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>
 
/** Store one character to screenbuffer. Its position is determined by scr->position_x and scr->position_y.
 * @param scr   screenbuffer
 * @param c stored character
 */
 
void 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;
 
 
}
 
/** Initilize screenbuffer. Allocate space for screen content in accordance to given size.
 * @param scr       initialized screenbuffer
 * @param size_x   
 * @param size_y
 */
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;
}
 
void screenbuffer_set_style(screenbuffer_t *scr, unsigned int fg_color, unsigned int bg_color)
{
    scr->style.fg_color = fg_color;
    scr->style.bg_color = bg_color;
}
 
 

Rev 1497	Rev 1525
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	/** Store one character to screenbuffer. Its position is determined by scr->position_x and scr->position_y.
34	*	34	* @param scr screenbuffer
-		35	* @param c stored character
35	*/	36	*/
36		-
37	int screenbuffer_putchar(screenbuffer_t *scr, char c)	37	void 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		-
46	return 1;	-
47	}	45	}
48		46
-		47	/** Initilize screenbuffer. Allocate space for screen content in accordance to given size.
-		48	* @param scr initialized screenbuffer
-		49	* @param size_x
-		50	* @param size_y
-		51	*/
49	screenbuffer_t screenbuffer_init(screenbuffer_t scr, int size_x, int size_y)	52	screenbuffer_t screenbuffer_init(screenbuffer_t scr, int size_x, int size_y)
50	{	53	{
51	if ((scr->buffer = (keyfield_t )malloc(sizeof(keyfield_t) size_x * size_y)) == NULL) {	54	if ((scr->buffer = (keyfield_t )malloc(sizeof(keyfield_t) size_x * size_y)) == NULL) {
52	return NULL;	55	return NULL;
53	}	56	}
54		57
55	scr->size_x = size_x;	58	scr->size_x = size_x;
56	scr->size_y = size_y;	59	scr->size_y = size_y;
57	scr->style.fg_color = DEFAULT_FOREGROUND_COLOR;	60	scr->style.fg_color = DEFAULT_FOREGROUND_COLOR;
58	scr->style.bg_color = DEFAULT_BACKGROUND_COLOR;	61	scr->style.bg_color = DEFAULT_BACKGROUND_COLOR;
59		62
60	screenbuffer_clear(scr);	63	screenbuffer_clear(scr);
61		64
62	return scr;	65	return scr;
63	}	66	}
64		67
65	void screenbuffer_clear(screenbuffer_t *scr)	68	void screenbuffer_clear(screenbuffer_t *scr)
66	{	69	{
67	unsigned int i;	70	unsigned int i;
68		71
69	for (i = 0; i < (scr->size_x * scr->size_y); i++) {	72	for (i = 0; i < (scr->size_x * scr->size_y); i++) {
70	scr->buffer[i].character = ' ';	73	scr->buffer[i].character = ' ';
71	scr->buffer[i].style = scr->style;	74	scr->buffer[i].style = scr->style;
72	}	75	}
73		76
74	scr->top_line = 0;	77	scr->top_line = 0;
75	scr->position_y = 0;	78	scr->position_y = 0;
76	scr->position_x = 0;	79	scr->position_x = 0;
77	}	80	}
78		81
79	/** Clear one buffer line	82	/** Clear one buffer line
80	* @param scr	83	* @param scr
81	* @param line One buffer line (not a screen line!)	84	* @param line One buffer line (not a screen line!)
82	*/	85	*/
83	void screenbuffer_clear_line(screenbuffer_t *scr, unsigned int line)	86	void screenbuffer_clear_line(screenbuffer_t *scr, unsigned int line)
84	{	87	{
85	unsigned int i;	88	unsigned int i;
86		89
87	for (i = 0; i < scr->size_x; i++) {	90	for (i = 0; i < scr->size_x; i++) {
88	scr->buffer[i + line*scr->size_x].character = ' ';	91	scr->buffer[i + line*scr->size_x].character = ' ';
89	scr->buffer[i + line*scr->size_x].style = scr->style;	92	scr->buffer[i + line*scr->size_x].style = scr->style;
90	}	93	}
91	}	94	}
92		95
93	void screenbuffer_copy_buffer(screenbuffer_t scr, keyfield_t dest)	96	void screenbuffer_copy_buffer(screenbuffer_t scr, keyfield_t dest)
94	{	97	{
95	unsigned int i;	98	unsigned int i;
96		99
97	for (i = 0; i < scr->size_x * scr->size_y; i++) {	100	for (i = 0; i < scr->size_x * scr->size_y; i++) {
98	dest[i] = scr->buffer[i];	101	dest[i] = scr->buffer[i];
99	}	102	}
100	}	103	}
101		104
102	void screenbuffer_goto(screenbuffer_t *scr, unsigned int x, unsigned int y)	105	void screenbuffer_goto(screenbuffer_t *scr, unsigned int x, unsigned int y)
103	{	106	{
104	scr->position_x = x % scr->size_x;	107	scr->position_x = x % scr->size_x;
105	scr->position_y = y % scr->size_y;	108	scr->position_y = y % scr->size_y;
-		109	}
-		110
-		111	void screenbuffer_set_style(screenbuffer_t *scr, unsigned int fg_color, unsigned int bg_color)
-		112	{
-		113	scr->style.fg_color = fg_color;
-		114	scr->style.bg_color = bg_color;
106	}	115	}
107		116
108		117

Subversion Repositories HelenOS-historic

(root)/uspace/trunk/console/screenbuffer.c – Rev 1497 → 1525