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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "content/browser/web_contents/web_contents_drag_win.h" | 5 #include "content/browser/web_contents/web_contents_drag_win.h" |
6 | 6 |
7 #include <windows.h> | 7 #include <windows.h> |
8 | 8 |
9 #include <string> | 9 #include <string> |
10 | 10 |
11 #include "base/bind.h" | 11 #include "base/bind.h" |
12 #include "base/file_util.h" | 12 #include "base/file_util.h" |
13 #include "base/files/file_path.h" | 13 #include "base/files/file_path.h" |
14 #include "base/message_loop.h" | 14 #include "base/message_loop.h" |
15 #include "base/pickle.h" | 15 #include "base/pickle.h" |
16 #include "base/threading/platform_thread.h" | 16 #include "base/threading/platform_thread.h" |
17 #include "base/threading/thread.h" | 17 #include "base/threading/thread.h" |
18 #include "base/utf_string_conversions.h" | 18 #include "base/utf_string_conversions.h" |
19 #include "content/browser/download/drag_download_file.h" | 19 #include "content/browser/download/drag_download_file.h" |
20 #include "content/browser/download/drag_download_util.h" | 20 #include "content/browser/download/drag_download_util.h" |
21 #include "content/browser/renderer_host/render_widget_host_view_win.h" | |
21 #include "content/browser/web_contents/web_drag_dest_win.h" | 22 #include "content/browser/web_contents/web_drag_dest_win.h" |
22 #include "content/browser/web_contents/web_drag_source_win.h" | 23 #include "content/browser/web_contents/web_drag_source_win.h" |
23 #include "content/browser/web_contents/web_drag_utils_win.h" | 24 #include "content/browser/web_contents/web_drag_utils_win.h" |
24 #include "content/public/browser/browser_thread.h" | 25 #include "content/public/browser/browser_thread.h" |
25 #include "content/public/browser/content_browser_client.h" | 26 #include "content/public/browser/content_browser_client.h" |
26 #include "content/public/browser/web_contents.h" | 27 #include "content/public/browser/web_contents.h" |
27 #include "content/public/browser/web_contents_view.h" | 28 #include "content/public/browser/web_contents_view.h" |
28 #include "content/public/browser/web_drag_dest_delegate.h" | 29 #include "content/public/browser/web_drag_dest_delegate.h" |
29 #include "net/base/net_util.h" | 30 #include "net/base/net_util.h" |
30 #include "third_party/skia/include/core/SkBitmap.h" | 31 #include "third_party/skia/include/core/SkBitmap.h" |
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44 using WebKit::WebDragOperationMove; | 45 using WebKit::WebDragOperationMove; |
45 | 46 |
46 namespace content { | 47 namespace content { |
47 namespace { | 48 namespace { |
48 | 49 |
49 bool run_do_drag_drop = true; | 50 bool run_do_drag_drop = true; |
50 | 51 |
51 HHOOK msg_hook = NULL; | 52 HHOOK msg_hook = NULL; |
52 DWORD drag_out_thread_id = 0; | 53 DWORD drag_out_thread_id = 0; |
53 bool mouse_up_received = false; | 54 bool mouse_up_received = false; |
55 // True if the drag-drop is initiated by touch event. | |
56 bool touch_initiated_drag_drop = false; | |
54 | 57 |
55 LRESULT CALLBACK MsgFilterProc(int code, WPARAM wparam, LPARAM lparam) { | 58 LRESULT CALLBACK MsgFilterProc(int code, WPARAM wparam, LPARAM lparam) { |
56 if (code == base::MessagePumpForUI::kMessageFilterCode && | 59 if (code == base::MessagePumpForUI::kMessageFilterCode && |
57 !mouse_up_received) { | 60 !mouse_up_received) { |
58 MSG* msg = reinterpret_cast<MSG*>(lparam); | 61 MSG* msg = reinterpret_cast<MSG*>(lparam); |
59 // We do not care about WM_SYSKEYDOWN and WM_SYSKEYUP because when ALT key | 62 // We do not care about WM_SYSKEYDOWN and WM_SYSKEYUP because when ALT key |
60 // is pressed down on drag-and-drop, it means to create a link. | 63 // is pressed down on drag-and-drop, it means to create a link. |
61 if (msg->message == WM_MOUSEMOVE || msg->message == WM_LBUTTONUP || | 64 if (msg->message == WM_MOUSEMOVE || msg->message == WM_LBUTTONUP || |
62 msg->message == WM_KEYDOWN || msg->message == WM_KEYUP) { | 65 msg->message == WM_KEYDOWN || msg->message == WM_KEYUP) { |
63 // Forward the message from the UI thread to the drag-and-drop thread. | 66 // Forward the message from the UI thread to the drag-and-drop thread. |
64 PostThreadMessage(drag_out_thread_id, | 67 PostThreadMessage(drag_out_thread_id, |
65 msg->message, | 68 msg->message, |
66 msg->wParam, | 69 msg->wParam, |
67 msg->lParam); | 70 msg->lParam); |
68 | 71 |
69 // If the left button is up, we do not need to forward the message any | 72 // If the left button is up, we do not need to forward the message |
70 // more. | 73 // any more. |
71 if (msg->message == WM_LBUTTONUP || !(GetKeyState(VK_LBUTTON) & 0x8000)) | 74 if (msg->message == WM_LBUTTONUP || !(GetKeyState(VK_LBUTTON) & 0x8000)) |
72 mouse_up_received = true; | 75 mouse_up_received = true; |
73 | 76 |
77 if (touch_initiated_drag_drop) { | |
78 // In case of touch-initiated drag, we need to take care of right | |
79 // mouse up event since a mouse right button down event is triggered | |
80 // programmatically for DoDragDrop running. | |
81 if (msg->message == WM_RBUTTONUP) | |
dcheng
2013/05/28 20:34:02
Nit: I think you can just fold this into line 64-6
Hongbo Min
2013/05/29 06:08:04
Done.
girard
2013/05/29 18:57:52
Is this code even reachable given the test in line
Hongbo Min
2013/05/30 01:36:03
Fixed.
| |
82 PostThreadMessage(drag_out_thread_id, | |
83 msg->message, | |
84 msg->wParam, | |
85 msg->lParam); | |
86 | |
87 if (msg->message == WM_RBUTTONUP || !(GetKeyState(VK_RBUTTON) & 0x8000)) | |
88 mouse_up_received = true; | |
89 } | |
90 | |
74 return TRUE; | 91 return TRUE; |
75 } | 92 } |
76 } | 93 } |
77 return CallNextHookEx(msg_hook, code, wparam, lparam); | 94 return CallNextHookEx(msg_hook, code, wparam, lparam); |
78 } | 95 } |
79 | 96 |
80 void EnableBackgroundDraggingSupport(DWORD thread_id) { | 97 void EnableBackgroundDraggingSupport(DWORD thread_id) { |
81 // Install a hook procedure to monitor the messages so that we can forward | 98 // Install a hook procedure to monitor the messages so that we can forward |
82 // the appropriate ones to the background thread. | 99 // the appropriate ones to the background thread. |
83 drag_out_thread_id = thread_id; | 100 drag_out_thread_id = thread_id; |
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154 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); | 171 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); |
155 DCHECK(!drag_drop_thread_.get()); | 172 DCHECK(!drag_drop_thread_.get()); |
156 } | 173 } |
157 | 174 |
158 void WebContentsDragWin::StartDragging(const WebDropData& drop_data, | 175 void WebContentsDragWin::StartDragging(const WebDropData& drop_data, |
159 WebDragOperationsMask ops, | 176 WebDragOperationsMask ops, |
160 const gfx::ImageSkia& image, | 177 const gfx::ImageSkia& image, |
161 const gfx::Vector2d& image_offset) { | 178 const gfx::Vector2d& image_offset) { |
162 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); | 179 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); |
163 | 180 |
164 drag_source_ = new WebDragSource(source_window_, web_contents_); | 181 RenderWidgetHostViewWin* rwhv = |
182 static_cast<RenderWidgetHostViewWin*> | |
183 (web_contents_->GetRenderWidgetHostView()); | |
dcheng
2013/05/28 20:34:02
Nit: ( on previous line.
Hongbo Min
2013/05/29 06:08:04
Done.
| |
184 | |
185 ui::DragDropTypes::DragEventSource event_source; | |
186 if (rwhv->in_long_press_gesture()) { | |
187 event_source = ui::DragDropTypes::DRAG_EVENT_SOURCE_TOUCH; | |
188 touch_initiated_drag_drop = true; | |
189 } | |
190 else { | |
191 event_source = ui::DragDropTypes::DRAG_EVENT_SOURCE_MOUSE; | |
192 touch_initiated_drag_drop = false; | |
193 } | |
194 | |
195 drag_source_ = new WebDragSource(source_window_, web_contents_, event_source); | |
165 | 196 |
166 const GURL& page_url = web_contents_->GetURL(); | 197 const GURL& page_url = web_contents_->GetURL(); |
167 const std::string& page_encoding = web_contents_->GetEncoding(); | 198 const std::string& page_encoding = web_contents_->GetEncoding(); |
168 | 199 |
169 // If it is not drag-out, do the drag-and-drop in the current UI thread. | 200 // If it is not drag-out, do the drag-and-drop in the current UI thread. |
170 if (drop_data.download_metadata.empty()) { | 201 if (drop_data.download_metadata.empty()) { |
171 if (DoDragging(drop_data, ops, page_url, page_encoding, | 202 if (DoDragging(drop_data, ops, page_url, page_encoding, |
172 image, image_offset)) | 203 image, image_offset)) |
173 EndDragging(); | 204 EndDragging(); |
174 return; | 205 return; |
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308 } | 339 } |
309 | 340 |
310 bool WebContentsDragWin::DoDragging(const WebDropData& drop_data, | 341 bool WebContentsDragWin::DoDragging(const WebDropData& drop_data, |
311 WebDragOperationsMask ops, | 342 WebDragOperationsMask ops, |
312 const GURL& page_url, | 343 const GURL& page_url, |
313 const std::string& page_encoding, | 344 const std::string& page_encoding, |
314 const gfx::ImageSkia& image, | 345 const gfx::ImageSkia& image, |
315 const gfx::Vector2d& image_offset) { | 346 const gfx::Vector2d& image_offset) { |
316 ui::OSExchangeData data; | 347 ui::OSExchangeData data; |
317 | 348 |
349 RenderWidgetHostViewWin* rwhv = | |
350 static_cast<RenderWidgetHostViewWin*>( | |
351 web_contents_->GetRenderWidgetHostView()); | |
352 // If RWHV has a valid long press gesture, since DoDragDrop will run into | |
353 // itself loop and start a dragging session if and only if a mouse button | |
354 // is down and then moves, so we need to programmatically send out | |
355 // mouse down event and adjust the cursor position for DoDragDrop. | |
356 if (rwhv->in_long_press_gesture()) | |
357 SendMouseEventForTouchDnD(); | |
358 | |
318 if (!drop_data.download_metadata.empty()) { | 359 if (!drop_data.download_metadata.empty()) { |
319 PrepareDragForDownload(drop_data, &data, page_url, page_encoding); | 360 PrepareDragForDownload(drop_data, &data, page_url, page_encoding); |
320 | 361 |
321 // Set the observer. | 362 // Set the observer. |
322 ui::OSExchangeDataProviderWin::GetDataObjectImpl(data)->set_observer(this); | 363 ui::OSExchangeDataProviderWin::GetDataObjectImpl(data)->set_observer(this); |
323 } | 364 } |
324 | 365 |
325 // We set the file contents before the URL because the URL also sets file | 366 // We set the file contents before the URL because the URL also sets file |
326 // contents (to a .URL shortcut). We want to prefer file content data over | 367 // contents (to a .URL shortcut). We want to prefer file content data over |
327 // a shortcut so we add it first. | 368 // a shortcut so we add it first. |
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405 | 446 |
406 drag_source_->CancelDrag(); | 447 drag_source_->CancelDrag(); |
407 } | 448 } |
408 | 449 |
409 void WebContentsDragWin::CloseThread() { | 450 void WebContentsDragWin::CloseThread() { |
410 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); | 451 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); |
411 | 452 |
412 drag_drop_thread_.reset(); | 453 drag_drop_thread_.reset(); |
413 } | 454 } |
414 | 455 |
456 void WebContentsDragWin::SendMouseEventForTouchDnD() { | |
457 static const int kMaxAbsoluteCoordinate = 65535; | |
458 | |
459 RenderWidgetHostViewWin* rwhv = | |
460 static_cast<RenderWidgetHostViewWin*>( | |
461 web_contents_->GetRenderWidgetHostView()); | |
462 | |
463 if (!rwhv) | |
464 return; | |
465 | |
466 int screen_width = ::GetSystemMetrics(SM_CXSCREEN); | |
467 int screen_height = ::GetSystemMetrics(SM_CYSCREEN); | |
dcheng
2013/05/28 20:34:02
Nit: extra space.
Hongbo Min
2013/05/29 06:08:04
Use gfx::Screen and gfx::Display API instead now.
| |
468 gfx::Point last_touch_position = rwhv->GetLastTouchEventLocation(); | |
469 | |
470 // Map the screen coordinate to the normalized absolute coordinate. | |
471 int absolute_x = | |
472 last_touch_position.x() * kMaxAbsoluteCoordinate / screen_width; | |
473 int absolute_y = | |
474 last_touch_position.y() * kMaxAbsoluteCoordinate / screen_height; | |
475 | |
476 // Send MOUSEEVENTF_RIGHTDOWN event followed by MOUSEEVENTF_MOVE event. | |
477 // The reason why not to merge these 2 mouse events into one is, we don't | |
478 // want DoDragDrop to get mouse event firstly which lead to drop the drag | |
479 // source. Once a touch point is removed from screen after long press, | |
480 // a MOUSEEVENTF_RIGHTUP event will be sent out, so we send the down event | |
481 // paired with it to complete DoDragDrop session. | |
482 INPUT input = { 0 }; | |
483 input.type = INPUT_MOUSE; | |
484 input.mi.dwFlags = MOUSEEVENTF_RIGHTDOWN | MOUSEEVENTF_ABSOLUTE; | |
485 input.mi.dx = absolute_x; | |
486 input.mi.dy = absolute_y; | |
487 ::SendInput(1, &input, sizeof(input)); | |
488 | |
489 // Send MOUSEEVENTF_MOVE input event to set cursor to the right position. | |
490 input.mi.dwFlags = MOUSEEVENTF_MOVE | MOUSEEVENTF_ABSOLUTE; | |
491 ::SendInput(1, &input, sizeof(input)); | |
492 } | |
493 | |
415 void WebContentsDragWin::OnWaitForData() { | 494 void WebContentsDragWin::OnWaitForData() { |
416 DCHECK(drag_drop_thread_id_ == base::PlatformThread::CurrentId()); | 495 DCHECK(drag_drop_thread_id_ == base::PlatformThread::CurrentId()); |
417 | 496 |
418 // When the left button is release and we start to wait for the data, end | 497 // When the left button is release and we start to wait for the data, end |
419 // the dragging before DoDragDrop returns. This makes the page leave the drag | 498 // the dragging before DoDragDrop returns. This makes the page leave the drag |
420 // mode so that it can start to process the normal input events. | 499 // mode so that it can start to process the normal input events. |
421 BrowserThread::PostTask( | 500 BrowserThread::PostTask( |
422 BrowserThread::UI, | 501 BrowserThread::UI, |
423 FROM_HERE, | 502 FROM_HERE, |
424 base::Bind(&WebContentsDragWin::EndDragging, this)); | 503 base::Bind(&WebContentsDragWin::EndDragging, this)); |
425 } | 504 } |
426 | 505 |
427 void WebContentsDragWin::OnDataObjectDisposed() { | 506 void WebContentsDragWin::OnDataObjectDisposed() { |
428 DCHECK(drag_drop_thread_id_ == base::PlatformThread::CurrentId()); | 507 DCHECK(drag_drop_thread_id_ == base::PlatformThread::CurrentId()); |
429 | 508 |
430 // The drag-and-drop thread is only closed after OLE is done with | 509 // The drag-and-drop thread is only closed after OLE is done with |
431 // DataObjectImpl. | 510 // DataObjectImpl. |
432 BrowserThread::PostTask( | 511 BrowserThread::PostTask( |
433 BrowserThread::UI, | 512 BrowserThread::UI, |
434 FROM_HERE, | 513 FROM_HERE, |
435 base::Bind(&WebContentsDragWin::CloseThread, this)); | 514 base::Bind(&WebContentsDragWin::CloseThread, this)); |
436 } | 515 } |
437 | 516 |
438 // static | 517 // static |
439 void WebContentsDragWin::DisableDragDropForTesting() { | 518 void WebContentsDragWin::DisableDragDropForTesting() { |
440 run_do_drag_drop = false; | 519 run_do_drag_drop = false; |
441 } | 520 } |
442 | 521 |
443 } // namespace content | 522 } // namespace content |
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