From 564cec6af8806f73b8cfeeb27d75e3b61831ede4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Franti=C5=A1ek=20Boh=C3=A1=C4=8Dek?=
 <fandabohacek@gmail.com>
Date: Sun, 20 Jun 2021 23:14:34 +0200
Subject: [PATCH] feat: use pheripherals in text viewer

---
 text-viewer/include/gui_component_text_view.h | 8 ++++++--
 text-viewer/src/gui_component_text_view.c     | 5 +++++
 text-viewer/src/main.c                        | 9 ++++++++-
 3 files changed, 19 insertions(+), 3 deletions(-)

diff --git a/text-viewer/include/gui_component_text_view.h b/text-viewer/include/gui_component_text_view.h
index ccc8774febca60217ce7b07ac2bdb45ea0a445b3..6f2ce5d71d218ca824392c897f6ebc06f29f57f2 100644
--- a/text-viewer/include/gui_component_text_view.h
+++ b/text-viewer/include/gui_component_text_view.h
@@ -17,9 +17,13 @@ typedef struct {
   display_pixel_t color;
 } multiline_text_t;
 
-multiline_text_t *gui_multiline_text_create(font_t *font, display_pixel_t color, char *text);
+multiline_text_t *gui_multiline_text_create(font_t *font, display_pixel_t color,
+                                            char *text);
 
-component_t gui_text_view_create(gui_t *gui, multiline_text_t *text, int16_t x, int16_t y);
+component_t gui_text_view_create(gui_t *gui, multiline_text_t *text, int16_t x,
+                                 int16_t y);
+
+uint16_t gui_text_view_get_lines_scrolled(component_t *component);
 
 void gui_text_view_scroll(component_t *text_view, int32_t x, int32_t y);
 void gui_text_view_reset_scroll(component_t *text_view);
diff --git a/text-viewer/src/gui_component_text_view.c b/text-viewer/src/gui_component_text_view.c
index 1bea9ee0519c23b62b537205db2d23f786e2615f..a66b9ce30522ac0148e6730ad72450fe6ae96987 100644
--- a/text-viewer/src/gui_component_text_view.c
+++ b/text-viewer/src/gui_component_text_view.c
@@ -81,6 +81,11 @@ void gui_text_view_full_scroll(component_t *text_view) {
   text_view->y = INT16_MIN; 
 }
 
+uint16_t gui_text_view_get_lines_scrolled(component_t *component) {
+  multiline_text_t *text = (multiline_text_t *)component->state;
+  return (-component->y) / (text->font->size + text->font->line_spacing);
+}
+
 void gui_text_view_render(container_t *container, component_t *component,
                           gui_t *gui) {
   multiline_text_t *text = (multiline_text_t*)component->state;
diff --git a/text-viewer/src/main.c b/text-viewer/src/main.c
index eb234095ddb05327b0dbfe248be8000b9554c6a1..c885936786f91d5655da1ed549d8853ef079c109 100644
--- a/text-viewer/src/main.c
+++ b/text-viewer/src/main.c
@@ -1,5 +1,6 @@
 #include "font.h"
 #include "mzapo_led_strip.h"
+#include "mzapo_rgb_led.h"
 #include "nonblocking_io.h"
 #include "serialize_lock.h"
 #include <stdio.h>
@@ -32,17 +33,22 @@ int main(int argc, char *argv[]) {
     }
   }
 
+  mzapo_rgb_led_t rgb_leds = mzapo_create_rgb_led();
+  rgb_led_clear(&rgb_leds, LED_LEFT);
+  rgb_led_clear(&rgb_leds, LED_RIGHT);
+
   if (argc < 2) {
     logger_info(&logger, __FILE__, __FUNCTION__, __LINE__, "Not enough arguments");
+    rgb_led_set_red(&rgb_leds, LED_LEFT);
   }
 
   display_t display = mzapo_create_display();
-  mzapo_rgb_led_t rgb_leds = mzapo_create_rgb_led();
   mzapo_ledstrip_t ledstrip = mzapo_create_ledstrip();
   void* knobs = mzapo_get_knobs_address();
 
   if (!mzapo_check_pheripherals(&ledstrip, &rgb_leds, &display, &knobs)) {
     logger_error(&logger, __FILE__, __FUNCTION__, __LINE__, "Could not initialize some of the pheripherals.");
+    rgb_led_set_red(&rgb_leds, LED_LEFT);
   }
 
   mzapo_pheripherals_t pheripherals = mzapo_pheripherals_create(&ledstrip, &rgb_leds, &display, &knobs);
@@ -58,6 +64,7 @@ int main(int argc, char *argv[]) {
   if (error != FILER_SUCCESS) {
     logger_error(&logger, __FILE__, __FUNCTION__, __LINE__, "Could not load file.");
     return 1;
+    rgb_led_set_red(&rgb_leds, LED_RIGHT);
   }
 
   file_set_nonblocking(STDIN_FILENO, &oldstdin);