1 #include <rfb/rfb.h>
2 
rfbFillRect(rfbScreenInfoPtr s,int x1,int y1,int x2,int y2,rfbPixel col)3 void rfbFillRect(rfbScreenInfoPtr s,int x1,int y1,int x2,int y2,rfbPixel col)
4 {
5   int rowstride = s->paddedWidthInBytes, bpp = s->bitsPerPixel>>3;
6   int i,j;
7   char* colour=(char*)&col;
8 
9    if(!rfbEndianTest)
10     colour += 4-bpp;
11   for(j=y1;j<y2;j++)
12     for(i=x1;i<x2;i++)
13       memcpy(s->frameBuffer+j*rowstride+i*bpp,colour,bpp);
14   rfbMarkRectAsModified(s,x1,y1,x2,y2);
15 }
16 
17 #define SETPIXEL(x,y) \
18   memcpy(s->frameBuffer+(y)*rowstride+(x)*bpp,colour,bpp)
19 
rfbDrawPixel(rfbScreenInfoPtr s,int x,int y,rfbPixel col)20 void rfbDrawPixel(rfbScreenInfoPtr s,int x,int y,rfbPixel col)
21 {
22   int rowstride = s->paddedWidthInBytes, bpp = s->bitsPerPixel>>3;
23   char* colour=(char*)&col;
24 
25   if(!rfbEndianTest)
26     colour += 4-bpp;
27   SETPIXEL(x,y);
28   rfbMarkRectAsModified(s,x,y,x+1,y+1);
29 }
30 
rfbDrawLine(rfbScreenInfoPtr s,int x1,int y1,int x2,int y2,rfbPixel col)31 void rfbDrawLine(rfbScreenInfoPtr s,int x1,int y1,int x2,int y2,rfbPixel col)
32 {
33   int rowstride = s->paddedWidthInBytes, bpp = s->bitsPerPixel>>3;
34   int i;
35   char* colour=(char*)&col;
36 
37   if(!rfbEndianTest)
38     colour += 4-bpp;
39 
40 #define SWAPPOINTS { i=x1; x1=x2; x2=i; i=y1; y1=y2; y2=i; }
41   if(abs(x1-x2)<abs(y1-y2)) {
42     if(y1>y2)
43       SWAPPOINTS
44     for(i=y1;i<=y2;i++)
45       SETPIXEL(x1+(i-y1)*(x2-x1)/(y2-y1),i);
46     /* TODO: Maybe make this more intelligently? */
47     if(x2<x1) { i=x1; x1=x2; x2=i; }
48     rfbMarkRectAsModified(s,x1,y1,x2+1,y2+1);
49   } else {
50     if(x1>x2)
51       SWAPPOINTS
52     else if(x1==x2) {
53       rfbDrawPixel(s,x1,y1,col);
54       return;
55     }
56     for(i=x1;i<=x2;i++)
57       SETPIXEL(i,y1+(i-x1)*(y2-y1)/(x2-x1));
58     if(y2<y1) { i=y1; y1=y2; y2=i; }
59     rfbMarkRectAsModified(s,x1,y1,x2+1,y2+1);
60   }
61 }
62