/* * * This is an example of how to use libvncserver. * * libvncserver example * Copyright (C) 2005 Johannes E. Schindelin , * Karl Runge * * 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. */ #include static const int bpp=4; static int maxx=800, maxy=600; /* This initializes a nice (?) background */ static void initBuffer(unsigned char* buffer) { int i,j; for(j=0;jxhot=width/2;c->yhot=height/2; rfbSetCursor(rfbScreen, c); } static void SetXCursor2(rfbScreenInfoPtr rfbScreen) { int width=13,height=22; char cursor[]= " xx " " x x " " x x " " x x " " x x " " x x " " x x " " x x " " x xx x " " x x x xxx " " x xx x x " " xx x x " " xx x x " " x x x " " x x x " " x x " " x x " " x x " " xx " " " " ", mask[]= "xxx " "xxxx " "xxxxx " "xxxxxx " "xxxxxxx " "xxxxxxxx " "xxxxxxxxx " "xxxxxxxxxx " "xxxxxxxxxxx " "xxxxxxxxxxxx " "xxxxxxxxxxxxx" "xxxxxxxxxxxxx" "xxxxxxxxxx x" "xxxxxxxxxx " "xxx xxxxxx " "xxx xxxxxx " "xx xxxxxx " " xxxxx " " xxxxxx" " xxxxx" " xxx " " "; rfbCursorPtr c; c=rfbMakeXCursor(width,height,cursor,mask); c->xhot=0;c->yhot=0; rfbSetCursor(rfbScreen, c); } /* Example for a rich cursor (full-colour) */ static void SetRichCursor(rfbScreenInfoPtr rfbScreen) { int i,j,w=32,h=32; /* runge */ /* rfbCursorPtr c = rfbScreen->cursor; */ rfbCursorPtr c; 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=rfbMakeXCursor(w,h,bitmap,bitmap); c->xhot = 16; c->yhot = 24; c->richSource = (char*)malloc(w*h*bpp); for(j=0;jrichSource[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; } } rfbSetCursor(rfbScreen, c); } /* runge */ static void SetRichCursor2(rfbScreenInfoPtr rfbScreen) { int i,j,w=17,h=16; /* rfbCursorPtr c = rfbScreen->cursor; */ rfbCursorPtr c; char bitmap[]= " " "xxxx " "xxxxxxxx " "xxxxxxxxxxxx x" "xxx xxxxxxxx x" "xxxxxxxxxxxxxx x" "xxxxxxxxxxxxxxx x" "xxxxx xxxxxxx x" "xxxx xxxxxx x" "xxxxx xxxxxxx x" "xxxxxxxxxxxxxxx x" "xxxxxxxxxxxxxxx x" "xxxxxxxxxxxxxx x" "xxxxxxxxxxxxx x" "xxxxxxxxxxxxx x" "xxxxxxxxxxxxx x"; /* c=rfbScreen->cursor = rfbMakeXCursor(w,h,bitmap,bitmap); */ c=rfbMakeXCursor(w,h,bitmap,bitmap); c->xhot = 5; c->yhot = 7; c->richSource = (char*)malloc(w*h*bpp); for(j=0;jrichSource[j*w*bpp+i*bpp+0]=0xff; c->richSource[j*w*bpp+i*bpp+1]=0x00; c->richSource[j*w*bpp+i*bpp+2]=0x7f; c->richSource[j*w*bpp+i*bpp+3]=0; } } rfbSetCursor(rfbScreen, c); } /* alpha channel */ static void SetAlphaCursor(rfbScreenInfoPtr screen,int mode) { int i,j; rfbCursorPtr c = screen->cursor; int maskStride=(c->width+7)/8; if(!c) return; if(c->alphaSource) { free(c->alphaSource); c->alphaSource=NULL; } if(mode==0) return; c->alphaSource = (unsigned char*)malloc(c->width*c->height); for(j=0;jheight;j++) for(i=0;iwidth;i++) { unsigned char value=0x100*i/c->width; rfbBool masked=(c->mask[(i/8)+maskStride*j]<<(i&7))&0x80; c->alphaSource[i+c->width*j]=(masked?(mode==1?value:0xff-value):0); } if(c->cleanupMask) free(c->mask); c->mask=rfbMakeMaskFromAlphaSource(c->width,c->height,c->alphaSource); c->cleanupMask=TRUE; } /* Here the pointer events are handled */ static void doptr(int buttonMask,int x,int y,rfbClientPtr cl) { static int oldButtonMask=0; static int counter=0; if((oldButtonMask&1)==0 && (buttonMask&1)==1) { switch(++counter) { case 7: SetRichCursor(cl->screen); SetAlphaCursor(cl->screen,2); break; case 6: SetRichCursor(cl->screen); SetAlphaCursor(cl->screen,1); break; case 5: SetRichCursor2(cl->screen); SetAlphaCursor(cl->screen,0); break; case 4: SetXCursor(cl->screen); break; case 3: SetRichCursor2(cl->screen); SetAlphaCursor(cl->screen,2); break; case 2: SetXCursor(cl->screen); SetAlphaCursor(cl->screen,2); break; case 1: SetXCursor2(cl->screen); SetAlphaCursor(cl->screen,0); break; default: SetRichCursor(cl->screen); counter=0; } } if(buttonMask&2) { rfbScreenCleanup(cl->screen); exit(0); } if(buttonMask&4) rfbCloseClient(cl); oldButtonMask=buttonMask; rfbDefaultPtrAddEvent(buttonMask,x,y,cl); } /* Initialization */ int main(int argc,char** argv) { rfbScreenInfoPtr rfbScreen = rfbGetScreen(&argc,argv,maxx,maxy,8,3,bpp); if(!rfbScreen) return 0; rfbScreen->desktopName = "Cursor Test"; rfbScreen->frameBuffer = (char*)malloc(maxx*maxy*bpp); rfbScreen->ptrAddEvent = doptr; initBuffer((unsigned char*)rfbScreen->frameBuffer); SetRichCursor(rfbScreen); /* initialize the server */ rfbInitServer(rfbScreen); rfbLog("Change cursor shape with left mouse button,\n\t" "quit with right one (middle button quits server).\n"); /* 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); free(rfbScreen->frameBuffer); rfbScreenCleanup(rfbScreen); return(0); }