugMode) printf("Leave getCurrentWindow\n");
return currentWindow;
}
/* Now go through parent windows until we find one with WM_CLASS set. */
XClassHint* classHint = XAllocClassHint();
if(classHint == NULL) {
if(debugMode) printf("Couldn't allocate class hint!!\n");
return None;
}
int i = 0;
while (1) {
//if(debugMode) printf("in Loop\n");
i++;
if(i >= 5) {
if(debugMode) printf("Too many iterations in getCurrentWindow\n");
XFree(classHint);
//if(debugMode) printf("Leave getCurrentWindow\n");
return None;
}
if (currentWindow == root || currentWindow == None) {
//if(debugMode) printf("Reached root!\n");
/* No top-level window available. Should never happen. */
XFree(classHint);
//if(debugMode) printf("Leave getCurrentWindow\n");
return currentWindow;
}
//if(debugMode) printf("Call XGetClassHint!\n");
if (XGetClassHint(display, currentWindow, classHint) == 0) {
//if(debugMode) printf("Has no Class!\n");
/* Has no WM_CLASS, thus no top-level window */
Window parent = getParentWindow(currentWindow);
if(parent == None || currentWindow == parent) {
/* something wrong */
XFree(classHint);
return currentWindow;
}
/* Continue with parent until we find WM_CLASS */
currentWindow = parent;
} else {
//if(debugMode) printf("Clean up class name!\n");
if(classHint->res_class != NULL) XFree(classHint->res_class);
if(classHint->res_name != NULL) XFree(classHint->res_name);
XFree(classHint);
//if(debugMode) printf("Leave getCurrentWindow\n");
return currentWindow;
}
}
}
/* Sets the calibrated x, y coordinates from the raw coordinates in the given FingerInfo */
void calibrate(FingerInfo* fingerInfo) {
float xf; float yf;
if (calibSwapAxes) {
xf = ((float)(fingerInfo->rawY - calibMinX))/((float) (calibMaxX-calibMinX));
yf = ((float)(fingerInfo->rawX - calibMinY))/((float) (calibMaxY-calibMinY));
} else {
xf = ((float)(fingerInfo->rawX - calibMinX))/((float) (calibMaxX-calibMinX));
yf = ((float)(fingerInfo->rawY - calibMinY))/((float) (calibMaxY-calibMinY));
}
if (calibSwapX) xf = 1 - xf;
if (calibSwapY) yf = 1 - yf;
if(calibMatrixUse) {
float xfold = xf;
/* Apply matrix transformation */
xf = xf * calibMatrix[0] + yf * calibMatrix[1] + calibMatrix[2];
yf = xfold * calibMatrix[3] + yf * calibMatrix[4] + calibMatrix[5];
}
fingerInfo->x = xf * screenWidth;
fingerInfo->y = yf * screenHeight;
if (fingerInfo->x < 0)
fingerInfo->x = 0;
if (fingerInfo->y < 0)
fingerInfo->y = 0;
if (fingerInfo->x > screenWidth)
fingerInfo->x = screenWidth;
if (fingerInfo->y > screenHeight)
fingerInfo->y = screenHeight;
}
/* Process the finger data gathered from the last set of events */
void processFingers() {
int i;
fingersDown = 0;
for(i = 0; i < 2; i++) {
if(fingerInfos[i].slotUsed) {
calibrate(&(fingerInfos[i]));
fingersDown++;
}
}
if(fingersWereDown == 0 &&
fingersDown > 0 &&
blockingDeviceID != -1 &&
timeDiff(lastBlockingInputTime, getCurrentTime()) < blockingIntervalMilliseconds) {
currentTouchBlocked = 1;
if(debugMode) printf("Touch blocked.\n");
}
if(moveMouseBackAfterTouches && !currentTouchBlocked && fingersDown > 0 && fingersWereDown == 0) {
storePrevMousePos();
}
if(!currentTouchBlocked || !alsoBlockTwoFingerTouches) {
processFingerGesture(fingerInfos, fingersDown, fingersWereDown, currentTouchBlocked);
}
if(fingersDown == 0) {
currentTouchBlocked = 0;
if(fingersWereDown > 0 && moveMouseBackAfterTouches) {
movePointer(prevMouseX, prevMouseY, 0);
}
}
/* Save number of fingers to compare next time */
fingersWereDown = fingersDown;
}
/* Returns a pointer to the profile of the currently selected
* window, or defaultProfile if there is no specific profile for it or the window is invalid. */
char* getWindowClass(Window w) {
char * result = NULL;
if (w != None) {
XClassHint* classHint = XAllocClassHint();
/* Read WM_CLASS member */
if (XGetClassHint(display, w, classHint)) {
if(classHint->res_class != NULL) {
result = malloc((strlen(classHint->res_name) + 1) * sizeof(char));
if(result != NULL) {
strcpy(result, classHint->res_name);
}
XFree(classHint->res_class);
}
if(classHint->res_name != NULL) XFree(classHint->res_name);
XFree(classHint);
}
}
return result;
}
/* Returns whether the given window is blacklisted */
int isWindowBlacklisted(Window w) {
if(w == None) return 0;
return isWindowBlacklistedForGestures(w);
}
void setScreenSize(XRRScreenChangeNotifyEvent * evt) {
screenWidth = evt->width;
screenHeight = evt->height;
if(debugMode) {
printf("New screen size: %i x %i\n", screenWidth, screenHeight);
}
}
/* X thread that processes X events in parallel to kernel device loop */
void handleXEvent() {
XEvent ev;
XNextEvent(display, &ev);
//if(debugMode) printf("Handle event\n");
if (XGetEventData(display, &(ev.xcookie))) {
XGenericEventCookie *cookie = &(ev.xcookie);
if (cookie->evtype == XI_Motion || cookie->evtype == XI_ButtonPress) {
XIDeviceEvent * devEvt = (XIDeviceEvent*) cookie->data;
if(blockingDeviceID != -1 && devEvt->deviceid == blockingDeviceID) {
// Blocking event received
if(debugMode) printf("Blocking for next %i milliseconds.\n", blockingIntervalMilliseconds);
lastBlockingInputTime = getCurrentTime();
}
}
if (cookie->evtype == XI_PropertyEvent) {
/* Device properties changed -> recalibrate. */
if(debugMode) printf("Device properties changed.\n");
readCalibrationData(0, NULL);
}
/*if (cookie->evtype == XI_Motion) {
//if(debugMode) printf("Motion event\n");
//int r = XIAllowEvents(display, deviceID, XIReplayDevice, CurrentTime);
//printf("XIAllowEvents result: %i\n", r);
} else if(cookie->evtype == XI_ButtonPress) {
//if(debugMode) printf("Button Press\n");
//int r = XIAllowEvents(display, deviceID, XIReplayDevice, CurrentTime);
//printf("XIAllowEvents result: %i\n", r);
}*/
// In an ideal world, the following would work. But unfortunately the touch events
// delivered by evdev are often crap on the eGalax screen, with missing events when there
// should be some. So we still have to read directly from the input device, as bad as that is.
//if (cookie->evtype == XI_TouchBegin || cookie->evtype == XI_TouchUpdate || cookie->evtype == XI_TouchEnd) {
// XIDeviceEvent * devEvt = (XIDeviceEvent*) cookie->data;
// printf("Detail: %i\n", devEvt->detail);
// printf("Mask[0]: %i\n", (int) devEvt->valuators.mask[0]);
//
// /* Look for slot to put the data into by looking at the tracking ids */
// int index = -1;
// int i;
// for(i = 0; i < 2; i++) {
// if(fingerInfos[i].id == devEvt->detail) {
// index = i;
// break;
// }
// }
//
// /* No slot for this id found, look for free one */
// if(index == -1) {
// for(i = 0; i < 2; i++) {
// if(!fingerInfos[i].slotUsed) {
// /* "Empty" slot, so we can add it. */
// index = i;
// fingerInfos[i].id = devEvt->detail;
// break;
// }
// }
// }
//
// /* We have found a slot */
// if(index != -1) {
// fingerInfos[index].slotUsed = (cookie->evtype != XI_TouchEnd ? 1 : 0);
//
// i = 0;
// if((devEvt->valuators.mask[0] & 1) == 1)
// {
// fingerInfos[index].rawX = (int) devEvt->valuators.values[i++];
// }
// if((devEvt->valuators.mask[0] & 2) == 2)
// {
// fingerInfos[index].rawY = (int) devEvt->valuators.values[i++];
// }
// if((devEvt->valuators.mask[0] & 4) == 4)
// {
// fingerInfos[index].rawZ = (int) devEvt->valuators.values[i++];
// }
// }
//
// processFingers();
//}
XFreeEventData(display, &(ev.xcookie));
} else {
if(ev.type == randrEvBase + RRScreenChangeNotify) {
setScreenSize((XRRScreenChangeNotifyEvent *) &ev);
}
}
}
/* Reads the calibration data from evdev, should be self-explanatory. */
void readCalibrationData(int exitOnFail, char* deviceName) {
if(debugMode) {
printf("Start calibration\n");
}
Atom retType;
int retFormat;
unsigned long retItems, retBytesAfter;
unsigned int* data;
if(XIGetProperty(display, calibrateDeviceID, XInternAtom(display,
"Evdev Axis Calibration", 0), 0, 4 * 32, False, XA_INTEGER,
&retType, &retFormat, &retItems, &retBytesAfter,
(unsigned char**) &data) != Success) {
data = NULL;
}
if (data == NULL || retItems != 4 || data[0] == data[1] || data[2] == data[3]) {
/* evdev might not be ready yet after resume. Let's wait a second and try again. */
sleep(1);
if(XIGetProperty(display, calibrateDeviceID, XInternAtom(display,
"Evdev Axis Calibration", 0), 0, 4 * 32, False, XA_INTEGER,
&retType, &retFormat, &retItems, &retBytesAfter,
(unsigned char**) &data) != Success) {
retItems = 0;
return;
}
if (retItems != 4 || data[0] == data[1] || data[2] == data[3]) {
if(debugMode) {
printf("No calibration data found, use default values.\n");
}
/* Get minimum/maximum of axes */
if (strcmp(deviceName, "ELAN9009:00 04F3:29DE") == 0) {
if(debugMode) {
printf("Using fixed values for ELAN device for now.\n");
}
calibMaxX = 3600;
calibMaxY = 960;
} else {
int nDev;
XIDeviceInfo * deviceInfo = XIQueryDevice(display, calibrateDeviceID, &nDev);
int c;
for(c = 0; c < deviceInfo->num_classes; c++) {
if(deviceInfo->classes[c]->type == XIValuatorClass) {
XIValuatorClassInfo* valuatorInfo = (XIValuatorClassInfo *) deviceInfo->classes[c];
if(valuatorInfo->mode == XIModeAbsolute) {
if(valuatorInfo->label == XInternAtom(display, "Abs X", 0)
|| valuatorInfo->label == XInternAtom(display, "Abs MT Position X", 0))
{
calibMinX = valuatorInfo->min;
calibMaxX = valuatorInfo->max;
}
else if(valuatorInfo->label == XInternAtom(display, "Abs Y", 0)
|| valuatorInfo->label == XInternAtom(display, "Abs MT Position Y", 0))
{
calibMinY = valuatorInfo->min;
calibMaxY = valuatorInfo->max;
}
}
}
}
XIFreeDeviceInfo(deviceInfo);
}
} else {
calibMinX = data[0];
calibMaxX = data[1];
calibMinY = data[2];
calibMaxY = data[3];
}
} else {
calibMinX = data[0];
calibMaxX = data[1];
calibMinY = data[2];
calibMaxY = data[3];
}
if(data != NULL) {
XFree(data);
}
float * data4 = NULL;
if(XIGetProperty(display, calibrateDeviceID, XInternAtom(display,
"Coordinate Transformation Matrix", 0), 0, 9 * 32, False, XInternAtom(display,
"FLOAT", 0),
&retType, &retFormat, &retItems, &retBytesAfter,
(unsigned char **) &data4) != Success) {
data4 = NULL;
}
calibMatrixUse = 0;
if(data4 != NULL && retItems == 9) {
int i;
for(i = 0; i < 6; i++) {
/* We only take the first two rows of the matrix, the rest is unimportant anyway */
calibMatrix[i] = data4[i];
}
calibMatrixUse = 1;
}
if(data4 != NULL) {
XFree(data4);
}
unsigned char* data2;
if(XIGetProperty(display, calibrateDeviceID, XInternAtom(display,
"Evdev Axis Inversion", 0), 0, 2 * 8, False, XA_INTEGER, &retType,
&retFormat, &retItems, &retBytesAfter, (unsigned char**) &data2) != Success) {
retItems = 0;
}
if (retItems != 2) {
if (debugMode) {
printf("No valid axis inversion data found, assuming no inversion.\n");
}
calibSwapX = 0;
calibSwapY = 0;
} else {
calibSwapX = data2[0];
calibSwapY = data2[1];
}
XFree(data2);
if(XIGetProperty(display, calibrateDeviceID,
XInternAtom(display, "Evdev Axes Swap", 0), 0, 8, False,
XA_INTEGER, &retType, &retFormat, &retItems, &retBytesAfter,
(unsigned char**) &data2) != Success) {
retItems = 0;
}
if (retItems != 1) {
if (debugMode)
{
printf("No valid axes swap data found, assuming no swap.\n");
}
calibSwapAxes = 0;
}
else
{
calibSwapAxes = data2[0];
}
XFree(data2);
if(debugMode)
{
printf("Calibration: MinX: %i; MaxX: %i; MinY: %i; MaxY: %i\n", calibMinX, calibMaxX, calibMinY, calibMaxY);
printf("Invert X Axis: %s\n", calibSwapX ? "Yes" : "No");
printf("Invert Y Axis: %s\n", calibSwapY ? "Yes" : "No");
printf("Swap Axes: %s\n", calibSwapAxes ? "Yes" : "No");
if(calibMatrixUse)
{
printf("Calibration Matrix: \t%f\t%f\t%f\n \t%f\t%f\t%f\n", calibMatrix[0], calibMatrix[1], calibMatrix[2], calibMatrix[3], calibMatrix[4], calibMatrix[5]);
}
}
}
int isEasingEnabled()
{
return !moveMouseBackAfterTouches;
}
void * signalThreadFunction(void *arg) {
int sig;
while(1) {
sigwait ( &signalSet, &sig );
/* Trigger update of profile settings */
stopSignalReceived = 1;
return 0;
}
}
/* Main function, contains kernel driver event loop */
int main(int argc, char **argv) {
char* devname = 0;
int doDaemonize = 1;
int doWait = 0;
int clickMode = 2;
int justVersion = 0;
char* blockingDevName = 0;
int i;
for (i = 1; i < argc; i++) {
if (strcmp(argv[i], "--debug") == 0) {
doDaemonize = 0;
debugMode = 1;
} else if (strcmp(argv[i], "--version") == 0) {
justVersion = 1;
} else if (strcmp(argv[i], "--wait") == 0) {
doWait = 1;
} else if (strcmp(argv[i], "--click=first") == 0) {
clickMode = 0;
} else if (strcmp(argv[i], "--click=second") == 0) {
clickMode = 1;
} else if (strcmp(argv[i], "--click=center") == 0) {
clickMode = 2;
} else if (strcmp(argv[i], "--blockingdevice") == 0) {
if(i + 1 < argc) {
blockingDevName = argv[++i];
}
} else if (strcmp(argv[i], "--also-block-twofingers") == 0) {
alsoBlockTwoFingerTouches = 1;
} else if (strcmp(argv[i], "--grab-by-disabling") == 0) {
disableOnGrab = 1;
} else if (strcmp(argv[i], "--blockinginterval") == 0) {
if(i + 1 < argc) {
blockingIntervalMilliseconds = atoi(argv[++i]);
}
} else if (strcmp(argv[i], "--moveback") == 0) {
moveMouseBackAfterTouches = 1;
} else if (strcmp(argv[i], "--screenpad") == 0) {
blockingDevName = "ELAN9009:00 04F3:29DE Pen (0)";
disableOnGrab = 1;
alsoBlockTwoFingerTouches = 1;
moveMouseBackAfterTouches = 1;
} else {
devname = argv[i];
}
}
if(debugMode || justVersion)
{
printf("twofing, the two-fingered daemon\nVersion %s\n\n", VERSION);
}
if(justVersion)
{
return 0;
}
initGestures(clickMode);
if (blockingDevName != 0)
{
lastBlockingInputTime = getCurrentTime();
}
if (doDaemonize) {
daemonize();
}
if (doWait) {
/* Wait until all necessary things are loaded */
sleep(10);
}
/* Connect to X server */
if ((display = XOpenDisplay(NULL)) == NULL) {
fprintf(stderr, "ERROR: Couldn't connect to X server\n");
exit(1);
}
/* Read X data */
screenNum = DefaultScreen(display);
root = RootWindow(display, screenNum);
// realDisplayWidth = DisplayWidth(display, screenNum);
// realDisplayHeight = DisplayHeight(display, screenNum);
WM_CLASS = XInternAtom(display, "WM_CLASS", 0);