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// Copyright (c) 2010 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "remoting/host/event_executor_win.h"
#include <windows.h>
#include "app/keyboard_codes.h"
#include "base/stl_util-inl.h"
#include "remoting/host/capturer.h"
// TODO(hclam): Should not include internal.pb.h here.
#include "remoting/proto/internal.pb.h"
namespace remoting {
EventExecutorWin::EventExecutorWin(Capturer* capturer)
: EventExecutor(capturer) {
}
EventExecutorWin::~EventExecutorWin() {
}
void EventExecutorWin::HandleInputEvent(ChromotingClientMessage* msg) {
if (msg->has_mouse_set_position_event()) {
HandleMouseSetPosition(msg);
} else if (msg->has_mouse_move_event()) {
HandleMouseMove(msg);
} else if (msg->has_mouse_wheel_event()) {
HandleMouseWheel(msg);
} else if (msg->has_mouse_down_event()) {
HandleMouseButtonDown(msg);
} else if (msg->has_mouse_up_event()) {
HandleMouseButtonUp(msg);
} else if (msg->has_key_event()) {
HandleKey(msg);
}
delete msg;
}
void EventExecutorWin::HandleMouseSetPosition(ChromotingClientMessage* msg) {
int x = msg->mouse_set_position_event().x();
int y = msg->mouse_set_position_event().y();
int width = msg->mouse_set_position_event().width();
int height = msg->mouse_set_position_event().height();
// Get width and height from the capturer if they are missing from the
// message.
if (width == 0 || height == 0) {
width = capturer_->width();
height = capturer_->height();
}
if (width == 0 || height == 0) {
return;
}
INPUT input;
input.type = INPUT_MOUSE;
input.mi.time = 0;
input.mi.dx = static_cast<int>((x * 65535) / width);
input.mi.dy = static_cast<int>((y * 65535) / height);
input.mi.dwFlags = MOUSEEVENTF_MOVE | MOUSEEVENTF_ABSOLUTE;
SendInput(1, &input, sizeof(INPUT));
}
void EventExecutorWin::HandleMouseMove(ChromotingClientMessage* msg) {
INPUT input;
input.type = INPUT_MOUSE;
input.mi.time = 0;
input.mi.dx = msg->mouse_move_event().offset_x();
input.mi.dy = msg->mouse_move_event().offset_y();
input.mi.dwFlags = MOUSEEVENTF_MOVE;
SendInput(1, &input, sizeof(INPUT));
}
void EventExecutorWin::HandleMouseWheel(ChromotingClientMessage* msg) {
INPUT input;
input.type = INPUT_MOUSE;
input.mi.time = 0;
int dx = msg->mouse_wheel_event().offset_x();
int dy = msg->mouse_wheel_event().offset_y();
if (dx != 0) {
input.mi.mouseData = dx;
input.mi.dwFlags = MOUSEEVENTF_HWHEEL;
SendInput(1, &input, sizeof(INPUT));
}
if (dy != 0) {
input.mi.mouseData = dy;
input.mi.dwFlags = MOUSEEVENTF_WHEEL;
SendInput(1, &input, sizeof(INPUT));
}
}
void EventExecutorWin::HandleMouseButtonDown(ChromotingClientMessage* msg) {
INPUT input;
input.type = INPUT_MOUSE;
input.mi.time = 0;
input.mi.dx = 0;
input.mi.dy = 0;
MouseButton button = msg->mouse_down_event().button();
if (button == MouseButtonLeft) {
input.mi.dwFlags = MOUSEEVENTF_LEFTDOWN;
} else if (button == MouseButtonMiddle) {
input.mi.dwFlags = MOUSEEVENTF_MIDDLEDOWN;
} else if (button == MouseButtonRight) {
input.mi.dwFlags = MOUSEEVENTF_RIGHTDOWN;
} else {
input.mi.dwFlags = MOUSEEVENTF_LEFTDOWN;
}
SendInput(1, &input, sizeof(INPUT));
}
void EventExecutorWin::HandleMouseButtonUp(ChromotingClientMessage* msg) {
INPUT input;
input.type = INPUT_MOUSE;
input.mi.time = 0;
input.mi.dx = 0;
input.mi.dy = 0;
MouseButton button = msg->mouse_down_event().button();
if (button == MouseButtonLeft) {
input.mi.dwFlags = MOUSEEVENTF_LEFTUP;
} else if (button == MouseButtonMiddle) {
input.mi.dwFlags = MOUSEEVENTF_MIDDLEUP;
} else if (button == MouseButtonRight) {
input.mi.dwFlags = MOUSEEVENTF_RIGHTUP;
} else {
input.mi.dwFlags = MOUSEEVENTF_LEFTUP;
}
SendInput(1, &input, sizeof(INPUT));
}
void EventExecutorWin::HandleKey(ChromotingClientMessage* msg) {
int key = msg->key_event().key();
bool down = msg->key_event().pressed();
// Calculate scan code from virtual key.
HKL hkl = GetKeyboardLayout(0);
int scan_code = MapVirtualKeyEx(key, MAPVK_VK_TO_VSC_EX, hkl);
INPUT input;
input.type = INPUT_KEYBOARD;
input.ki.time = 0;
input.ki.wVk = key;
input.ki.wScan = scan_code;
// Flag to mark extended 'e0' key scancodes. Without this, the left and
// right windows keys will not be handled properly (on US keyboard).
if ((scan_code & 0xFF00) == 0xE000) {
input.ki.dwFlags |= KEYEVENTF_EXTENDEDKEY;
}
// Flag to mark keyup events. Default is keydown.
if (!down) {
input.ki.dwFlags |= KEYEVENTF_KEYUP;
}
SendInput(1, &input, sizeof(INPUT));
}
} // namespace remoting
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