Implement an input event resource.

ppapi/thunk/ppb_input_event_thunk.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 "ppapi/c/pp_errors.h"
+#include "ppapi/thunk/thunk.h"
+#include "ppapi/thunk/enter.h"
+#include "ppapi/thunk/ppb_input_event_api.h"
+#include "ppapi/thunk/ppb_instance_api.h"
+#include "ppapi/thunk/resource_creation_api.h"
+
+namespace ppapi {
+namespace thunk {
+
+namespace {
+
+typedef EnterFunction<PPB_Instance_FunctionAPI> EnterInstance;
+typedef EnterResource<PPB_InputEvent_API> EnterInputEvent;
+
+// InputEvent ------------------------------------------------------------------
+
+int32_t RequestInputEvents(PP_Instance instance, uint32_t event_classes) {
+  EnterInstance enter(instance, true);
+  if (enter.failed())
+    return PP_ERROR_BADARGUMENT;
+  return enter.functions()->RequestInputEvents(instance, event_classes);
+}
+
+int32_t RequestFilteringInputEvents(PP_Instance instance,
+                                    uint32_t event_classes) {
+  EnterInstance enter(instance, true);
+  if (enter.failed())
+    return PP_ERROR_BADARGUMENT;
+  return enter.functions()->RequestFilteringInputEvents(instance,
+                                                        event_classes);
+}
+
+void ClearInputEventRequest(PP_Instance instance,
+                            uint32_t event_classes) {
+  EnterInstance enter(instance, true);
+  if (enter.succeeded())
+    enter.functions()->ClearInputEventRequest(instance, event_classes);
+}
+
+PP_Bool IsInputEvent(PP_Resource resource) {
+  EnterInputEvent enter(resource, false);
+  return enter.succeeded() ? PP_TRUE : PP_FALSE;
+}
+
+PP_InputEvent_Type GetType(PP_Resource event) {
+  EnterInputEvent enter(event, true);
+  if (enter.failed())
+    return PP_INPUTEVENT_TYPE_UNDEFINED;
+  return enter.object()->GetType();
+}
+
+PP_TimeTicks GetTimeStamp(PP_Resource event) {
+  EnterInputEvent enter(event, true);
+  if (enter.failed())
+    return 0.0;
+  return enter.object()->GetTimeStamp();
+}
+
+uint32_t GetModifiers(PP_Resource event) {
+  EnterInputEvent enter(event, true);
+  if (enter.failed())
+    return 0;
+  return enter.object()->GetModifiers();
+}
+
+const PPB_InputEvent g_ppb_input_event_thunk = {
+  &RequestInputEvents,
+  &RequestFilteringInputEvents,
+  &ClearInputEventRequest,
+  &IsInputEvent,
+  &GetType,
+  &GetTimeStamp,
+  &GetModifiers
+};
+
+// Mouse -----------------------------------------------------------------------
+
+PP_Bool IsMouseInputEvent(PP_Resource resource) {
+  if (!IsInputEvent(resource))
+    return PP_FALSE;  // Prevent warning log in GetType.
+  PP_InputEvent_Type type = GetType(resource);
+  return PP_FromBool(type == PP_INPUTEVENT_TYPE_MOUSEDOWN ||
+                     type == PP_INPUTEVENT_TYPE_MOUSEUP ||
+                     type == PP_INPUTEVENT_TYPE_MOUSEMOVE ||
+                     type == PP_INPUTEVENT_TYPE_MOUSEENTER ||
+                     type == PP_INPUTEVENT_TYPE_MOUSELEAVE ||
+                     type == PP_INPUTEVENT_TYPE_CONTEXTMENU);
+}
+
+PP_InputEvent_MouseButton GetMouseButton(PP_Resource mouse_event) {
+  EnterInputEvent enter(mouse_event, true);
+  if (enter.failed())
+    return PP_INPUTEVENT_MOUSEBUTTON_NONE;
+  return enter.object()->GetMouseButton();
+}
+
+PP_Point GetMousePosition(PP_Resource mouse_event) {
+  EnterInputEvent enter(mouse_event, true);
+  if (enter.failed())
+    return PP_MakePoint(0, 0);
+  return enter.object()->GetMousePosition();
+}
+
+int32_t GetMouseClickCount(PP_Resource mouse_event) {
+  EnterInputEvent enter(mouse_event, true);
+  if (enter.failed())
+    return 0;
+  return enter.object()->GetMouseClickCount();
+}
+
+const PPB_MouseInputEvent g_ppb_mouse_input_event_thunk = {
+  &IsMouseInputEvent,
+  &GetMouseButton,
+  &GetMousePosition,
+  &GetMouseClickCount
+};
+
+// Wheel -----------------------------------------------------------------------
+
+PP_Bool IsWheelInputEvent(PP_Resource resource) {
+  if (!IsInputEvent(resource))
+    return PP_FALSE;  // Prevent warning log in GetType.
+  PP_InputEvent_Type type = GetType(resource);
+  return PP_FromBool(type == PP_INPUTEVENT_TYPE_MOUSEWHEEL);
+}
+
+PP_FloatPoint GetWheelDelta(PP_Resource wheel_event) {
+  EnterInputEvent enter(wheel_event, true);
+  if (enter.failed())
+    return PP_MakeFloatPoint(0.0f, 0.0f);
+  return enter.object()->GetWheelDelta();
+}
+
+PP_FloatPoint GetWheelTicks(PP_Resource wheel_event) {
+  EnterInputEvent enter(wheel_event, true);
+  if (enter.failed())
+    return PP_MakeFloatPoint(0.0f, 0.0f);
+  return enter.object()->GetWheelTicks();
+}
+
+PP_Bool GetWheelScrollByPage(PP_Resource wheel_event) {
+  EnterInputEvent enter(wheel_event, true);
+  if (enter.failed())
+    return PP_FALSE;
+  return enter.object()->GetWheelScrollByPage();
+}
+
+const PPB_WheelInputEvent g_ppb_wheel_input_event_thunk = {
+  &IsWheelInputEvent,
+  &GetWheelDelta,
+  &GetWheelTicks,
+  &GetWheelScrollByPage
+};
+
+// Keyboard --------------------------------------------------------------------
+
+PP_Bool IsKeyboardInputEvent(PP_Resource resource) {
+  if (!IsInputEvent(resource))
+    return PP_FALSE;  // Prevent warning log in GetType.
+  PP_InputEvent_Type type = GetType(resource);
+  return PP_FromBool(type == PP_INPUTEVENT_TYPE_KEYDOWN ||
+                     type == PP_INPUTEVENT_TYPE_KEYUP ||
+                     type == PP_INPUTEVENT_TYPE_CHAR);
+}
+
+uint32_t GetKeyCode(PP_Resource key_event) {
+  EnterInputEvent enter(key_event, true);
+  if (enter.failed())
+    return 0;
+  return enter.object()->GetKeyCode();
+}
+
+PP_Var GetCharacterText(PP_Resource character_event) {
+  EnterInputEvent enter(character_event, true);
+  if (enter.failed())
+    return PP_MakeUndefined();
+  return enter.object()->GetCharacterText();
+}
+
+const PPB_KeyboardInputEvent g_ppb_keyboard_input_event_thunk = {
+  &IsKeyboardInputEvent,
+  &GetKeyCode,
+  &GetCharacterText
+};
+
+}  // namespace
+
+const PPB_InputEvent* GetPPB_InputEvent_Thunk() {
+  return &g_ppb_input_event_thunk;
+}
+
+const PPB_MouseInputEvent* GetPPB_MouseInputEvent_Thunk() {
+  return &g_ppb_mouse_input_event_thunk;
+}
+
+const PPB_KeyboardInputEvent* GetPPB_KeyboardInputEvent_Thunk() {
+  return &g_ppb_keyboard_input_event_thunk;
+}
+
+const PPB_WheelInputEvent* GetPPB_WheelInputEvent_Thunk() {
+  return &g_ppb_wheel_input_event_thunk;
+}
+
+}  // namespace thunk
+}  // namespace ppapi