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    width in characters    
 * @param size_y    height in characters
 * @return pointer to screenbuffer (same as scr parameter) or NULL
 */
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;
    scr->style.bg_color = DEFAULT_BACKGROUND;
    scr->is_cursor_visible = 1;
   
    screenbuffer_clear(scr);
   
    return scr;
}
 
/** Clear screenbuffer.
 * @param scr screenbuffer
 */
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;
    }
}
 
/** Copy content buffer from screenbuffer to given memory.
 * @param scr   source screenbuffer
 * @param dest  destination
 */
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];
    }
}
 
/** Set new cursor position in screenbuffer.
 * @param scr
 * @param x
 * @param y
 */
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;
}
 
/** Set new style.
 * @param scr
 * @param fg_color
 * @param bg_color
 */
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 1553	Rev 1575
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	/** Store one character to screenbuffer. Its position is determined by scr->position_x and scr->position_y.	33	/** Store one character to screenbuffer. Its position is determined by scr->position_x and scr->position_y.
34	* @param scr screenbuffer	34	* @param scr screenbuffer
35	* @param c stored character	35	* @param c stored character
36	*/	36	*/
37	void 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	}	45	}
46		46
47	/** Initilize screenbuffer. Allocate space for screen content in accordance to given size.	47	/** Initilize screenbuffer. Allocate space for screen content in accordance to given size.
48	* @param scr initialized screenbuffer	48	* @param scr initialized screenbuffer
49	* @param size_x width in characters	49	* @param size_x width in characters
50	* @param size_y height in characters	50	* @param size_y height in characters
51	* @return pointer to screenbuffer (same as scr parameter) or NULL	51	* @return pointer to screenbuffer (same as scr parameter) or NULL
52	*/	52	*/
53	screenbuffer_t screenbuffer_init(screenbuffer_t scr, int size_x, int size_y)	53	screenbuffer_t screenbuffer_init(screenbuffer_t scr, int size_x, int size_y)
54	{	54	{
55	if ((scr->buffer = (keyfield_t )malloc(sizeof(keyfield_t) size_x * size_y)) == NULL) {	55	if ((scr->buffer = (keyfield_t )malloc(sizeof(keyfield_t) size_x * size_y)) == NULL) {
56	return NULL;	56	return NULL;
57	}	57	}
58		58
59	scr->size_x = size_x;	59	scr->size_x = size_x;
60	scr->size_y = size_y;	60	scr->size_y = size_y;
61	scr->style.fg_color = DEFAULT_FOREGROUND;	61	scr->style.fg_color = DEFAULT_FOREGROUND;
62	scr->style.bg_color = DEFAULT_BACKGROUND;	62	scr->style.bg_color = DEFAULT_BACKGROUND;
-		63	scr->is_cursor_visible = 1;
63		64
64	screenbuffer_clear(scr);	65	screenbuffer_clear(scr);
65		66
66	return scr;	67	return scr;
67	}	68	}
68		69
69	/** Clear screenbuffer.	70	/** Clear screenbuffer.
70	* @param scr screenbuffer	71	* @param scr screenbuffer
71	*/	72	*/
72	void screenbuffer_clear(screenbuffer_t *scr)	73	void screenbuffer_clear(screenbuffer_t *scr)
73	{	74	{
74	unsigned int i;	75	unsigned int i;
75		76
76	for (i = 0; i < (scr->size_x * scr->size_y); i++) {	77	for (i = 0; i < (scr->size_x * scr->size_y); i++) {
77	scr->buffer[i].character = ' ';	78	scr->buffer[i].character = ' ';
78	scr->buffer[i].style = scr->style;	79	scr->buffer[i].style = scr->style;
79	}	80	}
80		81
81	scr->top_line = 0;	82	scr->top_line = 0;
82	scr->position_y = 0;	83	scr->position_y = 0;
83	scr->position_x = 0;	84	scr->position_x = 0;
84	}	85	}
85		86
86	/** Clear one buffer line.	87	/** Clear one buffer line.
87	* @param scr	88	* @param scr
88	* @param line One buffer line (not a screen line!)	89	* @param line One buffer line (not a screen line!)
89	*/	90	*/
90	void screenbuffer_clear_line(screenbuffer_t *scr, unsigned int line)	91	void screenbuffer_clear_line(screenbuffer_t *scr, unsigned int line)
91	{	92	{
92	unsigned int i;	93	unsigned int i;
93		94
94	for (i = 0; i < scr->size_x; i++) {	95	for (i = 0; i < scr->size_x; i++) {
95	scr->buffer[i + line*scr->size_x].character = ' ';	96	scr->buffer[i + line*scr->size_x].character = ' ';
96	scr->buffer[i + line*scr->size_x].style = scr->style;	97	scr->buffer[i + line*scr->size_x].style = scr->style;
97	}	98	}
98	}	99	}
99		100
100	/** Copy content buffer from screenbuffer to given memory.	101	/** Copy content buffer from screenbuffer to given memory.
101	* @param scr source screenbuffer	102	* @param scr source screenbuffer
102	* @param dest destination	103	* @param dest destination
103	*/	104	*/
104	void screenbuffer_copy_buffer(screenbuffer_t scr, keyfield_t dest)	105	void screenbuffer_copy_buffer(screenbuffer_t scr, keyfield_t dest)
105	{	106	{
106	unsigned int i;	107	unsigned int i;
107		108
108	for (i = 0; i < scr->size_x * scr->size_y; i++) {	109	for (i = 0; i < scr->size_x * scr->size_y; i++) {
109	dest[i] = scr->buffer[i];	110	dest[i] = scr->buffer[i];
110	}	111	}
111	}	112	}
112		113
113	/** Set new cursor position in screenbuffer.	114	/** Set new cursor position in screenbuffer.
114	* @param scr	115	* @param scr
115	* @param x	116	* @param x
116	* @param y	117	* @param y
117	*/	118	*/
118	void screenbuffer_goto(screenbuffer_t *scr, unsigned int x, unsigned int y)	119	void screenbuffer_goto(screenbuffer_t *scr, unsigned int x, unsigned int y)
119	{	120	{
120	scr->position_x = x % scr->size_x;	121	scr->position_x = x % scr->size_x;
121	scr->position_y = y % scr->size_y;	122	scr->position_y = y % scr->size_y;
122	}	123	}
123		124
124	/** Set new style.	125	/** Set new style.
125	* @param scr	126	* @param scr
126	* @param fg_color	127	* @param fg_color
127	* @param bg_color	128	* @param bg_color
128	*/	129	*/
129	void screenbuffer_set_style(screenbuffer_t *scr, unsigned int fg_color, unsigned int bg_color)	130	void screenbuffer_set_style(screenbuffer_t *scr, unsigned int fg_color, unsigned int bg_color)
130	{	131	{
131	scr->style.fg_color = fg_color;	132	scr->style.fg_color = fg_color;
132	scr->style.bg_color = bg_color;	133	scr->style.bg_color = bg_color;
133	}	134	}
134		135
135		136

Subversion Repositories HelenOS-historic

(root)/uspace/trunk/console/screenbuffer.c – Rev 1553 → 1575