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353 lines
8.1 KiB
353 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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