static gboolean
in_input_thumbnail (GtkWidget *widget, GdkEventMotion *event)
{
g_assert (GTK_IS_TREE_VIEW (widget));
gboolean result = FALSE; /* Result to be returned. */
GtkTreePath *tp = thumbnail_path (widget, event);
if ( tp == NULL ) {
return FALSE; /* Pointer is not over a filled in row. */
}
/* Check if we are over the input image thumbnail. */
GtkTreeViewColumn *itc = input_thumbnail_column (widget, event);
GdkRectangle itnc_rect; /* Input thumbnail cell rectangle. */
gtk_tree_view_get_cell_area (GTK_TREE_VIEW (widget), tp, itc, &itnc_rect);
/* Here we depend on the fact that the input thumbnail is packed at
the beginning of the cell horizontally, and centered in the cell
vertically (FIXME: find a way to verify this with assertions). */
GdkRectangle itn_rect; /* Input thumbnail rectangle. */
/* FIXME: fix this border hackery to be precise somehow. */
itn_rect.x = itnc_rect.x + 1; /* There is probably a small border so +1. */
itn_rect.y = itnc_rect.y + 1;
itn_rect.width = THUMB_SIZE;
itn_rect.height = THUMB_SIZE;
GdkRegion *itn_region = gdk_region_rectangle (&itn_rect);
if ( gdk_region_point_in (itn_region, (int) event->x, (int) event->y) ) {
result = TRUE;
// g_message ("Over input thumbnail!");
}
gdk_region_destroy (itn_region);
return result;
}
wxRegionContain wxRegion::DoContainsPoint( wxCoord x, wxCoord y ) const
{
if (!m_refData)
return wxOutRegion;
if (gdk_region_point_in( M_REGIONDATA->m_region, x, y ))
return wxInRegion;
else
return wxOutRegion;
}
static int cdispointinregion(cdCtxCanvas *ctxcanvas, int x, int y)
{
if (!ctxcanvas->new_rgn)
return 0;
if (gdk_region_point_in(ctxcanvas->new_rgn, x, y))
return 1;
return 0;
}
wxRegionContain wxRegion::DoContainsPoint( wxCoord x, wxCoord y ) const
{
#ifdef __WXGTK3__
if (m_refData == NULL || !cairo_region_contains_point(M_REGIONDATA->m_region, x, y))
#else
if (m_refData == NULL || !gdk_region_point_in(M_REGIONDATA->m_region, x, y))
#endif
return wxOutRegion;
return wxInRegion;
}
static gboolean
maybe_clear_popup_image (GtkWidget *widget, GdkEventMotion *event,
maybe_clear_popup_image_args_t *args)
{
//g_message ("Doing %s", __func__);
GdkWindow *popup_to_kill = args->popup;
GtkTreeView *tree_view = args->tree_view;
GdkRegion *tn_region = args->thumbnail_region; /* Thumbnail region. */
g_assert (GDK_IS_WINDOW (popup_to_kill));
g_assert (GTK_IS_TREE_VIEW (tree_view));
if ( !gdk_region_point_in (tn_region, (int) event->x, (int) event->y) ) {
//g_message ("Clearing popup state!");
gdk_window_destroy (popup_to_kill);
/* Disconnect self. */
guint signal_id = g_signal_lookup ("motion-notify-event",
GTK_WIDGET_TYPE (tree_view));
guint disconnect_count
= g_signal_handlers_disconnect_matched (tree_view,
G_SIGNAL_MATCH_ID | G_SIGNAL_MATCH_FUNC | G_SIGNAL_MATCH_DATA,
signal_id,
(GQuark) 0,
NULL,
maybe_clear_popup_image,
args);
g_assert (disconnect_count == 1);
/* Update the popup process to reflect the current position of the
pointer (i.e. deal with the event that got us in this
handler. */
update_thumbnail_popup_process (widget, event);
/* Unblock the handler for motion events on the files list. */
gulong unblock_count
= g_signal_handlers_unblock_by_func
(tree_view, files_list_motion_notify_event_handler, NULL);
g_assert (unblock_count == 1);
}
return FALSE;
}
/* Returns TRUE if a point is in a region. */
int
clip_GDK_REGIONPOINTIN(ClipMachine * ClipMachineMemory)
{
C_object *creg = _fetch_co_arg(ClipMachineMemory);
gint x = _clip_parni(ClipMachineMemory, 2);
gint y = _clip_parni(ClipMachineMemory, 3);
CHECKCOBJ(creg, GDK_IS_REGION(creg->object));
CHECKOPT(2, NUMERIC_type_of_ClipVarType);
CHECKOPT(3, NUMERIC_type_of_ClipVarType);
_clip_retl(ClipMachineMemory, gdk_region_point_in(GDK_REGION(creg), x, y));
return 0;
err:
return 1;
}
// Function to detect collisions between a given coordinate and a GList of boundary boxes
GList *detect_collisions(GList *collision_list, gdouble mouse_x, gdouble mouse_y)
{
// Local variables
guint count_int;
guint num_boundaries;
boundary_box *boundary;
// Only do this if we've been given a list of boundary boxes
if (NULL == get_boundary_list())
{
return NULL;
}
// Check if there are any boundaries to detect collisions with
set_boundary_list(g_list_first(get_boundary_list()));
num_boundaries = g_list_length(get_boundary_list());
if (0 == num_boundaries)
{
// No boundaries given, so return
return NULL;
}
// Yes there are boundaries to check
for (count_int = 0; count_int < num_boundaries; count_int++)
{
set_boundary_list(g_list_first(get_boundary_list()));
boundary = g_list_nth_data(get_boundary_list(), count_int);
if (TRUE == gdk_region_point_in(boundary->region_ptr, roundf(mouse_x), roundf(mouse_y)))
{
// Collision detected, so add it to the collision list
collision_list = g_list_first(collision_list);
collision_list = g_list_append(collision_list, boundary);
}
}
return collision_list;
}
static VALUE
rg_point_in_p(VALUE self, VALUE x, VALUE y)
{
return CBOOL2RVAL(gdk_region_point_in(_SELF(self), NUM2INT(x),
NUM2INT(y)));
}