mirror of
https://gitlab.gnome.org/GNOME/gtk.git
synced 2024-11-18 08:00:04 +00:00
134 lines
3.5 KiB
C
134 lines
3.5 KiB
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 "gdkcursor.h"
|
|
|
|
#include "gdkdisplay.h"
|
|
#include "gdkinternals.h"
|
|
|
|
|
|
/**
|
|
* SECTION:cursors
|
|
* @Short_description: Standard and pixmap cursors
|
|
* @Title: Cursors
|
|
*
|
|
* These functions are used to create and destroy cursors.
|
|
* There is a number of standard cursors, but it is also
|
|
* possible to construct new cursors from pixbufs. There
|
|
* may be limitations as to what kinds of cursors can be
|
|
* constructed on a given display, see
|
|
* gdk_display_supports_cursor_alpha(),
|
|
* gdk_display_supports_cursor_color(),
|
|
* gdk_display_get_default_cursor_size() and
|
|
* gdk_display_get_maximal_cursor_size().
|
|
*
|
|
* Cursors by themselves are not very interesting, they must be be
|
|
* bound to a window for users to see them. This is done with
|
|
* gdk_window_set_cursor() or by setting the cursor member of the
|
|
* #GdkWindowAttr struct passed to gdk_window_new().
|
|
*/
|
|
|
|
|
|
G_DEFINE_BOXED_TYPE (GdkCursor, gdk_cursor,
|
|
gdk_cursor_ref,
|
|
gdk_cursor_unref)
|
|
|
|
/**
|
|
* gdk_cursor_ref:
|
|
* @cursor: a #GdkCursor
|
|
*
|
|
* Adds a reference to @cursor.
|
|
*
|
|
* Return value: Same @cursor that was passed in
|
|
**/
|
|
GdkCursor*
|
|
gdk_cursor_ref (GdkCursor *cursor)
|
|
{
|
|
g_return_val_if_fail (cursor != NULL, NULL);
|
|
g_return_val_if_fail (cursor->ref_count > 0, NULL);
|
|
|
|
cursor->ref_count += 1;
|
|
|
|
return cursor;
|
|
}
|
|
|
|
/**
|
|
* gdk_cursor_unref:
|
|
* @cursor: a #GdkCursor
|
|
*
|
|
* Removes a reference from @cursor, deallocating the cursor
|
|
* if no references remain.
|
|
*
|
|
**/
|
|
void
|
|
gdk_cursor_unref (GdkCursor *cursor)
|
|
{
|
|
g_return_if_fail (cursor != NULL);
|
|
g_return_if_fail (cursor->ref_count > 0);
|
|
|
|
cursor->ref_count -= 1;
|
|
|
|
if (cursor->ref_count == 0)
|
|
_gdk_cursor_destroy (cursor);
|
|
}
|
|
|
|
/**
|
|
* gdk_cursor_new:
|
|
* @cursor_type: cursor to create
|
|
*
|
|
* Creates a new cursor from the set of builtin cursors for the default display.
|
|
* See gdk_cursor_new_for_display().
|
|
*
|
|
* To make the cursor invisible, use %GDK_BLANK_CURSOR.
|
|
*
|
|
* Return value: a new #GdkCursor
|
|
**/
|
|
GdkCursor*
|
|
gdk_cursor_new (GdkCursorType cursor_type)
|
|
{
|
|
return gdk_cursor_new_for_display (gdk_display_get_default(), cursor_type);
|
|
}
|
|
|
|
/**
|
|
* gdk_cursor_get_cursor_type:
|
|
* @cursor: a #GdkCursor
|
|
*
|
|
* Returns the cursor type for this cursor.
|
|
*
|
|
* Return value: a #GdkCursorType
|
|
*
|
|
* Since: 2.22
|
|
**/
|
|
GdkCursorType
|
|
gdk_cursor_get_cursor_type (GdkCursor *cursor)
|
|
{
|
|
g_return_val_if_fail (cursor != NULL, GDK_BLANK_CURSOR);
|
|
|
|
return cursor->type;
|
|
}
|