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-rw-r--r--krfb/libvncserver/example.c279
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diff --git a/krfb/libvncserver/example.c b/krfb/libvncserver/example.c
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-/*
- *
- * This is an example of how to use libvncserver.
- *
- * libvncserver example
- * Copyright (C) 2001 Johannes E. Schindelin <[email protected]>
- *
- * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
- * 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 maxx=640, maxy=480, bpp=4;
-/* 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;
-}
-
-/* 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(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(cl->screen->frameBuffer);
- rfbMarkRectAsModified(cl->screen,0,0,maxx,maxy);
- } 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";
-
- initBuffer(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
- /* this is the blocking event loop, i.e. it never returns */
- /* 40000 are the microseconds, i.e. 0.04 seconds */
- rfbRunEventLoop(rfbScreen,40000,FALSE);
-#elif !defined(HAVE_PTHREADS)
-#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 */
- while(1) sleep(5); /* render(); */
-
- return(0);
-}
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