Pileus Git - ~andy/gtk/blob - gdk/x11/gdkdnd-x11.c

   1 #include <X11/Xlib.h>
   2 #include <X11/Xatom.h>
   3 #include <string.h>
   4 #include "gdkx.h"
   5 #include "gdk.h"
   6
   7 /* Nothing much here now, but we have to make a start some time ;-) */
   8
   9 void
  10 gdk_dnd_set_drag_cursors(GdkCursor *default_cursor, GdkCursor *goahead_cursor)
  11 {
  12   gdk_dnd.c->gdk_cursor_dragdefault =
  13     ((GdkCursorPrivate *)default_cursor)->xcursor;
  14   gdk_dnd.c->gdk_cursor_dragok = ((GdkCursorPrivate *)goahead_cursor)->xcursor;
  15
  16   if(gdk_dnd.dnd_grabbed)
  17     {
  18       if(gdk_dnd.c->drag_pm_default)
  19         /* We were displaying pixmaps for the drag */
  20         {
  21           gdk_window_hide(gdk_dnd.c->drag_pm_default);
  22           gdk_window_unref(gdk_dnd.c->drag_pm_default);
  23           if(gdk_dnd.c->drag_pm_ok)
  24             {
  25               gdk_window_hide(gdk_dnd.c->drag_pm_ok);
  26               gdk_window_unref(gdk_dnd.c->drag_pm_ok);
  27             }
  28           gdk_dnd.c->drag_pm_default = gdk_dnd.c->drag_pm_ok = NULL;
  29           g_list_free(gdk_dnd.c->xids);
  30           gdk_dnd.c->xids = NULL;
  31         }
  32       gdk_dnd_display_drag_cursor(-1, -1,
  33                                   gdk_dnd.dnd_drag_target?TRUE:FALSE,
  34                                   TRUE);
  35     }
  36 }
  37
  38 void
  39 gdk_dnd_set_drag_shape(GdkWindow *default_pixmapwin,
  40                        GdkPoint *default_hotspot,
  41                        GdkWindow *goahead_pixmapwin,
  42                        GdkPoint *goahead_hotspot)
  43 {
  44   g_return_if_fail(default_pixmapwin != NULL);
  45
  46   g_list_free(gdk_dnd.c->xids); gdk_dnd.c->xids = NULL;
  47   if(gdk_dnd.c->drag_pm_default)
  48     gdk_window_unref(gdk_dnd.c->drag_pm_default);
  49   if(gdk_dnd.c->drag_pm_ok)
  50     gdk_window_unref(gdk_dnd.c->drag_pm_ok);
  51
  52   gdk_dnd.c->drag_pm_ok = NULL;
  53
  54   gdk_window_ref(default_pixmapwin);
  55   gdk_dnd.c->drag_pm_default = default_pixmapwin;
  56   gdk_dnd.c->default_hotspot = *default_hotspot;
  57   gdk_dnd.c->xids = g_list_append(gdk_dnd.c->xids, ((GdkWindowPrivate *)default_pixmapwin)->xwindow);
  58   if(goahead_pixmapwin)
  59     {
  60       gdk_window_ref(goahead_pixmapwin);
  61       gdk_dnd.c->xids = g_list_append(gdk_dnd.c->xids, ((GdkWindowPrivate *)goahead_pixmapwin)->xwindow);
  62       gdk_dnd.c->drag_pm_ok = goahead_pixmapwin;
  63       gdk_dnd.c->ok_hotspot = *goahead_hotspot;
  64     }
  65
  66   if(gdk_dnd.dnd_grabbed)
  67     {
  68       gdk_dnd_display_drag_cursor(-1, -1,
  69                                   gdk_dnd.dnd_drag_target?TRUE:FALSE,
  70                                   TRUE);
  71       XChangeActivePointerGrab (gdk_display,
  72                                 ButtonMotionMask |
  73                                 ButtonPressMask |
  74                                 ButtonReleaseMask |
  75                                 EnterWindowMask | LeaveWindowMask,
  76                                 None,
  77                                 CurrentTime);
  78     }
  79 }
  80
  81 void
  82 gdk_dnd_display_drag_cursor(gint x, gint y, gboolean drag_ok,
  83                             gboolean change_made)
  84 {
  85   if(!gdk_dnd.dnd_grabbed)
  86     return;
  87
  88   if(gdk_dnd.c->drag_pm_default)
  89     {
  90       /* We're doing pixmaps here... */
  91       GdkWindow *mypix, *opix;
  92       GdkPoint *myhotspot;
  93       gint itmp;
  94       guint masktmp;
  95       Window wtmp;
  96
  97       if(x == -2 && y == -2) /* Hide the cursors */
  98         {
  99           gdk_window_hide(gdk_dnd.c->drag_pm_ok);
 100           gdk_window_hide(gdk_dnd.c->drag_pm_default);
 101           return;
 102         }
 103
 104       if(x == -1 && y == -1) /* We're supposed to find it out for ourselves */
 105         XQueryPointer(gdk_display, gdk_root_window,
 106                       &wtmp, &wtmp, &x, &y, &itmp, &itmp, &masktmp);
 107
 108       if(drag_ok)
 109         {
 110           mypix = gdk_dnd.c->drag_pm_ok;
 111           opix = gdk_dnd.c->drag_pm_default;
 112           myhotspot = &gdk_dnd.c->ok_hotspot;
 113         }
 114       else
 115         {
 116           mypix = gdk_dnd.c->drag_pm_default;
 117           opix = gdk_dnd.c->drag_pm_ok;
 118           myhotspot = &gdk_dnd.c->default_hotspot;
 119         }
 120       if(change_made)
 121         {
 122           gdk_window_hide(opix);
 123           gdk_window_show(mypix); /* There ought to be a way to know if
 124                                      a window is already mapped etc. */
 125         }
 126       gdk_window_move(mypix, x - myhotspot->x, y - myhotspot->y);
 127     }
 128   else if(change_made)
 129     {
 130       Cursor c;
 131       /* Move cursors around */
 132       if(drag_ok)
 133         c = gdk_dnd.c->gdk_cursor_dragok;
 134       else
 135         c = gdk_dnd.c->gdk_cursor_dragdefault;
 136       XChangeActivePointerGrab (gdk_display,
 137                                 ButtonMotionMask |
 138                                 ButtonPressMask |
 139                                 ButtonReleaseMask |
 140                                 EnterWindowMask | LeaveWindowMask,
 141                                 c,
 142                                 CurrentTime);
 143     }
 144 }