state added, now do the matching

Signed-off-by: Henrik Rydberg <rydberg@euromail.se>

7 files changed, 84 insertions, 10 deletions

diff --git a/src/hwdata.c b/src/hwdata.c
index 17b9a46..029d68a 100644
--- a/src/hwdata.c
+++ b/src/hwdata.c
@@ -22,13 +22,13 @@ bool read_hwdata(struct HWData *hw, const struct input_event* ev)
         case EV_KEY:
                 switch (ev->code) {
                 case BTN_LEFT:
-                        hw->left = on;
+                        hw->button[MT_BUTTON_LEFT] = on;
                         break;
                 case BTN_MIDDLE:
-                        hw->middle = on;
+                        hw->button[MT_BUTTON_MIDDLE] = on;
                         break;
                 case BTN_RIGHT:
-                        hw->right = on;
+                        hw->button[MT_BUTTON_RIGHT] = on;
                         break;
                 case BTN_MT_REPORT_PACKET:
                         if (on)
diff --git a/src/hwdata.h b/src/hwdata.h
index b9316db..239e022 100644
--- a/src/hwdata.h
+++ b/src/hwdata.h
@@ -4,6 +4,11 @@
 #include "common.h"
 
 #define DIM_FINGER 16
+#define DIM_BUTTON 3
+
+#define MT_BUTTON_LEFT 0
+#define MT_BUTTON_MIDDLE 1
+#define MT_BUTTON_RIGHT 2
 
 ////////////////////////////////////////////////////////
 
@@ -18,8 +23,7 @@ struct FingerData {
 
 struct HWData {
         struct FingerData finger[DIM_FINGER];
-        int nfinger;
-        bool left, middle, right;
+        int nfinger, button[DIM_BUTTON];
 };
 
 ////////////////////////////////////////////////////////
diff --git a/src/mtouch.c b/src/mtouch.c
index e469d2e..cb1c44c 100644
--- a/src/mtouch.c
+++ b/src/mtouch.c
@@ -18,6 +18,8 @@ int open_mtouch(struct MTouch *mt, int fd)
         int rc;
         init_iobuf(&mt->buf);
         init_hwdata(&mt->hw);
+        init_state(&mt->os);
+        init_state(&mt->ns);
         if (mt->grabbed)
                 return 0;
         SYSCALL(rc = ioctl(fd, EVIOCGRAB, (pointer)1));
diff --git a/src/mtouch.h b/src/mtouch.h
index 8324e9e..a131b40 100644
--- a/src/mtouch.h
+++ b/src/mtouch.h
@@ -4,6 +4,7 @@
 #include "capabilities.h"
 #include "iobuffer.h"
 #include "hwdata.h"
+#include "state.h"
 
 ////////////////////////////////////////////////////////
 
@@ -11,6 +12,7 @@ struct MTouch {
         struct Capabilities caps;
         struct IOBuffer buf;
         struct HWData hw;
+        struct State os, ns;
         bool grabbed;
 };
 
diff --git a/src/multitouch.c b/src/multitouch.c
index 40895c9..f6e3d05 100644
--- a/src/multitouch.c
+++ b/src/multitouch.c
@@ -79,13 +79,11 @@ static void device_close(LocalDevicePtr local)
 static void read_input(LocalDevicePtr local)
 {
         struct MTouch *mt = local->private;
-        
-        xf86Msg(X_INFO, "read_input called\n");
-        
         if (local->fd >= 0) {
                 while (read_synchronized_event(mt, local->fd)) {
-                        xf86Msg(X_INFO, "synced event\n");
-                        // do all the good stuff here
+                        modify_state(&mt->ns, &mt->hw);
+                        // and something in between here
+                        mt->os = mt->ns;
                 }
         }
 }
diff --git a/src/state.c b/src/state.c
new file mode 100644
index 0000000..46b7fef
--- /dev/null
+++ b/src/state.c
@@ -0,0 +1,38 @@
+#include "state.h"
+
+/******************************************************/
+
+void init_state(struct State *s)
+{
+        memset(s, 0, sizeof(struct State));
+}
+
+/******************************************************/
+
+void modify_state(struct State *s, const struct HWData* hw)
+{
+        int i;
+        if (s->button[0] != hw->button[0])
+                xf86Msg(X_INFO, "multitouch: button changed\n");
+        for (i = 0; i < DIM_BUTTON; i++)
+                s->button[i] = hw->button[i];
+}
+
+/******************************************************/
+
+const struct FingerState *find_finger(const struct State *s, int id)
+{
+        int i;
+        for (i = 0; i < s->nfinger; i++)
+                if (s->finger[i].id == id)
+                        return s->finger+i;
+        return NULL;
+}
+
+/******************************************************/
+
+void output_state(const struct State *s)
+{
+}
+
+/******************************************************/
diff --git a/src/state.h b/src/state.h
new file mode 100644
index 0000000..9c36617
--- /dev/null
+++ b/src/state.h
@@ -0,0 +1,30 @@
+#ifndef MTEVENT_H
+#define MTEVENT_H
+
+#include "hwdata.h"
+
+////////////////////////////////////////////////////////
+
+struct FingerState {
+        struct FingerData hw;
+        int id;
+};
+
+////////////////////////////////////////////////////////
+
+struct State {
+        struct FingerState finger[DIM_FINGER];
+        int nfinger, button[DIM_BUTTON];
+};
+
+////////////////////////////////////////////////////////
+
+void init_state(struct State *s);
+void modify_state(struct State *s, const struct HWData* hw);
+void output_state(const struct State *s);
+
+const struct FingerState *find_finger(const struct State *s, int id);
+
+////////////////////////////////////////////////////////
+
+#endif