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// SPDX-FileCopyrightText: 2022 UnionTech Software Technology Co., Ltd.
//
// SPDX-License-Identifier: GPL-3.0-or-later
package x
import (
"bufio"
"errors"
"fmt"
"log"
"net"
"os"
"sync"
"sync/atomic"
)
var Logger *log.Logger
var debugEnabled bool
func init() {
if os.Getenv("DEBUG_X11_CLIENT") == "1" {
debugEnabled = true
Logger = log.New(os.Stderr, "[x] ", log.Lshortfile)
}
}
func logPrintln(v ...interface{}) {
if debugEnabled {
_ = Logger.Output(2, fmt.Sprintln(v...))
}
}
func logPrintf(format string, v ...interface{}) {
if debugEnabled {
_ = Logger.Output(2, fmt.Sprintf(format, v...))
}
}
type Conn struct {
conn net.Conn
closed int32
bufReader *bufio.Reader
host string
display string
DisplayNumber int
ScreenNumber int
setup *Setup
ioMu sync.Mutex
in in
out out
ext ext
ridAllocator resourceIdAllocator
atomCache *AtomCache
atomCacheMu sync.Mutex
errorCb func(err *Error)
}
func (c *Conn) GetSetup() *Setup {
return c.setup
}
func (c *Conn) GetDefaultScreen() *Screen {
return &c.setup.Roots[c.ScreenNumber]
}
func (c *Conn) isClosed() bool {
return 1 == atomic.LoadInt32(&c.closed)
}
func (c *Conn) markClosed() {
atomic.StoreInt32(&c.closed, 1)
}
func (c *Conn) Close() {
if c.isClosed() {
return
}
c.markClosed()
c.conn.Close()
c.in.eventsCond.Signal()
go func() {
c.ioMu.Lock()
c.in.wakeUpAllReaders()
c.ioMu.Unlock()
}()
}
var errConnClosed = errors.New("conn closed")
func (c *Conn) AddEventChan(eventChan chan<- GenericEvent) {
if c.isClosed() || eventChan == nil {
return
}
c.in.addEventChan(eventChan)
}
func (c *Conn) RemoveEventChan(eventChan chan<- GenericEvent) {
if eventChan == nil {
return
}
c.in.removeEventChan(eventChan)
}
func (c *Conn) SetErrorCallback(fn func(err *Error)) {
c.errorCb = fn
}
func (c *Conn) MakeAndAddEventChan(bufSize int) chan GenericEvent {
ch := make(chan GenericEvent, bufSize)
c.AddEventChan(ch)
return ch
}
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