1 files changed, 72 insertions, 0 deletions
diff --git a/kernel/include/drivers/screen.h b/kernel/include/drivers/screen.h
new file mode 100644
index 0000000..97f7e2a
--- /dev/null
+++ b/kernel/include/drivers/screen.h
@@ -0,0 +1,72 @@
+#pragma once
+
+#include "types.h"
+
+#ifdef __VGABUF___
+
+#define SCREEN_CHARACTER_WIDTH 9
+#define SCREEN_CHARACTER_HEIGHT 15
+
+typedef union color {
+    struct
+    {
+        uint8_t blue;
+        uint8_t green;
+        uint8_t red;
+        uint8_t alpha;
+    } channels;
+    uint32_t value;
+} packed color_t;
+
+void screen_init();
+
+size_t screen_get_width();
+
+size_t screen_get_height();
+
+size_t screen_get_character_width();
+
+size_t screen_get_character_height();
+
+void screen_draw_string(size_t x, size_t y, const char *s, size_t len,
+                        color_t color);
+
+void screen_fill(color_t color);
+
+void screen_fill_rect(size_t x, size_t y, size_t width, size_t height,
+                      color_t color);
+
+void screen_draw_rect(size_t x, size_t y, size_t width, size_t height,
+                      color_t color);
+
+void screen_copy_rect(size_t fromx, size_t fromy, size_t width, size_t height,
+                      size_t tox, size_t toy);
+
+void screen_flush();
+
+void screen_print_shutdown();
+
+#else
+
+#define VGA_WIDTH ((uint16_t)80)
+#define VGA_HEIGHT ((uint16_t)25)
+#define VGA_LINE_SIZE ((size_t)(VGA_WIDTH * sizeof(uint16_t)))
+#define VGA_AREA ((uint16_t)(VGA_WIDTH * VGA_HEIGHT))
+#define VGA_BUFFER_SIZE ((uint16_t)(VGA_WIDTH * VGA_HEIGHT))
+#define VGA_DEFAULT_ATTRIB 0xF
+
+void vga_init();
+
+void vga_write_char_at(size_t row, size_t col, uint16_t v);
+
+void vga_set_cursor(size_t row, size_t col);
+
+void vga_clear_screen();
+
+void screen_print_shutdown();
+
+void vga_enable_cursor();
+
+void vga_disable_cursor();
+
+#endif
+\ No newline at end of file