/src/ftk_display.c

 1/*
 2 * File: ftk_display.c
 3 * Author:  Li XianJing <xianjimli@hotmail.com>
 4 * Brief:   display
 5 *
 6 * Copyright (c) 2009 - 2010  Li XianJing <xianjimli@hotmail.com>
 7 *
 8 * Licensed under the Academic Free License version 2.1
 9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
23 */
24
25/*
26 * History:
27 * ================================================================
28 * 2009-11-22 Li XianJing <xianjimli@hotmail.com> created
29 *
30 */
31
32#include "ftk_display.h"
33
34Ret ftk_display_reg_update_listener(FtkDisplay* thiz, FtkDisplayOnUpdate on_update, void* ctx)
35{
36	int i = 0;
37	return_val_if_fail(thiz != NULL && on_update != NULL, RET_FAIL);
38
39	for(i = 0; i < FTK_DISPLAY_LISTENER_NR; i++)
40	{
41		if(thiz->on_update[i] == NULL)
42		{
43			thiz->on_update[i] = on_update;
44			thiz->on_update_ctx[i] = ctx;
45
46			return RET_OK;
47		}
48	}
49
50	return RET_FAIL;
51}
52
53Ret ftk_display_unreg_update_listener(FtkDisplay* thiz, FtkDisplayOnUpdate on_update, void* ctx)
54{
55	int i = 0;
56	return_val_if_fail(thiz != NULL && on_update != NULL, RET_FAIL);
57
58	for(i = 0; i < FTK_DISPLAY_LISTENER_NR; i++)
59	{
60		if(thiz->on_update[i] == on_update && thiz->on_update_ctx[i] == ctx)
61		{
62			thiz->on_update[i] = NULL;
63			thiz->on_update_ctx[i] = NULL;
64
65			return RET_OK;
66		}
67	}
68
69	return RET_FAIL;
70}
71
72Ret ftk_display_notify(FtkDisplay* thiz, int before, FtkBitmap* bitmap, FtkRect* rect, int xoffset, int yoffset)
73{
74	int i = 0;
75	return_val_if_fail(thiz != NULL, RET_FAIL);
76
77	for(i = 0; i < FTK_DISPLAY_LISTENER_NR; i++)
78	{
79		if(thiz->on_update[i] != NULL)
80		{
81			thiz->on_update[i](thiz->on_update_ctx[i], thiz, before, bitmap, rect, xoffset, yoffset);
82		}
83	}
84			
85	return RET_OK;
86}
87