/*
* 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.
*/
/** @addtogroup console
* @{
*/
/** @file
*/
#include <screenbuffer.h>
#include <console/style.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, wchar_t ch)
{
keyfield_t *field =
get_field_at(scr, scr->position_x, scr->position_y);
field->character = ch;
field->attrs = scr->attrs;
}
/** 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)
{
scr
->buffer
= (keyfield_t
*) malloc(sizeof(keyfield_t
) * size_x
* size_y
); if (!scr->buffer)
return NULL;
scr->size_x = size_x;
scr->size_y = size_y;
scr->attrs.t = at_style;
scr->attrs.a.s.style = STYLE_NORMAL;
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].attrs = scr->attrs;
}
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].attrs = scr->attrs;
}
}
/** 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, int style)
{
scr->attrs.t = at_style;
scr->attrs.a.s.style = style;
}
/** Set new color.
*
* @param scr
* @param fg_color
* @param bg_color
*
*/
void screenbuffer_set_color(screenbuffer_t *scr, unsigned int fg_color, unsigned int bg_color, unsigned int flags)
{
scr->attrs.t = at_idx;
scr->attrs.a.i.fg_color = fg_color;
scr->attrs.a.i.bg_color = bg_color;
scr->attrs.a.i.flags = flags;
}
/** Set new RGB color.
*
* @param scr
* @param fg_color
* @param bg_color
*
*/
void screenbuffer_set_rgb_color(screenbuffer_t *scr, unsigned int fg_color, unsigned int bg_color)
{
scr->attrs.t = at_rgb;
scr->attrs.a.r.fg_color = fg_color;
scr->attrs.a.r.bg_color = bg_color;
}
/** @}
*/