Event handling support for ozone.

ui/base/ozone/touch_event_converter_ozone_unittest.cc

+// Copyright (c) 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include <errno.h>
+#include <fcntl.h>
+#include <linux/input.h>
+#include <unistd.h>
+
+#include <vector>
+
+#include "base/memory/scoped_ptr.h"
+#include "base/memory/scoped_vector.h"
+#include "base/message_loop.h"
+#include "base/posix/eintr_wrapper.h"
+#include "base/run_loop.h"
+#include "base/time.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "ui/base/events/event.h"
+#include "ui/base/ozone/touch_event_converter_ozone.h"
+
+
+namespace {
+
+static int SetNonBlocking(int fd) {
+  int flags = fcntl(fd, F_GETFL, 0);
+  if (flags == -1)
+    flags = 0;
+  return fcntl(fd, F_SETFL, flags | O_NONBLOCK);
+}
+
+}  // namespace
+
+namespace ui {
+
+class MockTouchEventConverterOzone : public TouchEventConverterOzone,
+                                     public MessageLoop::Dispatcher {
+ public:
+  MockTouchEventConverterOzone(int a, int b);
+  ~MockTouchEventConverterOzone() {};
+
+  void ConfigureReadMock(struct input_event* queue,
+                         long read_this_many,
+                         long queue_index);
+
+  unsigned size() { return dispatched_events_.size(); }
+  TouchEvent* event(unsigned index) { return dispatched_events_[index]; }
+
+  // Actually dispatch the event reader code.
+  void ReadNow() {
+    OnFileCanReadWithoutBlocking(read_pipe_);
+    base::RunLoop().RunUntilIdle();
+  }
+
+  virtual bool Dispatch(const base::NativeEvent& event) OVERRIDE;
+
+ private:
+  int read_pipe_;
+  int write_pipe_;
+
+  ScopedVector<TouchEvent> dispatched_events_;
+
+  DISALLOW_COPY_AND_ASSIGN(MockTouchEventConverterOzone);
+};
+
+MockTouchEventConverterOzone::MockTouchEventConverterOzone(int a, int b)
+    : TouchEventConverterOzone(a, b) {
+  pressure_min_ = 30;
+  pressure_max_ = 60;
+
+  int fds[2];
+
+  DCHECK(pipe(fds) >= 0) << "pipe() failed, errno: " << errno;
+  DCHECK(SetNonBlocking(fds[0]) == 0)
+      << "SetNonBlocking for pipe fd[0] failed, errno: " << errno;
+  DCHECK(SetNonBlocking(fds[1]) == 0)
+      << "SetNonBlocking for pipe fd[0] failed, errno: " << errno;
+  read_pipe_ = fds[0];
+  write_pipe_ = fds[1];
+}
+
+bool MockTouchEventConverterOzone::Dispatch(const base::NativeEvent& event) {
+  ui::TouchEvent* ev = new ui::TouchEvent(event);
+  dispatched_events_.push_back(ev);
+  return true;
+}
+
+void MockTouchEventConverterOzone::ConfigureReadMock(struct input_event* queue,
+                                                     long read_this_many,
+                                                     long queue_index) {
+  int nwrite = HANDLE_EINTR(write(write_pipe_,
+                                  queue + queue_index,
+                                  sizeof(struct input_event) * read_this_many));
+  DCHECK(nwrite ==
+         static_cast<int>(sizeof(struct input_event) * read_this_many))
+      << "write() failed, errno: " << errno;
+}
+
+}  // namespace ui
+
+// Test fixture.
+class TouchEventConverterOzoneTest : public testing::Test {
+ public:
+  TouchEventConverterOzoneTest() {}
+
+  // Overridden from testing::Test:
+  virtual void SetUp() OVERRIDE {
+    loop_ = new MessageLoop(MessageLoop::TYPE_UI);
+    device_ = new ui::MockTouchEventConverterOzone(-1, 2);
+    base::MessagePumpOzone::Current()->AddDispatcherForRootWindow(device_);
+  }
+  virtual void TearDown() OVERRIDE {
+    delete device_;
+    delete loop_;
+  }
+
+  ui::MockTouchEventConverterOzone* device() { return device_; }
+
+ private:
+  base::MessageLoop* loop_;
+  ui::MockTouchEventConverterOzone* device_;
+  DISALLOW_COPY_AND_ASSIGN(TouchEventConverterOzoneTest);
+};
+
+// TODO(rjkroege): Test for valid handling of time stamps.
+TEST_F(TouchEventConverterOzoneTest, TouchDown) {
+  ui::MockTouchEventConverterOzone* dev = device();
+
+  struct input_event mock_kernel_queue[] = {
+    {{0, 0}, EV_ABS, ABS_MT_TRACKING_ID, 684},
+    {{0, 0}, EV_ABS, ABS_MT_TOUCH_MAJOR, 3},
+    {{0, 0}, EV_ABS, ABS_MT_PRESSURE, 45},
+    {{0, 0}, EV_ABS, ABS_MT_POSITION_X, 42},
+    {{0, 0}, EV_ABS, ABS_MT_POSITION_Y, 51}, {{0, 0}, EV_SYN, SYN_REPORT, 0}
+  };
+
+  dev->ConfigureReadMock(mock_kernel_queue, 1, 0);
+  dev->ReadNow();
+  EXPECT_EQ(0u, dev->size());
+
+  dev->ConfigureReadMock(mock_kernel_queue, 2, 1);
+  dev->ReadNow();
+  EXPECT_EQ(0u, dev->size());
+
+  dev->ConfigureReadMock(mock_kernel_queue, 3, 3);
+  dev->ReadNow();
+  EXPECT_EQ(1u, dev->size());
+
+  ui::TouchEvent* event = dev->event(0);
+  EXPECT_FALSE(event == NULL);
+
+  EXPECT_EQ(ui::ET_TOUCH_PRESSED, event->type());
+  EXPECT_EQ(base::TimeDelta::FromMicroseconds(0), event->time_stamp());
+  EXPECT_EQ(42, event->x());
+  EXPECT_EQ(51, event->y());
+  EXPECT_EQ(0, event->touch_id());
+  EXPECT_FLOAT_EQ(.5f, event->force());
+  EXPECT_FLOAT_EQ(0.f, event->rotation_angle());
+}
+
+TEST_F(TouchEventConverterOzoneTest, NoEvents) {
+  ui::MockTouchEventConverterOzone* dev = device();
+  dev->ConfigureReadMock(NULL, 0, 0);
+  EXPECT_EQ(0u, dev->size());
+}
+
+TEST_F(TouchEventConverterOzoneTest, TouchMove) {
+  ui::MockTouchEventConverterOzone* dev = device();
+
+  struct input_event mock_kernel_queue_press[] = {
+    {{0, 0}, EV_ABS, ABS_MT_TRACKING_ID, 684},
+    {{0, 0}, EV_ABS, ABS_MT_TOUCH_MAJOR, 3},
+    {{0, 0}, EV_ABS, ABS_MT_PRESSURE, 45},
+    {{0, 0}, EV_ABS, ABS_MT_POSITION_X, 42},
+    {{0, 0}, EV_ABS, ABS_MT_POSITION_Y, 51}, {{0, 0}, EV_SYN, SYN_REPORT, 0}
+  };
+
+  struct input_event mock_kernel_queue_move1[] = {
+    {{0, 0}, EV_ABS, ABS_MT_PRESSURE, 50},
+    {{0, 0}, EV_ABS, ABS_MT_POSITION_X, 42},
+    {{0, 0}, EV_ABS, ABS_MT_POSITION_Y, 43}, {{0, 0}, EV_SYN, SYN_REPORT, 0}
+  };
+
+  struct input_event mock_kernel_queue_move2[] = {
+    {{0, 0}, EV_ABS, ABS_MT_POSITION_Y, 42}, {{0, 0}, EV_SYN, SYN_REPORT, 0}
+  };
+
+  // Setup and discard a press.
+  dev->ConfigureReadMock(mock_kernel_queue_press, 6, 0);
+  dev->ReadNow();
+  EXPECT_EQ(1u, dev->size());
+
+  dev->ConfigureReadMock(mock_kernel_queue_move1, 4, 0);
+  dev->ReadNow();
+  EXPECT_EQ(2u, dev->size());
+  ui::TouchEvent* event = dev->event(1);
+  EXPECT_FALSE(event == NULL);
+
+  EXPECT_EQ(ui::ET_TOUCH_MOVED, event->type());
+  EXPECT_EQ(base::TimeDelta::FromMicroseconds(0), event->time_stamp());
+  EXPECT_EQ(42, event->x());
+  EXPECT_EQ(43, event->y());
+  EXPECT_EQ(0, event->touch_id());
+  EXPECT_FLOAT_EQ(2.f / 3.f, event->force());
+  EXPECT_FLOAT_EQ(0.f, event->rotation_angle());
+
+  dev->ConfigureReadMock(mock_kernel_queue_move2, 2, 0);
+  dev->ReadNow();
+  EXPECT_EQ(3u, dev->size());
+  event = dev->event(2);
+  EXPECT_FALSE(event == NULL);
+
+  EXPECT_EQ(ui::ET_TOUCH_MOVED, event->type());
+  EXPECT_EQ(base::TimeDelta::FromMicroseconds(0), event->time_stamp());
+  EXPECT_EQ(42, event->x());
+  EXPECT_EQ(42, event->y());
+  EXPECT_EQ(0, event->touch_id());
+  EXPECT_FLOAT_EQ(2.f / 3.f, event->force());
+  EXPECT_FLOAT_EQ(0.f, event->rotation_angle());
+}
+
+TEST_F(TouchEventConverterOzoneTest, TouchRelease) {
+  ui::MockTouchEventConverterOzone* dev = device();
+
+  struct input_event mock_kernel_queue_press[] = {
+    {{0, 0}, EV_ABS, ABS_MT_TRACKING_ID, 684},
+    {{0, 0}, EV_ABS, ABS_MT_TOUCH_MAJOR, 3},
+    {{0, 0}, EV_ABS, ABS_MT_PRESSURE, 45},
+    {{0, 0}, EV_ABS, ABS_MT_POSITION_X, 42},
+    {{0, 0}, EV_ABS, ABS_MT_POSITION_Y, 51}, {{0, 0}, EV_SYN, SYN_REPORT, 0}
+  };
+
+  struct input_event mock_kernel_queue_release[] = {
+    {{0, 0}, EV_ABS, ABS_MT_TRACKING_ID, -1}, {{0, 0}, EV_SYN, SYN_REPORT, 0}
+  };
+
+  // Setup and discard a press.
+  dev->ConfigureReadMock(mock_kernel_queue_press, 6, 0);
+  dev->ReadNow();
+  EXPECT_EQ(1u, dev->size());
+  ui::TouchEvent* event = dev->event(0);
+  EXPECT_FALSE(event == NULL);
+
+  dev->ConfigureReadMock(mock_kernel_queue_release, 2, 0);
+  dev->ReadNow();
+  EXPECT_EQ(2u, dev->size());
+  event = dev->event(1);
+  EXPECT_FALSE(event == NULL);
+
+  EXPECT_EQ(ui::ET_TOUCH_RELEASED, event->type());
+  EXPECT_EQ(base::TimeDelta::FromMicroseconds(0), event->time_stamp());
+  EXPECT_EQ(42, event->x());
+  EXPECT_EQ(51, event->y());
+  EXPECT_EQ(0, event->touch_id());
+  EXPECT_FLOAT_EQ(.5f, event->force());
+  EXPECT_FLOAT_EQ(0.f, event->rotation_angle());
+}
+
+TEST_F(TouchEventConverterOzoneTest, TwoFingerGesture) {
+  ui::MockTouchEventConverterOzone* dev = device();
+
+  ui::TouchEvent* ev0;
+  ui::TouchEvent* ev1;
+
+  struct input_event mock_kernel_queue_press0[] = {
+    {{0, 0}, EV_ABS, ABS_MT_TRACKING_ID, 684},
+    {{0, 0}, EV_ABS, ABS_MT_TOUCH_MAJOR, 3},
+    {{0, 0}, EV_ABS, ABS_MT_PRESSURE, 45},
+    {{0, 0}, EV_ABS, ABS_MT_POSITION_X, 42},
+    {{0, 0}, EV_ABS, ABS_MT_POSITION_Y, 51}, {{0, 0}, EV_SYN, SYN_REPORT, 0}
+  };
+  // Setup and discard a press.
+  dev->ConfigureReadMock(mock_kernel_queue_press0, 6, 0);
+  dev->ReadNow();
+  EXPECT_EQ(1u, dev->size());
+
+  struct input_event mock_kernel_queue_move0[] = {
+    {{0, 0}, EV_ABS, ABS_MT_POSITION_X, 40}, {{0, 0}, EV_SYN, SYN_REPORT, 0}
+  };
+  // Setup and discard a move.
+  dev->ConfigureReadMock(mock_kernel_queue_move0, 2, 0);
+  dev->ReadNow();
+  EXPECT_EQ(2u, dev->size());
+
+  struct input_event mock_kernel_queue_move0press1[] = {
+    {{0, 0}, EV_ABS, ABS_MT_POSITION_X, 40}, {{0, 0}, EV_SYN, SYN_REPORT, 0},
+    {{0, 0}, EV_ABS, ABS_MT_SLOT, 1}, {{0, 0}, EV_ABS, ABS_MT_TRACKING_ID, 686},
+    {{0, 0}, EV_ABS, ABS_MT_TOUCH_MAJOR, 3},
+    {{0, 0}, EV_ABS, ABS_MT_PRESSURE, 45},
+    {{0, 0}, EV_ABS, ABS_MT_POSITION_X, 101},
+    {{0, 0}, EV_ABS, ABS_MT_POSITION_Y, 102}, {{0, 0}, EV_SYN, SYN_REPORT, 0}
+  };
+  // Move on 0, press on 1.
+  dev->ConfigureReadMock(mock_kernel_queue_move0press1, 9, 0);
+  dev->ReadNow();
+  EXPECT_EQ(4u, dev->size());
+  ev0 = dev->event(2);
+  ev1 = dev->event(3);
+
+  // Move
+  EXPECT_EQ(ui::ET_TOUCH_MOVED, ev0->type());
+  EXPECT_EQ(base::TimeDelta::FromMicroseconds(0), ev0->time_stamp());
+  EXPECT_EQ(40, ev0->x());
+  EXPECT_EQ(51, ev0->y());
+  EXPECT_EQ(0, ev0->touch_id());
+  EXPECT_FLOAT_EQ(.5f, ev0->force());
+  EXPECT_FLOAT_EQ(0.f, ev0->rotation_angle());
+
+  // Press
+  EXPECT_EQ(ui::ET_TOUCH_PRESSED, ev1->type());
+  EXPECT_EQ(base::TimeDelta::FromMicroseconds(0), ev1->time_stamp());
+  EXPECT_EQ(101, ev1->x());
+  EXPECT_EQ(102, ev1->y());
+  EXPECT_EQ(1, ev1->touch_id());
+  EXPECT_FLOAT_EQ(.5f, ev1->force());
+  EXPECT_FLOAT_EQ(0.f, ev1->rotation_angle());
+
+  // Stationary 0, Moves 1.
+  struct input_event mock_kernel_queue_stationary0_move1[] = {
+    {{0, 0}, EV_ABS, ABS_MT_POSITION_X, 40}, {{0, 0}, EV_SYN, SYN_REPORT, 0}
+  };
+  dev->ConfigureReadMock(mock_kernel_queue_stationary0_move1, 2, 0);
+  dev->ReadNow();
+  EXPECT_EQ(5u, dev->size());
+  ev1 = dev->event(4);
+
+  EXPECT_EQ(ui::ET_TOUCH_MOVED, ev1->type());
+  EXPECT_EQ(base::TimeDelta::FromMicroseconds(0), ev1->time_stamp());
+  EXPECT_EQ(40, ev1->x());
+  EXPECT_EQ(102, ev1->y());
+  EXPECT_EQ(1, ev1->touch_id());
+
+  EXPECT_FLOAT_EQ(.5f, ev1->force());
+  EXPECT_FLOAT_EQ(0.f, ev1->rotation_angle());
+
+  // Move 0, stationary 1.
+  struct input_event mock_kernel_queue_move0_stationary1[] = {
+    {{0, 0}, EV_ABS, ABS_MT_SLOT, 0}, {{0, 0}, EV_ABS, ABS_MT_POSITION_X, 39},
+    {{0, 0}, EV_SYN, SYN_REPORT, 0}
+  };
+  dev->ConfigureReadMock(mock_kernel_queue_move0_stationary1, 3, 0);
+  dev->ReadNow();
+  EXPECT_EQ(6u, dev->size());
+  ev0 = dev->event(5);
+
+  EXPECT_EQ(ui::ET_TOUCH_MOVED, ev0->type());
+  EXPECT_EQ(base::TimeDelta::FromMicroseconds(0), ev0->time_stamp());
+  EXPECT_EQ(39, ev0->x());
+  EXPECT_EQ(51, ev0->y());
+  EXPECT_EQ(0, ev0->touch_id());
+  EXPECT_FLOAT_EQ(.5f, ev0->force());
+  EXPECT_FLOAT_EQ(0.f, ev0->rotation_angle());
+
+  // Release 0, move 1.
+  struct input_event mock_kernel_queue_release0_move1[] = {
+    {{0, 0}, EV_ABS, ABS_MT_TRACKING_ID, -1}, {{0, 0}, EV_ABS, ABS_MT_SLOT, 1},
+    {{0, 0}, EV_ABS, ABS_MT_POSITION_X, 38}, {{0, 0}, EV_SYN, SYN_REPORT, 0}
+  };
+  dev->ConfigureReadMock(mock_kernel_queue_release0_move1, 4, 0);
+  dev->ReadNow();
+  EXPECT_EQ(8u, dev->size());
+  ev0 = dev->event(6);
+  ev1 = dev->event(7);
+
+  EXPECT_EQ(ui::ET_TOUCH_RELEASED, ev0->type());
+  EXPECT_EQ(base::TimeDelta::FromMicroseconds(0), ev0->time_stamp());
+  EXPECT_EQ(39, ev0->x());
+  EXPECT_EQ(51, ev0->y());
+  EXPECT_EQ(0, ev0->touch_id());
+  EXPECT_FLOAT_EQ(.5f, ev0->force());
+  EXPECT_FLOAT_EQ(0.f, ev0->rotation_angle());
+
+  EXPECT_EQ(ui::ET_TOUCH_MOVED, ev1->type());
+  EXPECT_EQ(base::TimeDelta::FromMicroseconds(0), ev1->time_stamp());
+  EXPECT_EQ(38, ev1->x());
+  EXPECT_EQ(102, ev1->y());
+  EXPECT_EQ(1, ev1->touch_id());
+  EXPECT_FLOAT_EQ(.5f, ev1->force());
+  EXPECT_FLOAT_EQ(0.f, ev1->rotation_angle());
+
+  // Release 1.
+  struct input_event mock_kernel_queue_release1[] = {
+    {{0, 0}, EV_ABS, ABS_MT_TRACKING_ID, -1}, {{0, 0}, EV_SYN, SYN_REPORT, 0},
+  };
+  dev->ConfigureReadMock(mock_kernel_queue_release1, 2, 0);
+  dev->ReadNow();
+  EXPECT_EQ(9u, dev->size());
+  ev1 = dev->event(8);
+
+  EXPECT_EQ(ui::ET_TOUCH_RELEASED, ev1->type());
+  EXPECT_EQ(base::TimeDelta::FromMicroseconds(0), ev1->time_stamp());
+  EXPECT_EQ(38, ev1->x());
+  EXPECT_EQ(102, ev1->y());
+  EXPECT_EQ(1, ev1->touch_id());
+  EXPECT_FLOAT_EQ(.5f, ev1->force());
+  EXPECT_FLOAT_EQ(0.f, ev1->rotation_angle());
+}