wlf_input.c

 
#include <stdlib.h>
#include <float.h>
 
#include <linux/input.h>
 
#include <winpr/assert.h>
#include <winpr/cast.h>
 
#include <freerdp/config.h>
#include <freerdp/locale/keyboard.h>
#if defined(CHANNEL_RDPEI_CLIENT)
#include <freerdp/client/rdpei.h>
#endif
#include <uwac/uwac.h>
 
#include "wlfreerdp.h"
#include "wlf_input.h"
 
static BOOL scale_signed_coordinates(rdpContext* context, int32_t* x, int32_t* y,
                                     BOOL fromLocalToRDP)
{
  BOOL rc = 0;
  UINT32 ux = 0;
  UINT32 uy = 0;
  WINPR_ASSERT(context);
  WINPR_ASSERT(x);
  WINPR_ASSERT(y);
  WINPR_ASSERT(*x >= 0);
  WINPR_ASSERT(*y >= 0);
 
  ux = (UINT32)*x;
  uy = (UINT32)*y;
  rc = wlf_scale_coordinates(context, &ux, &uy, fromLocalToRDP);
  WINPR_ASSERT(ux < INT32_MAX);
  WINPR_ASSERT(uy < INT32_MAX);
  *x = (int32_t)ux;
  *y = (int32_t)uy;
  return rc;
}
 
BOOL wlf_handle_pointer_enter(freerdp* instance, const UwacPointerEnterLeaveEvent* ev)
{
  uint32_t x = 0;
  uint32_t y = 0;
  rdpClientContext* cctx = NULL;
 
  if (!instance || !ev)
    return FALSE;
 
  x = ev->x;
  y = ev->y;
 
  if (!wlf_scale_coordinates(instance->context, &x, &y, TRUE))
    return FALSE;
 
  cctx = (rdpClientContext*)instance->context;
  return freerdp_client_send_button_event(cctx, FALSE, PTR_FLAGS_MOVE,
                                          WINPR_ASSERTING_INT_CAST(int, x),
                                          WINPR_ASSERTING_INT_CAST(int, y));
}
 
BOOL wlf_handle_pointer_motion(freerdp* instance, const UwacPointerMotionEvent* ev)
{
  rdpClientContext* cctx = NULL;
 
  if (!instance || !ev)
    return FALSE;
 
  cctx = (rdpClientContext*)instance->context;
  WINPR_ASSERT(cctx);
 
  uint32_t x = ev->x;
  uint32_t y = ev->y;
 
  if (!wlf_scale_coordinates(instance->context, &x, &y, TRUE))
    return FALSE;
 
  return freerdp_client_send_button_event(cctx, FALSE, PTR_FLAGS_MOVE,
                                          WINPR_ASSERTING_INT_CAST(int32_t, x),
                                          WINPR_ASSERTING_INT_CAST(int32_t, y));
}
 
BOOL wlf_handle_pointer_buttons(freerdp* instance, const UwacPointerButtonEvent* ev)
{
  rdpClientContext* cctx = NULL;
  UINT16 flags = 0;
  UINT16 xflags = 0;
 
  if (!instance || !ev)
    return FALSE;
 
  cctx = (rdpClientContext*)instance->context;
  WINPR_ASSERT(cctx);
 
  uint32_t x = ev->x;
  uint32_t y = ev->y;
 
  if (!wlf_scale_coordinates(instance->context, &x, &y, TRUE))
    return FALSE;
 
  if (ev->state == WL_POINTER_BUTTON_STATE_PRESSED)
  {
    flags |= PTR_FLAGS_DOWN;
    xflags |= PTR_XFLAGS_DOWN;
  }
 
  switch (ev->button)
  {
    case BTN_LEFT:
      flags |= PTR_FLAGS_BUTTON1;
      break;
 
    case BTN_RIGHT:
      flags |= PTR_FLAGS_BUTTON2;
      break;
 
    case BTN_MIDDLE:
      flags |= PTR_FLAGS_BUTTON3;
      break;
 
    case BTN_SIDE:
      xflags |= PTR_XFLAGS_BUTTON1;
      break;
 
    case BTN_EXTRA:
      xflags |= PTR_XFLAGS_BUTTON2;
      break;
 
    default:
      return TRUE;
  }
 
  const INT32 cx = WINPR_ASSERTING_INT_CAST(int32_t, x);
  const INT32 cy = WINPR_ASSERTING_INT_CAST(int32_t, y);
 
  if ((flags & ~PTR_FLAGS_DOWN) != 0)
    return freerdp_client_send_button_event(cctx, FALSE, flags, cx, cy);
 
  if ((xflags & ~PTR_XFLAGS_DOWN) != 0)
    return freerdp_client_send_extended_button_event(cctx, FALSE, xflags, cx, cy);
 
  return FALSE;
}
 
BOOL wlf_handle_pointer_axis(freerdp* instance, const UwacPointerAxisEvent* ev)
{
  wlfContext* context = NULL;
  if (!instance || !instance->context || !ev)
    return FALSE;
 
  context = (wlfContext*)instance->context;
  return ArrayList_Append(context->events, ev);
}
 
BOOL wlf_handle_pointer_axis_discrete(freerdp* instance, const UwacPointerAxisEvent* ev)
{
  wlfContext* context = NULL;
  if (!instance || !instance->context || !ev)
    return FALSE;
 
  context = (wlfContext*)instance->context;
  return ArrayList_Append(context->events, ev);
}
 
static BOOL wlf_handle_wheel(freerdp* instance, uint32_t x, uint32_t y, uint32_t axis,
                             int32_t value)
{
  rdpClientContext* cctx = NULL;
  UINT16 flags = 0;
  int32_t direction = 0;
  uint32_t avalue = (uint32_t)abs(value);
 
  WINPR_ASSERT(instance);
 
  cctx = (rdpClientContext*)instance->context;
  WINPR_ASSERT(cctx);
 
  if (!wlf_scale_coordinates(instance->context, &x, &y, TRUE))
    return FALSE;
 
  direction = value;
  switch (axis)
  {
    case WL_POINTER_AXIS_VERTICAL_SCROLL:
      flags |= PTR_FLAGS_WHEEL;
      if (direction > 0)
        flags |= PTR_FLAGS_WHEEL_NEGATIVE;
      break;
 
    case WL_POINTER_AXIS_HORIZONTAL_SCROLL:
      flags |= PTR_FLAGS_HWHEEL;
      if (direction < 0)
        flags |= PTR_FLAGS_WHEEL_NEGATIVE;
      break;
 
    default:
      return FALSE;
  }
 
  /* Wheel rotation steps:
   *
   * positive: 0 ... 0xFF  -> slow ... fast
   * negative: 0 ... 0xFF  -> fast ... slow
   */
 
  while (avalue > 0)
  {
    const UINT16 cval = (avalue > 0xFF) ? 0xFF : (UINT16)avalue;
    UINT16 cflags = flags | cval;
    /* Convert negative values to 9bit twos complement */
    if (flags & PTR_FLAGS_WHEEL_NEGATIVE)
      cflags = (flags & 0xFF00) | (0x100 - cval);
    if (!freerdp_client_send_wheel_event(cctx, cflags))
      return FALSE;
 
    avalue -= cval;
  }
  return TRUE;
}
 
BOOL wlf_handle_pointer_frame(freerdp* instance, const UwacPointerFrameEvent* ev)
{
  BOOL success = TRUE;
  BOOL handle = FALSE;
  wlfContext* context = NULL;
  enum wl_pointer_axis_source source = WL_POINTER_AXIS_SOURCE_CONTINUOUS;
 
  if (!instance || !ev || !instance->context)
    return FALSE;
 
  context = (wlfContext*)instance->context;
 
  for (size_t x = 0; x < ArrayList_Count(context->events); x++)
  {
    UwacEvent* cev = ArrayList_GetItem(context->events, x);
    if (!cev)
      continue;
    if (cev->type == UWAC_EVENT_POINTER_SOURCE)
    {
      handle = TRUE;
      source = cev->mouse_source.axis_source;
    }
  }
 
  /* We need source events to determine how to interpret the data */
  if (handle)
  {
    for (size_t x = 0; x < ArrayList_Count(context->events); x++)
    {
      UwacEvent* cev = ArrayList_GetItem(context->events, x);
      if (!cev)
        continue;
 
      switch (source)
      {
        /* If we have a mouse wheel, just use discrete data */
        case WL_POINTER_AXIS_SOURCE_WHEEL:
#if defined(WL_POINTER_AXIS_SOURCE_WHEEL_TILT_SINCE_VERSION)
        case WL_POINTER_AXIS_SOURCE_WHEEL_TILT:
#endif
          if (cev->type == UWAC_EVENT_POINTER_AXIS_DISCRETE)
          {
            /* Get the number of steps, multiply by default step width of 120 */
            int32_t val = cev->mouse_axis.value * 0x78;
            /* No wheel event received, success! */
            if (!wlf_handle_wheel(instance, cev->mouse_axis.x, cev->mouse_axis.y,
                                  cev->mouse_axis.axis, val))
              success = FALSE;
          }
          break;
          /* If we have a touch pad we get actual data, scale */
        case WL_POINTER_AXIS_SOURCE_FINGER:
        case WL_POINTER_AXIS_SOURCE_CONTINUOUS:
          if (cev->type == UWAC_EVENT_POINTER_AXIS)
          {
            double dval = wl_fixed_to_double(cev->mouse_axis.value);
            int32_t val = (int32_t)(dval * 0x78 / 10.0);
            if (!wlf_handle_wheel(instance, cev->mouse_axis.x, cev->mouse_axis.y,
                                  cev->mouse_axis.axis, val))
              success = FALSE;
          }
          break;
        default:
          break;
      }
    }
  }
  ArrayList_Clear(context->events);
  return success;
}
 
BOOL wlf_handle_pointer_source(freerdp* instance, const UwacPointerSourceEvent* ev)
{
  wlfContext* context = NULL;
  if (!instance || !instance->context || !ev)
    return FALSE;
 
  context = (wlfContext*)instance->context;
  return ArrayList_Append(context->events, ev);
}
 
BOOL wlf_handle_key(freerdp* instance, const UwacKeyEvent* ev)
{
  if (!instance || !ev)
    return FALSE;
 
  WINPR_ASSERT(instance->context);
  wlfContext* ctx = (wlfContext*)instance->context;
  if (freerdp_settings_get_bool(instance->context->settings, FreeRDP_GrabKeyboard) &&
      ev->raw_key == KEY_RIGHTCTRL)
    wlf_handle_ungrab_key(instance, ev);
 
  rdpInput* input = instance->context->input;
 
  const DWORD vc = GetVirtualKeyCodeFromKeycode(ev->raw_key, WINPR_KEYCODE_TYPE_EVDEV);
  const DWORD sc = GetVirtualScanCodeFromVirtualKeyCode(vc, WINPR_KBD_TYPE_IBM_ENHANCED);
  const DWORD rdp_scancode = freerdp_keyboard_remap_key(ctx->remap_table, sc);
 
  if (rdp_scancode == RDP_SCANCODE_UNKNOWN)
    return TRUE;
 
  return freerdp_input_send_keyboard_event_ex(input, ev->pressed, ev->repeated, rdp_scancode);
}
 
BOOL wlf_handle_ungrab_key(freerdp* instance, const UwacKeyEvent* ev)
{
  wlfContext* context = NULL;
  if (!instance || !instance->context || !ev)
    return FALSE;
 
  context = (wlfContext*)instance->context;
 
  return UwacSeatInhibitShortcuts(context->seat, false) == UWAC_SUCCESS;
}
 
BOOL wlf_keyboard_enter(freerdp* instance, const UwacKeyboardEnterLeaveEvent* ev)
{
  if (!instance || !ev)
    return FALSE;
 
  ((wlfContext*)instance->context)->focusing = TRUE;
  return TRUE;
}
 
BOOL wlf_keyboard_modifiers(freerdp* instance, const UwacKeyboardModifiersEvent* ev)
{
  rdpInput* input = NULL;
  UINT16 syncFlags = 0;
  wlfContext* wlf = NULL;
 
  if (!instance || !ev)
    return FALSE;
 
  wlf = (wlfContext*)instance->context;
  WINPR_ASSERT(wlf);
 
  input = instance->context->input;
  WINPR_ASSERT(input);
 
  syncFlags = 0;
 
  if (ev->modifiers & UWAC_MOD_CAPS_MASK)
    syncFlags |= KBD_SYNC_CAPS_LOCK;
  if (ev->modifiers & UWAC_MOD_NUM_MASK)
    syncFlags |= KBD_SYNC_NUM_LOCK;
 
  if (!wlf->focusing)
    return TRUE;
 
  ((wlfContext*)instance->context)->focusing = FALSE;
 
  return freerdp_input_send_focus_in_event(input, syncFlags) &&
         freerdp_client_send_button_event(&wlf->common, FALSE, PTR_FLAGS_MOVE, 0, 0);
}
 
BOOL wlf_handle_touch_up(freerdp* instance, const UwacTouchUp* ev)
{
  int32_t x = 0;
  int32_t y = 0;
 
  WINPR_ASSERT(instance);
  WINPR_ASSERT(ev);
 
  wlfContext* wlf = (wlfContext*)instance->context;
  WINPR_ASSERT(wlf);
 
  x = ev->x;
  y = ev->y;
 
  if (!scale_signed_coordinates(instance->context, &x, &y, TRUE))
    return FALSE;
 
  return freerdp_client_handle_touch(&wlf->common, FREERDP_TOUCH_UP, ev->id, 0, x, y);
}
 
BOOL wlf_handle_touch_down(freerdp* instance, const UwacTouchDown* ev)
{
  int32_t x = 0;
  int32_t y = 0;
 
  WINPR_ASSERT(instance);
  WINPR_ASSERT(ev);
 
  wlfContext* wlf = (wlfContext*)instance->context;
  WINPR_ASSERT(wlf);
 
  x = ev->x;
  y = ev->y;
 
  if (!scale_signed_coordinates(instance->context, &x, &y, TRUE))
    return FALSE;
 
  return freerdp_client_handle_touch(&wlf->common, FREERDP_TOUCH_DOWN, ev->id, 0, x, y);
}
 
BOOL wlf_handle_touch_motion(freerdp* instance, const UwacTouchMotion* ev)
{
  int32_t x = 0;
  int32_t y = 0;
 
  WINPR_ASSERT(instance);
  WINPR_ASSERT(ev);
 
  wlfContext* wlf = (wlfContext*)instance->context;
  WINPR_ASSERT(wlf);
 
  x = ev->x;
  y = ev->y;
 
  if (!scale_signed_coordinates(instance->context, &x, &y, TRUE))
    return FALSE;
 
  return freerdp_client_handle_touch(&wlf->common, FREERDP_TOUCH_MOTION, 0,
                                     WINPR_ASSERTING_INT_CAST(uint32_t, ev->id), x, y);
}