gtk/gdk/linux-fb/gdkmouse-fb.c
Matthias Clasen 6de551b504 Fix many sparse warnings. (#157253, Kjartan Maraas.
2004-11-10  Matthias Clasen  <mclasen@redhat.com>

	* gdk/linux-fb/*: Fix many sparse warnings.  (#157253,
	Kjartan Maraas.
2004-11-10 13:30:55 +00:00

865 lines
20 KiB
C

/* GDK - The GIMP Drawing Kit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include <config.h>
#include <gdk/gdk.h>
#include <gdk/gdkinternals.h>
#include "gdkprivate-fb.h"
#include "gdkinputprivate.h"
#include <stdlib.h>
#include <sys/types.h>
#include <fcntl.h>
#include <termios.h>
#include <sys/ioctl.h>
#include <string.h>
#include <math.h>
#include <unistd.h>
#include <errno.h>
typedef struct _GdkFBMouse GdkFBMouse;
typedef struct _GdkFBMouseDevice GdkFBMouseDevice;
struct _GdkFBMouse {
gint fd; /* Set by open */
gchar *file;
/* These are written to by parse_packet */
gdouble x, y;
gboolean button_pressed[3];
guchar mouse_packet[5]; /* read by parse_packet */
gint packet_nbytes;
gboolean click_grab;
GIOChannel *io;
gint io_tag;
GdkFBMouseDevice *dev;
};
static GdkFBMouse *gdk_fb_mouse = NULL;
void
gdk_fb_mouse_get_info (gint *x,
gint *y,
GdkModifierType *mask)
{
if (x)
*x = gdk_fb_mouse->x;
if (y)
*y = gdk_fb_mouse->y;
if (mask)
*mask =
(gdk_fb_mouse->button_pressed[0]?GDK_BUTTON1_MASK:0) |
(gdk_fb_mouse->button_pressed[1]?GDK_BUTTON2_MASK:0) |
(gdk_fb_mouse->button_pressed[2]?GDK_BUTTON3_MASK:0) |
gdk_fb_keyboard_modifiers ();
}
static void
handle_mouse_movement(GdkFBMouse *mouse)
{
GdkWindow *mousewin;
GdkEvent *event;
gint x, y;
GdkWindow *old_win, *win, *event_win, *cursor_win;
guint state;
GdkDrawableFBData *mousewin_private;
old_win = gdk_window_at_pointer (NULL, NULL);
if (_gdk_fb_pointer_grab_confine)
mousewin = _gdk_fb_pointer_grab_confine;
else
mousewin = _gdk_parent_root;
mousewin_private = GDK_DRAWABLE_IMPL_FBDATA (mousewin);
if (mouse->x < mousewin_private->llim_x)
mouse->x = mousewin_private->llim_x;
else if (mouse->x > mousewin_private->lim_x - 1)
mouse->x = mousewin_private->lim_x - 1;
if (mouse->y < mousewin_private->llim_y)
mouse->y = mousewin_private->llim_y;
else if (mouse->y > mousewin_private->lim_y - 1)
mouse->y = mousewin_private->lim_y - 1;
win = gdk_window_at_pointer (NULL, NULL);
cursor_win = win;
if (_gdk_fb_pointer_grab_window)
{
GdkWindow *w;
cursor_win = _gdk_fb_pointer_grab_window;
w = win;
while (w != _gdk_parent_root)
{
if (w == _gdk_fb_pointer_grab_window)
{
cursor_win = win;
break;
}
w = gdk_window_get_parent (w);
}
}
gdk_fb_cursor_move (mouse->x, mouse->y, cursor_win);
event_win = gdk_fb_pointer_event_window (win, GDK_MOTION_NOTIFY);
if (event_win && (win == old_win))
{
/* Only send motion events in the same window */
gdk_window_get_origin (event_win, &x, &y);
x = mouse->x - x;
y = mouse->y - y;
state = (mouse->button_pressed[0]?GDK_BUTTON1_MASK:0) |
(mouse->button_pressed[1]?GDK_BUTTON2_MASK:0) |
(mouse->button_pressed[2]?GDK_BUTTON3_MASK:0) |
gdk_fb_keyboard_modifiers ();
event = gdk_event_make (event_win, GDK_MOTION_NOTIFY, TRUE);
event->motion.x = x;
event->motion.y = y;
event->motion.state = state;
event->motion.is_hint = FALSE;
event->motion.device = _gdk_core_pointer;
event->motion.x_root = mouse->x;
event->motion.y_root = mouse->y;
}
gdk_fb_window_send_crossing_events (NULL, win, GDK_CROSSING_NORMAL);
}
static void
send_button_event (GdkFBMouse *mouse,
guint button,
gboolean press_event)
{
GdkEvent *event;
gint x, y, i;
GdkWindow *mouse_win;
GdkWindow *event_win;
int nbuttons;
mouse_win = gdk_window_at_pointer(NULL, NULL);
event_win = gdk_fb_pointer_event_window (mouse_win,
press_event ? GDK_BUTTON_PRESS : GDK_BUTTON_RELEASE);
if (event_win)
{
event = gdk_event_make (event_win, press_event ? GDK_BUTTON_PRESS : GDK_BUTTON_RELEASE, FALSE);
gdk_window_get_origin (event_win, &x, &y);
x = mouse->x - x;
y = mouse->y - y;
event->button.x = x;
event->button.y = y;
event->button.button = button;
event->button.state = (mouse->button_pressed[0]?GDK_BUTTON1_MASK:0) |
(mouse->button_pressed[1] ? GDK_BUTTON2_MASK : 0) |
(mouse->button_pressed[2] ? GDK_BUTTON3_MASK : 0) |
(1 << (button + 8)) /* badhack */ |
gdk_fb_keyboard_modifiers ();
event->button.device = _gdk_core_pointer;
event->button.x_root = mouse->x;
event->button.y_root = mouse->y;
_gdk_event_queue_append (gdk_display_get_default (), event);
/* For double-clicks */
if (press_event)
_gdk_event_button_generate (gdk_display_get_default (), event);
}
nbuttons = 0;
for (i=0;i<3;i++)
if (mouse->button_pressed[i])
nbuttons++;
/* Handle implicit button grabs: */
if (press_event && nbuttons == 1)
{
gdk_fb_pointer_grab (mouse_win, FALSE,
gdk_window_get_events (mouse_win),
NULL, NULL,
GDK_CURRENT_TIME, TRUE);
mouse->click_grab = TRUE;
}
else if (!press_event && nbuttons == 0 && mouse->click_grab)
{
gdk_fb_pointer_ungrab (GDK_CURRENT_TIME, TRUE);
mouse->click_grab = FALSE;
}
}
static void
handle_mouse_scroll (GdkFBMouse *mouse,
gboolean up)
{
GdkEvent *event;
gint x, y;
GdkWindow *mouse_win;
mouse_win = gdk_window_at_pointer(NULL, NULL);
event = gdk_event_make (mouse_win, GDK_SCROLL, FALSE);
gdk_window_get_origin (mouse_win, &x, &y);
x = mouse->x - x;
y = mouse->y - y;
event->button.window = mouse_win;
event->scroll.direction = up ? GDK_SCROLL_UP : GDK_SCROLL_DOWN;
event->scroll.window = mouse_win;
event->scroll.time = GDK_CURRENT_TIME;
event->scroll.x = x;
event->scroll.y = y;
event->scroll.x_root = mouse->x;
event->scroll.y_root = mouse->y;
event->scroll.state = gdk_fb_keyboard_modifiers ();
event->scroll.device = _gdk_core_pointer;
_gdk_event_queue_append (gdk_display_get_default (), event);
}
/******************************************************
************ Device specific mouse code **************
******************************************************/
/* proto is used to detect the start of the packet:
* (buf[0]&proto[0]) == proto[1]
* indicates start of packet.
*/
struct _GdkFBMouseDevice {
gchar *name;
gchar *file;
gint packet_size;
gboolean (*open)(GdkFBMouse *mouse);
void (*close)(GdkFBMouse *mouse);
gboolean (*parse_packet)(GdkFBMouse *mouse, gboolean *got_motion);
guchar proto[2];
};
static gboolean handle_mouse_io (GIOChannel *gioc,
GIOCondition cond,
gpointer data);
static gboolean gdk_fb_mouse_ps2_open (GdkFBMouse *mouse);
static gboolean gdk_fb_mouse_imps2_open (GdkFBMouse *mouse);
static void gdk_fb_mouse_ps2_close (GdkFBMouse *mouse);
static gboolean gdk_fb_mouse_ps2_packet (GdkFBMouse *mouse,
gboolean *got_motion);
static gboolean gdk_fb_mouse_ms_open (GdkFBMouse *mouse);
static void gdk_fb_mouse_ms_close (GdkFBMouse *mouse);
static gboolean gdk_fb_mouse_ms_packet (GdkFBMouse *mouse,
gboolean *got_motion);
static gboolean gdk_fb_mouse_fidmour_open (GdkFBMouse *mouse);
static void gdk_fb_mouse_fidmour_close (GdkFBMouse *mouse);
static gboolean gdk_fb_mouse_fidmour_packet (GdkFBMouse *mouse,
gboolean *got_motion);
static GdkFBMouseDevice mouse_devs[] =
{
{ "ps2",
"/dev/psaux",
3,
gdk_fb_mouse_ps2_open,
gdk_fb_mouse_ps2_close,
gdk_fb_mouse_ps2_packet,
{ 0xc0, 0x00 }
},
{ "imps2",
"/dev/psaux",
4,
gdk_fb_mouse_imps2_open,
gdk_fb_mouse_ps2_close,
gdk_fb_mouse_ps2_packet,
{ 0xc0, 0x00 }
},
{ "ms",
"/dev/mouse",
3,
gdk_fb_mouse_ms_open,
gdk_fb_mouse_ms_close,
gdk_fb_mouse_ms_packet,
{ 0x40, 0x40 }
},
{ "fidmour",
"/dev/fidmour",
5,
gdk_fb_mouse_fidmour_open,
gdk_fb_mouse_fidmour_close,
gdk_fb_mouse_fidmour_packet,
{ 0x00, 0x00 } /* don't know what packet start looks like */
}
};
gboolean
gdk_fb_mouse_init (gboolean open_dev)
{
gchar *mouse_type, *mouse_file;
gint i;
gdk_fb_mouse = g_new0 (GdkFBMouse, 1);
gdk_fb_mouse->fd = -1;
mouse_type = getenv ("GDK_MOUSE_TYPE");
if (!mouse_type)
mouse_type = "ps2";
for (i=0;i<G_N_ELEMENTS(mouse_devs);i++)
{
if (g_ascii_strcasecmp(mouse_type, mouse_devs[i].name)==0)
break;
}
if (i == G_N_ELEMENTS(mouse_devs))
{
g_warning ("No mouse driver of type %s found", mouse_type);
return FALSE;
}
gdk_fb_mouse->dev = &mouse_devs[i];
mouse_file = getenv ("GDK_MOUSE_FILE");
if (!mouse_file)
mouse_file = gdk_fb_mouse->dev->file;
gdk_fb_mouse->file = mouse_file;
gdk_fb_mouse->x = gdk_display->fb_width / 2;
gdk_fb_mouse->y = gdk_display->fb_height / 2;
if (open_dev)
return gdk_fb_mouse_open ();
else
return TRUE;
}
gboolean
gdk_fb_mouse_open (void)
{
GdkFBMouseDevice *device;
device = gdk_fb_mouse->dev;
if (!device->open(gdk_fb_mouse))
{
g_warning ("Mouse driver open failed");
return FALSE;
}
gdk_fb_mouse->io =
g_io_channel_unix_new (gdk_fb_mouse->fd);
gdk_fb_mouse->io_tag =
g_io_add_watch (gdk_fb_mouse->io,
G_IO_IN|G_IO_ERR|G_IO_HUP|G_IO_NVAL,
handle_mouse_io, gdk_fb_mouse);
return TRUE;
}
void
gdk_fb_mouse_close (void)
{
if (gdk_fb_mouse->io_tag)
{
g_source_remove (gdk_fb_mouse->io_tag);
gdk_fb_mouse->io_tag = 0;
}
gdk_fb_mouse->dev->close(gdk_fb_mouse);
if (gdk_fb_mouse->io)
{
g_io_channel_unref (gdk_fb_mouse->io);
gdk_fb_mouse->io = NULL;
}
}
static gboolean
handle_mouse_io (GIOChannel *gioc,
GIOCondition cond,
gpointer data)
{
GdkFBMouse *mouse = (GdkFBMouse *)data;
GdkFBMouseDevice *dev = mouse->dev;
guchar *proto = dev->proto;
gboolean got_motion;
gint n, i;
got_motion = FALSE;
while (1)
{
n = read (mouse->fd, mouse->mouse_packet + mouse->packet_nbytes, dev->packet_size - mouse->packet_nbytes);
if (n<=0) /* error or nothing to read */
break;
/* we just read in what should be the first byte of a packet */
if (mouse->packet_nbytes == 0)
{
/* check to see if we have the first byte of a packet.
* if not, throw it away */
while ((mouse->mouse_packet[0] & proto[0]) != proto[1] && n > 0)
{
for (i = 1; i < n; i++)
mouse->mouse_packet[i-1] = mouse->mouse_packet[i];
n--;
}
/* if none of the bytes read were packet starts, break */
if (n <= 0)
break;
}
mouse->packet_nbytes += n;
if (mouse->packet_nbytes == dev->packet_size)
{
if (dev->parse_packet (mouse, &got_motion))
mouse->packet_nbytes = 0;
}
}
if (got_motion)
handle_mouse_movement (mouse);
return TRUE;
}
static gint
gdk_fb_mouse_dev_open (char *devname, gint mode)
{
gint fd;
/* Use nonblocking mode to open, to not hang on device */
fd = open (devname, mode | O_NONBLOCK);
return fd;
}
static gboolean
write_all (gint fd,
gchar *buf,
gsize to_write)
{
while (to_write > 0)
{
gssize count = write (fd, buf, to_write);
if (count < 0)
{
if (errno != EINTR)
return FALSE;
}
else
{
to_write -= count;
buf += count;
}
}
return TRUE;
}
static gboolean
gdk_fb_mouse_ps2_open (GdkFBMouse *mouse)
{
gint fd;
guchar buf[7];
int i = 0;
fd = gdk_fb_mouse_dev_open (mouse->file, O_RDWR);
if (fd < 0)
{
g_print ("Error opening %s: %s\n", mouse->file, strerror (errno));
return FALSE;
}
/* From xf86_Mouse.c */
buf[i++] = 230; /* 1:1 scaling */
buf[i++] = 244; /* enable mouse */
buf[i++] = 243; /* Sample rate */
buf[i++] = 200;
buf[i++] = 232; /* device resolution */
buf[i++] = 1;
if (!write_all (fd, buf, i))
{
close (fd);
return FALSE;
}
usleep (10000); /* sleep 10 ms, then read whatever junk we can get from the mouse, in a vain attempt
to get synchronized with the event stream */
while ((i = read (fd, buf, sizeof(buf))) > 0)
g_print ("Got %d bytes of junk from psaux\n", i);
mouse->fd = fd;
return TRUE;
}
static gboolean
gdk_fb_mouse_imps2_open (GdkFBMouse *mouse)
{
gint fd;
guchar buf[7];
int i = 0;
fd = gdk_fb_mouse_dev_open (mouse->file, O_RDWR);
if (fd < 0)
{
g_print ("Error opening %s: %s\n", mouse->file, strerror (errno));
return FALSE;
}
i = 0;
buf[i++] = 243; /* Sample rate */
buf[i++] = 200;
buf[i++] = 243; /* Sample rate */
buf[i++] = 100;
buf[i++] = 243; /* Sample rate */
buf[i++] = 80;
buf[i++] = 242;
if (!write_all (fd, buf, i))
{
close (fd);
return FALSE;
}
if (read (fd, buf, 1) != 1)
{
close (fd);
return FALSE;
}
i = 0;
buf[i++] = 230; /* 1:1 scaling */
buf[i++] = 244; /* enable mouse */
buf[i++] = 243; /* Sample rate */
buf[i++] = 100;
buf[i++] = 232; /* device resolution */
buf[i++] = 3;
if (!write_all (fd, buf, i))
{
close (fd);
return FALSE;
}
mouse->fd = fd;
return TRUE;
}
static void
gdk_fb_mouse_ps2_close (GdkFBMouse *mouse)
{
close (mouse->fd);
mouse->fd = -1;
}
static gboolean
gdk_fb_mouse_ps2_packet (GdkFBMouse *mouse, gboolean *got_motion)
{
int dx=0, dy=0;
gboolean new_button1, new_button2, new_button3;
guchar *buf;
buf = mouse->mouse_packet;
new_button1 = (buf[0] & 1) && 1;
new_button3 = (buf[0] & 2) && 1;
new_button2 = (buf[0] & 4) && 1;
if (mouse->dev->packet_size == 4 && buf[3] != 0)
handle_mouse_scroll (mouse, buf[3] & 0x80);
if (*got_motion &&
(new_button1 != mouse->button_pressed[0] ||
new_button2 != mouse->button_pressed[1] ||
new_button3 != mouse->button_pressed[2]))
{
/* If a mouse button state changes we need to get correct ordering with enter/leave events,
so push those out via handle_mouse_input */
*got_motion = FALSE;
handle_mouse_movement (mouse);
}
if (new_button1 != mouse->button_pressed[0])
{
mouse->button_pressed[0] = new_button1;
send_button_event (mouse, 1, new_button1);
}
if (new_button2 != mouse->button_pressed[1])
{
mouse->button_pressed[1] = new_button2;
send_button_event (mouse, 2, new_button2);
}
if (new_button3 != mouse->button_pressed[2])
{
mouse->button_pressed[2] = new_button3;
send_button_event (mouse, 3, new_button3);
}
if (buf[1] != 0)
dx = ((buf[0] & 0x10) ? ((gint)buf[1])-256 : buf[1]);
else
dx = 0;
if (buf[2] != 0)
dy = -((buf[0] & 0x20) ? ((gint)buf[2])-256 : buf[2]);
else
dy = 0;
mouse->x += dx;
mouse->y += dy;
if (dx || dy)
*got_motion = TRUE;
return TRUE;
}
static gboolean
gdk_fb_mouse_ms_open (GdkFBMouse *mouse)
{
gint fd;
gint i;
guchar buf[7];
struct termios tty;
fd = gdk_fb_mouse_dev_open (mouse->file, O_RDWR);
if (fd < 0)
{
g_print ("Error opening %s: %s\n", mouse->file, strerror (errno));
return FALSE;
}
while ((i = read (fd, buf, sizeof(buf))) > 0)
g_print ("Got %d bytes of junk from %s\n", i, mouse->file);
tcgetattr (fd, &tty);
tty.c_iflag = IGNBRK | IGNPAR;
tty.c_cflag = CREAD|CLOCAL|HUPCL|CS7|B1200;
tty.c_oflag = 0;
tty.c_lflag = 0;
tty.c_line = 0;
tty.c_cc[VTIME] = 0;
tty.c_cc[VMIN] = 1;
tcsetattr (fd, TCSAFLUSH, &tty);
if (!write_all (fd, "*n", 2))
{
close (fd);
return FALSE;
}
mouse->fd = fd;
return TRUE;
}
static void
gdk_fb_mouse_ms_close (GdkFBMouse *mouse)
{
close (mouse->fd);
mouse->fd = -1;
}
static gboolean
gdk_fb_mouse_ms_packet (GdkFBMouse *mouse,
gboolean *got_motion)
{
int dx=0, dy=0;
gboolean new_button1, new_button2, new_button3;
guchar *buf;
static guchar prev = 0;
buf = mouse->mouse_packet;
/* handling of third button is adapted from gpm ms driver */
if (buf[0] == 0x40 && !(prev|buf[1]|buf[2]))
{
new_button1 = 0;
new_button2 = 1;
new_button3 = 0;
}
else
{
new_button1 = (buf[0] & 0x20) && 1;
new_button2 = 0;
new_button3 = (buf[0] & 0x10) && 1;
}
prev = (new_button1 << 2) | (new_button2 << 1) | (new_button3 << 0);
if (*got_motion &&
(new_button1 != mouse->button_pressed[0] ||
new_button2 != mouse->button_pressed[1] ||
new_button3 != mouse->button_pressed[2]))
{
/* If a mouse button state changes we need to get correct ordering with enter/leave events,
so push those out via handle_mouse_input */
*got_motion = FALSE;
handle_mouse_movement (mouse);
}
if (new_button1 != mouse->button_pressed[0])
{
mouse->button_pressed[0] = new_button1;
send_button_event (mouse, 1, new_button1);
}
if (new_button2 != mouse->button_pressed[1])
{
mouse->button_pressed[1] = new_button2;
send_button_event (mouse, 2, new_button2);
}
if (new_button3 != mouse->button_pressed[2])
{
mouse->button_pressed[2] = new_button3;
send_button_event (mouse, 3, new_button3);
}
dx = (signed char)(((buf[0] & 0x03) << 6) | (buf[1] & 0x3F));
dy = (signed char)(((buf[0] & 0x0C) << 4) | (buf[2] & 0x3F));
mouse->x += dx;
mouse->y += dy;
if (dx || dy)
*got_motion = TRUE;
return TRUE;
}
static gboolean
gdk_fb_mouse_fidmour_open (GdkFBMouse *mouse)
{
gint fd;
fd = gdk_fb_mouse_dev_open (mouse->file, O_RDONLY);
if (fd < 0)
{
g_print ("Error opening %s: %s\n", mouse->file, strerror (errno));
return FALSE;
}
mouse->fd = fd;
return TRUE;
}
static void
gdk_fb_mouse_fidmour_close (GdkFBMouse *mouse)
{
close (mouse->fd);
}
static gboolean
gdk_fb_mouse_fidmour_packet (GdkFBMouse *mouse,
gboolean *got_motion)
{
int n;
gboolean btn_down = 0;
gdouble x = 0.0, y = 0.0;
n = 0;
if (!(mouse->mouse_packet[0] & 0x80))
{
int i;
/* We haven't received any of the packet yet but there is no header at the beginning */
for (i = 1; i < mouse->packet_nbytes; i++)
{
if (mouse->mouse_packet[i] & 0x80)
{
n = i;
break;
}
}
}
else if (mouse->packet_nbytes > 1 &&
((mouse->mouse_packet[0] & 0x90) == 0x90))
{
/* eat the 0x90 and following byte, no clue what it's for */
n = 2;
}
else
{
switch (mouse->mouse_packet[0] & 0xF)
{
case 2:
btn_down = 0;
break;
case 1:
case 0:
btn_down = 1;
break;
default:
g_assert_not_reached ();
break;
}
x = mouse->mouse_packet[1] + (mouse->mouse_packet[2] << 7);
if (x > 8192)
x -= 16384;
y = mouse->mouse_packet[3] + (mouse->mouse_packet[4] << 7);
if (y > 8192)
y -= 16384;
/* Now map touchscreen coords to screen coords */
x *= ((double)gdk_display->fb_width)/4096.0;
y *= ((double)gdk_display->fb_height)/4096.0;
}
if (n)
{
memmove (mouse->mouse_packet, mouse->mouse_packet+n, mouse->packet_nbytes-n);
mouse->packet_nbytes -= n;
return FALSE;
}
if (btn_down != mouse->button_pressed[0])
{
if (*got_motion)
{
/* If a mouse button state changes we need to get correct
ordering with enter/leave events, so push those out
via handle_mouse_input */
*got_motion = FALSE;
handle_mouse_movement (mouse);
}
mouse->button_pressed[0] = btn_down;
send_button_event (mouse, 1, btn_down);
}
if (fabs(x - mouse->x) >= 1.0 || fabs(x - mouse->y) >= 1.0)
{
*got_motion = TRUE;
mouse->x = x;
mouse->y = y;
}
return TRUE;
}