23 static int read_mouse();
25 static int dev_fd = -1; // file descriptor for /dev/psaux
27 static int pointer_x, pointer_y;
32 if((dev_fd = open("/dev/psaux", O_RDONLY | O_NONBLOCK)) == -1) {
33 fprintf(stderr, "Cannot open /dev/psaux : %s\n", strerror(errno));
37 set_mouse_bounds(get_screen_size());
49 void set_mouse_bounds(const Rect &rect)
59 void process_mouse_event()
62 * - read all pending events from mouse fd (use O_NONBLOCK so that
63 * read will return -1 when there are no more events instead of blocking).
66 int prev_state = bnstate;
67 int prev_x = pointer_x;
68 int prev_y = pointer_y;
70 if(read_mouse() == -1) {
75 if(!(top = wm->get_grab_window())) {
76 top = wm->get_window_at_pos(pointer_x, pointer_y);
78 wm->set_focused_window(top);
81 wm->set_focused_window(0);
85 /* - send each pointer move and button press/release to the topmost window
86 * with the pointer on it.
89 int dx = pointer_x - prev_x;
90 int dy = pointer_y - prev_y;
92 if((dx || dy) && top) {
93 MouseMotionFuncType motion_callback = top->get_mouse_motion_callback();
95 Rect rect = top->get_absolute_rect();
96 motion_callback(top, pointer_x - rect.x, pointer_y - rect.y);
100 MouseButtonFuncType button_callback;
101 if((bnstate != prev_state) && top && (button_callback = top->get_mouse_button_callback())) {
102 int num_bits = sizeof bnstate * CHAR_BIT;
103 for(int i=0; i<num_bits; i++) {
104 int s = (bnstate >> i) & 1;
105 int prev_s = (prev_state >> i) & 1;
107 Rect rect = top->get_absolute_rect();
108 button_callback(top, i, s, pointer_x - rect.x, pointer_y - rect.y);
114 void get_pointer_pos(int *x, int *y)
120 int get_button_state()
125 int get_button(int bn)
127 if(bn < 0 || bn >= 3) {
130 return (bnstate & (1 << bn)) != 0;
133 static int read_mouse()
136 signed char state[3] = {0, 0, 0};
138 if((rd = read(dev_fd, state, 3)) == -1) {
139 fprintf(stderr, "Unable to get mouse state : %s\n", strerror(errno));
143 bnstate = state[0] & 7;
144 pointer_x += state[1];
145 pointer_y -= state[2];
147 if(pointer_x < bounds.x) {
148 pointer_x = bounds.x;
151 if(pointer_y < bounds.y) {
152 pointer_y = bounds.y;
155 if(pointer_x > bounds.x + bounds.width - 1) {
156 pointer_x = bounds.x + bounds.width - 1;
159 if(pointer_y > bounds.y + bounds.height - 1) {
160 pointer_y = bounds.y + bounds.height - 1;
165 #endif // WINNIE_FBDEV