Import sources from 2011-03-30 iso image

1 files changed, 117 insertions, 0 deletions

diff --git a/sys/src/cmd/aux/accupoint.c b/sys/src/cmd/aux/accupoint.c
new file mode 100755
index 000000000..cb50ab83b
--- /dev/null
+++ b/sys/src/cmd/aux/accupoint.c
@@ -0,0 +1,117 @@
+#include <u.h>
+#include <libc.h>
+#include <draw.h>
+#include <event.h>
+
+/*
+ * Convert AccuPoint buttons 4 and 5 to a simulation of button 2.
+ * The buttons generate down events, repeat, and have no up events,
+ * so it's a struggle. This program turns the left button into a near-as-
+ * possible simulation of a regular button 2, but it can only sense up
+ * events by timeout, so it's sluggish.  Thus it also turns the right button
+ * into a click on button 2, useful for acme and chords.
+ */
+
+typedef struct M M;
+
+struct M
+{
+	Mouse;
+	int	byte;
+};
+
+int	button2;
+int	interrupted;
+
+int
+readmouse(M *m)
+{
+	char buf[1+4*12];
+	int n;
+
+	n = read(0, buf, sizeof buf);
+	if(n < 0)
+		return n;
+	if(n != sizeof buf)
+		return 0;
+	m->byte = buf[0];
+	m->xy.x =  atoi(buf+1+0*12);
+	m->xy.y =  atoi(buf+1+1*12);
+	m->buttons =  atoi(buf+1+2*12);
+	m->msec =  atoi(buf+1+3*12);
+	return 1;
+}
+
+void
+writemouse(M *m)
+{
+	print("%c%11d %11d %11d %11ld ",
+		m->byte,
+		m->xy.x,
+		m->xy.y,
+		m->buttons&7,
+		m->msec);
+}
+
+void
+notifyf(void*, char *s)
+{
+	if(strcmp(s, "alarm") == 0)
+		interrupted = 1;
+	noted(NCONT);
+}
+
+void
+main(void)
+{
+	M m, om;
+	int n;
+
+	notify(notifyf);
+	memset(&m, 0, sizeof m);
+	om = m;
+	for(;;){
+		interrupted = 0;
+		/* first click waits 500ms before repeating; after that they're 150, but that's ok */
+		if(button2)
+			alarm(550);
+		n = readmouse(&m);
+		if(button2)
+			alarm(0);
+		if(interrupted){
+			/* timed out; clear button 2 */
+			om.buttons &= ~2;
+			button2 = 0;
+			writemouse(&om);
+			continue;
+		}
+		if(n <= 0)
+			break;
+		/* avoid bounce caused by button 5 click */
+		if((om.buttons&16) && (m.buttons&16)){
+			om.buttons &= ~16;
+			continue;
+		}
+		if(m.buttons & 2)
+			button2 = 0;
+		else{
+			/* only check 4 and 5 if 2 isn't down of its own accord */
+			if(m.buttons & 16){
+				/* generate quick button 2 click */
+				button2 = 0;
+				m.buttons |= 2;
+				writemouse(&m);
+				m.buttons &= ~2;
+				/* fall through to generate up event */
+			}else if(m.buttons & 8){
+				/* press and hold button 2 */
+				button2 = 1;
+			}
+		}
+		if(button2)
+			m.buttons |= 2;
+		if(m.byte!=om.byte || m.buttons!=om.buttons || !eqpt(m.xy, om.xy))
+			writemouse(&m);
+		om = m;
+	}
+}