Fixed missing Touchpad

1 files changed, 74 insertions, 0 deletions

diff --git a/Touchpad.cpp b/Touchpad.cpp
new file mode 100644
index 0000000..073fbde
--- /dev/null
+++ b/Touchpad.cpp
@@ -0,0 +1,74 @@
+#include "Touchpad.h"
+
+#include <fmt/format.h>
+#include <sys/poll.h>
+#include <fcntl.h>
+
+#include "log.h"
+
+Touchpad::Touchpad(): m_valid{}
+{
+  m_fd = open("/dev/input/event0", O_RDONLY | O_NONBLOCK);
+  int rc = libevdev_new_from_fd(m_fd, &m_dev);
+  if (rc < 0) {
+    log_cout << fmt::format("Failed to init libevdev ({})\n", strerror(-rc));
+    return;
+  }
+
+  log_cout << fmt::format("Input device name: \"{}\"\n", libevdev_get_name(m_dev));
+  log_cout << fmt::format("Input device ID: bus {:x} vendor {:x} product {:x}\n",
+       libevdev_get_id_bustype(m_dev),
+       libevdev_get_id_vendor(m_dev),
+       libevdev_get_id_product(m_dev));
+  if (!libevdev_has_event_type(m_dev, EV_REL) ||
+      !libevdev_has_event_code(m_dev, EV_KEY, BTN_LEFT) ||
+      !libevdev_has_event_code(m_dev, EV_KEY, BTN_RIGHT)) {
+    log_cout << fmt::format("Not the correct device, ignoring.\n");
+  } else {
+    m_valid = true;
+  }
+}
+
+bool Touchpad::is_valid()
+{
+  return m_valid;
+}
+
+bool Touchpad::event_available()
+{
+  struct pollfd fds{};
+  fds.fd = m_fd;
+  fds.events = POLLIN;
+  int ret = poll(&fds, 1, 0);
+  if (ret == 0)
+    return false;
+  else if (ret == 1)
+    return true;
+  else
+    log_cout << "Error: Touchpad::event_available()" << std::endl;
+  return false;
+}
+
+input_event Touchpad::get_event()
+{
+  input_event ev{};
+  int rc = libevdev_next_event(m_dev, LIBEVDEV_READ_FLAG_NORMAL, &ev);
+  if (rc != 0) {
+    throw std::runtime_error("Touchpad::get_event() couldn't read event");
+  }
+  log_cout << fmt::format("Event: {} {} {}\n",
+                       libevdev_event_type_get_name(ev.type),
+                       libevdev_event_code_get_name(ev.type, ev.code),
+                       ev.value);
+  return ev;
+}
+
+bool Touchpad::event_is_button1(const input_event& ev)
+{
+  return ev.type == EV_KEY && ev.code == BTN_LEFT;
+}
+
+bool Touchpad::event_is_button2(const input_event& ev)
+{
+  return ev.type == EV_KEY && ev.code == BTN_RIGHT;
+}