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src/textbox.h

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+/**
+ * Copyright (c) 2022 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include "libs.h"
+#include "font.h"
+#include "util.h"
+#include "common_tiles.h"
+
+#define TEXTBOX_STATE_VISIBLE 1 << 0
+#define TEXTBOX_STATE_SCROLLED 1 << 1
+
+#define TEXTBOX_TILES_PER_ROW 20
+#define TEXTBOX_TILES_ROWS 2
+#define TEXTBOX_TILES_MAX TEXTBOX_TILES_PER_ROW * TEXTBOX_TILES_ROWS
+#define TEXTBOX_CHARACTER_FIRST 33
+#define TEXTBOX_TILE_BLANK COMMON_TILE_3
+
+#define TEXTBOX_TILES_DATA_POSITION 0x04
+
+#define TILE_FROM_CHAR(c) c-TEXTBOX_CHARACTER_FIRST+TEXTBOX_TILES_DATA_POSITION
+
+extern char *TEXTBOX_TEXT;
+extern uint8_t TEXTBOX_TEXT_LENGTH;
+extern uint8_t TEXTBOX_STATE;
+extern uint8_t TEXTBOX_SCROLL;
+
+void textboxInit();
+void textboxSetText(char *text, uint8_t length);
+void textboxUpdate();