Send first hard-coded keys

- send CTRL+ALT+UP for 3 fingers down
- send CTRL+ALT+DOWN for 3 fingers up

Author: Robin Müller

src/gesture_detection.c

@@ -32,7 +32,6 @@
 #include <linux/input.h>
 
 #include "gesture_detection.h"
-#include "input_event_array.h"
 
 typedef struct point {
   int x;
@@ -170,7 +169,7 @@ static int32_t get_axix_threshold(int fd, int axis, uint8_t percentage) {
   return (absinfo.maximum - absinfo.minimum) * percentage / 100;
 }
 
-void process_events(int fd, configuration_t config) {
+void process_events(int fd, configuration_t config, void (*callback)(input_event_array_t*)) {
   struct input_event ev[64];
   int i, rd;
   uint8_t finger_count;
@@ -210,13 +209,7 @@ void process_events(int fd, configuration_t config) {
           break;
         case EV_SYN: {
             input_event_array_t *input_events = process_syn_event(ev[i], config, gesture_start, mt_slots.points, thresholds, &finger_count);
-            int i;
-            for (i = 0; i < input_events->length; i++) {
-              printf("%s%d", i > 0 ? " + " : "", input_events->data[i].code);
-            }
-            if (input_events->length) {
-              printf("\n");
-            }
+            callback(input_events);
             free(input_events);
           }
           break;

src/gesture_detection.h

@@ -26,7 +26,8 @@
 #define GESTURE_DETECTION_H_
 
 #include "configuraion.h"
+#include "input_event_array.h"
 
-void process_events(int fd, configuration_t config);
+void process_events(int fd, configuration_t config, void (*callback)(input_event_array_t*));
 
 #endif // GESTURE_DETECTION_H_

src/gestures_device.c

@@ -27,14 +27,15 @@
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
+#include <stdint.h>
 
 #include <linux/input.h>
 #include <linux/uinput.h>
 
 #include "common.h"
 #include "gestures_device.h"
 
-int init_uinput(int_array_t keys) {
+int init_uinput(int_array_t *keys) {
   int fd = open("/dev/uinput", O_WRONLY | O_NONBLOCK);
   if(fd < 0) {
       die("error: open");
@@ -51,8 +52,8 @@ int init_uinput(int_array_t keys) {
   ioctl(fd, UI_SET_KEYBIT, BTN_MIDDLE);
 
   int i;
-  for (i = 0; i < keys.length; i++) {
-    ioctl(fd, UI_SET_KEYBIT, keys.data[i]);
+  for (i = 0; i < keys->length; i++) {
+    ioctl(fd, UI_SET_KEYBIT, keys->data[i]);
   }
 
   struct uinput_user_dev uidev;
@@ -111,3 +112,35 @@ void send_key(int fd, int key) {
     die("error: write");
   }
 }
+
+void send_events(int fd, input_event_array_t *input_events) {
+  struct input_event syn_ev;
+  uint8_t i;
+  if (input_events->length > 0) {
+    for (i = 0; i < input_events->length; i++) {
+      input_events->data[i].value = 1;
+      if (write(fd, &input_events->data[i], sizeof(struct input_event)) < 0) {
+        die("error: write");
+      }
+    }
+
+    memset(&syn_ev, 0, sizeof(struct input_event));
+    syn_ev.type = EV_SYN;
+    syn_ev.code = SYN_REPORT;
+    syn_ev.value = 0;
+    if (write(fd, &syn_ev, sizeof(struct input_event)) < 0) {
+      die("error: write");
+    }
+
+    for (i = 0; i < input_events->length; i++) {
+      input_events->data[i].value = 0;
+      if (write(fd, &input_events->data[i], sizeof(struct input_event)) < 0) {
+        die("error: write");
+      }
+    }
+
+    if (write(fd, &syn_ev, sizeof(struct input_event)) < 0) {
+      die("error: write");
+    }
+  }
+}

src/gestures_device.h

@@ -26,9 +26,11 @@
 #define GESTURES_DEVICE_H_
 
 #include "int_array.h"
+#include "input_event_array.h"
 
-int init_uinput(int_array_t keys);
+int init_uinput(int_array_t *keys);
 int destroy_uinput(int fd);
 void send_key(int fd, int key);
+void send_events(int fd, input_event_array_t *input_events);
 
 #endif // GESTURES_DEVICE_H_

src/main.c

@@ -35,17 +35,21 @@
 #include "gestures_device.h"
 #include "gesture_detection.h"
 
+int uinput_fd;
+
+static void execute_events(input_event_array_t *input_events) {
+  send_events(uinput_fd, input_events);
+}
 
 int main(int argc, char *argv[]) {
-  int_array_t *keys = new_int_array(1);
-  keys->data[0] = KEY_D;
-  int uinput_fd = init_uinput(*keys);
+  int_array_t *keys = new_int_array(4);
+  keys->data[0] = KEY_LEFTCTRL;
+  keys->data[1] = KEY_LEFTALT;
+  keys->data[2] = KEY_UP;
+  keys->data[3] = KEY_DOWN;
+  uinput_fd = init_uinput(keys);
   free(keys);
 
-//  sleep(1);
-//  send_key(uinput_fd, KEY_D);
-  destroy_uinput(uinput_fd);
-
   if (argc > 1) {
     int fd = open(argv[1], O_RDONLY);
     if (fd < 0) {
@@ -55,10 +59,15 @@ int main(int argc, char *argv[]) {
     clean_config(&config);
     config.horz_threshold_percentage = 15;
     config.vert_threshold_percentage = 15;
-    config.swipe_keys[3][0].keys[0] = KEY_D;
-    config.swipe_keys[3][0].keys[1] = KEY_A;
-    process_events(fd, config);
+    config.swipe_keys[3][UP].keys[0] = KEY_LEFTCTRL;
+    config.swipe_keys[3][UP].keys[1] = KEY_LEFTALT;
+    config.swipe_keys[3][UP].keys[2] = KEY_DOWN;
+    config.swipe_keys[3][DOWN].keys[0] = KEY_LEFTCTRL;
+    config.swipe_keys[3][DOWN].keys[1] = KEY_LEFTALT;
+    config.swipe_keys[3][DOWN].keys[2] = KEY_UP;
+    process_events(fd, config, &execute_events);
     close(fd);
   }
+  destroy_uinput(uinput_fd);
   return 0;
 }