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| 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 "ui/base/event.h" | |
| 6 | |
| 7 #if defined(USE_X11) | |
| 8 #include <X11/Xlib.h> | |
| 9 #endif | |
| 10 | |
| 11 #include <cstring> | |
| 12 | |
| 13 #include "ui/base/keycodes/keyboard_code_conversion.h" | |
| 14 #include "ui/gfx/point3.h" | |
| 15 #include "ui/gfx/interpolated_transform.h" | |
| 16 #include "ui/gfx/transform.h" | |
| 17 | |
| 18 #if defined(USE_X11) | |
| 19 #include "ui/base/keycodes/keyboard_code_conversion_x.h" | |
| 20 #endif | |
| 21 | |
| 22 namespace { | |
| 23 | |
| 24 base::NativeEvent CopyNativeEvent(const base::NativeEvent& event) { | |
| 25 #if defined(USE_X11) | |
| 26 XEvent* copy = new XEvent; | |
| 27 *copy = *event; | |
| 28 return copy; | |
| 29 #elif defined(OS_WIN) | |
| 30 return event; | |
| 31 #else | |
| 32 NOTREACHED() << | |
| 33 "Don't know how to copy base::NativeEvent for this platform"; | |
| 34 return NULL; | |
| 35 #endif | |
| 36 } | |
| 37 | |
| 38 } // namespace | |
| 39 | |
| 40 namespace ui { | |
| 41 | |
| 42 Event::~Event() { | |
| 43 #if defined(USE_X11) | |
| 44 if (delete_native_event_) | |
| 45 delete native_event_; | |
| 46 #endif | |
| 47 } | |
| 48 | |
| 49 bool Event::HasNativeEvent() const { | |
| 50 base::NativeEvent null_event; | |
| 51 std::memset(&null_event, 0, sizeof(null_event)); | |
| 52 return !!std::memcmp(&native_event_, &null_event, sizeof(null_event)); | |
| 53 } | |
| 54 | |
| 55 Event::Event(EventType type, int flags) | |
| 56 : type_(type), | |
| 57 time_stamp_(base::Time::NowFromSystemTime() - base::Time()), | |
| 58 flags_(flags), | |
| 59 delete_native_event_(false) { | |
| 60 Init(); | |
| 61 } | |
| 62 | |
| 63 Event::Event(const base::NativeEvent& native_event, | |
| 64 EventType type, | |
| 65 int flags) | |
| 66 : type_(type), | |
| 67 time_stamp_(EventTimeFromNative(native_event)), | |
| 68 flags_(flags), | |
| 69 delete_native_event_(false) { | |
| 70 InitWithNativeEvent(native_event); | |
| 71 } | |
| 72 | |
| 73 Event::Event(const Event& copy) | |
| 74 : native_event_(copy.native_event_), | |
| 75 type_(copy.type_), | |
| 76 time_stamp_(copy.time_stamp_), | |
| 77 flags_(copy.flags_), | |
| 78 delete_native_event_(false) { | |
| 79 } | |
| 80 | |
| 81 void Event::Init() { | |
| 82 std::memset(&native_event_, 0, sizeof(native_event_)); | |
| 83 } | |
| 84 | |
| 85 void Event::InitWithNativeEvent(const base::NativeEvent& native_event) { | |
| 86 native_event_ = native_event; | |
| 87 } | |
| 88 | |
| 89 LocatedEvent::~LocatedEvent() { | |
| 90 } | |
| 91 | |
| 92 LocatedEvent::LocatedEvent(const base::NativeEvent& native_event) | |
| 93 : Event(native_event, | |
| 94 EventTypeFromNative(native_event), | |
| 95 EventFlagsFromNative(native_event)), | |
| 96 location_(EventLocationFromNative(native_event)), | |
| 97 root_location_(location_) { | |
| 98 } | |
| 99 | |
| 100 LocatedEvent::LocatedEvent(EventType type, | |
| 101 const gfx::Point& location, | |
| 102 const gfx::Point& root_location, | |
| 103 int flags) | |
| 104 : Event(type, flags), | |
| 105 location_(location), | |
| 106 root_location_(root_location) { | |
| 107 } | |
| 108 | |
| 109 void LocatedEvent::UpdateForRootTransform(const Transform& root_transform) { | |
| 110 // Transform has to be done at root level. | |
| 111 DCHECK_EQ(root_location_.x(), location_.x()); | |
| 112 DCHECK_EQ(root_location_.y(), location_.y()); | |
| 113 gfx::Point3f p(location_); | |
| 114 root_transform.TransformPointReverse(p); | |
| 115 root_location_ = location_ = p.AsPoint(); | |
| 116 } | |
| 117 | |
| 118 MouseEvent::MouseEvent(const base::NativeEvent& native_event) | |
| 119 : LocatedEvent(native_event) { | |
| 120 if (type() == ET_MOUSE_PRESSED) | |
| 121 SetClickCount(GetRepeatCount(*this)); | |
| 122 } | |
| 123 | |
| 124 MouseEvent::MouseEvent(EventType type, | |
| 125 const gfx::Point& location, | |
| 126 const gfx::Point& root_location, | |
| 127 int flags) | |
| 128 : LocatedEvent(type, location, root_location, flags) { | |
| 129 } | |
| 130 | |
| 131 // static | |
| 132 bool MouseEvent::IsRepeatedClickEvent( | |
| 133 const MouseEvent& event1, | |
| 134 const MouseEvent& event2) { | |
| 135 // These values match the Windows defaults. | |
| 136 static const int kDoubleClickTimeMS = 500; | |
| 137 static const int kDoubleClickWidth = 4; | |
| 138 static const int kDoubleClickHeight = 4; | |
| 139 | |
| 140 if (event1.type() != ET_MOUSE_PRESSED || | |
| 141 event2.type() != ET_MOUSE_PRESSED) | |
| 142 return false; | |
| 143 | |
| 144 // Compare flags, but ignore EF_IS_DOUBLE_CLICK to allow triple clicks. | |
| 145 if ((event1.flags() & ~EF_IS_DOUBLE_CLICK) != | |
| 146 (event2.flags() & ~EF_IS_DOUBLE_CLICK)) | |
| 147 return false; | |
| 148 | |
| 149 base::TimeDelta time_difference = event2.time_stamp() - event1.time_stamp(); | |
| 150 | |
| 151 if (time_difference.InMilliseconds() > kDoubleClickTimeMS) | |
| 152 return false; | |
| 153 | |
| 154 if (abs(event2.x() - event1.x()) > kDoubleClickWidth / 2) | |
| 155 return false; | |
| 156 | |
| 157 if (abs(event2.y() - event1.y()) > kDoubleClickHeight / 2) | |
| 158 return false; | |
| 159 | |
| 160 return true; | |
| 161 } | |
| 162 | |
| 163 // static | |
| 164 int MouseEvent::GetRepeatCount(const MouseEvent& event) { | |
| 165 int click_count = 1; | |
| 166 if (last_click_event_) { | |
| 167 if (IsRepeatedClickEvent(*last_click_event_, event)) | |
| 168 click_count = last_click_event_->GetClickCount() + 1; | |
| 169 delete last_click_event_; | |
| 170 } | |
| 171 last_click_event_ = new MouseEvent(event.native_event()); | |
| 172 if (click_count > 3) | |
| 173 click_count = 3; | |
| 174 last_click_event_->SetClickCount(click_count); | |
| 175 return click_count; | |
| 176 } | |
| 177 | |
| 178 // static | |
| 179 MouseEvent* MouseEvent::last_click_event_ = NULL; | |
| 180 | |
| 181 int MouseEvent::GetClickCount() const { | |
| 182 if (type() != ET_MOUSE_PRESSED) | |
| 183 return 0; | |
| 184 | |
| 185 if (flags() & EF_IS_TRIPLE_CLICK) | |
| 186 return 3; | |
| 187 else if (flags() & EF_IS_DOUBLE_CLICK) | |
| 188 return 2; | |
| 189 else | |
| 190 return 1; | |
| 191 } | |
| 192 | |
| 193 void MouseEvent::SetClickCount(int click_count) { | |
| 194 if (type() != ET_MOUSE_PRESSED) | |
| 195 return; | |
| 196 | |
| 197 DCHECK(click_count > 0); | |
| 198 DCHECK(click_count <= 3); | |
| 199 | |
| 200 int f = flags(); | |
| 201 switch (click_count) { | |
| 202 case 1: | |
| 203 f &= ~EF_IS_DOUBLE_CLICK; | |
| 204 f &= ~EF_IS_TRIPLE_CLICK; | |
| 205 break; | |
| 206 case 2: | |
| 207 f |= EF_IS_DOUBLE_CLICK; | |
| 208 f &= ~EF_IS_TRIPLE_CLICK; | |
| 209 break; | |
| 210 case 3: | |
| 211 f &= ~EF_IS_DOUBLE_CLICK; | |
| 212 f |= EF_IS_TRIPLE_CLICK; | |
| 213 break; | |
| 214 } | |
| 215 set_flags(f); | |
| 216 } | |
| 217 | |
| 218 TouchEventImpl::TouchEventImpl(const base::NativeEvent& native_event) | |
| 219 : LocatedEvent(native_event), | |
| 220 touch_id_(ui::GetTouchId(native_event)), | |
| 221 radius_x_(GetTouchRadiusX(native_event)), | |
| 222 radius_y_(GetTouchRadiusY(native_event)), | |
| 223 rotation_angle_(GetTouchAngle(native_event)), | |
| 224 force_(GetTouchForce(native_event)) { | |
| 225 } | |
| 226 | |
| 227 TouchEventImpl::TouchEventImpl(EventType type, | |
| 228 const gfx::Point& location, | |
| 229 int touch_id, | |
| 230 base::TimeDelta time_stamp) | |
| 231 : LocatedEvent(type, location, location, 0), | |
| 232 touch_id_(touch_id), | |
| 233 radius_x_(0.0f), | |
| 234 radius_y_(0.0f), | |
| 235 rotation_angle_(0.0f), | |
| 236 force_(0.0f) { | |
| 237 set_time_stamp(time_stamp); | |
| 238 } | |
| 239 | |
| 240 TouchEventImpl::~TouchEventImpl() { | |
| 241 } | |
| 242 | |
| 243 void TouchEventImpl::UpdateForRootTransform(const Transform& root_transform) { | |
| 244 LocatedEvent::UpdateForRootTransform(root_transform); | |
| 245 gfx::Point3f scale; | |
| 246 InterpolatedTransform::FactorTRS(root_transform, NULL, NULL, &scale); | |
| 247 if (scale.x()) | |
| 248 radius_x_ /= scale.x(); | |
| 249 if (scale.y()) | |
| 250 radius_y_ /= scale.y(); | |
| 251 } | |
| 252 | |
| 253 EventType TouchEventImpl::GetEventType() const { | |
| 254 return type(); | |
| 255 } | |
| 256 | |
| 257 gfx::Point TouchEventImpl::GetLocation() const { | |
| 258 return location(); | |
| 259 } | |
| 260 | |
| 261 int TouchEventImpl::GetTouchId() const { | |
| 262 return touch_id_; | |
| 263 } | |
| 264 | |
| 265 int TouchEventImpl::GetEventFlags() const { | |
| 266 return flags(); | |
| 267 } | |
| 268 | |
| 269 base::TimeDelta TouchEventImpl::GetTimestamp() const { | |
| 270 return time_stamp(); | |
| 271 } | |
| 272 | |
| 273 float TouchEventImpl::RadiusX() const { | |
| 274 return radius_x_; | |
| 275 } | |
| 276 | |
| 277 float TouchEventImpl::RadiusY() const { | |
| 278 return radius_y_; | |
| 279 } | |
| 280 | |
| 281 float TouchEventImpl::RotationAngle() const { | |
| 282 return rotation_angle_; | |
| 283 } | |
| 284 | |
| 285 float TouchEventImpl::Force() const { | |
| 286 return force_; | |
| 287 } | |
| 288 | |
| 289 KeyEvent::KeyEvent(const base::NativeEvent& native_event, bool is_char) | |
| 290 : Event(native_event, | |
| 291 EventTypeFromNative(native_event), | |
| 292 EventFlagsFromNative(native_event)), | |
| 293 key_code_(KeyboardCodeFromNative(native_event)), | |
| 294 is_char_(is_char), | |
| 295 character_(0), | |
| 296 unmodified_character_(0) { | |
| 297 } | |
| 298 | |
| 299 KeyEvent::KeyEvent(EventType type, | |
| 300 KeyboardCode key_code, | |
| 301 int flags) | |
| 302 : Event(type, flags), | |
| 303 key_code_(key_code), | |
| 304 is_char_(false), | |
| 305 character_(GetCharacterFromKeyCode(key_code, flags)), | |
| 306 unmodified_character_(0) { | |
| 307 } | |
| 308 | |
| 309 uint16 KeyEvent::GetCharacter() const { | |
| 310 if (character_) | |
| 311 return character_; | |
| 312 | |
| 313 #if defined(OS_WIN) | |
| 314 return (native_event().message == WM_CHAR) ? key_code_ : | |
| 315 GetCharacterFromKeyCode(key_code_, flags()); | |
| 316 #elif defined(USE_X11) | |
| 317 if (!native_event()) | |
| 318 return GetCharacterFromKeyCode(key_code_, flags()); | |
| 319 | |
| 320 DCHECK(native_event()->type == KeyPress || | |
| 321 native_event()->type == KeyRelease); | |
| 322 | |
| 323 uint16 ch = 0; | |
| 324 if (!IsControlDown()) | |
| 325 ch = GetCharacterFromXEvent(native_event()); | |
| 326 return ch ? ch : GetCharacterFromKeyCode(key_code_, flags()); | |
| 327 #else | |
| 328 NOTIMPLEMENTED(); | |
| 329 return 0; | |
| 330 #endif | |
| 331 } | |
| 332 | |
| 333 uint16 KeyEvent::GetUnmodifiedCharacter() const { | |
| 334 if (unmodified_character_) | |
| 335 return unmodified_character_; | |
| 336 | |
| 337 #if defined(OS_WIN) | |
| 338 // Looks like there is no way to get unmodified character on Windows. | |
| 339 return (native_event().message == WM_CHAR) ? key_code_ : | |
| 340 GetCharacterFromKeyCode(key_code_, flags() & EF_SHIFT_DOWN); | |
| 341 #elif defined(USE_X11) | |
| 342 if (!native_event()) | |
| 343 return GetCharacterFromKeyCode(key_code_, flags() & EF_SHIFT_DOWN); | |
| 344 | |
| 345 DCHECK(native_event()->type == KeyPress || | |
| 346 native_event()->type == KeyRelease); | |
| 347 | |
| 348 static const unsigned int kIgnoredModifiers = ControlMask | LockMask | | |
| 349 Mod1Mask | Mod2Mask | Mod3Mask | Mod4Mask | Mod5Mask; | |
| 350 | |
| 351 XKeyEvent copy = native_event()->xkey; // bit-wise copy is safe. | |
| 352 // We can't use things like (native_event()->xkey.state & ShiftMask), as it | |
| 353 // may mask out bits used by X11 internally. | |
| 354 copy.state &= ~kIgnoredModifiers; | |
| 355 uint16 ch = GetCharacterFromXEvent(reinterpret_cast<XEvent*>(©)); | |
| 356 return ch ? ch : GetCharacterFromKeyCode(key_code_, flags() & EF_SHIFT_DOWN); | |
| 357 #else | |
| 358 NOTIMPLEMENTED(); | |
| 359 return 0; | |
| 360 #endif | |
| 361 } | |
| 362 | |
| 363 KeyEvent* KeyEvent::Copy() { | |
| 364 KeyEvent* copy = new KeyEvent(::CopyNativeEvent(native_event()), is_char()); | |
| 365 #if defined(USE_X11) | |
| 366 copy->set_delete_native_event(true); | |
| 367 #endif | |
| 368 return copy; | |
| 369 } | |
| 370 | |
| 371 TranslatedKeyEvent::TranslatedKeyEvent(const base::NativeEvent& native_event, | |
| 372 bool is_char) | |
| 373 : KeyEvent(native_event, is_char) { | |
| 374 set_type(type() == ET_KEY_PRESSED ? | |
| 375 ET_TRANSLATED_KEY_PRESS : ET_TRANSLATED_KEY_RELEASE); | |
| 376 } | |
| 377 | |
| 378 TranslatedKeyEvent::TranslatedKeyEvent(bool is_press, | |
| 379 KeyboardCode key_code, | |
| 380 int flags) | |
| 381 : KeyEvent((is_press ? ET_TRANSLATED_KEY_PRESS : ET_TRANSLATED_KEY_RELEASE), | |
| 382 key_code, | |
| 383 flags) { | |
| 384 } | |
| 385 | |
| 386 void TranslatedKeyEvent::ConvertToKeyEvent() { | |
| 387 set_type(type() == ET_TRANSLATED_KEY_PRESS ? | |
| 388 ET_KEY_PRESSED : ET_KEY_RELEASED); | |
| 389 } | |
| 390 | |
| 391 ScrollEvent::ScrollEvent(const base::NativeEvent& native_event) | |
| 392 : MouseEvent(native_event) { | |
| 393 if (type() == ET_SCROLL) { | |
| 394 GetScrollOffsets(native_event, &x_offset_, &y_offset_); | |
| 395 double start, end; | |
| 396 GetGestureTimes(native_event, &start, &end); | |
| 397 } else if (type() == ET_SCROLL_FLING_START) { | |
| 398 bool is_cancel; | |
| 399 GetFlingData(native_event, &x_offset_, &y_offset_, &is_cancel); | |
| 400 } | |
| 401 } | |
| 402 | |
| 403 GestureEventImpl::GestureEventImpl(EventType type, | |
| 404 int x, | |
| 405 int y, | |
| 406 int flags, | |
| 407 base::Time time_stamp, | |
| 408 const GestureEventDetails& details, | |
| 409 unsigned int touch_ids_bitfield) | |
| 410 : LocatedEvent(type, gfx::Point(x, y), gfx::Point(x, y), flags), | |
| 411 details_(details), | |
| 412 touch_ids_bitfield_(touch_ids_bitfield) { | |
| 413 set_time_stamp(base::TimeDelta::FromSeconds(time_stamp.ToDoubleT())); | |
| 414 } | |
| 415 | |
| 416 GestureEventImpl::~GestureEventImpl() { | |
| 417 } | |
| 418 | |
| 419 int GestureEventImpl::GetLowestTouchId() const { | |
| 420 if (touch_ids_bitfield_ == 0) | |
| 421 return -1; | |
| 422 int i = -1; | |
| 423 // Find the index of the least significant 1 bit | |
| 424 while (!(1 << ++i & touch_ids_bitfield_)); | |
| 425 return i; | |
| 426 } | |
| 427 | |
| 428 } // namespace ui | |
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Chromium Code Reviews
Issue 10827162:
Revert 149916 - Copy aura::Event into ui::Event. (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src/