event_conversion.cc revision 58e6fbe4ee35d65e14b626c557d37565bf8ad179 
1// Copyright (c) 2012 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "content/renderer/pepper/event_conversion.h"
6
7#include <map>
8
9#include "base/basictypes.h"
10#include "base/i18n/char_iterator.h"
11#include "base/logging.h"
12#include "base/memory/scoped_ptr.h"
13#include "base/strings/string_util.h"
14#include "base/strings/stringprintf.h"
15#include "base/strings/utf_string_conversion_utils.h"
16#include "base/strings/utf_string_conversions.h"
17#include "content/renderer/pepper/common.h"
18#include "content/renderer/pepper/usb_key_code_conversion.h"
19#include "ppapi/c/pp_input_event.h"
20#include "ppapi/shared_impl/ppb_input_event_shared.h"
21#include "ppapi/shared_impl/time_conversion.h"
22#include "third_party/WebKit/public/platform/WebGamepads.h"
23#include "third_party/WebKit/public/platform/WebString.h"
24#include "third_party/WebKit/public/web/WebInputEvent.h"
25
26using ppapi::EventTimeToPPTimeTicks;
27using ppapi::InputEventData;
28using ppapi::PPTimeTicksToEventTime;
29using WebKit::WebInputEvent;
30using WebKit::WebKeyboardEvent;
31using WebKit::WebMouseEvent;
32using WebKit::WebMouseWheelEvent;
33using WebKit::WebString;
34using WebKit::WebTouchEvent;
35using WebKit::WebTouchPoint;
36using WebKit::WebUChar;
37
38namespace content {
39
40namespace {
41
42// Verify the modifier flags WebKit uses match the Pepper ones. If these start
43// not matching, we'll need to write conversion code to preserve the Pepper
44// values (since plugins will be depending on them).
45COMPILE_ASSERT(static_cast<int>(PP_INPUTEVENT_MODIFIER_SHIFTKEY) ==
46               static_cast<int>(WebInputEvent::ShiftKey),
47               ShiftKeyMatches);
48COMPILE_ASSERT(static_cast<int>(PP_INPUTEVENT_MODIFIER_CONTROLKEY) ==
49               static_cast<int>(WebInputEvent::ControlKey),
50               ControlKeyMatches);
51COMPILE_ASSERT(static_cast<int>(PP_INPUTEVENT_MODIFIER_ALTKEY) ==
52               static_cast<int>(WebInputEvent::AltKey),
53               AltKeyMatches);
54COMPILE_ASSERT(static_cast<int>(PP_INPUTEVENT_MODIFIER_METAKEY) ==
55               static_cast<int>(WebInputEvent::MetaKey),
56               MetaKeyMatches);
57COMPILE_ASSERT(static_cast<int>(PP_INPUTEVENT_MODIFIER_ISKEYPAD) ==
58               static_cast<int>(WebInputEvent::IsKeyPad),
59               KeyPadMatches);
60COMPILE_ASSERT(static_cast<int>(PP_INPUTEVENT_MODIFIER_ISAUTOREPEAT) ==
61               static_cast<int>(WebInputEvent::IsAutoRepeat),
62               AutoRepeatMatches);
63COMPILE_ASSERT(static_cast<int>(PP_INPUTEVENT_MODIFIER_LEFTBUTTONDOWN) ==
64               static_cast<int>(WebInputEvent::LeftButtonDown),
65               LeftButtonMatches);
66COMPILE_ASSERT(static_cast<int>(PP_INPUTEVENT_MODIFIER_MIDDLEBUTTONDOWN) ==
67               static_cast<int>(WebInputEvent::MiddleButtonDown),
68               MiddleButtonMatches);
69COMPILE_ASSERT(static_cast<int>(PP_INPUTEVENT_MODIFIER_RIGHTBUTTONDOWN) ==
70               static_cast<int>(WebInputEvent::RightButtonDown),
71               RightButtonMatches);
72COMPILE_ASSERT(static_cast<int>(PP_INPUTEVENT_MODIFIER_CAPSLOCKKEY) ==
73               static_cast<int>(WebInputEvent::CapsLockOn),
74               CapsLockMatches);
75COMPILE_ASSERT(static_cast<int>(PP_INPUTEVENT_MODIFIER_NUMLOCKKEY) ==
76               static_cast<int>(WebInputEvent::NumLockOn),
77               NumLockMatches);
78COMPILE_ASSERT(static_cast<int>(PP_INPUTEVENT_MODIFIER_ISLEFT) ==
79               static_cast<int>(WebInputEvent::IsLeft),
80               LeftMatches);
81COMPILE_ASSERT(static_cast<int>(PP_INPUTEVENT_MODIFIER_ISRIGHT) ==
82               static_cast<int>(WebInputEvent::IsRight),
83               RightMatches);
84
85PP_InputEvent_Type ConvertEventTypes(WebInputEvent::Type wetype) {
86  switch (wetype) {
87    case WebInputEvent::MouseDown:
88      return PP_INPUTEVENT_TYPE_MOUSEDOWN;
89    case WebInputEvent::MouseUp:
90      return PP_INPUTEVENT_TYPE_MOUSEUP;
91    case WebInputEvent::MouseMove:
92      return PP_INPUTEVENT_TYPE_MOUSEMOVE;
93    case WebInputEvent::MouseEnter:
94      return PP_INPUTEVENT_TYPE_MOUSEENTER;
95    case WebInputEvent::MouseLeave:
96      return PP_INPUTEVENT_TYPE_MOUSELEAVE;
97    case WebInputEvent::ContextMenu:
98      return PP_INPUTEVENT_TYPE_CONTEXTMENU;
99    case WebInputEvent::MouseWheel:
100      return PP_INPUTEVENT_TYPE_WHEEL;
101    case WebInputEvent::RawKeyDown:
102      return PP_INPUTEVENT_TYPE_RAWKEYDOWN;
103    case WebInputEvent::KeyDown:
104      return PP_INPUTEVENT_TYPE_KEYDOWN;
105    case WebInputEvent::KeyUp:
106      return PP_INPUTEVENT_TYPE_KEYUP;
107    case WebInputEvent::Char:
108      return PP_INPUTEVENT_TYPE_CHAR;
109    case WebInputEvent::TouchStart:
110      return PP_INPUTEVENT_TYPE_TOUCHSTART;
111    case WebInputEvent::TouchMove:
112      return PP_INPUTEVENT_TYPE_TOUCHMOVE;
113    case WebInputEvent::TouchEnd:
114      return PP_INPUTEVENT_TYPE_TOUCHEND;
115    case WebInputEvent::TouchCancel:
116      return PP_INPUTEVENT_TYPE_TOUCHCANCEL;
117    case WebInputEvent::Undefined:
118    default:
119      return PP_INPUTEVENT_TYPE_UNDEFINED;
120  }
121}
122
123// Generates a PP_InputEvent with the fields common to all events, as well as
124// the event type from the given web event. Event-specific fields will be zero
125// initialized.
126InputEventData GetEventWithCommonFieldsAndType(const WebInputEvent& web_event) {
127  InputEventData result;
128  result.event_type = ConvertEventTypes(web_event.type);
129  result.event_time_stamp = EventTimeToPPTimeTicks(web_event.timeStampSeconds);
130  result.usb_key_code = 0;
131  return result;
132}
133
134void AppendKeyEvent(const WebInputEvent& event,
135                    std::vector<InputEventData>* result_events) {
136  const WebKeyboardEvent& key_event =
137      static_cast<const WebKeyboardEvent&>(event);
138  InputEventData result = GetEventWithCommonFieldsAndType(event);
139  result.event_modifiers = key_event.modifiers;
140  result.key_code = key_event.windowsKeyCode;
141  result.usb_key_code = UsbKeyCodeForKeyboardEvent(key_event);
142  result_events->push_back(result);
143}
144
145void AppendCharEvent(const WebInputEvent& event,
146                     std::vector<InputEventData>* result_events) {
147  const WebKeyboardEvent& key_event =
148      static_cast<const WebKeyboardEvent&>(event);
149
150  // This is a bit complex, the input event will normally just have one 16-bit
151  // character in it, but may be zero or more than one. The text array is
152  // just padded with 0 values for the unused ones, but is not necessarily
153  // null-terminated.
154  //
155  // Here we see how many UTF-16 characters we have.
156  size_t utf16_char_count = 0;
157  while (utf16_char_count < WebKeyboardEvent::textLengthCap &&
158         key_event.text[utf16_char_count])
159    utf16_char_count++;
160
161  // Make a separate InputEventData for each Unicode character in the input.
162  base::i18n::UTF16CharIterator iter(key_event.text, utf16_char_count);
163  while (!iter.end()) {
164    InputEventData result = GetEventWithCommonFieldsAndType(event);
165    result.event_modifiers = key_event.modifiers;
166    base::WriteUnicodeCharacter(iter.get(), &result.character_text);
167
168    result_events->push_back(result);
169    iter.Advance();
170  }
171}
172
173void AppendMouseEvent(const WebInputEvent& event,
174                      std::vector<InputEventData>* result_events) {
175  COMPILE_ASSERT(static_cast<int>(WebMouseEvent::ButtonNone) ==
176                 static_cast<int>(PP_INPUTEVENT_MOUSEBUTTON_NONE),
177                 MouseNone);
178  COMPILE_ASSERT(static_cast<int>(WebMouseEvent::ButtonLeft) ==
179                 static_cast<int>(PP_INPUTEVENT_MOUSEBUTTON_LEFT),
180                 MouseLeft);
181  COMPILE_ASSERT(static_cast<int>(WebMouseEvent::ButtonRight) ==
182                 static_cast<int>(PP_INPUTEVENT_MOUSEBUTTON_RIGHT),
183                 MouseRight);
184  COMPILE_ASSERT(static_cast<int>(WebMouseEvent::ButtonMiddle) ==
185                 static_cast<int>(PP_INPUTEVENT_MOUSEBUTTON_MIDDLE),
186                 MouseMiddle);
187
188  const WebMouseEvent& mouse_event =
189      static_cast<const WebMouseEvent&>(event);
190  InputEventData result = GetEventWithCommonFieldsAndType(event);
191  result.event_modifiers = mouse_event.modifiers;
192  if (mouse_event.type == WebInputEvent::MouseDown ||
193      mouse_event.type == WebInputEvent::MouseMove ||
194      mouse_event.type == WebInputEvent::MouseUp) {
195    result.mouse_button =
196        static_cast<PP_InputEvent_MouseButton>(mouse_event.button);
197  }
198  result.mouse_position.x = mouse_event.x;
199  result.mouse_position.y = mouse_event.y;
200  result.mouse_click_count = mouse_event.clickCount;
201  result.mouse_movement.x = mouse_event.movementX;
202  result.mouse_movement.y = mouse_event.movementY;
203  result_events->push_back(result);
204}
205
206void AppendMouseWheelEvent(const WebInputEvent& event,
207                           std::vector<InputEventData>* result_events) {
208  const WebMouseWheelEvent& mouse_wheel_event =
209      static_cast<const WebMouseWheelEvent&>(event);
210  InputEventData result = GetEventWithCommonFieldsAndType(event);
211  result.event_modifiers = mouse_wheel_event.modifiers;
212  result.wheel_delta.x = mouse_wheel_event.deltaX;
213  result.wheel_delta.y = mouse_wheel_event.deltaY;
214  result.wheel_ticks.x = mouse_wheel_event.wheelTicksX;
215  result.wheel_ticks.y = mouse_wheel_event.wheelTicksY;
216  result.wheel_scroll_by_page = !!mouse_wheel_event.scrollByPage;
217  result_events->push_back(result);
218}
219
220void SetPPTouchPoints(const WebTouchPoint* touches, uint32_t touches_length,
221                      std::vector<PP_TouchPoint>* result) {
222  for (uint32_t i = 0; i < touches_length; i++) {
223    const WebTouchPoint& touch_point = touches[i];
224    PP_TouchPoint pp_pt;
225    pp_pt.id = touch_point.id;
226    pp_pt.position.x = touch_point.position.x;
227    pp_pt.position.y = touch_point.position.y;
228    pp_pt.radius.x = touch_point.radiusX;
229    pp_pt.radius.y = touch_point.radiusY;
230    pp_pt.rotation_angle = touch_point.rotationAngle;
231    pp_pt.pressure = touch_point.force;
232    result->push_back(pp_pt);
233  }
234}
235
236void AppendTouchEvent(const WebInputEvent& event,
237                      std::vector<InputEventData>* result_events) {
238  const WebTouchEvent& touch_event =
239      reinterpret_cast<const WebTouchEvent&>(event);
240
241  InputEventData result = GetEventWithCommonFieldsAndType(event);
242  SetPPTouchPoints(touch_event.touches, touch_event.touchesLength,
243                   &result.touches);
244  SetPPTouchPoints(touch_event.changedTouches, touch_event.changedTouchesLength,
245                   &result.changed_touches);
246  SetPPTouchPoints(touch_event.targetTouches, touch_event.targetTouchesLength,
247                   &result.target_touches);
248
249  result_events->push_back(result);
250}
251
252// Structure used to map touch point id's to touch states.  Since the pepper
253// touch event structure does not have states for individual touch points and
254// instead relies on the event type in combination with the set of touch lists,
255// we have to set the state for the changed touches to be the same as the event
256// type and all others to be 'stationary.'
257typedef std::map<uint32_t, WebTouchPoint::State> TouchStateMap;
258
259void SetWebTouchPoints(const std::vector<PP_TouchPoint>& pp_touches,
260                       const TouchStateMap& states_map,
261                       WebTouchPoint* web_touches,
262                       uint32_t* web_touches_length) {
263
264  for (uint32_t i = 0; i < pp_touches.size() &&
265       i < WebTouchEvent::touchesLengthCap; i++) {
266    WebTouchPoint pt;
267    const PP_TouchPoint& pp_pt = pp_touches[i];
268    pt.id = pp_pt.id;
269
270    if (states_map.find(pt.id) == states_map.end())
271      pt.state = WebTouchPoint::StateStationary;
272    else
273      pt.state = states_map.find(pt.id)->second;
274
275    pt.position.x = pp_pt.position.x;
276    pt.position.y = pp_pt.position.y;
277    // TODO bug:http://code.google.com/p/chromium/issues/detail?id=93902
278    pt.screenPosition.x = 0;
279    pt.screenPosition.y = 0;
280    pt.force = pp_pt.pressure;
281    pt.radiusX = pp_pt.radius.x;
282    pt.radiusY = pp_pt.radius.y;
283    pt.rotationAngle = pp_pt.rotation_angle;
284    web_touches[i] = pt;
285    (*web_touches_length)++;
286  }
287}
288
289WebTouchEvent* BuildTouchEvent(const InputEventData& event) {
290  WebTouchEvent* web_event = new WebTouchEvent();
291  WebTouchPoint::State state = WebTouchPoint::StateUndefined;
292  switch (event.event_type) {
293    case PP_INPUTEVENT_TYPE_TOUCHSTART:
294      web_event->type = WebInputEvent::TouchStart;
295      state = WebTouchPoint::StatePressed;
296      break;
297    case PP_INPUTEVENT_TYPE_TOUCHMOVE:
298      web_event->type = WebInputEvent::TouchMove;
299      state = WebTouchPoint::StateMoved;
300      break;
301    case PP_INPUTEVENT_TYPE_TOUCHEND:
302      web_event->type = WebInputEvent::TouchEnd;
303      state = WebTouchPoint::StateReleased;
304      break;
305    case PP_INPUTEVENT_TYPE_TOUCHCANCEL:
306      web_event->type = WebInputEvent::TouchCancel;
307      state = WebTouchPoint::StateCancelled;
308      break;
309    default:
310      NOTREACHED();
311  }
312
313  TouchStateMap states_map;
314  for (uint32_t i = 0; i < event.changed_touches.size(); i++)
315    states_map[event.changed_touches[i].id] = state;
316
317  web_event->timeStampSeconds = PPTimeTicksToEventTime(event.event_time_stamp);
318
319  SetWebTouchPoints(event.changed_touches, states_map,
320                    web_event->changedTouches,
321                    &web_event->changedTouchesLength);
322
323  SetWebTouchPoints(event.touches, states_map, web_event->touches,
324                    &web_event->touchesLength);
325
326  SetWebTouchPoints(event.target_touches, states_map, web_event->targetTouches,
327                    &web_event->targetTouchesLength);
328
329  if (web_event->type == WebInputEvent::TouchEnd ||
330      web_event->type == WebInputEvent::TouchCancel) {
331    SetWebTouchPoints(event.changed_touches, states_map,
332                      web_event->touches, &web_event->touchesLength);
333    SetWebTouchPoints(event.changed_touches, states_map,
334                      web_event->targetTouches,
335                      &web_event->targetTouchesLength);
336  }
337
338  return web_event;
339}
340
341WebKeyboardEvent* BuildKeyEvent(const InputEventData& event) {
342  WebKeyboardEvent* key_event = new WebKeyboardEvent();
343  switch (event.event_type) {
344    case PP_INPUTEVENT_TYPE_RAWKEYDOWN:
345      key_event->type = WebInputEvent::RawKeyDown;
346      break;
347    case PP_INPUTEVENT_TYPE_KEYDOWN:
348      key_event->type = WebInputEvent::KeyDown;
349      break;
350    case PP_INPUTEVENT_TYPE_KEYUP:
351      key_event->type = WebInputEvent::KeyUp;
352      break;
353    default:
354      NOTREACHED();
355  }
356  key_event->timeStampSeconds = PPTimeTicksToEventTime(event.event_time_stamp);
357  key_event->modifiers = event.event_modifiers;
358  key_event->windowsKeyCode = event.key_code;
359  key_event->setKeyIdentifierFromWindowsKeyCode();
360  return key_event;
361}
362
363WebKeyboardEvent* BuildCharEvent(const InputEventData& event) {
364  WebKeyboardEvent* key_event = new WebKeyboardEvent();
365  key_event->type = WebInputEvent::Char;
366  key_event->timeStampSeconds = PPTimeTicksToEventTime(event.event_time_stamp);
367  key_event->modifiers = event.event_modifiers;
368
369  // Make sure to not read beyond the buffer in case some bad code doesn't
370  // NULL-terminate it (this is called from plugins).
371  size_t text_length_cap = WebKeyboardEvent::textLengthCap;
372  base::string16 text16 = UTF8ToUTF16(event.character_text);
373
374  memset(key_event->text, 0, text_length_cap);
375  memset(key_event->unmodifiedText, 0, text_length_cap);
376  for (size_t i = 0;
377       i < std::min(text_length_cap, text16.size());
378       ++i)
379    key_event->text[i] = text16[i];
380  return key_event;
381}
382
383WebMouseEvent* BuildMouseEvent(const InputEventData& event) {
384  WebMouseEvent* mouse_event = new WebMouseEvent();
385  switch (event.event_type) {
386    case PP_INPUTEVENT_TYPE_MOUSEDOWN:
387      mouse_event->type = WebInputEvent::MouseDown;
388      break;
389    case PP_INPUTEVENT_TYPE_MOUSEUP:
390      mouse_event->type = WebInputEvent::MouseUp;
391      break;
392    case PP_INPUTEVENT_TYPE_MOUSEMOVE:
393      mouse_event->type = WebInputEvent::MouseMove;
394      break;
395    case PP_INPUTEVENT_TYPE_MOUSEENTER:
396      mouse_event->type = WebInputEvent::MouseEnter;
397      break;
398    case PP_INPUTEVENT_TYPE_MOUSELEAVE:
399      mouse_event->type = WebInputEvent::MouseLeave;
400      break;
401    case PP_INPUTEVENT_TYPE_CONTEXTMENU:
402      mouse_event->type = WebInputEvent::ContextMenu;
403      break;
404    default:
405      NOTREACHED();
406  }
407  mouse_event->timeStampSeconds =
408      PPTimeTicksToEventTime(event.event_time_stamp);
409  mouse_event->modifiers = event.event_modifiers;
410  mouse_event->button =
411      static_cast<WebMouseEvent::Button>(event.mouse_button);
412  if (mouse_event->type == WebInputEvent::MouseMove) {
413    if (mouse_event->modifiers & WebInputEvent::LeftButtonDown)
414      mouse_event->button = WebMouseEvent::ButtonLeft;
415    else if (mouse_event->modifiers & WebInputEvent::MiddleButtonDown)
416      mouse_event->button = WebMouseEvent::ButtonMiddle;
417    else if (mouse_event->modifiers & WebInputEvent::RightButtonDown)
418      mouse_event->button = WebMouseEvent::ButtonRight;
419  }
420  mouse_event->x = event.mouse_position.x;
421  mouse_event->y = event.mouse_position.y;
422  mouse_event->clickCount = event.mouse_click_count;
423  mouse_event->movementX = event.mouse_movement.x;
424  mouse_event->movementY = event.mouse_movement.y;
425  return mouse_event;
426}
427
428WebMouseWheelEvent* BuildMouseWheelEvent(const InputEventData& event) {
429  WebMouseWheelEvent* mouse_wheel_event = new WebMouseWheelEvent();
430  mouse_wheel_event->type = WebInputEvent::MouseWheel;
431  mouse_wheel_event->timeStampSeconds =
432      PPTimeTicksToEventTime(event.event_time_stamp);
433  mouse_wheel_event->modifiers = event.event_modifiers;
434  mouse_wheel_event->deltaX = event.wheel_delta.x;
435  mouse_wheel_event->deltaY = event.wheel_delta.y;
436  mouse_wheel_event->wheelTicksX = event.wheel_ticks.x;
437  mouse_wheel_event->wheelTicksY = event.wheel_ticks.y;
438  mouse_wheel_event->scrollByPage = event.wheel_scroll_by_page;
439  return mouse_wheel_event;
440}
441
442#if !defined(OS_WIN)
443#define VK_RETURN         0x0D
444
445#define VK_PRIOR          0x21
446#define VK_NEXT           0x22
447#define VK_END            0x23
448#define VK_HOME           0x24
449#define VK_LEFT           0x25
450#define VK_UP             0x26
451#define VK_RIGHT          0x27
452#define VK_DOWN           0x28
453#define VK_SNAPSHOT       0x2C
454#define VK_INSERT         0x2D
455#define VK_DELETE         0x2E
456
457#define VK_APPS           0x5D
458
459#define VK_F1             0x70
460#endif
461
462// Convert a character string to a Windows virtual key code. Adapted from
463// src/third_party/WebKit/Tools/DumpRenderTree/chromium/EventSender.cpp. This
464// is used by CreateSimulatedWebInputEvents to convert keyboard events.
465void GetKeyCode(const std::string& char_text,
466                WebUChar* code,
467                WebUChar* text,
468                bool* needs_shift_modifier,
469                bool* generate_char) {
470  WebUChar vk_code = 0;
471  WebUChar vk_text = 0;
472  *needs_shift_modifier = false;
473  *generate_char = false;
474  if ("\n" == char_text) {
475    vk_text = vk_code = VK_RETURN;
476    *generate_char = true;
477  } else if ("rightArrow" == char_text) {
478    vk_code = VK_RIGHT;
479  } else if ("downArrow" == char_text) {
480    vk_code = VK_DOWN;
481  } else if ("leftArrow" == char_text) {
482    vk_code = VK_LEFT;
483  } else if ("upArrow" == char_text) {
484    vk_code = VK_UP;
485  } else if ("insert" == char_text) {
486    vk_code = VK_INSERT;
487  } else if ("delete" == char_text) {
488    vk_code = VK_DELETE;
489  } else if ("pageUp" == char_text) {
490    vk_code = VK_PRIOR;
491  } else if ("pageDown" == char_text) {
492    vk_code = VK_NEXT;
493  } else if ("home" == char_text) {
494    vk_code = VK_HOME;
495  } else if ("end" == char_text) {
496    vk_code = VK_END;
497  } else if ("printScreen" == char_text) {
498    vk_code = VK_SNAPSHOT;
499  } else if ("menu" == char_text) {
500    vk_code = VK_APPS;
501  } else {
502    // Compare the input string with the function-key names defined by the
503    // DOM spec (i.e. "F1",...,"F24").
504    for (int i = 1; i <= 24; ++i) {
505      std::string functionKeyName = base::StringPrintf("F%d", i);
506      if (functionKeyName == char_text) {
507        vk_code = VK_F1 + (i - 1);
508        break;
509      }
510    }
511    if (!vk_code) {
512      WebString web_char_text =
513          WebString::fromUTF8(char_text.data(), char_text.size());
514      DCHECK_EQ(web_char_text.length(), 1U);
515      vk_text = vk_code = web_char_text.at(0);
516      *needs_shift_modifier =
517          (vk_code & 0xFF) >= 'A' && (vk_code & 0xFF) <= 'Z';
518      if ((vk_code & 0xFF) >= 'a' && (vk_code & 0xFF) <= 'z')
519          vk_code -= 'a' - 'A';
520      *generate_char = true;
521    }
522  }
523
524  *code = vk_code;
525  *text = vk_text;
526}
527
528}  // namespace
529
530void CreateInputEventData(const WebInputEvent& event,
531                          std::vector<InputEventData>* result) {
532  result->clear();
533
534  switch (event.type) {
535    case WebInputEvent::MouseDown:
536    case WebInputEvent::MouseUp:
537    case WebInputEvent::MouseMove:
538    case WebInputEvent::MouseEnter:
539    case WebInputEvent::MouseLeave:
540    case WebInputEvent::ContextMenu:
541      AppendMouseEvent(event, result);
542      break;
543    case WebInputEvent::MouseWheel:
544      AppendMouseWheelEvent(event, result);
545      break;
546    case WebInputEvent::RawKeyDown:
547    case WebInputEvent::KeyDown:
548    case WebInputEvent::KeyUp:
549      AppendKeyEvent(event, result);
550      break;
551    case WebInputEvent::Char:
552      AppendCharEvent(event, result);
553      break;
554    case WebInputEvent::TouchStart:
555    case WebInputEvent::TouchMove:
556    case WebInputEvent::TouchEnd:
557    case WebInputEvent::TouchCancel:
558      AppendTouchEvent(event, result);
559      break;
560    case WebInputEvent::Undefined:
561    default:
562      break;
563  }
564}
565
566WebInputEvent* CreateWebInputEvent(const InputEventData& event) {
567  scoped_ptr<WebInputEvent> web_input_event;
568  switch (event.event_type) {
569    case PP_INPUTEVENT_TYPE_UNDEFINED:
570      return NULL;
571    case PP_INPUTEVENT_TYPE_MOUSEDOWN:
572    case PP_INPUTEVENT_TYPE_MOUSEUP:
573    case PP_INPUTEVENT_TYPE_MOUSEMOVE:
574    case PP_INPUTEVENT_TYPE_MOUSEENTER:
575    case PP_INPUTEVENT_TYPE_MOUSELEAVE:
576    case PP_INPUTEVENT_TYPE_CONTEXTMENU:
577      web_input_event.reset(BuildMouseEvent(event));
578      break;
579    case PP_INPUTEVENT_TYPE_WHEEL:
580      web_input_event.reset(BuildMouseWheelEvent(event));
581      break;
582    case PP_INPUTEVENT_TYPE_RAWKEYDOWN:
583    case PP_INPUTEVENT_TYPE_KEYDOWN:
584    case PP_INPUTEVENT_TYPE_KEYUP:
585      web_input_event.reset(BuildKeyEvent(event));
586      break;
587    case PP_INPUTEVENT_TYPE_CHAR:
588      web_input_event.reset(BuildCharEvent(event));
589      break;
590    case PP_INPUTEVENT_TYPE_IME_COMPOSITION_START:
591    case PP_INPUTEVENT_TYPE_IME_COMPOSITION_UPDATE:
592    case PP_INPUTEVENT_TYPE_IME_COMPOSITION_END:
593    case PP_INPUTEVENT_TYPE_IME_TEXT:
594      // TODO(kinaba) implement in WebKit an event structure to handle
595      // composition events.
596      NOTREACHED();
597      break;
598    case PP_INPUTEVENT_TYPE_TOUCHSTART:
599    case PP_INPUTEVENT_TYPE_TOUCHMOVE:
600    case PP_INPUTEVENT_TYPE_TOUCHEND:
601    case PP_INPUTEVENT_TYPE_TOUCHCANCEL:
602      web_input_event.reset(BuildTouchEvent(event));
603      break;
604  }
605
606  return web_input_event.release();
607}
608
609// Generate a coherent sequence of input events to simulate a user event.
610// From src/third_party/WebKit/Tools/DumpRenderTree/chromium/EventSender.cpp.
611std::vector<linked_ptr<WebInputEvent> > CreateSimulatedWebInputEvents(
612    const ::ppapi::InputEventData& event,
613    int plugin_x,
614    int plugin_y) {
615  std::vector<linked_ptr<WebInputEvent> > events;
616  linked_ptr<WebInputEvent> original_event(CreateWebInputEvent(event));
617
618  switch (event.event_type) {
619    case PP_INPUTEVENT_TYPE_MOUSEDOWN:
620    case PP_INPUTEVENT_TYPE_MOUSEUP:
621    case PP_INPUTEVENT_TYPE_MOUSEMOVE:
622    case PP_INPUTEVENT_TYPE_MOUSEENTER:
623    case PP_INPUTEVENT_TYPE_MOUSELEAVE:
624    case PP_INPUTEVENT_TYPE_TOUCHSTART:
625    case PP_INPUTEVENT_TYPE_TOUCHMOVE:
626    case PP_INPUTEVENT_TYPE_TOUCHEND:
627    case PP_INPUTEVENT_TYPE_TOUCHCANCEL:
628      events.push_back(original_event);
629      break;
630
631    case PP_INPUTEVENT_TYPE_WHEEL: {
632      WebMouseWheelEvent* web_mouse_wheel_event =
633          static_cast<WebMouseWheelEvent*>(original_event.get());
634      web_mouse_wheel_event->x = plugin_x;
635      web_mouse_wheel_event->y = plugin_y;
636      events.push_back(original_event);
637      break;
638    }
639
640    case PP_INPUTEVENT_TYPE_RAWKEYDOWN:
641    case PP_INPUTEVENT_TYPE_KEYDOWN:
642    case PP_INPUTEVENT_TYPE_KEYUP: {
643      // Windows key down events should always be "raw" to avoid an ASSERT.
644#if defined(OS_WIN)
645      WebKeyboardEvent* web_keyboard_event =
646          static_cast<WebKeyboardEvent*>(original_event.get());
647      if (web_keyboard_event->type == WebInputEvent::KeyDown)
648        web_keyboard_event->type = WebInputEvent::RawKeyDown;
649#endif
650      events.push_back(original_event);
651      break;
652    }
653
654    case PP_INPUTEVENT_TYPE_CHAR: {
655      WebKeyboardEvent* web_char_event =
656          static_cast<WebKeyboardEvent*>(original_event.get());
657
658      WebUChar code = 0, text = 0;
659      bool needs_shift_modifier = false, generate_char = false;
660      GetKeyCode(event.character_text,
661                 &code,
662                 &text,
663                 &needs_shift_modifier,
664                 &generate_char);
665
666      // Synthesize key down and key up events in all cases.
667      scoped_ptr<WebKeyboardEvent> key_down_event(new WebKeyboardEvent());
668      scoped_ptr<WebKeyboardEvent> key_up_event(new WebKeyboardEvent());
669
670      key_down_event->type = WebInputEvent::RawKeyDown;
671      key_down_event->windowsKeyCode = code;
672      key_down_event->nativeKeyCode = code;
673      if (needs_shift_modifier)
674        key_down_event->modifiers |= WebInputEvent::ShiftKey;
675
676      // If a char event is needed, set the text fields.
677      if (generate_char) {
678        key_down_event->text[0] = text;
679        key_down_event->unmodifiedText[0] = text;
680      }
681      // Convert the key code to a string identifier.
682      key_down_event->setKeyIdentifierFromWindowsKeyCode();
683
684      *key_up_event = *web_char_event = *key_down_event;
685
686      events.push_back(linked_ptr<WebInputEvent>(key_down_event.release()));
687
688      if (generate_char) {
689        web_char_event->type = WebInputEvent::Char;
690        web_char_event->keyIdentifier[0] = '\0';
691        events.push_back(original_event);
692      }
693
694      key_up_event->type = WebInputEvent::KeyUp;
695      events.push_back(linked_ptr<WebInputEvent>(key_up_event.release()));
696      break;
697    }
698
699    default:
700      break;
701  }
702  return events;
703}
704
705PP_InputEvent_Class ClassifyInputEvent(WebInputEvent::Type type) {
706  switch (type) {
707    case WebInputEvent::MouseDown:
708    case WebInputEvent::MouseUp:
709    case WebInputEvent::MouseMove:
710    case WebInputEvent::MouseEnter:
711    case WebInputEvent::MouseLeave:
712    case WebInputEvent::ContextMenu:
713      return PP_INPUTEVENT_CLASS_MOUSE;
714    case WebInputEvent::MouseWheel:
715      return PP_INPUTEVENT_CLASS_WHEEL;
716    case WebInputEvent::RawKeyDown:
717    case WebInputEvent::KeyDown:
718    case WebInputEvent::KeyUp:
719    case WebInputEvent::Char:
720      return PP_INPUTEVENT_CLASS_KEYBOARD;
721    case WebInputEvent::TouchCancel:
722    case WebInputEvent::TouchEnd:
723    case WebInputEvent::TouchMove:
724    case WebInputEvent::TouchStart:
725      return PP_INPUTEVENT_CLASS_TOUCH;
726    case WebInputEvent::Undefined:
727    default:
728      NOTREACHED();
729      return PP_InputEvent_Class(0);
730  }
731}
732
733}  // namespace content
734