1 files changed, 170 insertions, 0 deletions
diff --git a/xbmc/windowing/wayland/InputProcessorKeyboard.cpp b/xbmc/windowing/wayland/InputProcessorKeyboard.cpp
new file mode 100644
index 0000000..37b0240
--- /dev/null
+++ b/xbmc/windowing/wayland/InputProcessorKeyboard.cpp
@@ -0,0 +1,170 @@
+/*
+ *  Copyright (C) 2017-2018 Team Kodi
+ *  This file is part of Kodi - https://kodi.tv
+ *
+ *  SPDX-License-Identifier: GPL-2.0-or-later
+ *  See LICENSES/README.md for more information.
+ */
+
+#include "InputProcessorKeyboard.h"
+
+#include "utils/log.h"
+
+#include <cassert>
+#include <limits>
+
+using namespace KODI::WINDOWING::WAYLAND;
+
+namespace
+{
+// Offset between keyboard codes of Wayland (effectively evdev) and xkb_keycode_t
+constexpr int WL_KEYBOARD_XKB_CODE_OFFSET{8};
+}
+
+CInputProcessorKeyboard::CInputProcessorKeyboard(IInputHandlerKeyboard& handler)
+: m_handler{handler}, m_keyRepeatTimer{std::bind(&CInputProcessorKeyboard::KeyRepeatTimeout, this)}
+{
+}
+
+void CInputProcessorKeyboard::OnKeyboardKeymap(CSeat* seat, wayland::keyboard_keymap_format format, std::string const &keymap)
+{
+ if (format != wayland::keyboard_keymap_format::xkb_v1)
+  {
+    CLog::Log(LOGWARNING,
+              "Wayland compositor sent keymap in format {}, but we only understand xkbv1 - "
+              "keyboard input will not work",
+              static_cast<unsigned int>(format));
+    return;
+  }
+
+  m_keyRepeatTimer.Stop();
+
+  try
+  {
+    if (!m_xkbContext)
+    {
+      // Lazily initialize XkbcommonContext
+      m_xkbContext.reset(new CXkbcommonContext);
+    }
+
+    m_keymap = m_xkbContext->KeymapFromString(keymap);
+  }
+  catch(std::exception const& e)
+  {
+    CLog::Log(LOGERROR, "Could not parse keymap from compositor: {} - continuing without keymap",
+              e.what());
+  }
+}
+
+void CInputProcessorKeyboard::OnKeyboardEnter(CSeat* seat,
+                                              std::uint32_t serial,
+                                              const wayland::surface_t& surface,
+                                              const wayland::array_t& keys)
+{
+  m_handler.OnKeyboardEnter();
+}
+
+void CInputProcessorKeyboard::OnKeyboardLeave(CSeat* seat,
+                                              std::uint32_t serial,
+                                              const wayland::surface_t& surface)
+{
+  m_keyRepeatTimer.Stop();
+  m_handler.OnKeyboardLeave();
+}
+
+void CInputProcessorKeyboard::OnKeyboardKey(CSeat* seat, std::uint32_t serial, std::uint32_t time, std::uint32_t key, wayland::keyboard_key_state state)
+{
+  if (!m_keymap)
+  {
+    CLog::Log(LOGWARNING, "Key event for code {} without valid keymap, ignoring", key);
+    return;
+  }
+
+  ConvertAndSendKey(key, state == wayland::keyboard_key_state::pressed);
+}
+
+void CInputProcessorKeyboard::OnKeyboardModifiers(CSeat* seat, std::uint32_t serial, std::uint32_t modsDepressed, std::uint32_t modsLatched, std::uint32_t modsLocked, std::uint32_t group)
+{
+  if (!m_keymap)
+  {
+    CLog::Log(LOGWARNING, "Modifier event without valid keymap, ignoring");
+    return;
+  }
+
+  m_keyRepeatTimer.Stop();
+  m_keymap->UpdateMask(modsDepressed, modsLatched, modsLocked, group);
+}
+
+void CInputProcessorKeyboard::OnKeyboardRepeatInfo(CSeat* seat, std::int32_t rate, std::int32_t delay)
+{
+  CLog::Log(LOGDEBUG, "Key repeat rate: {} cps, delay {} ms", rate, delay);
+  // rate is in characters per second, so convert to msec interval
+  m_keyRepeatInterval = (rate != 0) ? static_cast<int> (1000.0f / rate) : 0;
+  m_keyRepeatDelay = delay;
+}
+
+void CInputProcessorKeyboard::ConvertAndSendKey(std::uint32_t scancode, bool pressed)
+{
+  std::uint32_t xkbCode{scancode + WL_KEYBOARD_XKB_CODE_OFFSET};
+  XBMCKey xbmcKey{m_keymap->XBMCKeyForKeycode(xkbCode)};
+  std::uint32_t utf32{m_keymap->UnicodeCodepointForKeycode(xkbCode)};
+
+  if (utf32 > std::numeric_limits<std::uint16_t>::max())
+  {
+    // Kodi event system only supports UTF16, so ignore the codepoint if
+    // it does not fit
+    utf32 = 0;
+  }
+  if (scancode > std::numeric_limits<unsigned char>::max())
+  {
+    // Kodi scancodes are limited to unsigned char, pretend the scancode is unknown
+    // on overflow
+    scancode = 0;
+  }
+
+  XBMC_Event event{SendKey(scancode, xbmcKey, static_cast<std::uint16_t> (utf32), pressed)};
+
+  if (pressed && m_keymap->ShouldKeycodeRepeat(xkbCode) && m_keyRepeatInterval > 0)
+  {
+    // Can't modify keyToRepeat until we're sure the thread isn't accessing it
+    m_keyRepeatTimer.Stop(true);
+    // Update/Set key
+    m_keyToRepeat = event;
+    // Start timer with initial delay
+    m_keyRepeatTimer.Start(std::chrono::milliseconds(m_keyRepeatDelay), false);
+  }
+  else
+  {
+    m_keyRepeatTimer.Stop();
+  }
+}
+
+XBMC_Event CInputProcessorKeyboard::SendKey(unsigned char scancode, XBMCKey key, std::uint16_t unicodeCodepoint, bool pressed)
+{
+  assert(m_keymap);
+
+  XBMC_Event event{};
+  event.type = pressed ? XBMC_KEYDOWN : XBMC_KEYUP;
+  event.key.keysym =
+  {
+    .scancode = scancode,
+    .sym = key,
+    .mod = m_keymap->ActiveXBMCModifiers(),
+    .unicode = unicodeCodepoint
+  };
+  m_handler.OnKeyboardEvent(event);
+  // Return created event for convenience (key repeat)
+  return event;
+}
+
+void CInputProcessorKeyboard::KeyRepeatTimeout()
+{
+  // Reset ourselves
+  m_keyRepeatTimer.RestartAsync(std::chrono::milliseconds(m_keyRepeatInterval));
+  // Simulate repeat: Key up and down
+  XBMC_Event event = m_keyToRepeat;
+  event.type = XBMC_KEYUP;
+  m_handler.OnKeyboardEvent(event);
+  event.type = XBMC_KEYDOWN;
+  m_handler.OnKeyboardEvent(event);
+}