1 /* 2 * Copyright (C) 2009 Google Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are 6 * met: 7 * 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above 11 * copyright notice, this list of conditions and the following disclaimer 12 * in the documentation and/or other materials provided with the 13 * distribution. 14 * * Neither the name of Google Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived from 16 * this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #include "config.h" 32 #include "web/DragClientImpl.h" 33 34 #include "core/clipboard/DataObject.h" 35 #include "core/clipboard/DataTransfer.h" 36 #include "core/frame/LocalFrame.h" 37 #include "platform/DragImage.h" 38 #include "platform/geometry/IntSize.h" 39 #include "platform/graphics/skia/NativeImageSkia.h" 40 #include "public/platform/WebCommon.h" 41 #include "public/platform/WebDragData.h" 42 #include "public/platform/WebImage.h" 43 #include "public/platform/WebPoint.h" 44 #include "public/web/WebDragOperation.h" 45 #include "public/web/WebViewClient.h" 46 #include "web/WebViewImpl.h" 47 #include "wtf/Assertions.h" 48 #include "wtf/RefPtr.h" 49 50 namespace blink { 51 52 DragDestinationAction DragClientImpl::actionMaskForDrag(DragData*) 53 { 54 if (m_webView->client() && m_webView->client()->acceptsLoadDrops()) 55 return DragDestinationActionAny; 56 57 return static_cast<DragDestinationAction>( 58 DragDestinationActionDHTML | DragDestinationActionEdit); 59 } 60 61 void DragClientImpl::startDrag(DragImage* dragImage, const IntPoint& dragImageOrigin, const IntPoint& eventPos, DataTransfer* dataTransfer, LocalFrame* frame, bool isLinkDrag) 62 { 63 // Add a ref to the frame just in case a load occurs mid-drag. 64 RefPtrWillBeRawPtr<LocalFrame> frameProtector(frame); 65 66 WebDragData dragData(dataTransfer->dataObject()); 67 WebDragOperationsMask dragOperationMask = static_cast<WebDragOperationsMask>(dataTransfer->sourceOperation()); 68 WebImage image; 69 IntSize offsetSize(eventPos - dragImageOrigin); 70 WebPoint offsetPoint(offsetSize.width(), offsetSize.height()); 71 72 if (dragImage) { 73 float resolutionScale = dragImage->resolutionScale(); 74 if (m_webView->deviceScaleFactor() != resolutionScale) { 75 ASSERT(resolutionScale > 0); 76 float scale = m_webView->deviceScaleFactor() / resolutionScale; 77 dragImage->scale(scale, scale); 78 } 79 image = dragImage->bitmap(); 80 } 81 82 m_webView->startDragging(frame, dragData, dragOperationMask, image, offsetPoint); 83 } 84 85 } // namespace blink 86
