/apps/desktop/libvncserver/draw.c
http://ftk.googlecode.com/ · C · 61 lines · 52 code · 8 blank · 1 comment · 15 complexity · 70460ea64c0fdcc2d08caf5dc83cd93b MD5 · raw file
- #include <rfb/rfb.h>
- void rfbFillRect(rfbScreenInfoPtr s,int x1,int y1,int x2,int y2,rfbPixel col)
- {
- int rowstride = s->paddedWidthInBytes, bpp = s->bitsPerPixel>>3;
- int i,j;
- char* colour=(char*)&col;
- if(!rfbEndianTest)
- colour += 4-bpp;
- for(j=y1;j<y2;j++)
- for(i=x1;i<x2;i++)
- memcpy(s->frameBuffer+j*rowstride+i*bpp,colour,bpp);
- rfbMarkRectAsModified(s,x1,y1,x2,y2);
- }
- #define SETPIXEL(x,y) \
- memcpy(s->frameBuffer+(y)*rowstride+(x)*bpp,colour,bpp)
- void rfbDrawPixel(rfbScreenInfoPtr s,int x,int y,rfbPixel col)
- {
- int rowstride = s->paddedWidthInBytes, bpp = s->bitsPerPixel>>3;
- char* colour=(char*)&col;
- if(!rfbEndianTest)
- colour += 4-bpp;
- SETPIXEL(x,y);
- rfbMarkRectAsModified(s,x,y,x+1,y+1);
- }
- void rfbDrawLine(rfbScreenInfoPtr s,int x1,int y1,int x2,int y2,rfbPixel col)
- {
- int rowstride = s->paddedWidthInBytes, bpp = s->bitsPerPixel>>3;
- int i;
- char* colour=(char*)&col;
- if(!rfbEndianTest)
- colour += 4-bpp;
- #define SWAPPOINTS { i=x1; x1=x2; x2=i; i=y1; y1=y2; y2=i; }
- if(abs(x1-x2)<abs(y1-y2)) {
- if(y1>y2)
- SWAPPOINTS
- for(i=y1;i<=y2;i++)
- SETPIXEL(x1+(i-y1)*(x2-x1)/(y2-y1),i);
- /* TODO: Maybe make this more intelligently? */
- if(x2<x1) { i=x1; x1=x2; x2=i; }
- rfbMarkRectAsModified(s,x1,y1,x2+1,y2+1);
- } else {
- if(x1>x2)
- SWAPPOINTS
- else if(x1==x2) {
- rfbDrawPixel(s,x1,y1,col);
- return;
- }
- for(i=x1;i<=x2;i++)
- SETPIXEL(i,y1+(i-x1)*(y2-y1)/(x2-x1));
- if(y2<y1) { i=y1; y1=y2; y2=i; }
- rfbMarkRectAsModified(s,x1,y1,x2+1,y2+1);
- }
- }