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     {
  49       gdk_window_hide(gdk_dnd.c->drag_pm_default);
  50       gdk_window_unref(gdk_dnd.c->drag_pm_default);
  51     }
  52   if(gdk_dnd.c->drag_pm_ok)
  53     {
  54       gdk_window_hide(gdk_dnd.c->drag_pm_ok);
  55       gdk_window_unref(gdk_dnd.c->drag_pm_ok);
  56     }
  57
  58   gdk_dnd.c->drag_pm_ok = NULL;
  59
  60   gdk_window_ref(default_pixmapwin);
  61   gdk_dnd.c->drag_pm_default = default_pixmapwin;
  62   gdk_dnd.c->default_hotspot = *default_hotspot;
  63   gdk_dnd.c->xids = g_list_append(gdk_dnd.c->xids, GUINT_TO_GPOINTER (((GdkWindowPrivate *)default_pixmapwin)->xwindow));
  64   if(goahead_pixmapwin)
  65     {
  66       gdk_window_ref(goahead_pixmapwin);
  67       gdk_dnd.c->xids = g_list_append(gdk_dnd.c->xids, GUINT_TO_GPOINTER (((GdkWindowPrivate *)goahead_pixmapwin)->xwindow));
  68       gdk_dnd.c->drag_pm_ok = goahead_pixmapwin;
  69       gdk_dnd.c->ok_hotspot = *goahead_hotspot;
  70     }
  71
  72   if(gdk_dnd.dnd_grabbed)
  73     {
  74       gdk_dnd_display_drag_cursor(-1, -1,
  75                                   gdk_dnd.dnd_drag_target?TRUE:FALSE,
  76                                   TRUE);
  77       XChangeActivePointerGrab (gdk_display,
  78                                 ButtonMotionMask |
  79                                 ButtonPressMask |
  80                                 ButtonReleaseMask |
  81                                 EnterWindowMask | LeaveWindowMask,
  82                                 None,
  83                                 CurrentTime);
  84     }
  85 }
  86
  87 void
  88 gdk_dnd_display_drag_cursor(gint x, gint y, gboolean drag_ok,
  89                             gboolean change_made)
  90 {
  91   if(!gdk_dnd.dnd_grabbed)
  92     return;
  93
  94   if(gdk_dnd.c->drag_pm_default)
  95     {
  96       /* We're doing pixmaps here... */
  97       GdkWindow *mypix, *opix;
  98       GdkPoint *myhotspot;
  99       gint itmp;
 100       guint masktmp;
 101       Window wtmp;
 102
 103       if(x == -2 && y == -2) /* Hide the cursors */
 104         {
 105           gdk_window_hide(gdk_dnd.c->drag_pm_ok);
 106           gdk_window_hide(gdk_dnd.c->drag_pm_default);
 107           GDK_NOTE(DND, g_print("Hiding both drag cursors\n"));
 108           return;
 109         }
 110
 111       if(x == -1 && y == -1) /* We're supposed to find it out for ourselves */
 112         XQueryPointer(gdk_display, gdk_root_window,
 113                       &wtmp, &wtmp, &x, &y, &itmp, &itmp, &masktmp);
 114
 115       if(drag_ok)
 116         {
 117           GDK_NOTE(DND, g_print("Switching to drag_ok cursor\n"));
 118           mypix = gdk_dnd.c->drag_pm_ok;
 119           opix = gdk_dnd.c->drag_pm_default;
 120           myhotspot = &gdk_dnd.c->ok_hotspot;
 121         }
 122       else
 123         {
 124           GDK_NOTE(DND, g_print("Switching to drag_default cursor\n"));
 125           mypix = gdk_dnd.c->drag_pm_default;
 126           opix = gdk_dnd.c->drag_pm_ok;
 127           myhotspot = &gdk_dnd.c->default_hotspot;
 128         }
 129       gdk_window_move(mypix, x - myhotspot->x, y - myhotspot->y);
 130       if(change_made)
 131         {
 132           GDK_NOTE(DND, g_print("Cursors switched, hide & show\n"));
 133           gdk_window_hide(opix);
 134         }
 135       gdk_window_move(mypix, x - myhotspot->x, y - myhotspot->y);
 136       if (change_made)
 137         {
 138           gdk_window_show(mypix); /* There ought to be a way to know if
 139                                      a window is already mapped etc. */
 140         }
 141     }
 142   else if(change_made)
 143     {
 144       Cursor c;
 145       /* Move cursors around */
 146       if(drag_ok)
 147         c = gdk_dnd.c->gdk_cursor_dragok;
 148       else
 149         c = gdk_dnd.c->gdk_cursor_dragdefault;
 150       XChangeActivePointerGrab (gdk_display,
 151                                 ButtonMotionMask |
 152                                 ButtonPressMask |
 153                                 ButtonReleaseMask |
 154                                 EnterWindowMask | LeaveWindowMask,
 155                                 c,
 156                                 CurrentTime);
 157     }
 158 }