WebSVN – HelenOS-historic – Diff – /uspace/trunk/console/screenbuffer.c


/*
 * Copyright (C) 2006 Josef Cejka
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
#include <screenbuffer.h>
#include <malloc.h>
#include <unistd.h>
 
/** Get field from buffer that corresponds to character at position x,y at screen
 *
 */
 
int screenbuffer_putchar(screenbuffer_t *scr, char c)
{
    keyfield_t *field;
   
    field = get_field_at(scr, scr->position_x, scr->position_y);
 
    field->character = c;
    field->style = scr->style;
   
 
 
 
 
 
 
 
 
 
 
 
    return 1;
}
 
screenbuffer_t *screenbuffer_init(screenbuffer_t *scr, int size_x, int size_y)
{
    if ((scr->buffer = (keyfield_t *)malloc(sizeof(keyfield_t) * size_x * size_y)) == NULL) {
        return NULL;
    }
   
    scr->size_x = size_x;
    scr->size_y = size_y;
 
 
    scr->style.fg_color = DEFAULT_FOREGROUND_COLOR;
    scr->style.bg_color = DEFAULT_BACKGROUND_COLOR;
   
    screenbuffer_clear(scr);
   
    return scr;
}
 
void screenbuffer_clear(screenbuffer_t *scr)
{
    unsigned int i;
   
    for (i = 0; i < (scr->size_x * scr->size_y); i++) {
        scr->buffer[i].character = ' ';
        scr->buffer[i].style = scr->style;
    }
 
    scr->top_line = 0;
    scr->position_y = 0;
    scr->position_x = 0;
}
 
/** Clear one buffer line
 * @param scr
 * @param line One buffer line (not a screen line!)
 */
void screenbuffer_clear_line(screenbuffer_t *scr, unsigned int line)
{
    unsigned int i;
   
    for (i = 0; i < scr->size_x; i++) {
        scr->buffer[i + line*scr->size_x].character = ' ';
        scr->buffer[i + line*scr->size_x].style = scr->style;
    }
}
 
void screenbuffer_copy_buffer(screenbuffer_t *scr, keyfield_t *dest)
{
    unsigned int i;
   
    for (i = 0; i < scr->size_x * scr->size_y; i++) {
        dest[i] = scr->buffer[i];
    }
}
 
void screenbuffer_goto(screenbuffer_t *scr, unsigned int x, unsigned int y)
{
    scr->position_x = x % scr->size_x;
    scr->position_y = y  % scr->size_y;
}
 
 

Rev 1487	Rev 1497
1	/*	1	/*
2	* Copyright (C) 2006 Josef Cejka	2	* Copyright (C) 2006 Josef Cejka
3	* All rights reserved.	3	* All rights reserved.
4	*	4	*
5	* Redistribution and use in source and binary forms, with or without	5	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions	6	* modification, are permitted provided that the following conditions
7	* are met:	7	* are met:
8	*	8	*
9	* - Redistributions of source code must retain the above copyright	9	* - Redistributions of source code must retain the above copyright
10	* notice, this list of conditions and the following disclaimer.	10	* notice, this list of conditions and the following disclaimer.
11	* - Redistributions in binary form must reproduce the above copyright	11	* - Redistributions in binary form must reproduce the above copyright
12	* notice, this list of conditions and the following disclaimer in the	12	* notice, this list of conditions and the following disclaimer in the
13	* documentation and/or other materials provided with the distribution.	13	* documentation and/or other materials provided with the distribution.
14	* - The name of the author may not be used to endorse or promote products	14	* - The name of the author may not be used to endorse or promote products
15	* derived from this software without specific prior written permission.	15	* derived from this software without specific prior written permission.
16	*	16	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR	17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES	18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.	19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,	20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT	21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF	25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27	*/	27	*/
28		28
29	#include <screenbuffer.h>	29	#include <screenbuffer.h>
30	#include <malloc.h>	30	#include <malloc.h>
31	#include <unistd.h>	31	#include <unistd.h>
32		32
33	/** Get field from buffer that corresponds to character at position x,y at screen	33	/** Get field from buffer that corresponds to character at position x,y at screen
34	*	34	*
35	*/	35	*/
36		36
37	int screenbuffer_putchar(screenbuffer_t *scr, char c)	37	int screenbuffer_putchar(screenbuffer_t *scr, char c)
38	{	38	{
39	keyfield_t *field;	39	keyfield_t *field;
40		40
41	field = get_field_at(scr, scr->position_x, scr->position_y);	41	field = get_field_at(scr, scr->position_x, scr->position_y);
42		42
43	field->character = c;	43	field->character = c;
44	field->style = scr->style;	44	field->style = scr->style;
45		45
46	scr->position_x++;	-
47	if (scr->position_x == scr->size_x) {	-
48	scr->position_x = 0;	-
49	scr->position_y++;	-
50	if (scr->position_y == scr->size_y) {	-
51	/* scroll */	-
52	scr->position_y--;	-
53	screenbuffer_clear_line(scr, scr->top_line++);	-
54	}	-
55	}	-
56		-
57	return 1;	46	return 1;
58	}	47	}
59		48
60	screenbuffer_t screenbuffer_init(screenbuffer_t scr, int size_x, int size_y)	49	screenbuffer_t screenbuffer_init(screenbuffer_t scr, int size_x, int size_y)
61	{	50	{
62	if ((scr->buffer = (keyfield_t )malloc(sizeof(keyfield_t) size_x * size_y)) == NULL) {	51	if ((scr->buffer = (keyfield_t )malloc(sizeof(keyfield_t) size_x * size_y)) == NULL) {
63	return NULL;	52	return NULL;
64	}	53	}
65		54
66	scr->size_x = size_x;	55	scr->size_x = size_x;
67	scr->size_y = size_y;	56	scr->size_y = size_y;
68	scr->position_y = 0;	-
69	scr->position_x = 0;	-
70	scr->style.fg_color = DEFAULT_FOREGROUND_COLOR;	57	scr->style.fg_color = DEFAULT_FOREGROUND_COLOR;
71	scr->style.bg_color = DEFAULT_BACKGROUND_COLOR;	58	scr->style.bg_color = DEFAULT_BACKGROUND_COLOR;
-		59
72	scr->top_line = 0;	60	screenbuffer_clear(scr);
-		61
73	return scr;	62	return scr;
74	}	63	}
75		64
76	void screenbuffer_clear(screenbuffer_t *scr)	65	void screenbuffer_clear(screenbuffer_t *scr)
77	{	66	{
78	unsigned int i;	67	unsigned int i;
79		68
80	for (i = 0; i < scr->size_x * scr->size_y; i++) {	69	for (i = 0; i < (scr->size_x * scr->size_y); i++) {
81	scr->buffer[i].character = ' ';	70	scr->buffer[i].character = ' ';
82	scr->buffer[i].style = scr->style;	71	scr->buffer[i].style = scr->style;
83	}	72	}
84		73
85	scr->top_line = 0;	74	scr->top_line = 0;
86	scr->position_y = 0;	75	scr->position_y = 0;
87	scr->position_x = 0;	76	scr->position_x = 0;
88	}	77	}
89		78
90	/** Clear one buffer line	79	/** Clear one buffer line
91	* @param scr	80	* @param scr
92	* @param line One buffer line (not a screen line!)	81	* @param line One buffer line (not a screen line!)
93	*/	82	*/
94	void screenbuffer_clear_line(screenbuffer_t *scr, unsigned int line)	83	void screenbuffer_clear_line(screenbuffer_t *scr, unsigned int line)
95	{	84	{
96	unsigned int i;	85	unsigned int i;
97		86
98	for (i = 0; i < scr->size_x; i++) {	87	for (i = 0; i < scr->size_x; i++) {
99	scr->buffer[i + line*scr->size_x].character = ' ';	88	scr->buffer[i + line*scr->size_x].character = ' ';
100	scr->buffer[i + line*scr->size_x].style = scr->style;	89	scr->buffer[i + line*scr->size_x].style = scr->style;
101	}	90	}
102	}	91	}
103		92
104	void screenbuffer_copy_buffer(screenbuffer_t scr, keyfield_t dest)	93	void screenbuffer_copy_buffer(screenbuffer_t scr, keyfield_t dest)
105	{	94	{
106	unsigned int i;	95	unsigned int i;
107		96
108	for (i = 0; i < scr->size_x * scr->size_y; i++) {	97	for (i = 0; i < scr->size_x * scr->size_y; i++) {
109	dest[i] = scr->buffer[i];	98	dest[i] = scr->buffer[i];
110	}	99	}
111	}	100	}
112		101
113	void screenbuffer_goto(screenbuffer_t *scr, unsigned int x, unsigned int y)	102	void screenbuffer_goto(screenbuffer_t *scr, unsigned int x, unsigned int y)
114	{	103	{
115	scr->position_x = x % scr->size_x;	104	scr->position_x = x % scr->size_x;
116	scr->position_y = (y + scr->top_line) % scr->size_y;	105	scr->position_y = y % scr->size_y;
117	}	106	}
118		107
119		108

Subversion Repositories HelenOS-historic

(root)/uspace/trunk/console/screenbuffer.c – Rev 1487 → 1497