wayland patch for inspection

ui/base/wayland/events_wayland.cc

+// Copyright (c) 2011 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 "ui/base/events/event.h"
+#include "ui/base/events/event_constants.h"
+
+#include <linux/input.h>
+#include <X11/extensions/XInput2.h>
+
+#include "base/event_types.h"
+#include "base/logging.h"
+#include "base/time.h"
+#include "ui/base/keycodes/keyboard_code_conversion_x.h"
+#include "ui/gfx/point.h"
+#include "base/wayland/wayland_event.h"
+
+using namespace base::wayland;
+
+namespace ui {
+
+// These are the mouse events expected. The event type Wayland sends is an
+// evdev event. The following is the correct mapping from evdev to expected
+// events type.
+enum WaylandEventButtonType {
+  LEFT_BUTTON     = BTN_LEFT,
+  MIDDLE_BUTTON   = BTN_RIGHT,
+  RIGHT_BUTTON    = BTN_MIDDLE,
+  SCROLL_UP       = BTN_SIDE,
+  SCROLL_DOWN     = BTN_EXTRA,
+};
+
+} // namespace ui
+
+namespace {
+
+// Scroll amount for each wheelscroll event. 53 is also the value used for GTK+.
+static int kWheelScrollAmount = 53;
+
+int GetEventFlagsFromState(unsigned int state) {
+  int flags = 0;
+  if (state & ControlMask)
+    flags |= ui::EF_CONTROL_DOWN;
+  if (state & ShiftMask)
+    flags |= ui::EF_SHIFT_DOWN;
+  if (state & Mod1Mask)
+    flags |= ui::EF_ALT_DOWN;
+  if (state & LockMask)
+    flags |= ui::EF_CAPS_LOCK_DOWN;
+  if (state & Button1Mask)
+    flags |= ui::EF_LEFT_MOUSE_BUTTON;
+  if (state & Button2Mask)
+    flags |= ui::EF_MIDDLE_MOUSE_BUTTON;
+  if (state & Button3Mask)
+    flags |= ui::EF_RIGHT_MOUSE_BUTTON;
+
+  return flags;
+}
+
+int GetButtonEventFlagsFromNativeEvent(const base::NativeEvent& native_event) {
+  // TODO(dnicoara): Need to add double click.
+  int flags = 0;
+  switch (native_event->button.button) {
+    case ui::LEFT_BUTTON:
+      return flags | ui::EF_LEFT_MOUSE_BUTTON;
+    case ui::MIDDLE_BUTTON:
+      return flags | ui::EF_MIDDLE_MOUSE_BUTTON;
+    case ui::RIGHT_BUTTON:
+      return flags | ui::EF_RIGHT_MOUSE_BUTTON;
+  }
+  return flags;
+}
+
+}  // namespace
+
+namespace ui {
+
+EventType EventTypeFromNative(const base::NativeEvent& native_event) {
+  switch (native_event->type) {
+    case WAYLAND_BUTTON:
+      switch (native_event->button.button) {
+        case LEFT_BUTTON:
+        case RIGHT_BUTTON:
+        case MIDDLE_BUTTON:
+          return native_event->button.state ? ET_MOUSE_PRESSED
+                                            : ET_MOUSE_RELEASED;
+        case SCROLL_UP:
+        case SCROLL_DOWN:
+          return ET_MOUSEWHEEL;
+        default:
+          break;
+      }
+      break;
+    case WAYLAND_KEY:
+      return native_event->key.state ? ET_KEY_PRESSED : ET_KEY_RELEASED;
+    case WAYLAND_MOTION:
+      return ET_MOUSE_MOVED;
+    case WAYLAND_POINTER_FOCUS:
+      return native_event->pointer_focus.state ? ET_MOUSE_ENTERED
+                                               : ET_MOUSE_EXITED;
+    case WAYLAND_KEYBOARD_FOCUS:
+      return ET_UNKNOWN;
+    default:
+      break;
+  }
+  return ET_UNKNOWN;
+}
+
+int EventFlagsFromNative(const base::NativeEvent& native_event) {
+  switch (native_event->type) {
+    case WAYLAND_BUTTON:
+      return GetButtonEventFlagsFromNativeEvent(native_event) |
+             GetEventFlagsFromState(native_event->button.modifiers);
+    case WAYLAND_KEY:
+      return GetEventFlagsFromState(native_event->key.modifiers);
+    case WAYLAND_MOTION:
+      return GetEventFlagsFromState(native_event->motion.modifiers);
+    case WAYLAND_KEYBOARD_FOCUS:
+      return GetEventFlagsFromState(native_event->keyboard_focus.modifiers);
+    default:
+      return 0;
+  }
+}
+
+gfx::Point EventLocationFromNative(const base::NativeEvent& native_event) {
+  switch (native_event->type) {
+    case WAYLAND_BUTTON:
+      return gfx::Point(native_event->button.x, native_event->button.y);
+    case WAYLAND_MOTION:
+      return gfx::Point(native_event->motion.x, native_event->motion.y);
+    case WAYLAND_POINTER_FOCUS:
+      return gfx::Point(native_event->pointer_focus.x,
+                        native_event->pointer_focus.y);
+    default:
+      return gfx::Point();
+  }
+}
+
+KeyboardCode KeyboardCodeFromNative(const base::NativeEvent& native_event) {
+  return VKEY_UNKNOWN; // TODO: use KeyboardCodeFromXKeysym(native_event->key.sym)
+}
+
+bool IsMouseEvent(const base::NativeEvent& native_event) {
+  return native_event->type == WAYLAND_BUTTON ||
+         native_event->type == WAYLAND_MOTION ||
+         native_event->type == WAYLAND_POINTER_FOCUS;
+}
+
+int GetChangedMouseButtonFlagsFromNative(
+    const base::NativeEvent& native_event) {
+  return 0;
+}
+
+int GetMouseWheelOffset(const base::NativeEvent& native_event) {
+  return native_event->button.button == SCROLL_UP ?
+      kWheelScrollAmount : -kWheelScrollAmount;
+}
+
+int GetTouchId(const base::NativeEvent& wev) {
+        return 0;
+}
+
+float GetTouchRadiusX(const base::NativeEvent& native_event) {
+        return 0.0;
+}
+
+float GetTouchRadiusY(const base::NativeEvent& native_event) {
+        return 0.0;
+}
+
+float GetTouchAngle(const base::NativeEvent& native_event) {
+        return 0.0;
+}
+
+float GetTouchForce(const base::NativeEvent& native_event) {
+        return 0.0;
+}
+
+bool GetScrollOffsets(const base::NativeEvent& native_event,
+                      float* x_offset,
+                      float* y_offset,
+                      float* x_offset_ordinal,
+                      float* y_offset_ordinal,
+                      int* finger_count) {
+        return false;
+}
+
+bool GetFlingData(const base::NativeEvent& native_event,
+                  float* vx,
+                  float* vy,
+                  float* vx_ordinal,
+                  float* vy_ordinal,
+                  bool* is_cancel) {
+        return false;
+}
+
+bool GetGestureTimes(const base::NativeEvent& native_event,
+                     double* start_time,
+                     double* end_time) {
+        return false;
+}
+
+base::TimeDelta EventTimeFromNative(const base::NativeEvent& native_event) {
+  return base::TimeDelta();
+}
+
+base::NativeEvent CreateNoopEvent() {
+        return NULL;
+}
+
+}  // namespace ui