Implement an input event resource.

webkit/plugins/ppapi/event_conversion.cc

Index: webkit/plugins/ppapi/event_conversion.cc
===================================================================
--- webkit/plugins/ppapi/event_conversion.cc	(revision 91372)
+++ webkit/plugins/ppapi/event_conversion.cc	(working copy)
@@ -4,6 +4,7 @@
 
 #include "webkit/plugins/ppapi/event_conversion.h"
 
+#include "base/basictypes.h"
 #include "base/i18n/char_iterator.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
@@ -11,9 +12,11 @@
 #include "base/utf_string_conversions.h"
 #include "base/utf_string_conversion_utils.h"
 #include "ppapi/c/pp_input_event.h"
+#include "ppapi/shared_impl/input_event_impl.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebInputEvent.h"
 #include "webkit/plugins/ppapi/common.h"
 
+using ppapi::InputEventData;
 using WebKit::WebInputEvent;
 using WebKit::WebKeyboardEvent;
 using WebKit::WebMouseEvent;
@@ -57,32 +60,30 @@
 // Generates a PP_InputEvent with the fields common to all events, as well as
 // the event type from the given web event. Event-specific fields will be zero
 // initialized.
-PP_InputEvent GetPPEventWithCommonFieldsAndType(
-    const WebInputEvent& web_event) {
-  PP_InputEvent result;
-  memset(&result, 0, sizeof(PP_InputEvent));
-  result.type = ConvertEventTypes(web_event.type);
+InputEventData GetEventWithCommonFieldsAndType(const WebInputEvent& web_event) {
+  InputEventData result;
+  result.event_type = ConvertEventTypes(web_event.type);
   // TODO(brettw) http://code.google.com/p/chromium/issues/detail?id=57448
   // This should use a tick count rather than the wall clock time that WebKit
   // uses.
-  result.time_stamp = web_event.timeStampSeconds;
+  result.event_time_stamp = web_event.timeStampSeconds;
   return result;
 }
 
 void AppendKeyEvent(const WebInputEvent& event,
-                    std::vector<PP_InputEvent>* pp_events) {
+                    std::vector<InputEventData>* result_events) {
   const WebKeyboardEvent& key_event =
-      reinterpret_cast<const WebKeyboardEvent&>(event);
-  PP_InputEvent result = GetPPEventWithCommonFieldsAndType(event);
-  result.u.key.modifier = key_event.modifiers;
-  result.u.key.key_code = key_event.windowsKeyCode;
-  pp_events->push_back(result);
+      static_cast<const WebKeyboardEvent&>(event);
+  InputEventData result = GetEventWithCommonFieldsAndType(event);
+  result.event_modifiers = key_event.modifiers;
+  result.key_code = key_event.windowsKeyCode;
+  result_events->push_back(result);
 }
 
 void AppendCharEvent(const WebInputEvent& event,
-                     std::vector<PP_InputEvent>* pp_events) {
+                     std::vector<InputEventData>* result_events) {
   const WebKeyboardEvent& key_event =
-      reinterpret_cast<const WebKeyboardEvent&>(event);
+      static_cast<const WebKeyboardEvent&>(event);
 
   // This is a bit complex, the input event will normally just have one 16-bit
   // character in it, but may be zero or more than one. The text array is
@@ -98,21 +99,17 @@
   // Make a separate PP_InputEvent for each Unicode character in the input.
   base::i18n::UTF16CharIterator iter(key_event.text, utf16_char_count);
   while (!iter.end()) {
-    PP_InputEvent result = GetPPEventWithCommonFieldsAndType(event);
-    result.u.character.modifier = key_event.modifiers;
+    InputEventData result = GetEventWithCommonFieldsAndType(event);
+    result.event_modifiers = key_event.modifiers;
+    base::WriteUnicodeCharacter(iter.get(), &result.character_text);
 
-    std::string utf8_char;
-    base::WriteUnicodeCharacter(iter.get(), &utf8_char);
-    base::strlcpy(result.u.character.text, utf8_char.c_str(),
-                  sizeof(result.u.character.text));
-
-    pp_events->push_back(result);
+    result_events->push_back(result);
     iter.Advance();
   }
 }
 
 void AppendMouseEvent(const WebInputEvent& event,
-                      std::vector<PP_InputEvent>* pp_events) {
+                      std::vector<InputEventData>* result_events) {
   COMPILE_ASSERT(static_cast<int>(WebMouseEvent::ButtonNone) ==
                  static_cast<int>(PP_INPUTEVENT_MOUSEBUTTON_NONE),
                  MouseNone);
@@ -127,30 +124,32 @@
                  MouseMiddle);
 
   const WebMouseEvent& mouse_event =
-      reinterpret_cast<const WebMouseEvent&>(event);
-  PP_InputEvent result = GetPPEventWithCommonFieldsAndType(event);
-  result.u.mouse.modifier = mouse_event.modifiers;
-  result.u.mouse.button =
-      static_cast<PP_InputEvent_MouseButton>(mouse_event.button);
-  result.u.mouse.x = static_cast<float>(mouse_event.x);
-  result.u.mouse.y = static_cast<float>(mouse_event.y);
-  result.u.mouse.click_count = mouse_event.clickCount;
-  pp_events->push_back(result);
+      static_cast<const WebMouseEvent&>(event);
+  InputEventData result = GetEventWithCommonFieldsAndType(event);
+  result.event_modifiers = mouse_event.modifiers;
+  if (mouse_event.type == WebInputEvent::MouseDown ||
+      mouse_event.type == WebInputEvent::MouseUp) {
+    result.mouse_button =
+        static_cast<PP_InputEvent_MouseButton>(mouse_event.button);
+  }
+  result.mouse_position.x = mouse_event.x;
+  result.mouse_position.y = mouse_event.y;
+  result.mouse_click_count = mouse_event.clickCount;
+  result_events->push_back(result);
 }
 
 void AppendMouseWheelEvent(const WebInputEvent& event,
-                           std::vector<PP_InputEvent>* pp_events) {
+                           std::vector<InputEventData>* result_events) {
   const WebMouseWheelEvent& mouse_wheel_event =
-      reinterpret_cast<const WebMouseWheelEvent&>(event);
-  PP_InputEvent result = GetPPEventWithCommonFieldsAndType(event);
-  result.u.wheel.modifier = mouse_wheel_event.modifiers;
-  result.u.wheel.delta_x = mouse_wheel_event.deltaX;
-  result.u.wheel.delta_y = mouse_wheel_event.deltaY;
-  result.u.wheel.wheel_ticks_x = mouse_wheel_event.wheelTicksX;
-  result.u.wheel.wheel_ticks_y = mouse_wheel_event.wheelTicksY;
-  result.u.wheel.scroll_by_page =
-      BoolToPPBool(!!mouse_wheel_event.scrollByPage);
-  pp_events->push_back(result);
+      static_cast<const WebMouseWheelEvent&>(event);
+  InputEventData result = GetEventWithCommonFieldsAndType(event);
+  result.event_modifiers = mouse_wheel_event.modifiers;
+  result.wheel_delta.x = mouse_wheel_event.deltaX;
+  result.wheel_delta.y = mouse_wheel_event.deltaY;
+  result.wheel_ticks.x = mouse_wheel_event.wheelTicksX;
+  result.wheel_ticks.y = mouse_wheel_event.wheelTicksY;
+  result.wheel_scroll_by_page = mouse_wheel_event.scrollByPage;
+  result_events->push_back(result);
 }
 
 WebKeyboardEvent* BuildKeyEvent(const PP_InputEvent& event) {
@@ -244,12 +243,64 @@
   return mouse_wheel_event;
 }
 
+void InputEventDataToPPInputEvent(const InputEventData& data,
+                                  PP_InputEvent* result) {
+  memset(result, 0, sizeof(PP_InputEvent));
+  result->type = data.event_type;
+  result->time_stamp = data.event_time_stamp;
+
+  switch (data.event_type) {
+    case PP_INPUTEVENT_TYPE_MOUSEDOWN:
+    case PP_INPUTEVENT_TYPE_MOUSEUP:
+    case PP_INPUTEVENT_TYPE_MOUSEMOVE:
+    case PP_INPUTEVENT_TYPE_MOUSEENTER:
+    case PP_INPUTEVENT_TYPE_MOUSELEAVE:
+    case PP_INPUTEVENT_TYPE_CONTEXTMENU:
+      result->u.mouse.modifier = data.event_modifiers;
+      result->u.mouse.button = data.mouse_button;
+      result->u.mouse.x = static_cast<float>(data.mouse_position.x);
+      result->u.mouse.y = static_cast<float>(data.mouse_position.y);
+      result->u.mouse.click_count = data.mouse_click_count;
+      break;
+    case PP_INPUTEVENT_TYPE_MOUSEWHEEL:
+      result->u.wheel.modifier = data.event_modifiers;
+      result->u.wheel.delta_x = data.wheel_delta.x;
+      result->u.wheel.delta_y = data.wheel_delta.y;
+      result->u.wheel.wheel_ticks_x = data.wheel_ticks.x;
+      result->u.wheel.wheel_ticks_y = data.wheel_ticks.y;
+      break;
+    case PP_INPUTEVENT_TYPE_RAWKEYDOWN:
+    case PP_INPUTEVENT_TYPE_KEYDOWN:
+    case PP_INPUTEVENT_TYPE_KEYUP:
+      result->u.key.modifier = data.event_modifiers;
+      result->u.key.key_code = data.key_code;
+      break;
+    case PP_INPUTEVENT_TYPE_CHAR:
+      result->u.character.modifier = data.event_modifiers;
+      base::strlcpy(result->u.character.text, data.character_text.c_str(),
+                    arraysize(result->u.character.text));
+      break;
+    case PP_INPUTEVENT_TYPE_UNDEFINED:
+      break;
+  }
+}
+
 }  // namespace
 
 void CreatePPEvent(const WebInputEvent& event,
                    std::vector<PP_InputEvent>* pp_events) {
-  pp_events->clear();
+  std::vector<InputEventData> data;
+  CreateInputEventData(event, &data);
 
+  pp_events->resize(data.size());
+  for (size_t i = 0; i < data.size(); i++)
+    InputEventDataToPPInputEvent(data[i], &(*pp_events)[i]);
+}
+
+void CreateInputEventData(const WebInputEvent& event,
+                          std::vector<InputEventData>* result) {
+  result->clear();
+
   switch (event.type) {
     case WebInputEvent::MouseDown:
     case WebInputEvent::MouseUp:
@@ -257,18 +308,18 @@
     case WebInputEvent::MouseEnter:
     case WebInputEvent::MouseLeave:
     case WebInputEvent::ContextMenu:
-      AppendMouseEvent(event, pp_events);
+      AppendMouseEvent(event, result);
       break;
     case WebInputEvent::MouseWheel:
-      AppendMouseWheelEvent(event, pp_events);
+      AppendMouseWheelEvent(event, result);
       break;
     case WebInputEvent::RawKeyDown:
     case WebInputEvent::KeyDown:
     case WebInputEvent::KeyUp:
-      AppendKeyEvent(event, pp_events);
+      AppendKeyEvent(event, result);
       break;
     case WebInputEvent::Char:
-      AppendCharEvent(event, pp_events);
+      AppendCharEvent(event, result);
       break;
     case WebInputEvent::Undefined:
     default:
@@ -305,5 +356,28 @@
   return web_input_event.release();
 }
 
+PP_InputEvent_Class ClassifyInputEvent(WebInputEvent::Type type) {
+  switch (type) {
+    case WebInputEvent::MouseDown:
+    case WebInputEvent::MouseUp:
+    case WebInputEvent::MouseMove:
+    case WebInputEvent::MouseEnter:
+    case WebInputEvent::MouseLeave:
+    case WebInputEvent::ContextMenu:
+      return PP_INPUTEVENT_CLASS_MOUSE;
+    case WebInputEvent::MouseWheel:
+      return PP_INPUTEVENT_CLASS_WHEEL;
+    case WebInputEvent::RawKeyDown:
+    case WebInputEvent::KeyDown:
+    case WebInputEvent::KeyUp:
+    case WebInputEvent::Char:
+      return PP_INPUTEVENT_CLASS_KEYBOARD;
+    case WebInputEvent::Undefined:
+    default:
+      NOTREACHED();
+      return PP_InputEvent_Class(0);
+  }
+}
+
 }  // namespace ppapi
 }  // namespace webkit