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Add gdk_window_get_root_coords

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We want to be able to map any window coordinate to a root coordinate, not
just the origin, because you can't rely anymore on a simple translation
from window coordinates to parent with offscreen windows. This lets
us e.g. pop up menus in the right place even if they are popped up from
a no-window widget.
This commit is contained in:
Alexander Larsson 2009-06-08 17:03:47 +02:00
parent a8549898ab
commit 4d54de336b
5 changed files with 79 additions and 34 deletions
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36
gdk/gdkoffscreenwindow.c
View File

@ -735,35 +735,37 @@ to_parent (GdkWindow *window,
}
static gint
gdk_offscreen_window_get_origin (GdkWindow *window,
gint *x,
gint *y)
gdk_offscreen_window_get_root_coords (GdkWindow *window,
gint x,
gint y,
gint *root_x,
gint *root_y)
{
GdkWindow *parent;
int tmpx, tmpy;
tmpx = 0;
tmpy = 0;
tmpx = x;
tmpy = y;
parent = get_offscreen_parent (window);
if (parent)
{
double dx, dy;
gdk_window_get_origin (parent,
&tmpx, &tmpy);
to_parent (window,
0, 0,
x, y,
&dx, &dy);
tmpx = floor (tmpx + dx + 0.5);
tmpy = floor (tmpy + dy + 0.5);
tmpx = floor (dx + 0.5);
tmpy = floor (dy + 0.5);
gdk_window_get_root_coords (parent,
tmpx, tmpy,
&tmpx, &tmpy);
}
if (x)
*x = tmpx;
if (y)
*y = tmpy;
if (root_x)
*root_x = tmpx;
if (root_y)
*root_y = tmpy;
return TRUE;
}
@ -1217,7 +1219,7 @@ gdk_offscreen_window_impl_iface_init (GdkWindowImplIface *iface)
iface->set_static_gravities = gdk_offscreen_window_set_static_gravities;
iface->queue_antiexpose = gdk_offscreen_window_queue_antiexpose;
iface->queue_translation = gdk_offscreen_window_queue_translation;
iface->get_origin = gdk_offscreen_window_get_origin;
iface->get_root_coords = gdk_offscreen_window_get_root_coords;
iface->get_deskrelative_origin = gdk_offscreen_window_get_deskrelative_origin;
iface->get_pointer = gdk_offscreen_window_get_pointer;
iface->destroy = gdk_offscreen_window_destroy;

44
gdk/gdkwindow.c
View File

@ -6952,12 +6952,46 @@ gdk_window_get_origin (GdkWindow *window,
private = (GdkWindowObject *) window;
GDK_WINDOW_IMPL_GET_IFACE (private->impl)->get_origin (window, x, y);
GDK_WINDOW_IMPL_GET_IFACE (private->impl)->get_root_coords (window,
private->abs_x,
private->abs_y,
x, y);
if (x)
*x += private->abs_x;
if (y)
*y += private->abs_y;
return TRUE;
}
/**
* gdk_window_get_root_coords:
* @window: a #GdkWindow
* @x: X coordinate in window
* @y: Y coordinate in window
* @root_x: return location for X coordinate
* @root_y: return location for Y coordinate
*
* Obtains the position of a window position in root
* window coordinates. This is similar to
* gdk_window_get_origin() but allows you go pass
* in any position in the window, not just the origin.
*
* Return value: not meaningful, ignore
*/
gint
gdk_window_get_root_coords (GdkWindow *window,
gint x,
gint y,
gint *root_x,
gint *root_y)
{
GdkWindowObject *private;
g_return_val_if_fail (GDK_IS_WINDOW (window), 0);
private = (GdkWindowObject *) window;
GDK_WINDOW_IMPL_GET_IFACE (private->impl)->get_root_coords (window,
x + private->abs_x,
y + private->abs_y,
root_x, root_y);
return TRUE;
}

5
gdk/gdkwindow.h
View File

@ -531,6 +531,11 @@ void gdk_window_get_position (GdkWindow *window,
gint gdk_window_get_origin (GdkWindow *window,
gint *x,
gint *y);
gint gdk_window_get_root_coords (GdkWindow *window,
gint x,
gint y,
gint *root_x,
gint *root_y);
#if !defined (GDK_DISABLE_DEPRECATED) || defined (GTK_COMPILATION)
/* Used by gtk_handle_box_button_changed () */

8
gdk/gdkwindowimpl.h
View File

@ -80,9 +80,11 @@ struct _GdkWindowImplIface
gint *width,
gint *height,
gint *depth);
gint (* get_origin) (GdkWindow *window,
gint *x,
gint *y);
gint (* get_root_coords) (GdkWindow *window,
gint x,
gint y,
gint *root_x,
gint *root_y);
gint (* get_deskrelative_origin) (GdkWindow *window,
gint *x,
gint *y);

20
gdk/x11/gdkwindow-x11.c
View File

@ -2759,9 +2759,11 @@ gdk_window_x11_get_geometry (GdkWindow *window,
}
static gint
gdk_window_x11_get_origin (GdkWindow *window,
gint *x,
gint *y)
gdk_window_x11_get_root_coords (GdkWindow *window,
gint x,
gint y,
gint *root_x,
gint *root_y)
{
gint return_val;
Window child;
@ -2773,16 +2775,16 @@ gdk_window_x11_get_origin (GdkWindow *window,
return_val = XTranslateCoordinates (GDK_WINDOW_XDISPLAY (window),
GDK_WINDOW_XID (window),
GDK_WINDOW_XROOTWIN (window),
0, 0, &tx, &ty,
x, y, &tx, &ty,
&child);
}
else
return_val = 0;
if (x)
*x = tx;
if (y)
*y = ty;
if (root_x)
*root_x = tx;
if (root_y)
*root_y = ty;
return return_val;
}
@ -5575,7 +5577,7 @@ gdk_window_impl_iface_init (GdkWindowImplIface *iface)
iface->reparent = gdk_window_x11_reparent;
iface->set_cursor = gdk_window_x11_set_cursor;
iface->get_geometry = gdk_window_x11_get_geometry;
iface->get_origin = gdk_window_x11_get_origin;
iface->get_root_coords = gdk_window_x11_get_root_coords;
iface->get_pointer = gdk_window_x11_get_pointer;
iface->get_deskrelative_origin = gdk_window_x11_get_deskrelative_origin;
iface->shape_combine_region = gdk_window_x11_shape_combine_region;