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-rw-r--r--krfb/libvncserver/draw.c61
1 files changed, 61 insertions, 0 deletions
diff --git a/krfb/libvncserver/draw.c b/krfb/libvncserver/draw.c
new file mode 100644
index 00000000..24c41bd4
--- /dev/null
+++ b/krfb/libvncserver/draw.c
@@ -0,0 +1,61 @@
+#include "rfb.h"
+
+void rfbFillRect(rfbScreenInfoPtr s,int x1,int y1,int x2,int y2,Pixel 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,Pixel 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,Pixel 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);
+ }
+}