xbmc/windowing/wayland/InputProcessorTouch.h

   1 /*
   2  *  Copyright (C) 2017-2018 Team Kodi
   3  *  This file is part of Kodi - https://kodi.tv
   4  *
   5  *  SPDX-License-Identifier: GPL-2.0-or-later
   6  *  See LICENSES/README.md for more information.
   7  */
   8
   9 #pragma once
  10
  11 #include "Seat.h"
  12 #include "input/touch/ITouchInputHandler.h"
  13
  14 #include <cstdint>
  15 #include <map>
  16
  17 #include <wayland-client-protocol.hpp>
  18
  19 namespace KODI
  20 {
  21 namespace WINDOWING
  22 {
  23 namespace WAYLAND
  24 {
  25
  26 /**
  27  * Touch input processor
  28  *
  29  * Events go directly to \ref CGenericTouchInputHandler, so no callbacks here
  30  */
  31 class CInputProcessorTouch final : public IRawInputHandlerTouch
  32 {
  33 public:
  34   CInputProcessorTouch(wayland::surface_t const& surface);
  35   ~CInputProcessorTouch() noexcept;
  36   void SetCoordinateScale(std::int32_t scale) { m_coordinateScale = scale; }
  37
  38   void OnTouchDown(CSeat* seat,
  39                    std::uint32_t serial,
  40                    std::uint32_t time,
  41                    const wayland::surface_t& surface,
  42                    std::int32_t id,
  43                    double x,
  44                    double y) override;
  45   void OnTouchUp(CSeat* seat, std::uint32_t serial, std::uint32_t time, std::int32_t id) override;
  46   void OnTouchMotion(CSeat* seat, std::uint32_t time, std::int32_t id, double x, double y) override;
  47   void OnTouchCancel(CSeat* seat) override;
  48   void OnTouchShape(CSeat* seat, std::int32_t id, double major, double minor) override;
  49
  50 private:
  51   CInputProcessorTouch(CInputProcessorTouch const& other) = delete;
  52   CInputProcessorTouch& operator=(CInputProcessorTouch const& other) = delete;
  53
  54   struct TouchPoint
  55   {
  56     std::uint32_t lastEventTime;
  57     /// Pointer number passed to \ref ITouchInputHandler
  58     std::int32_t kodiPointerNumber;
  59     /**
  60      * Last coordinates - needed for TouchInputUp events where Wayland does not
  61      * send new coordinates but Kodi needs them anyway
  62      */
  63     float x, y, size;
  64     TouchPoint(std::uint32_t initialEventTime, std::int32_t kodiPointerNumber, float x, float y, float size)
  65     : lastEventTime{initialEventTime}, kodiPointerNumber{kodiPointerNumber}, x{x}, y{y}, size{size}
  66     {}
  67   };
  68
  69   void SendTouchPointEvent(TouchInput event, TouchPoint const& point);
  70   void UpdateTouchPoint(TouchPoint const& point);
  71   void AbortTouches();
  72
  73   wayland::surface_t m_surface;
  74   std::int32_t m_coordinateScale{1};
  75
  76   /// Map of wl_touch point id to data
  77   std::map<std::int32_t, TouchPoint> m_touchPoints;
  78 };
  79
  80 }
  81 }
  82 }