From 0b7facea328516edd88152f5f267d18f65ea3d8f Mon Sep 17 00:00:00 2001
From: Baptiste Wicht <baptiste.wicht@gmail.com>
Date: Tue, 14 Jan 2014 21:30:21 +0100
Subject: [PATCH] Implement clear

---
 kernel/include/vesa.hpp     |  3 +++
 kernel/src/vesa.cpp         | 20 ++++++++++++++++++--
 kernel/src/vesa_console.cpp |  2 +-
 3 files changed, 22 insertions(+), 3 deletions(-)

diff --git a/kernel/include/vesa.hpp b/kernel/include/vesa.hpp
index 24643050..bdb6c0a0 100644
--- a/kernel/include/vesa.hpp
+++ b/kernel/include/vesa.hpp
@@ -114,6 +114,9 @@ void draw_hline(size_t x, size_t y, size_t w, uint32_t color);
 void draw_vline(size_t x, size_t y, size_t h, uint32_t color);
 void draw_vline(size_t x, size_t y, size_t h, uint8_t r, uint8_t g, uint8_t b);
 
+void draw_rect(size_t x, size_t y, size_t w, size_t h, uint32_t color);
+void draw_rect(size_t x, size_t y, size_t w, size_t h, uint8_t r, uint8_t g, uint8_t b);
+
 void draw_char(size_t x, size_t y, char c, uint32_t color);
 void draw_char(size_t x, size_t y, char c, uint8_t r, uint8_t g, uint8_t b);
 
diff --git a/kernel/src/vesa.cpp b/kernel/src/vesa.cpp
index 50dfce0a..84a8c3d3 100644
--- a/kernel/src/vesa.cpp
+++ b/kernel/src/vesa.cpp
@@ -108,7 +108,7 @@ void vesa::draw_vline(size_t x, size_t y, size_t h, uint32_t color){
 }
 
 void vesa::draw_vline(size_t x, size_t y, size_t h, uint8_t r, uint8_t g, uint8_t b){
-    return draw_vline(x, y, h, make_color(r, g, b));
+    draw_vline(x, y, h, make_color(r, g, b));
 }
 
 void vesa::draw_char(size_t x, size_t y, char c, uint32_t color){
@@ -130,5 +130,21 @@ void vesa::draw_char(size_t x, size_t y, char c, uint32_t color){
 }
 
 void vesa::draw_char(size_t x, size_t y, char c, uint8_t r, uint8_t g, uint8_t b){
-    return draw_char(x, y, c, make_color(r, g, b));
+    draw_char(x, y, c, make_color(r, g, b));
+}
+
+void vesa::draw_rect(size_t x, size_t y, size_t w, size_t h, uint32_t color){
+    auto where = x + y * y_shift;
+
+    for(size_t j = 0; j < h; ++j){
+        for(size_t i = 0; i < w; ++i){
+            screen[where + i] = color;
+        }
+
+        where += y_shift;
+    }
+}
+
+void vesa::draw_rect(size_t x, size_t y, size_t w, size_t h, uint8_t r, uint8_t g, uint8_t b){
+    draw_rect(x, y, w, h, make_color(r, g, b));
 }
diff --git a/kernel/src/vesa_console.cpp b/kernel/src/vesa_console.cpp
index a49cad43..f7b6010d 100644
--- a/kernel/src/vesa_console.cpp
+++ b/kernel/src/vesa_console.cpp
@@ -45,7 +45,7 @@ size_t vesa_console::columns(){
 }
 
 void vesa_console::clear(){
-
+    vesa::draw_rect(LEFT, TOP, _columns * 8, _lines* 16, 0, 0, 0);
 }
 
 void vesa_console::scroll_up(){