restructuring

F1:F103/LED_Screen/fonts.h

@@ -0,0 +1,56 @@
+/*
+ * This file is part of the LED_screen project.
+ * Copyright 2019 Edward V. Emelianov <eddy@sao.ru, edward.emelianoff@gmail.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+#ifndef FONTS_H__
+#define FONTS_H__
+
+#include <stdint.h>
+
+// code number of first symbol in font table
+#define FIRST_SYMBOL_CODE 32
+// total amount of symbols - all without first 32
+#define SYMBOLS_AMOUNT      (256-FIRST_SYMBOL_CODE)
+
+// type for font choosing
+typedef enum{
+    FONT_T_MIN = -1,    // no fonts <= this
+    FONT14,             // 16x16, font height near 14px
+    FONT16,             // 16x16, font height 16px
+    FONT_T_MAX          // no fonts >= this
+} font_t;
+
+int choose_font(font_t newfont);
+/* uint8_t fontheight();
+uint8_t fontbaseline();
+uint8_t fontbytes(); */
+const uint8_t *font_char(uint8_t Char);
+
+
+typedef struct{
+    const uint8_t *font;// font inself
+    uint8_t height;     // full font matrix height
+    uint8_t bytes;      // amount of bytes in font matrix
+    uint8_t baseline;   // baseline position (coordinate from bottom line)
+} afont;
+
+extern const afont *curfont;
+
+char *u2str(uint32_t val);
+
+#endif // FONTS_H__