void fb_hResetCharCells(FB_GFXCTX *context, int do_alloc)
{
int i;
if( __fb_gfx!=NULL ) {
/* Free the previously allocated character cells */
if( __fb_gfx->con_pages!=NULL ) {
for (i = 0; i < __fb_gfx->num_pages; i++) {
free(__fb_gfx->con_pages[i]);
}
free(__fb_gfx->con_pages);
}
if( do_alloc ) {
size_t text_size = __fb_gfx->text_w * __fb_gfx->text_h;
/* Allocate memory for all character cells */
__fb_gfx->con_pages = (GFX_CHAR_CELL **)malloc(sizeof(GFX_CHAR_CELL *) * __fb_gfx->num_pages);
for (i = 0; i < __fb_gfx->num_pages; i++) {
__fb_gfx->con_pages[i] =
(GFX_CHAR_CELL *)calloc(1, sizeof(GFX_CHAR_CELL) * text_size);
}
/* Reset all character cells with default values */
fb_hClearCharCells( 0, 0,
__fb_gfx->text_w, __fb_gfx->text_h,
context->work_page,
32,
context->fg_color, context->bg_color );
} else {
__fb_gfx->con_pages = NULL;
}
}
}
static void fb_hHookConScroll
(
fb_ConHooks *handle,
int x1, int y1,
int x2, int y2,
int rows
)
{
int w = x2 - x1 + 1;
int h = y2 - y1 + 1;
int clear_start, clear_end;
fb_PrintInfo *pInfo = (fb_PrintInfo*) handle->Opaque;
int font_w = __fb_gfx->font->w;
int font_h = __fb_gfx->font->h;
fb_hHookConScrollGfx( pInfo->context, x1 * font_w, y1 * font_h,
(x2 + 1) * font_w, (y2 + 1) * font_h,
rows * font_h,
&pInfo->dirty_start, &pInfo->dirty_end );
/* Don't foget to update the character cells */
clear_end = y2 + 1;
if( rows >= h ) {
clear_start = y1;
} else {
int y_src = y1 + rows;
int y_dst = y1;
size_t con_width = __fb_gfx->text_w;
GFX_CHAR_CELL *src = __fb_gfx->con_pages[ pInfo->context->work_page ] + y_src * con_width;
GFX_CHAR_CELL *dst = __fb_gfx->con_pages[ pInfo->context->work_page ] + y_dst * con_width;
size_t cell_line_width = w * sizeof( GFX_CHAR_CELL );
h -= rows;
clear_start = y1 + h;
while( h-- ) {
memcpy( dst, src, cell_line_width );
dst += con_width;
src += con_width;
}
}
fb_hClearCharCells( x1, clear_start, x2+1, clear_end,
pInfo->context->work_page, 32,
pInfo->context->fg_color, pInfo->context->bg_color );
handle->Coord.Y = handle->Border.Bottom;
}