From c32988aa724ae8b2a84d34e09b44340859159283 Mon Sep 17 00:00:00 2001
From: antifallobst <antifallobst@systemausfall.org>
Date: Wed, 22 Feb 2023 23:42:44 +0100
Subject: [PATCH] feature (kernel): Implemented graphical log overlay

---
 kernel/inc/utils/logger.h |  3 ++-
 kernel/src/kmain.c        | 17 ++++++-----------
 kernel/src/utils/logger.c | 36 +++++++++++++++++++++++++++++++-----
 3 files changed, 39 insertions(+), 17 deletions(-)

diff --git a/kernel/inc/utils/logger.h b/kernel/inc/utils/logger.h
index 14725a4..d0c8701 100644
--- a/kernel/inc/utils/logger.h
+++ b/kernel/inc/utils/logger.h
@@ -31,6 +31,7 @@ typedef enum {
 } log_level_E;
 
 // logs a string to qemu's serial port
-void log(log_level_E log_level, string_t string, ...);
+void graphical_log_init ();
+void log                (log_level_E log_level, string_t string, ...);
 
 #endif //NOX_LOGGER_H
diff --git a/kernel/src/kmain.c b/kernel/src/kmain.c
index 727a159..88c8f09 100644
--- a/kernel/src/kmain.c
+++ b/kernel/src/kmain.c
@@ -58,6 +58,7 @@ void kernel_init(boot_info_T* boot_info) {
 
     limine_terminal_print(boot_info, "    Initializing graphics renderer...");
     graphics_renderer_init(boot_info);
+    graphical_log_init();
     limine_terminal_print(boot_info, " ok\n");
     limine_terminal_print(boot_info, "    Initializing scheduler...");
     scheduler_init();
@@ -74,17 +75,11 @@ void kmain(boot_info_T boot_info) {
     limine_terminal_print(&boot_info, "Kernel initialized\n");
     log(LOG_INFO, "!=====[ Kernel Initialized ]=====!\n");
 
-    graphics_buffer_T* buffer = graphics_buffer_request(0, 0, graphics_renderer_get_width() / 2, graphics_renderer_get_height(), GRAPHICS_BUFFER_OVERLAY);
-//    graphics_buffer_T* buffer2 = graphics_buffer_request(0, 0, 50, 50);
-
-//    for (int x = 0; x < 50; x++) {
-//        for (int y = 0; y < 50; y++) {
-//            graphics_buffer_set_pixel(buffer2, x, y, (color_argb_T){0x80, 0xca, 0xca, 0xca});
-//        }
-//    }
-
-    graphics_buffer_draw_string(buffer, 0, 0, (color_argb_T){0xFF, 0xFF, 0, 0}, "test string\n");
-    graphics_renderer_update();
+    log(LOG_NONE, "test none");
+    log(LOG_INFO, "test info");
+    log(LOG_DEBUG, "test debug");
+    log(LOG_WARNING, "test warning");
+    log(LOG_ERROR, "test error");
 
     CORE_HALT_FOREVER
 }
diff --git a/kernel/src/utils/logger.c b/kernel/src/utils/logger.c
index 8d3b7df..caaccfa 100644
--- a/kernel/src/utils/logger.c
+++ b/kernel/src/utils/logger.c
@@ -16,6 +16,7 @@
 #include "utils/logger.h"
 #include "utils/io.h"
 #include "utils/core.h"
+#include "drivers/graphics/renderer.h"
 
 string_t g_log_prefixes[LOG_ENUM_END] = {
         "", // LOG_NONE
@@ -25,14 +26,35 @@ string_t g_log_prefixes[LOG_ENUM_END] = {
         "[  Error  ] ",
 };
 
-bool g_logger_blocked = false;
+color_palette_E g_log_colors[LOG_ENUM_END] = {
+        COLOR_PAL_GREY_LIGHT,
+        COLOR_PAL_GREY_DARK,
+        COLOR_PAL_PINK,
+        COLOR_PAL_ORANGE,
+        COLOR_PAL_RED
+};
 
-void log_send_string_to_port(string_t str) {
+bool                g_logger_blocked         = false;
+graphics_buffer_T*  g_graphical_log_buffer   = NULL;
+position_T          g_graphical_log_position;
+
+void log_string(string_t str, log_level_E log_level) {
     char* c = (char*)str;
     while (*c != '\0') {
         io_out_byte(LOG_PORT, *c);
         c++;
     }
+
+    if (g_graphical_log_buffer != NULL) {
+        g_graphical_log_position = graphics_buffer_draw_string(g_graphical_log_buffer, g_graphical_log_position.x, g_graphical_log_position.y, g_color_palette[g_log_colors[log_level]], str);
+    }
+}
+
+void graphical_log_init() {
+    g_graphical_log_buffer   = graphics_buffer_request(0, 0, graphics_renderer_get_width() / 2, graphics_renderer_get_height(), GRAPHICS_BUFFER_OVERLAY);
+    g_graphical_log_position = (position_T){0, 0};
+
+    log(LOG_INFO, "<Logger> Started graphical log");
 }
 
 void log(log_level_E log_level, string_t str, ...) {
@@ -50,9 +72,13 @@ void log(log_level_E log_level, string_t str, ...) {
 
     va_end(args);
 
-    log_send_string_to_port(g_log_prefixes[log_level]);
-    log_send_string_to_port(formatted_string);
-    log_send_string_to_port("\n");
+    log_string(g_log_prefixes[log_level], log_level);
+    log_string(formatted_string, log_level);
+    log_string("\n", log_level);
+
+    if (g_graphical_log_buffer != NULL) {
+        graphics_renderer_update();
+    }
 
     g_logger_blocked = false;
 }
\ No newline at end of file