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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 // Many of these functions are based on those found in | |
| 6 // webkit/port/platform/PasteboardWin.cpp | |
| 7 | |
| 8 #include "ui/base/clipboard/clipboard_win.h" | |
| 9 | |
| 10 #include <shellapi.h> | |
| 11 #include <shlobj.h> | |
| 12 | |
| 13 #include "base/basictypes.h" | |
| 14 #include "base/bind.h" | |
| 15 #include "base/files/file_path.h" | |
| 16 #include "base/logging.h" | |
| 17 #include "base/memory/shared_memory.h" | |
| 18 #include "base/message_loop/message_loop.h" | |
| 19 #include "base/numerics/safe_conversions.h" | |
| 20 #include "base/stl_util.h" | |
| 21 #include "base/strings/string_number_conversions.h" | |
| 22 #include "base/strings/string_util.h" | |
| 23 #include "base/strings/utf_offset_string_conversions.h" | |
| 24 #include "base/strings/utf_string_conversions.h" | |
| 25 #include "base/win/message_window.h" | |
| 26 #include "base/win/scoped_gdi_object.h" | |
| 27 #include "base/win/scoped_hdc.h" | |
| 28 #include "third_party/skia/include/core/SkBitmap.h" | |
| 29 #include "ui/base/clipboard/clipboard_util_win.h" | |
| 30 #include "ui/base/clipboard/custom_data_helper.h" | |
| 31 #include "ui/gfx/canvas.h" | |
| 32 #include "ui/gfx/size.h" | |
| 33 | |
| 34 namespace ui { | |
| 35 | |
| 36 namespace { | |
| 37 | |
| 38 // A scoper to manage acquiring and automatically releasing the clipboard. | |
| 39 class ScopedClipboard { | |
| 40 public: | |
| 41 ScopedClipboard() : opened_(false) { } | |
| 42 | |
| 43 ~ScopedClipboard() { | |
| 44 if (opened_) | |
| 45 Release(); | |
| 46 } | |
| 47 | |
| 48 bool Acquire(HWND owner) { | |
| 49 const int kMaxAttemptsToOpenClipboard = 5; | |
| 50 | |
| 51 if (opened_) { | |
| 52 NOTREACHED(); | |
| 53 return false; | |
| 54 } | |
| 55 | |
| 56 // Attempt to open the clipboard, which will acquire the Windows clipboard | |
| 57 // lock. This may fail if another process currently holds this lock. | |
| 58 // We're willing to try a few times in the hopes of acquiring it. | |
| 59 // | |
| 60 // This turns out to be an issue when using remote desktop because the | |
| 61 // rdpclip.exe process likes to read what we've written to the clipboard and | |
| 62 // send it to the RDP client. If we open and close the clipboard in quick | |
| 63 // succession, we might be trying to open it while rdpclip.exe has it open, | |
| 64 // See Bug 815425. | |
| 65 // | |
| 66 // In fact, we believe we'll only spin this loop over remote desktop. In | |
| 67 // normal situations, the user is initiating clipboard operations and there | |
| 68 // shouldn't be contention. | |
| 69 | |
| 70 for (int attempts = 0; attempts < kMaxAttemptsToOpenClipboard; ++attempts) { | |
| 71 // If we didn't manage to open the clipboard, sleep a bit and be hopeful. | |
| 72 if (attempts != 0) | |
| 73 ::Sleep(5); | |
| 74 | |
| 75 if (::OpenClipboard(owner)) { | |
| 76 opened_ = true; | |
| 77 return true; | |
| 78 } | |
| 79 } | |
| 80 | |
| 81 // We failed to acquire the clipboard. | |
| 82 return false; | |
| 83 } | |
| 84 | |
| 85 void Release() { | |
| 86 if (opened_) { | |
| 87 ::CloseClipboard(); | |
| 88 opened_ = false; | |
| 89 } else { | |
| 90 NOTREACHED(); | |
| 91 } | |
| 92 } | |
| 93 | |
| 94 private: | |
| 95 bool opened_; | |
| 96 }; | |
| 97 | |
| 98 bool ClipboardOwnerWndProc(UINT message, | |
| 99 WPARAM wparam, | |
| 100 LPARAM lparam, | |
| 101 LRESULT* result) { | |
| 102 switch (message) { | |
| 103 case WM_RENDERFORMAT: | |
| 104 // This message comes when SetClipboardData was sent a null data handle | |
| 105 // and now it's come time to put the data on the clipboard. | |
| 106 // We always set data, so there isn't a need to actually do anything here. | |
| 107 break; | |
| 108 case WM_RENDERALLFORMATS: | |
| 109 // This message comes when SetClipboardData was sent a null data handle | |
| 110 // and now this application is about to quit, so it must put data on | |
| 111 // the clipboard before it exits. | |
| 112 // We always set data, so there isn't a need to actually do anything here. | |
| 113 break; | |
| 114 case WM_DRAWCLIPBOARD: | |
| 115 break; | |
| 116 case WM_DESTROY: | |
| 117 break; | |
| 118 case WM_CHANGECBCHAIN: | |
| 119 break; | |
| 120 default: | |
| 121 return false; | |
| 122 } | |
| 123 | |
| 124 *result = 0; | |
| 125 return true; | |
| 126 } | |
| 127 | |
| 128 template <typename charT> | |
| 129 HGLOBAL CreateGlobalData(const std::basic_string<charT>& str) { | |
| 130 HGLOBAL data = | |
| 131 ::GlobalAlloc(GMEM_MOVEABLE, ((str.size() + 1) * sizeof(charT))); | |
| 132 if (data) { | |
| 133 charT* raw_data = static_cast<charT*>(::GlobalLock(data)); | |
| 134 memcpy(raw_data, str.data(), str.size() * sizeof(charT)); | |
| 135 raw_data[str.size()] = '\0'; | |
| 136 ::GlobalUnlock(data); | |
| 137 } | |
| 138 return data; | |
| 139 }; | |
| 140 | |
| 141 bool BitmapHasInvalidPremultipliedColors(const SkBitmap& bitmap) { | |
| 142 for (int x = 0; x < bitmap.width(); ++x) { | |
| 143 for (int y = 0; y < bitmap.height(); ++y) { | |
| 144 uint32_t pixel = *bitmap.getAddr32(x, y); | |
| 145 if (SkColorGetR(pixel) > SkColorGetA(pixel) || | |
| 146 SkColorGetG(pixel) > SkColorGetA(pixel) || | |
| 147 SkColorGetB(pixel) > SkColorGetA(pixel)) | |
| 148 return true; | |
| 149 } | |
| 150 } | |
| 151 return false; | |
| 152 } | |
| 153 | |
| 154 void MakeBitmapOpaque(const SkBitmap& bitmap) { | |
| 155 for (int x = 0; x < bitmap.width(); ++x) { | |
| 156 for (int y = 0; y < bitmap.height(); ++y) { | |
| 157 *bitmap.getAddr32(x, y) = SkColorSetA(*bitmap.getAddr32(x, y), 0xFF); | |
| 158 } | |
| 159 } | |
| 160 } | |
| 161 | |
| 162 void ParseBookmarkClipboardFormat(const base::string16& bookmark, | |
| 163 base::string16* title, | |
| 164 std::string* url) { | |
| 165 const base::string16 kDelim = base::ASCIIToUTF16("\r\n"); | |
| 166 | |
| 167 const size_t title_end = bookmark.find_first_of(kDelim); | |
| 168 if (title) | |
| 169 title->assign(bookmark.substr(0, title_end)); | |
| 170 | |
| 171 if (url) { | |
| 172 const size_t url_start = bookmark.find_first_not_of(kDelim, title_end); | |
| 173 if (url_start != base::string16::npos) { | |
| 174 *url = | |
| 175 base::UTF16ToUTF8(bookmark.substr(url_start, base::string16::npos)); | |
| 176 } | |
| 177 } | |
| 178 } | |
| 179 | |
| 180 void FreeData(unsigned int format, HANDLE data) { | |
| 181 if (format == CF_BITMAP) | |
| 182 ::DeleteObject(static_cast<HBITMAP>(data)); | |
| 183 else | |
| 184 ::GlobalFree(data); | |
| 185 } | |
| 186 | |
| 187 } // namespace | |
| 188 | |
| 189 // Clipboard::FormatType implementation. | |
| 190 Clipboard::FormatType::FormatType() : data_() {} | |
| 191 | |
| 192 Clipboard::FormatType::FormatType(UINT native_format) : data_() { | |
| 193 // There's no good way to actually initialize this in the constructor in | |
| 194 // C++03. | |
| 195 data_.cfFormat = static_cast<CLIPFORMAT>(native_format); | |
| 196 data_.dwAspect = DVASPECT_CONTENT; | |
| 197 data_.lindex = -1; | |
| 198 data_.tymed = TYMED_HGLOBAL; | |
| 199 } | |
| 200 | |
| 201 Clipboard::FormatType::FormatType(UINT native_format, LONG index) : data_() { | |
| 202 // There's no good way to actually initialize this in the constructor in | |
| 203 // C++03. | |
| 204 data_.cfFormat = static_cast<CLIPFORMAT>(native_format); | |
| 205 data_.dwAspect = DVASPECT_CONTENT; | |
| 206 data_.lindex = index; | |
| 207 data_.tymed = TYMED_HGLOBAL; | |
| 208 } | |
| 209 | |
| 210 Clipboard::FormatType::~FormatType() { | |
| 211 } | |
| 212 | |
| 213 std::string Clipboard::FormatType::Serialize() const { | |
| 214 return base::IntToString(data_.cfFormat); | |
| 215 } | |
| 216 | |
| 217 // static | |
| 218 Clipboard::FormatType Clipboard::FormatType::Deserialize( | |
| 219 const std::string& serialization) { | |
| 220 int clipboard_format = -1; | |
| 221 if (!base::StringToInt(serialization, &clipboard_format)) { | |
| 222 NOTREACHED(); | |
| 223 return FormatType(); | |
| 224 } | |
| 225 return FormatType(clipboard_format); | |
| 226 } | |
| 227 | |
| 228 bool Clipboard::FormatType::operator<(const FormatType& other) const { | |
| 229 return data_.cfFormat < other.data_.cfFormat; | |
| 230 } | |
| 231 | |
| 232 bool Clipboard::FormatType::Equals(const FormatType& other) const { | |
| 233 return data_.cfFormat == other.data_.cfFormat; | |
| 234 } | |
| 235 | |
| 236 // Various predefined FormatTypes. | |
| 237 // static | |
| 238 Clipboard::FormatType Clipboard::GetFormatType( | |
| 239 const std::string& format_string) { | |
| 240 return FormatType( | |
| 241 ::RegisterClipboardFormat(base::ASCIIToWide(format_string).c_str())); | |
| 242 } | |
| 243 | |
| 244 // static | |
| 245 const Clipboard::FormatType& Clipboard::GetUrlFormatType() { | |
| 246 CR_DEFINE_STATIC_LOCAL( | |
| 247 FormatType, type, (::RegisterClipboardFormat(CFSTR_INETURLA))); | |
| 248 return type; | |
| 249 } | |
| 250 | |
| 251 // static | |
| 252 const Clipboard::FormatType& Clipboard::GetUrlWFormatType() { | |
| 253 CR_DEFINE_STATIC_LOCAL( | |
| 254 FormatType, type, (::RegisterClipboardFormat(CFSTR_INETURLW))); | |
| 255 return type; | |
| 256 } | |
| 257 | |
| 258 // static | |
| 259 const Clipboard::FormatType& Clipboard::GetMozUrlFormatType() { | |
| 260 CR_DEFINE_STATIC_LOCAL( | |
| 261 FormatType, type, (::RegisterClipboardFormat(L"text/x-moz-url"))); | |
| 262 return type; | |
| 263 } | |
| 264 | |
| 265 // static | |
| 266 const Clipboard::FormatType& Clipboard::GetPlainTextFormatType() { | |
| 267 CR_DEFINE_STATIC_LOCAL(FormatType, type, (CF_TEXT)); | |
| 268 return type; | |
| 269 } | |
| 270 | |
| 271 // static | |
| 272 const Clipboard::FormatType& Clipboard::GetPlainTextWFormatType() { | |
| 273 CR_DEFINE_STATIC_LOCAL(FormatType, type, (CF_UNICODETEXT)); | |
| 274 return type; | |
| 275 } | |
| 276 | |
| 277 // static | |
| 278 const Clipboard::FormatType& Clipboard::GetFilenameFormatType() { | |
| 279 CR_DEFINE_STATIC_LOCAL( | |
| 280 FormatType, type, (::RegisterClipboardFormat(CFSTR_FILENAMEA))); | |
| 281 return type; | |
| 282 } | |
| 283 | |
| 284 // static | |
| 285 const Clipboard::FormatType& Clipboard::GetFilenameWFormatType() { | |
| 286 CR_DEFINE_STATIC_LOCAL( | |
| 287 FormatType, type, (::RegisterClipboardFormat(CFSTR_FILENAMEW))); | |
| 288 return type; | |
| 289 } | |
| 290 | |
| 291 // MS HTML Format | |
| 292 // static | |
| 293 const Clipboard::FormatType& Clipboard::GetHtmlFormatType() { | |
| 294 CR_DEFINE_STATIC_LOCAL( | |
| 295 FormatType, type, (::RegisterClipboardFormat(L"HTML Format"))); | |
| 296 return type; | |
| 297 } | |
| 298 | |
| 299 // MS RTF Format | |
| 300 // static | |
| 301 const Clipboard::FormatType& Clipboard::GetRtfFormatType() { | |
| 302 CR_DEFINE_STATIC_LOCAL( | |
| 303 FormatType, type, (::RegisterClipboardFormat(L"Rich Text Format"))); | |
| 304 return type; | |
| 305 } | |
| 306 | |
| 307 // static | |
| 308 const Clipboard::FormatType& Clipboard::GetBitmapFormatType() { | |
| 309 CR_DEFINE_STATIC_LOCAL(FormatType, type, (CF_BITMAP)); | |
| 310 return type; | |
| 311 } | |
| 312 | |
| 313 // Firefox text/html | |
| 314 // static | |
| 315 const Clipboard::FormatType& Clipboard::GetTextHtmlFormatType() { | |
| 316 CR_DEFINE_STATIC_LOCAL( | |
| 317 FormatType, type, (::RegisterClipboardFormat(L"text/html"))); | |
| 318 return type; | |
| 319 } | |
| 320 | |
| 321 // static | |
| 322 const Clipboard::FormatType& Clipboard::GetCFHDropFormatType() { | |
| 323 CR_DEFINE_STATIC_LOCAL(FormatType, type, (CF_HDROP)); | |
| 324 return type; | |
| 325 } | |
| 326 | |
| 327 // static | |
| 328 const Clipboard::FormatType& Clipboard::GetFileDescriptorFormatType() { | |
| 329 CR_DEFINE_STATIC_LOCAL( | |
| 330 FormatType, type, (::RegisterClipboardFormat(CFSTR_FILEDESCRIPTOR))); | |
| 331 return type; | |
| 332 } | |
| 333 | |
| 334 // static | |
| 335 const Clipboard::FormatType& Clipboard::GetFileContentZeroFormatType() { | |
| 336 CR_DEFINE_STATIC_LOCAL( | |
| 337 FormatType, type, (::RegisterClipboardFormat(CFSTR_FILECONTENTS), 0)); | |
| 338 return type; | |
| 339 } | |
| 340 | |
| 341 // static | |
| 342 const Clipboard::FormatType& Clipboard::GetIDListFormatType() { | |
| 343 CR_DEFINE_STATIC_LOCAL( | |
| 344 FormatType, type, (::RegisterClipboardFormat(CFSTR_SHELLIDLIST))); | |
| 345 return type; | |
| 346 } | |
| 347 | |
| 348 // static | |
| 349 const Clipboard::FormatType& Clipboard::GetWebKitSmartPasteFormatType() { | |
| 350 CR_DEFINE_STATIC_LOCAL( | |
| 351 FormatType, | |
| 352 type, | |
| 353 (::RegisterClipboardFormat(L"WebKit Smart Paste Format"))); | |
| 354 return type; | |
| 355 } | |
| 356 | |
| 357 // static | |
| 358 const Clipboard::FormatType& Clipboard::GetWebCustomDataFormatType() { | |
| 359 // TODO(dcheng): This name is temporary. See http://crbug.com/106449. | |
| 360 CR_DEFINE_STATIC_LOCAL( | |
| 361 FormatType, | |
| 362 type, | |
| 363 (::RegisterClipboardFormat(L"Chromium Web Custom MIME Data Format"))); | |
| 364 return type; | |
| 365 } | |
| 366 | |
| 367 // static | |
| 368 const Clipboard::FormatType& Clipboard::GetPepperCustomDataFormatType() { | |
| 369 CR_DEFINE_STATIC_LOCAL( | |
| 370 FormatType, | |
| 371 type, | |
| 372 (::RegisterClipboardFormat(L"Chromium Pepper MIME Data Format"))); | |
| 373 return type; | |
| 374 } | |
| 375 | |
| 376 // Clipboard factory method. | |
| 377 // static | |
| 378 Clipboard* Clipboard::Create() { | |
| 379 return new ClipboardWin; | |
| 380 } | |
| 381 | |
| 382 // ClipboardWin implementation. | |
| 383 ClipboardWin::ClipboardWin() { | |
| 384 if (base::MessageLoopForUI::IsCurrent()) | |
| 385 clipboard_owner_.reset(new base::win::MessageWindow()); | |
| 386 } | |
| 387 | |
| 388 ClipboardWin::~ClipboardWin() { | |
| 389 } | |
| 390 | |
| 391 uint64 ClipboardWin::GetSequenceNumber(ClipboardType type) { | |
| 392 DCHECK_EQ(type, CLIPBOARD_TYPE_COPY_PASTE); | |
| 393 return ::GetClipboardSequenceNumber(); | |
| 394 } | |
| 395 | |
| 396 bool ClipboardWin::IsFormatAvailable(const Clipboard::FormatType& format, | |
| 397 ClipboardType type) const { | |
| 398 DCHECK_EQ(type, CLIPBOARD_TYPE_COPY_PASTE); | |
| 399 return ::IsClipboardFormatAvailable(format.ToFormatEtc().cfFormat) != FALSE; | |
| 400 } | |
| 401 | |
| 402 void ClipboardWin::Clear(ClipboardType type) { | |
| 403 DCHECK_EQ(type, CLIPBOARD_TYPE_COPY_PASTE); | |
| 404 ScopedClipboard clipboard; | |
| 405 if (!clipboard.Acquire(GetClipboardWindow())) | |
| 406 return; | |
| 407 | |
| 408 ::EmptyClipboard(); | |
| 409 } | |
| 410 | |
| 411 void ClipboardWin::ReadAvailableTypes(ClipboardType type, | |
| 412 std::vector<base::string16>* types, | |
| 413 bool* contains_filenames) const { | |
| 414 if (!types || !contains_filenames) { | |
| 415 NOTREACHED(); | |
| 416 return; | |
| 417 } | |
| 418 | |
| 419 types->clear(); | |
| 420 if (::IsClipboardFormatAvailable( | |
| 421 GetPlainTextFormatType().ToFormatEtc().cfFormat)) | |
| 422 types->push_back(base::UTF8ToUTF16(kMimeTypeText)); | |
| 423 if (::IsClipboardFormatAvailable(GetHtmlFormatType().ToFormatEtc().cfFormat)) | |
| 424 types->push_back(base::UTF8ToUTF16(kMimeTypeHTML)); | |
| 425 if (::IsClipboardFormatAvailable(GetRtfFormatType().ToFormatEtc().cfFormat)) | |
| 426 types->push_back(base::UTF8ToUTF16(kMimeTypeRTF)); | |
| 427 if (::IsClipboardFormatAvailable(CF_DIB)) | |
| 428 types->push_back(base::UTF8ToUTF16(kMimeTypePNG)); | |
| 429 *contains_filenames = false; | |
| 430 | |
| 431 // Acquire the clipboard. | |
| 432 ScopedClipboard clipboard; | |
| 433 if (!clipboard.Acquire(GetClipboardWindow())) | |
| 434 return; | |
| 435 | |
| 436 HANDLE hdata = | |
| 437 ::GetClipboardData(GetWebCustomDataFormatType().ToFormatEtc().cfFormat); | |
| 438 if (!hdata) | |
| 439 return; | |
| 440 | |
| 441 ReadCustomDataTypes(::GlobalLock(hdata), ::GlobalSize(hdata), types); | |
| 442 ::GlobalUnlock(hdata); | |
| 443 } | |
| 444 | |
| 445 void ClipboardWin::ReadText(ClipboardType type, base::string16* result) const { | |
| 446 DCHECK_EQ(type, CLIPBOARD_TYPE_COPY_PASTE); | |
| 447 if (!result) { | |
| 448 NOTREACHED(); | |
| 449 return; | |
| 450 } | |
| 451 | |
| 452 result->clear(); | |
| 453 | |
| 454 // Acquire the clipboard. | |
| 455 ScopedClipboard clipboard; | |
| 456 if (!clipboard.Acquire(GetClipboardWindow())) | |
| 457 return; | |
| 458 | |
| 459 HANDLE data = ::GetClipboardData(CF_UNICODETEXT); | |
| 460 if (!data) | |
| 461 return; | |
| 462 | |
| 463 result->assign(static_cast<const base::char16*>(::GlobalLock(data))); | |
| 464 ::GlobalUnlock(data); | |
| 465 } | |
| 466 | |
| 467 void ClipboardWin::ReadAsciiText(ClipboardType type, | |
| 468 std::string* result) const { | |
| 469 DCHECK_EQ(type, CLIPBOARD_TYPE_COPY_PASTE); | |
| 470 if (!result) { | |
| 471 NOTREACHED(); | |
| 472 return; | |
| 473 } | |
| 474 | |
| 475 result->clear(); | |
| 476 | |
| 477 // Acquire the clipboard. | |
| 478 ScopedClipboard clipboard; | |
| 479 if (!clipboard.Acquire(GetClipboardWindow())) | |
| 480 return; | |
| 481 | |
| 482 HANDLE data = ::GetClipboardData(CF_TEXT); | |
| 483 if (!data) | |
| 484 return; | |
| 485 | |
| 486 result->assign(static_cast<const char*>(::GlobalLock(data))); | |
| 487 ::GlobalUnlock(data); | |
| 488 } | |
| 489 | |
| 490 void ClipboardWin::ReadHTML(ClipboardType type, | |
| 491 base::string16* markup, | |
| 492 std::string* src_url, | |
| 493 uint32* fragment_start, | |
| 494 uint32* fragment_end) const { | |
| 495 DCHECK_EQ(type, CLIPBOARD_TYPE_COPY_PASTE); | |
| 496 | |
| 497 markup->clear(); | |
| 498 // TODO(dcheng): Remove these checks, I don't think they should be optional. | |
| 499 DCHECK(src_url); | |
| 500 if (src_url) | |
| 501 src_url->clear(); | |
| 502 *fragment_start = 0; | |
| 503 *fragment_end = 0; | |
| 504 | |
| 505 // Acquire the clipboard. | |
| 506 ScopedClipboard clipboard; | |
| 507 if (!clipboard.Acquire(GetClipboardWindow())) | |
| 508 return; | |
| 509 | |
| 510 HANDLE data = ::GetClipboardData(GetHtmlFormatType().ToFormatEtc().cfFormat); | |
| 511 if (!data) | |
| 512 return; | |
| 513 | |
| 514 std::string cf_html(static_cast<const char*>(::GlobalLock(data))); | |
| 515 ::GlobalUnlock(data); | |
| 516 | |
| 517 size_t html_start = std::string::npos; | |
| 518 size_t start_index = std::string::npos; | |
| 519 size_t end_index = std::string::npos; | |
| 520 ClipboardUtil::CFHtmlExtractMetadata(cf_html, src_url, &html_start, | |
| 521 &start_index, &end_index); | |
| 522 | |
| 523 // This might happen if the contents of the clipboard changed and CF_HTML is | |
| 524 // no longer available. | |
| 525 if (start_index == std::string::npos || | |
| 526 end_index == std::string::npos || | |
| 527 html_start == std::string::npos) | |
| 528 return; | |
| 529 | |
| 530 if (start_index < html_start || end_index < start_index) | |
| 531 return; | |
| 532 | |
| 533 std::vector<size_t> offsets; | |
| 534 offsets.push_back(start_index - html_start); | |
| 535 offsets.push_back(end_index - html_start); | |
| 536 markup->assign(base::UTF8ToUTF16AndAdjustOffsets(cf_html.data() + html_start, | |
| 537 &offsets)); | |
| 538 *fragment_start = base::checked_cast<uint32>(offsets[0]); | |
| 539 *fragment_end = base::checked_cast<uint32>(offsets[1]); | |
| 540 } | |
| 541 | |
| 542 void ClipboardWin::ReadRTF(ClipboardType type, std::string* result) const { | |
| 543 DCHECK_EQ(type, CLIPBOARD_TYPE_COPY_PASTE); | |
| 544 | |
| 545 ReadData(GetRtfFormatType(), result); | |
| 546 } | |
| 547 | |
| 548 SkBitmap ClipboardWin::ReadImage(ClipboardType type) const { | |
| 549 DCHECK_EQ(type, CLIPBOARD_TYPE_COPY_PASTE); | |
| 550 | |
| 551 // Acquire the clipboard. | |
| 552 ScopedClipboard clipboard; | |
| 553 if (!clipboard.Acquire(GetClipboardWindow())) | |
| 554 return SkBitmap(); | |
| 555 | |
| 556 // We use a DIB rather than a DDB here since ::GetObject() with the | |
| 557 // HBITMAP returned from ::GetClipboardData(CF_BITMAP) always reports a color | |
| 558 // depth of 32bpp. | |
| 559 BITMAPINFO* bitmap = static_cast<BITMAPINFO*>(::GetClipboardData(CF_DIB)); | |
| 560 if (!bitmap) | |
| 561 return SkBitmap(); | |
| 562 int color_table_length = 0; | |
| 563 switch (bitmap->bmiHeader.biBitCount) { | |
| 564 case 1: | |
| 565 case 4: | |
| 566 case 8: | |
| 567 color_table_length = bitmap->bmiHeader.biClrUsed | |
| 568 ? bitmap->bmiHeader.biClrUsed | |
| 569 : 1 << bitmap->bmiHeader.biBitCount; | |
| 570 break; | |
| 571 case 16: | |
| 572 case 32: | |
| 573 if (bitmap->bmiHeader.biCompression == BI_BITFIELDS) | |
| 574 color_table_length = 3; | |
| 575 break; | |
| 576 case 24: | |
| 577 break; | |
| 578 default: | |
| 579 NOTREACHED(); | |
| 580 } | |
| 581 const void* bitmap_bits = reinterpret_cast<const char*>(bitmap) | |
| 582 + bitmap->bmiHeader.biSize + color_table_length * sizeof(RGBQUAD); | |
| 583 | |
| 584 gfx::Canvas canvas(gfx::Size(bitmap->bmiHeader.biWidth, | |
| 585 bitmap->bmiHeader.biHeight), | |
| 586 1.0f, | |
| 587 false); | |
| 588 { | |
| 589 skia::ScopedPlatformPaint scoped_platform_paint(canvas.sk_canvas()); | |
| 590 HDC dc = scoped_platform_paint.GetPlatformSurface(); | |
| 591 ::SetDIBitsToDevice(dc, 0, 0, bitmap->bmiHeader.biWidth, | |
| 592 bitmap->bmiHeader.biHeight, 0, 0, 0, | |
| 593 bitmap->bmiHeader.biHeight, bitmap_bits, bitmap, | |
| 594 DIB_RGB_COLORS); | |
| 595 } | |
| 596 // Windows doesn't really handle alpha channels well in many situations. When | |
| 597 // the source image is < 32 bpp, we force the bitmap to be opaque. When the | |
| 598 // source image is 32 bpp, the alpha channel might still contain garbage data. | |
| 599 // Since Windows uses premultiplied alpha, we scan for instances where | |
| 600 // (R, G, B) > A. If there are any invalid premultiplied colors in the image, | |
| 601 // we assume the alpha channel contains garbage and force the bitmap to be | |
| 602 // opaque as well. Note that this heuristic will fail on a transparent bitmap | |
| 603 // containing only black pixels... | |
| 604 const SkBitmap& device_bitmap = | |
| 605 canvas.sk_canvas()->getDevice()->accessBitmap(true); | |
| 606 { | |
| 607 SkAutoLockPixels lock(device_bitmap); | |
| 608 bool has_invalid_alpha_channel = bitmap->bmiHeader.biBitCount < 32 || | |
| 609 BitmapHasInvalidPremultipliedColors(device_bitmap); | |
| 610 if (has_invalid_alpha_channel) { | |
| 611 MakeBitmapOpaque(device_bitmap); | |
| 612 } | |
| 613 } | |
| 614 | |
| 615 return canvas.ExtractImageRep().sk_bitmap(); | |
| 616 } | |
| 617 | |
| 618 void ClipboardWin::ReadCustomData(ClipboardType clipboard_type, | |
| 619 const base::string16& type, | |
| 620 base::string16* result) const { | |
| 621 DCHECK_EQ(clipboard_type, CLIPBOARD_TYPE_COPY_PASTE); | |
| 622 | |
| 623 // Acquire the clipboard. | |
| 624 ScopedClipboard clipboard; | |
| 625 if (!clipboard.Acquire(GetClipboardWindow())) | |
| 626 return; | |
| 627 | |
| 628 HANDLE hdata = | |
| 629 ::GetClipboardData(GetWebCustomDataFormatType().ToFormatEtc().cfFormat); | |
| 630 if (!hdata) | |
| 631 return; | |
| 632 | |
| 633 ReadCustomDataForType(::GlobalLock(hdata), ::GlobalSize(hdata), type, result); | |
| 634 ::GlobalUnlock(hdata); | |
| 635 } | |
| 636 | |
| 637 void ClipboardWin::ReadBookmark(base::string16* title, std::string* url) const { | |
| 638 if (title) | |
| 639 title->clear(); | |
| 640 | |
| 641 if (url) | |
| 642 url->clear(); | |
| 643 | |
| 644 // Acquire the clipboard. | |
| 645 ScopedClipboard clipboard; | |
| 646 if (!clipboard.Acquire(GetClipboardWindow())) | |
| 647 return; | |
| 648 | |
| 649 HANDLE data = ::GetClipboardData(GetUrlWFormatType().ToFormatEtc().cfFormat); | |
| 650 if (!data) | |
| 651 return; | |
| 652 | |
| 653 base::string16 bookmark(static_cast<const base::char16*>(::GlobalLock(data))); | |
| 654 ::GlobalUnlock(data); | |
| 655 | |
| 656 ParseBookmarkClipboardFormat(bookmark, title, url); | |
| 657 } | |
| 658 | |
| 659 void ClipboardWin::ReadData(const FormatType& format, | |
| 660 std::string* result) const { | |
| 661 if (!result) { | |
| 662 NOTREACHED(); | |
| 663 return; | |
| 664 } | |
| 665 | |
| 666 ScopedClipboard clipboard; | |
| 667 if (!clipboard.Acquire(GetClipboardWindow())) | |
| 668 return; | |
| 669 | |
| 670 HANDLE data = ::GetClipboardData(format.ToFormatEtc().cfFormat); | |
| 671 if (!data) | |
| 672 return; | |
| 673 | |
| 674 result->assign(static_cast<const char*>(::GlobalLock(data)), | |
| 675 ::GlobalSize(data)); | |
| 676 ::GlobalUnlock(data); | |
| 677 } | |
| 678 | |
| 679 void ClipboardWin::WriteObjects(ClipboardType type, const ObjectMap& objects) { | |
| 680 DCHECK_EQ(type, CLIPBOARD_TYPE_COPY_PASTE); | |
| 681 | |
| 682 ScopedClipboard clipboard; | |
| 683 if (!clipboard.Acquire(GetClipboardWindow())) | |
| 684 return; | |
| 685 | |
| 686 ::EmptyClipboard(); | |
| 687 | |
| 688 for (ObjectMap::const_iterator iter = objects.begin(); iter != objects.end(); | |
| 689 ++iter) { | |
| 690 DispatchObject(static_cast<ObjectType>(iter->first), iter->second); | |
| 691 } | |
| 692 } | |
| 693 | |
| 694 void ClipboardWin::WriteText(const char* text_data, size_t text_len) { | |
| 695 base::string16 text; | |
| 696 base::UTF8ToUTF16(text_data, text_len, &text); | |
| 697 HGLOBAL glob = CreateGlobalData(text); | |
| 698 | |
| 699 WriteToClipboard(CF_UNICODETEXT, glob); | |
| 700 } | |
| 701 | |
| 702 void ClipboardWin::WriteHTML(const char* markup_data, | |
| 703 size_t markup_len, | |
| 704 const char* url_data, | |
| 705 size_t url_len) { | |
| 706 std::string markup(markup_data, markup_len); | |
| 707 std::string url; | |
| 708 | |
| 709 if (url_len > 0) | |
| 710 url.assign(url_data, url_len); | |
| 711 | |
| 712 std::string html_fragment = ClipboardUtil::HtmlToCFHtml(markup, url); | |
| 713 HGLOBAL glob = CreateGlobalData(html_fragment); | |
| 714 | |
| 715 WriteToClipboard(Clipboard::GetHtmlFormatType().ToFormatEtc().cfFormat, glob); | |
| 716 } | |
| 717 | |
| 718 void ClipboardWin::WriteRTF(const char* rtf_data, size_t data_len) { | |
| 719 WriteData(GetRtfFormatType(), rtf_data, data_len); | |
| 720 } | |
| 721 | |
| 722 void ClipboardWin::WriteBookmark(const char* title_data, | |
| 723 size_t title_len, | |
| 724 const char* url_data, | |
| 725 size_t url_len) { | |
| 726 std::string bookmark(title_data, title_len); | |
| 727 bookmark.append(1, L'\n'); | |
| 728 bookmark.append(url_data, url_len); | |
| 729 | |
| 730 base::string16 wide_bookmark = base::UTF8ToWide(bookmark); | |
| 731 HGLOBAL glob = CreateGlobalData(wide_bookmark); | |
| 732 | |
| 733 WriteToClipboard(GetUrlWFormatType().ToFormatEtc().cfFormat, glob); | |
| 734 } | |
| 735 | |
| 736 void ClipboardWin::WriteWebSmartPaste() { | |
| 737 DCHECK(clipboard_owner_->hwnd() != NULL); | |
| 738 ::SetClipboardData(GetWebKitSmartPasteFormatType().ToFormatEtc().cfFormat, | |
| 739 NULL); | |
| 740 } | |
| 741 | |
| 742 void ClipboardWin::WriteBitmap(const SkBitmap& bitmap) { | |
| 743 HDC dc = ::GetDC(NULL); | |
| 744 | |
| 745 // This doesn't actually cost us a memcpy when the bitmap comes from the | |
| 746 // renderer as we load it into the bitmap using setPixels which just sets a | |
| 747 // pointer. Someone has to memcpy it into GDI, it might as well be us here. | |
| 748 | |
| 749 // TODO(darin): share data in gfx/bitmap_header.cc somehow | |
| 750 BITMAPINFO bm_info = {0}; | |
| 751 bm_info.bmiHeader.biSize = sizeof(BITMAPINFOHEADER); | |
| 752 bm_info.bmiHeader.biWidth = bitmap.width(); | |
| 753 bm_info.bmiHeader.biHeight = -bitmap.height(); // sets vertical orientation | |
| 754 bm_info.bmiHeader.biPlanes = 1; | |
| 755 bm_info.bmiHeader.biBitCount = 32; | |
| 756 bm_info.bmiHeader.biCompression = BI_RGB; | |
| 757 | |
| 758 // ::CreateDIBSection allocates memory for us to copy our bitmap into. | |
| 759 // Unfortunately, we can't write the created bitmap to the clipboard, | |
| 760 // (see http://msdn2.microsoft.com/en-us/library/ms532292.aspx) | |
| 761 void* bits; | |
| 762 HBITMAP source_hbitmap = | |
| 763 ::CreateDIBSection(dc, &bm_info, DIB_RGB_COLORS, &bits, NULL, 0); | |
| 764 | |
| 765 if (bits && source_hbitmap) { | |
| 766 { | |
| 767 SkAutoLockPixels bitmap_lock(bitmap); | |
| 768 // Copy the bitmap out of shared memory and into GDI | |
| 769 memcpy(bits, bitmap.getPixels(), bitmap.getSize()); | |
| 770 } | |
| 771 | |
| 772 // Now we have an HBITMAP, we can write it to the clipboard | |
| 773 WriteBitmapFromHandle(source_hbitmap, | |
| 774 gfx::Size(bitmap.width(), bitmap.height())); | |
| 775 } | |
| 776 | |
| 777 ::DeleteObject(source_hbitmap); | |
| 778 ::ReleaseDC(NULL, dc); | |
| 779 } | |
| 780 | |
| 781 void ClipboardWin::WriteData(const FormatType& format, | |
| 782 const char* data_data, | |
| 783 size_t data_len) { | |
| 784 HGLOBAL hdata = ::GlobalAlloc(GMEM_MOVEABLE, data_len); | |
| 785 if (!hdata) | |
| 786 return; | |
| 787 | |
| 788 char* data = static_cast<char*>(::GlobalLock(hdata)); | |
| 789 memcpy(data, data_data, data_len); | |
| 790 ::GlobalUnlock(data); | |
| 791 WriteToClipboard(format.ToFormatEtc().cfFormat, hdata); | |
| 792 } | |
| 793 | |
| 794 void ClipboardWin::WriteBitmapFromHandle(HBITMAP source_hbitmap, | |
| 795 const gfx::Size& size) { | |
| 796 // We would like to just call ::SetClipboardData on the source_hbitmap, | |
| 797 // but that bitmap might not be of a sort we can write to the clipboard. | |
| 798 // For this reason, we create a new bitmap, copy the bits over, and then | |
| 799 // write that to the clipboard. | |
| 800 | |
| 801 HDC dc = ::GetDC(NULL); | |
| 802 HDC compatible_dc = ::CreateCompatibleDC(NULL); | |
| 803 HDC source_dc = ::CreateCompatibleDC(NULL); | |
| 804 | |
| 805 // This is the HBITMAP we will eventually write to the clipboard | |
| 806 HBITMAP hbitmap = ::CreateCompatibleBitmap(dc, size.width(), size.height()); | |
| 807 if (!hbitmap) { | |
| 808 // Failed to create the bitmap | |
| 809 ::DeleteDC(compatible_dc); | |
| 810 ::DeleteDC(source_dc); | |
| 811 ::ReleaseDC(NULL, dc); | |
| 812 return; | |
| 813 } | |
| 814 | |
| 815 HBITMAP old_hbitmap = (HBITMAP)SelectObject(compatible_dc, hbitmap); | |
| 816 HBITMAP old_source = (HBITMAP)SelectObject(source_dc, source_hbitmap); | |
| 817 | |
| 818 // Now we need to blend it into an HBITMAP we can place on the clipboard | |
| 819 BLENDFUNCTION bf = {AC_SRC_OVER, 0, 255, AC_SRC_ALPHA}; | |
| 820 ::GdiAlphaBlend(compatible_dc, | |
| 821 0, | |
| 822 0, | |
| 823 size.width(), | |
| 824 size.height(), | |
| 825 source_dc, | |
| 826 0, | |
| 827 0, | |
| 828 size.width(), | |
| 829 size.height(), | |
| 830 bf); | |
| 831 | |
| 832 // Clean up all the handles we just opened | |
| 833 ::SelectObject(compatible_dc, old_hbitmap); | |
| 834 ::SelectObject(source_dc, old_source); | |
| 835 ::DeleteObject(old_hbitmap); | |
| 836 ::DeleteObject(old_source); | |
| 837 ::DeleteDC(compatible_dc); | |
| 838 ::DeleteDC(source_dc); | |
| 839 ::ReleaseDC(NULL, dc); | |
| 840 | |
| 841 WriteToClipboard(CF_BITMAP, hbitmap); | |
| 842 } | |
| 843 | |
| 844 void ClipboardWin::WriteToClipboard(unsigned int format, HANDLE handle) { | |
| 845 DCHECK(clipboard_owner_->hwnd() != NULL); | |
| 846 if (handle && !::SetClipboardData(format, handle)) { | |
| 847 DCHECK(ERROR_CLIPBOARD_NOT_OPEN != GetLastError()); | |
| 848 FreeData(format, handle); | |
| 849 } | |
| 850 } | |
| 851 | |
| 852 HWND ClipboardWin::GetClipboardWindow() const { | |
| 853 if (!clipboard_owner_) | |
| 854 return NULL; | |
| 855 | |
| 856 if (clipboard_owner_->hwnd() == NULL) | |
| 857 clipboard_owner_->Create(base::Bind(&ClipboardOwnerWndProc)); | |
| 858 | |
| 859 return clipboard_owner_->hwnd(); | |
| 860 } | |
| 861 | |
| 862 } // namespace ui | |
| OLD | NEW |
|---|
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