void
console_task(layer_t* layer, unsigned int memtotal)
{
#define INPUT_BEG_POS_X (16)
#define INPUT_BEG_POS_Y (28)
timer_t* timer;
task_t* task = task_now();
mem_mgr_t* memmgr = (mem_mgr_t*)MEMMGR_ADDR;
int data, fifobuf[128];
int* fat = (int*)mem_mgr_alloc_4k(memmgr, 4 * 2880);
char cmdline[32];
console_t console;
console.layer = layer;
console.cur_x = 8;
console.cur_y = INPUT_BEG_POS_Y;
console.cur_c = -1;
*((int*)0x0fec) = (int)&console;
fifo_init(&task->fifo, fifobuf, 128, task);
timer = timer_alloc();
timer_init(timer, &task->fifo, 1);
timer_settimer(timer, 50);
file_readfat(fat, (unsigned char*)(ADR_DISKIMG + 0x000200));
/* display the prompt of console window */
console_putchar(&console, '>', 1);
for ( ; ; ) {
io_cli();
if (0 == fifo_size(&task->fifo)) {
task_sleep(task);
io_sti();
}
else {
data = fifo_get(&task->fifo);
io_sti();
if (data <= 1) {
/* timer for cursor */
if (0 != data) {
timer_init(timer, &task->fifo, 0);
if (console.cur_c >= 0)
console.cur_c = COLOR8_FFFFFF;
}
else {
timer_init(timer, &task->fifo, 1);
if (console.cur_c >= 0)
console.cur_c = COLOR8_000000;
}
timer_settimer(timer, 50);
}
if (2 == data) /* cursor ON */
console.cur_c = COLOR8_FFFFFF;
if (3 == data) { /* cursor OFF */
fill_box8(layer->buf, layer->w_size,
COLOR8_000000, console.cur_x, console.cur_y,
console.cur_x + 7, console.cur_y + 15);
console.cur_c = -1;
}
if (256 <= data && data <= 511) {
/* keyboard data */
if ((8 + 256) == data) {
/* backspace */
if (console.cur_x > INPUT_BEG_POS_X) {
/* erase the cursor and move forward one character */
console_putchar(&console, ' ', 0);
console.cur_x -= 8;
}
}
else if ((10 + 256) == data) {
/* Enter Key */
/* erase cursor by space */
console_putchar(&console, ' ', 0);
cmdline[console.cur_x / 8 - 2] = 0;
console_newline(&console);
console_runcmd(&console, cmdline, fat, memtotal);
/* show the prompt */
console_putchar(&console, '>', 1);
}
else {
/* general character */
if (console.cur_x < 240) {
/* display one character and move backward one character */
cmdline[console.cur_x / 8 - 2] = data - 256;
console_putchar(&console, data - 256, 1);
}
}
}
/* show the cursor again */
if (console.cur_c >= 0) {
fill_box8(layer->buf, layer->w_size,
console.cur_c, console.cur_x, console.cur_y,
console.cur_x + 7, console.cur_y + 15);
}
layers_refresh(layer, console.cur_x, console.cur_y,
console.cur_x + 8, console.cur_y + 16);
}
}
}
//命令行窗口任务
void console_task(LAYER *layer, unsigned int mem_total)
{
TIMER *timer;
TASK *task = task_now();
int i, fifobuf[128];
MEMMANAGE *memmanage = (MEMMANAGE *)MEMMANAGE_ADDR;
int *fat = (int *)memmanage_alloc_4K(memmanage, 4 * 2880); //用来存储FAT表的内存地址
char cmdline[30]; //cmdline用来记录在命令行中输入的命令
CONSOLE console;
console.layer = layer;
console.cursor_x = 16;
console.cursor_y = 28;
console.cursor_color = -1;
*((int *) 0x0fec) = (int)&console;
file_readfat(fat, (unsigned char *)(ADR_DISKIMG + 0x000200)); //FAT表从第3个扇区开始，占用了共9个扇区
init_fifo(&task->fifo, 128, fifobuf, task);
timer = timer_alloc();
timer_init(timer, &task->fifo, 1);
timer_set(timer, 50);
//显示提示字符
displayStrings_atLayer(layer, 8, 28, COL8_FFFFFF, COL8_000000, ">");
for(;;)
{
io_cli();
if(0 == fifo_status(&task->fifo))
{
task_sleep(task);
io_sti();
}
else
{
//这里传出来的i直接就是键盘的对应键的字符加上一个键盘偏移量，不需要再转化了，只需要减去偏移量即可
i = fifo_get(&task->fifo);
io_sti();
//计时器的中断数据处理（在这里就是光标的闪烁）
if(1 == i || 0 == i) //等于1或者0
{
if(1 == i)
{
if(console.cursor_color >= 0)
{
console.cursor_color = COL8_FFFFFF;
}
timer_init(timer, &task->fifo, 0);
}
else
{
if(console.cursor_color >= 0)
{
console.cursor_color = COL8_000000;
}
timer_init(timer, &task->fifo, 1);
}
timer_set(timer, 50);
}
//光标ON
if(2 == i)
{
console.cursor_color = COL8_FFFFFF;
}
//光标OFF
if(3 == i)
{
drawRectangle(layer->buffer, layer->length, COL8_000000, console.cursor_x, console.cursor_y, 2, 15);
console.cursor_color = -1;
}
//键盘数据的处理(主要是命令的处理)
if(keyboard_offset <= i && i <= keyboard_offset + 255)
{
//如果是“退格键”的情况
if(8 + keyboard_offset == i)
{
//不能删除最前面的提示符，而且只能在有字符的时候才能删除
if(console.cursor_x > 16)
{
//首先用空格擦除光标，光标横坐标减8之后，再把要删除的那个字符用空格擦除
console_putchar(&console, ' ', 0);
console.cursor_x -= 8;
console_putchar(&console, ' ', 0);
}
}
//如果是“回车键”的情况
else if(10 + keyboard_offset == i)
{
console_putchar(&console, ' ', 0);
cmdline[console.cursor_x / 8 - 2] = 0;
console_newline(&console);
//运行命令
console_runcmd(cmdline, &console, fat, mem_total);
//显示提示字符
console_putchar(&console, '>', 1);
}
//如果是一般字符的情况
else
{
if(console.cursor_x < 240)
{
cmdline[console.cursor_x / 8 - 2] = i - keyboard_offset;
console_putchar(&console, i - keyboard_offset, 1);
}
}
}
//重新显示光标
if(console.cursor_color >= 0)
{
drawRectangle(layer->buffer, layer->length, console.cursor_color, console.cursor_x, console.cursor_y, 2, 15);
}
layer_part_refresh(layer, console.cursor_x, console.cursor_y, console.cursor_x + 8, console.cursor_y + 16);
}
}
}
