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354 lines
8.1 KiB
354 lines
8.1 KiB
/*
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*
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* This is an example of how to use libvncserver.
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*
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* libvncserver example
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* Copyright (C) 2005 Johannes E. Schindelin <Johannes.Schindelin@gmx.de>,
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* Karl Runge <runge@karlrunge.com>
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*
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* This is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This software is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this software; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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* USA.
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*/
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#include <rfb/rfb.h>
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static const int bpp=4;
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static int maxx=800, maxy=600;
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/* This initializes a nice (?) background */
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static void initBuffer(unsigned char* buffer)
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{
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int i,j;
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for(j=0;j<maxy;++j) {
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for(i=0;i<maxx;++i) {
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buffer[(j*maxx+i)*bpp+0]=(i+j)*128/(maxx+maxy); /* red */
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buffer[(j*maxx+i)*bpp+1]=i*128/maxx; /* green */
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buffer[(j*maxx+i)*bpp+2]=j*256/maxy; /* blue */
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}
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}
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}
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/* Example for an XCursor (foreground/background only) */
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static void SetXCursor(rfbScreenInfoPtr rfbScreen)
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{
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int width=13,height=11;
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char cursor[]=
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" "
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" xx xx "
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" xx xx "
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" xx xx "
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" xx xx "
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" xxx "
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" xx xx "
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" xx xx "
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" xx xx "
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" xx xx "
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" ",
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mask[]=
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"xxxx xxxx"
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"xxxx xxxx"
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" xxxx xxxx "
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" xxxx xxxx "
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" xxxxxxx "
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" xxxxx "
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" xxxxxxx "
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" xxxx xxxx "
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" xxxx xxxx "
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"xxxx xxxx"
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"xxxx xxxx";
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rfbCursorPtr c;
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c=rfbMakeXCursor(width,height,cursor,mask);
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c->xhot=width/2;c->yhot=height/2;
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rfbSetCursor(rfbScreen, c);
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}
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static void SetXCursor2(rfbScreenInfoPtr rfbScreen)
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{
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int width=13,height=22;
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char cursor[]=
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" xx "
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" x x "
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" x x "
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" x x "
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" x x "
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" x x "
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" x x "
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" x x "
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" x xx x "
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" x x x xxx "
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" x xx x x "
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" xx x x "
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" xx x x "
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" x x x "
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" x x x "
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" x x "
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" x x "
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" x x "
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" xx "
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" "
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" ",
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mask[]=
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"xxx "
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"xxxx "
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"xxxxx "
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"xxxxxx "
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"xxxxxxx "
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"xxxxxxxx "
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"xxxxxxxxx "
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"xxxxxxxxxx "
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"xxxxxxxxxxx "
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"xxxxxxxxxxxx "
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"xxxxxxxxxxxxx"
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"xxxxxxxxxxxxx"
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"xxxxxxxxxx x"
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"xxxxxxxxxx "
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"xxx xxxxxx "
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"xxx xxxxxx "
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"xx xxxxxx "
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" xxxxx "
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" xxxxxx"
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" xxxxx"
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" xxx "
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" ";
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rfbCursorPtr c;
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c=rfbMakeXCursor(width,height,cursor,mask);
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c->xhot=0;c->yhot=0;
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rfbSetCursor(rfbScreen, c);
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}
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/* Example for a rich cursor (full-colour) */
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static void SetRichCursor(rfbScreenInfoPtr rfbScreen)
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{
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int i,j,w=32,h=32;
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/* runge */
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/* rfbCursorPtr c = rfbScreen->cursor; */
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rfbCursorPtr c;
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char bitmap[]=
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" "
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" xxxxxx "
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" xxxxxxxxxxxxxxxxx "
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" xxxxxxxxxxxxxxxxxxxxxx "
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" xxxxx xxxxxxxx xxxxxxxx "
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" xxxxxxxxxxxxxxxxxxxxxxxxxxx "
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" xxxxxxxxxxxxxxxxxxxxxxxxxxxxx "
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" xxxxx xxxxxxxxxxx xxxxxxx "
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" xxxx xxxxxxxxx xxxxxx "
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" xxxxx xxxxxxxxxxx xxxxxxx "
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" xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx "
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" xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx "
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" xxxxxxxxxxxx xxxxxxxxxxxxxxx "
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" xxxxxxxxxxxxxxxxxxxxxxxxxxxx "
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" xxxxxxxxxxxxxxxxxxxxxxxxxxxx "
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" xxxxxxxxxxx xxxxxxxxxxxxxx "
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" xxxxxxxxxx xxxxxxxxxxxx "
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" xxxxxxxxx xxxxxxxxx "
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" xxxxxxxxxx xxxxxxxxx "
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" xxxxxxxxxxxxxxxxxxx "
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" xxxxxxxxxxxxxxxxxxx "
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" xxxxxxxxxxxxxxxxxxx "
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" xxxxxxxxxxxxxxxxx "
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" xxxxxxxxxxxxxxx "
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" xxxx xxxxxxxxxxxxx "
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" xx x xxxxxxxxxxx "
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" xxx xxxxxxxxxxx "
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" xxxx xxxxxxxxxxx "
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" xxxxxx xxxxxxxxxxxx "
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" xxxxxxxxxxxxxxxxxxxxxx "
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" xxxxxxxxxxxxxxxx "
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" ";
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c=rfbMakeXCursor(w,h,bitmap,bitmap);
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c->xhot = 16; c->yhot = 24;
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c->richSource = (char*)malloc(w*h*bpp);
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for(j=0;j<h;j++) {
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for(i=0;i<w;i++) {
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c->richSource[j*w*bpp+i*bpp+0]=i*0xff/w;
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c->richSource[j*w*bpp+i*bpp+1]=(i+j)*0xff/(w+h);
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c->richSource[j*w*bpp+i*bpp+2]=j*0xff/h;
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c->richSource[j*w*bpp+i*bpp+3]=0;
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}
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}
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rfbSetCursor(rfbScreen, c);
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}
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/* runge */
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static void SetRichCursor2(rfbScreenInfoPtr rfbScreen)
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{
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int i,j,w=17,h=16;
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/* rfbCursorPtr c = rfbScreen->cursor; */
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rfbCursorPtr c;
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char bitmap[]=
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" "
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"xxxx "
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"xxxxxxxx "
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"xxxxxxxxxxxx x"
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"xxx xxxxxxxx x"
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"xxxxxxxxxxxxxx x"
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"xxxxxxxxxxxxxxx x"
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"xxxxx xxxxxxx x"
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"xxxx xxxxxx x"
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"xxxxx xxxxxxx x"
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"xxxxxxxxxxxxxxx x"
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"xxxxxxxxxxxxxxx x"
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"xxxxxxxxxxxxxx x"
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"xxxxxxxxxxxxx x"
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"xxxxxxxxxxxxx x"
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"xxxxxxxxxxxxx x";
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/* c=rfbScreen->cursor = rfbMakeXCursor(w,h,bitmap,bitmap); */
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c=rfbMakeXCursor(w,h,bitmap,bitmap);
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c->xhot = 5; c->yhot = 7;
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c->richSource = (char*)malloc(w*h*bpp);
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for(j=0;j<h;j++) {
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for(i=0;i<w;i++) {
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c->richSource[j*w*bpp+i*bpp+0]=0xff;
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c->richSource[j*w*bpp+i*bpp+1]=0x00;
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c->richSource[j*w*bpp+i*bpp+2]=0x7f;
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c->richSource[j*w*bpp+i*bpp+3]=0;
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}
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}
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rfbSetCursor(rfbScreen, c);
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}
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/* alpha channel */
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static void SetAlphaCursor(rfbScreenInfoPtr screen,int mode)
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{
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int i,j;
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rfbCursorPtr c = screen->cursor;
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int maskStride=(c->width+7)/8;
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if(!c)
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return;
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if(c->alphaSource) {
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free(c->alphaSource);
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c->alphaSource=NULL;
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}
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if(mode==0)
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return;
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c->alphaSource = (unsigned char*)malloc(c->width*c->height);
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for(j=0;j<c->height;j++)
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for(i=0;i<c->width;i++) {
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unsigned char value=0x100*i/c->width;
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rfbBool masked=(c->mask[(i/8)+maskStride*j]<<(i&7))&0x80;
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c->alphaSource[i+c->width*j]=(masked?(mode==1?value:0xff-value):0);
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}
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if(c->cleanupMask)
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free(c->mask);
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c->mask=rfbMakeMaskFromAlphaSource(c->width,c->height,c->alphaSource);
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c->cleanupMask=TRUE;
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}
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/* Here the pointer events are handled */
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static void doptr(int buttonMask,int x,int y,rfbClientPtr cl)
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{
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static int oldButtonMask=0;
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static int counter=0;
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if((oldButtonMask&1)==0 && (buttonMask&1)==1) {
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switch(++counter) {
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case 7:
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SetRichCursor(cl->screen);
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SetAlphaCursor(cl->screen,2);
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break;
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case 6:
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SetRichCursor(cl->screen);
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SetAlphaCursor(cl->screen,1);
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break;
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case 5:
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SetRichCursor2(cl->screen);
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SetAlphaCursor(cl->screen,0);
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break;
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case 4:
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SetXCursor(cl->screen);
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break;
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case 3:
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SetRichCursor2(cl->screen);
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SetAlphaCursor(cl->screen,2);
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break;
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case 2:
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SetXCursor(cl->screen);
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SetAlphaCursor(cl->screen,2);
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break;
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case 1:
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SetXCursor2(cl->screen);
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SetAlphaCursor(cl->screen,0);
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break;
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default:
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SetRichCursor(cl->screen);
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counter=0;
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}
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}
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if(buttonMask&2) {
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rfbScreenCleanup(cl->screen);
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exit(0);
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}
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if(buttonMask&4)
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rfbCloseClient(cl);
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oldButtonMask=buttonMask;
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rfbDefaultPtrAddEvent(buttonMask,x,y,cl);
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}
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/* Initialization */
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int main(int argc,char** argv)
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{
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rfbScreenInfoPtr rfbScreen = rfbGetScreen(&argc,argv,maxx,maxy,8,3,bpp);
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if(!rfbScreen)
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return 0;
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rfbScreen->desktopName = "Cursor Test";
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rfbScreen->frameBuffer = (char*)malloc(maxx*maxy*bpp);
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rfbScreen->ptrAddEvent = doptr;
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initBuffer((unsigned char*)rfbScreen->frameBuffer);
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SetRichCursor(rfbScreen);
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/* initialize the server */
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rfbInitServer(rfbScreen);
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rfbLog("Change cursor shape with left mouse button,\n\t"
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"quit with right one (middle button quits server).\n");
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/* this is the blocking event loop, i.e. it never returns */
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/* 40000 are the microseconds to wait on select(), i.e. 0.04 seconds */
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rfbRunEventLoop(rfbScreen,40000,FALSE);
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free(rfbScreen->frameBuffer);
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rfbScreenCleanup(rfbScreen);
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return(0);
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}
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