| // Copyright 2010-2014, Google Inc. |
| // All rights reserved. |
| // |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions are |
| // met: |
| // |
| // * Redistributions of source code must retain the above copyright |
| // notice, this list of conditions and the following disclaimer. |
| // * Redistributions in binary form must reproduce the above |
| // copyright notice, this list of conditions and the following disclaimer |
| // in the documentation and/or other materials provided with the |
| // distribution. |
| // * Neither the name of Google Inc. nor the names of its |
| // contributors may be used to endorse or promote products derived from |
| // this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| #include "win32/ime/ime_message_queue.h" |
| |
| #include "win32/ime/ime_scoped_context.h" |
| |
| namespace mozc { |
| namespace win32 { |
| namespace { |
| |
| static HIMCC InitializeHIMCC(HIMCC himcc, DWORD size) { |
| if (himcc == nullptr) { |
| return ::ImmCreateIMCC(size); |
| } else { |
| return ::ImmReSizeIMCC(himcc, size); |
| } |
| } |
| |
| } // namespace |
| |
| MessageQueue::MessageQueue(HIMC himc) |
| : himc_(himc), transmsg_(nullptr), transmsg_count_(0) { |
| } |
| |
| void MessageQueue::Attach(LPTRANSMSGLIST transmsg) { |
| Send(); |
| transmsg_ = transmsg; |
| } |
| |
| int MessageQueue::Detach() { |
| const LPTRANSMSGLIST transmsg = transmsg_; |
| transmsg_ = nullptr; |
| const int transmsg_count = transmsg_count_; |
| transmsg_count_ = 0; |
| |
| // If we are not using the extended message vector, means that the |
| // TRANSMSGLIST is big enough, simply return the count in TRANSMSGLIST. |
| if (messages_.size() == 0) { |
| return transmsg_count; |
| } |
| |
| // If |transmsg_| is not big enough to store all messages, those extra |
| // messages are stored temporarily in |messages_| vector. In this case, all |
| // the messages should be stored in the message buffer of the context. |
| // Generally, |transmsg_| can contains 256 messages, but this number is not |
| // documented, so there are chances that it may be full. |
| |
| ScopedHIMC<INPUTCONTEXT> context(himc_); |
| // If anything wrong, return the message count in TRANSMSGLIST, the extra |
| // messages will be saved in vector so they can be sent out later. |
| if (context.get() == nullptr) { |
| return transmsg_count; |
| } |
| |
| // In this case, use |message_buffer| to send messages. |
| const size_t total_num_messages = transmsg_count + messages_.size(); |
| const size_t total_bytes = total_num_messages * sizeof(TRANSMSG); |
| context->hMsgBuf = InitializeHIMCC(context->hMsgBuf, total_bytes); |
| ScopedHIMCC<TRANSMSG> message_buffer(context->hMsgBuf); |
| if (message_buffer.get() == nullptr) { |
| return transmsg_count; |
| } |
| |
| // At first, messages in |transmsg->TransMsg| must be copied into |
| // |message_buffer|. |
| for (size_t i = 0; i < transmsg_count; ++i) { |
| message_buffer.get()[i].message = transmsg->TransMsg[i].message; |
| message_buffer.get()[i].wParam = transmsg->TransMsg[i].wParam; |
| message_buffer.get()[i].lParam = transmsg->TransMsg[i].lParam; |
| } |
| // Next, copy the rest messages from |messages_| to |message_buffer|. |
| const size_t count_in_vector = messages_.size(); |
| for (size_t i = transmsg_count; i < total_num_messages; ++i) { |
| const size_t index_in_vector = i - transmsg_count; |
| message_buffer.get()[i].message = messages_[index_in_vector].message; |
| message_buffer.get()[i].wParam = messages_[index_in_vector].wParam; |
| message_buffer.get()[i].lParam = messages_[index_in_vector].lParam; |
| } |
| messages_.clear(); |
| |
| return total_num_messages; |
| } |
| |
| void MessageQueue::AddMessage(UINT message, WPARAM wparam, LPARAM lparam) { |
| // If transmsg_ is not big enough, we store extra messages in messages_ |
| // vector. |
| if ((transmsg_ != nullptr) && (transmsg_count_ < transmsg_->uMsgCount)) { |
| transmsg_->TransMsg[transmsg_count_].message = message; |
| transmsg_->TransMsg[transmsg_count_].wParam = wparam; |
| transmsg_->TransMsg[transmsg_count_].lParam = lparam; |
| transmsg_count_++; |
| return; |
| } |
| |
| const TRANSMSG transmsg = { message, wparam, lparam }; |
| messages_.push_back(transmsg); |
| } |
| |
| bool MessageQueue::Send() { |
| // Don't send if attached to a TRANSMSGLIST, these messages will be sent via |
| // the buffer provided by ImeToAsciiEx. |
| if (transmsg_ != nullptr) { |
| return false; |
| } |
| if (messages_.size() == 0) { |
| return false; |
| } |
| |
| ScopedHIMC<INPUTCONTEXT> context(himc_); |
| if (context.get() == nullptr) { |
| return false; |
| } |
| |
| const int size = static_cast<int>(messages_.size()) * sizeof(TRANSMSG); |
| context->hMsgBuf = InitializeHIMCC(context->hMsgBuf, size); |
| ScopedHIMCC<TRANSMSG> message_buffer(context->hMsgBuf); |
| if (message_buffer.get() == nullptr) { |
| return false; |
| } |
| |
| const size_t count_in_vector = messages_.size(); |
| for (size_t i = 0; i < count_in_vector; ++i) { |
| message_buffer.get()[i].message = messages_[i].message; |
| message_buffer.get()[i].wParam = messages_[i].wParam; |
| message_buffer.get()[i].lParam = messages_[i].lParam; |
| } |
| context->dwNumMsgBuf = count_in_vector; |
| messages_.clear(); |
| |
| if (!::ImmGenerateMessage(himc_)) { |
| return false; |
| } |
| |
| return true; |
| } |
| |
| const vector<TRANSMSG> &MessageQueue::messages() const { |
| return messages_; |
| } |
| |
| } // namespace win32 |
| } // namespace mozc |