You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
331 lines
9.0 KiB
331 lines
9.0 KiB
/*
|
|
*
|
|
* This is an example of how to use libvncserver.
|
|
*
|
|
* libvncserver example
|
|
* Copyright (C) 2001 Johannes E. Schindelin <Johannes.Schindelin@gmx.de>
|
|
*
|
|
* This is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This software 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.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this software; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
|
|
* USA.
|
|
*/
|
|
|
|
#ifdef WIN32
|
|
#define sleep Sleep
|
|
#else
|
|
#include <unistd.h>
|
|
#endif
|
|
|
|
#ifdef __IRIX__
|
|
#include <netdb.h>
|
|
#endif
|
|
|
|
#include "rfb.h"
|
|
#include "keysym.h"
|
|
|
|
const int bpp=4;
|
|
int maxx=800, maxy=600;
|
|
/* TODO: odd maxx doesn't work (vncviewer bug) */
|
|
|
|
/* This initializes a nice (?) background */
|
|
|
|
void initBuffer(unsigned char* buffer)
|
|
{
|
|
int i,j;
|
|
for(j=0;j<maxy;++j) {
|
|
for(i=0;i<maxx;++i) {
|
|
buffer[(j*maxx+i)*bpp+0]=(i+j)*128/(maxx+maxy); /* red */
|
|
buffer[(j*maxx+i)*bpp+1]=i*128/maxx; /* green */
|
|
buffer[(j*maxx+i)*bpp+2]=j*256/maxy; /* blue */
|
|
}
|
|
buffer[j*maxx*bpp+0]=0xff;
|
|
buffer[j*maxx*bpp+1]=0xff;
|
|
buffer[j*maxx*bpp+2]=0xff;
|
|
buffer[j*maxx*bpp+3]=0xff;
|
|
}
|
|
}
|
|
|
|
/* Here we create a structure so that every client has it's own pointer */
|
|
|
|
typedef struct ClientData {
|
|
Bool oldButton;
|
|
int oldx,oldy;
|
|
} ClientData;
|
|
|
|
void clientgone(rfbClientPtr cl)
|
|
{
|
|
free(cl->clientData);
|
|
}
|
|
|
|
enum rfbNewClientAction newclient(rfbClientPtr cl)
|
|
{
|
|
cl->clientData = (void*)calloc(sizeof(ClientData),1);
|
|
cl->clientGoneHook = clientgone;
|
|
return RFB_CLIENT_ACCEPT;
|
|
}
|
|
|
|
/* switch to new framebuffer contents */
|
|
|
|
void newframebuffer(rfbScreenInfoPtr screen, int width, int height)
|
|
{
|
|
unsigned char *oldfb, *newfb;
|
|
|
|
maxx = width;
|
|
maxy = height;
|
|
oldfb = (unsigned char*)screen->frameBuffer;
|
|
newfb = (unsigned char*)malloc(maxx * maxy * bpp);
|
|
initBuffer(newfb);
|
|
rfbNewFramebuffer(screen, (char*)newfb, maxx, maxy, 8, 3, bpp);
|
|
free(oldfb);
|
|
|
|
/*** FIXME: Re-install cursor. ***/
|
|
}
|
|
|
|
/* aux function to draw a line */
|
|
|
|
void drawline(unsigned char* buffer,int rowstride,int bpp,int x1,int y1,int x2,int y2)
|
|
{
|
|
int i,j;
|
|
i=x1-x2; j=y1-y2;
|
|
if(i==0 && j==0) {
|
|
for(i=0;i<bpp;i++)
|
|
buffer[y1*rowstride+x1*bpp+i]=0xff;
|
|
return;
|
|
}
|
|
if(i<0) i=-i;
|
|
if(j<0) j=-j;
|
|
if(i<j) {
|
|
if(y1>y2) { i=y2; y2=y1; y1=i; i=x2; x2=x1; x1=i; }
|
|
if(y2==y1) { if(y2>0) y1--; else y2++; }
|
|
for(j=y1;j<=y2;j++)
|
|
for(i=0;i<bpp;i++)
|
|
buffer[j*rowstride+(x1+(j-y1)*(x2-x1)/(y2-y1))*bpp+i]=0xff;
|
|
} else {
|
|
if(x1>x2) { i=y2; y2=y1; y1=i; i=x2; x2=x1; x1=i; }
|
|
for(i=x1;i<=x2;i++)
|
|
for(j=0;j<bpp;j++)
|
|
buffer[(y1+(i-x1)*(y2-y1)/(x2-x1))*rowstride+i*bpp+j]=0xff;
|
|
}
|
|
}
|
|
|
|
/* Here the pointer events are handled */
|
|
|
|
void doptr(int buttonMask,int x,int y,rfbClientPtr cl)
|
|
{
|
|
ClientData* cd=cl->clientData;
|
|
|
|
if(cl->screen->cursorIsDrawn)
|
|
rfbUndrawCursor(cl->screen);
|
|
|
|
if(x>=0 && y>=0 && x<maxx && y<maxy) {
|
|
if(buttonMask) {
|
|
int i,j,x1,x2,y1,y2;
|
|
|
|
if(cd->oldButton==buttonMask) { /* draw a line */
|
|
drawline((unsigned char*)cl->screen->frameBuffer,cl->screen->paddedWidthInBytes,bpp,
|
|
x,y,cd->oldx,cd->oldy);
|
|
rfbMarkRectAsModified(cl->screen,x,y,cd->oldx,cd->oldy);
|
|
} else { /* draw a point (diameter depends on button) */
|
|
int w=cl->screen->paddedWidthInBytes;
|
|
x1=x-buttonMask; if(x1<0) x1=0;
|
|
x2=x+buttonMask; if(x2>maxx) x2=maxx;
|
|
y1=y-buttonMask; if(y1<0) y1=0;
|
|
y2=y+buttonMask; if(y2>maxy) y2=maxy;
|
|
|
|
for(i=x1*bpp;i<x2*bpp;i++)
|
|
for(j=y1;j<y2;j++)
|
|
cl->screen->frameBuffer[j*w+i]=(char)0xff;
|
|
rfbMarkRectAsModified(cl->screen,x1,y1,x2-1,y2-1);
|
|
}
|
|
|
|
/* we could get a selection like that:
|
|
rfbGotXCutText(cl->screen,"Hallo",5);
|
|
*/
|
|
} else
|
|
cd->oldButton=0;
|
|
|
|
cd->oldx=x; cd->oldy=y; cd->oldButton=buttonMask;
|
|
}
|
|
defaultPtrAddEvent(buttonMask,x,y,cl);
|
|
}
|
|
|
|
/* aux function to draw a character to x, y */
|
|
|
|
#include "radon.h"
|
|
|
|
/* Here the key events are handled */
|
|
|
|
void dokey(Bool down,KeySym key,rfbClientPtr cl)
|
|
{
|
|
if(down) {
|
|
if(key==XK_Escape)
|
|
rfbCloseClient(cl);
|
|
else if(key==XK_Page_Up) {
|
|
if(cl->screen->cursorIsDrawn)
|
|
rfbUndrawCursor(cl->screen);
|
|
initBuffer((unsigned char*)cl->screen->frameBuffer);
|
|
rfbMarkRectAsModified(cl->screen,0,0,maxx,maxy);
|
|
} else if (key == XK_Up) {
|
|
if (maxx < 1024) {
|
|
if (maxx < 800) {
|
|
newframebuffer(cl->screen, 800, 600);
|
|
} else {
|
|
newframebuffer(cl->screen, 1024, 768);
|
|
}
|
|
}
|
|
} else if(key==XK_Down) {
|
|
if (maxx > 640) {
|
|
if (maxx > 800) {
|
|
newframebuffer(cl->screen, 800, 600);
|
|
} else {
|
|
newframebuffer(cl->screen, 640, 480);
|
|
}
|
|
}
|
|
} else if(key>=' ' && key<0x100) {
|
|
ClientData* cd=cl->clientData;
|
|
int x1=cd->oldx,y1=cd->oldy,x2,y2;
|
|
if(cl->screen->cursorIsDrawn)
|
|
rfbUndrawCursor(cl->screen);
|
|
cd->oldx+=rfbDrawChar(cl->screen,&radonFont,cd->oldx,cd->oldy,(char)key,0x00ffffff);
|
|
rfbFontBBox(&radonFont,(char)key,&x1,&y1,&x2,&y2);
|
|
rfbMarkRectAsModified(cl->screen,x1,y1,x2-1,y2-1);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Example for an XCursor (foreground/background only) */
|
|
|
|
int exampleXCursorWidth=9,exampleXCursorHeight=7;
|
|
char exampleXCursor[]=
|
|
" "
|
|
" xx xx "
|
|
" xx xx "
|
|
" xxx "
|
|
" xx xx "
|
|
" xx xx "
|
|
" ";
|
|
|
|
/* Example for a rich cursor (full-colour) */
|
|
|
|
void MakeRichCursor(rfbScreenInfoPtr rfbScreen)
|
|
{
|
|
int i,j,w=32,h=32;
|
|
rfbCursorPtr c = rfbScreen->cursor;
|
|
char bitmap[]=
|
|
" "
|
|
" xxxxxx "
|
|
" xxxxxxxxxxxxxxxxx "
|
|
" xxxxxxxxxxxxxxxxxxxxxx "
|
|
" xxxxx xxxxxxxx xxxxxxxx "
|
|
" xxxxxxxxxxxxxxxxxxxxxxxxxxx "
|
|
" xxxxxxxxxxxxxxxxxxxxxxxxxxxxx "
|
|
" xxxxx xxxxxxxxxxx xxxxxxx "
|
|
" xxxx xxxxxxxxx xxxxxx "
|
|
" xxxxx xxxxxxxxxxx xxxxxxx "
|
|
" xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx "
|
|
" xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx "
|
|
" xxxxxxxxxxxx xxxxxxxxxxxxxxx "
|
|
" xxxxxxxxxxxxxxxxxxxxxxxxxxxx "
|
|
" xxxxxxxxxxxxxxxxxxxxxxxxxxxx "
|
|
" xxxxxxxxxxx xxxxxxxxxxxxxx "
|
|
" xxxxxxxxxx xxxxxxxxxxxx "
|
|
" xxxxxxxxx xxxxxxxxx "
|
|
" xxxxxxxxxx xxxxxxxxx "
|
|
" xxxxxxxxxxxxxxxxxxx "
|
|
" xxxxxxxxxxxxxxxxxxx "
|
|
" xxxxxxxxxxxxxxxxxxx "
|
|
" xxxxxxxxxxxxxxxxx "
|
|
" xxxxxxxxxxxxxxx "
|
|
" xxxx xxxxxxxxxxxxx "
|
|
" xx x xxxxxxxxxxx "
|
|
" xxx xxxxxxxxxxx "
|
|
" xxxx xxxxxxxxxxx "
|
|
" xxxxxx xxxxxxxxxxxx "
|
|
" xxxxxxxxxxxxxxxxxxxxxx "
|
|
" xxxxxxxxxxxxxxxx "
|
|
" ";
|
|
c=rfbScreen->cursor = rfbMakeXCursor(w,h,bitmap,bitmap);
|
|
c->xhot = 16; c->yhot = 24;
|
|
|
|
c->richSource = malloc(w*h*bpp);
|
|
for(j=0;j<h;j++) {
|
|
for(i=0;i<w;i++) {
|
|
c->richSource[j*w*bpp+i*bpp+0]=i*0xff/w;
|
|
c->richSource[j*w*bpp+i*bpp+1]=(i+j)*0xff/(w+h);
|
|
c->richSource[j*w*bpp+i*bpp+2]=j*0xff/h;
|
|
c->richSource[j*w*bpp+i*bpp+3]=0;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Initialization */
|
|
|
|
int main(int argc,char** argv)
|
|
{
|
|
rfbScreenInfoPtr rfbScreen =
|
|
rfbGetScreen(&argc,argv,maxx,maxy,8,3,bpp);
|
|
rfbScreen->desktopName = "LibVNCServer Example";
|
|
rfbScreen->frameBuffer = (char*)malloc(maxx*maxy*bpp);
|
|
rfbScreen->rfbAlwaysShared = TRUE;
|
|
rfbScreen->ptrAddEvent = doptr;
|
|
rfbScreen->kbdAddEvent = dokey;
|
|
rfbScreen->newClientHook = newclient;
|
|
rfbScreen->httpDir = "./classes";
|
|
rfbScreen->httpEnableProxyConnect = TRUE;
|
|
|
|
initBuffer((unsigned char*)rfbScreen->frameBuffer);
|
|
rfbDrawString(rfbScreen,&radonFont,20,100,"Hello, World!",0xffffff);
|
|
|
|
/* This call creates a mask and then a cursor: */
|
|
/* rfbScreen->defaultCursor =
|
|
rfbMakeXCursor(exampleCursorWidth,exampleCursorHeight,exampleCursor,0);
|
|
*/
|
|
|
|
MakeRichCursor(rfbScreen);
|
|
|
|
/* initialize the server */
|
|
rfbInitServer(rfbScreen);
|
|
|
|
#ifndef BACKGROUND_LOOP_TEST
|
|
#ifdef USE_OWN_LOOP
|
|
{
|
|
int i;
|
|
for(i=0;;i++) {
|
|
fprintf(stderr,"%d\r",i);
|
|
rfbProcessEvents(rfbScreen,100000);
|
|
}
|
|
}
|
|
#else
|
|
/* this is the blocking event loop, i.e. it never returns */
|
|
/* 40000 are the microseconds to wait on select(), i.e. 0.04 seconds */
|
|
rfbRunEventLoop(rfbScreen,40000,FALSE);
|
|
#endif /* OWN LOOP */
|
|
#else
|
|
#if !defined(HAVE_LIBPTHREAD)
|
|
#error "I need pthreads for that."
|
|
#endif
|
|
|
|
/* this is the non-blocking event loop; a background thread is started */
|
|
rfbRunEventLoop(rfbScreen,-1,TRUE);
|
|
/* now we could do some cool things like rendering in idle time */
|
|
while(1) sleep(5); /* render(); */
|
|
#endif /* BACKGROUND_LOOP */
|
|
|
|
rfbFreeCursor(rfbScreen->cursor);
|
|
free(rfbScreen->frameBuffer);
|
|
rfbScreenCleanup(rfbScreen);
|
|
|
|
return(0);
|
|
}
|