src/ozone/wayland/input/touchscreen.cc

   1 // Copyright (c) 2014 Noser Engineering AG. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "ozone/wayland/input/touchscreen.h"
   6
   7 #include <linux/input.h>
   8
   9 #include "ozone/ui/events/event_factory_ozone_wayland.h"
  10 #include "ozone/wayland/input/cursor.h"
  11 #include "ozone/wayland/input_device.h"
  12 #include "ozone/wayland/window.h"
  13 #include "ui/events/event.h"
  14
  15 namespace ozonewayland {
  16
  17 WaylandTouchscreen::WaylandTouchscreen()
  18   : dispatcher_(NULL),
  19     pointer_position_(0, 0),
  20     wl_touch_(NULL) {
  21 }
  22
  23 WaylandTouchscreen::~WaylandTouchscreen() {
  24   if (wl_touch_)
  25     wl_touch_destroy(wl_touch_);
  26 }
  27
  28 void WaylandTouchscreen::OnSeatCapabilities(wl_seat *seat, uint32_t caps) {
  29   static const struct wl_touch_listener kInputTouchListener = {
  30     WaylandTouchscreen::OnTouchDown,
  31     WaylandTouchscreen::OnTouchUp,
  32     WaylandTouchscreen::OnTouchMotion,
  33     WaylandTouchscreen::OnTouchFrame,
  34     WaylandTouchscreen::OnTouchCancel,
  35   };
  36
  37   dispatcher_ = ui::EventFactoryOzoneWayland::GetInstance()->EventConverter();
  38
  39   if ((caps & WL_SEAT_CAPABILITY_TOUCH)) {
  40     wl_touch_ = wl_seat_get_touch(seat);
  41     wl_touch_set_user_data(wl_touch_, this);
  42     wl_touch_add_listener(wl_touch_, &kInputTouchListener, this);
  43   }
  44 }
  45
  46 void WaylandTouchscreen::OnTouchDown(void *data,
  47                                      struct wl_touch *wl_touch,
  48                                      uint32_t serial,
  49                                      uint32_t time,
  50                                      struct wl_surface *surface,
  51                                      int32_t id,
  52                                      wl_fixed_t x,
  53                                      wl_fixed_t y) {
  54   WaylandTouchscreen* device = static_cast<WaylandTouchscreen*>(data);
  55   WaylandDisplay::GetInstance()->SetSerial(serial);
  56   WaylandInputDevice* input = WaylandDisplay::GetInstance()->PrimaryInput();
  57   if (input->GetFocusWindowHandle() && input->GetGrabButton() == 0)
  58     input->SetGrabWindowHandle(input->GetFocusWindowHandle(), id);
  59
  60   float sx = wl_fixed_to_double(x);
  61   float sy = wl_fixed_to_double(y);
  62
  63   device->pointer_position_.SetPoint(sx, sy);
  64
  65   device->dispatcher_->TouchNotify(ui::ET_TOUCH_PRESSED, sx, sy, id, time);
  66 }
  67
  68 void WaylandTouchscreen::OnTouchUp(void *data,
  69                                    struct wl_touch *wl_touch,
  70                                    uint32_t serial,
  71                                    uint32_t time,
  72                                    int32_t id) {
  73   WaylandTouchscreen* device = static_cast<WaylandTouchscreen*>(data);
  74   WaylandDisplay::GetInstance()->SetSerial(serial);
  75   WaylandInputDevice* input = WaylandDisplay::GetInstance()->PrimaryInput();
  76
  77   device->dispatcher_->TouchNotify(ui::ET_TOUCH_RELEASED,
  78                                    device->pointer_position_.x(),
  79                                    device->pointer_position_.y(), id, time);
  80
  81   if (input->GetGrabWindowHandle() && input->GetGrabButton() == id)
  82     input->SetGrabWindowHandle(0, 0);
  83 }
  84
  85 void WaylandTouchscreen::OnTouchMotion(void *data,
  86                                       struct wl_touch *wl_touch,
  87                                       uint32_t time,
  88                                       int32_t id,
  89                                       wl_fixed_t x,
  90                                       wl_fixed_t y) {
  91   WaylandTouchscreen* device = static_cast<WaylandTouchscreen*>(data);
  92   WaylandInputDevice* input = WaylandDisplay::GetInstance()->PrimaryInput();
  93   float sx = wl_fixed_to_double(x);
  94   float sy = wl_fixed_to_double(y);
  95
  96   device->pointer_position_.SetPoint(sx, sy);
  97
  98   if (input->GetGrabWindowHandle() &&
  99     input->GetGrabWindowHandle() != input->GetFocusWindowHandle()) {
 100     return;
 101   }
 102
 103   device->dispatcher_->TouchNotify(ui::ET_TOUCH_MOVED, sx, sy, id, time);
 104 }
 105
 106 void WaylandTouchscreen::OnTouchFrame(void *data,
 107                                       struct wl_touch *wl_touch) {
 108   // TODO(speedpat): find out what should be done here
 109 }
 110
 111 void WaylandTouchscreen::OnTouchCancel(void *data,
 112                                        struct wl_touch *wl_touch) {
 113   WaylandTouchscreen* device = static_cast<WaylandTouchscreen*>(data);
 114   WaylandInputDevice* input = WaylandDisplay::GetInstance()->PrimaryInput();
 115
 116   device->dispatcher_->TouchNotify(ui::ET_TOUCH_CANCELLED,
 117                                    device->pointer_position_.x(),
 118                                    device->pointer_position_.y(),
 119                                    input->GetGrabButton(),
 120                                    0);
 121
 122   if (input->GetGrabWindowHandle() && input->GetGrabButton() != 0)
 123     input->SetGrabWindowHandle(0, 0);
 124 }
 125
 126 }  // namespace ozonewayland