#include <stdio.h>
#include <stdlib.h>
#include <rfb/rfb.h>
#include <rfb/keysym.h>
#include <rfb/default8x16.h>
static int maxx=400, maxy=400, bpp=4;
/* odd maxx doesn't work (vncviewer bug) */
/* Here we create a structure so that every client has it's own pointer */
/* turns the framebuffer black */
void blank_framebuffer(char* frame_buffer, int x1, int y1, int x2, int y2);
/* displays a red bar, a green bar, and a blue bar */
void draw_primary_colors (char* frame_buffer, int x1, int y1, int x2, int y2);
void draw_primary_colours_generic(rfbScreenInfoPtr s,int x1,int y1,int x2,int y2);
void draw_primary_colours_generic_fast(rfbScreenInfoPtr s,int x1,int y1,int x2,int y2);
void linecount (char* frame_buffer);
/* handles mouse events */
void on_mouse_event (int buttonMask,int x,int y,rfbClientPtr cl);
/* handles keyboard events */
void on_key_press (rfbBool down,rfbKeySym key,rfbClientPtr cl);
int main (int argc, char **argv)
{
rfbScreenInfoPtr server;
if(!rfbProcessSizeArguments(&maxx,&maxy,&bpp,&argc,argv))
return 1;
server = rfbGetScreen (&argc, argv, maxx, maxy, 8, 3, bpp);
if(!server)
return 0;
server->desktopName = "Zippy das wundersquirrel\'s VNC server";
server->frameBuffer = (char*)malloc(maxx*maxy*bpp);
server->alwaysShared = TRUE;
server->kbdAddEvent = on_key_press;
server->ptrAddEvent = on_mouse_event;
rfbInitServer (server);
blank_framebuffer(server->frameBuffer, 0, 0, maxx, maxy);
rfbRunEventLoop (server, -1, FALSE);
free(server->frameBuffer);
rfbScreenCleanup (server);
return 0;
}
void blank_framebuffer(char* frame_buffer, int x1, int y1, int x2, int y2)
{
int i;
for (i=0; i < maxx * maxy * bpp; i++) frame_buffer[i]=(char) 0;
}
void draw_primary_colors (char* frame_buffer, int x1, int y1, int x2, int y2)
{
int i, j, current_pixel;
for (i=y1; i < y2; i++){
for (j=x1; j < x2; j++) {
current_pixel = (i*x2 + j) * bpp;
if (i < y2 ) {
frame_buffer[current_pixel+0] = (char) 128;
frame_buffer[current_pixel+1] = (char) 0;
frame_buffer[current_pixel+2] = (char) 0;
}
if (i < y2/3*2) {
frame_buffer[current_pixel+0] = (char) 0;
frame_buffer[current_pixel+1] = (char) 128;
frame_buffer[current_pixel+2] = (char) 0;
}
if (i < y2/3) {
frame_buffer[current_pixel+0] = (char) 0;
frame_buffer[current_pixel+1] = (char) 0;
frame_buffer[current_pixel+2] = (char) 128;
}
}
}
}
/* Dscho's versions (slower, but works for bpp != 3 or 4) */
void draw_primary_colours_generic(rfbScreenInfoPtr s,int x1,int y1,int x2,int y2)
{
rfbPixelFormat f=s->serverFormat;
int i,j;
for(j=y1;j<y2;j++)
for(i=x1;i<x2;i++)
if(j<y1*2/3+y2/3)
rfbDrawPixel(s,i,j,f.redMax<<f.redShift);
else if(j<y1/3+y2*2/3)
rfbDrawPixel(s,i,j,f.greenMax<<f.greenShift);
else
rfbDrawPixel(s,i,j,f.blueMax<<f.blueShift);
}
void draw_primary_colours_generic_fast(rfbScreenInfoPtr s,int x1,int y1,int x2,int y2)
{
rfbPixelFormat f=s->serverFormat;
int i,j,y3=(y1*2+y2)/3,y4=(y1+y2*2)/3;
/* draw first pixel */
rfbDrawPixel(s,x1,y1,f.redMax<<f.redShift);
rfbDrawPixel(s,x1,y3,f.greenMax<<f.greenShift);
rfbDrawPixel(s,x1,y4,f.blueMax<<f.blueShift);
/* then copy stripes */
for(j=0;j<y2-y4;j++)
for(i=x1;i<x2;i++) {
#define ADDR(x,y) s->frameBuffer+(x)*bpp+(y)*s->paddedWidthInBytes
memcpy(ADDR(i,j+y1),ADDR(x1,y1),bpp);
memcpy(ADDR(i,j+y3),ADDR(x1,y3),bpp);
memcpy(ADDR(i,j+y4),ADDR(x1,y4),bpp);
}
}
static void draw_primary_colours_generic_ultrafast(rfbScreenInfoPtr s,int x1,int y1,int x2,int y2)
{
rfbPixelFormat f=s->serverFormat;
int y3=(y1*2+y2)/3,y4=(y1+y2*2)/3;
/* fill rectangles */
rfbFillRect(s,x1,y1,x2,y3,f.redMax<<f.redShift);
rfbFillRect(s,x1,y3,x2,y4,f.greenMax<<f.greenShift);
rfbFillRect(s,x1,y4,x2,y2,f.blueMax<<f.blueShift);
}
void linecount (char* frame_buffer)
{
int i,j,k, current_pixel;
for (i=maxy-4; i>maxy-20; i-=4)
for (j=0; j<4; j++) for (k=0; k < maxx; k++) {
current_pixel = (i*j*maxx + k) * bpp;
if (i%2 == 0) {
frame_buffer[current_pixel+0] = (char) 0;
frame_buffer[current_pixel+1] = (char) 0;
frame_buffer[current_pixel+2] = (char) 128;
}
if (i%2 == 1) {
frame_buffer[current_pixel+0] = (char) 128;
frame_buffer[current_pixel+1] = (char) 0;
frame_buffer[current_pixel+2] = (char) 0;
}
}
}
void on_key_press (rfbBool down,rfbKeySym key,rfbClientPtr cl)
{
if (down) /* or else the action occurs on both the press and depress */
switch (key) {
case XK_b:
case XK_B:
blank_framebuffer(cl->screen->frameBuffer, 0, 0, maxx, maxy);
rfbDrawString(cl->screen,&default8x16Font,20,maxy-20,"Hello, World!",0xffffff);
rfbMarkRectAsModified(cl->screen,0, 0,maxx,maxy);
rfbLog("Framebuffer blanked\n");
break;
case XK_p:
case XK_P:
/* draw_primary_colors (cl->screen->frameBuffer, 0, 0, maxx, maxy); */
draw_primary_colours_generic_ultrafast (cl->screen, 0, 0, maxx, maxy);
rfbMarkRectAsModified(cl->screen,0, 0,maxx,maxy);
rfbLog("Primary colors displayed\n");
break;
case XK_Q:
case XK_q:
rfbLog("Exiting now\n");
exit(0);
case XK_C:
case XK_c:
rfbDrawString(cl->screen,&default8x16Font,20,100,"Hello, World!",0xffffff);
rfbMarkRectAsModified(cl->screen,0, 0,maxx,maxy);
break;
default:
rfbLog("The %c key was pressed\n", (char) key);
}
}
void on_mouse_event (int buttonMask,int x,int y,rfbClientPtr cl)
{
printf("buttonMask: %i\n"
"x: %i\n" "y: %i\n", buttonMask, x, y);
}