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134 lines
3.5 KiB
C
134 lines
3.5 KiB
C
/* GDK - The GIMP Drawing Kit
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* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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/*
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* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
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* file for a list of people on the GTK+ Team. See the ChangeLog
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* files for a list of changes. These files are distributed with
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* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
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*/
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#include "config.h"
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#include "gdkcursor.h"
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#include "gdkdisplay.h"
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#include "gdkinternals.h"
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/**
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* SECTION:cursors
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* @Short_description: Standard and pixmap cursors
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* @Title: Cursors
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*
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* These functions are used to create and destroy cursors.
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* There is a number of standard cursors, but it is also
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* possible to construct new cursors from pixbufs. There
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* may be limitations as to what kinds of cursors can be
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* constructed on a given display, see
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* gdk_display_supports_cursor_alpha(),
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* gdk_display_supports_cursor_color(),
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* gdk_display_get_default_cursor_size() and
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* gdk_display_get_maximal_cursor_size().
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*
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* Cursors by themselves are not very interesting, they must be be
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* bound to a window for users to see them. This is done with
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* gdk_window_set_cursor() or by setting the cursor member of the
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* #GdkWindowAttr struct passed to gdk_window_new().
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*/
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G_DEFINE_BOXED_TYPE (GdkCursor, gdk_cursor,
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gdk_cursor_ref,
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gdk_cursor_unref)
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/**
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* gdk_cursor_ref:
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* @cursor: a #GdkCursor
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*
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* Adds a reference to @cursor.
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*
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* Return value: Same @cursor that was passed in
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**/
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GdkCursor*
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gdk_cursor_ref (GdkCursor *cursor)
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{
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g_return_val_if_fail (cursor != NULL, NULL);
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g_return_val_if_fail (cursor->ref_count > 0, NULL);
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cursor->ref_count += 1;
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return cursor;
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}
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/**
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* gdk_cursor_unref:
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* @cursor: a #GdkCursor
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*
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* Removes a reference from @cursor, deallocating the cursor
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* if no references remain.
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*
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**/
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void
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gdk_cursor_unref (GdkCursor *cursor)
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{
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g_return_if_fail (cursor != NULL);
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g_return_if_fail (cursor->ref_count > 0);
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cursor->ref_count -= 1;
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if (cursor->ref_count == 0)
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_gdk_cursor_destroy (cursor);
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}
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/**
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* gdk_cursor_new:
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* @cursor_type: cursor to create
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*
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* Creates a new cursor from the set of builtin cursors for the default display.
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* See gdk_cursor_new_for_display().
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*
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* To make the cursor invisible, use %GDK_BLANK_CURSOR.
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*
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* Return value: a new #GdkCursor
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**/
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GdkCursor*
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gdk_cursor_new (GdkCursorType cursor_type)
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{
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return gdk_cursor_new_for_display (gdk_display_get_default(), cursor_type);
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}
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/**
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* gdk_cursor_get_cursor_type:
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* @cursor: a #GdkCursor
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*
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* Returns the cursor type for this cursor.
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*
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* Return value: a #GdkCursorType
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*
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* Since: 2.22
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**/
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GdkCursorType
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gdk_cursor_get_cursor_type (GdkCursor *cursor)
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{
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g_return_val_if_fail (cursor != NULL, GDK_BLANK_CURSOR);
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return cursor->type;
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}
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