HRESULT DropTargetWin::DragEnter(IDataObject* data_object,
DWORD key_state,
POINTL cursor_position,
DWORD* effect) {
if (!callback_)
return E_UNEXPECTED;
HRESULT hr;
IDropTargetHelper* drop_helper = DropHelper();
if (drop_helper) {
hr = drop_helper->DragEnter(hWnd_, data_object,
reinterpret_cast<POINT*>(&cursor_position), *effect);
}
CefRefPtr<CefDragData> drag_data = current_drag_data_;
if (!drag_data) {
drag_data = DataObjectToDragData(data_object);
}
CefMouseEvent ev = ToMouseEvent(cursor_position, key_state, hWnd_);
CefBrowserHost::DragOperationsMask mask = DropEffectToDragOperation(*effect);
mask = callback_->OnDragEnter(drag_data, ev, mask);
*effect = DragOperationToDropEffect(mask);
return S_OK;
}
HRESULT DropTargetWin::DragOver(DWORD key_state,
POINTL cursor_position,
DWORD* effect) {
if (!callback_)
return E_UNEXPECTED;
CefMouseEvent ev = ToMouseEvent(cursor_position, key_state, hWnd_);
CefBrowserHost::DragOperationsMask mask = DropEffectToDragOperation(*effect);
mask = callback_->OnDragOver(ev, mask);
*effect = DragOperationToDropEffect(mask);
return S_OK;
}
HRESULT DropTargetWin::DragEnter(IDataObject* data_object,
DWORD key_state,
POINTL cursor_position,
DWORD* effect) {
if (!callback_)
return E_UNEXPECTED;
CefRefPtr<CefDragData> drag_data = current_drag_data_;
if (!drag_data) {
drag_data = DataObjectToDragData(data_object);
}
CefMouseEvent ev = ToMouseEvent(cursor_position, key_state, hWnd_);
CefBrowserHost::DragOperationsMask mask = DropEffectToDragOperation(*effect);
mask = callback_->OnDragEnter(drag_data, ev, mask);
*effect = DragOperationToDropEffect(mask);
return S_OK;
}
HRESULT DropTargetWin::DragOver(DWORD key_state,
POINTL cursor_position,
DWORD* effect) {
if (!callback_)
return E_UNEXPECTED;
// Tell the helper that we moved over it so it can update the drag image.
IDropTargetHelper* drop_helper = DropHelper();
if (drop_helper)
drop_helper->DragOver(reinterpret_cast<POINT*>(&cursor_position), *effect);
CefMouseEvent ev = ToMouseEvent(cursor_position, key_state, hWnd_);
CefBrowserHost::DragOperationsMask mask = DropEffectToDragOperation(*effect);
mask = callback_->OnDragOver(ev, mask);
*effect = DragOperationToDropEffect(mask);
return S_OK;
}
CefBrowserHost::DragOperationsMask DropTargetWin::StartDragging(
CefRefPtr<CefBrowser> browser,
CefRefPtr<CefDragData> drag_data,
CefRenderHandler::DragOperationsMask allowed_ops,
int x, int y) {
CComPtr<IDataObject> dataObject;
DWORD resEffect = DROPEFFECT_NONE;
if (DragDataToDataObject(drag_data, &dataObject)) {
CComPtr<IDropSource> dropSource = DropSourceWin::Create();
DWORD effect = DragOperationToDropEffect(allowed_ops);
current_drag_data_ = drag_data->Clone();
current_drag_data_->ResetFileContents();
HRESULT res = DoDragDrop(dataObject, dropSource, effect, &resEffect);
if (res != DRAGDROP_S_DROP)
resEffect = DROPEFFECT_NONE;
current_drag_data_ = NULL;
}
return DropEffectToDragOperation(resEffect);
}
CefBrowserHost::DragOperationsMask DropTargetWin::StartDragging(
CefRefPtr<CefBrowser> browser,
CefRefPtr<CefDragData> drag_data,
void* hbitmap,
int imgcx,
int imgcy,
int imgx,
int imgy,
CefRenderHandler::DragOperationsMask allowed_ops,
int x, int y) {
CComPtr<IDataObject> dataObject;
DWORD resEffect = DROPEFFECT_NONE;
if (DragDataToDataObject(drag_data, &dataObject)) {
IDragSourceHelper* sourceHelper = DragHelper();
HRESULT hr;
if (sourceHelper)
{
SHDRAGIMAGE sdi;
SIZE img_size{ imgcx, imgcy };
sdi.sizeDragImage = img_size;
sdi.crColorKey = 0xFFFFFFFF;
sdi.hbmpDragImage = (HBITMAP)hbitmap;
POINT img_pt{imgx, imgy};
sdi.ptOffset = img_pt;
hr = sourceHelper->InitializeFromBitmap(&sdi, dataObject);
}
CComPtr<IDropSource> dropSource = DropSourceWin::Create();
DWORD effect = DragOperationToDropEffect(allowed_ops);
current_drag_data_ = drag_data->Clone();
current_drag_data_->ResetFileContents();
HRESULT res = DoDragDrop(dataObject, dropSource, effect, &resEffect);
if (res != DRAGDROP_S_DROP)
resEffect = DROPEFFECT_NONE;
current_drag_data_ = NULL;
}
return DropEffectToDragOperation(resEffect);
}