Import sources from 2011-03-30 iso image

1 files changed, 69 insertions, 0 deletions

diff --git a/sys/src/libdraw/draw.c b/sys/src/libdraw/draw.c
new file mode 100755
index 000000000..d3f83e885
--- /dev/null
+++ b/sys/src/libdraw/draw.c
@@ -0,0 +1,69 @@
+#include <u.h>
+#include <libc.h>
+#include <draw.h>
+
+void
+_setdrawop(Display *d, Drawop op)
+{
+	uchar *a;
+
+	if(op != SoverD){
+		a = bufimage(d, 1+1);
+		if(a == 0)
+			return;
+		a[0] = 'O';
+		a[1] = op;
+	}
+}
+		
+static void
+draw1(Image *dst, Rectangle *r, Image *src, Point *p0, Image *mask, Point *p1, Drawop op)
+{
+	uchar *a;
+
+	_setdrawop(dst->display, op);
+
+	a = bufimage(dst->display, 1+4+4+4+4*4+2*4+2*4);
+	if(a == 0)
+		return;
+	if(src == nil)
+		src = dst->display->black;
+	if(mask == nil)
+		mask = dst->display->opaque;
+	a[0] = 'd';
+	BPLONG(a+1, dst->id);
+	BPLONG(a+5, src->id);
+	BPLONG(a+9, mask->id);
+	BPLONG(a+13, r->min.x);
+	BPLONG(a+17, r->min.y);
+	BPLONG(a+21, r->max.x);
+	BPLONG(a+25, r->max.y);
+	BPLONG(a+29, p0->x);
+	BPLONG(a+33, p0->y);
+	BPLONG(a+37, p1->x);
+	BPLONG(a+41, p1->y);
+}
+
+void
+draw(Image *dst, Rectangle r, Image *src, Image *mask, Point p1)
+{
+	draw1(dst, &r, src, &p1, mask, &p1, SoverD);
+}
+
+void
+drawop(Image *dst, Rectangle r, Image *src, Image *mask, Point p1, Drawop op)
+{
+	draw1(dst, &r, src, &p1, mask, &p1, op);
+}
+
+void
+gendraw(Image *dst, Rectangle r, Image *src, Point p0, Image *mask, Point p1)
+{
+	draw1(dst, &r, src, &p0, mask, &p1, SoverD);
+}
+
+void
+gendrawop(Image *dst, Rectangle r, Image *src, Point p0, Image *mask, Point p1, Drawop op)
+{
+	draw1(dst, &r, src, &p0, mask, &p1, op);
+}