Cloning a bunch of stuff from the native_client repository at r6528

ppapi/native_client/tests/ppapi_simple_tests/event.cc

+// Copyright (c) 2011 The Native Client 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 <stdint.h>
+#include <stdlib.h>
+
+#include <sstream>
+#include <string>
+#include <queue>
+
+#include "ppapi/c/pp_input_event.h"
+#include "ppapi/c/ppp_input_event.h"
+#include "ppapi/cpp/instance.h"
+#include "ppapi/cpp/module.h"
+#include "ppapi/cpp/point.h"
+#include "ppapi/cpp/var.h"
+#include "ppapi/cpp/input_event.h"
+
+
+using std::string;
+using std::queue;
+using std::ostringstream;
+
+const int kDefaultEventBufferSize = 10;
+
+namespace {
+
+string ModifierToString(uint32_t modifier) {
+  string s;
+  if (modifier & PP_INPUTEVENT_MODIFIER_SHIFTKEY) {
+    s += "shift ";
+  }
+  if (modifier & PP_INPUTEVENT_MODIFIER_CONTROLKEY) {
+    s += "ctrl ";
+  }
+  if (modifier & PP_INPUTEVENT_MODIFIER_ALTKEY) {
+    s += "alt ";
+  }
+  if (modifier & PP_INPUTEVENT_MODIFIER_METAKEY) {
+    s += "meta ";
+  }
+  if (modifier & PP_INPUTEVENT_MODIFIER_ISKEYPAD) {
+    s += "keypad ";
+  }
+  if (modifier & PP_INPUTEVENT_MODIFIER_ISAUTOREPEAT) {
+    s += "autorepeat ";
+  }
+  if (modifier & PP_INPUTEVENT_MODIFIER_LEFTBUTTONDOWN) {
+    s += "left-button-down ";
+  }
+  if (modifier & PP_INPUTEVENT_MODIFIER_MIDDLEBUTTONDOWN) {
+    s += "middle-button-down ";
+  }
+  if (modifier & PP_INPUTEVENT_MODIFIER_RIGHTBUTTONDOWN) {
+    s += "right-button-down ";
+  }
+  if (modifier & PP_INPUTEVENT_MODIFIER_CAPSLOCKKEY) {
+    s += "caps-lock ";
+  }
+  if (modifier & PP_INPUTEVENT_MODIFIER_NUMLOCKKEY) {
+    s += "num-lock ";
+  }
+  return s;
+}
+
+
+string MouseButtonToString(PP_InputEvent_MouseButton button) {
+  switch (button) {
+    case PP_INPUTEVENT_MOUSEBUTTON_NONE:
+      return "None";
+    case PP_INPUTEVENT_MOUSEBUTTON_LEFT:
+      return "Left";
+    case PP_INPUTEVENT_MOUSEBUTTON_MIDDLE:
+      return "Middle";
+    case PP_INPUTEVENT_MOUSEBUTTON_RIGHT:
+      return "Right";
+    default:
+      ostringstream stream;
+      stream << "Unrecognized (" << static_cast<int32_t>(button) << ")";
+      return stream.str();
+  }
+}
+
+
+string KeyEvent(const pp::KeyboardInputEvent& key_event,
+                const string& kind) {
+  ostringstream stream;
+  stream << "Key event:" << kind
+         << " modifier:" << ModifierToString(key_event.GetModifiers())
+         << " key_code:" << key_event.GetKeyCode()
+         << " time:" << key_event.GetTimeStamp()
+         << " text:" << key_event.GetCharacterText().DebugString()
+         << "\n";
+  return stream.str();
+}
+
+
+string MouseEvent(const pp::MouseInputEvent& mouse_event,
+                  const string& kind) {
+  ostringstream stream;
+  stream << "Mouse event:" << kind
+         << " modifier:" << ModifierToString(mouse_event.GetModifiers())
+         << " button:" << MouseButtonToString(mouse_event.GetButton())
+         << " x:" << mouse_event.GetPosition().x()
+         << " y:" << mouse_event.GetPosition().y()
+         << " click_count:" << mouse_event.GetClickCount()
+         << " time:" << mouse_event.GetTimeStamp()
+         << "\n";
+  return stream.str();
+}
+
+
+string WheelEvent(const pp::WheelInputEvent& wheel_event) {
+  ostringstream stream;
+  stream << "Wheel event."
+         << " modifier:" << ModifierToString(wheel_event.GetModifiers())
+         << " deltax:" << wheel_event.GetDelta().x()
+         << " deltay:" << wheel_event.GetDelta().y()
+         << " wheel_ticks_x:" << wheel_event.GetTicks().x()
+         << " wheel_ticks_y:" << wheel_event.GetTicks().y()
+         << " scroll_by_page:"
+         << (wheel_event.GetScrollByPage() ? "true" : "false")
+         << "\n";
+  return stream.str();
+}
+
+
+string EventToString(const pp::InputEvent& event) {
+  ostringstream stream;
+  switch (event.GetType()) {
+    default:
+    case PP_INPUTEVENT_TYPE_UNDEFINED:
+     stream << "Unrecognized Event (" << static_cast<int32_t>(event.GetType())
+             << ")";
+      return stream.str();
+
+    case PP_INPUTEVENT_TYPE_MOUSEDOWN:
+      return MouseEvent(pp::MouseInputEvent(event), "Down");
+    case PP_INPUTEVENT_TYPE_MOUSEUP:
+      return MouseEvent(pp::MouseInputEvent(event), "Up");
+    case PP_INPUTEVENT_TYPE_MOUSEMOVE:
+      return MouseEvent(pp::MouseInputEvent(event), "Move");
+    case PP_INPUTEVENT_TYPE_MOUSEENTER:
+      return MouseEvent(pp::MouseInputEvent(event), "Enter");
+    case PP_INPUTEVENT_TYPE_MOUSELEAVE:
+      return MouseEvent(pp::MouseInputEvent(event), "Leave");
+
+    case PP_INPUTEVENT_TYPE_WHEEL:
+      return WheelEvent(pp::WheelInputEvent(event));
+
+    case PP_INPUTEVENT_TYPE_RAWKEYDOWN:
+      return KeyEvent(pp::KeyboardInputEvent(event), "RawKeyDown");
+    case PP_INPUTEVENT_TYPE_KEYDOWN:
+      return KeyEvent(pp::KeyboardInputEvent(event), "Down");
+    case PP_INPUTEVENT_TYPE_KEYUP:
+      return KeyEvent(pp::KeyboardInputEvent(event), "Up");
+    case PP_INPUTEVENT_TYPE_CHAR:
+      return KeyEvent(pp::KeyboardInputEvent(event), "Char");
+  }
+}
+
+void StringReplace(string* input,
+                   const string& find,
+                   const string& replace) {
+  if (find.length() == 0 || input->length() == 0) {
+    return;
+  }
+
+  size_t start_pos = 0;
+  while (1) {
+    start_pos = input->find(find, start_pos);
+    if (start_pos == string::npos) {
+      break;
+    }
+    input->replace(start_pos, find.length(), replace);
+    start_pos += replace.length();
+  }
+}
+
+}  // namespace
+
+
+class MyInstance : public pp::Instance {
+ private:
+  size_t max_buffer_size_;
+  queue<string> event_buffer_;
+
+  void ParseArgs(uint32_t argc, const char* argn[], const char* argv[]) {
+     for (uint32_t i = 0; i < argc; ++i) {
+       const std::string tag = argn[i];
+       if (tag == "buffer_size") max_buffer_size_ = strtol(argv[i], 0, 0);
+       // ignore other tags
+     }
+  }
+
+  // Dump all the event via PostMessage for testing
+  void FlushEventBuffer() {
+      while (event_buffer_.size() > 0) {
+        string s = event_buffer_.front();
+        event_buffer_.pop();
+        // Replace space with underscore to simplify testing
+        StringReplace(&s, " ", "_");
+        pp::Var message(s);
+        PostMessage(message);
+      }
+  }
+
+ public:
+  explicit MyInstance(PP_Instance instance)
+    : pp::Instance(instance), max_buffer_size_(kDefaultEventBufferSize) {
+    RequestInputEvents(PP_INPUTEVENT_CLASS_MOUSE | PP_INPUTEVENT_CLASS_WHEEL);
+    RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_KEYBOARD);
+  }
+
+  virtual ~MyInstance() {}
+
+  virtual bool Init(uint32_t argc, const char* argn[], const char* argv[]) {
+    ParseArgs(argc, argn, argv);
+    return true;
+  }
+
+  virtual bool HandleInputEvent(const pp::InputEvent& event) {
+     ostringstream stream;
+     stream << pp_instance() << ": " << EventToString(event);
+     event_buffer_.push(stream.str());
+    if (event_buffer_.size() >= max_buffer_size_) {
+      FlushEventBuffer();
+    }
+    return true;
+  }
+
+  virtual void DidChangeFocus(bool has_focus) {
+    FlushEventBuffer();
+  }
+};
+
+// standard boilerplate code below
+class MyModule : public pp::Module {
+ public:
+  virtual pp::Instance* CreateInstance(PP_Instance instance) {
+    return new MyInstance(instance);
+  }
+};
+
+namespace pp {
+  Module* CreateModule() {
+    return new MyModule();
+  }
+}