feat(tiny_ttf): ttf support (#3680)

Co-authored-by: embeddedt <42941056+embeddedt@users.noreply.github.com>
Co-authored-by: Gabor Kiss-Vamosi <kisvegabor@gmail.com>

examples/libs/tiny_ttf/index.rst

@@ -0,0 +1,6 @@
+Open a front with Tiny TTF
+"""""""""""""""""""""""""""""""""""""""""""""""
+
+.. lv_example:: libs/tiny_ttf/lv_example_tiny_ttf_1
+  :language: c
+

examples/libs/tiny_ttf/lv_example_tiny_ttf.h

@@ -0,0 +1,38 @@
+/**
+ * @file lv_example_tiny_ttf.h
+ *
+ */
+
+#ifndef LV_EXAMPLE_TINY_TTF_H
+#define LV_EXAMPLE_TINY_TTF_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*********************
+ *      INCLUDES
+ *********************/
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ * GLOBAL PROTOTYPES
+ **********************/
+void lv_example_tiny_ttf_1(void);
+
+/**********************
+ *      MACROS
+ **********************/
+
+#ifdef __cplusplus
+} /*extern "C"*/
+#endif
+
+#endif /*LV_EXAMPLE_TINY_TTF_H*/

examples/libs/tiny_ttf/lv_example_tiny_ttf_1.c

@@ -0,0 +1,24 @@
+#include "../../lv_examples.h"
+#if LV_USE_TINY_TTF && LV_BUILD_EXAMPLES
+
+#include "ubuntu_font.h"
+
+/**
+ * Load a font with Tiny_TTF
+ */
+void lv_example_tiny_ttf_1(void)
+{
+    /*Create style with the new font*/
+    static lv_style_t style;
+    lv_style_init(&style);
+    lv_font_t * font = lv_tiny_ttf_create_data(ubuntu_font, sizeof(ubuntu_font), 30);
+    lv_style_set_text_font(&style, font);
+    lv_style_set_text_align(&style, LV_TEXT_ALIGN_CENTER);
+
+    /*Create a label with the new style*/
+    lv_obj_t * label = lv_label_create(lv_scr_act());
+    lv_obj_add_style(label, &style, 0);
+    lv_label_set_text(label, "Hello world\nI'm a font created with Tiny TTF");
+    lv_obj_center(label);
+}
+#endif