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barrier/lib/arch/CArchConsoleWindows.cpp

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/*
* synergy -- mouse and keyboard sharing utility
* Copyright (C) 2002 Chris Schoeneman
*
* This package is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* found in the file COPYING that should have accompanied this file.
*
* This package is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include "CArchConsoleWindows.h"
#include "IArchMultithread.h"
#include "CArch.h"
#include "CArchMiscWindows.h"
#include <richedit.h>
#define SYNERGY_MSG_CONSOLE_OPEN WM_APP + 0x0021
#define SYNERGY_MSG_CONSOLE_CLOSE WM_APP + 0x0022
#define SYNERGY_MSG_CONSOLE_SHOW WM_APP + 0x0023
#define SYNERGY_MSG_CONSOLE_WRITE WM_APP + 0x0024
#define SYNERGY_MSG_CONSOLE_CLEAR WM_APP + 0x0025
#define TWIPS_PER_POINT 20
//
// CArchConsoleWindows
//
CArchConsoleWindows* CArchConsoleWindows::s_instance = NULL;
HINSTANCE CArchConsoleWindows::s_appInstance = NULL;
CArchConsoleWindows::CArchConsoleWindows(void* appInstance) :
m_show(false),
m_maxLines(1000),
m_numCharacters(0),
m_maxCharacters(65536)
{
// save the singleton instance
s_instance = this;
// save app instance
s_appInstance = reinterpret_cast<HINSTANCE>(appInstance);
// we need a mutex
m_mutex = ARCH->newMutex();
// and a condition variable which uses the above mutex
m_ready = false;
m_condVar = ARCH->newCondVar();
// we're going to want to get a result from the thread we're
// about to create to know if it initialized successfully.
// so we lock the condition variable.
ARCH->lockMutex(m_mutex);
// open a window and run an event loop in a separate thread.
// this has to happen in a separate thread because if we
// create a window on the current desktop with the current
// thread then the current thread won't be able to switch
// desktops if it needs to.
m_thread = ARCH->newThread(&CArchConsoleWindows::threadEntry, this);
// wait for child thread
while (!m_ready) {
ARCH->waitCondVar(m_condVar, m_mutex, -1.0);
}
// ready
ARCH->unlockMutex(m_mutex);
}
CArchConsoleWindows::~CArchConsoleWindows()
{
if (m_thread != NULL) {
PostMessage(m_hwnd, WM_QUIT, 0, 0);
ARCH->wait(m_thread, -1.0);
ARCH->closeThread(m_thread);
}
ARCH->closeCondVar(m_condVar);
ARCH->closeMutex(m_mutex);
s_instance = NULL;
}
void
CArchConsoleWindows::openConsole(const char* title)
{
SetWindowText(m_frame, title);
SendMessage(m_frame, SYNERGY_MSG_CONSOLE_OPEN, 0, 0);
}
void
CArchConsoleWindows::closeConsole()
{
SendMessage(m_frame, SYNERGY_MSG_CONSOLE_CLOSE, 0, 0);
SendMessage(m_frame, SYNERGY_MSG_CONSOLE_CLEAR, 0, 0);
}
void
CArchConsoleWindows::showConsole(bool showIfEmpty)
{
SendMessage(m_frame, SYNERGY_MSG_CONSOLE_SHOW, showIfEmpty ? 1 : 0, 0);
}
void
CArchConsoleWindows::writeConsole(const char* str)
{
SendMessage(m_frame, SYNERGY_MSG_CONSOLE_WRITE,
reinterpret_cast<WPARAM>(str), 0);
}
const char*
CArchConsoleWindows::getNewlineForConsole()
{
return "\r\n";
}
void
CArchConsoleWindows::clearBuffer()
{
m_buffer.clear();
m_numCharacters = 0;
SetWindowText(m_hwnd, "");
}
void
CArchConsoleWindows::appendBuffer(const char* msg)
{
bool wasEmpty = m_buffer.empty();
// get current selection
CHARRANGE selection;
SendMessage(m_hwnd, EM_EXGETSEL, 0, reinterpret_cast<LPARAM>(&selection));
// remove tail of buffer
size_t removedCharacters = 0;
while (m_buffer.size() >= m_maxLines) {
removedCharacters += m_buffer.front().size();
m_buffer.pop_front();
}
// remove lines from top of control
if (removedCharacters > 0) {
CHARRANGE range;
range.cpMin = 0;
range.cpMax = static_cast<LONG>(removedCharacters);
SendMessage(m_hwnd, EM_EXSETSEL, 0, reinterpret_cast<LPARAM>(&range));
SendMessage(m_hwnd, EM_REPLACESEL, FALSE, reinterpret_cast<LPARAM>(""));
// adjust selection
if (selection.cpMin < static_cast<LONG>(removedCharacters) ||
selection.cpMax < static_cast<LONG>(removedCharacters)) {
selection.cpMin = 0;
selection.cpMax = 0;
}
else {
selection.cpMin -= static_cast<LONG>(removedCharacters);
selection.cpMax -= static_cast<LONG>(removedCharacters);
}
m_numCharacters -= removedCharacters;
}
// append message
m_buffer.push_back(msg);
size_t newNumCharacters = m_numCharacters + m_buffer.back().size();
// add line to bottom of control
if (newNumCharacters > m_maxCharacters) {
m_maxCharacters = newNumCharacters;
SendMessage(m_hwnd, EM_EXLIMITTEXT, 0, m_maxCharacters);
}
CHARRANGE range;
range.cpMin = m_numCharacters;
range.cpMax = m_numCharacters;
SendMessage(m_hwnd, EM_EXSETSEL, 0, reinterpret_cast<LPARAM>(&range));
SendMessage(m_hwnd, EM_REPLACESEL, FALSE,
reinterpret_cast<LPARAM>(m_buffer.back().c_str()));
// adjust selection
bool atEnd = false;
if (selection.cpMax == static_cast<LONG>(m_numCharacters)) {
selection.cpMin = static_cast<LONG>(newNumCharacters);
selection.cpMax = static_cast<LONG>(newNumCharacters);
atEnd = true;
}
// restore the selection
SendMessage(m_hwnd, EM_EXSETSEL, 0, reinterpret_cast<LPARAM>(&selection));
if (atEnd) {
SendMessage(m_hwnd, EM_SCROLLCARET, 0, 0);
}
if (wasEmpty && m_show) {
ShowWindow(m_frame, TRUE);
}
m_numCharacters = newNumCharacters;
}
void
CArchConsoleWindows::setSize(int width, int height)
{
DWORD style = GetWindowLong(m_frame, GWL_STYLE);
DWORD exStyle = GetWindowLong(m_frame, GWL_EXSTYLE);
RECT rect;
rect.left = 100;
rect.top = 100;
rect.right = rect.left + width * m_wChar;
rect.bottom = rect.top + height * m_hChar;
AdjustWindowRectEx(&rect, style, FALSE, exStyle);
SetWindowPos(m_frame, NULL, 0, 0, rect.right - rect.left,
rect.bottom - rect.top,
SWP_NOACTIVATE | SWP_NOMOVE | SWP_NOZORDER);
}
LRESULT
CArchConsoleWindows::wndProc(HWND hwnd,
UINT msg, WPARAM wParam, LPARAM lParam)
{
switch (msg) {
case WM_CLOSE:
ShowWindow(m_frame, FALSE);
m_show = false;
return 0;
case SYNERGY_MSG_CONSOLE_OPEN:
return 0;
case SYNERGY_MSG_CONSOLE_CLOSE:
SendMessage(m_frame, WM_CLOSE, 0, 0);
m_show = false;
return 0;
case SYNERGY_MSG_CONSOLE_SHOW:
m_show = true;
if (wParam != 0 || !m_buffer.empty()) {
ShowWindow(m_frame, TRUE);
}
return 0;
case SYNERGY_MSG_CONSOLE_WRITE:
appendBuffer(reinterpret_cast<const char*>(wParam));
return 0;
case SYNERGY_MSG_CONSOLE_CLEAR:
clearBuffer();
return 0;
case WM_SIZE:
if (hwnd == m_frame) {
MoveWindow(m_hwnd, 0, 0, LOWORD(lParam), HIWORD(lParam), TRUE);
}
break;
case WM_SIZING:
if (hwnd == m_frame) {
// get window vs client area info
int wBase = 40 * m_wChar;
int hBase = 40 * m_hChar;
DWORD style = GetWindowLong(m_frame, GWL_STYLE);
DWORD exStyle = GetWindowLong(m_frame, GWL_EXSTYLE);
RECT rect;
rect.left = 100;
rect.top = 100;
rect.right = rect.left + wBase;
rect.bottom = rect.top + hBase;
AdjustWindowRectEx(&rect, style, FALSE, exStyle);
wBase = rect.right - rect.left - wBase;
hBase = rect.bottom - rect.top - hBase;
// get closest size that's a multiple of the character size
RECT* newRect = (RECT*)lParam;
int width = (newRect->right - newRect->left - wBase) / m_wChar;
int height = (newRect->bottom - newRect->top - hBase) / m_hChar;
width = width * m_wChar + wBase;
height = height * m_hChar + hBase;
// adjust sizing rect
switch (wParam) {
case WMSZ_LEFT:
case WMSZ_TOPLEFT:
case WMSZ_BOTTOMLEFT:
newRect->left = newRect->right - width;
break;
case WMSZ_RIGHT:
case WMSZ_TOPRIGHT:
case WMSZ_BOTTOMRIGHT:
newRect->right = newRect->left + width;
break;
}
switch (wParam) {
case WMSZ_TOP:
case WMSZ_TOPLEFT:
case WMSZ_TOPRIGHT:
newRect->top = newRect->bottom - height;
break;
case WMSZ_BOTTOM:
case WMSZ_BOTTOMLEFT:
case WMSZ_BOTTOMRIGHT:
newRect->bottom = newRect->top + height;
break;
}
return TRUE;
}
break;
default:
break;
}
return DefWindowProc(hwnd, msg, wParam, lParam);
}
LRESULT CALLBACK
CArchConsoleWindows::staticWndProc(HWND hwnd, UINT msg,
WPARAM wParam, LPARAM lParam)
{
// forward the message
if (s_instance != NULL) {
return s_instance->wndProc(hwnd, msg, wParam, lParam);
}
else {
return DefWindowProc(hwnd, msg, wParam, lParam);
}
}
void
CArchConsoleWindows::threadMainLoop()
{
LoadLibrary("RICHED32.DLL");
// get the app icons
HICON largeIcon, smallIcon;
CArchMiscWindows::getIcons(largeIcon, smallIcon);
// register a window class
WNDCLASSEX classInfo;
classInfo.cbSize = sizeof(classInfo);
classInfo.style = 0;
classInfo.lpfnWndProc = &CArchConsoleWindows::staticWndProc;
classInfo.cbClsExtra = 0;
classInfo.cbWndExtra = sizeof(CArchConsoleWindows*);
classInfo.hInstance = s_appInstance;
classInfo.hIcon = largeIcon;
classInfo.hCursor = NULL;
classInfo.hbrBackground = NULL;
classInfo.lpszMenuName = NULL;
classInfo.lpszClassName = TEXT("SynergyConsole");
classInfo.hIconSm = smallIcon;
ATOM windowClass = RegisterClassEx(&classInfo);
// create frame window
m_frame = CreateWindowEx(0,
reinterpret_cast<LPCTSTR>(windowClass),
TEXT("Synergy Log"),
WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT, CW_USEDEFAULT, 100, 100,
NULL,
NULL,
s_appInstance,
NULL);
// create log window
m_hwnd = CreateWindowEx(0,
"RichEdit",
TEXT(""),
WS_CHILD | WS_VISIBLE | WS_VSCROLL |
ES_MULTILINE | ES_READONLY,
0, 0, 1, 1,
m_frame,
(HMENU)1,
s_appInstance,
NULL);
// select font and get info
HDC hdc = GetDC(m_hwnd);
HGDIOBJ oldFont = SelectObject(hdc, GetStockObject(ANSI_FIXED_FONT));
TEXTMETRIC metrics;
GetTextMetrics(hdc, &metrics);
CHARFORMAT format;
format.cbSize = sizeof(format);
format.dwMask = CFM_CHARSET | CFM_COLOR | CFM_FACE |
CFM_OFFSET | CFM_SIZE | CFM_PROTECTED |
CFM_BOLD | CFM_ITALIC |
CFM_STRIKEOUT | CFM_UNDERLINE;
format.dwEffects = 0;
format.yHeight = metrics.tmHeight * TWIPS_PER_POINT; // this is in 1/1440 in (twips)
format.yOffset = 0;
format.crTextColor = RGB(0, 0, 0);
format.bCharSet = DEFAULT_CHARSET;
format.bPitchAndFamily = FIXED_PITCH | FF_MODERN;
GetTextFace(hdc, sizeof(format.szFaceName), format.szFaceName);
SelectObject(hdc, oldFont);
ReleaseDC(m_hwnd, hdc);
// prep window
SendMessage(m_hwnd, EM_EXLIMITTEXT, 0, m_maxCharacters);
SendMessage(m_hwnd, EM_SETCHARFORMAT, 0, reinterpret_cast<LPARAM>(&format));
SendMessage(m_hwnd, EM_SETBKGNDCOLOR, 0, RGB(255, 255, 255));
m_wChar = metrics.tmAveCharWidth;
m_hChar = metrics.tmHeight + metrics.tmExternalLeading;
setSize(80, 25);
// signal ready
ARCH->lockMutex(m_mutex);
m_ready = true;
ARCH->broadcastCondVar(m_condVar);
ARCH->unlockMutex(m_mutex);
// handle failure
if (m_hwnd == NULL) {
UnregisterClass(reinterpret_cast<LPCTSTR>(windowClass), s_appInstance);
return;
}
// main loop
MSG msg;
while (GetMessage(&msg, NULL, 0, 0)) {
TranslateMessage(&msg);
DispatchMessage(&msg);
}
// clean up
DestroyWindow(m_hwnd);
UnregisterClass(reinterpret_cast<LPCTSTR>(windowClass), s_appInstance);
}
void*
CArchConsoleWindows::threadEntry(void* self)
{
reinterpret_cast<CArchConsoleWindows*>(self)->threadMainLoop();
return NULL;
}
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