1 files changed, 275 insertions, 0 deletions
diff --git a/xbmc/windowing/wayland/Seat.cpp b/xbmc/windowing/wayland/Seat.cpp
new file mode 100644
index 0000000..56709b3
--- /dev/null
+++ b/xbmc/windowing/wayland/Seat.cpp
@@ -0,0 +1,275 @@
+/*
+ *  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 "Seat.h"
+
+#include "utils/log.h"
+
+#include "platform/posix/utils/FileHandle.h"
+#include "platform/posix/utils/Mmap.h"
+
+#include <cassert>
+#include <utility>
+
+#include <unistd.h>
+
+using namespace KODI::WINDOWING::WAYLAND;
+using namespace std::placeholders;
+
+namespace
+{
+
+/**
+ * Handle change of availability of a wl_seat input capability
+ *
+ * This checks whether the capability is currently available with the wl_seat
+ * and whether it was bound to a protocol object. If there is a mismatch between
+ * these two, the protocol proxy is released if a capability was removed or bound
+ * if a capability was added.
+ *
+ * \param caps new capabilities
+ * \param cap capability to check for
+ * \param seatName human-readable name of the seat for log messages
+ * \param capName human-readable name of the capability for log messages
+ * \param proxy proxy object that should be filled with a new instance or reset
+ * \param instanceProvider function that functions as factory for the Wayland
+ *                         protocol instance if the capability has been added
+ */
+template<typename T, typename InstanceProviderT>
+bool HandleCapabilityChange(const wayland::seat_capability& caps,
+                            const wayland::seat_capability& cap,
+                            std::string const& seatName,
+                            std::string const& capName,
+                            T& proxy,
+                            InstanceProviderT instanceProvider)
+{
+  bool hasCapability = caps & cap;
+
+  if ((!!proxy) != hasCapability)
+  {
+    // Capability changed
+
+    if (hasCapability)
+    {
+      // The capability was added
+      CLog::Log(LOGDEBUG, "Wayland seat {} gained capability {}", seatName, capName);
+      proxy = instanceProvider();
+      return true;
+    }
+    else
+    {
+      // The capability was removed
+      CLog::Log(LOGDEBUG, "Wayland seat {} lost capability {}", seatName, capName);
+      proxy.proxy_release();
+    }
+  }
+
+  return false;
+}
+
+}
+
+CSeat::CSeat(std::uint32_t globalName, wayland::seat_t const& seat, CConnection& connection)
+: m_globalName{globalName}, m_seat{seat}, m_selection{connection, seat}
+{
+  m_seat.on_name() = [this](std::string name) { m_name = std::move(name); };
+  m_seat.on_capabilities() = std::bind(&CSeat::HandleOnCapabilities, this, std::placeholders::_1);
+}
+
+CSeat::~CSeat() noexcept = default;
+
+void CSeat::AddRawInputHandlerKeyboard(KODI::WINDOWING::WAYLAND::IRawInputHandlerKeyboard *rawKeyboardHandler)
+{
+  assert(rawKeyboardHandler);
+  m_rawKeyboardHandlers.emplace(rawKeyboardHandler);
+}
+
+void CSeat::RemoveRawInputHandlerKeyboard(KODI::WINDOWING::WAYLAND::IRawInputHandlerKeyboard *rawKeyboardHandler)
+{
+  m_rawKeyboardHandlers.erase(rawKeyboardHandler);
+}
+
+void CSeat::AddRawInputHandlerPointer(IRawInputHandlerPointer* rawPointerHandler)
+{
+  assert(rawPointerHandler);
+  m_rawPointerHandlers.emplace(rawPointerHandler);
+}
+
+void CSeat::RemoveRawInputHandlerPointer(KODI::WINDOWING::WAYLAND::IRawInputHandlerPointer *rawPointerHandler)
+{
+  m_rawPointerHandlers.erase(rawPointerHandler);
+}
+
+void CSeat::AddRawInputHandlerTouch(IRawInputHandlerTouch* rawTouchHandler)
+{
+  assert(rawTouchHandler);
+  m_rawTouchHandlers.emplace(rawTouchHandler);
+}
+
+void CSeat::RemoveRawInputHandlerTouch(KODI::WINDOWING::WAYLAND::IRawInputHandlerTouch *rawTouchHandler)
+{
+  m_rawTouchHandlers.erase(rawTouchHandler);
+}
+
+void CSeat::HandleOnCapabilities(const wayland::seat_capability& caps)
+{
+  if (HandleCapabilityChange(caps, wayland::seat_capability::keyboard, GetName(), "keyboard", m_keyboard, std::bind(&wayland::seat_t::get_keyboard, m_seat)))
+  {
+    HandleKeyboardCapability();
+  }
+  if (HandleCapabilityChange(caps, wayland::seat_capability::pointer, GetName(), "pointer", m_pointer, std::bind(&wayland::seat_t::get_pointer, m_seat)))
+  {
+    HandlePointerCapability();
+  }
+  if (HandleCapabilityChange(caps, wayland::seat_capability::touch, GetName(), "touch", m_touch, std::bind(&wayland::seat_t::get_touch, m_seat)))
+  {
+    HandleTouchCapability();
+  }
+}
+
+void CSeat::SetCursor(std::uint32_t serial, wayland::surface_t const &surface, std::int32_t hotspotX, std::int32_t hotspotY)
+{
+  if (m_pointer)
+  {
+    m_pointer.set_cursor(serial, surface, hotspotX, hotspotY);
+  }
+}
+
+void CSeat::HandleKeyboardCapability()
+{
+  m_keyboard.on_keymap() = [this](wayland::keyboard_keymap_format format, int fd, std::uint32_t size)
+  {
+    KODI::UTILS::POSIX::CFileHandle fdGuard{fd};
+    KODI::UTILS::POSIX::CMmap mmap{nullptr, size, PROT_READ, MAP_PRIVATE, fd, 0};
+    std::string keymap{static_cast<const char*> (mmap.Data()), size};
+    for (auto handler : m_rawKeyboardHandlers)
+    {
+      handler->OnKeyboardKeymap(this, format, keymap);
+    }
+  };
+  m_keyboard.on_enter() = [this](std::uint32_t serial, const wayland::surface_t& surface,
+                                 const wayland::array_t& keys) {
+    for (auto handler : m_rawKeyboardHandlers)
+    {
+      handler->OnKeyboardEnter(this, serial, surface, keys);
+    }
+  };
+  m_keyboard.on_leave() = [this](std::uint32_t serial, const wayland::surface_t& surface) {
+    for (auto handler : m_rawKeyboardHandlers)
+    {
+      handler->OnKeyboardLeave(this, serial, surface);
+    }
+  };
+  m_keyboard.on_key() = [this](std::uint32_t serial, std::uint32_t time, std::uint32_t key, wayland::keyboard_key_state state)
+  {
+    for (auto handler : m_rawKeyboardHandlers)
+    {
+      handler->OnKeyboardKey(this, serial, time, key, state);
+    }
+  };
+  m_keyboard.on_modifiers() = [this](std::uint32_t serial, std::uint32_t modsDepressed, std::uint32_t modsLatched, std::uint32_t modsLocked, std::uint32_t group)
+  {
+    for (auto handler : m_rawKeyboardHandlers)
+    {
+      handler->OnKeyboardModifiers(this, serial, modsDepressed, modsLatched, modsLocked, group);
+    }
+  };
+  m_keyboard.on_repeat_info() = [this](std::int32_t rate, std::int32_t delay)
+  {
+    for (auto handler : m_rawKeyboardHandlers)
+    {
+      handler->OnKeyboardRepeatInfo(this, rate, delay);
+    }
+  };
+}
+
+
+void CSeat::HandlePointerCapability()
+{
+  m_pointer.on_enter() = [this](std::uint32_t serial, const wayland::surface_t& surface,
+                                double surfaceX, double surfaceY) {
+    for (auto handler : m_rawPointerHandlers)
+    {
+      handler->OnPointerEnter(this, serial, surface, surfaceX, surfaceY);
+    }
+  };
+  m_pointer.on_leave() = [this](std::uint32_t serial, const wayland::surface_t& surface) {
+    for (auto handler : m_rawPointerHandlers)
+    {
+      handler->OnPointerLeave(this, serial, surface);
+    }
+  };
+  m_pointer.on_motion() = [this](std::uint32_t time, double surfaceX, double surfaceY)
+  {
+    for (auto handler : m_rawPointerHandlers)
+    {
+      handler->OnPointerMotion(this, time, surfaceX, surfaceY);
+    }
+  };
+  m_pointer.on_button() = [this](std::uint32_t serial, std::uint32_t time, std::uint32_t button, wayland::pointer_button_state state)
+  {
+    for (auto handler : m_rawPointerHandlers)
+    {
+      handler->OnPointerButton(this, serial, time, button, state);
+    }
+  };
+  m_pointer.on_axis() = [this](std::uint32_t time, wayland::pointer_axis axis, double value)
+  {
+    for (auto handler : m_rawPointerHandlers)
+    {
+      handler->OnPointerAxis(this, time, axis, value);
+    }
+  };
+  // Wayland groups pointer events, but right now there is no benefit in
+  // treating them in groups. The main use case for doing so seems to be
+  // multi-axis (i.e. diagonal) scrolling, but we do not support this anyway.
+  /*m_pointer.on_frame() = [this]()
+  {
+
+  };*/
+}
+
+void CSeat::HandleTouchCapability()
+{
+  m_touch.on_down() = [this](std::uint32_t serial, std::uint32_t time,
+                             const wayland::surface_t& surface, std::int32_t id, double x,
+                             double y) {
+    for (auto handler : m_rawTouchHandlers)
+    {
+      handler->OnTouchDown(this, serial, time, surface, id, x, y);
+    }
+  };
+  m_touch.on_up() = [this](std::uint32_t serial, std::uint32_t time, std::int32_t id)
+  {
+    for (auto handler : m_rawTouchHandlers)
+    {
+      handler->OnTouchUp(this, serial, time, id);
+    }
+  };
+  m_touch.on_motion() = [this](std::uint32_t time, std::int32_t id, double x, double y)
+  {
+    for (auto handler : m_rawTouchHandlers)
+    {
+      handler->OnTouchMotion(this, time, id, x, y);
+    }
+  };
+  m_touch.on_cancel() = [this]()
+  {
+    for (auto handler : m_rawTouchHandlers)
+    {
+      handler->OnTouchCancel(this);
+    }
+  };
+  m_touch.on_shape() = [this](std::int32_t id, double major, double minor)
+  {
+    for (auto handler : m_rawTouchHandlers)
+    {
+      handler->OnTouchShape(this, id, major, minor);
+    }
+  };
+}