San Mehat | a430b2b | 2014-09-23 08:30:51 -0700 | [diff] [blame] | 1 | /* |
| 2 | * |
| 3 | * This is an example of how to use libvncserver. |
| 4 | * |
| 5 | * libvncserver example |
| 6 | * Copyright (C) 2005 Johannes E. Schindelin <Johannes.Schindelin@gmx.de>, |
| 7 | * Karl Runge <runge@karlrunge.com> |
| 8 | * |
| 9 | * This is free software; you can redistribute it and/or modify |
| 10 | * it under the terms of the GNU General Public License as published by |
| 11 | * the Free Software Foundation; either version 2 of the License, or |
| 12 | * (at your option) any later version. |
| 13 | * |
| 14 | * This software is distributed in the hope that it will be useful, |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | * GNU General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU General Public License |
| 20 | * along with this software; if not, write to the Free Software |
| 21 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, |
| 22 | * USA. |
| 23 | */ |
| 24 | |
| 25 | #include <rfb/rfb.h> |
| 26 | |
| 27 | static const int bpp=4; |
| 28 | static int maxx=800, maxy=600; |
| 29 | |
| 30 | /* This initializes a nice (?) background */ |
| 31 | |
| 32 | static void initBuffer(unsigned char* buffer) |
| 33 | { |
| 34 | int i,j; |
| 35 | for(j=0;j<maxy;++j) { |
| 36 | for(i=0;i<maxx;++i) { |
| 37 | buffer[(j*maxx+i)*bpp+0]=(i+j)*128/(maxx+maxy); /* red */ |
| 38 | buffer[(j*maxx+i)*bpp+1]=i*128/maxx; /* green */ |
| 39 | buffer[(j*maxx+i)*bpp+2]=j*256/maxy; /* blue */ |
| 40 | } |
| 41 | } |
| 42 | } |
| 43 | |
| 44 | /* Example for an XCursor (foreground/background only) */ |
| 45 | |
| 46 | static void SetXCursor(rfbScreenInfoPtr rfbScreen) |
| 47 | { |
| 48 | int width=13,height=11; |
| 49 | char cursor[]= |
| 50 | " " |
| 51 | " xx xx " |
| 52 | " xx xx " |
| 53 | " xx xx " |
| 54 | " xx xx " |
| 55 | " xxx " |
| 56 | " xx xx " |
| 57 | " xx xx " |
| 58 | " xx xx " |
| 59 | " xx xx " |
| 60 | " ", |
| 61 | mask[]= |
| 62 | "xxxx xxxx" |
| 63 | "xxxx xxxx" |
| 64 | " xxxx xxxx " |
| 65 | " xxxx xxxx " |
| 66 | " xxxxxxx " |
| 67 | " xxxxx " |
| 68 | " xxxxxxx " |
| 69 | " xxxx xxxx " |
| 70 | " xxxx xxxx " |
| 71 | "xxxx xxxx" |
| 72 | "xxxx xxxx"; |
| 73 | rfbCursorPtr c; |
| 74 | |
| 75 | c=rfbMakeXCursor(width,height,cursor,mask); |
| 76 | c->xhot=width/2;c->yhot=height/2; |
| 77 | |
| 78 | rfbSetCursor(rfbScreen, c); |
| 79 | } |
| 80 | |
| 81 | static void SetXCursor2(rfbScreenInfoPtr rfbScreen) |
| 82 | { |
| 83 | int width=13,height=22; |
| 84 | char cursor[]= |
| 85 | " xx " |
| 86 | " x x " |
| 87 | " x x " |
| 88 | " x x " |
| 89 | " x x " |
| 90 | " x x " |
| 91 | " x x " |
| 92 | " x x " |
| 93 | " x xx x " |
| 94 | " x x x xxx " |
| 95 | " x xx x x " |
| 96 | " xx x x " |
| 97 | " xx x x " |
| 98 | " x x x " |
| 99 | " x x x " |
| 100 | " x x " |
| 101 | " x x " |
| 102 | " x x " |
| 103 | " xx " |
| 104 | " " |
| 105 | " ", |
| 106 | mask[]= |
| 107 | "xxx " |
| 108 | "xxxx " |
| 109 | "xxxxx " |
| 110 | "xxxxxx " |
| 111 | "xxxxxxx " |
| 112 | "xxxxxxxx " |
| 113 | "xxxxxxxxx " |
| 114 | "xxxxxxxxxx " |
| 115 | "xxxxxxxxxxx " |
| 116 | "xxxxxxxxxxxx " |
| 117 | "xxxxxxxxxxxxx" |
| 118 | "xxxxxxxxxxxxx" |
| 119 | "xxxxxxxxxx x" |
| 120 | "xxxxxxxxxx " |
| 121 | "xxx xxxxxx " |
| 122 | "xxx xxxxxx " |
| 123 | "xx xxxxxx " |
| 124 | " xxxxx " |
| 125 | " xxxxxx" |
| 126 | " xxxxx" |
| 127 | " xxx " |
| 128 | " "; |
| 129 | rfbCursorPtr c; |
| 130 | |
| 131 | c=rfbMakeXCursor(width,height,cursor,mask); |
| 132 | c->xhot=0;c->yhot=0; |
| 133 | |
| 134 | rfbSetCursor(rfbScreen, c); |
| 135 | } |
| 136 | |
| 137 | /* Example for a rich cursor (full-colour) */ |
| 138 | |
| 139 | static void SetRichCursor(rfbScreenInfoPtr rfbScreen) |
| 140 | { |
| 141 | int i,j,w=32,h=32; |
| 142 | /* runge */ |
| 143 | /* rfbCursorPtr c = rfbScreen->cursor; */ |
| 144 | rfbCursorPtr c; |
| 145 | char bitmap[]= |
| 146 | " " |
| 147 | " xxxxxx " |
| 148 | " xxxxxxxxxxxxxxxxx " |
| 149 | " xxxxxxxxxxxxxxxxxxxxxx " |
| 150 | " xxxxx xxxxxxxx xxxxxxxx " |
| 151 | " xxxxxxxxxxxxxxxxxxxxxxxxxxx " |
| 152 | " xxxxxxxxxxxxxxxxxxxxxxxxxxxxx " |
| 153 | " xxxxx xxxxxxxxxxx xxxxxxx " |
| 154 | " xxxx xxxxxxxxx xxxxxx " |
| 155 | " xxxxx xxxxxxxxxxx xxxxxxx " |
| 156 | " xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx " |
| 157 | " xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx " |
| 158 | " xxxxxxxxxxxx xxxxxxxxxxxxxxx " |
| 159 | " xxxxxxxxxxxxxxxxxxxxxxxxxxxx " |
| 160 | " xxxxxxxxxxxxxxxxxxxxxxxxxxxx " |
| 161 | " xxxxxxxxxxx xxxxxxxxxxxxxx " |
| 162 | " xxxxxxxxxx xxxxxxxxxxxx " |
| 163 | " xxxxxxxxx xxxxxxxxx " |
| 164 | " xxxxxxxxxx xxxxxxxxx " |
| 165 | " xxxxxxxxxxxxxxxxxxx " |
| 166 | " xxxxxxxxxxxxxxxxxxx " |
| 167 | " xxxxxxxxxxxxxxxxxxx " |
| 168 | " xxxxxxxxxxxxxxxxx " |
| 169 | " xxxxxxxxxxxxxxx " |
| 170 | " xxxx xxxxxxxxxxxxx " |
| 171 | " xx x xxxxxxxxxxx " |
| 172 | " xxx xxxxxxxxxxx " |
| 173 | " xxxx xxxxxxxxxxx " |
| 174 | " xxxxxx xxxxxxxxxxxx " |
| 175 | " xxxxxxxxxxxxxxxxxxxxxx " |
| 176 | " xxxxxxxxxxxxxxxx " |
| 177 | " "; |
| 178 | |
| 179 | c=rfbMakeXCursor(w,h,bitmap,bitmap); |
| 180 | c->xhot = 16; c->yhot = 24; |
| 181 | |
| 182 | c->richSource = (char*)malloc(w*h*bpp); |
| 183 | for(j=0;j<h;j++) { |
| 184 | for(i=0;i<w;i++) { |
| 185 | c->richSource[j*w*bpp+i*bpp+0]=i*0xff/w; |
| 186 | c->richSource[j*w*bpp+i*bpp+1]=(i+j)*0xff/(w+h); |
| 187 | c->richSource[j*w*bpp+i*bpp+2]=j*0xff/h; |
| 188 | c->richSource[j*w*bpp+i*bpp+3]=0; |
| 189 | } |
| 190 | } |
| 191 | rfbSetCursor(rfbScreen, c); |
| 192 | } |
| 193 | |
| 194 | /* runge */ |
| 195 | static void SetRichCursor2(rfbScreenInfoPtr rfbScreen) |
| 196 | { |
| 197 | int i,j,w=17,h=16; |
| 198 | /* rfbCursorPtr c = rfbScreen->cursor; */ |
| 199 | rfbCursorPtr c; |
| 200 | char bitmap[]= |
| 201 | " " |
| 202 | "xxxx " |
| 203 | "xxxxxxxx " |
| 204 | "xxxxxxxxxxxx x" |
| 205 | "xxx xxxxxxxx x" |
| 206 | "xxxxxxxxxxxxxx x" |
| 207 | "xxxxxxxxxxxxxxx x" |
| 208 | "xxxxx xxxxxxx x" |
| 209 | "xxxx xxxxxx x" |
| 210 | "xxxxx xxxxxxx x" |
| 211 | "xxxxxxxxxxxxxxx x" |
| 212 | "xxxxxxxxxxxxxxx x" |
| 213 | "xxxxxxxxxxxxxx x" |
| 214 | "xxxxxxxxxxxxx x" |
| 215 | "xxxxxxxxxxxxx x" |
| 216 | "xxxxxxxxxxxxx x"; |
| 217 | /* c=rfbScreen->cursor = rfbMakeXCursor(w,h,bitmap,bitmap); */ |
| 218 | c=rfbMakeXCursor(w,h,bitmap,bitmap); |
| 219 | c->xhot = 5; c->yhot = 7; |
| 220 | |
| 221 | c->richSource = (char*)malloc(w*h*bpp); |
| 222 | for(j=0;j<h;j++) { |
| 223 | for(i=0;i<w;i++) { |
| 224 | c->richSource[j*w*bpp+i*bpp+0]=0xff; |
| 225 | c->richSource[j*w*bpp+i*bpp+1]=0x00; |
| 226 | c->richSource[j*w*bpp+i*bpp+2]=0x7f; |
| 227 | c->richSource[j*w*bpp+i*bpp+3]=0; |
| 228 | } |
| 229 | } |
| 230 | rfbSetCursor(rfbScreen, c); |
| 231 | } |
| 232 | |
| 233 | /* alpha channel */ |
| 234 | |
| 235 | static void SetAlphaCursor(rfbScreenInfoPtr screen,int mode) |
| 236 | { |
| 237 | int i,j; |
| 238 | rfbCursorPtr c = screen->cursor; |
| 239 | int maskStride=(c->width+7)/8; |
| 240 | |
| 241 | if(!c) |
| 242 | return; |
| 243 | |
| 244 | if(c->alphaSource) { |
| 245 | free(c->alphaSource); |
| 246 | c->alphaSource=NULL; |
| 247 | } |
| 248 | |
| 249 | if(mode==0) |
| 250 | return; |
| 251 | |
| 252 | c->alphaSource = (unsigned char*)malloc(c->width*c->height); |
| 253 | |
| 254 | for(j=0;j<c->height;j++) |
| 255 | for(i=0;i<c->width;i++) { |
| 256 | unsigned char value=0x100*i/c->width; |
| 257 | rfbBool masked=(c->mask[(i/8)+maskStride*j]<<(i&7))&0x80; |
| 258 | c->alphaSource[i+c->width*j]=(masked?(mode==1?value:0xff-value):0); |
| 259 | } |
| 260 | if(c->cleanupMask) |
| 261 | free(c->mask); |
| 262 | c->mask=rfbMakeMaskFromAlphaSource(c->width,c->height,c->alphaSource); |
| 263 | c->cleanupMask=TRUE; |
| 264 | } |
| 265 | |
| 266 | /* Here the pointer events are handled */ |
| 267 | |
| 268 | static void doptr(int buttonMask,int x,int y,rfbClientPtr cl) |
| 269 | { |
| 270 | static int oldButtonMask=0; |
| 271 | static int counter=0; |
| 272 | |
| 273 | if((oldButtonMask&1)==0 && (buttonMask&1)==1) { |
| 274 | switch(++counter) { |
| 275 | case 7: |
| 276 | SetRichCursor(cl->screen); |
| 277 | SetAlphaCursor(cl->screen,2); |
| 278 | break; |
| 279 | case 6: |
| 280 | SetRichCursor(cl->screen); |
| 281 | SetAlphaCursor(cl->screen,1); |
| 282 | break; |
| 283 | case 5: |
| 284 | SetRichCursor2(cl->screen); |
| 285 | SetAlphaCursor(cl->screen,0); |
| 286 | break; |
| 287 | case 4: |
| 288 | SetXCursor(cl->screen); |
| 289 | break; |
| 290 | case 3: |
| 291 | SetRichCursor2(cl->screen); |
| 292 | SetAlphaCursor(cl->screen,2); |
| 293 | break; |
| 294 | case 2: |
| 295 | SetXCursor(cl->screen); |
| 296 | SetAlphaCursor(cl->screen,2); |
| 297 | break; |
| 298 | case 1: |
| 299 | SetXCursor2(cl->screen); |
| 300 | SetAlphaCursor(cl->screen,0); |
| 301 | break; |
| 302 | default: |
| 303 | SetRichCursor(cl->screen); |
| 304 | counter=0; |
| 305 | } |
| 306 | } |
| 307 | if(buttonMask&2) { |
| 308 | rfbScreenCleanup(cl->screen); |
| 309 | exit(0); |
| 310 | } |
| 311 | |
| 312 | if(buttonMask&4) |
| 313 | rfbCloseClient(cl); |
| 314 | |
| 315 | |
| 316 | oldButtonMask=buttonMask; |
| 317 | |
| 318 | rfbDefaultPtrAddEvent(buttonMask,x,y,cl); |
| 319 | } |
| 320 | |
| 321 | /* Initialization */ |
| 322 | |
| 323 | int main(int argc,char** argv) |
| 324 | { |
| 325 | rfbScreenInfoPtr rfbScreen = rfbGetScreen(&argc,argv,maxx,maxy,8,3,bpp); |
| 326 | if(!rfbScreen) |
| 327 | return 0; |
| 328 | |
| 329 | rfbScreen->desktopName = "Cursor Test"; |
| 330 | rfbScreen->frameBuffer = (char*)malloc(maxx*maxy*bpp); |
| 331 | rfbScreen->ptrAddEvent = doptr; |
| 332 | |
| 333 | initBuffer((unsigned char*)rfbScreen->frameBuffer); |
| 334 | |
| 335 | |
| 336 | SetRichCursor(rfbScreen); |
| 337 | |
| 338 | /* initialize the server */ |
| 339 | rfbInitServer(rfbScreen); |
| 340 | |
| 341 | rfbLog("Change cursor shape with left mouse button,\n\t" |
| 342 | "quit with right one (middle button quits server).\n"); |
| 343 | |
| 344 | /* this is the blocking event loop, i.e. it never returns */ |
| 345 | /* 40000 are the microseconds to wait on select(), i.e. 0.04 seconds */ |
| 346 | rfbRunEventLoop(rfbScreen,40000,FALSE); |
| 347 | |
| 348 | free(rfbScreen->frameBuffer); |
| 349 | rfbScreenCleanup(rfbScreen); |
| 350 | |
| 351 | return(0); |
| 352 | } |
| 353 | |