101 lines
3.0 KiB
C++
101 lines
3.0 KiB
C++
// Copyright (c) 2011 The Chromium Embedded Framework Authors.
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// Portions copyright (c) 2010 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "libcef/web_drag_source_win.h"
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#include "libcef/web_drag_utils_win.h"
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#include "libcef/cef_thread.h"
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#include "base/bind.h"
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#include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebPoint.h"
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#include "third_party/WebKit/Source/WebKit/chromium/public/WebView.h"
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using WebKit::WebDragOperationNone;
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using WebKit::WebPoint;
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using WebKit::WebView;
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namespace {
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static void GetCursorPositions(gfx::NativeWindow wnd, gfx::Point* client,
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gfx::Point* screen) {
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POINT cursor_pos;
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GetCursorPos(&cursor_pos);
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screen->SetPoint(cursor_pos.x, cursor_pos.y);
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ScreenToClient(wnd, &cursor_pos);
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client->SetPoint(cursor_pos.x, cursor_pos.y);
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}
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} // namespace
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///////////////////////////////////////////////////////////////////////////////
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// WebDragSource, public:
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WebDragSource::WebDragSource(gfx::NativeWindow source_wnd, WebView* view)
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: ui::DragSource(),
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source_wnd_(source_wnd),
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view_(view),
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effect_(DROPEFFECT_NONE) {
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}
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WebDragSource::~WebDragSource() {
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}
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void WebDragSource::OnDragSourceCancel() {
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// Delegate to the UI thread if we do drag-and-drop in the background thread.
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if (!CefThread::CurrentlyOn(CefThread::UI)) {
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CefThread::PostTask(
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CefThread::UI, FROM_HERE,
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base::Bind(&WebDragSource::OnDragSourceCancel, this));
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return;
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}
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if (!view_)
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return;
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gfx::Point client;
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gfx::Point screen;
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GetCursorPositions(source_wnd_, &client, &screen);
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view_->dragSourceEndedAt(client, screen, WebDragOperationNone);
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}
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void WebDragSource::OnDragSourceDrop() {
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// On Windows, we check for drag end in IDropSource::QueryContinueDrag which
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// happens before IDropTarget::Drop is called. HTML5 requires the "dragend"
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// event to happen after the "drop" event. Since Windows calls these two
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// directly after each other we can just post a task to handle the
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// OnDragSourceDrop after the current task.
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CefThread::PostTask(
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CefThread::UI, FROM_HERE,
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base::Bind(&WebDragSource::DelayedOnDragSourceDrop, this));
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}
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void WebDragSource::DelayedOnDragSourceDrop() {
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if (!view_)
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return;
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gfx::Point client;
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gfx::Point screen;
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GetCursorPositions(source_wnd_, &client, &screen);
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view_->dragSourceEndedAt(client, screen,
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web_drag_utils_win::WinDragOpToWebDragOp(effect_));
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}
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void WebDragSource::OnDragSourceMove() {
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// Delegate to the UI thread if we do drag-and-drop in the background thread.
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if (!CefThread::CurrentlyOn(CefThread::UI)) {
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CefThread::PostTask(
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CefThread::UI, FROM_HERE,
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base::Bind(&WebDragSource::OnDragSourceMove, this));
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return;
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}
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if (!view_)
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return;
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gfx::Point client;
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gfx::Point screen;
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GetCursorPositions(source_wnd_, &client, &screen);
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view_->dragSourceMovedTo(client, screen, WebDragOperationNone);
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}
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