*work in progress* quick backup

[winnie] / src / mouse.cc

diff --git a/src/mouse.cc b/src/mouse.cc
index 47a4c33..80d52be 100644 (file)
--- a/src/mouse.cc
+++ b/src/mouse.cc
@@ -8,27 +8,37 @@
 #include <termios.h>
 #include <unistd.h>
 
-#include "mouse.h"
 #include "geom.h"
+#include "gfx.h"
+#include "mouse.h"
+
+#define BN_LEFT                1
+#define BN_RIGHT       2
+#define BN_MIDDLE      4
+
 
 static int dev_fd = -1;        // file descriptor for /dev/psaux
 static Rect bounds;
 static int pointer_x, pointer_y;
+static int bnstate;
 
 bool init_mouse()
 {
-       if((dev_fd = open("/dev/psaux", O_NONBLOCK)) == -1) {
+       if((dev_fd = open("/dev/psaux", O_RDONLY)) == -1) {
                fprintf(stderr, "Cannot open /dev/psaux : %s\n", strerror(errno));
                return false;
        }
 
+       set_mouse_bounds(get_screen_size());
        return true;
 }
 
 void destroy_mouse()
 {
-       close(dev_fd);
-       dev_fd = -1;
+       if(dev_fd != -1) {
+               close(dev_fd);
+               dev_fd = -1;
+       }
 }
 
 void set_mouse_bounds(const Rect &rect)
@@ -46,7 +56,17 @@ void process_mouse_event()
        /* TODO:
         * - read all pending events from mouse fd (use O_NONBLOCK so that
         *   read will return -1 when there are no more events instead of blocking).
-        * - process each event and update the pointer and button state
+        */
+
+       int prev_state = bnstate;
+       int prev_x = pointer_x;
+       int prev_y = pointer_y;
+
+       if(read_mouse() == -1) {
+               return;
+       }
+
+       /* - process each event and update the pointer and button state
         * - send each pointer move and button press/release to the tompost window
         *   with the pointer on it.
         */
@@ -60,6 +80,47 @@ void get_pointer_pos(int *x, int *y)
 
 int get_button_state(int bn)
 {
-       // TODO
+       return bnstate;
+}
+
+int get_button(int bn)
+{
+       if(bn < 0 || bn >= 3) {
+               return 0;
+       }
+       return (bnstate & (1 << bn)) != 0;
+}
+
+
+int read_mouse()
+{
+       int rd;
+       signed char state[3] = {0, 0, 0};
+
+       if((rd = read(dev_fd, state, 3)) == -1) {
+               fprintf(stderr, "Unable to get mouse state : %s\n", strerror(errno));
+               return -1;
+       }
+
+       bnstate = state[0] & 7;
+       pointer_x += state[1];
+       pointer_y -= state[2];
+
+       if(pointer_x < bounds.x) {
+               pointer_x = bounds.x;
+       }
+
+       if(pointer_y < bounds.y) {
+               pointer_y = bounds.y;
+       }
+
+       if(pointer_x > bounds.x + bounds.width - 1) {
+               pointer_x = bounds.x + bounds.width - 1;
+       }
+
+       if(pointer_y > bounds.y + bounds.height - 1) {
+               pointer_y = bounds.y + bounds.height - 1;
+       }
+
        return 0;
 }