实现字符输入

yourtion · Apr 26, 2016 · 7ab551c · 7ab551c
1 parent 9299bf0
commit 7ab551c
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Showing 2 changed files with 55 additions and 19 deletions.
diff --git a/17_day/bootpack.c b/17_day/bootpack.c
@@ -123,18 +123,29 @@ void HariMain(void)
 			if (256 <= i && i <= 511) { /* 键盘数据*/
 				sprintf(s, "%02X", i - 256);
 				putfonts8_asc_sht(sht_back, 0, 16, COL8_FFFFFF, COL8_008484, s, 2);
-				if (i < 0x54 + 256) {
-					if (keytable[i - 256] != 0 && cursor_x < 128) {
-						s[0] = keytable[i - 256];
-						s[1] = 0;
-						putfonts8_asc_sht(sht_win, cursor_x, 28, COL8_000000, COL8_FFFFFF, s, 1);
-						cursor_x += 8;
+				if (i < 0x54 + 256 && keytable[i - 256] != 0) { /*一般字符*/
+					if (key_to == 0) { /*发送给任务A */
+						if (cursor_x < 128) {
+							/*显示一个字符之后将光标后移一位*/
+							s[0] = keytable[i - 256];
+							s[1] = 0;
+							putfonts8_asc_sht(sht_win, cursor_x, 28, COL8_000000, COL8_FFFFFF, s, 1);
+							cursor_x += 8;
+						} 
+					} else { /*发送给命令行窗口*/
+						fifo32_put(&task_cons->fifo, keytable[i - 256] + 256);
 					}
 				}
 				if (i == 256 + 0x0e && cursor_x > 8) { /* 退格键 */
-					/* 用空格键把光标消去后，后移1次光标 */
-					putfonts8_asc_sht(sht_win, cursor_x, 28, COL8_000000, COL8_FFFFFF, " ", 1);
-					cursor_x -= 8;
+					if (key_to == 0) { /*发送给任务A */
+						if (cursor_x > 8) {
+							/*用空白擦除光标后将光标前移一位*/
+							putfonts8_asc_sht(sht_win, cursor_x, 28, COL8_000000, COL8_FFFFFF, " ", 1);
+							cursor_x -= 8;
+						}
+					} else { /*发送给命令行窗口*/
+						fifo32_put(&task_cons->fifo, 8 + 256);
+					}
 				}
 				if (i == 256 + 0x0f) { /* Tab键*/
 					if (key_to == 0) {
@@ -291,36 +302,60 @@ void make_textbox8(struct SHEET *sht, int x0, int y0, int sx, int sy, int c)
 
 void console_task(struct SHEET *sheet)
 {
-	struct FIFO32 fifo;
 	struct TIMER *timer;
 	struct TASK *task = task_now();
 
-	int i, fifobuf[128], cursor_x = 8, cursor_c = COL8_000000;
-	fifo32_init(&fifo, 128, fifobuf, task);
+	int i, fifobuf[128], cursor_x = 16, cursor_c = COL8_000000;
+	char s[2];
+
+	fifo32_init(&task->fifo, 128, fifobuf, task);
 	timer = timer_alloc();
-	timer_init(timer, &fifo, 1);
+	timer_init(timer, &task->fifo, 1);
 	timer_settime(timer, 50);
 
+	/*显示提示符*/
+	putfonts8_asc_sht(sheet, 8, 28, COL8_FFFFFF, COL8_000000, ">", 1);
+
 	for (;;) {
 		io_cli();
-		if (fifo32_status(&fifo) == 0) {
+		if (fifo32_status(&task->fifo) == 0) {
 			task_sleep(task);
 			io_sti();
 		} else {
-			i = fifo32_get(&fifo);
+			i = fifo32_get(&task->fifo);
 			io_sti();
 			if (i <= 1) { /*光标用定时器*/
 				if (i != 0) {
-					timer_init(timer, &fifo, 0); /*下次置0 */
+					timer_init(timer, &task->fifo, 0); /*下次置0 */
 					cursor_c = COL8_FFFFFF;
 				} else {
-					timer_init(timer, &fifo, 1); /*下次置1 */
+					timer_init(timer, &task->fifo, 1); /*下次置1 */
 					cursor_c = COL8_000000;
 				}
 				timer_settime(timer, 50);
-				boxfill8(sheet->buf, sheet->bxsize, cursor_c, cursor_x, 28, cursor_x + 7, 43);
-				sheet_refresh(sheet, cursor_x, 28, cursor_x + 8, 44);
 			}
+			if (256 <= i && i <= 511) { /*键盘数据（通过任务A） */
+				if (i == 8 + 256) {
+					/*退格键*/
+					if (cursor_x > 16) {
+						/*用空白擦除光标后将光标前移一位*/
+						putfonts8_asc_sht(sheet, cursor_x, 28, COL8_FFFFFF, COL8_000000, " ", 1);
+						cursor_x -= 8;
+					}
+				} else {
+					/*一般字符*/
+					if (cursor_x < 240) {
+						/*显示一个字符之后将光标后移一位 */
+						s[0] = i - 256;
+						s[1] = 0;
+						putfonts8_asc_sht(sheet, cursor_x, 28, COL8_FFFFFF, COL8_000000, s, 1);
+						cursor_x += 8;
+					}
+				}
+			}
+			/*重新显示光标*/
+			boxfill8(sheet->buf, sheet->bxsize, cursor_c, cursor_x, 28, cursor_x + 7, 43);
+			sheet_refresh(sheet, cursor_x, 28, cursor_x + 8, 44);
 		}
 	}
 }
diff --git a/17_day/bootpack.h b/17_day/bootpack.h
@@ -199,6 +199,7 @@ struct TSS32 {
 struct TASK {
 	int sel, flags;		/* sel用来存放GDT的编号*/
 	int level, priority; /* 优先级 */
+	struct FIFO32 fifo;
 	struct TSS32 tss;
 };
 struct TASKLEVEL {