gtk2/gdk/linux-fb/gdkmain-fb.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.
 */

/*
 * Modified by the GTK+ Team and others 1997-2000.  See the AUTHORS
 * file for a list of people on the GTK+ Team.  See the ChangeLog
 * files for a list of changes.  These files are distributed with
 * GTK+ at ftp://ftp.gtk.org/pub/gtk/. 
 */

#include "config.h"
#include <unistd.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/mman.h>
#include <sys/ioctl.h>
#include <ctype.h>
#include <stdio.h>
#include <time.h>
#include <stdlib.h>

#include "gdk.h"

#include "gdkprivate-fb.h"
#include "gdkinternals.h"

/* Private variable declarations
 */
static int gdk_initialized = 0;			    /* 1 if the library is initialized,
						     * 0 otherwise.
						     */

#ifdef G_ENABLE_DEBUG
static const GDebugKey gdk_debug_keys[] = {
  {"misc",	    GDK_DEBUG_MISC},
  {"events",	    GDK_DEBUG_EVENTS},
};

static const int gdk_ndebug_keys = sizeof(gdk_debug_keys)/sizeof(GDebugKey);

#endif /* G_ENABLE_DEBUG */

GdkArgDesc _gdk_windowing_args[] = {
  { NULL }
};

static GdkFBDisplay *
gdk_fb_display_new(const char *filename)
{
  int fd, n;
  GdkFBDisplay *retval;

  fd = open(filename, O_RDWR);
  if(fd < 0)
    return NULL;

  retval = g_new0(GdkFBDisplay, 1);
  retval->fd = fd;
  n = ioctl(fd, FBIOGET_FSCREENINFO, &retval->sinfo);
  n |= ioctl(fd, FBIOGET_VSCREENINFO, &retval->modeinfo);
  g_assert(!n);

  /* We used to use sinfo.smem_len, but that seemed to be broken in many cases */
  retval->fbmem = mmap(NULL, retval->modeinfo.yres * retval->sinfo.line_length,
		       PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
  g_assert(retval->fbmem != MAP_FAILED);

  if(retval->sinfo.visual == FB_VISUAL_PSEUDOCOLOR)
    {
      guint16 red[256], green[256], blue[256];
      struct fb_cmap cmap;
      for(n = 0; n < 16; n++)
	red[n] = green[n] = blue[n] = n << 12;
      for(n = 16; n < 256; n++)
	red[n] = green[n] = blue[n] = n << 8;
      cmap.red = red; cmap.green = green; cmap.blue = blue; cmap.len = 256; cmap.start = 0;
      ioctl(fd, FBIOPUTCMAP, &cmap);
    }

  if(retval->sinfo.visual == FB_VISUAL_TRUECOLOR)
    {
      retval->red_byte = retval->modeinfo.red.offset >> 3;
      retval->green_byte = retval->modeinfo.green.offset >> 3;
      retval->blue_byte = retval->modeinfo.blue.offset >> 3;
    }

  return retval;
}

static void
gdk_fb_display_destroy(GdkFBDisplay *fbd)
{
  munmap(fbd->fbmem, fbd->modeinfo.yres * fbd->sinfo.line_length);
  close(fbd->fd);
  g_free(fbd);
}

extern void keyboard_init(void);

gboolean
_gdk_windowing_init_check (int argc, char **argv)
{
  if(gdk_initialized)
    return TRUE;

  keyboard_init();
  gdk_display = gdk_fb_display_new("/dev/fb");

  if(!gdk_display)
    return FALSE;

  gdk_fb_font_init();

  gdk_initialized = TRUE;

  return TRUE;
}

/*
 *--------------------------------------------------------------
 * gdk_pointer_grab
 *
 *   Grabs the pointer to a specific window
 *
 * Arguments:
 *   "window" is the window which will receive the grab
 *   "owner_events" specifies whether events will be reported as is,
 *     or relative to "window"
 *   "event_mask" masks only interesting events
 *   "confine_to" limits the cursor movement to the specified window
 *   "cursor" changes the cursor for the duration of the grab
 *   "time" specifies the time
 *
 * Results:
 *
 * Side effects:
 *   requires a corresponding call to gdk_pointer_ungrab
 *
 *--------------------------------------------------------------
 */

GdkGrabStatus
gdk_pointer_grab (GdkWindow *	  window,
		  gint		  owner_events,
		  GdkEventMask	  event_mask,
		  GdkWindow *	  confine_to,
		  GdkCursor *	  cursor,
		  guint32	  time)
{
  return gdk_fb_pointer_grab (window,
			      owner_events,
			      event_mask,
			      confine_to,
			      cursor,
			      time, FALSE);
}

static gboolean _gdk_fb_pointer_implicit_grab = FALSE;

GdkGrabStatus
gdk_fb_pointer_grab (GdkWindow *	  window,
		     gint		  owner_events,
		     GdkEventMask	  event_mask,
		     GdkWindow *	  confine_to,
		     GdkCursor *	  cursor,
		     guint32	  time,
		     gboolean implicit_grab)
{
  g_return_val_if_fail (window != NULL, 0);
  g_return_val_if_fail (GDK_IS_WINDOW (window), 0);
  g_return_val_if_fail (confine_to == NULL || GDK_IS_WINDOW (confine_to), 0);

  if(_gdk_fb_pointer_grab_window)
    {
      if(implicit_grab && !_gdk_fb_pointer_implicit_grab)
	return GDK_GRAB_ALREADY_GRABBED;

      gdk_pointer_ungrab(time);
    }

  _gdk_fb_pointer_implicit_grab = implicit_grab;

  _gdk_fb_pointer_grab_window = gdk_window_ref(window);
  _gdk_fb_pointer_grab_window_events = owner_events?NULL:_gdk_fb_pointer_grab_window;

  _gdk_fb_pointer_grab_confine = confine_to?gdk_window_ref(confine_to):NULL;
  _gdk_fb_pointer_grab_events = event_mask;
  _gdk_fb_pointer_grab_cursor = cursor?gdk_cursor_ref(cursor):NULL;

  if(cursor)
    gdk_fb_cursor_reset();

  gdk_fb_window_visibility_crossing(window, TRUE, TRUE);
  
  return GDK_GRAB_SUCCESS;
}

/*
 *--------------------------------------------------------------
 * gdk_pointer_ungrab
 *
 *   Releases any pointer grab
 *
 * Arguments:
 *
 * Results:
 *
 * Side effects:
 *
 *--------------------------------------------------------------
 */

void
gdk_pointer_ungrab (guint32 time)
{
  gdk_fb_pointer_ungrab(time, FALSE);
}

void
gdk_fb_pointer_ungrab (guint32 time, gboolean implicit_grab)
{
  gboolean have_grab_cursor = _gdk_fb_pointer_grab_cursor && 1;

  if(!_gdk_fb_pointer_grab_window)
    return;

  if(implicit_grab && !_gdk_fb_pointer_implicit_grab)
    return;

  if(_gdk_fb_pointer_grab_confine)
    gdk_window_unref(_gdk_fb_pointer_grab_confine);
  _gdk_fb_pointer_grab_confine = NULL;

  if(_gdk_fb_pointer_grab_cursor)
    gdk_cursor_unref(_gdk_fb_pointer_grab_cursor);
  _gdk_fb_pointer_grab_cursor = NULL;

  if(have_grab_cursor)
    gdk_fb_cursor_reset();

  gdk_fb_window_visibility_crossing(_gdk_fb_pointer_grab_window, FALSE, TRUE);
  
  if(_gdk_fb_pointer_grab_window)
    gdk_window_unref(_gdk_fb_pointer_grab_window);
  _gdk_fb_pointer_grab_window = NULL;
  _gdk_fb_pointer_grab_window_events = NULL;

  _gdk_fb_pointer_implicit_grab = FALSE;
}

/*
 *--------------------------------------------------------------
 * gdk_pointer_is_grabbed
 *
 *   Tell wether there is an active x pointer grab in effect
 *
 * Arguments:
 *
 * Results:
 *
 * Side effects:
 *
 *--------------------------------------------------------------
 */

gint
gdk_pointer_is_grabbed (void)
{
  return _gdk_fb_pointer_grab_window != NULL;
}

/*
 *--------------------------------------------------------------
 * gdk_keyboard_grab
 *
 *   Grabs the keyboard to a specific window
 *
 * Arguments:
 *   "window" is the window which will receive the grab
 *   "owner_events" specifies whether events will be reported as is,
 *     or relative to "window"
 *   "time" specifies the time
 *
 * Results:
 *
 * Side effects:
 *   requires a corresponding call to gdk_keyboard_ungrab
 *
 *--------------------------------------------------------------
 */

GdkGrabStatus
gdk_keyboard_grab (GdkWindow *	   window,
		   gint		   owner_events,
		   guint32	   time)
{
  g_return_val_if_fail (window != NULL, 0);
  g_return_val_if_fail (GDK_IS_WINDOW (window), 0);

  if(_gdk_fb_pointer_grab_window)
    gdk_keyboard_ungrab(time);

  if(!owner_events)
    _gdk_fb_keyboard_grab_window = gdk_window_ref(window);
  
  return GDK_GRAB_SUCCESS;
}

/*
 *--------------------------------------------------------------
 * gdk_keyboard_ungrab
 *
 *   Releases any keyboard grab
 *
 * Arguments:
 *
 * Results:
 *
 * Side effects:
 *
 *--------------------------------------------------------------
 */

void
gdk_keyboard_ungrab (guint32 time)
{
  if(_gdk_fb_keyboard_grab_window)
    gdk_window_unref(_gdk_fb_keyboard_grab_window);
  _gdk_fb_keyboard_grab_window = NULL;
}

/*
 *--------------------------------------------------------------
 * gdk_screen_width
 *
 *   Return the width of the screen.
 *
 * Arguments:
 *
 * Results:
 *
 * Side effects:
 *
 *--------------------------------------------------------------
 */

gint
gdk_screen_width (void)
{
  return gdk_display->modeinfo.xres;
}

/*
 *--------------------------------------------------------------
 * gdk_screen_height
 *
 *   Return the height of the screen.
 *
 * Arguments:
 *
 * Results:
 *
 * Side effects:
 *
 *--------------------------------------------------------------
 */

gint
gdk_screen_height (void)
{
  return gdk_display->modeinfo.yres;
}

/*
 *--------------------------------------------------------------
 * gdk_screen_width_mm
 *
 *   Return the width of the screen in millimeters.
 *
 * Arguments:
 *
 * Results:
 *
 * Side effects:
 *
 *--------------------------------------------------------------
 */

gint
gdk_screen_width_mm (void)
{
  return 0.5 + gdk_screen_width () * (25.4 / 72.);
}

/*
 *--------------------------------------------------------------
 * gdk_screen_height
 *
 *   Return the height of the screen in millimeters.
 *
 * Arguments:
 *
 * Results:
 *
 * Side effects:
 *
 *--------------------------------------------------------------
 */

gint
gdk_screen_height_mm (void)
{
  return 0.5 + gdk_screen_height () * (25.4 / 72.);
}

/*
 *--------------------------------------------------------------
 * gdk_set_sm_client_id
 *
 *   Set the SM_CLIENT_ID property on the WM_CLIENT_LEADER window
 *   so that the window manager can save our state using the
 *   X11R6 ICCCM session management protocol. A NULL value should 
 *   be set following disconnection from the session manager to
 *   remove the SM_CLIENT_ID property.
 *
 * Arguments:
 * 
 *   "sm_client_id" specifies the client id assigned to us by the
 *   session manager or NULL to remove the property.
 *
 * Results:
 *
 * Side effects:
 *
 *--------------------------------------------------------------
 */

void
gdk_set_sm_client_id (const gchar* sm_client_id)
{
}

void
gdk_key_repeat_disable (void)
{
}

void
gdk_key_repeat_restore (void)
{
}


void
gdk_beep (void)
{
}

extern void keyboard_shutdown(void);

void
gdk_windowing_exit (void)
{
  gdk_fb_display_destroy(gdk_display); gdk_display = NULL;

  gdk_fb_font_fini();

  keyboard_shutdown();
}

gchar*
gdk_keyval_name (guint	      keyval)
{
  return NULL;
}

guint
gdk_keyval_from_name (const gchar *keyval_name)
{
  return 0;
}

gchar *
gdk_get_display(void)
{
  return g_strdup("/dev/fb0");
}

/* utils */
GdkEvent *
gdk_event_make(GdkWindow *window, GdkEventType type, gboolean append_to_queue)
{
  static const guint type_masks[] = {
    GDK_SUBSTRUCTURE_MASK, /* GDK_DELETE		= 0, */
    GDK_STRUCTURE_MASK, /* GDK_DESTROY		= 1, */
    GDK_EXPOSURE_MASK, /* GDK_EXPOSE		= 2, */
    GDK_POINTER_MOTION_MASK, /* GDK_MOTION_NOTIFY	= 3, */
    GDK_BUTTON_PRESS_MASK, /* GDK_BUTTON_PRESS	= 4, */
    GDK_BUTTON_PRESS_MASK, /* GDK_2BUTTON_PRESS	= 5, */
    GDK_BUTTON_PRESS_MASK, /* GDK_3BUTTON_PRESS	= 6, */
    GDK_BUTTON_RELEASE_MASK, /* GDK_BUTTON_RELEASE	= 7, */
    GDK_KEY_PRESS_MASK, /* GDK_KEY_PRESS	= 8, */
    GDK_KEY_RELEASE_MASK, /* GDK_KEY_RELEASE	= 9, */
    GDK_ENTER_NOTIFY_MASK, /* GDK_ENTER_NOTIFY	= 10, */
    GDK_LEAVE_NOTIFY_MASK, /* GDK_LEAVE_NOTIFY	= 11, */
    GDK_FOCUS_CHANGE_MASK, /* GDK_FOCUS_CHANGE	= 12, */
    GDK_STRUCTURE_MASK, /* GDK_CONFIGURE		= 13, */
    GDK_VISIBILITY_NOTIFY_MASK, /* GDK_MAP		= 14, */
    GDK_VISIBILITY_NOTIFY_MASK, /* GDK_UNMAP		= 15, */
    GDK_PROPERTY_CHANGE_MASK, /* GDK_PROPERTY_NOTIFY	= 16, */
    GDK_PROPERTY_CHANGE_MASK, /* GDK_SELECTION_CLEAR	= 17, */
    GDK_PROPERTY_CHANGE_MASK, /* GDK_SELECTION_REQUEST = 18, */
    GDK_PROPERTY_CHANGE_MASK, /* GDK_SELECTION_NOTIFY	= 19, */
    GDK_PROXIMITY_IN_MASK, /* GDK_PROXIMITY_IN	= 20, */
    GDK_PROXIMITY_OUT_MASK, /* GDK_PROXIMITY_OUT	= 21, */
    GDK_ALL_EVENTS_MASK, /* GDK_DRAG_ENTER        = 22, */
    GDK_ALL_EVENTS_MASK, /* GDK_DRAG_LEAVE        = 23, */
    GDK_ALL_EVENTS_MASK, /* GDK_DRAG_MOTION       = 24, */
    GDK_ALL_EVENTS_MASK, /* GDK_DRAG_STATUS       = 25, */
    GDK_ALL_EVENTS_MASK, /* GDK_DROP_START        = 26, */
    GDK_ALL_EVENTS_MASK, /* GDK_DROP_FINISHED     = 27, */
    GDK_ALL_EVENTS_MASK, /* GDK_CLIENT_EVENT	= 28, */
    GDK_VISIBILITY_NOTIFY_MASK, /* GDK_VISIBILITY_NOTIFY = 29, */
    GDK_EXPOSURE_MASK, /* GDK_NO_EXPOSE		= 30, */
    GDK_SCROLL_MASK /* GDK_SCROLL            = 31 */
  };
  guint evmask;

  evmask = GDK_WINDOW_IMPL_FBDATA(window)->event_mask;

  /* Bad hack to make sure that things work semi-properly with owner_events */
  if(_gdk_fb_pointer_grab_window)
    evmask |= _gdk_fb_pointer_grab_events;
  if(_gdk_fb_keyboard_grab_window)
    evmask |= _gdk_fb_keyboard_grab_events;

  if(evmask & GDK_BUTTON_MOTION_MASK)
    {
      evmask |= GDK_BUTTON1_MOTION_MASK|GDK_BUTTON2_MOTION_MASK|GDK_BUTTON3_MOTION_MASK;
    }

  if(evmask & (GDK_BUTTON1_MOTION_MASK|GDK_BUTTON2_MOTION_MASK|GDK_BUTTON3_MOTION_MASK))
    {
      gint x, y;
      GdkModifierType mask;

      gdk_input_ps2_get_mouseinfo(&x, &y, &mask);

      if(((mask & GDK_BUTTON1_MASK) && (evmask & GDK_BUTTON1_MOTION_MASK))
	 || ((mask & GDK_BUTTON2_MASK) && (evmask & GDK_BUTTON2_MOTION_MASK))
	 || ((mask & GDK_BUTTON3_MASK) && (evmask & GDK_BUTTON3_MOTION_MASK)))
	evmask |= GDK_POINTER_MOTION_MASK;
    }

  if(evmask & type_masks[type])
    {
      GdkEvent *event = gdk_event_new();
      guint32 the_time = g_latest_time.tv_sec * 1000 + g_latest_time.tv_usec / 1000;

      event->any.type = type;
      event->any.window = gdk_window_ref(window);
      event->any.send_event = FALSE;
      switch(type)
	{
	case GDK_MOTION_NOTIFY:
	  event->motion.time = the_time;
	  event->motion.axes = NULL;
	  break;
	case GDK_BUTTON_PRESS:
	case GDK_2BUTTON_PRESS:
	case GDK_3BUTTON_PRESS:
	case GDK_BUTTON_RELEASE:
	  event->button.time = the_time;
	  event->button.axes = NULL;
	  break;
	case GDK_KEY_PRESS:
	case GDK_KEY_RELEASE:
	  event->key.time = the_time;
	  break;
	case GDK_ENTER_NOTIFY:
	case GDK_LEAVE_NOTIFY:
	  event->crossing.time = the_time;
	  break;

	case GDK_PROPERTY_NOTIFY:
	  event->property.time = the_time;
	  break;

	case GDK_SELECTION_CLEAR:
	case GDK_SELECTION_REQUEST:
	case GDK_SELECTION_NOTIFY:
	  event->selection.time = the_time;
	  break;
	case GDK_PROXIMITY_IN:
	case GDK_PROXIMITY_OUT:
	  event->proximity.time = the_time;
	  break;
	case GDK_DRAG_ENTER:
	case GDK_DRAG_LEAVE:
	case GDK_DRAG_MOTION:
	case GDK_DRAG_STATUS:
	case GDK_DROP_START:
	case GDK_DROP_FINISHED:
	  event->dnd.time = the_time;
	  break;

	case GDK_FOCUS_CHANGE:
	case GDK_CONFIGURE:
	case GDK_MAP:
	case GDK_UNMAP:
	case GDK_CLIENT_EVENT:
	case GDK_VISIBILITY_NOTIFY:
	case GDK_NO_EXPOSE:
	case GDK_SCROLL:
	case GDK_DELETE:
	case GDK_DESTROY:
	case GDK_EXPOSE:
	default:
	  break;
	}

      if(append_to_queue)
	gdk_event_queue_append(event);

      return event;
    }

  return NULL;
}

void CM(void)
{
  static gpointer mymem = NULL;
  gpointer arry[256];
  int i;

  return;

  free(mymem);

  for(i = 0; i < sizeof(arry)/sizeof(arry[0]); i++)
    arry[i] = malloc(i+1);
  for(i = 0; i < sizeof(arry)/sizeof(arry[0]); i++)
    free(arry[i]);

  mymem = malloc(256);
}

/* XXX badhack */
typedef struct _GdkWindowPaint GdkWindowPaint;

struct _GdkWindowPaint
{
  GdkRegion *region;
  GdkPixmap *pixmap;
  gint x_offset;
  gint y_offset;
};

void RP(GdkDrawable *d)
{
#if 0
  if(GDK_DRAWABLE_TYPE(d) == GDK_DRAWABLE_PIXMAP)
    {
      if(!GDK_PIXMAP_FBDATA(d)->no_free_mem)
	{
	  guchar *oldmem = GDK_DRAWABLE_FBDATA(d)->mem;
	  guint len = ((GDK_DRAWABLE_IMPL_FBDATA(d)->width * GDK_DRAWABLE_IMPL_FBDATA(d)->depth + 7) / 8) * GDK_DRAWABLE_IMPL_FBDATA(d)->height;
	  GDK_DRAWABLE_IMPL_FBDATA(d)->mem = g_malloc(len);
	  memcpy(GDK_DRAWABLE_IMPL_FBDATA(d)->mem, oldmem, len);
	  g_free(oldmem);
	}
    }
  else
    {
      GSList *priv = GDK_WINDOW_P(d)->paint_stack;
      for(; priv; priv = priv->next)
	{
	  GdkWindowPaint *p = priv->data;

	  RP(p->pixmap);
	}
    }
#endif
}